Dynamic Analysis on Water Inrush from Fault in Floor
In this paper,the deficiency on present mechanism of water inrush from floor is analyzed and it is found that water inrush from fault not only relative with static loads,but also with dynamic loads,especially faults in deep are easily acted by low dynamic loads.Based on fracture mechanics,the fault activation model is built and the stress intensity factor is calculated in view of the deficiency on present mechanism of water inrush from floor.The influence on fault depth,faultlength,fault span,fault thickness,underground water pressure is considered in the model for faults in deep.Whether the fault is active is judged by strain energy density factor.The strain energy density factor is relative with fault parameters.It is reverse with fault thickness,positively increases with fault depth and stope span.It also positively increases with dynamic loads and acting time.
fault water inrush dynamic analysis stress intensity factor
ZHOU Zhihua CAO Ping YE Zhouyuan WANG Yi-xian
School of Resources and Safety Engineering,Central South University,Changsha 410083,China;School of School of Resources and Safety Engineering,Central South University,Changsha 410083,China School of Energy and Safety Engineering,Hunan University of Science and Technology,Xiangtan411201,Ch School of Civil Engineering,Hefei University of Technology,Hefei,230009,China
国际会议
沈阳
英文
773-777
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）