Research on floor heave mechanism and control technology in soft rock roadway

Ding Chen

doi:10.19896/j.cnki.mtkj.2025.04.011

Abstract：Given that soft rock roadways are often subjected to complex stress environments of mining induced stress and weak sur-rounding rock,their deformation and failure modes exhibit diverse characteristics.The transportation roadway of Wuyang Coal Mine was selected as the research object,an engineering scale UDEC Trigon numerical model was constructed to deeply explore the deformation mechanism of surrounding rock,development law of fractures,and evolution range of plastic zone in deep soft rock roadway.On this ba-sis,a comprehensive control technology scheme was proposed,which combined multiple aspects such as"reinforcement of roof corner anchor cables,supporting of side anchor cables,concrete arch structure,and reinforcement of floor anchor cables",and the reasonable technical parameters were determined.This scheme was practically applied in the transportation roadway of Wuyang Coal Mine.The re-sults showed that the deformation of surrounding rock of roadway tended to stabilize after about 50 days of adjustment,and the overall deformation rate of roadway section was strictly controlled within 5%,with significant control effects.This not only provides theoretical support for the stable control of deformation of surrounding rock in soft rock roadways,but also provides technical references for relevant engineering practices.