There is some significance in reclamation by filling the depressions with coal gangue, but this method makes serious environment pollution, especially, to the groundwater and soil.
利用煤矸石填充塌陷区，对矿区土地复垦起到一定的积极作用，但煤矸石的淋溶渗滤液，已给地下水资源和土壤带来了极大的污染。
There is some significance in reclamation by filling the depressions with coal gangue, but this method makes serious environment pollution, especially, to the groundwater and soil.
利用煤矸石填充塌陷区，对矿区土地复垦起到一定的积极作用，但煤矸石的淋溶渗滤液，已给地下水资源和土壤带来了极大的污染。
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