Theory of artesian well flow in ancient river in Wuhan and its application in foundation pit dewatering

被引：0

作者：

Lü B.-Q. ^{[1
]}

Feng X.-L. ^{[1
]}

Xiong Z.-H. ^{[2
]}

机构：

[1] Department of Engineering, China University of Geosciences, Wuhan

[2] Wuhan FengDa Geological Engineering Ltd, Wuhan

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2020年 / 42卷 / 03期

关键词：

Ancient river; Artesian water; Completely penetrating well; Foundation pit dewatering; Steady flow; Well flow;

D O I：

10.11779/CJGE202003015

中图分类号：

学科分类号：

摘要：

Based on the analysis of the special hydrogeological conditions of an ancient river in Wuhan, a hydrogeological model for the ancient river is established. The problem of artesian well flow in the ancient river is generalized to that of groundwater movement to pumping wells in belt-like artesian aquifers. Then, based on the principle of mirror method and the potential function, the formulas of steady flow for artesian and artesian-unartesian completely penetrating wells in the ancient river are derived. On this basis, it is applied to the foundation pit dewatering project, and a method for calculating the water inflow of the foundation pit of artesian aquifers in the ancient river is put forward. Finally, taking the deep foundation pit of the underground parking lot of Liyuan Plaza in Wuhan as an example, the calculated results are compared with those of the traditional methods and the actual monitoring data. The results show that the relative error between the calculated results and the actual water inflow of the foundation pit is only 7.4%, while the relative error of the traditional method is 54.5%, which verifies the rationality of the proposed method. The research results are of great significance for understanding the theory of artesian well flow in ancient rivers and for guiding the design of foundation pit dewatering projects. © 2020, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：533 / 541

页数：8

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