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

A technology of laser scanning and ground stress, applied in the direction of applying stable tension/pressure to test material strength, 2D image generation, 3D modeling, etc., can solve the problem that the anisotropy calculation formula cannot be obtained, and the RQD anisotropy cannot be reflected Anisotropy, the method of solving anisotropy has not yet been obtained, etc.

Inactive Publication Date: 2021-01-08
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
[0012] 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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  • Improved method of Mathews stability diagram method based on laser scanning, BQ, RQDt and crustal stress
  • Improved method of Mathews stability diagram method based on laser scanning, BQ, RQDt and crustal stress
  • Improved method of Mathews stability diagram method based on laser scanning, BQ, RQDt and crustal stress

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Embodiment Construction

[0217] The present invention will be further described below with reference to the accompanying drawings.

[0218] refer to Figure 1 to Figure 6 , a laser-scanning, BQ, RQD-based t 1. An improved method of the Mathews stability diagram method of in-situ stress, comprising the following steps:

[0219] 1) Rapid acquisition of structural plane 3D laser scanning, the process is as follows:

[0220] 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;

[0221] 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 ...

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Abstract

The invention relates to an improved method of a Mathews stability diagram method based on laser scanning, BQ, RQDt and crustal stress, and belongs to the field of method improvement of the Mathews stability diagram method. The improved method comprises the following steps of: (1) quick obtaining of three-dimensional laser scanning of a structural plane; (2) structural plane clustering analysis; (3) rock mass quality calculation based on a BQ index; (4) generating and sectioning of a rock mass three-dimensional fracture network model; (5) drawing of an RQDt anisotropy diagram; (6) an optimal threshold t solving method based on BQ inversion; (7) an RQDt anisotropy solving method; (8) a crustal stress measurement method; and (9) an improved method of a Mathews stability diagram method. According to the method, three-dimensional laser scanning, structural plane clustering analysis, a BQ theory, a fracture network model, a generalized RQD theory and a crustal stress measurement method arecombined, solving of the optimal threshold t of RQDt and anisotropy of RQDt is achieved, and method improvement of a Mathews stable diagram method is achieved. The method provided by the invention isclear 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 , the improved method of the Mathews stability map method of ground stress, especially the present invention is based on three-dimensional laser scanning, neighbor propagation algorithm, BQ index, fracture network model, generalized RQD theory and ground stress measurement method, 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 The fitting method of anisotropy and ground stress provides a method based on laser scanning, BQ, RQD t 1. An improved method of the Mathews stability diagram method of in-situ stress, which belongs to the method improvement field of the Mathews stability diagram 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 meth...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G01B11/25G01N3/08G06F7/58G06F30/13G06F30/20G06K9/62G06T11/20G06T17/00G06F119/14
CPCG06Q10/06393G06Q10/06395G06F30/20G06T17/00G06F7/588G06T11/203G06T11/206G06F30/13G01N3/08G01B11/2518G01N2203/0252G01N2203/0647G06F2119/14G06F18/22G06F18/23
Inventor 胡高建
Owner SHAOXING UNIVERSITY
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