Hydrogeology Of Fractured Rocks – A Question Of Uncertainty About Geometry
Hydrogeology Of Fractured Rocks – A Question Of Uncertainty About Geometry
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裂隙岩石的水文地质学——几何不确定性问题
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
J. Black
中科院分区：
文献类型：
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作者：
J. Black
提出了一种认识裂隙岩水文地质的途径。它首先假定基于裂缝的流动系统的几何形状未知。简要回顾了裂缝网络的概念。该方法使用离散的裂缝网络计算机代码来评估不同几何概念的影响，并帮助设计“几何敏感”的现场测试。提出了一种新型的现场测试方法，该方法可以获得关于导流系数分布、裂缝网络连通性和流动尺寸的信息。流动尺寸是广义的流网几何参数，既可以从单独的试验中解释，也可以从一组试验中解释。可以断言，裂缝系统备选方案可以通过现场试验获得的流动维度分布知识来约束。使用多区测试的距离对压降表示法，将特定的特征合并到这一概率描述中。最后，解释过程回到了减少不确定性的循环过程中的流动的最初概念。
An approach to understanding the hydrogeology of fractured rocks is proposed. It starts by assuming that the geometry of the fracture based flow system is unknown. Fracture network concepts are reviewed briefly. The approach uses a discrete fracture network computer code to evaluate the impact of different geometric concepts and to aid in the design of “geometry-sensitive” field tests. A new type of field test is advocated which produces information on transmissivity distribution, fracture network connectivity and flow dimension. Flow dimension is the generalised flow network geometry parameters which can be interpreted from both individual tests as well as groups of tests. It is asserted that fracture system alternatives can be constrained by field test-derived knowledge of flow dimension distribution. Specific features are incorporated into this otherwise probabilistic description, using the distance versus drawdown representation of multi-zone tests. Finally, the interpretation process leads back to the initial concepts of flow in the cyclical process of reducing uncertainty.