南京和燕路过江通道工程回灌试验分析

Analysis of the Reinjection Test of Heyan Road Crossing River Passage in Nanjing

南京临江河漫滩地区砂层较厚,渗透系数极大,需要进行专门回灌试验以确定相关回灌参数及回灌效果。试验证明,单井回灌量较大,回灌量可达26m^3/h,回灌对水位的抬升效果明显。根据抽灌一体化试验结果,回灌(2)5层时对于下部(2)6层的水位影响较大,建议选择回灌目的层为(2)5层。

Because of the thick sand layer and the great permeability coefficient in the floodplain area in Nanjing, reinjection tests are needed to determine the relevant reinjection parameters and the reinjection effect. The test proves that the reinjection amount of single well is large, the reinjection rate can reach 26 m3/h, and the effect of reinjection on water level rise is obvious. According to the test results, the target layer of reinjection should be(2)5 layers.