A Calculation Method of Three-Dimensional Penetration Tensor
A technology of seepage tensor and calculation method, which is applied in calculation, special data processing applications, instruments, etc., can solve the problem of heavy seepage calculation workload, avoid crack processing work, and improve the calculation quantity and efficiency.
Active Publication Date: 2018-05-25
CENT SOUTH UNIV
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[0006] In order to solve the technical problem that the calculation workload of seepage in fractured rock mass is too large in the current three-dimensional situation, the present invention provides a three-dimensional seepage tensor calculation method that can effectively improve the calculation efficiency of effective fractures
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specific Embodiment
[0061] There are mainly 4 groups of cracks developed on a certain slope, and the specific occurrences are as follows:
[0062] Group 1: bedding surface, concentrated occurrence: N45°W, NE∠11°, basically connected through the west side, the extension length is more than 20m, the development interval is about 0.5m, and the width is 0.2mm-1.0mm;
[0063] The concentrated occurrence of the second group: N20°E, NW∠82°, except for the interlayer structural plane, the structural plane of this group is the most developed, the development interval is 0.4m-1.0m, and the development length is 15m-30m, showing the characteristics of tension and torsion , more than 0.5mm to 1.5mm open, and a few of them develop melting grooves at the intersection with the interlayer structural plane;
[0064] Group 3 concentrated occurrence: N41°W, NE∠53°, mainly developed on the east side slope, with a distance of 0.4m to 1.0m, a length of 5m to 10m, and an extension of 0.4mm to 1.2mm;
[0065] Group 4 c...
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The invention discloses a three-dimensional seepage tensor calculation method. On the basis of two-dimensional fracture network seepage analysis, the two-dimensional section is rotated along a certain axis, and the permeability coefficient in each direction of the two-dimensional section is calculated under different rotation angles, and an ellipse is drawn. Finally, the permeability coefficient tensor of three-dimensional fractures is approximated by regression analysis. In the two-dimensional fracture network seepage calculation, one-dimensional line elements are used to simulate fractures, which effectively avoids the complex fracture processing work in the three-dimensional fracture network model. In the crack calculation, because the dimension of the solution equation is reduced from three-dimensional to two-dimensional, the calculation quantity and efficiency of effective cracks can be greatly improved.
Description
technical field [0001] The invention relates to a three-dimensional permeability tensor calculation method. Background technique [0002] Classical seepage theory is based on the assumption of continuous media, but in reality, most media are discrete. In order to apply discrete media to classical percolation theory, the concept of representational volume (REV) is introduced, so that the actually discrete porous medium is equivalent to a continuous medium composed of representational volumes. When the size of the characterizing unit is small compared with the size of the research area, the continuum seepage theory can be used for analysis. For porous media such as soil, the characterization unit is very small, and the continuum seepage theory can be directly applied. For the rock mass, since there are usually various joints and fissures in the rock mass, when the fluid flows through the rock mass, it mainly passes through the fissures. There are two main differences betwee...
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IPC IPC(8): G06F17/50
Inventor 雷金山刘正夫杨秀竹叶志凌康镜
Owner CENT SOUTH UNIV