Results 31 to 40 of about 8,180 (295)
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 +4 more
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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 +5 more
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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 ...
D. Boldini +4 more
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, 2022 The thermomechanical (TM) coupling effects of rock bursts have attracted considerable attention from researchers owing to the high geothermal and geostresses in deep tunnels in regions such as Western China.
Meiben Gao +4 more
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Study on the Mechanism of Gas Ignition by Friction Effect of Hard Quartz Sandstone Instability
Geofluids, 2020 When the upper part of a high gas coal seam has hard and thick sandstone roof, the gas explosion accident in goaf is even caused by roof collapse. Taking the mining of 1007 working face of 10 coal seam under Xia KuoTan Coal Mine as the engineering ...
Li Fuqiang +5 more
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Analysis and Engineering Practice of Factors Affecting Top-Coal Recovery in a Large Dip Coal Seam
Advances in Civil Engineering, 2022 The recovery of top coal in the caving face directly impacts the efficiency of mining coal resources. The geological conditions and mining parameters are well known to be significant influences on the recovery of top coal. This study focused on the 9-301
Xinglong Huang +11 more
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Sliding Impact Mechanism of Square Roadway Based on Complex Function Theory
Shock and Vibration, 2021 To clarify the process of stress change and plastic zone evolution of square roadways under high-stress conditions, the rotational square expansion plastic zone evolution model of square roadway was established by theoretical analysis, numerical ...
Decheng Ge +7 more
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Risk identification formula for coal burst occurrence and its application
Meitan xuebao, 2023 Aiming at the problem that the traditional discrimination method of rock burst generation lacks the consideration of the whole disaster process and has some defects, taking the decomposition of the physical process of coal mine rock burst generation as ...
Junfeng PAN +3 more
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Shattering Rock with Intense Bursts of Energetic Electrons [PDF]
IEEE Transactions on Nuclear Science, 1973 It has been successfully demonstrated that intense bursts of energetic electrons cause significant rock spalling for modest energy inputs. The corresponding temperature rise per pulse in the bombarded volume of rock is only ~ 200° C, or so. Some analytical predictions and experimental evidence of this novel accelerator application are presented.
Avery, Robert T. +3 more
openaire +2 more sources
Particle Flow Analysis of Acoustic Emission Features of Rock under Rock Burst Stress Path
, 2022 The AE (acoustic emission) features could reflect the process of fracture initiation and propagation in rocks. Taking Lalin railway tunnel granite as an example, a three-dimensional particle flow numerical model of rock was established based on the PFC ...
Jinming Xu, Yalei Wang
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