摘要
为保证红一煤矿半煤岩巷道围岩的稳定及煤矿安全开采,以红一煤矿运回联巷为工程背景,运用钻孔探测及数值模拟的方法,研究了试验段巷道顶板内部裂隙发育规律,并对比分析矩形断面和直墙半圆拱形巷道围岩塑性区及位移分布特征。研究结果表明:试验段巷道围岩锚固体承载结构相对较弱,直墙半圆拱形断面受力优于矩形断面,且直墙半圆拱形断面巷道变形小于矩形断面巷道变形。现场实测验证了以上观点。
Approach to ensure the stability of the half coal rock roadway in Hongyi coal mine and the safety of mining, shipped back to the united roadway as an engineering background, using drilling probe and numerical simulation, study the test section of roadway roof internal fissures, and comparative analysis of rectangular cross-section and straight wall semicircle plastic zone of surrounding rock and displacement distribution.The results show that: test section roadway anchor bearing structure is relatively weak,straight wall sections semicircle force better than rectangular crosssection, straight wall semicircle section roadway deformation less than rectangular cross-section of roadway deformation.Field test validate these views.
出处
《煤炭技术》
CAS
北大核心
2015年第9期49-52,共4页
Coal Technology
基金
煤炭资源与安全开采国家重点实验室自主研究课题资助项目(12KF01)
关键词
半煤岩巷
支护优化
FLAC3D
直墙半圆拱形
钻孔探测
half coal rock roadway
supporting optimization
FLAC3D
straight wall semicircle
drilling probe
