小煤柱沿空掘巷采动应力研究及支护对策  

Study on Mining Stress and Support Measure of Gob-side Entry Driving with Small Pillar

作　　者：吴乐 郭相平[1,2] 

机构地区：[1]煤炭科学研究总院,北京100013 [2]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《煤炭技术》2018年第1期104-106,共3页Coal Technology

基　　金：国家自然科学基金煤炭联合基金重点项目(U1261211)

摘　　要：以金晖万峰煤矿为研究背景,基于小孔径水压致裂法与钻孔触探法测得的研究区域原位地质力学参数,采用有限差分数值计算软件FLAC^(3D)模拟分析1201工作面进风顺槽(沿空掘巷巷道)7 m小煤柱条件下采动应力演化规律,并确定小煤柱中性面位置,从而提出针对性的支护措施,在井下进行工业试验,并取得较好效果。Based on the geomechanical parameters of Jinhui Wanfeng coal mine measured by hydraulic fracturing in-situ stress measurement techniques and in-situ rock strength measurement techniques with contact detection method in small holes, the finite difference numerical calculation software FLAC3D was used to simulate the evolution law of mining-induced stress of 1201 gateway （roadway driving along goat） with 7 m small coal pillar. And the position of neutral plane was studied. Therefore, the support measure was put forward, and the field test proved the support measure was effective and was worth promoting.

关 键 词：沿空掘巷 数值模拟 采动应力 中性面 

分 类 号：TD322[矿业工程—矿井建设]