FLOW ON A SINGLE ROCK FRACTURE IN THE SHEAR PROCESS AND THE VALIDITY OF THE CUBIC LAW EXAMINED THROUGH EXPERIMENTAL RESULTS AND NUMERICAL SIMULATIONS
FLOW ON A SINGLE ROCK FRACTURE IN THE SHEAR PROCESS AND THE VALIDITY OF THE CUBIC LAW EXAMINED THROUGH EXPERIMENTAL RESULTS AND NUMERICAL SIMULATIONS
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DOI：
10.3208/sandf.49.597
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发表时间：
2009-08
影响因子：
3.7
通讯作者：
K. Kishida;Prosper Mgaya;K. Ogura;T. Hosoda
中科院分区：
文献类型：
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作者：
K. Kishida;Prosper Mgaya;K. Ogura;T. Hosoda
为了探讨岩石粗糙面裂隙的渗流问题，对不同裂隙的岩石进行了直剪和流动耦合试验。通过实验结果，对裂隙上的渗流和立方定律的有效性进行了讨论和评价。因此，可以理解，三次定律不能充分解释实验结果，尽管它可以部分地考虑Re在0.02到0.2范围内的实验结果。此外，还利用二维模型进行了包含惯性项的数值模拟。与具有代表性的裂隙流模型LCL(局部立方定律)相比，二维裂隙流模型表现出了较好的裂隙流特性。裂缝上的流动表现为通道流动和较高的Re值。因此，裂缝上的流动被认为是由惯性项的影响引起的。
In order to discuss the flow through a rough surface rock fracture, direct shear and flow coupling tests on various rock fractures are carried out. Through the experimental results, the flow on the fracture and the validity of the cubic law are discussed and estimated. As a result, it is understood that the cubic law cannot sufficiently explain the experimental results, although it can partially take into account the experimental results in the Re range of 0.02 to 0.2. Moreover, a simulation by a 2D model, including the inertia term, has been carried out. The 2D model has been found to show a good performance of the fracture flow in comparison with the representative fracture flow model, namely, LCL (local cubic law). The flow on the fracture shows the channeling flow and a higher Re value. Consequently, the flow on the fracture is thought to be caused by the influence of the inertia term.