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Q anisotropy solving method based on photogrammetry, RQD and RQDt anisotropy

An anisotropic, photogrammetric technology, applied in 3D modeling, design optimization/simulation, image data processing, etc., can solve the problem of not obtaining the anisotropy calculation formula, unable to reflect the RQD anisotropy, and not yet obtaining the anisotropy. Problems such as anisotropy solution methods

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
[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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  • Q anisotropy solving method based on photogrammetry, RQD and RQDt anisotropy
  • Q anisotropy solving method based on photogrammetry, RQD and RQDt anisotropy
  • Q anisotropy solving method based on photogrammetry, RQD and RQDt anisotropy

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[0180] The present invention will be further described below with reference to the accompanying drawings.

[0181] refer to Figure 1 to Figure 5 , a photogrammetry-based, RQD, RQD t Anisotropic Q anisotropy solution method, including the following steps:

[0182] 1) Rapid acquisition of structural surface digital photogrammetry, the process is as follows:

[0183] 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;

[0184] 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 the orientation of ...

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Abstract

A Q anisotropy solving method based on photogrammetry, RQD and RQDt anisotropy belongs to the field of Q anisotropy solving, and comprises the following steps: (1) quickly acquiring structural plane digital photogrammetry; (2) drawing a structural surface pole diagram and a trend rose diagram; (3) making rock mass quality calculation based on RQD indexes; (4) generating and sectioning a rock massthree-dimensional fracture network model; (5) drawing an RQDt anisotropy diagram; (6) arranging an optimal threshold t solving method based on RQD inversion; (7) arranging an RQDt anisotropy solving method; and (8) arranging a Q anisotropy solving method. Photogrammetry, fuzzy equivalent clustering, 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, Q anisotropy is solved, and the Q anisotropy solving method based on photogrammetry, RQD and RQDt anisotropy is provided. The method is clear, and is suitable for anisotropy solution of the rock mass Q.

Description

technical field [0001] The invention relates to a photogrammetry-based, RQD, RQD t Anisotropic Q anisotropy solution method, especially the present invention is based on photogrammetry, fuzzy equivalent clustering, 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, and based on RQD t Anisotropy, the solution method of Q anisotropy is given, and a method based on photogrammetry, RQD, RQD t The method for solving anisotropic Q anisotropy belongs to the field of solving Q anisotropy. Background technique [0002] The appearance and quality of the rock mass strongly depend on the degree of anisotropy of the rock mass, and the stability of the rock mass is determined by the quality of the rock mass. Some geological phenomena have also proved this point. For example, during the excavation process of a roadway or expressway tunnel,...

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Application Information

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IPC IPC(8): G06F30/20G06T17/00G06K9/62G06Q10/06
CPCG06F30/20G06T17/00G06Q10/06395G06T2207/10004G06F18/23
Inventor 胡高建
Owner SHAOXING UNIVERSITY
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