Results 51 to 60 of about 1,187 (218)

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

Geophysical Evaluation of Effectiveness of Blasting for Roof Caving During Longwall Mining of Coal Seam [PDF]

, 2020
Deep longwall mining of coal seams is made in the Upper Silesian Coal Basin (USCB) under complicated and mostly unfavourable geological and mining conditions. Usually, it is correlated with rockburst hazard mostly at a high level.
Gołda, Iwona, Konicek, Petr, Mendecki, Maciej J., Wojtecki, Łukasz, Zuberek, Wacław M.   +4 more
core   +1 more source

A new in situ test for the assessment of the rock-burst alarm threshold during tunnelling [PDF]

, 2023
Rock-burst is one of the most serious risks associated with hard rock tunnelling and mining at high depths. Monitoring of acoustic emissions emitted by the rock-mass during excavation and their interpretation now permits the early assessment of failure ...
A. Voza, D. Boldini, G. Ascari, L. Valguarnera, R. Marrazzo   +4 more
core   +1 more source

A study of the characteristics and influence mechanism of time delayed rockburst in a TBM tunnel under the blasting disturbance

Shuiwen dizhi gongcheng dizhi, 2023
The occurrence of time delayed rockburst usually has strong randomness and will pose a great threat to construction safety. Excavation disturbance and blasting disturbance will have impact of varying degrees on the potential time delayed rockburst area ...
Yongwei QUAN, Jun WANG, Yongrun XIONG, Zhibin YAO, Yu ZHANG, Lei HU   +5 more
doaj   +1 more source

Methodology of research in the fight against rockbursts at the Provence colliery [PDF]

, 1993
International audienceA research program has been carried out at INERIS aiming to quantify rockburst potential at the Provence colliery. As a part of the research, numerical modeling of fractured rock mass has been undertaken, using the three-dimensional
Ben Slimane, Karim, Bigarre, Pascal, Guillaume, Marion, Josien, Jean-Pierre   +3 more
core   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Prediction and prevention of rockburst in metal mines – A case study of Sanshandao gold mine

Journal of Rock Mechanics and Geotechnical Engineering, 2016
Rockburst is a kind of artificial earthquake induced by human activities, such as mining excavations. The mechanism of rockburst induced by mining disturbance is revealed in terms of energy in this context.
Meifeng Cai
doaj   +1 more source

Optimization of Rockburst Risk Control Measures for Deeply Buried TBM Tunnels: A Case Study

Buildings, 2023
Choosing reasonable control measures for different intensity rockburst risks not only effectively prevents and mitigates rockburst risks but also reduces time and engineering investment costs.
Pengxiang Li, Jinshuai Zhao, Wankui Bu, Wenjing Niu, Pinpin Liu, Minghong Sun   +5 more
doaj   +1 more source

Rockburst prevention by microwave destressing: a numerical investigation

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
AbstractRockbursts are a complex phenomenon characterized by a violent ejection of rock fragments from the free face of deep underground mines. Due to the sudden, disruptive, and complex nature of these events, accurate predictions of rockbursts are difficult.
Chun Yang, Keping Zhou, Quan Zhang, Manchao He, Feng Gao, Xin Xiong, Zhu Pan, Ameen Topa   +7 more
openaire   +2 more sources

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

Deep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan, Haijiang Li, Hongqiang Xie, Mingli Xiao, Jianliang Pei, Huaizhong Liu, Jiangda He   +6 more
wiley   +1 more source