钻探工程2024，Vol.51Issue(6)：141-151,11.DOI:10.12143/j.ztgc.2024.06.018
考虑止水帷幕插入比的降水井滤管参数设计优化研究
Study on parameter design optimization for dewatering well screen considering waterproof curtain insertion ratio
帅红岩 1李光诚 1黄俊杰 2邓敏 1王建筱1
作者信息
- 1. 湖北省城市地质工程院,湖北 武汉 430050
- 2. 中国地质大学(武汉),湖北 武汉 430074
- 折叠
摘要
Abstract
Taking a foundation pit project in Wuhan as the background,based on two observation indicators of water level drop inside and outside the confined layer pit and surface settlement outside the pit,a three-dimensional numerical calculation model for group well precipitation was established using finite element software ABAQUS for numerical simulation analysis.By setting multiple calculation conditions,under the conditions of different insertion ratios of suspended waterproof curtains λ,the influence of different well screen lengths L and filter tube burial depth H on the water level drop inside and outside the confined layer pit and surface settlement outside the pit was studied.The research results indicate that the impact of the insertion ratio λ on the water leverl drops inside and outside the confined layer pit and the surface settlement outside the pit is much greater than that of the length L and burial depth H of the well screen in the dewatering well.When the λ is between 0.4 and 0.6,there is a large space to increase the water level drop inside the confined layer pit or decrease the water level drop outside the confined layer pit by changing the length L and the burial depth H.When λ exceeds 0.6,it has a good water blocking effect.The buried depth H of the well screen should be located at the top of the confined aquifer,and the length of the well screen L should not exceed 0.4 times the thickness of the confined aquifer M.关键词
悬挂式止水帷幕/插入比/降水井/滤管参数/数值模拟Key words
suspended waterproof curtain/insertion ratio/dewatering well/parameters of well screen/numerical simulation分类
建筑与水利引用本文复制引用
帅红岩,李光诚,黄俊杰,邓敏,王建筱..考虑止水帷幕插入比的降水井滤管参数设计优化研究[J].钻探工程,2024,51(6):141-151,11.
