井工矿开采对窟野河水资源的影响

为了定量研究流域内井工矿开采对水资源的影响,采用Mann-Kendall-Pettitt方法检测窟野河1966—2009年年径流的突变点,利用水文模型(SWAT和SWAT-VISUAL MODFLOW)定量计算井工矿开采对窟野河流域1997—2009年径流及2009年地下水的影响。结果表明,井工矿开采是该时期径流锐减及地下水疏干的主要原因,其对年径流减少的贡献量为24.20 mm,占总减水量的64.16%,对地下水的影响量为4.09×10~8m~3。

Impacts of underground mining on water resources of Kuye River

In order to quantitatively study the impacts of underground mining on the water resources of the Kuye River Basin, the Mann-Kendall-Pettitt method was used to detect the abrupt change point of the annual runoff over the period from 1966 to 2009. The impacts of underground mining on runoff of the Kuye River Basin over the period from 1997 to 2009 and groundwater in the year 2009 were quantitatively estimated using the SWAT and SWAT-VISUAL MODFLOW models. The results show that the sharp decrease in runoff and the depletion of groundwater during the study period are mainly attributed to underground mining, which is responsible for 24. 20 mm of annual runoff reduction, accounting for 64. 16% of the total reduction, and 4. 09×10⁸ m³ of the groundwater affected.