矿区土地复垦是一项极其综合的系统工程，其整个过程涉及到大量的空间数据与空间信息。
Mining land reclamation is a very complex systemic project. There are a lot of spatial data and spatial information during the whole procedure.
沉陷地土地资源信息随着煤炭的开采而不断变化，所以，矿区土地复垦空间数据库是一个时态数据库。
The spatial information database of land reclamation is a temporal database due to the change of land resource with the coal mining.
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.
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