第39第1期 2017年2月
土木建筑与环境工程
Journal of Civil,Architectural &. Environmental Engineering
doi:10.11835/j.issn. 1674-4764. 2017.01. 015
对称式基坑渗流涌水量的计算方法
曹净1.张丙军1.2，刘海明
（1.昆明理工大学土木工程学院，昆明650500；
2.潍坊市建筑设计研究院有限责任公司，山东潍坊261041)
Vol. 39 No. 1 Feb.2017
回点
摘要：随着地铁、越江隧道等地下工程的日益增多，涌现出了大量的对称式基坑。基于共形映射理论，推导了对称式基坑涌水量计算表达式，并对其计算参数进行分析。研究表明，对称式基坑的单宽涌水量与渗透系数、基坑内外水头差成正比，与(相对)隔水层层顶到坑底的距离和基坑两侧止水惟幕间距的比值、止水惟幕嵌固深度和(相对)隔水层层顶到坑底距离的比值、基坑内外水头差和
(相对)隔水层层顶到坑底距离的比值成反相关。关键词：对称式基坑：共形映射：渗流：涌水量
中图分类号：TU46.3
文献标志码：A
文章编号：1674-4764(2017)01-0106-06
Calculation Method of seepage discharge for symmetric foundation pits
Cao Jing',Zhang Bingjun1.2, Liu Haiming
(1. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500.
P. R. China; 2.Weifang Architectural Design &. Research Institute Co. , LTD. Weifang 261041, Shandong, P. R. China) Abstract: In recent years, with the development of crossing-river tunnels and subways, there are more and more symmetric foundation pits. Based on conformal mapping, the mathematical modeling is built and the ess seepage discharge are analyzed. The results showed that the seepage discharge of symmetric foundation pit has direct ratio with permeability coefficient and the water head between the outside and inside of foundation pit. And the seepage discharge of symmetric foundation pit is in inverse correlation to the ratio of the distance between the top of relative impermeable layer to the bottom of foundation pit and the distance between pensile curtains, to the ratio of the embedded depth of pensile curtain and the distance between the top of relative impermeable layer to the bottom of foundation pit, and to the ratio of water head between the outside and inside of foundation pit and the distance between the top of relative impermeable layer to the bottom of foundation pit.
Keywords:symmetric foundation pit; conformal mapping; seepage: discharge
随着中国城市基础建设的快速发展，地下空间的开发利用正成为各大城市的新热点，随之涌现出
收稿日期：2016-07-12
基金项目：国家自然科学基金（51304088）
大量的深基坑。在基坑施工过程中常常因地下水的存在会引起一系列的问题，其中基坑的涌水量成为
作者简介：曹净（1966-），男，博士，教授，主要从事岩土工程研究，（E-mail）cjlb117@sina.com Received:2016-07-12
Foundation item:National Natural Science Foundation of China （( No.51304088）
Author brief:Cao Jing (1966-),PhD, Professor, main research interest: environmental geotechnical engineering,(E-mail)
cjlb117@sina.com.