充填步距和推进距离对基本顶下沉影响的数值模拟  

Numerical Simulation of Effects of Stowing Interval and Advancing Distance on Main Roof Sinking

作　　者：吴仕鹏[1] 唐海[1] 赵海龙[1] 

机构地区：[1]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《中州煤炭》2015年第12期54-58,共5页Zhongzhou Coal

基　　金：国家重点基础研究发展计划(973)资助项目(2013CB227904);湖南省科技厅计划项目资助(2014FJ3105)

摘　　要：工作面推进过程中,充填步距不仅决定基本顶的暴露时间,还影响充填开采的平行作业。以五亩冲煤矿为工程背景,利用FLAC3D软件模拟充填开采时基本顶的下沉移动规律。研究表明:随着充填步距的增大,工作面基本顶下沉位移逐渐增大;相同推进距离,当充填步距达到6 m时,基本顶下沉位移明显增大。In the process of working face advancing,stowing interval not only decides the exposure time of main roof,but also can guarantee the parallel operation of backfill mining. Based on the coal mine of Wumuchong Coal Mine,the software of FLAC3 Dwas used to simulate the sinking movement regularity of main roof when filling mining. Research shows that： with the increase of stowing interval,the main roof sink of face increases gradually; at the same advancing distance,the impact caused by stowing interval are more obvious when stowing interval reaching 6 m.

关 键 词：充填步距 弹性地基梁 基本顶 FLAC3D 平行作业 

分 类 号：TD823.7[矿业工程—煤矿开采]