一种基于钻孔弹模计的地应力测试方法
By using an improved borehole modulus gauge and Kaiser effect, combined with an acoustic emission sensor, ground stress testing was conducted, which solved the problem of insufficient accuracy in traditional methods. This improved the reliability of ground stress testing, simplified the operation, and enhanced the accuracy and rationality of the test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
- Filing Date
- 2023-10-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing geostress testing methods lack accuracy and stability in rock engineering. Traditional methods are complex to operate and have large errors, making it difficult to meet the needs of engineering applications.
An improved borehole modulus gauge was used. By setting an acoustic emission sensor on the borehole modulus gauge probe and combining it with the Kaiser effect, a step-by-step pressurization cycle test was conducted. Acoustic emission, displacement and pressure data were recorded, and a Kaiser stress circumferential pole distribution diagram was plotted to determine the direction of the principal stress.
It improves the accuracy and reliability of geostress testing, simplifies the operation process, avoids the influence of disturbance during rock specimen preparation, and enhances the accuracy and rationality of test results, enabling comparison and verification with borehole elastic modulus test results.
Smart Images
Figure CN117386346B_ABST