The deep underground mining techniques such as rock-burst and high temperature prevention presented he...
介绍的防岩爆、防高温等深井采矿技术，值得同类矿床借鉴。
Ventilation is a major consideration in underground mining. Many mines are so deep that adequate air must be pumped in; others have problems with heat and humidity.
通风是地下采矿必须考虑的重要问题。很多矿井都很深，因此必须送人足够的空气。有的矿井还有高温和潮湿的问题。
The stability of horizontal pillars in deep mining is one of the common technical challenges that should be solved urgently for underground metal mines.
深部水平矿柱开采的稳定性问题，是地下金属矿山迫切需要解决的共性技术难题之一。
Serial blasting crater test method was used in underground medium and deep hole mining of Dahongshan copper mine for determining drilling and blasting parameters, and good results were obtained.
大红山铜矿地下中深孔采矿中，采用系列爆破漏斗试验方法确定中深孔采矿凿岩爆破参数，取得了较好的效果。
The second phase of underground mining of Tonglushan Mine, Daye Non-ferrous Metals Company, will be finished, and the third phase of deep mining is going to be carried.
大冶有色金属公司铜绿山矿二期工程地下开采接近尾声，即将开展三期工程深部开采开拓。
With the increase of mining depth, the underground heat harm becomes more serious. Especially for deep shaft conditions, the temperature lowering has become a very important content in safety work.
随着矿井开采深度的增加，井下的热害日趋严重，尤其对于深井条件下，降温工作就成了安全工作极为重要的内容。
We are puzzled by the pervious to water, the underground coal seam fire prevention, the question of deep zone mining and coal mining from incidence in Jixi.
透水、地下煤层防灭火、深部开采问题、大倾角采煤已经成为困扰鸡西煤炭开采的技术问题。
The mining minister in Chile says all is going well in the efforts to bring to the surface 33 miners who have been trapped deep underground for more than two months.
智利矿务部长表示，拯救33名被困矿工的工作进展顺利。这33名矿工已经在地面以下深处被困了超过两个月的时间。
The mining minister in Chile says all is going well in the efforts to bring to the surface 33 miners who have been trapped deep underground for more than two months.
智利矿务部长表示，拯救33名被困矿工的工作进展顺利。这33名矿工已经在地面以下深处被困了超过两个月的时间。
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