高应力复合顶板下煤巷锚杆支护技术的应用

摘要

In view of the high stress composite roof supporting difficulty in F 15-23110 machine lane of Pingmei No.4 Mine, the high strength prestressed deformable pressure anchor and equalizing bird's nest anchor combined support technology according to the theory of suspension and composite beam design is applied. And the roadway surrounding rock deformation observation and the bolt drawing test is carried out. The results show that the supporting way to effectively control the deformation of roadway under high stress and composite roof, ensuring the safety mining of mining face.%针对平煤四矿己15-23110机巷高应力复合顶板支护困难问题，采用根据悬吊和组合梁理论设计的高强预应力可变形让压锚杆和均压鸟窝锚索联合支护技术，并进行了巷道围岩变形观测和锚杆拉拔试验。结果表明，该支护方式有效控制了高应力、复合顶板下巷道变形，为工作面安全回采提供了保证。