Results 21 to 30 of about 504 (182)

Rockburst mechanism research and its control

International Journal of Mining Science and Technology, 2018
A new rockburst classification, innovative works in developing a “strainburst test machine” and an “impact-induced rockburst test machine” that can reproduce rockbursts in laboratory were researched. New concepts were proposed regarding the stress paths that take into account both the static and dynamic stresses analogous to that at excavation ...
Manchao He, Fuqiang Ren, Dongqiao Liu
openaire   +2 more sources

Research on the Nucleation Mechanism and Early Warning Method of Strain Rockburst in Deep-Buried Tunnel Based on Microseismic Monitoring

Lithosphere, 2022
In order to discuss the nucleation mechanism of strain rockburst, this paper takes the rockburst section of deep diversion tunnel of Jinping Hydropower Project of Yalong River as the research object.
Qun Yu, Chunyan Bao, Shengji Jin, Junxiang Wang   +3 more
doaj   +1 more source

Rockburst Precursors and the Dynamic Failure Mechanism of the Deep Tunnel: A Review

Energies, 2021
With the rapid development of underground caverns in the fields of hydraulic engineering, mining, railway and highway, the frequency, and intensity of rockburst and dynamic instability have gradually increased, which has become a bottleneck restricting ...
Yulong Chen, Junwen Zhang, Jiahao Zhang, Bin Xu, Luji Zhang, Wenxin Li   +5 more
doaj   +1 more source

Prediction and Evaluation of Rockburst Based on Depth Neural Network

Advances in Civil Engineering, 2021
The formation mechanism of rockburst is complex, and its prediction has always been a difficult problem in engineering. According to the tunnel engineering data, a three-dimensional discrete element numerical model is established to analyze the initial ...
Jin Zhang, Mengxue Wang, Chuanhao Xi
doaj   +1 more source

Energy Action Mechanism of Coal and Gas Outburst Induced by Rockburst [PDF]

Shock and Vibration, 2021
The essence of both rockburst and coal and gas outburst lies in fast energy release. In order to explore the energy action mechanism of coal and gas outburst induced by rockburst in rockburst and coal and gas outburst combined mines, the split Hopkinson pressure bar (SHPB) experimental device was firstly used to conduct uniaxial impact failure test of ...
Wenqing Zhang, Chaomin Mu, Dengke Xu, Zhongqing Li   +3 more
openaire   +2 more sources

Study on Combined Energy Absorption Support for Rockburst Disaster Control in Tunnelling

Shock and Vibration, 2021
In order to better realize the rockburst disaster control mechanism and approach, the rockburst response of concrete blocks with different energy absorption levels under different energy storage conditions was observed and analyzed by loading tests.
Liang Kuang, Gang Wang, Wenge Qiu, Lun Gong, Zhiqiang Feng, Tianhui Ma   +5 more
doaj   +1 more source

Study on Mechanism and Main Influencing Factors of Rockburst under Complex Conditions of Hard and Deep Overburden

Shock and Vibration, 2023
Xinzhuang Coal Mine is a typical kilometer-deep rockburst mine in the Ningzheng mining area of China Huaneng Group, which is still in the capital construction period.
Ma Xingen, Pan Jun, Zou Qinghai, Li Yongyuan, Feng Fan, Wang Huifeng, Ye Xiangping, Gong Yongchun, Mou Biao   +8 more
doaj   +1 more source

Characteristics of Ground Pressure Disaster and Rockburst Proneness in Deep Gold Mine

Lithosphere, 2023
To obtain rockburst characteristics at rock engineering, the rockburst event, in situ stress characteristics, and rockburst proneness are studied in a deep gold mine. The severity of rockburst increases with cover depth at the mine. The main locations of
Peng Xiao, Huanxin Liu, Guoyan Zhao
doaj   +1 more source

Experimental study on the effect of water absorption level on rockburst occurrence of sandstone

Journal of Rock Mechanics and Geotechnical Engineering
To investigate the mechanism of rockburst prevention by spraying water onto the surrounding rocks, 15 experiments are performed considering different water absorption levels on a single face.
Dongqiao Liu, Jie Sun, Pengfei He, Manchao He, Binghao Cao, Yuanyuan Yang   +5 more
doaj   +1 more source

Research on Stress Characteristics of Rockburst in Over-Length Deep-Buried Tunnel

Buildings
As a unique geological hazard in a high-geo-stress environment, rockburst happens with strong suddenness, randomness, and destructiveness, but the mechanism of its occurrence in a deep-buried tunnel in a high-geo-stress environment needs further study ...
Chun Luo, Shishu Zhang, Bihua Tang, Jun Chen, Chonglin Yin, Huayun Li   +5 more
doaj   +1 more source