基于Visual MODFLOW的地下水流数值模拟——以四川垮梁子滑坡为例

发布时间：2018-08-18 20:50

【摘要】：以四川省中江县冯店镇垮梁子滑坡为研究对象,通过工程地质勘察查明了研究区基本地层结构,结合水文地质调查与现场试验(电阻率成像法、直流充电法、示踪试验、注水试验等)获得的水文地质参数和边界条件,建立了滑坡区水文地质概念模型,并运用Visual MODFLOW软件构建了垮梁子岩质滑坡体中地下水各向异性三维渗流模型,经过模型的识别及验证,对模型的水文地质参数进行了敏感性分析。结果显示:渗透系数对模型的准确性影响较大,后缘水位对滑坡的稳定性起关键作用。模拟结果可以对垮梁子滑坡预警预报模型的建立提供科学依据。
[Abstract]:Taking the Guoliangzi landslide in Fengdian Town, Zhongjiang County, Sichuan Province as the research object, the basic stratigraphic structure of the study area was found out through engineering geological survey, combined with hydrogeological investigation and field test (resistivity imaging method, direct current charging method, tracer test). Based on the hydrogeological parameters and boundary conditions obtained by water injection test, the hydrogeological conceptual model of landslide area is established, and the three-dimensional seepage model of groundwater anisotropy in landslide is constructed by using Visual MODFLOW software. The sensitivity analysis of the hydrogeological parameters of the model is carried out through the identification and verification of the model. The results show that the permeability coefficient has a great influence on the accuracy of the model, and the water level at the rear edge plays a key role in the stability of the landslide. The simulation results can provide scientific basis for the establishment of early warning and forecasting model of Guoliangzi landslide.
【作者单位】：中国地质大学(北京)水资源与环境学院;
【基金】：中国地质调查项目“西南地区重大地质灾害调查与预警区划”(12120113010100)
【分类号】：P642.22

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