摘要
针对北京市地铁丰益桥南站和丰益桥南站—终点区间施工降水回灌场地周边复杂环境,基于抽水试验、场地回灌试验、周边回灌试验等,从回灌池的深度、回灌井的深度、单井回灌水量、回灌井布置等方面设计了回灌系统。分别采用解析法和数值法检验了回灌系统方案的合理性,最终确定了以84眼小口径井和1眼大口井进行补充的回灌方案能满足施工降水排水需求。经实际运行显示,系统回灌总量7261×10^(4) m^(3),实现了地铁降水排水100%资源性回灌。
According to the complex environment around the construction precipitation recharge site at Fengyiqiao South Station and Fengyiqiao South Station-terminal section of Beijing Metro,the recharge system is designed from the aspects of recharge pool depth,recharge well depth,single well recharge amount and recharge well layout and based on the results of pumping test,site recharge test and peripheral recharge test.Analytical method and numerical method are used to test the rationality of the recharge system.Finally,it is determined that the recharge scheme supplemented by 84 wells and 1 large well can meet the demand of construction dewatering and drainage.The actual operation shows that the total recharge amount of the system is 7261×104 m3,with 100%resource recharge of subway precipitation and drainage realized.This enriches the engineering demonstration of precipitation recharge and is beneficial to protect the environment and save groundwater resources.It has great economic value and significance for Beijing,a big city with severe water shortage.
作者
许亮
欧志亮
郭高轩
沈媛媛
戚琦
南英华
芮小平
XU Liang;OU Zhiliang;GUO Gaoxuan;SHEN Yuanyuan;QI Qi;NAN Yinghua;RUI Xiaoping(Beijing Institute of Hydrogeology and Engineering Geology(Beijing Institute of Geo-Environment Monitoring),Beijing 100195,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《城市地质》
2021年第3期332-338,共7页
Urban Geology
基金
北京市自然科学基金(8172046)资助。
关键词
复杂环境
丰益桥
地铁降水
回灌系统
数值模拟
complicated environment
Fengyi Bridge Subway
subway dewatering
recharge system
