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本文介绍大水头煤矿在高瓦斯易燃松软破碎特厚煤层中沿空送巷的技术。通过对煤体破碎状况的测试,得出煤柱体侧的破坏有限的结论;并通过对煤柱体侧应力分布测试及破坏范围估算,确定煤柱尺寸范围。为利于防灭火及瓦斯管理,沿空送巷用锚网支护,采取有力防范措施防止灾害发生,取得了成功。
This article describes the Dashuitou coal mine in the high gas flammable soft thick coal seam conveyor technology along the gap. Through the test of the broken state of coal, the conclusion that the damage of the coal pillar is limited is obtained. Through the test of the stress distribution on the side of the coal pillar and the estimate of the damage range, the coal pillar size range is determined. In order to facilitate fire prevention and gas management, along the roadway with anchor net support, take effective preventive measures to prevent disasters, and achieved success.