深埋采区巷道围岩地应力测试研究  

Study on in-situ stress measurement of roadwaysurrounding rock in deep mining area

作　　者：李红友 姚方兴 Li Hongyou;Yao Fangxing(Guotun Mine,Linyi Mining Group Heze Coal and Electricity Co.,Ltd.,Heze 274000,China;School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]临沂矿业集团菏泽煤电有限公司郭屯煤矿,山东菏泽274000 [2]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《煤炭与化工》2023年第5期1-3,8,共4页Coal and Chemical Industry

摘　　要：地应力与围岩强度之间的关系是影响煤巷围岩变形的主要因素,而地应力的大小和方向对煤巷围岩的稳定起着决定性的作用。因此,加强巷道围岩地应力试验和分析具有重要的现实意义。本文采用空心包体法对郭屯矿采区的地应力进行了测量,结果表明:该矿最大水平主应力均值为15.7 MPa,为最小水平主应力值的0.60~0.62倍,二者差值较小,有利于巷道稳定。基于常用应力量级判断标准,该煤矿井下地应力整体处于低、中地应力值区域,揭示了该矿采区巷道围岩周围地应力的三维分布规律。The relationship between in-situ stress and surrounding rock strength is the main factor affecting the surrounding rock deformation of coal roadway,and the magnitude and direction of in-situ stress play a decisive role in the stability of surrounding rock of coal roadway.Therefore,it is of great practical significance to strengthen the in-situ stress test and analysis of roadway surrounding rock.The hollow inclusion method was used to measure the in-situ stress in deep mining area,and the results showed that the average value of the maximum horizontal principal stress of the mine was 15.7MPa,which was 0.60-0.62 times of the minimum horizontal principal stress.The difference between the two was small,which was conducive to roadway stability.Based on the common stress level judgment standard,the underground ground stress of the coal mine was generally in the low and medium ground stress value area,and the three-dimensional distribution law of ground stress around the roadway surrounding rock in the mining area was revealed.

关 键 词：巷道围岩 地应力 测试系统 

分 类 号：TD322[矿业工程—矿井建设]