煤矿薄隔水层开采奥灰水害定向钻探防治技术
发布时间：2018-08-13 08:08
【摘要】：从韩城矿区薄隔水层条件出发,研究了桑树坪矿奥灰突水危险性,计算了奥灰顶部岩层的改造厚度,采用定向钻探工艺及注浆技术对桑树坪煤矿3110工作面奥灰顶部注浆改造治理,探明了煤层底板奥灰岩层地质构造及富水性,并对采后工作面涌水量进行预测,形成了薄隔水层开采奥灰水害防治方法,延伸了矿区安全开采下限。
[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.
【作者单位】： 中煤科工集团西安研究院有限公司;
【分类号】：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.
【作者单位】： 中煤科工集团西安研究院有限公司;
【分类号】：TD745.2
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