高瓦斯软煤层矿井窄小煤柱支护技术优化探究
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摘要
随着煤炭资源的不断枯竭,如何减少综放开采时的煤炭资源损失量,提高回采率成为矿井主要研究的课题。针对高瓦斯软煤层的特性,合理减小护巷煤柱尺寸,达到有效支撑顶板压力、减少采空区积水与瓦斯渗透的效果,对于矿井降低煤炭开采损失、减少巷道支护和维护成本、提高经济效益、保证矿井安全生产等具有重要意义。大水头煤矿自2001年以来,通过对综放工作面窄小煤柱护巷技术不断进行试验和总结,优化改造窄小煤柱支护技术,总结得出了适宜高瓦斯软煤层综放开采条件下的窄小煤柱护巷技术。
The continuous drainage of the coal resources has put forward a major research subject: how to reduce the loss of coal resources in fully-mechanized caving mining and improve recovery rate. Considering characteristics of high gas-content soft coal seams, it was of great importance for the reduction of loss of coal in mining,lowering of tunnel supporting and maintenance costs, enhancement of economic benefits and guarantee of safety production in mine to reasonably reduce the size of tunnel-supporting coal pillars, effectively support roof pressure and reduce the infiltration of water and gas in goaf. Since 2001, Dashuitou Coal Mine has continuously improved the supporting technology of narrow and small pillars with unceasing tests on the fully-mechanized caving face and summarization thereof. With such efforts, it has finally concluded the tunnel-supporting technology with narrow and small coal pillars suitable for the fully-mechanized caving mining condition in coal mines with high gas content and soft seams.
The continuous drainage of the coal resources has put forward a major research subject: how to reduce the loss of coal resources in fully-mechanized caving mining and improve recovery rate. Considering characteristics of high gas-content soft coal seams, it was of great importance for the reduction of loss of coal in mining,lowering of tunnel supporting and maintenance costs, enhancement of economic benefits and guarantee of safety production in mine to reasonably reduce the size of tunnel-supporting coal pillars, effectively support roof pressure and reduce the infiltration of water and gas in goaf. Since 2001, Dashuitou Coal Mine has continuously improved the supporting technology of narrow and small pillars with unceasing tests on the fully-mechanized caving face and summarization thereof. With such efforts, it has finally concluded the tunnel-supporting technology with narrow and small coal pillars suitable for the fully-mechanized caving mining condition in coal mines with high gas content and soft seams.
引文
[1]温克珩.窄小煤柱护巷的矿压显现规律及其支护技术研究[D].西安:西安科技大学,2005.
[2]刘德成.突出矿井薄煤柱沿空掘巷瓦斯赋存规律及瓦斯防治技术研究[J].煤炭科技,2018(3):20-21,28.
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[8]王磊.马兰矿12504工作面窄小煤柱稳定性研究[J].山西煤炭,2013,33(4):52-55.
[9]石启杭.煤矿深部复杂条件巷道支护技术选择[J].煤炭科技，2018(4):67-69.
[10]杨凯.煤矿深部巷道原始地应力测试与分析[J].煤炭科技，2016(4):36-37.
[2]刘德成.突出矿井薄煤柱沿空掘巷瓦斯赋存规律及瓦斯防治技术研究[J].煤炭科技,2018(3):20-21,28.
[3]孙龙琦,李阳,赵龙龙.复合顶板中厚煤层沿空掘巷煤柱宽度研究[J].陕西煤炭,2014,33(4):20-22.
[4]张治璞,赵总彦.靖远矿区留设窄小煤柱开采技术的研究及应用[J].煤,2013,22(4):9-10.
[5]乔立瑾.沿空留巷窄小煤柱结构及巷道稳定性研究[J].煤炭技术,2012,31(10):75-77.
[6]刘军,张伟.窄小煤柱沿空掘巷围岩变形控制技术研究[J].河南科技,2014(14):27.
[7]黄太光.在窄小煤柱中掘进巷道的顶板管理[J].煤炭技术,2007,26(4):71-72.
[8]王磊.马兰矿12504工作面窄小煤柱稳定性研究[J].山西煤炭,2013,33(4):52-55.
[9]石启杭.煤矿深部复杂条件巷道支护技术选择[J].煤炭科技，2018(4):67-69.
[10]杨凯.煤矿深部巷道原始地应力测试与分析[J].煤炭科技，2016(4):36-37.
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