沿空留巷创新点的剖析及应用

Analysis and Application of Innovation Points in Gob-side Entry Retaining

煤炭是我国的主体能源之一。随着煤炭的逐步开采,其可采储量日益缩减,面对这一不可再生资源,势必要做到精采、细采。无煤柱开采有利于减少巷道掘进量、提高资源回收率、缓解采掘衔接紧张局面、提高经济社会效益等。沿空留巷是实现无煤柱开采技术的途径之一。本文通过对沿空留巷关键技术点的剖析,结合矿井的实际条件,提出了预裂切隙断顶+恒阻锚索补强支护的技术方案,改善了矿井安全生产条件、提高了经济技术指标、科学合理地实现了无煤柱开采。

Non-pillar mining is in favour of reducing the amount of roadway excavation,increasing the rate of resource recovery,relieving the tension of mining and tunnelling,improving the economic and social benefits and so on.Gob-side entry retaining is one of the ways to realize the non-pillar mining technology. This article analyzes the key technical points in gob-side entry retaining,according to the mine actual condition,puts forward the technical scheme,improves the mine safety production conditions,increases economic and technical indicators,realizes nonpillar mining scientifically and reasonably.