A Novel True Triaxial Apparatus for Simulating Strain Bursts Under High Stress

This paper introduces a new high-pressure servo true triaxial rockburst experimental apparatus that can realize multi-face rapid unloading in the horizontal direction. The apparatus is used to simulate different types of strain burst phenomena in deep underground engineering, such as those at roadwa...

Full description

Saved in:
Bibliographic Details
Published inRock mechanics and rock engineering Vol. 54; no. 2; pp. 759 - 775
Main Authors He, Manchao, Li, Jieyu, Liu, Dongqiao, Ling, Kai, Ren, Fuqiang
Format Journal Article
LanguageEnglish
Published Vienna Springer Vienna 01.02.2021
Springer Nature B.V
Subjects
Civil Engineering
Earth and Environmental Science
Earth Sciences
Geophysics/Geodesy
High pressure
High speed cameras
Horizontal orientation
Intersections
Original Paper
R&D
Research & development
Roads & highways
Rockbursts
Stability
Strain burst
Systems stability
Underground roadways
Unloading
Multi-face rapid unloading
Rockburst
True triaxial
Experiment
Strain burst
Online AccessGet full text

Cover

More Information
Summary:This paper introduces a new high-pressure servo true triaxial rockburst experimental apparatus that can realize multi-face rapid unloading in the horizontal direction. The apparatus is used to simulate different types of strain burst phenomena in deep underground engineering, such as those at roadways, roadway intersections, and pillars with three and four free faces. In the research and development process, apparatus technologies were included to overcome five key challenges: rapid unloading under high pressure, loading gap removal fixture, three-way loading alignment, symmetrical loading, and system stability after unloading. The apparatus is used to carry out multi-face unloading strain burst experiments and can fully satisfy the experimental requirements. The entire strain burst process is recorded using a high-speed camera. The apparatus can provide experimental support for strain burst mechanism research and an experimental basis for different types of strain burst research.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0723-2632
1434-453X
DOI:10.1007/s00603-020-02285-y