Karstification beneath the Birs weir in Basel/Switzerland : a 3D modeling approach

Karstification beneath the Birs weir in Basel/Switzerland : a 3D modeling approach
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瑞士巴塞尔 Birs 堰下方的岩溶作用:3D 建模方法

DOI:
10.1016/j.jhydrol.2012.04.040
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发表时间:
--
影响因子:
6.4
通讯作者:
Huggenberger
Huggenberger
中科院分区:
地球科学1区
文献类型:
--
作者:
Hiller;Romanov;Kaufmann;Epting;Huggenberger

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我们提出了一个三维模型,描述了一个石膏岩溶含水层沿着比尔斯河附近的巴塞尔在瑞士的演变。1890年,这里修建了一座小型水坝,用于水力发电。在附近的一条公路发生沉降后,进行了地球物理和地质实地研究,并建立了详细的水文地质模型。这些观察结果确定了岩溶风化带是沉降的原因。为了防止进一步的破坏,已采取补救性施工措施。我们采用我们的数值模型KARSTAQUIFER,它通过溶解模拟岩溶系统的时间演化,增加含水层的孔隙度。我们使用地质和地球物理调查的结果作为先验信息,将初始边界条件应用到三维数值模型中。我们的模型考虑了地形,降水和地质,特别是当地基岩的各向异性。它可以成功地再现当前水平和垂直范围内的风化带。我们还可以模拟补救施工阶段后含水层可能的演变。因此,结合地球物理和地质观测以及地下水模型,我们的三维岩溶含水层演化模型增强了对这种非均质岩溶含水层系统的发展的理解。
We present a three-dimensional model describing the evolution of a gypsum karst aquifer along the Birs river near Basel in Switzerland. Here, a small dam-site was built in 1890 to generate hydro-electric power. After subsidence of a nearby highway, geophysical and geological field studies have been carried out and a detailed hydrogeological model has been developed. These observations identified a karstified weathered zone as the reason for the subsidence. To prevent any further damage, remedial construction measures have been carried out. We employ our numerical model KARSTAQUIFER, which simulates the temporal evolution of a karst system by dissolution, increasing the porosity in the aquifer. We used results from geological and geophysical investigations as a priori information for implementing the initial boundary conditions into our three-dimensional numerical model. Our model accounts for topography, precipitation and geology and especially for the anisotropy of the local bedrock. It can successfully reproduce the weathered zone in its current horizontal and vertical extent. We can also simulate the possible evolution of the aquifer following a remedial construction phase. Therefore, taken together with the geophysical and geological observations and the groundwater model, our three-dimensional karst aquifer evolution model enhances the understanding of the development of this heterogeneous karst aquifer system.
应用城市岩溶水文地质的现场和数值模拟方法相结合
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
J. Epting;D. Romanov;P. Huggenberger;G. Kaufmann
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DOI: 10.1016/s0022-1694(00)00323-1
发表时间: 2001-01
影响因子: 6.4
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DOI: 10.1016/0009-2541(92)90106-f
发表时间: 1992-10
期刊: Chemical Geology
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通讯作者: H. Karimi;Toraj Keshavarz;Z. Mohammadi;E. Raeisi
对不断变化的岩溶含水层中的不饱和流进行建模
DOI: --
发表时间: 2003
期刊:
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通讯作者: G. Kaufmann