浅析较坚硬煤层深孔高压注水

Talking about deep hole high prussure water injection in harder coal seam

在中硬以上的较坚硬煤层进行煤体深孔高压注水 ,从而软化煤体硬度提高破煤速度 ,进而提高劳动生产率。

Coal body is watered by deep hole high pressure above mid-hard coal seam to soften the harder coal so as to improve the working efficience.It's a new way for mechanization mining in harder seam.