Groundwater hazard is a main kind of geological hazard during the period of mine constructing.
建井期间，地下水害是煤矿地质灾害的主要类型之一。
The subsidence is one form of coal mine secondary of the geological calamity.
和龙市地质灾害主要为泥石流，其次是崩滑灾害。
The subsidence is one form of coal mine secondary of the geological calamity.
和龙市地质灾害主要为泥石流，其次是崩滑灾害。
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