排污管道地下水入渗的解析模型研究

Analytical Models for Groundwater Infiltration Assessment into Sewer Systems

我国东南沿海地区,地下水位较高,排污管道的地下水入渗问题较为严重。而传统的入渗量评估方法如水量平衡法评估精度差,评估成本高;通过对管道破损口周围渗流场的理论分析,提出了地下水入渗量评估的解析模型方法,并给出了适用于径向破损口的二维入渗量数值模型以及适用于孔洞形破损口的三维解析模型;通过开展室内模型试验,验证了解析模型的可靠性。

In the southeast coastal area of China,the groundwater level is high,and the problem of groundwater infiltration of sewage pipeline is serious.However,the traditional methods such as water balance method have poor accuracy and high cost.Based on the theoretical analysis of the seepage field around the damaged mouth of the pipeline,the analytical model method of groundwater infiltration evaluation is proposed,and the two-dimensional infiltration numerical model suitable for the radial damaged mouth and the three-dimensional analytical model suitable for the hole shaped damaged mouth are given.The reliability of the analytical model is verified by the indoor model test.