Results 21 to 30 of about 845,218 (299)
Research on the type and occurrence mechanism and prevention of coal pillar rockbursts
Meitan kexue jishu, 2023 Coal pillar rockburst is a typical type of rockburst occurring in coal mining in China in recent years. How to summarize the engineering scale damage characteristics of coal pillar rockburst, reveal the mechanism of rockburst instability and formulate ...
Xiufeng ZHANG, Yang CHEN
doaj +1 more source
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
doaj +1 more source
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
doaj +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 ...
D. Boldini +4 more
core +1 more source
, 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
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
, 2022 According to the universal law of thermodynamics, the failure of any substance is closely related to its energy change. Understanding the strain energy and rock burst tendency of rock or coal under different loading rates is critical in many geological ...
Jingang Li, Jiang Hu
core +1 more source
Energy sources of rock burst and the influence of the surrounding rock mass
, 2023 The kinetic energy for rock ejection in a rock burst event is converted from the strain energy stored in the burst rock, a portion of strain energy released from the surrounding rock mass and a portion of seismic energy transferred from fault-slip ...
Charlie C Li (20179422)
core +1 more source
Cost-based burst dropping strategy in optical burst switching networks [PDF]
, 2005 Optical burst switching (OBS) is a new paradigm for future all-optical networks. Intentional burst dropping is one of techniques used to achieve desired quality of service. In this paper we note that some bursts are more likely to cause contention.
Barry, Liam P. +5 more
core +2 more sources