承压含水层野外弥散试验实施方法研究——以吉林某水源地为例

Study on Implementation Method of Field Dispersion Test for Confined Aquifer——Taking a Water Source Area in Jilin as an Example

以吉林某水源地评价研究为基础,通过栓塞止水、单向阀止回及孔口压力注入等方式进行示踪剂投放,有效地解决了承压含水层弥散试验示踪剂投放难题,并通过实时监测的方式达到了数据的高密度监测,从源头上提高了试验成功率以及数据精度。通过人工流场和天然流场,利用改进直线法和二元线性回归方程法,分别对承压含水层不同水力梯度下的弥散参数进行求解,很好地解决了水源地承压含水层弥散系数求取问题,为承压含水层弥散试验的现场实施提供了成功经验。

Based on the evaluation of a groundwater sources in Jilin Province, water stopping by embolization, one-way valve check and orifice pressure injection, the problem of tracer placed into the confined aquifer dispersion test is effectively solved, and the high-density monitoring of data is achieved by real-time monitoring, which improves the success rate and data accuracy of the dispersion test of confined aquifer from the source. Through artificial flow field and natural flow field, using improved line method and binary linear regression equation method, the dispersion parameters of confined aquifer under different hydraulic gradients are solved respectively, which solves the problem of calculating the dispersion coefficient of confined aquifer well and provides the successful experience for field implementation of the dispersion test of confined aquifer.