江苏沿海地区地面沉降约束下的地下水可采资源量评价
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摘要
地面沉降是制约江苏沿海地区发展最主要的地质环境问题.基于水文地质条件和土体力学特征综合分析,深入研究区域地面沉降特征和机理,建立区域尺度的地下水-地面沉降耦合模型.基于耦合模型,设置符合区域地面沉降发展规划的约束条件,推算沿海各县市地面沉降约束下的地下水可采资源量.结果表明,在2020年沉降中心的沉降速率控制在15 mm·a~(-1),其他地区控制在10 mm·a~(-1)以内的约束条件下,沿海地区深层地下水可开采资源量达1.33×10~8 m~3·a~(-1).研究成果为地方制定科学合理的地下水配置方案提供科学依据.
Land subsidence is the most severe geological disaster in Jiangsu coastal areas. Based on the comprehensive analysis of hydrogeological conditions and soil mechanic characteristics,this paper studies the characteristics and mechanism of regional land subsidence and establishes a groundwater-land subsidence coupling model at regional scale. Based on the model,the constraints are set in accordance with the regional land subsidence developing plan,and the groundwater recoverable resources under the constraints of land subsidence in coastal counties and cities are estimated. The results show that in 2020,the sedimentation rate of the subsidence center is controlled to 15 mm·a~(-1),and in other areas under the constraint of 10 mm·a~(-1),the exploitation of deep groundwater in coastal areas reaches 133 million m~3·a~(-1). The research results provide a scientific basis for local governments to formulate scientific and rational groundwater allocation plans.
Land subsidence is the most severe geological disaster in Jiangsu coastal areas. Based on the comprehensive analysis of hydrogeological conditions and soil mechanic characteristics,this paper studies the characteristics and mechanism of regional land subsidence and establishes a groundwater-land subsidence coupling model at regional scale. Based on the model,the constraints are set in accordance with the regional land subsidence developing plan,and the groundwater recoverable resources under the constraints of land subsidence in coastal counties and cities are estimated. The results show that in 2020,the sedimentation rate of the subsidence center is controlled to 15 mm·a~(-1),and in other areas under the constraint of 10 mm·a~(-1),the exploitation of deep groundwater in coastal areas reaches 133 million m~3·a~(-1). The research results provide a scientific basis for local governments to formulate scientific and rational groundwater allocation plans.
引文
[1] 朱锦旗,于军,龚绪龙等.江苏沿海地区地下水系统与地下水资源调查评价报告.江苏省地质调查研究院,2018.(Zhu J Q,Yu J,Gong X L,et al.Investigation and evaluation report on groundwater system and groundwater resources in coastal areas of Jiangsu province.Geological Survey of Jiangsu Province,2018.)
[2] 叶淑君,薛禹群,吴吉春等.基于修正麦钦特模型的地面沉降模拟:以上海为例.南京大学学报(自然科学),2011,47(3):291-298.(Ye S J,Xue Y Q,Wu J C,et al.Land subsidence modeling based on the modified Merchant model:A case study of Shanghai.Journal of Nanjing University(Natural Sciences),2011,47(3):291-298.)
[3] 薛禹群,吴吉春,张云等.长江三角洲(南部)区域地面沉降模拟研究.中国科学:D 辑,2008,38(4):477-492.
[4] Helm D C.One-dimensional simulation of aquifer system compaction near Pixley,California:1.Constant parameters.Water Resources Research,1975,11(3):465-478.
[5] Helm D C.One-dimensional simulation of aquifer system compaction near Pixley,California:2.Stress-Dependent Parameters.Water Resources Research,1976,12(3):375-391.
[6] Leake S A,Galloway D L.Use of the SUB-WT Package for MODFLOW to simulate aquifer-system compaction in Antelope Valley,California,USA ∥ Carreon-Freyre D,Cerca M,Callongn D L.Land subsidence,associated hazards and the role of natural resources development:Proceeding.Santiago de Queretaro,Mexico:IAHS Publication,2010,39:61-67.
[7] 贺小桐.南通地下水流、地面沉降与淡水咸化耦合数值模拟研究.硕士学位论文.南京:南京大学,2016.(He X T.Study on the Coupled numerical simulation of groundwater flow,Land Subsidence and freshwater salinisation in Nantong Area.Master Dissertation.Nanjing:Nanjing University,2016.)
