摘要
工作面推进速度是影响顶板岩层稳定性的重要因素之一。为了研究综采工作面推进速度对顶板岩层破坏高度的影响,以神东矿区上湾煤矿煤层赋存条件及开采参数为研究背景,采用FLAC3D模拟软件,进行工作面不同推进速度的数值模拟计算。结果表明:随着运算时步的增大(推进速度的减小),顶板岩层破坏高度的增加越来越快,破坏高度越来越大。因此煤矿开采应尽可能地增大推进速度,保证矿井生产能够高产高效地进行。
Drawing speed of working face is one of the important factors which influence the stability of roof rock. In order to investigate the influence of mining velocity on damage height of roof rock at a fully mechanized mining face, taking the occurrence conditions and mining parameters of coal seam of Shendong mining area Shangwan coal mine as research background, the numerical simulation calculation of coal face at different mining speeds were studied by FLAC3 Dsimulation software. The results showed that with increasing of time step(decreasing of excavation velocity), the damage height of roof rock grew more and more rapidly, the damage height were bigger and bigger. Therefore, coal mining should as far as possible increase the mining velocity to ensure mining production can be carry on with high production and high efficiency.
出处
《煤炭技术》
CAS
北大核心
2015年第9期11-13,共3页
Coal Technology
基金
国家自然基金(51344002)
山西省青年基金(2013021029-1)
太原科技大学博士启动基金(20122006)
关键词
综采工作面
推进速度
顶板岩层破坏高度
数值模拟
fully mechanized mining face
mining velocity
damage height of roof rock
numerical simulation
