Numerical Optimization of Pressure-relief Boring in Floor of Tunnel in Three-soft Coal Seam

摘要：

　　According to heave problem of roadway in coal mine,L16 (45) orthogonal test with numerical simulation was designed including surrounding rock,vertical stress,coefficient of horizontal pressure and depth of bore hole and location.The optimized order of these factors and levels were obtained.Based on heave problem of roadway in soft coal measure strata,depth of pressure relief bore hole was optimized with numerical simulation.The appropriate depth of bore hole with diameter 150 ~ 300 mm should be greater than that of half of width of floor and less than that of grouted zone of cable.Comprehensive treatment should be considered including floor and wall in dealing with heave.

关键词： heave of roadway pressure-relief boring orthogonal test three-soft coal seam numerical optimization

作者: Wei Sijiang Yang Yushun

作者单位: School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo , China

会议类型: 国际会议

会议名称: International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention(岩石力学与矿井动力灾害防治国际学术研讨会)

会议地点: 辽宁阜新

会议语种:英文

页码: 52-57

在线出版日期: 2013-07-13（万方平台首次上网日期，不代表论文的发表时间）