Rock scratch test device based on true triaxial stress

By designing a true triaxial stress rock scratch testing device, and using lateral and axial loading mechanisms to simulate the stress conditions of rocks at different depths, the problem of rock test result error was solved, and more accurate measurement of rock mechanical parameters was achieved.

CN120948260BActive Publication Date: 2026-05-05CHINA UNIV OF PETROLEUM (BEIJING)
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Patent Information

Application Number
CN202511230047.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-29
Publication Date
2026-05-05
Estimated Expiration
2045-08-29

AI Technical Summary

Technical Problem

Existing rock scratch testing devices have errors in their test results because the confining stress on rocks at different depths underground varies.

Method used

Design a rock scratch testing device based on true triaxial stress. Use a support base to support the rock sample and set at least two lateral loading mechanisms and an axial loading mechanism to simulate the actual pressure on the rock at different depths and apply corresponding lateral and axial pressures to accurately scratch the rock sample.

Benefits of technology

It effectively reduces the error of test results, improves the accuracy of rock test results, and enables precise testing based on the actual stress conditions of rocks at different depths.

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Abstract

This application provides a rock scratch testing device based on true triaxial stress, relating to the field of rock performance testing technology. The rock scratch testing device based on true triaxial stress includes: a support base; at least two lateral loading mechanisms, which are arranged opposite each other along the width direction of the support base, and at least one lateral loading mechanism is arranged along the length direction of the support base, with the at least two lateral loading mechanisms respectively used to apply lateral pressure to opposite sides of the rock sample; two axial loading mechanisms, which are used to apply pressure to the end faces of both ends of the rock sample; and a scratching mechanism to scratch the side surface of the rock sample. By setting at least two lateral loading mechanisms to apply corresponding lateral pressure to the side surfaces of different areas of the rock sample, and by applying pressure to the end faces of the rock sample through the axial loading mechanisms, the pressure on the rock sample is simulated, making the test results more accurate and reducing test errors.
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