[8] 骆祖江,曾峰,李颖.地下水开采与地面沉降控制三维全耦合模型研究.吉林大学学报(地学版),2009,39(6):1080-1086.(Luo Z J,Zeng F,Li Y.Study on three-dimensional full coupling model of groundwater exploitation and land-subsidence control.Journal of Jilin University(Earth Science Edition),2009,39(6):1080-1086.)
[9] 林政伟,黄煌辉,曾钧敏等.黏弹塑性地层下陷模式之建立与应用.上海国土资源,2014,35(4):25-30.(Lin Z W,Huang H H,Zeng J M,et al.Development and application of the viscoelastic-plastic land subsidence model.Shanghai Land &Resource,2014,35(4):25-30.)
[10] Shi X Q,Xue Y Q,Ye S J,et al.Characterization of land subsidence induced by groundwater withdrawals in Su-Xi-Chang area,China.Environmental Geology,2007,52:27-40.
[11] Ferronato M,Castelletto N,Gambolati G.A fully coupled 3-D mixed finite element model of Biot consolidation.Journal of Computational Physics,2010,229(12):4813-4830.
[12] Gambolati G,Teatini P,Daú D,et al.Importance of poroelastic coupling in dynamically active aquifers of the Po River basin,Italy.Water Resource Research,2000,36(9):2443-2459.
[13] 叶淑君.区域地面沉降模型的研究与应用.博士学位论文.南京:南京大学,2004.(Ye S J.Study on the regional land subsidence model and its application.Ph.D.Dissertation.Nanjing:Nanjing University,2004.)
[14] 薛禹群.论地下水超采与地面沉降.地下水,2012,34(6):1-5.(Xue Y Q.Discussion on Groundwater Overexploitation and land subsidence.Groundwater,2012,34(6):1-5.)
[15] 于军,吴吉春,叶淑君等.苏锡常地区非线性地面沉降耦合模型研究.水文地质工程地质,2007,34(5):11-16.(Yu J,Wu J C,Ye S J,et al.Research on nonlinear coupled modeling of land subsidence in Suzhou,Wuxi and Changzhou areas,China.Hydrogeology and Engineering Geology,2007,34(5):11-16.)
[16] 施小清,冯志祥,姚炳奎等.苏锡常地区深层地下水禁采后土层变形特征分析.第四纪研究,2014,34(5):1062-1071.(Shi X Q,Feng Z X,Yao B K,et al.Study on the deformation characteristics of soil layers after banning groundwater pumping in Su-Xi-Chang area.Quaternary Sciences,2014,34(5):1062-1071.)
[17] 张云,薛禹群,吴吉春等.抽灌水条件下上海砂土层的变形特征和变形参数.水利学报,2006,37(5):560-566.(Zhang Y,Xue Y Q,Wu J C,et al.Characteristics and parameters of sandstrata deformation dueto groundwater pumping in Shanghai.Journal of Hydraulic Engineering,2006,37(5):560-566.)
[18] 王晓梅,于军,姚炳魁等.盐城市地下水资源评价报告.江苏省地质调查研究院,2004.(Wang X M,Yu J,Yao B K,et al.The evaluation of groundwater resource in Yancheng.Geological Survey of Jiangsu Province,2004.)
[19] 施春华,杨仪,刘剑等.南通市地下水资源评价报告.江苏省地质工程勘察院,2008.(Shi C H,Yang Y,Liu J,et al.The evaluation of groundwater resource in Nantong.Geo-engineering Investigation Institute of Jiangsu Province,2008.)
[2] 叶淑君,薛禹群,吴吉春等.基于修正麦钦特模型的地面沉降模拟:以上海为例.南京大学学报(自然科学),2011,47(3):291-298.(Ye S J,Xue Y Q,Wu J C,et al.Land subsidence modeling based on the modified Merchant model:A case study of Shanghai.Journal of Nanjing University(Natural Sciences),2011,47(3):291-298.)
[3] 薛禹群,吴吉春,张云等.长江三角洲(南部)区域地面沉降模拟研究.中国科学:D 辑,2008,38(4):477-492.
[4] Helm D C.One-dimensional simulation of aquifer system compaction near Pixley,California:1.Constant parameters.Water Resources Research,1975,11(3):465-478.
