Research on Bolt-Cable Reinforcement Support Technology for Gob-Side Entry Retaining in "Three-Soft" Coal Seams

Qi Li; Xiaolong Wang

doi:10.63313/AERpc.9069

Authors

Qi Li School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, China Author
Xiaolong Wang School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, China Author

DOI:

https://doi.org/10.63313/AERpc.9069

Keywords:

, Gob-side entry retaining, Surrounding rock control technology, Combined bolt-cable reinforcement support technology

Abstract

This paper focuses on the application of the gob-side entry retaining technology under complex surrounding rock conditions in "Three-Soft" coal seams. Numerical analysis was conducted using FLAC to study the ground pressure behavior before and after gob-side entry retention in such seams. The research shows that when applying gob-side entry retaining technology under complex roof conditions in "Three-Soft" coal seams, roof subsidence is difficult to control. By utilizing surrounding rock control technology and combined bolt-cable reinforcement support technology, the bearing capacity of the surrounding rock is fully mobilized. This enables the bolts, cables, and surrounding rock to jointly support the roof, thereby reducing excessive subsidence of the retained entry roof. Under reasonable roadway support conditions, the gob-side entry retaining technology proves to be effective and significantly improves mining efficiency.

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