RQDt anisotropy solving method based on laser scanning, RQD and optimal threshold

An optimal threshold and anisotropy technology, applied in 3D modeling, character and pattern recognition, design optimization/simulation, etc., can solve problems that cannot reflect RQD anisotropy, have not obtained anisotropy calculation formula, and have not yet obtained Anisotropy solution method and other issues

Inactive Publication Date: 2021-03-09
SHAOXING UNIVERSITY
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Problems solved by technology

Deer proposed the concept of borehole RQD in 1964. Due to the following two shortcomings in the application of borehole RQD: whether the threshold value of 100 mm is reasonable for different engineering scale rock masses; the drilling direction of the borehole is limited, and the obtained RQD can only reflect local rock mass conditions, but cannot reflect RQD anisotropy
[0010] The anisotropy of RQD directly affects the quality of the rock mass, and the mechanism of the influence of RQD anisotropy on the quality of the rock mass has not yet been explored clearly
In terms of the threshold t, no scholars have given the calculation method of the optimal threshold t, so the RQD based on the optimal threshold t has not been obtained. t Anisotropy calculation formula, and the RQD that can best reflect the quality of rock mass has not yet been obtained t Anisotropy solution method

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  • RQDt anisotropy solving method based on laser scanning, RQD and optimal threshold
  • RQDt anisotropy solving method based on laser scanning, RQD and optimal threshold
  • RQDt anisotropy solving method based on laser scanning, RQD and optimal threshold

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Embodiment Construction

[0191] The present invention will be further described below with reference to the accompanying drawings.

[0192] refer to Figure 1 to Figure 5 , a RQD based on laser scanning, RQD and optimal threshold t An anisotropic solution method, including the following steps:

[0193] 1) Rapid acquisition of structural plane 3D laser scanning, the process is as follows:

[0194] 1.1: According to the scanning target and site conditions, select the location of the scanning machine and set up a tripod. During the erection, it is necessary to ensure that the instrument can completely obtain the three-dimensional point cloud information of the slope rock mass according to a certain scanning route, and at the same time, the tripod table should be ensured as much as possible. level, and place control targets;

[0195] 1.2: Place the scanner host on the tripod table, fix the knob, center the bubble of the host by coarsely adjusting the tripod and fine-tuning the scanner base, and set the...

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Abstract

The invention discloses an RQDt anisotropy solving method based on laser scanning, RQD and an optimal threshold value, and belongs to the field of RQDt anisotropy solving, which comprises the following steps of: (1) quickly obtaining three-dimensional laser scanning of a structural surface; (2) drawing a structural surface pole diagram and an inclined rose diagram; (3) making rock mass quality calculation based on RQD indexes; (4) generating and sectioning a rock mass three-dimensional fracture network model; (5) drawing an RQDt anisotropy diagram; (6) arranging an optimal threshold t solvingmethod based on RQD inversion; and (7) arranging an RQDt anisotropy solving method. Tthree-dimensional laser scanning, an affinity propagation algorithm, an RQD theory, a fracture network model, a generalized RQD theory and inversion calculation are combined, the optimal threshold t and anisotropy of RQDt are solved, and the RQDt anisotropy solving method based on laser scanning, RQD and the optimal threshold is provided. The method is clear, and is suitable for anisotropic solution of rock mass RQDt.

Description

technical field [0001] The present invention relates to a RQD based on laser scanning, RQD and optimal threshold t Anisotropy solution method, especially the present invention is based on three-dimensional laser scanning, nearest neighbor propagation algorithm, RQD index, crack network model and generalized RQD theory, inversion calculates RQD t The range of optimal threshold t and the optimal threshold t value, gives the RQD t Anisotropic solution method, providing a RQD based on laser scanning, RQD and optimal threshold t Anisotropic solution method, belonging to RQD t Anisotropic solution field. Background technique [0002] In nature, anisotropy is ubiquitous. Rock masses exhibit very pronounced anisotropy, with properties that vary with viewing angle and measurement direction. The origin of rock anisotropy changes can be attributed to geological origin, such as unique bedding in sedimentary rocks, unique natural pores in basalt, gneiss structure in gneiss and cleav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06T17/00G06K9/62G06Q10/06
CPCG06F30/20G06T17/00G06Q10/06395G06T2207/10008G06T2207/10028G06F18/23
Inventor 胡高建周长冰张贺
Owner SHAOXING UNIVERSITY
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