矿井水污染的地表水灌溉入渗过程中的水岩作用

Water-Rock interaction during irrigation with polluted water by coal mine drainage

分析了污水灌溉对地下水化学环境影响的研究现状 ,以淄博煤矿区矿井水污染的孝妇河水进行灌溉的区域为例 ,利用土柱实验研究煤矿矿井水污染的地表水灌溉入渗过程中的水岩作用。结果表明 ,灌溉水入渗过程中发生可溶盐的溶解及离子交换等水岩作用 ,而且在灌溉的初期主要表现为溶解作用 ,而后以离子交换作用为主。溶解作用的速率 ,在污水入渗初期大 ,而后逐渐减小 。

Based reviewing on the study state of the sewage irrigation's effect on the groundwater quality, taking the irrigation area with water polluted by coal mine drainage in Zibo coal districts as a example, the water-rock interaction during the process of polluted water irrigation is studied. The results show that the water-rock interaction, such as dissolution and ion exchange, happens during the irrigation water permeation, and during the first process of the irrigation, the dissolution is major, with the development of the irrigation, the ions exchange is got more and more important. In the first process of the irrigation, the dissolution rate is big, but it is got smaller and smaller with the time of the irrigation,even to zero.