1.Borehole hydromining is a kind of safe and efficient new mining method .
钻孔水力采煤是既安全、又能极大地提高资源利用率的新的采矿方法。
2.The acoustoelectric effect of rock is investigated with experimental method in model borehole.
在模型中对岩石的声电效应进行了实验研究。
3.It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.
岩土工程勘察的手段,包钻、、、坑、洞以及物、触等。
4.It is found that the rational located destressing boreholes can induce structural failure of the surrounding rock-mass,consequently the high stress move deeply in the rock-mass,and the stres...