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。
As the economic speed is creasing, the request of the mining quantity of the underground water resources is creasing too.
并且随着经济速度的不断加快，对地下水资源开采量要求也不断提高。
Tthey formed complicated underground steam caves, which have good or bad influence on tourism, water supply, water power energy utilization, mining and underground construction.
它们在旅游、供水、水能利用、采矿及地下工程建筑等方面对人类有着重要的利、弊影响。
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