Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Improved method of Mathews stability graph 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 of RQD anisotropy that cannot be reflected, an anisotropic solution method has not been obtained, and anisotropy has not been obtained. Problems such as the calculation formula of the opposite sex

Inactive Publication Date: 2020-12-29
SHAOXING UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Improved method of Mathews stability graph method based on photogrammetry, BQ and RQDt anisotropy
  • Improved method of Mathews stability graph method based on photogrammetry, BQ and RQDt anisotropy
  • Improved method of Mathews stability graph method based on photogrammetry, BQ and RQDt anisotropy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0188] The present invention will be further described below with reference to the accompanying drawings.

[0189] refer to Figure 1 to Figure 5 , a photogrammetry-based, BQ, RQD t An improved method of the anisotropic Mathews stable graph method, comprising the following steps:

[0190] 1) Rapid acquisition of structural surface digital photogrammetry, the process is as follows:

[0191] 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;

[0192] 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 re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an improved method of a Mathews stability graph method based on photogrammetry and BQ and RQDt anisotropism, and belongs to the field of improvement of the Mathews stable graphmethod, 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 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 graph method. According to the invention, photogrammetry, fuzzy equivalence analysis, a BQ theory, a fracture network model, a generalized RQD theory and inversion calculation are combined, the optimal threshold t of RQDt and anisotropy of RQDtare solved, and improvement of a Mathews stable graph method is achieved. The method provided by the invention is clear and is a method suitable for Mathews stability graph improvement.

Description

technical field [0001] The invention relates to a photogrammetric, BQ, RQD based t An improved method of the anisotropic Mathews stable graph method, especially the present invention is based on photogrammetry, fuzzy equivalence analysis, 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 The anisotropy provides a method based on photogrammetry, 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 number of engineering exampl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06Q10/06G06K9/62G06F30/20G06F30/13G06F7/58G01C11/04G01C11/02G06T11/20G06T17/00G06F119/14
CPCG06Q10/06393G06Q10/06395G06F30/20G06T17/00G06F7/588G06T11/203G06T11/206G06F30/13G01C11/02G01C11/04G06F2119/14G06F18/23G06F18/22
Inventor 胡高建
Owner SHAOXING UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com