Application of analytical methods to determination of the exploitation scheme of a wellfield at riverside
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摘要: 合理设计开采方案对傍河水源地地下水资源开发具有重要意义。以德惠典型傍河地下水水源地为研究区，在查明研究区水文地质条件的基础上，以管井为例，运用解析法确定了最佳开采方案和水源地地下水允许开采量，并对最佳开采方案的合理性和可靠性进行了分析。结果表明，当开采井沿河流呈直线形单排布井方式，井数为12眼，井河距离为200 m，井间距离为150 m，单井开采量为2 960 m3/d，总开采量为35 520 m3/d时，取水保证程度较高，面对河流突发性污染具有一定的抵御能力，不会对区域水环境和其他用户造成较大影响。Abstract: Rational design of exploitation schemes is of great significance to the development of groundwater resources along a river. The study area is located in Dehui, which is a typical region along a river. Based on the survey of hydrogeological conditions in the study area, analytic methods are used to determine the optimal exploitation scheme and the allowable groundwater yield by the tube wells. The rationality and reliability of the optimal exploitation scheme are also analyzed. The results show that 12 pumping wells is in a straight line along the river with the distance between wells of 150 m. The distance between the wells and the river is 200 m. The pumping rate of a single well is 2 960 m3/d, while the total amount of groundwater exploitation is 35 520 m3/d. The exploitation scheme not only has higher water supply reliability, but also has a certain ability to withstand the sudden pollution of river. Meanwhile, this scheme will not cause great impact on the regional water environment and other users.
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Key words:
- groundwater /
- well field /
- analytical method /
- exploitation scheme /
- allowable groundwater yield
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