神木县马镇渗流井抽水试验分析

Pumping test analysis of seepage well in Mazhen town,Shenmu county

为获得渗流井优化设计的理论基础,寻求技术经济合理的渗流井取水方案,以神木县马镇S3号渗流井为例,设计了5个落程的定流量抽水试验。结果表明,抽水试验初期,涌水量较小,涌水量主要来自于渗流井及其所在含水层,河流渗漏补给水量较少,水位能在较短的时间内达到稳定状态,而随着抽水量的增大,渗流井及其所在含水层出水量逐渐减少,河流渗漏补给量逐渐增加,水位达到稳定状态所需的时间逐渐变长;涌水量-降深曲线符合传统抽水试验结论,涌水量可达19267.2 m^(3)/d。

In order to obtain the theoretical basis for the design optimization of seepage well,and seek for economic and reasonable water intaking scheme of seepage well.Take S3 seepage well in Mazhen town of Shenmu county as an example,a pumping test of 5 fall was carried out.The results show that the quantity of pumping water is small at the initial stage of pumping test,mainly from the seepage well and its aquifer,river leakage is less,and the water level can reach a stable state in a relatively short period of time.With the increasing quantity of pumping,the yield of seepage well and its aquifer decreased gradually,the river leakage increased gradually,and the time required to reach steady state became relatively long.The water inflowlanding curve is in line with the traditional pumping test results,and the water inflow can reach to 19267.2 m^(3)/d.