现在的采矿工程已不仅是开采问题，而且还要注意围岩稳定性和岩层控制。
Now the mining engineering problem has been not just the mining issues, but also to pay attention to stability and surrounding rock strata control problems.
该模型可用于定量研究油气向采油井的运移规律和现今油气田的最佳开采问题。
The model can be used in the quantitative study of the problems in migration laws of oil flowing to crude oil production Wells and the best development of the existing oil fields.
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。
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.
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