Combined recharge: A method to prevent ground settlement induced by redevelopment of recharge wells
Combined recharge: A method to prevent ground settlement induced by redevelopment of recharge wells
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DOI：
10.1016/j.jhydrol.2018.10.051
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发表时间：
2019-01
影响因子：
6.4
通讯作者：
Chaofeng Zeng;G. Zheng;Xiu-li Xue;G. Mei
中科院分区：
文献类型：
--
作者：
Chaofeng Zeng;G. Zheng;Xiu-li Xue;G. Mei
人工回灌是减少深基坑降水引起的地表沉降的有效方法。为了确保长期补给的成功，有必要重新开发补给威尔斯井（即，泵送）以防止井堵塞。现场测量表明，在井的再开发过程中会发生地面沉降。提出了一种消除井深回灌沉降的方法--联合回灌法。在该方法中，在传统回灌威尔斯（PR威尔斯）的一侧增加一排回灌威尔斯（AR井），以补偿由于PR井再开发而造成的水量损失。进行了两个现场试验（有和没有使用组合回灌），以调查地面响应回灌和再开发。试验结果表明，在不联合回灌的情况下，建筑物沉降量在重建过程中会逐渐增大。然而，有没有重大的表面沉降过程中，再开发的情况下，与联合补给。
Artificial recharge is an effective way to minimize dewatering-induced ground settlements in deep excavation. To ensure the success of a long-term recharge, it is necessary to redevelop recharge wells (i.e., pumping) periodically to prevent well clogging. Field measurements show that ground settlements will occur during the well redevelopment. This paper proposed a method referred to as the combined recharge to eliminate settlement during well redevelopment. In the proposed method, a row of recharge wells (AR well) is added at the side of the traditional recharge wells (PR wells) to compensate water loss due to PR well redevelopment. Two field tests (with and without use of combined recharge) are conducted to investigate the ground response to recharge and redevelopment. Test results show that building settlements will increase progressively during redevelopment for case without combined recharge. However, there are no significant surface settlements during redevelopment for the case with combined recharge.