近距离、高应力条件下的煤层巷道支护技术

Supporting Technology of Coal Roadway under Closed-distance and High-stressed Condition

近距离煤层群开采时,下层煤的巷道往往受上层煤留设煤柱的影响,出现顶底板移近量加大、底鼓等现象,严重影响了工作面的安全生产。针对该类巷道变形问题,提出了采用高强度新型锚杆支护体系,有效保证了高应力下煤巷的稳定。

When mining at near-neighbored coal seams, roadways of lower seams are often influenced by the protection pillars of upper seams, accompanied by some phenomena like roof-floor deformation and floor heave, etc. The safety production is impaired. The paper proposes using high-strength bold supporting system to solve the deformation, which actually ensures the roadway stability under the high stress.