Results 11 to 20 of about 69,019 (276)

A Prediction Method of Coal Burst Based on Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation

Frontiers in Earth Science, 2022
Coal burst has become a worldwide problem that needs to be solved urgently for the sake of coal mine safety production due to its complicated triggering mechanisms and numerous influencing factors.
Zhijie Zhu, Zhijie Zhu, Yunlong Wu, Jun Han   +3 more
doaj   +3 more sources

Width design for gobs and isolated coal pillars based on overall burst-instability prevention in coal mines

Journal of Rock Mechanics and Geotechnical Engineering, 2016
An investigation was conducted on the overall burst-instability of isolated coal pillars by means of the possibility index diagnosis method (PIDM). First, the abutment pressure calculation model of the gob in side direction was established to derive the ...
Junfei Zhang, Fuxing Jiang, Sitao Zhu, Lei Zhang   +3 more
doaj   +3 more sources

Study on mechanical properties and damage characteristics of granite under thermal shock based on CT scanning

Meitan kexue jishu, 2023
During the exploitation of deep geothermal resources, the thermal fractures of high-temperature rocks are usually induced by the impact of low-temperature fluids to improve the permeability of reservoir rocks.
Jiamin WANG, Shouguang WANG, Xiangshang LI, Mohua BU, Zhaolong LUAN, Peng ZHANG   +5 more
doaj   +1 more source

Research on the type and occurrence mechanism and prevention of coal pillar rockbursts

Meitan kexue jishu, 2023
Coal pillar rockburst is a typical type of rockburst occurring in coal mining in China in recent years. How to summarize the engineering scale damage characteristics of coal pillar rockburst, reveal the mechanism of rockburst instability and formulate ...
Xiufeng ZHANG, Yang CHEN
doaj   +1 more source

An Integration Method of Bursting Strain Energy and Seismic Velocity Tomography for Coal Burst Hazard Assessment

Lithosphere, 2022
The occurrence of coal burst in underground coal mines is complex, abrupt, and diverse, and the evaluation and prediction of coal burst hazard is the premise of effective prevention and control of coal burst.
Jinzheng Bai, Linming Dou, Wu Cai, Siyuan Gong, Wei Shen, Xinyuan Tian, Hongjun Ma   +6 more
doaj   +1 more source

Study on the Support System Mechanism of Entry Roof with Roof Cutting Pressure Releasing Gob-Side Entry Retaining Technology

Advances in Civil Engineering, 2022
To improve the technical system of the roof cutting pressure releasing gob-side entry retaining technology (RCPRGERT) and provide reference for the adaptive promotion and optimization of the new technology, the entry support system mechanism with ...
Xingen Ma, Guihe Li, Haitao Cao, Haijun Wang, Xiangyuan Shi, Qingquan Zhao, Zhengcan Han, Tianyi Zhang, Weiping Dai, Jiangling Zhang   +9 more
doaj   +1 more source

Mechanism and Control of Rockburst Induced by Draining Spatial Islands and Squaring

Geofluids, 2022
A small-pillar gob-side roadway showed rockburst appearance during the mining of a gob-side working face located in the Shaanxi-Inner Mongolia mining area.
Yunhai Cheng, Fenghui Li, Xiufeng Zhang, Gangwei Li, Le Xu   +4 more
doaj   +1 more source

Experimental studies on the shear resistance of original coal-shale joint [PDF]

, 2017
Purpose. Experimental study and theoretical modeling of the shear resistance of original coal-shale joint. Methods. A two-segment model was developed to describe the shear resistance-shear displacement curves obtained from the direct shear tests of ...
Dong, H, Guo, B, Wang, L
core   +2 more sources

Investigations into the failure mechanisms of coal bursts based on a real burst event in the Tangshan coal mine

Frontiers in Earth Science, 2023
To investigate the failure mechanisms of coal bursts in the longwalls of underground coal mines, a case study based on the real coal burst in the Tangshan coal mine occurring on 2 August 2019 was carried out to analyze the cause and basic theories of the coal burst and, thus, propose approaches and methods to mitigate the damage.
Dongxu Jia, Zhan Zhi, Chen Cao, Ming Zhang   +3 more
openaire   +2 more sources

Influence of Cyclic Impact Loading and Axial Stress on Dynamic Mechanical Properties of Burst-Prone Coal

Shock and Vibration, 2021
High in-situ stress and frequent dynamic disturbances caused by the mining process in deep coal mines can easily induce dynamic disasters such as coal burst.
Shuang Gong, Zhen Wang, Lei Zhou, Wen Wang   +3 more
doaj   +1 more source