Research on acoustic emission characteristics of metagabbros with different felsic development under splitting load
Source abstract
Abstract
The acoustic emission (AE) characteristic signal can reveal the mechanical properties of rock materials and the development characteristics of internal microcracks. Rocks with different mineral development characteristics produce different AE signals during fracture. This study selected variable metagabbros with varying feldspathic development for AE tests under splitting load. The results demonstrated that the characteristics of AE ringing counts during the Brazilian fracture of metagabbro were closely correlated with the content of felsic minerals. The cumulative AE ringing count of metagabbros with feldspar nondevelopment exceeded 250 000, while those of metagabbros with feldspar development did not reach 200 000. As the feldspathic mineral content increases, the AE ringing counts of metagabbro exhibit an increasing trend in the high-energy (1e6–+∞ aJ) and high-amplitude (90–100 dB) intervals. With the development of feldspar minerals, the fracture mode of metagabbro gradually changed from shear failure to tensile failure. The higher the development of felsic minerals, the higher the stress level corresponding to the maximum fractal dimension, the greater the energy released by rock failure, and the more severe the damage. This study is of great significance for revealing the mechanism of rock rupture.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Rock Mechanics and Modeling · Structural Response to Dynamic Loads · Landslides and related hazards
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
China Coal Research Institute 1 , Beijing 100013, China
Beijing China Coal Mine Engineering Company Limited 2 , Beijing 100013, China
National Engineering Research Center of Deep Shaft Construction 3 , Beijing 100013, China
Institute of Defense Engineering, AMS, PLA 4 , Beijing 100036, China
Beijing Key Laboratory of Urban Underground Space Engineering, University of Science and Technology Beijing 5 , Beijing 100083, China
Shaanxi Yanchang Petroleum Yulin Kekegai Coal Industry Company Limited 6 , Yulin 719000, China
Funding
National Natural Science Foundation of China · Major Scientific and Technological Innovation Project of Shandong Province · Tiandi Technology Co., Ltd. Innovation and Entrepreneurship Fund Project
References (35)
Show source-provided references
1. Influence of grain size heterogeneity on strength and microcracking behavior of crystalline rocks10.1002/2016jb013469 ↗
2. Mechanical properties of brittle rock governed by micro-geometric heterogeneity10.1016/j.compgeo.2017.11.013 ↗
3. An experimental investigation on tensile fracturing of brittle rocks by considering the effect of grain size and mineralogical composition10.1016/j.ijrmms.2020.104570 ↗
4. Grain-based discrete element method (GB-DEM) modelling of multi-scale fracturing in rocks under dynamic loading10.1007/s00603-018-1566-2 ↗
5. A bonded-particle model for rock10.1016/j.ijrmms.2004.09.011 ↗
6. An equivalent crystal model for mesoscopic behaviour of rock10.13722/j.cnki.jrme.2015.03.008 ↗
7. Mechanical behavior of granite with different grain sizes after high-temperature treatment by particle flow simulation10.1007/s00603-019-02005-1 ↗
8. Research on mechanical properties of heterogeneous rocks using grain-based model under uniaxial compression10.11779/CJGE202003016 ↗
9. Comprehensive early warning method of microseismic, acoustic emission, and electromagnetic radiation signals of rock burst based on deep learning10.1016/j.ijrmms.2023.105519 ↗
10. Long-term mechanical and acoustic emission characteristics of creep in deeply buried jinping marble considering excavation disturbance10.1016/j.ijrmms.2020.104603 ↗
11. Extracting and predicting rock mechanical behavior based on microseismic spatio-temporal response in an ultra-thick coal seam mine10.1007/s00603-023-03247-w ↗
12. Accurate prediction of indicators for engineering failures in complex mining environments10.1016/j.engfailanal.2023.107736 ↗
13. Characteristics of fractal and percolation of rocks subjected to uniaxial compression during their failure process
14. Study of acoustic emission and fractal characteristics of soft and hard coal samples with same group10.13722/j.cnki.jrme.2014.s2.013 ↗
15. True-triaxial experimental study of the evolutionary features of the acoustic emissions and sounds of rockburst processes10.1007/s00603-017-1344-6 ↗
16. Evaluation of internal microcrack evolution in red sandstone based on time-frequency domain characteristics of acoustic emission signals10.1016/j.conbuildmat.2020.120435 ↗
17. Precursor information study on acoustic emission characteristics of marble under uniaxial cyclic loading-unloading10.13225/j.cnki.jccs.2016.0345 ↗
18. Study on the acoustic emission characteristics of non-uniform deformation evolution of granite under cyclic loading and unloading test10.16285/j.rsm.2018.0048 ↗
19. Acoustic emission, fractal and chaos characters in rock stress-strain procedure10.16285/j.rsm.2010.08.048 ↗
20. Energy damage evolution mechanism of rock and its application to brittleness evaluation10.1007/s00603-018-1681-0 ↗
21. Mechanical properties and acoustic emission characteristics of the bedrock of a hydropower station under cyclic triaxial loading10.1007/s00603-020-02218-9 ↗
22. Effect of grain size on fractal structure of acoustic emission hypocenter distribution in granitic rock10.1016/0031-9201(91)90070-x ↗
23. Fractal analysis on the spatial distribution of acoustic emission in the failure process of rock specimens10.1016/S1674-4799(09)60004-2 ↗
24. Fractal analysis of the characteristics of acoustic emission of rock
25. Study on strength fractal features of acoustic emission in process of rock failure
26. Comparison of high-frequency components in acoustic emissions from rock fracture under Mode I and Mode II dominated loading10.1016/j.ijrmms.2023.105554 ↗
27. Experimental study on acoustic emission (AE) characteristics and crack classification during rock fracture in several basic lab tests10.1016/j.ijrmms.2020.104411 ↗
28. Fracturing and AE characteristics of matrix-inclusion rock types under dynamic Brazilian testing10.1016/j.ijrmms.2022.105164 ↗
29. Measuring the strangeness of strange attractors10.1016/0167-2789(83)90298-1 ↗
30. Fractal characteristics and damage evaluation of corroded beams under four-point bending tests based on acoustic emission techniques10.1016/j.measurement.2022.111792 ↗
31. Experimental investigation on the influence on mechanical properties and acoustic emission characteristics of granite after heating and water-cooling cycles10.1007/s40948-023-00627-y ↗
32. Acoustic emission and micro-rupture characteristics of rocks under Brazilian splitting load10.13374/j.issn2095-9389.2018.11.29.005 ↗
33. Correlational fractal characterisation of stress and acoustic emission during coal and rock failure under multilevel dynamic loading10.1016/j.ijrmms.2019.03.002 ↗
34. Use of correlation fractal dimension signatures for understanding the overlying strata dynamics in longwall coal mines10.1016/j.ijrmms.2016.11.019 ↗
35. The role of prior creep duration on the acoustic emission characteristics of rock salt under cyclic loading10.1016/j.ijrmms.2022.105166 ↗