腾晖矿松软厚煤层动压回采巷道矿压显现规律研究  

Mine pressure behavior of mining roadway in Soft thick seam under dynamic pressure in Tenghui Mine

作　　者：李清[1,2] 曹怀建[1,3] 侯健[1] 马万权[1] 王梦远[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]深部岩土力学与地下工程国家重点实验室,北京100083 [3]霍州煤电集团河津腾晖煤业有限责任公司,山西霍州031400

出　　处：《煤炭工程》2016年第10期70-73,共4页Coal Engineering

基　　金：国家自然科学基金资助项目(51374212;51134025)

摘　　要：为分析松软厚煤层动压回采巷道矿压显现规律,采用现场较全方位的实测方法,对动压巷道支护受力随本工作面推进时的动态演变特征进行深入探究。结果表明:二次动压下正巷与初次动压下副巷支护轴向受力曲线演变特征在时间与空间上具有同步性;两巷支护轴向受力曲线整体演化特征是工作面推进速率、老顶岩梁运动状态、支承压力分布规律等多因素共同作用的结果;正巷锚杆(索)轴向受力曲线演变速率增长程度及曲线"凸变"和"凹变"幅度明显高于副巷;正巷与副巷帮锚杆轴向受力曲线"凸变"幅度与距工作面煤壁距离呈正相关;应着重提高二次动压下正巷围岩支护强度,维护巷道围岩稳定,以更好服务于本工作面回采。In order to analyze the mine pressure behavior of mining roadway in soft thick seam,the omnibearing institution monitoring was used to research the dynamic characteristics of roadway during advance of working face. The result shows that,the evolution of support axial force curve has the characteristic of synchronization in the time and space between the haulageway with the second dynamic pressure and airway with the initial dynamic pressure. The evolution characteristics of support axial force curve between the haulageway and airway are produced by multi-factors including the advance velocity of working face,mobilizing state of rock beam and abutment pressure on the whole. The extent of evolution velocity and range of concave and convex deformation of curve with bolt and cable axial force in haulageway is higher than airway. The range of concave of curve with bolt and cable in haulageway and airway has a positive correlation with advance of working face,The support strength in haulageway should be enhanced to supply service for the advance of working face.

关 键 词：松软厚煤层 动压 回采巷道 矿压规律 

分 类 号：TD263[矿业工程—矿井建设]