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A near-real-time recognition model was constructed to rapidly and timely identify the rice growth stages using sequential spectral images. The key stages of rice growth were identified, including tillering, jointing, heading, milking, and maturity. An optimal combination of features was also obtained. The rice experimental field was carried out in the Tianhe District, Guangzhou City, Guangdong Province, China. Unmanned aerial vehicles (UAVs) were involved in capturing spectral images of the field. The drone imaging system was equipped with one visible light and five multispectral cameras, each of which had a 2-million-pixel resolution for the high-definition captures. Detailed spectral data was obtained to precisely identify the different rice growth stages. A significant challenge was the variation in the RGB values under different lighting conditions. The reason was that the accurate segmentation of the rice canopy was hindered by using color as the primary feature. A novel spectral image segmentation was introduced to combine the Relative Vegetation Index using an iterative self-organizing data analysis. The complete area of the rice canopy was precisely extracted for the accurate identification of the growth stage. Then, the dataset was simplified to reduce the dimensions and computational complexity, in order to enhance the performance and efficiency of recognition. Among them, the expression of features was analyzed during different rice growth stages, where the reflectance data was from green, red, blue, red-edge, and near-infrared bands. Eight vegetation indices were considered as the candidate features, including the Normalized Difference Red Edge Index (NDRE), Visual Atmospherically Resistant Index (VARI), and Red Edge Chlorophyll Index (RECI). Minimum Redundancy Feature Selection was used to efficiently rank and select the most relevant and least redundant features, in order to avoid computational overload and potential impact on the model. The optimal combination of features was identified as the NDRE, VARI, and RECI, thus forming the crux of the feature engineering. Finally, this combination was integrated into the Extreme Gradient Boosting to construct an advanced recognition model of the rice growth stage. The improved model with the Extreme Gradient Boosting also exhibited exceptional performance with minimal confusion among the five growth stages. The accuracy rates of the model were 98.08%, 100.00%, 99.68%, 97.50%, and 99.29%, respectively, for the tillering, jointing, heading, milking, and maturity stages of rice. An overall recognition accuracy of 98.77% was achieved. Additionally, the improved model scored a Kappa coefficient of 0.984 and a macro-F1 score of 0.9891. The XGBoost improved the overall recognition accuracy, Kappa coefficient, and F1 score by 1.59 percentage points, 0.020, and 0.015, respectively, compared with the SVM. While the improvements were 1.23 percentage points, 0.015, and 0.011, respectively, compared with RF. The finding can provide a reliable, near-real-time, and highly accurate identification of rice growth stages. This improved model can also offer essential support for decision-making in agricultural practices, particularly in crop production and field management for the high crop yield in precision agriculture. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Southeast University / Dongnan Daxue Xuebao is the property of Journal of Southeast University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Southeast University / Dongnan Daxue Xuebao is the property of Journal of Southeast University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electronic Communication & Computer Science is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Graph anomaly detection is an important content in network research. In order to solve the problem that the previous work often relies on a single self-supervised signal and cannot detect multiple types of anomalies well, the integrating structure and attribute self-supervised graph anomaly detection model was proposed. Firstly, the target node was selected, and then the corresponding negative node was sampled based on the adjacency matrix of graphlet. Secondly, the positive and negative substructures were constructed, and the substructure representation was learned based on graph convolutional network to construct the structure self-supervised signal. Thirdly, the attribute self-supervised was reconstructed by autoencoder to obtain the attribute self-supervised signal, to solve the attribute smoothing problem caused by node anonymity. Finally, the difference was learned by contractive learning between positive and negative pairs before and after reconstruction to realize anomaly detection. Three sets of experiments are carried out on four data sets, and the results show that the model can detect abnormal nodes in the graph effectively. [ABSTRACT FROM AUTHOR]

