Stability Control of Deep Coal Roadway under the Pressure Relief Effect of Adjacent Roadway with Large Deformation: A Case Study

High-efficiency maintenance and control of the deep coal roadway surrounding rock stability is a reliable guarantee for sustainable development mine. However, it difficult to that locates near with large deformation. With return air 21201 (RAR 21201) in Hulusu mine as research background, situ investigation, theoretical analysis, numerical simulation, engineering practice were carried out study pressure relief effect on after severe deformation roadway. Besides, feasibility excavating new this damaged one by means also discussed. Results showed strong mining suffered huge loose deformation, space inside shrank so violently released high stress extent, which formed certain rock. Through deformed one, could obtain relative low environment help effect, beneficial itself. Equal row spacing double-bearing ring support technology proposed out. Engineering indicates excavated escaped from possible separation fracture roof anchoring range, well controlled, verifies mentioned. This paper provides reference scientific under condition buried western China.