Method for making and evaluating mechanical properties of intact-fractured-intact combined rock specimen
By fabricating and experimenting with complete-fragmented-complete composite rock specimens, the problem that existing technologies cannot study the influence of pre-fragmentation size on the mechanical properties of composite rock structures has been solved, thus providing scientific guidance for the prevention and control of rockbursts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- INNER MONGOLIA RESEARCH INSTITUTE CHINA UNIVERSITY OF MINING AND TECHNOLOGY (BEIJING)
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing specimens cannot reflect and study the mechanical properties of the 'intact-fragmented-intact' composite rock strata structure, nor can they explore the influence of pre-fragmentation size on the mechanical properties of the composite rock strata structure.
A rectangular specimen with a square cross-section was prepared. A square ring sleeve was formed by cutting and a cubic block was bonded together to construct a complete-fragmented-complete rock specimen with different pre-fragmentation sizes. Uniaxial or triaxial compressive strength tests were conducted to study the effect of pre-fragmentation size on compressive strength and elastic modulus.
It can accurately reflect the pre-splitting conditions of high-level rock strata in actual engineering projects, analyze the effect of pre-splitting block size on rockburst prevention and control, and provide scientific guidance.
Smart Images
Figure CN122409274A_ABST