轻放采场围岩压力分布及矿压显现规律  

Distribution of Surrounding Rock Stress and Strata Behaviors of Light-Supported Fully Mechanized Top-Coal Caving Face

作　　者：常聚才[1] 谢广祥[1] 陈贵[2] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001 [2]淮北矿业集团公司朱仙庄煤矿,安徽宿州234111

出　　处：《采矿与安全工程学报》2007年第4期457-460,464,共5页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展规划(973)项目(2005CB221503)

摘　　要：工作面围岩压力分布及矿压显现规律是巷道合理布置和煤柱合理留设的关键因素,采用数值模拟、现场实测综合方法获得了轻放面围岩压力分布及矿压显现规律.研究表明:轻放回采巷道围岩及支架沿走向变形规律基本一致,可分为3个阶段;工作面围岩运动具有近场效应,轻放面平巷在临近工作面附近变形剧烈,平巷支护设计理念应从载荷控制向变形控制转变.The distribution patterns of surrounding-rock stress and strata behaviors are two key factors in roadway layout and coal pillar design. Numerical simulation and comprehensive field observation were carried out to investigate the distribution patterns of surrounding-rock stress and strata behaviors of light-supported fully mechanized top-coal caving face （LFMTC face）. The results show that the deformation of surrounding rocks and the supports of the gates are nearly the same along the strike in the I.FMTC face and it can be divided into three stages. The surrounding rock movement of the face has a near-field effect, the surrounding rock has a severe deformation near the face. Therefore, idea of supporting design for both the tailentry and headentry should be transferred from loading control to deformation control.

关 键 词：轻放面 支承压力 矿压显现 围岩压力 

分 类 号：TD823[矿业工程—煤矿开采]