Results 11 to 20 of about 2,851 (220)

Study of Gob-Side Entry Retaining Technology with Roof Cutting under Upper Roadway Condition

Shock and Vibration, 2021
Gob-side entry retaining technology with roof cutting (GERRC) has been widely used in flat and near-flat coal seam conditions, but its application under inclined coal seam is still very deficient.
Xingen Ma, Manchao He, Xuewei Sun, Jianfeng Li, Gang He, Enze Zhen   +5 more
doaj   +1 more source

Research on Multifactor Analysis and Quantitative Evaluation Method of Rockburst Risk in Coal Mines

Lithosphere, 2022
The prevention of rockbursts is significant to ensure mining safety in deep coal mines. The multifactor analysis and a new quantitative evaluation method for rockbursts in coal mines are proposed in this study.
Weisheng Du, Haitao Li, Qingxin Qi, Weiyu Zheng, Sensen Yang   +4 more
doaj   +1 more source

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

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

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

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

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

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

Investigation on the pore characteristics of coal specimens with bursting proneness [PDF]

Scientific Reports, 2019
AbstractTo achieve further insight into the pore characteristics, the coal specimens with different bursting proneness before and after uniaxial compression failure are tested and compared in this paper. The data of mercury intrusion test is corrected by that of low-temperature nitrogen adsorption and desorption test (LTNAD). The pore size distribution
Li, Yutao, Jiang, Yaodong, Zhang, Bo, Song, Honghua, Dong, Wenbo, Wang, Pengpeng   +5 more
openaire   +2 more sources