Research On Stabiliy Controls And Supporting Technology In Deep Roadway Rock Under The Condition Of High Pressure

With the depth of mining increasing,ground pressure appeared more and more prominent has become one of the technology problems in China's coal production.In this paper,with high stress as a starting point,it summed up,on the basis of the failure mechanism and stability of surrounding rock in deep roadway,the theory of the deep roadway stability control(restoration of stress state-strengthening of surrounding state-consolidation of failure zone and repair of damage zone in part-transference of stress peak and enlargement of bearing zone).It also raised some technology countermeasures of deep roadway stability control.According to the rock classification system of deep mine and the surrounding rock lithology and the Physical and mechanical parameters of rock in Xing Yue mine,experimental roadway surrounding rock is medium class III, and the roadway bolting parameters were determined.On the base of the theoretical study and numerical simulation,bolting solutions were compared and analyzed.It considers that not only the roof and floor must be concerned,but also the sidewall.The best solution of deep roadway support was determined.Under the guidance of the deep roadway stability control theory, Xing Yue on coal mining area of South-track section of roadway Shihmen support construction,dynamic monitoring support effects,it conclded that this support program could control of roadway deformation. With good effects in the field,it will give the roadway stability control significance.