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The resilience-based systemic safety analysis paradigm offers a scientific and practical approach to managing the operational safety of modern highway tunnels. To gain a deeper understanding of resilience, the authors review advancements in resilience research across various engineering disciplines globally and distill two key insights: (1) resilience is a comprehensive capability that emphasizes performance throughout the entire process, and (2) it comprises distinct attributes, namely robustness, redundancy, resource adequacy, and rapid response. Recognizing the limitations of traditional risk analysis methods in the context of highway tunnel operations, the study underscores the necessity and value of incorporating resilience into safety management frameworks. Operational resilience in highway tunnels is defined as "the ability to prevent, resist, adapt to, and recover from actual or potential disruptions that may hinder the normal operation and traffic flow of highway tunnels". Furthermore, the concepts of full-stage performance, dynamic evolution, and objective quantification are analyzed, leading to the development of a preliminary conceptual framework. To enhance tunnel operational resilience, a strategy is proposed based on four functions: perception, response, learning, and prediction, along with preliminary measures to enhance resilience. In particular, in addressing fire risk, intelligent technologies and systems are highlighted, including advanced fire detection, fire prediction tools, and flexible entry blocking mechanisms for tunnels. Future research on highway tunnel operational resilience is expected to deepen, providing practical guidance and promoting the scientific and systematic development of tunnel safety management. The ultimate goal is to create a safer, more efficient, and sustainable tunnel operation system through the establishment of a comprehensive theoretical framework. [ABSTRACT FROM AUTHOR]

In order to effectively solve the double water hazard problem of the roof and floor aquifer in the coalfield of the north of the Yellow River, we takes the treatment of water disaster in Shandong Energy Qiuji Coal Mine as an example, which based on the analysis of mine hydrogeology and water disaster characteristics, determines the concept of water control in advance, regional coordination, grouting where water leakage occurs and safety promotion. We put forward the technology of limestone water disaster control with “roof and floor injection and curtain grouting”. The “plum blossom” and “upper and lower strata penetration” drilling methods are used to effectively explore karst fissures and concealed water channel in aquifers, and through the real-time observation technology of equidistant directional drilling and hydrogeology borehole to ensure the precise grouting. By the end of 2018, 19 main holes and 95 branch holes were constructed in the grouting project, which accumulated 64 183.74 meters, 329 035 tons of cement and 24 845 tons of coal ash. The results showed that the water pressure of limestone decreased obviously after grouting and gushing water volume was less than 10 cubic meters per hour, which achieved the safety exposing and pilot production in coalface. It is pointed out that the key technology of directional grouting in the north of the Yellow River coalfield can effectively seal karst fissure and concealed water channel in aquifers and achieve high quality precision grouting for karst fissure and water channel of aquifers. This technology provides safety guarantee for the two hundred million tons of coal of the lower coal group, and also provides reference for the prevention and control of similar water disasters in the north of the Yellow River coalfield of China.resources

Aiming at the requirements of pneumatic soft manipulators working in remote unstructured environments, a teleoperation system of pneumatic soft manipulators was built. Based on the principle of "fast pneumatic network" and modular disassembly, a flexible bending actuator was designed and manufactured. A hand-like flexible manipulator was assembled according to the experimental requirements. The mechanics model of the soft actuator was established based on Yeoh model, and was revised by simulation analysis, which provided a theoretical basis for the control of the soft actuator. The architecture of the teleoperation system was designed, the driving mode and control strategy of the pneumatic soft manipulators were put forward. The client software interface was created in the C# windows application. Based on skinning technology, the soft actuator was modeled in 3D Max software, and a virtual working scene was built in Unity3D. The motion control of the soft manipulators and the collision and picking of the target objects were realized by remote feedback information through script programming. Experiments for finding the relationship between the bending angle of the soft actuator and pressure were carried out to verify the accuracy of the analytics mechanics model. And the teleoperation gesture mapping experiments were carried out to analyze the feasibility of the teleoperation systems, and the further research and applications were discussed. [ABSTRACT FROM AUTHOR]

To explore a quantitative analysis method to express the tempo-spatial effect of the excavation disturbed rock zone, a displacement-radius correlation quantitative analysis model of the rock mass deteriorated parameters was developed, with the introduction of displacement and spatial correlation into the existing quantitative analysis models. The physical interpretations and the value ranges of the undetermined parameters were clarified. The results of the model showed high accordance with the measured data and reflected the deterioration parameter variation in the direction by depth, which suggested good applicability in engineering. [ABSTRACT FROM AUTHOR]