Results 21 to 30 of about 597 (189)

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   +2 more sources

Practices on rockburst prevention and control in headrace tunnels of Jinping II hydropower station

Journal of Rock Mechanics and Geotechnical Engineering, 2012
Rockburst problems induced by high in-situ stresses were prominent during construction of the headrace tunnels of Jinping II hydropower station. The rockbursts occurred in various forms, and it is necessary to take pertinent measures for integrated ...
Wang, Jimin, Zeng, Xionghui, Zhou, Jifang   +2 more
exaly   +2 more sources

Study on static expansive fracturing for pressure relief and rockburst prevention in coal seam boreholes. [PDF]

Sci Rep
Abstract Addressing the insufficient pressure relief in the deep coal mass and the deterioration of the surrounding rock bearing structure due to increased borehole diameter in conventional borehole pressure relief techniques, a static expansive fracturing method for pressure relief in coal seam boreholes is proposed.
Lyu W, Zhou X, Ouyang Z, Wu Y, Xie P, You R, Yi H, Liu J, Zhang N.   +8 more
europepmc   +4 more sources

Effect of the Initial Support of the Tunnel on the Characteristics of Rockburst: Case Study and Mechanism Analysis

Advances in Civil Engineering, 2022
Rockburst is still a stubborn disease in the field of engineering geology. The present research pays more attention to the influence of geological conditions on rockburst and less to the influence of type and stiffness of engineering support on rockburst.
Chunchi Ma, Junqi Fan, Xiang Ji, Xiaoyan Shi, Jun Zeng   +4 more
doaj   +2 more sources

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   +3 more sources

Research on Temporal and Spatial Distribution Characteristics of Microseismic Events of Slip-Type Rockburst

Shock and Vibration, 2022
Based on the microseismic monitoring data of underground cavern of Shuangjiangkou Hydropower Station, the internal relationship between rockburst and microseismic events is analyzed and the occurrence mechanism of slip-type rockburst in underground ...
Kun Xu, Leibo Song, Wenjie Song, Jiangtao He, Liping Li, Ge Yan, Qin Chen, Gang Wang   +7 more
doaj   +2 more sources

Rockburst in Sandstone Containing Elliptic Holes with Varying Axial Ratios

Advances in Materials Science and Engineering, 2019
Rockburst disaster is one of the prominent problems faced by deep underground engineering. In this study, rockburst in four elliptical holes with different axial ratios in sandstone under biaxial loading is studied as an analogue for underground roadways.
Yang Wang, Manchao He, Dongqiao Liu, Yubing Gao   +3 more
doaj   +2 more sources

The effect of selected rockburst prevention measures on seismic activity – Case study from the Rudna copper mine

Journal of Sustainable Mining, 2018
In order to face threats from mining tremors a number of organizational and technical prevention methods are applied in underground mines. Unfortunately, most of these methods are based on the experience of crew and there is uncertainty whether in ...
Krzysztof Fuławka, Witold Pytel, Piotr Mertuszka   +2 more
exaly   +2 more sources

Effects of torpedo blasting on rockburst prevention during deep coal seam mining in the Upper Silesian Coal Basin

Journal of Rock Mechanics and Geotechnical Engineering, 2017
In the Upper Silesian Coal Basin (USCB), coal seams are exploited under progressively more difficult geological and mining conditions (greater depth, higher horizontal stress, more frequent occurrence of competent rock layers, etc.).
Łukasz Wojtecki
exaly   +2 more sources

Mechanism of Vibration Energy Action on Dynamic Instability of Shock-Type Rockburst Carrier System

Shock and Vibration, 2020
In coal mining, the rockburst intensity triggered by the mine earthquake is often greater in the mining area, and the precursor information is more difficult to capture.
Lyu Pengfei, Cui Xuekai
doaj   +2 more sources