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- Title
LABORATORY STUDY OF DYNAMIC FRACTURE IN PRE-DRILLED BOREHOLES AND ASSOCIATED HOST ROCK BEHAVIOUR.
- Authors
CHENG GUO ZHANG; XUEBIN GU; WEIYAO GUO; XUFEI GONG; HENGYU FANG; HE HUANG
- Abstract
To better understand the influence of the openings and their relationship with the host rock, laboratory tests were conducted on a range of sandstone specimens with different proportions of D/H (hole diameter/specimen height) ratio. Acoustic emission (AE) and video monitoring were used to capture the rock specimen responses. The results showed that if the D/H ratio was less than 0.3, the fracture mode occurred in the hole, indicating that this was an appropriate ratio. In addition, the "short quiet period" of AE energy can be used as a precursor for determining the burst in the opening.
- Subjects
BOREHOLES; ACOUSTIC emission; SANDSTONE; ROCK bursts; DYNAMICAL systems
- Publication
Journal of Theoretical & Applied Mechanics (14292955), 2024, Vol 62, Issue 1, p47
- ISSN
1429-2955
- Publication type
Article
- DOI
10.15632/jtam-pl/175127