采空区下巷道开拓安全距离研究  

Research on safety distance of roadway development in goaf

作　　者：孙志猛 SUN Zhi-meng(Honghui No.1 Coal Mine,Gansu Jingyuan Coal and Electricity Group Co.,Ltd.,Baiyin 730412,China)

机构地区：[1]甘肃靖远煤电集团有限公司红会第一煤矿,甘肃白银730412

出　　处：《煤炭科技》2022年第2期71-74,共4页Coal Science & Technology Magazine

基　　金：国家自然科学基金面上项目(52174130)。

摘　　要：针对红会一矿南翼井田1500运输下山巷道开拓工程条件,巷道顶板距上方地方煤矿采空区仅23.3 m,为保证巷道开拓工作安全开展,预防巷道开拓活动波及上方采空区水体,防范矿山水害的发生,采用Mohr-Coulomb准则和数值模拟等方法探究巷道开挖后松动圈发育范围及特点。结果表明:巷道开挖后,顶板塑性区发育在2.7 m左右,两帮塑性区范围在1.9 m,呈对称分布;南翼井田巷道开拓活动不会对其上方采空区产生扰动效应。In view of the engineering conditions for the development of the 1500 downhill roadway in the south wing of Honghui No.1 Mine,the roof of the roadway was only 23.3 m away from the goaf of the local coal mine above.For the occurrence of water damage,the Mohr-Coulomb criterion and numerical simulation methods were used to explore the development range and characteristics of the loose circle after roadway excavation.The results showed that after the roadway was excavated,the plastic zone of the roof was about 2.7 m,and the plastic zone of the two banks was 1.9 m,which was symmetrically distributed;the roadway development activities in the south wing minefield would not produce disturbance effect on the goaf above it.

关 键 词：采空区下 巷道开拓松动圈 数值模拟 

分 类 号：TD263[矿业工程—矿井建设]