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Development of a model applied to subsidence due to fluid withdrawal

机译:开发适用于因抽水而导致沉降的模型

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摘要

A visco-elastic analytical model is presented for the simulation of large scale groundwater flow and land subsidence. Groundwater flow is simulated by a two-dimensional flow model. Land subsidence is modeled vertically by using the Taylor-Merchant one dimensional consolidation theory. In application, multiple aquifers are generalized by using a field approach based on a few 'bulk parameters', which allows the direct use of records obtainable in situ.;The visco-elastic model is applied to analyze and predict the land subsidence in Bangkok, Thailand. The results demonstrate that the visco-elastic model can yield a satisfactory prediction of consolidation that is better than that obtained with the classical Theis-Jacob approach.;Predictions of the piezometric head and subsidence for the 20 years from 1981-2000 were made based on the following three scenarios: (1) a constant withdrawal at 1980's rate, (2) a cessation of all pumping wells, and (3) simultaneous pumping and injection, with injection exceeding 1980's pumping rate by 50%.
机译:提出了一种粘弹性分析模型,用于模拟大规模地下水流和地面沉降。通过二维流模型模拟地下水流。地面沉降是使用泰勒-商户一维固结理论垂直建模的。在实际应用中,采用基于几个“散装参数”的现场方法对多个含水层进行了概括,从而可以直接使用就地获得的记录。粘弹性模型用于分析和预测曼谷的地面沉降,泰国。结果表明,粘弹性模型可以产生令人满意的固结预测,优于经典的Theis-Jacob方法获得的结果; 1981-2000年的20年间,测压头和沉降的预测基于以下三种情况:(1)以1980年代的速度不断撤出,(2)停止所有抽水井,(3)同时进行抽水和注水,注水超过1980年代的抽水率50%。

著录项

  • 作者

    Gu, Dali.;

  • 作者单位

    McGill University (Canada).;

  • 授予单位 McGill University (Canada).;
  • 学科 Geotechnology.;Hydrologic sciences.;Environmental engineering.
  • 学位 M.Eng.
  • 年度 1995
  • 页码 122 p.
  • 总页数 122
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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