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Factors that affect the stability of roads around rocks

Authors :
Wang Wen
Shiwei Zhang
Tongqiang Xiao
Yuxi Hao
Dongyin Li
Huamin Li
Source :
Geomatics, Natural Hazards & Risk, Vol 12, Iss 1, Pp 829-851 (2021)
Publication Year :
2021
Publisher :
Taylor & Francis Group, 2021.

Abstract

The control method of deformation of large sections of soft rock formations in coal mines is a major problem in mining practice. Taking Wangzhuang Coal Mine in Shanxi Province, China, for example, the support method of large sections of soft rock formations was studied to control the deformation of the top and bottom plates and two gangs, and to obtain the damage of the surrounding rocks at different depths through drilling imaging. In addition, the displacement, plastic area and stress field distribution patterns of surrounding rocks are obtained by simulating in FLAC3D. Coupling support for broken, plastic and elastic zones is achieved using bolts, grout anchors, and long anchor cables. The bottom of the road is effectively controlled by floor grout and concrete reverse arches. The results show that under the combination of anchorage and grout, the fault depth and degree of the surrounding rocks are less than the original support method, which can effectively reduce the subsidon of the roof and the deformation of the two gangs. It is important to note that anchorage cable set support can effectively reduce shear fault areas in floor and two gang plastic areas, and reduce the weight of the pavement floor. This study provides a technical reference for the support of large sections of soft rock roadways in coal mines.

Details

Language :
English
ISSN :
19475705 and 19475713
Volume :
12
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Geomatics, Natural Hazards & Risk
Publication Type :
Academic Journal
Accession number :
edsdoj.72ed3e69845b4989a65c7eaf1ce98fa1
Document Type :
article
Full Text :
https://doi.org/10.1080/19475705.2021.1895327