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

A photogrammetry and geostress technology, applied in the directions of measurement device, 2D image generation, 3D modeling, etc., can solve the problem that the anisotropy calculation formula has not been obtained, the RQD anisotropy cannot be reflected, and the anisotropy solution has not been obtained. methods, 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
[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 photogrammetry, BQ, RQDt and crustal stress
  • Improved method of Mathews stability diagram method based on photogrammetry, BQ, RQDt and crustal stress
  • Improved method of Mathews stability diagram method based on photogrammetry, BQ, RQDt and crustal stress

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Embodiment Construction

[0208] The present invention will be further described below with reference to the accompanying drawings.

[0209] refer to Figure 1 to Figure 6 , a photogrammetry-based, BQ, RQD t 1. An improved method of the Mathews stability diagram method of in-situ stress, comprising the following steps:

[0210] 1) Rapid acquisition of structural surface digital photogrammetry, the process is as follows:

[0211]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;

[0212] 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 ...

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Abstract

The invention relates to an improved method of a Mathews stability diagram method based on photogrammetry, BQ, RQDt and crustal stress, and belongs to the field of improvement of the Mathews stable diagram method, which 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 optimalthreshold t solving method based on BQ inversion; (7) performing an RQDt anisotropy solving method; (8) performing a crustal stress measurement method; and (9) performing an improved method of a Mathews stability diagram method. According to the invention, photogrammetry, fuzzy equivalence analysis, a BQ theory, a fracture network model, a generalized RQD theory and a crustal stress measurement method are combined, the optimal threshold t of RQDt and anisotropy of RQDt are solved, and method improvement of a Mathews stable graph method is achieved. The method provided by the invention is clearand is suitable for improving a Mathews stability diagram method.

Description

technical field [0001] The invention relates to a photogrammetric, BQ, RQD based t , the improved method of the Mathews stability graph method of ground stress, especially the present invention is based on photogrammetry, fuzzy equivalent analysis, 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 photogrammetry, 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 method based on the Q system propo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06K9/62G06F30/20G06F30/13G06F7/58G01D21/02G06T11/20G06T17/00G06F119/14
CPCG06Q10/06393G06Q10/06395G06F30/20G06T17/00G06F7/588G06T11/203G06T11/206G06F30/13G01D21/02G06F2119/14G06F18/23G06F18/22
Inventor 胡高建
Owner SHAOXING UNIVERSITY
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