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Improved Mathews stability diagram evaluation method based on photogrammetry, BQ and RQDt anisotropy

An anisotropic, photogrammetric technology, applied in 2D image generation, 3D modeling, photo interpretation, etc., can solve the problem that the anisotropy solution method has not been obtained, cannot reflect the RQD anisotropy, and the anisotropy has not been obtained. Problems such as the calculation formula of the opposite sex

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

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  • Improved Mathews stability diagram evaluation method based on photogrammetry, BQ and RQDt anisotropy
  • Improved Mathews stability diagram evaluation method based on photogrammetry, BQ and RQDt anisotropy
  • Improved Mathews stability diagram evaluation method based on photogrammetry, BQ and RQDt anisotropy

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Embodiment Construction

[0198] The present invention will be further described below with reference to the accompanying drawings.

[0199] refer to Figure 1 to Figure 6 , a photogrammetry-based, BQ, RQD t Anisotropic improved Mathews stability map evaluation method, including the following steps:

[0200] 1) Rapid acquisition of structural surface digital photogrammetry, the process is as follows:

[0201] 1.1: According to the scope and spatial position of the rock mass in the observation area, select the rock mass with well-developed surface joints and no obstacles as the photogrammetry area, and place the benchmark vertically on one side of the measurement area to calibrate the final generated 3D image the distance between any two points;

[0202] 1.2: Select an outcropping, relatively large area, and relatively smooth structural surface on the surface of the rock mass as a calibration point, use a compass to measure the inclination and inclination angle, and mark it, which is used to realize ...

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Abstract

The invention discloses an improved Mathews stability diagram evaluation method based on photogrammetry, BQ and RQDt anisotropy, and belongs to the field of Mathews stability diagram evaluation methods, and the method comprises the following steps: (1) quickly obtaining structural plane digital photogrammetry; (2) performing structural plane fuzzy equivalent 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) performing an optimal threshold t solving method based on BQ inversion; (7) performing an RQDt anisotropy solving method; (8) performing an improved method of a Mathews stability graph method; and (9) improving a Mathews stability diagram evaluation method. According to the invention, photogrammetry, fuzzy equivalence analysis, a BQ theory, a fracture network model and a generalized RQD theory are combined, and improvedMathews stability graph method mine room stability evaluation considering RQDt anisotropism is achieved. The method is clear and suitable for evaluating the stability of the mine room surrounding rock.

Description

technical field [0001] The invention relates to a photogrammetric, BQ, RQD based t Anisotropic improved Mathews stable map evaluation method, especially the present invention is based on photogrammetry, fuzzy equivalence analysis, BQ index, crack network model and generalized RQD theory, and the RQD is calculated by inversion 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 anisotropy of the Mathews stable map method is given, and a method based on photogrammetry, BQ, RQD is provided t An anisotropic improved Mathews stable graph evaluation method belongs to the field of Mathews stable graph evaluation methods. 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 number of enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06K9/62G06F30/20G06F30/13G06F7/58G01C11/12G06T11/20G06T17/00G06F119/14
CPCG06Q10/06393G06Q10/06395G06F30/20G06T17/00G06F7/588G06T11/203G06T11/206G06F30/13G01C11/12G06F2119/14G06F18/23G06F18/22
Inventor 胡高建
Owner SHAOXING UNIVERSITY
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