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.
出处
《煤矿安全》
北大核心
2017年第10期86-90,共5页
Safety in Coal Mines
关键词
奥灰水
定向钻孔
注浆改造
防治水
富水性
薄隔水层
Ordovician limestone water
directional drilling
grouting reconstruction
water prevention and control
water abun-dance
thin impermeable layer
