优化巷道布置减轻地表沉陷危害

Optimization of Roadway Layout to Reduce Harm of Surface Subsidence

地表沉陷是煤矿开采后的主要地质灾害之一,其危害性严重。为减轻地表沉陷对地面建筑物的破坏,提出了充填开采的方法,然而煤矿采用充填开采经济成本大。从优化巷道布置、改善巷道布置系统角度出发,由传统巷道布置的平面系统到错层位巷道布置的立体化转化来减少地表沉陷的危害。从理论上分析了采用错层位巷道系统使多个工作面形成单一超长工作面,地表沉陷为平底状,相异于传统的波浪状。并运用数值模拟方法验证了错层位布置系统从一定程度减轻了地表沉降危害,对煤矿开采具有一定的指导意义。

The surface subsidence is one of the main geological disasters after coal mining. To reduce damage of surface subsidence to the ground buildings, proposed filling mining method,it is not reasonable of economy for some coal mine to use filling mining. Optimized roadway layout reasonably and improved the roadway layout system to reduce the harm of surface subsidence from the plane system of the traditional layout of roadway to the three-dimensional system of the stagger arrangement roadway layout. The stagger arrangement roadway layout which enabled multiple faces from a long face,the shape of surface subsidence is flat, which is different from traditional wavy. Verified that the stagger arrangement roadway layout reduced the harm of surface subsidence to a certain extent by using numerical simulation.It is significant for coal mining.