Device and method for testing rock mass i / iii mixed fracture under confining pressure
By designing a rotating upper pressure head and a sealing anti-detachment component, the problems of single loading mode and easy detachment of heat shrink tubing in existing devices are solved, realizing continuous loading and uniform stress in rock mass I/III mixed fracture testing, and improving the accuracy and stability of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUIZHOU UNIV
- Filing Date
- 2026-05-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing testing equipment cannot achieve continuous mixed loading from pure Type I to pure Type III, making it difficult to apply confining pressure and causing the heat shrink tubing seal to easily fall off, leading to experimental failure.
A rock mass I/III hybrid fracture testing device under confining pressure was designed. The loading angle can be continuously adjusted by rotating the upper pressure head. A sealing anti-detachment component is used to prevent the heat shrink tubing from slipping off, and a cylindrical protrusion is used to form line contact loading with the specimen.
Continuous loading with different fracture modes was achieved, ensuring the stability of the confining pressure environment and the uniformity of stress on the specimen, thus improving the accuracy and reliability of the test results.
Smart Images
Figure CN122409340A_ABST