神木县合河水源地渗流井取水效果对比分析

Comparison and analysis of water-intaking effect of seepage well in Hehe water source area of Shenmu county

为了研究陕西省神木县黄河谷地合河漫滩区渗流井取水效果,通过建立研究区的地下水流三维数值模型,分别模拟计算了黄河平、枯水期渗流井的出水量及其组成,对渗流井在单、群井作用下,与相同开采技术条件下的廊道及辐射井模型模拟结果进行了对比,表明渗流井取水结构的出水量大,供水保证率高,并且在建议开采量下含水层的水位降在允许范闻内。建议渗流井总开采量为:平水期35 200 m3/d,枯水期27 400 m3/d。

Based on the analysis of hydrogeological conditions in Hehe of Shenmu County,Yulin,Shanxi,a numerical model was developed to simulate the allowable yield of seepage well in the exploitation conditions.When seepage wells are used to exploit water resources the inter-well interference is relatively smal1.Through the analysis of the simulation results of three different water-supplying projects（seepage well,galleries and radial well）,a conclusion was made that the seepage well had many advantages compared to radial wells or galleries in the study area,such as the lager reasonable yield,the higher assuring rate and the much less influence on local hydrogeological conditions.The paper work out the allowable water-supply： in median water period,the allowable water-supply is 35200 m3/d;and in the dry period,the allowable water-supply is 27400 m3/d.