| 滨海地区深基坑减压降水地面沉降研究成果及应用——以上海市为例 |
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| 作者姓名： | 严学新 王寒梅 杨天亮 黄鑫磊 占光辉 何晔 |
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| 作者单位： | 1.国土资源部地面沉降监测与防治重点实验室,上海 200072; 2.上海市地质调查研究院,上海 200072; 3.上海地面沉降控制工程技术研究中心,上海 200072 |
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| 基金项目： | 国际地球科学计划“沿海城市地面沉降的影响因素、机理与监测(编号: IGCP 663)”、国土资源部公益性行业科研专项经费“滨海地区工程建设引发地面沉降机理及控制措施研究(编号: 201311045)”和上海市科学技术委员会科研计划“深基坑降排水地面沉降机理与控制关键技术研究、基础设施建设与运营中的地下地质安全控制技术(编号: 12231200700、18DZ1201100)”联合资助 |
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| 摘 要： | 针对地下空间开发中深基坑减压降水地面沉降发育特征、沉降机制及防治对策等研究进展,以上海市为例,总结了近年来滨海地区深基坑减压降水地面沉降研究取得的主要成果。建立了深基坑减压降水地面沉降防治综合分区方法,探索了深基坑减压降水地面沉降防治原型试验设计方法,掌握了上海市浅部承压含水层深基坑减压降水地面沉降规律,提出了深基坑减压降水地面沉降-地下水位双控模式及控制指标,提出了深基坑减压降水地面沉降防治措施,构建了深基坑减压降水地面沉降管控体系。这些研究成果在特大型城市安全管理、重大市政工程建设及运营服务中得到应用,对同类地区地面沉降研究和防治工作具有借鉴意义。
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| 关 键 词： | 滨海地区 深基坑降水 地面沉降 管控体系 |
| 收稿时间： | 2018-08-21 |
Major achievements of land subsidence caused by deep foundation pits dewatering in coastal areas and their applications: A case study of Shanghai |
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| Authors: | YAN Xuexin WANG Hanmei YANG Tianliang HUANG Xinlei ZHAN Guanghui HE Ye |
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| Institution: | 1. Key Laboratory of Land Subsidence Monitoring and Prevention, Ministry of Land and Resources, Shanghai 200072, China; 2. Shanghai Institute of Geological Survey, Shanghai 200072, China; 3. Shanghai Engineering Research Center of Land Subsidence, Shanghai 200072, China |
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| Abstract: | With the rapid expansion of urban construction, especially the increasing of scale, density and depth of exploitation of underground space, uneven subsidence has occurred in Shanghai, a typical thick Quaternary covering area in coastal areas. Taking Shanghai as an example, the authors have studied the characteristics, mechanisms, and control strategies of land subsidence induced by deep foundation pits dewatering, and summarized the major achievements in recent years. The partition method has been proposed to prevent land subsidence caused by deep foundation pits dewatering. The way of test design, based on in-situ experiments, has been explored to prevent land subsidence induced by deep foundation pits dewatering. The laws of land subsidence caused by deep foundation pits dewatering have been summarized in shallow confined aquifer of Shanghai. Besides, the dual-control model, including the dewatering and groundwater, and the control indexes were proposed. Some preventive measures have been summarized and the control system has been established. The results have been applied in safety management, major municipal engineering construction and operation in major cities, which could provide some reference for other similar areas. |
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| Keywords: | coastal areas deep foundation pits dewatering land subsidence control system |
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