The inverted fissure in ZK552 borehole on a mining area has made leakage.
某矿区ZK552钻孔中的“倒裂隙”造成漏失。
The measuring principle, hardware circuit principle and software design of WGL-1 intelligent mining borehole depth and dip meter are introduced.
介绍了智能WGL-1型采矿中深孔深度倾角测量仪的测量原理，硬件电路原理及软件设计。
This paper analyses problems concerning the conventional continuous loading structure in open mining deep borehole blasting.
本文分析了露天矿深孔爆破长期沿用的连续装药结构存在的问题。
Besides, elaborate technology economy compare about the technics and technology of mining coal bed methane by drilling borehole down and cross the seam is carried out.
此外，本文还对顺层钻孔和穿层钻孔抽采煤层气的工艺技术进行了详尽的技术经济比较。
With the yearly increase of the depth of open-pit mining, the water infiltration of borehole can not be ignored.
露天矿开采深度逐年增加，炮孔内的渗水越来越不容忽视。
In the course of surface mining, it is easy to exit bedrock and affect loading if the borehole is bad quality;
在露天矿山开采中，如果钻孔质量不好，爆破后易留有根底，直接影响铲装；
In the course of surface mining, it is easy to exit bedrock and affect loading if the borehole is bad quality;
在露天矿山开采中，如果钻孔质量不好，爆破后易留有根底，直接影响铲装；
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