摘要
针对某矿2502采区250206上工作面轨道巷,提出采用留窄煤柱沿空掘巷技术进行采掘。通过FlAC3D建模分析留设窄煤柱掘巷支护的方案,理论上研究了锚杆、锚索各个参数对巷道围岩变形控制的影响,确定了最优的参数。通过对250206上工作面轨道巷进行现场应用,对巷道围岩多个测点进行数据监测,证明采用最优参数支护对巷道围岩起到了很好的支护效果。
According to the railroad of NO. 250206 working face upper in NO. 2502 mining area of a coal mine, it put forward gob - side entry driving technology by retaining narrow coal pillar in mining. Through the FLAC3D modeling, it analyzed the program of retaining the narrow coal pillar for mining roadway supporting. In theory, it studied the effects of anchor rod and anchor cable on the deformation control of surrounding rock in roadway, thus determined the optimal parameters. By the site supporting application in railroad of NO. 250206 working face, it made the long - term data monitoring for multiple measurement points of surrounding rock in roadway, it proved that the optimal parameters supporting had good supporting effects for surrounding rock in roadway.
出处
《煤矿安全》
CAS
北大核心
2013年第6期37-40,共4页
Safety in Coal Mines
关键词
沿空掘巷
FLAC3D数值模拟
支护参数
巷道支护
围岩变形
窄煤柱
gob-side entry driving
FLAC3D numerical simulation
supporting parameters
roadway supporting
the deformation of surroanding rock
narrow coal pillar
