Results 41 to 50 of about 597 (189)

Heavy rockbursts due to longwall mining near protective pillars: A case study

International Journal of Mining Science and Technology, 2018
Rockburst represents a very dangerous phenomenon in deep underground mining in unfavourable conditions such as great depth, high horizontal stress, proximity of important tectonic structures, and unmined pillars. The case study describes a recorded heavy
Petr Konicek, Jan Schreiber
doaj   +1 more source

Study on the Mechanisms of Rock Mass Watering for Rockburst Prevention in Phosphorite Mines from Laboratory Results

, 2023
Owing to the continuous increase in mining depth, Yichang phosphorite mines in China have entered the field of deep mining. The frequency of rockburst disasters is increasing.
Zhen Zhang, Qihu Wang, Wen Li, Meng Wu, Yicheng Ye, Yan Li   +5 more
core   +1 more source

The Mechanical Criterion of Activation and Instability of Normal Fault Induced by the Movement of Key Stratum and Its Disaster-Causing Mechanism of Rockburst in the Hanging Wall Mining

Advances in Civil Engineering, 2021
Coal mine rockburst is closely related to the complex geological structure. Understanding the criterion of the fault activation instability and the disaster-causing mechanism of rockburst under the influence of mining is the theoretical premise and ...
Lyu Pengfei, Lu Jiabin, Wang Eryu, Chen Xuehua   +3 more
doaj   +1 more source

The Mechanism and Application of Deep-Hole Precracking Blasting on Rockburst Prevention [PDF]

Shock and Vibration, 2015
The mechanism of preventing rockburst through deep-hole precracking blasting was studied based on experimental test, numerical simulation, and field testing. The study results indicate that the deep-hole precracking could change the bursting proneness and stress state of coal-rock mass, thereby preventing the occurrence of rockburst.
Zhenhua Ouyang, Qingxin Qi, Shankun Zhao, Baoyang Wu, Ningbo Zhang   +4 more
openaire   +2 more sources

Experimental study on revealing the mechanism of rockburst prevention by drilling pressure relief: status-of-the-art and prospects

Geomatics, Natural Hazards & Risk, 2022
High stress caused by excavation is an inevitable part of deep underground rock mass engineering or mining process, which is the key to induce disasters such as rockbursts.
Fengqiang Gong, Zhichao He, Xuefeng Si
doaj   +1 more source

Energy Accumulation and Dissipation of Coal with Preopening under Uniaxial Loading

Shock and Vibration, 2021
Energy accumulation and dissipation play an important role during the entire process of rock failure. Some flaws, such as preexisting holes, will influence energy accumulation and dissipation. In order to investigate the energy evolution of coal specimen
Xin Wei, Hao Hu, Yang Li
doaj   +1 more source

Intelligent assessment method for rockburst hazard areas based on image recognition technology

Gong-kuang zidonghua, 2023
In traditional rockburst hazard assessment methods, there are problems of large computational complexity and low precision in dividing hazardous areas. In order to meet the development needs of intelligent and visual prevention and control of rockburst ...
HAN Gang, XIE Jiahao, QIN Xiwen, WANG Xing, HAO Xiaoqi   +4 more
doaj   +1 more source

Ensemble stacking rockburst prediction model based on Yeo–Johnson, K-means SMOTE, and optimal rockburst feature dimension determination

Scientific Reports, 2022
Rockburst forecasting plays a crucial role in prevention and control of rockburst disaster. To improve the accuracy of rockburst prediction at the data structure and algorithm levels, the Yeo–Johnson transform, K-means SMOTE oversampling, and optimal ...
Lijun Sun, Nanyan Hu, Yicheng Ye, Wenkan Tan, Menglong Wu, Xianhua Wang, Zhaoyun Huang   +6 more
doaj   +1 more source

Digital rock mechanics solutions for underground engineering problems such as coal mining

Meitan kexue jishu
The observability of underground engineering, such as coal mining, is extremely limited, which makes it difficult to obtain reliable pre-analysis basis for many complex engineering problems. Especially in face of new engineering environment brought about
Haitao LI, Qingxin QI, Weisheng DU, Haikuan ZHANG, Guanyu YANG, Shouguang WANG, Xiaoshan SHI, Chunyuan LI, Chunyang CUI, Weiyu ZHENG, Jianwei ZHENG, Tuan HE, Wei ZHU   +12 more
doaj   +1 more source

Characteristics of rockburst and early warning of microseismic monitoring at qinling water tunnel

Geomatics, Natural Hazards & Risk, 2022
In-depth records of the geological and rockburst data during the construction of the Qinling Water Tunnel of the Han to the Wei River project, analysis of the initial stress field distribution rules of the rock mass within a buried depth of 700 m ...
Tianhui Ma, Daoyuan Lin, Liexian Tang, Limin Li, Chun’an Tang, Kedar Prasad Yadav, Wendong Jin   +6 more
doaj   +1 more source