京沪高铁沿线某地地下水开采与地面沉降关系分析

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摘要京沪高速铁路沿线地面沉降除受软土本身性质影响外，主要受沿线地区长期过量开采地下水的影响。结合DInSAR与地面精密水准测量结果，选取京沪高速铁路天津段西青区杨柳青镇沉降异常区(火电厂深部抽水井所致)为研究区域，通过分析抽水井所在部位地质结构和水文地质条件，建立水文地质概念模型，采用Visual Modflow软件对研究区地下水位变化进行数值模拟。在此基础上，结合该地区地面沉降量与地下水位变化间的相互关系，计算出不同开采量、开采时间下的地面沉降量，得出京沪高速铁路穿过部位的沉降量预测，为高铁安全运营采取处理对策提供依据。

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关键词 ：工程地质, 高速铁路, 地下水位, 地面沉降, 数值模拟

Abstract：Except the impact of soft soil，the main influencing factor of land subsidence is the long-term over- exploitation of groundwater along Beijing—Shanghai High-speed Railway(BSHR). Combining with the results of DInSAR and precise ground leveling，taking the land subsidence anomalous area(caused by deep-well pumping in a thermal plant) in Yangliuqing town，Xiqing district of Tianjin for example，through the analysis of geological structure and hydrogeological conditions of the pumping wells region，the hydrogeological conceptual model is established；and the numerical simulation research on groundwater level variation caused by groundwater exploitation is carried out with Visual Modflow software. Based on the research above，according to the correlation between land subsidence and groundwater level variation，the land subsidence under different groundwater exploitation amounts and different exploitation times are calculated；and the land subsidence amplitude and velocity under BSHR are predicted. The countermeasures can be put forward for the safety of high-speed railway according to the research.

Key words： engineering geology high-speed railway groundwater level land subsidence numerical simulation

收稿日期: 2011-02-24

引用本文:

胡卸文1，2，宋大各1，王帅雁1，李扬3，孙敏辉4，钟生军1，胡恒洋5. 京沪高铁沿线某地地下水开采与地面沉降关系分析[J]. 岩石力学与工程学报, 2011, 30(9): 1738-1746.
HU Xiewen1，2，SONG Dage1，WANG Shuaiyan1，LI Yang3，SUN Minhui4，ZHONG Shengjun1，HU Hengyang5. ANALYSIS OF CORRELATION BETWEEN GROUNDWATER EXPLOITATION AND LAND SUBSIDENCE IN CERTAIN AREAS ALONG BEIJING—SHANGHAI HIGH-SPEED RAILWAY. , 2011, 30(9): 1738-1746.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/I9/1738

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