摘要
江苏残疾人康复中心项目基坑涌水事故是因前期降水方案设计和降水施工质量控制不到位而导致,事故处理过程中通过对项目所在地地层资料深入分析,该地区为典型的长江漫滩二元地质结构,主要含水层为巨厚砂层,充分考虑该地区含水层厚、渗透系数大的特点,合理布置降水井数量及深度。对基坑内已施工的不合格降水井作报废处理、严控施工质量和运行管理,成功地解决了基坑涌水事故。本文详述了该项目事故发生和解决过程,为类似工程提供有益经验。
The foundation pit flooding accident of the Jiangsu Disability Rehabilitation Center project was caused by the improper previous dewatering plan design and quality control of dewatering construction.In-depth analysis of the stratum data about the project location during the accident handling process showed that this area is a typical dual geological structure of the Yangtze River floodplain where the main aquifer is the thick sand layer.With fully consideration of the characteristics of the aquifer such as great thickness and large permeability coefficient in this area,the number and depth of dewatering wells was properly planned.Through abandonment of unqualified dewatering wells,and strict control of the construction quality and operation management,the water flooding accident at the foundation pit was successfully resolved.This article details the accident history and treatment process so as to provide useful experience for similar projects.
作者
刘静
吉泳安
LIU Jing;JI Yongan(The First Institute of Hydrological and Engineering Geological Prospecting, Anhui Geological Prospecting Bureau, Bengbu Anhui 233000, China;Anhui Hydrogeology Engineering Geology Company, Bengbu Anhui 233000, China;Nanjing Darcy Geotechnical Engineering Co., Ltd., Nanjing Jiangsu 210019, China)
出处
《探矿工程（岩土钻掘工程）》
2020年第6期79-85,共7页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
深基坑
管井降水
涌水事故
降水设计
deep foundation pit
pipe well dewatering
water flooding accident
dewatering design
