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Improved method of Mathews stability diagram method based on laser scanning, BQ and RQDt anisotropism

An anisotropic, laser scanning technology, used in 2D image generation, 3D modeling, geometric CAD, etc., can solve the problem of not yet obtained anisotropy solution method, cannot reflect RQD anisotropy, and not obtained anisotropy Calculation formula, etc.

Inactive Publication Date: 2020-12-29
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
[0011] 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

Method used

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  • Improved method of Mathews stability diagram method based on laser scanning, BQ and RQDt anisotropism
  • Improved method of Mathews stability diagram method based on laser scanning, BQ and RQDt anisotropism
  • Improved method of Mathews stability diagram method based on laser scanning, BQ and RQDt anisotropism

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Embodiment Construction

[0197] The present invention will be further described below with reference to the accompanying drawings.

[0198] refer to Figure 1 to Figure 5 , a laser-scanning, BQ, RQD-based t An improved method of the anisotropic Mathews stable graph method, comprising the following steps:

[0199] 1) Rapid acquisition of structural plane 3D laser scanning, the process is as follows:

[0200] 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;

[0201] 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, ...

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Abstract

The invention relates to an improved method of a Mathews stability diagram method based on laser scanning and BQ and RQDt anisotropy, and belongs to the field of improvement method of the Mathews stable diagram method. The improved method comprises the following steps: (1) obtaining structural plane three-dimensional laser scanning rapidly; (2) performing structural plane clustering analysis; (3)performing rock mass quality calculation based on a BQ index; (4) generating and sectioning a rock mass three-dimensional fracture network model; (5) drawing an RQDt anisotropy diagram; (6) performingan optimal threshold t solving method based on BQ inversion; (7) performing an RQDt anisotropy solving method; and (8) performing an improved method of a Mathews stability diagram method. According to the invention, three-dimensional laser scanning, structural plane clustering analysis, a BQ theory, a fracture network model and a generalized RQD theory are combined, solving of the optimal threshold t of RQDt and anisotropy of RQDt is achieved, and improvement of a Mathews stability diagram method is achieved. The method provided by the invention is clear and is suitable for improving a Mathews stability diagram method.

Description

technical field [0001] The invention relates to a method based on laser scanning, BQ, RQD t An improved method of the anisotropic Mathews stable graph method, especially the present invention is based on three-dimensional laser scanning, neighbor propagation algorithm, BQ 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, and based on RQD t Anisotropy, provides a method based on laser scanning, BQ, RQD t The invention relates to an improved method of an anisotropic Mathews stable graph method, which belongs to the method improvement field of the Mathews stable graph method. Background technique [0002] The Mathews stability diagram method is a kind of analysis method for the stability of the surrounding rock of the mine. It is a stability diagram method based on the Q system proposed by Mathews et al in 1980 by analyzing a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06K9/62G06F30/20G06F30/13G06F7/58G01B11/00G06T11/20G06T17/00G06F119/14
CPCG06Q10/06393G06Q10/06395G06F30/20G06T17/00G06F7/588G06T11/203G06T11/206G06F30/13G01B11/002G06F2119/14G06F18/2321
Inventor 胡高建
Owner SHAOXING UNIVERSITY
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