深埋HJ复合型软岩硐室导硐法让压效果研究  

Research on Effect of Pressure Relief for Chambers in Deeply Buried HJ Composite Soft Rocks with Pilot-tunneling Method

作　　者：付厚利[1] 宋秀群[1] 茅晓辉[1] 

机构地区：[1]山东科技大学土木建筑学院,山东青岛266510

出　　处：《山东科技大学学报（自然科学版）》2009年第6期45-50,88,共7页Journal of Shandong University of Science and Technology(Natural Science)

摘　　要：通过采用FLAC3D有限差分软件并结合现场实测的方法,对深埋高应力(H)、节理化(J)复合型软岩硐室导硐法施工与支护技术进行了动态模拟与对比研究。工程实践证明,在深埋HJ复合型软岩地质条件下,采用导硐法施工能使围岩中的高应力得到释放,使扩刷后的围岩充分发挥自承能力。本研究为煤矿深部开采过程中类似工程地质条件的硐室施工及支护参数确定提供了可靠依据。The dynamic simulation and comparative study were made for the chambers in deeply buried, high stressed and joints fully developed composite soft rocks with pilot tunneling method by adopting the FLAC^3D finite difference software and combining with field measurement. The engineering practice shows that under the geological condition of deeply buried HJ composite soft rocks, the construction with pilot-tunneling method can release the high stress in surrounding rocks and allow the full play of self-bearing capacity of surrounding rock after the chamber enlarged. providing the reliable evidence to chamber construction and the determination of support parameters with similar engineering geological conditions in deep mining.

关 键 词：深埋HJ复合型软岩 导硐法 让压 动态模拟 

分 类 号：TD263.42[矿业工程—矿井建设]