Shear loss volume solving method and device, electronic equipment and storage medium

By performing two circular cropping and alignment operations on the three-dimensional point cloud data of the rock test group, combined with three-dimensional laser scanning, the problem of accuracy in calculating the shear loss volume of rocks after immersion in water was solved, and efficient and accurate measurement of shear loss volume was achieved.

CN121706213BActive Publication Date: 2026-07-03CHINA COAL RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA COAL RES INST
Filing Date
2026-02-09
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing methods for calculating rock shear loss volume fail or become inaccurate after immersion in water, making it impossible to accurately predict engineering risks.

Method used

By acquiring three-dimensional point cloud data of the rock test group, two circular cuts were performed. First, the top area was cut with a preset radius. Then, the area was aligned in a unified coordinate system and cut with a smaller radius. Combined with three-dimensional laser scanning, the shear loss volume was calculated.

Benefits of technology

It enables non-contact, high-precision acquisition of shear deformation data from water-soaked rough rocks, eliminating interference from sample placement and edge damage, and improving the accuracy and efficiency of shear loss volume calculation.

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Abstract

This application relates to a method, apparatus, electronic device, and storage medium for calculating shear loss volume. It involves acquiring first three-dimensional point cloud data of the surface joints of rocks in a rock test group before and after shearing; performing a first circular cut on the first three-dimensional point cloud data of each rock to obtain a first circular region; and then performing a second circular cut on the second three-dimensional point cloud data of each rock to obtain a second circular region. Based on the coordinate information of the second circular regions of the sheared rock and the reference unsheared rock, the shear loss volume corresponding to each sheared rock is determined. By combining rock shearing tests with three-dimensional laser scanning, a reliable method is provided for non-contact, high-precision acquisition of shear deformation data of water-soaked rough rocks. The design of two circular cut processes ensures that all samples are ultimately compared within the same spatial range and coordinate system, eliminating interference caused by sample placement and edge damage, thus laying the foundation for accurate calculation.
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Citation Information

Patent Citations

  • Natural rock joint surface three-dimensional roughness evaluation method based on effective weighted area ratio

    CN118918084A

  • Rock joint surface shear failure area identification and volume calculation method

    CN118918173A