北京地面沉降与地下水开采时空演变对比

发布时间：2018-02-24 18:00

本文关键词： 地面沉降地下水时空演变北京平原区　出处：《南水北调与水利科技》2017年02期 　论文类型：期刊论文

【摘要】：区域地面沉降是世界上很多城市都要面对的一种"城市病"。地下水过量开采是这一问题最普遍的原因,北京也因此出现了严重的地面沉降问题。为了全面认识地下水开采格局变化下的地面沉降发育分布的新特点,推动实现《北京地面沉降防治规划(2013-2020年)》中的"控沉目标",对北京市从解放初期至今60多年间的地下水开采和地面沉降演变进行了时间和空间上的定性定量对比分析。结果表明:地面沉降的形成发展阶段与地下水开发利用阶段高度吻合;地面沉降中心区与地下水位降落漏斗区的时空变化高度相关;随着地下水开采深度整体上向地表以下更深层发展,主沉降层逐渐向深部(100m以下)地层转移,为地面沉降防控决策制定提供了依据。
[Abstract]:Regional land subsidence is a kind of "urban disease" that many cities in the world have to face. The most common cause of this problem is the over-exploitation of groundwater. In order to fully understand the new characteristics of the development and distribution of ground subsidence under the change of groundwater exploitation pattern, To promote the realization of the "target of controlling subsidence" in "Beijing Land subsidence Prevention Plan 2013-2020", a qualitative and quantitative comparison of groundwater exploitation and ground subsidence evolution in Beijing from the initial period of liberation to more than 60 years has been carried out in terms of time and space. The results show that the formation and development stage of land subsidence is highly consistent with the stage of groundwater exploitation and utilization. There is a high correlation between the spatial and temporal variation of the ground subsidence center area and the groundwater level falling funnel area, and with the groundwater mining depth developing further below the surface, the main subsidence layer gradually moves to the depth below 100 m). It provides a basis for the decision making of land subsidence prevention and control.
【作者单位】：北京市水文地质工程地质大队;中国科学院大学地球科学学院;北京市地质矿产勘查开发局;
【基金】：北京市科技计划课题(Z131100005613022) 北京市自然科学基金(8162043) 北京市地质矿产勘查开发局地质科研项目(dkjdzky2013005) 北京市政府财政项目(国土京环[2004]75号)~~
【分类号】：P641.8;P642.26

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