针对潞安王庄煤矿采区煤柱回收工作面存在过空巷巷道围岩控制困难的问题,建立了煤柱回收工作面空巷基本顶力学模型,得出当空巷宽度增大时,空巷所需的支护阻力也会随之增大;空巷支护阻力与基本顶厚度之间存在线性关系,基本顶越厚空巷所需支护阻力越大;当支架的支护阻力增加时,空巷支护阻力呈线性减小趋势。将整个工作面空巷划分为3个空巷集中区,研究了工作面过第3空巷区4条空巷时回采巷道支护、空巷围岩稳定控制技术,制定了工作面过空巷时放煤控制、两巷超前加强支护、工作面顶板管理等安全保障措施,保证了煤柱回收工作面安全回采。

According to the surrounding rock difficult contral problem of the used gateway when the coal pillar mining face was passing through the used gateway, a mechanics model of the main roof in the used gateway was established for the coal pillar mining face.When the width of the used gateway was increased, the support resistance required for the used gateway would be increased and there was a liner relationship between the support resistance of the used gateway and the thickness 0 f the main roof.The higher thickness of the main roof, the support resistance required by the used gateway would be higher.When the support resistance of the support was increased, the support resistance of the used gateway would be in liner reduced tendency.Based on the whole used gateway of the coal mining face divided into thr ee concentrated zones of the used gateway, the support technology of the mining gateway and the surrounding rock stable control technology when the coal mining fac e was passing through 4 used gateways in No.3 used gateway zone were studied.The top coal caving control when the coal mining face passing through the used gate way, advance reinforced support of the two gateways, roof control of the coal mining face and other safety protection measures were set up to ensure the safety mining operation of the coal pillar mining face.

江苏省高校优势学科建设工程资助项目(SZBF2011-6-B35)；江苏省研究生培养创新工程资助项目(CXZZ12_0950)；