[5] Helm D C.One-dimensional simulation of aquifer system compaction near Pixley,California:2.Stress-Dependent Parameters.Water Resources Research,1976,12(3):375-391.
[6] Leake S A,Galloway D L.Use of the SUB-WT Package for MODFLOW to simulate aquifer-system compaction in Antelope Valley,California,USA ∥ Carreon-Freyre D,Cerca M,Callongn D L.Land subsidence,associated hazards and the role of natural resources development:Proceeding.Santiago de Queretaro,Mexico:IAHS Publication,2010,39:61-67.
[7] 贺小桐.南通地下水流、地面沉降与淡水咸化耦合数值模拟研究.硕士学位论文.南京:南京大学,2016.(He X T.Study on the Coupled numerical simulation of groundwater flow,Land Subsidence and freshwater salinisation in Nantong Area.Master Dissertation.Nanjing:Nanjing University,2016.)
[8] 骆祖江,曾峰,李颖.地下水开采与地面沉降控制三维全耦合模型研究.吉林大学学报(地学版),2009,39(6):1080-1086.(Luo Z J,Zeng F,Li Y.Study on three-dimensional full coupling model of groundwater exploitation and land-subsidence control.Journal of Jilin University(Earth Science Edition),2009,39(6):1080-1086.)
[9] 林政伟,黄煌辉,曾钧敏等.黏弹塑性地层下陷模式之建立与应用.上海国土资源,2014,35(4):25-30.(Lin Z W,Huang H H,Zeng J M,et al.Development and application of the viscoelastic-plastic land subsidence model.Shanghai Land &Resource,2014,35(4):25-30.)
[10] Shi X Q,Xue Y Q,Ye S J,et al.Characterization of land subsidence induced by groundwater withdrawals in Su-Xi-Chang area,China.Environmental Geology,2007,52:27-40.
[11] Ferronato M,Castelletto N,Gambolati G.A fully coupled 3-D mixed finite element model of Biot consolidation.Journal of Computational Physics,2010,229(12):4813-4830.
[12] Gambolati G,Teatini P,Daú D,et al.Importance of poroelastic coupling in dynamically active aquifers of the Po River basin,Italy.Water Resource Research,2000,36(9):2443-2459.
[13] 叶淑君.区域地面沉降模型的研究与应用.博士学位论文.南京:南京大学,2004.(Ye S J.Study on the regional land subsidence model and its application.Ph.D.Dissertation.Nanjing:Nanjing University,2004.)
[14] 薛禹群.论地下水超采与地面沉降.地下水,2012,34(6):1-5.(Xue Y Q.Discussion on Groundwater Overexploitation and land subsidence.Groundwater,2012,34(6):1-5.)
[15] 于军,吴吉春,叶淑君等.苏锡常地区非线性地面沉降耦合模型研究.水文地质工程地质,2007,34(5):11-16.(Yu J,Wu J C,Ye S J,et al.Research on nonlinear coupled modeling of land subsidence in Suzhou,Wuxi and Changzhou areas,China.Hydrogeology and Engineering Geology,2007,34(5):11-16.)
[16] 施小清,冯志祥,姚炳奎等.苏锡常地区深层地下水禁采后土层变形特征分析.第四纪研究,2014,34(5):1062-1071.(Shi X Q,Feng Z X,Yao B K,et al.Study on the deformation characteristics of soil layers after banning groundwater pumping in Su-Xi-Chang area.Quaternary Sciences,2014,34(5):1062-1071.)
[17] 张云,薛禹群,吴吉春等.抽灌水条件下上海砂土层的变形特征和变形参数.水利学报,2006,37(5):560-566.(Zhang Y,Xue Y Q,Wu J C,et al.Characteristics and parameters of sandstrata deformation dueto groundwater pumping in Shanghai.Journal of Hydraulic Engineering,2006,37(5):560-566.)
[18] 王晓梅,于军,姚炳魁等.盐城市地下水资源评价报告.江苏省地质调查研究院,2004.(Wang X M,Yu J,Yao B K,et al.The evaluation of groundwater resource in Yancheng.Geological Survey of Jiangsu Province,2004.)
[19] 施春华,杨仪,刘剑等.南通市地下水资源评价报告.江苏省地质工程勘察院,2008.(Shi C H,Yang Y,Liu J,et al.The evaluation of groundwater resource in Nantong.Geo-engineering Investigation Institute of Jiangsu Province,2008.)