叶城县县城供水扩建工程地下取水论证与影响分析

Demonstration and Impact Analysis of Underground Water Intake for Water Supply Expansion Project in Yecheng County

介绍了叶城县县城供水扩建工程取水方案,以水源地所在的水文地质单元为分析范围,通过调查区内的地形、地貌特征,地层岩性及含水层空间分布与贮存条件,分析研究地下水的补给、径流、排泄条件,采用现场抽水试验计算探讨了地表水入渗给量和廊道出水量,用开采系数法和水平集水建筑物涌水量计算法计算可开采量,并对水质和取水影响进行了分析,阐述选取水源的合理性和取水的可行性,为工程顺利实施提供了科学支撑。

This paper introduced the water intake plan of the water supply expansion project in Yecheng County.Taking the hydrogeological unit where the water source was located as the scope of analysis,based on the investigation of the topography,landform characteristics,stratum lithology and aquifer spatial distribution and storage conditions in the area,this paper analyzed and studied the groundwater replenishment,runoff and drainage conditions,calculated and discussed the infiltration rate of surface water and the amount of water discharged from the corridor by using field pumping experiments,calculated the extractable amount by using the extraction coefficient method and the calculation method of water inflow from horizontal catchment buildings,analyzed the water quality and the impact of water intake,and explained the rationality of water source selection and the feasibility of water intake,which provided scientific support for the smooth implementation of the project.