管井降水技术在深基坑涌水事故处理中的应用与启示
投稿时间:2020-04-07  修订日期:2020-05-22  点此下载全文
引用本文:刘 静,吉泳安.管井降水技术在深基坑涌水事故处理中的应用与启示[J].探矿工程(岩土钻掘工程),2020,47(6):79-85.
LIU Jing,JI Yongan. Tube well dewatering technology for the treatment of the deep foundation pit water flooding accident[J]. Exploration Engineering (Rock & Soil Drilling and Tunneling), 2020,47(6):79-85.
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作者单位E-mail
刘 静 安徽省地矿局第一水文工程地质勘查院安徽 蚌埠 233000 271054689@qq.com 
吉泳安 南京达西岩土工程有限公司江苏 南京 210019  
中文摘要: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。
中文关键词:深基坑  管井降水  涌水事故  降水设计
 
Tube well dewatering technology for the treatment of the deep foundation pit water flooding accident
Abstract: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.
keywords:deep foundation pit  pipe well dewatering  water flooding accident  dewatering design
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