煤礦薄隔水層開(kāi)采奧灰水害定向鉆探防治技術(shù)
發(fā)布時(shí)間:2018-08-13 08:08
【摘要】:從韓城礦區(qū)薄隔水層條件出發(fā),研究了桑樹(shù)坪礦奧灰突水危險(xiǎn)性,計(jì)算了奧灰頂部巖層的改造厚度,采用定向鉆探工藝及注漿技術(shù)對(duì)桑樹(shù)坪煤礦3110工作面奧灰頂部注漿改造治理,探明了煤層底板奧灰?guī)r層地質(zhì)構(gòu)造及富水性,并對(duì)采后工作面涌水量進(jìn)行預(yù)測(cè),形成了薄隔水層開(kāi)采奧灰水害防治方法,延伸了礦區(qū)安全開(kāi)采下限。
[Abstract]:Based on the condition of thin water-barrier layer in Hancheng mining area, the danger of water inrush of Ordovician ash in Sangshuping Mine is studied, and the reconstruction thickness of the rock layer at the top of Ordovician Ash is calculated. By using directional drilling technology and grouting technology to improve the top of Ordovician ash in 3110 face of Sangshuping Coal Mine, the geological structure and water enrichment of the Ordovician layer on the floor of coal seam have been proved, and the water inflow in the post-mining face has been predicted. The prevention and cure method of Ordovician ash water hazard in thin layer mining is formed, and the lower limit of safe mining in mining area is extended.
【作者單位】: 中煤科工集團(tuán)西安研究院有限公司;
【分類號(hào)】:TD745.2
[Abstract]:Based on the condition of thin water-barrier layer in Hancheng mining area, the danger of water inrush of Ordovician ash in Sangshuping Mine is studied, and the reconstruction thickness of the rock layer at the top of Ordovician Ash is calculated. By using directional drilling technology and grouting technology to improve the top of Ordovician ash in 3110 face of Sangshuping Coal Mine, the geological structure and water enrichment of the Ordovician layer on the floor of coal seam have been proved, and the water inflow in the post-mining face has been predicted. The prevention and cure method of Ordovician ash water hazard in thin layer mining is formed, and the lower limit of safe mining in mining area is extended.
【作者單位】: 中煤科工集團(tuán)西安研究院有限公司;
【分類號(hào)】:TD745.2
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