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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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。
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.
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.
引文
[1]叶为民,万敏,陈宝,等.深基坑承压含水层降水对地面沉降的影响[J].地下空间与工程学报,2009,5(增刊2):1799-1805.
[2]骆祖江,张月萍,刘金宝.深基坑降水与地面沉降控制研究[J].沈阳建筑大学学报:自然科学版,2007,23(1):47-51.
[3]王建秀,吴林高,朱雁飞,等.地铁车站深基坑降水诱发沉降机制及计算方法[J].岩石力学与工程学报,2009,28(5):1010-1019.
[4]陆建生,潘伟强,沈池,等.深基坑承压水抽灌一体化设计及工程应用[J].施工技术,2014,43(1):48-52.
[5]龚士良,叶为民,陈洪胜,等.上海市深基坑工程地面沉降评估理论与方法[J].中国地质灾害与防治学报,2008,19(4):55-60.
[6]杨天亮,严学新,王寒梅,等.基坑施工引发的工程性地面沉降研究[J].上海地质,2009(2):15-21.
[7]严学新,王寒梅,方正,等.上海市工程建设规范《地面沉降监测与防治技术规程》解析[J].上海地质,2009(2):11-14.
[8]吴建中,王寒梅,杨天亮.浅层地下水人工回灌应用于上海市工程性地面沉降防治的试验研究[J].现代地质,2009,23(6):1194-1200.
[9]杨天亮,严学新,王寒梅,等.水位与沉降双控模式下浅层地下水压力回灌试验研究[J].上海地质,2010,31(4):12-17.
[10]杨天亮.深基坑减压降水引发的地面沉降效应分析[J].上海国土资源,2012,33(3):41-44.
[11]占光辉,何晔,黄鑫磊.上海地铁车站深基坑工程地面沉降防治实例分析[J].上海国土资源,2013,34(2):68-70.
[12]杨天亮,王寒梅,焦珣.上海地面沉降防治分区管控方法研究[J].上海国土资源,2014,35(4):105-109.
[13]黄鑫磊,何晔,占光辉.深基坑减压降水设计优化与止水帷幕隔水效应分析[J].上海国土资源,2014,35(2):25-27,61.
[14]占光辉,黄鑫磊,何晔.基于孔隙水压力变化的深基坑减压降水地面沉降特征分析[J].地质学刊,2014,38(增刊1):287-292.
[15] Yang T L,Yan X X,Wang H M,et al. Comprehensive experimen-tal study on prevention of land subsidence caused by dewatering indeep foundation pit with hanging waterproof curtain[J]. ProcIAHS,2015,372:1-5.
[16]何晔,黄鑫磊,占光辉.基于现场试验研究的浅层地下水人工回灌影响因素分析[J].上海国土资源,2015,36(3):75-77,82.
[17]黄鑫磊,占光辉,杨天亮.上海地区基坑减压降水地面沉降特征与防控措施初探[C]//第十三届华东六省一市地学科技论坛文集.南昌:江西省地质学会,2015:351-355.
[18]杨天亮.深基坑减压降水地面沉降控制综合分区方法研究[J].上海国土资源,2018,39(2):64-69,74.
[19]王寒梅,焦珣.海平面上升影响下的上海地面沉降防治策略[J].气候变化研究进展,2015,11(4):256-262.
[20]杨天亮,黄鑫磊.上海深层地下空间开发中的重大地质问题及分层研究[J].上海建设科技,2016(增刊1):26-29.
[2]骆祖江,张月萍,刘金宝.深基坑降水与地面沉降控制研究[J].沈阳建筑大学学报:自然科学版,2007,23(1):47-51.
[3]王建秀,吴林高,朱雁飞,等.地铁车站深基坑降水诱发沉降机制及计算方法[J].岩石力学与工程学报,2009,28(5):1010-1019.
[4]陆建生,潘伟强,沈池,等.深基坑承压水抽灌一体化设计及工程应用[J].施工技术,2014,43(1):48-52.
[5]龚士良,叶为民,陈洪胜,等.上海市深基坑工程地面沉降评估理论与方法[J].中国地质灾害与防治学报,2008,19(4):55-60.
[6]杨天亮,严学新,王寒梅,等.基坑施工引发的工程性地面沉降研究[J].上海地质,2009(2):15-21.
[7]严学新,王寒梅,方正,等.上海市工程建设规范《地面沉降监测与防治技术规程》解析[J].上海地质,2009(2):11-14.
[8]吴建中,王寒梅,杨天亮.浅层地下水人工回灌应用于上海市工程性地面沉降防治的试验研究[J].现代地质,2009,23(6):1194-1200.
[9]杨天亮,严学新,王寒梅,等.水位与沉降双控模式下浅层地下水压力回灌试验研究[J].上海地质,2010,31(4):12-17.
[10]杨天亮.深基坑减压降水引发的地面沉降效应分析[J].上海国土资源,2012,33(3):41-44.
[11]占光辉,何晔,黄鑫磊.上海地铁车站深基坑工程地面沉降防治实例分析[J].上海国土资源,2013,34(2):68-70.
[12]杨天亮,王寒梅,焦珣.上海地面沉降防治分区管控方法研究[J].上海国土资源,2014,35(4):105-109.
[13]黄鑫磊,何晔,占光辉.深基坑减压降水设计优化与止水帷幕隔水效应分析[J].上海国土资源,2014,35(2):25-27,61.
[14]占光辉,黄鑫磊,何晔.基于孔隙水压力变化的深基坑减压降水地面沉降特征分析[J].地质学刊,2014,38(增刊1):287-292.
[15] Yang T L,Yan X X,Wang H M,et al. Comprehensive experimen-tal study on prevention of land subsidence caused by dewatering indeep foundation pit with hanging waterproof curtain[J]. ProcIAHS,2015,372:1-5.
[16]何晔,黄鑫磊,占光辉.基于现场试验研究的浅层地下水人工回灌影响因素分析[J].上海国土资源,2015,36(3):75-77,82.
[17]黄鑫磊,占光辉,杨天亮.上海地区基坑减压降水地面沉降特征与防控措施初探[C]//第十三届华东六省一市地学科技论坛文集.南昌:江西省地质学会,2015:351-355.
[18]杨天亮.深基坑减压降水地面沉降控制综合分区方法研究[J].上海国土资源,2018,39(2):64-69,74.
[19]王寒梅,焦珣.海平面上升影响下的上海地面沉降防治策略[J].气候变化研究进展,2015,11(4):256-262.
[20]杨天亮,黄鑫磊.上海深层地下空间开发中的重大地质问题及分层研究[J].上海建设科技,2016(增刊1):26-29.