煤矿薄隔水层开采奥灰水害定向钻探防治技术  

Ordovician Limestone Water Prevention and Control by Directional Drilling Technology in Coal Mining Above Thin Impermeable Layer

作　　者：金鑫 段会军 尚荣 郑玉柱 

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《煤矿安全》2017年第10期86-90,共5页Safety in Coal Mines

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。Based on the analysis of thin impermeable layer in Hancheng Mining Area, the risk of Ordovician limestone water inrush in Sangshuping Coal Mine was studied. The reconstructed thickness of the top layer of Ordovician limestone was calculated.Using directional drilling technology and grouting technology, the top layer of Ordovician limestone of 3110 working face in Sangshuping Coal Mine was treated. Geological structure and water abundance of Ordovician limestone of seam floor in underground coal mine were proved up. Meanwhile, water inflow of working face after mining was predicted. The method of Ordovician limestone water prevention and control mining above thin impermeable layer was formed. The lower limit of safe mining in coal mine area was extended.

关 键 词：奥灰水 定向钻孔 注浆改造 防治水 富水性 薄隔水层 

分 类 号：TD745.22[矿业工程—矿井通风与安全]