西北干旱区煤炭基地生态蓄水模式研究

西北干旱区煤炭开采产生的矿井水大多就近排放,利用率低.同时,该地区水资源严重缺乏,尤其是生态用水紧缺,煤炭开采造成地下水资源浪费和生态用水紧缺的矛盾局面.为缓解这一矛盾,提出地面人工湿地及生态储水的设想,构建两种基于生态用水的地面处理储存矿井水的模式,该模式下矿井水通过下渗补给潜水含水层,进而供给地表植被;另一方面,利用干旱区蒸发量大的特点借助低空大气环流输送水份,增加局部降水量,从而实现改善生态环境的目的.

Theoretical Study on Ecological Water Storage Model of Coal Base in Northwest China

The mine water produced by the coal mining in the arid area of the northwest is mostly discharged, and the utiliza-tion rate is low. At the same time, the lack of water resources in the region, especially the shortage of ecological water, coal min-ing caused by waste of groundwater resources and ecological water shortage contradiction situation. In order to alleviate this contra-diction , the idea of ground artificial wetland and ecological water storage is put forward to construct two kinds of groundwater treat-ment based on ecological water storage. Under the mode, the mine water is supplied to the diving aquifer by infiltration, On the other hand, the use of large-scale evaporation of arid zones with low-altitude atmospheric circulation of water, increase the a-mount of local precipitation, in order to achieve the purpose of improving the ecological environment.