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Effect of regionalized structures on rock fracture process
Xulong Yao1,2,3, Zhen Liu4,5,6, Yanbo Zhang4,5,6
1College of Mining Engineering, North China University of Science and Technology, Tangshan, 063210, China. yaoxulonglg@ncst.edu.cn.
Scientific Reports
|May 7, 2024
Summary
Rock regionalized structures, including skeleton, variable, and damage regions, synergistically control rock failure. Understanding their evolution is key to predicting fracture states and preventing engineering disasters.
Area of Science:
- Geotechnical Engineering
- Rock Mechanics
- Materials Science
Background:
- Rock structure significantly influences failure but internal structure evolution interactions are overlooked.
- Understanding rock regionalized structures is crucial for predicting failure mechanisms.
Purpose of the Study:
- To investigate the evolution laws of rock regionalized structures and their interaction during rock failure.
- To introduce and define regionalized structures as a new concept in rock mechanics.
Main Methods:
- Experimental study of rock failure using visual acoustic imaging monitoring.
- Introduction and classification of regionalized structures: skeleton, variable, and damage regions.
- Analysis of four complex rock structure categories based on regionalized structures.
Main Results:
- Identified three types of regionalized structures: skeleton, variable, and damage regions.
- Classified four complex rock structures: block-type, point column-type, suspension-type, and no skeletons.
- Demonstrated synergistic control of rock failure by these structures, with varying fracture states despite similar evolution.
Conclusions:
- Regionalized structures synergistically govern rock failure, with their evolutionary relationships impacting fracture modes.
- Stress and strain distributions reveal how regionalized structure capacities influence failure.
- Findings offer insights into rock failure mechanisms and disaster prevention in rock engineering.
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