Results 31 to 40 of about 845,218 (299)

Estimation of Rock Burst Grades Using Rock Mass Strength

, 2020
The traditional rock burst estimation method is usually based on the σc (rock strength) in practice, while the actual occurrence of rock burst depends more on the structure and strength of the rock mass. In this work, the actual rock bursts occurred in a
Chuanjiang Zhong, Jinming Xu, Yalei Wang, Junshuai Xu   +3 more
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Particle Flow Analysis of Acoustic Emission Features of Rock under Rock Burst Stress Path

, 2022
The AE (acoustic emission) features could reflect the process of fracture initiation and propagation in rocks. Taking Lalin railway tunnel granite as an example, a three-dimensional particle flow numerical model of rock was established based on the PFC ...
Jinming Xu, Yalei Wang
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Analysis and evaluation of essential factors for rock burst mechanism

矿业科学学报, 2021
This paper puts forward the energy characteristics and mechanism elements of rock burst, and preliminarily establishes the evaluation index and system of roadway rock burst mechanism ("3 + 4" index system).The main criterion layer of the system is the ...
Ma Nianjie, Zhang Wenlong, Li Jun, Lian Xiaoyong, Ren Jianjü   +4 more
doaj   +1 more source

Quantitative Assessment Method Of Rock Burst [PDF]

Advances in Computer Science Research, 2015
Rock burst is one of the three big power disasters in deep mining environment and its quantities assessment method study is a hotspot issue. The analytical mode and method is set up for analysis of rock burst quantitative assessment in Deep Mining environment stress in this paper.
Kai-zhong Huang, Quan-sheng Liu, Xing-xin Peng, Bin Liu   +3 more
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Ultrasonic and CT scanning analysis of coal-rock mass under the primary bedding structure

Meitan kexue jishu
In order to study the influence of the primary bedding structure on wave velocity and mechanical properties of coal-rock mass, multilayer and multi-directional ultrasonic and CT scanning tests were carried out in laboratory.
Guorong LEI, Chunyuan LI, Qingxin QI, Jiamin WANG, Weisheng DU, Xiangshang LI, Tuan HE   +6 more
doaj   +1 more source

Experimental and numerical study on rock burst triggering mechanism via spatiotemporal evolution of stress flow

Meitan kexue jishu
To address the prevention and control of rock burst disasters in deep coal mines, this study focuses on the spatiotemporal evolution mechanism of mining-induced stress, introducing the novel concept of “stress flow” to characterize dynamic stress ...
Chi LIU, Xingyu JIANG, Haitao LI, Pengyu MU, Huaguang LIU, Honghui YUAN, Qingxin QI, Shouguang WANG   +7 more
doaj   +1 more source

CFD Simulation of Temperature Variation in Carboniferous Rock Strata During UCG

Journal of Sustainable Mining, 2013
The numerical simulation was based on the computational fluid dynamics formalism in order to identify the change of temperature in rock strata during underground coal gasification (UCG).
Tomasz Janoszek, Anna Sygała, Mirosława Bukowska   +2 more
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High Temperature Versus Geomechanical Parameters of Selected Rocks – The Present State of Research

Journal of Sustainable Mining, 2013
This paper presents the current state of knowledge concerning the examination of the impact of increased temperatures on changes of geomechanical properties of rocks.
Anna Sygała, Mirosława Bukowska, Tomasz Janoszek   +2 more
doaj   +1 more source

Rock Burst Intensity Classification Prediction Model Based on a Bayesian Hyperparameter Optimization Support Vector Machine

Mathematics, 2022
Rock burst disasters occurring in underground high-stress rock mass mining and excavation engineering seriously threaten the safety of workers and hinders the progress of engineering construction.
Shaohong Yan, Yanbo Zhang, Xiangxin Liu, Runze Liu   +3 more
doaj   +1 more source

Rock-Burst Occurrence Prediction Based on Optimized Naïve Bayes Models [PDF]

, 2021
Rock-burst is a common failure in hard rock related projects in civil and mining construction and therefore, proper classification and prediction of this phenomenon is of interest.
Skentou, Athanasia, Mamou, Anna, Athanasia D. Skentou, Danial Jahed Armaghani, Ke, Bo, Asteris, Panagiotis, Manoj Khandelwal, Bo Ke, Armaghani, Danial, Panagiotis G. Asteris, Anna Mamou, Khandelwal, Manoj   +11 more
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