The purpose of underground methane drainage technology is to prevent methane disasters and enable the efficient use of c......

作为一项基础的工程，切顶卸压技术在巷道可以为矿井下生产运输提供全面的应用，提升采矿生产的安全系数，使其可以发挥重要的含义。就矿......

As longwall caving mining method prevails rapidly in China coal mines, amount of gas emission from longwall faces and go......

To enhance the technology and efficiency of strata injection is a problem to be solved urgently. Because of effected by ......