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to explore the effects of fertilization on the phenological period of the mother tree of Larch seed garden, this study selected the mother tree of Larch seed garden of 1. 5 generation and 2 generation as the research object. Different proportions and doses of nitrogen, phosphorus and potassium fertilizer were used as experimental treatments to observe and analyze the phenological phases of the mother tree, such as bud expansion, bud spreading, bud capping, male flower bud emergence and male flower flowering. The results showed that fertilization had little effect on bud growth, and the bud growth of main branches was mainly concentrated between April 18 and April 20. Fertilization had a certain effect on bud development, among which, the beginning of main bud development was mainly concentrated from April 26 to April 30, and the complete leaf development of main bud was mainly concentrated from May 20 to May 24. Fertilization treatment had a certain effect on bud capping. The beginning of bud capping of main branch mainly began from August 17 to 27. The complete capping of main shoots mainly occurred from August 26 to September 9. Fertilization also had a certain impact on the growth period. The growth period of different fertilization treatments varied from 131d to 143 d. The onset of flowering of male flowers was mainly concentrated from April 13 to April 18, with a difference of 5d between treatments. The peak flowering period of male flowers was mainly concentrated from April 16 to April 22, with a difference of 6d among different treatments. The final flowering period of male flowers was mainly concentrated from April 19 to April 26, with a difference of 7 d among different treatments. Fertilization had a certain effect on the flowering period, which varied from 6d to 8d among different treatments. Range analysis showed that no matter the growth phenology or flowering phenology, the effects of different kinds of fertilizers were N fertilizer, P fertilizer and K fertilizer in the order from large to small. The application of medium amount of N fertilizer and P fertilizer, and high amount of K fertilizer was beneficial to the growth and flowering of the mother tree of larch seed orchard. The results provided theoretical support and technical reference for the rational fertilization of larch seed orchard and the improvement of seed yield and quality of larch mother tree. [ABSTRACT FROM AUTHOR]

Copyright of Applied Chemical Industry is the property of Shaanxi Research Design Insitute of Petroleum & Chemical Industry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Forest Engineering is the property of Forest Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tianjin Medical Journal is the property of Tianjin Medical Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Southeast University / Dongnan Daxue Xuebao is the property of Journal of Southeast University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Guangdong Architecture Civil Engineering is the property of Guangdong Architecture Civil Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Southern Agriculture is the property of Journal of Southern Agriculture and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the case that promotional local advertising of retailers undermine customer loyalty and reduce brand image. In order to analyze prerequisites that manufacturers carried out collaborative advertising in a cost-sharing form, and impacts of cooperative advertising on consumer demand and supply chain profits.Two competitive supply chains which were consist of single manufacturer and single retailer as the object of this paper. The Nash game model between supply chains and the Stackelberg game model with retailers as leaders were built. Cooperative advertising and non-cooperative advertising games in two sales cycles were compared and analyzed by considering long-term effects of advertising. The results show that prerequisites for manufacturers to cooperate advertising are obviously negative effect of advertising and high commodity substitution rate. When the commodity substitution is not obvious, cooperative advertising can effectively increase demand, on the contrary, the demand is reduced. Cooperative advertising does not improve retailer revenue. However, the incomes of manufacturers and total profits of supply chain are improved when the commodity substitution rate is low. The findings have a certain guiding significance to decision making of supply chain member on the local advertising practice. [ABSTRACT FROM AUTHOR]

There are some problems such as separation of process and management, overlook of global relations and laboratory resources, in laboratory construction project management using process management methods. This paper puts forward the process network consisting of business process and management process in first. Then a decision-making method of management process aided by quality standards and collaborative experiment data is introduced. After discussing the five objectives of university laboratory construction project process management, the paper focuses on the steps of application project by process network. At last, the practice of application project based on Java open source techniques shows that execution effect and efficiency of the laboratory construction project management can be improved. [ABSTRACT FROM AUTHOR]

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Southern Agriculture is the property of Journal of Southern Agriculture and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Cholelithiasis has a high incidence rate, and at present, cholecystectomy has become the standard method for the treatment of gallstones. Traditional Chinese medicine treatment has a long history in the treatment of ehololithiasis and has accumulated rich experience. This article summarizes the clinical effect of integrated traditional Chinese and Western medicine therapy in treating cholecystitis. controlling biliary tract infection, regulating bile metabolism, and preventing stenosis and recurrence of calculus after bile duct surgery', in order to provide experience for the development of individualized and accurate treatment regimens for patients with gallstones. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the theory of symmetry and its matrix representation, a unified method is proposed for evaluating the movability of symmetric pin-jointed assemblies. Using the irreducible representations from associated matrices and the Great Orthogonality Theorem, symmetry-adapted coordinate system is built to describe the symmetry of a structure, and to transform the original equilibrium matrix into a series of independent matrices in a block-diagonalized form. Then the symmetries of mechanism modes and self-stress states through the null space and left null space of the sub-blocks and the symmetry associated with each sub-block can be obtained. Subsequently, the comparison between the symmetry order of mechanism modes and self-stress states can reveal the movability of a symmetric structure. Some classical examples which satisfy the well-known 'Maxwell rule' are discussed, including free-standing pin-jointed assemblies, a type of symmetric ring structures, and diagonal square pyramid space grids. Numerical results show that the proposed method is reasonable and convenient, as the method solves the shortage of the existing symmetry method proposed by Guest, such as missing a solution, and the misjudgment. The results are in good accordance with the corresponding ones of some published articles. Moreover, all the illustrative structures have fully symmetric internal mechanisms, and thus are verified to be transformable. [ABSTRACT FROM AUTHOR]

