长壁复采面连续过空巷耦合支护机理研究  

Study on Coupling Support Mechanism When Longwall Repeated Mining Face Continuously Crossing Abandoned Roadway

作　　者：刘畅[1] 弓培林[1] 王开[1] 刘跃东[1] 

机构地区：[1]太原理工大学,山西太原030024

出　　处：《矿业研究与开发》2015年第4期38-41,共4页Mining Research and Development

基　　金：国家科技支撑计划项目(2012BAB13B04);山西省青年科技研究基金项目(2012021022-4)

摘　　要：复采面是对柱式开采后的残留煤体进行回采,通常会不可避免地连续通过不规则空巷,为工作面生产安全带来困难。以晋煤集团圣华煤业3101复采工作面为工程实例,通过分析采场关键块与空巷支护系统的力学平衡关系,提出了复采面过空巷"双拱结构"力学模型。对采场拱结构与锚固拱结构间的耦合关系进行了理论分析,提出了工作面大结构块体平衡所需支护阻力和空巷压缩拱平衡所需支护阻力的计算分析方法。通过数值模拟提出了空巷最佳超前支护时间,所确定的过空巷支护方案取得了较好的支护效果。Repeated mining face means to stope the residual coal after pillar mining,in which continuously crossing abandoned roadway was inevitable and brought difficulties to safe production.Taking 3101 coal mining face in Sanhua Mine as an engineering example,the mechanical model of double-arch structure was established,through analysis on mechanical equilibrium between key blocks in stope and support system in abandoned roadway.And the coupling relationship between the arch structures in stope and anchorage was theoretically analyzed.Furthermore,the calculated method was proposed for supporting resistance required in the balance of large structure block in working face and compressed arch in abandoned roadway.Finally,the optimal time for advance support was determined by numerical simulation.The selected support scheme achieved a good effect on abandoned roadway.

关 键 词：复采工作面 空巷支护 关键块 压缩拱 

分 类 号：TD353[矿业工程—矿井建设]