小跨度控顶开采水体下压煤

Mining of coal below water body with strip short wall

针对水体下近距离压煤开采难题和小跨度条采实践，着重探讨了小跨度条采的失败原因和小跨度控顶开采的技术途径，并论证了采用锚固窄煤柱群实行水体下近距离缓倾斜中厚煤层控顶开采的可行性。

Abstract Under the condition that water body is nearly above the coal seam, the mining arrangement is very difficult. The causes resulting this mining method in failure and its improvement approaches are specially discussed according to the practial work of strip short wall. Under the mentioned condition, it is proved that using bolt to reinforce narrow pillars left by strip short wall mining is feasible for the roof contorl.