Objective To investigate the effect of G-protein-coupled bile acid receptor 1 (TGR5) receptor activation on high glucose-induced cardiomyocyte hypertrophy in mice. M ethods After primary culture of mouse cardiomyocytes, the cells were divided into the control group, high glucose group, high glucose + INT-777 (the agonist of TGR5 receptor) and high glucose + INT-777 + TGR5 shRNA group. Image analysis system was used for determination of cell surface area, RTPCR and Western blotting were used to detect the lentivirus efficiency of TGR5 interference, and the expression of pro-hypertrophy genes was detected by RT-PCR. Results The mouse cardiomyocytes were successfully cultured. Compared with the control group, cardiomyocytes' surface area and pro-hypertrophy gene mRNA expression increased in the high glucose group (all P < 0.05). TGR5 activation inhibited the increase of cardiomyocytes' surface area and pro-hypertrophy gene mRNA expression which was induced by high glucose (all P < 0.05). Compared with high glucose + INT-777 group, cardiomyocytes' surface area and pro-hypertrophy gene mRNA expression increased significantly after TGR5 gene interference (all P < 0.05). Conclusion TGR5 receptor activation can inhibit cardiomyocyte hypertrophy and pro-hypertrophy gene mRNA expression induced by high glucose, which may be an important drug target for diabetic cardiomyopathy. [ABSTRACT FROM AUTHOR]

环腺苷酸结合蛋白 (Epac) 是近来发现的一种新型 cAMP 下游靶因子，是小 GTP 酶 Ras 家族 Rap1 和 Rap2 的鸟嘌呤核苷酸交换因子。 Epac 对心肌兴奋－收缩偶联、心肌肥厚、心肌细胞凋亡等均发挥重要调控作用，有望作为治疗心脏疾病的一个新靶点。 [ABSTRACT FROM AUTHOR]

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

On the basis of the mechanical behavior of string structures, which can be simulated using elastic continuous beam subjected to concentrated force at two ends, the maximum value of the inner forces of the upper chord elements was obtained. Then the sufficient condition of preventing the occurrence of local damage of upper chord and strut damage in succession was proposed. The truss string structures and beam string structures were taken as examples to investigate the influence of the loss of stmts on the progressive collapse resistance performance. The results show that the change of cable stresses is slight. But the increase of inner forces of the adjacent strut is larger than 50%. This is because the adjacent strut will undertake more external loads. Moreover, the dynamic effects lead to the increase of inner forces of adjacent stmts significantly. Furthermore, the structure with lower stiffness of upper chord will have a greater dependence with the strut. The influence of the loss of strut is also more apparent due to the dynamic effects. [ABSTRACT FROM AUTHOR]

When the 2011 ZXCC01 well was in normal drilling to Ordovician limestone, an eruption occurred, and also an eruption occurred in its adjacent 12 m 2011 ZXCC01(W1) well when it was drilled to K2 limestone. In order to analyze the causes of blowout, the research was carried out from three aspects including the water flow channel, the wellspring water supply, and the power source of the blowout. Based on seismic data, 3D seismic fine interpretation technique was used to analyze the possible water diversion channels. The apparent resistivity neural network inversion technique was used to study the water-rich water in the blowout zone and analyzed the main source of water spraying. The geological analysis method and the inversion technique were used to study the crustal stress and the coal seam gas pressure in the blowout area and analyzed the main power source of the blowout. The limestone of K2 limestone and ordovician Fengfeng formation in the blowout zone are water-rich. The blowout zone is located on the bisection line of the anticlinal axis of Xiaoxiwa depression and the "mountain figure"structure. The ground stress and gas pressure are alsolarge with the power source needed for blowout. In addition, there is a collapse column in the blowout zone. The 2011 ZXCC01 and 2011 ZXCC01(W1) well are within the collapse column. Due to the influence of collapse columns, K2 limestone has a close hydraulic relationship with the limestone of ordovician Fengfeng formation. This eventually led to a blowout in well 2011 ZXCC01 and 2011 ZXCC01(W1) well. [ABSTRACT FROM AUTHOR]