Results 11 to 20 of about 4,148 (210)

Investigation of Pressure Relief Borehole Effects Using In Situ Testing Based on Distributed Optical Fibre Sensing Technology

open access: yesAdvances in Civil Engineering, 2021
Borehole pressure relief method is one of the most effective ways of rock burst prevention in coal mines. The measured results of borehole pressure relief at no. 8939 longwall face in Xinzhouyao coal mine, China, are presented here. The analyses identify
Yunpeng Li   +5 more
doaj   +1 more source

Study on Catastrophe Information Characteristics of Strain-Structural Plane Slip Rockburst in Deep Tunnels

open access: yesApplied Sciences, 2023
Rigid structural planes encountered during construction have an obvious influence on rockburst intensity and occurrence mechanism. The high-intensity rockburst induced by the structural plane poses a great threat to the safety construction of the tunnel.
Jiaqi Guo   +4 more
doaj   +1 more source

Decision Tree Model for Rockburst Prediction Based on Microseismic Monitoring

open access: yesAdvances in Civil Engineering, 2021
Rockburst is an extremely complex dynamic instability phenomenon for rock underground excavation. It is difficult to predict and evaluate the rank level of rockburst in practice.
Hongbo Zhao, Bingrui Chen, Changxing Zhu
doaj   +1 more source

State of the art review of the risk assessment and early warning methods for fault-slip rockburst

open access: yes矿业科学学报, 2022
Underground engineering generally needs to pass through a significant number of geological structure areas, which can easily induce fault-slip rockburst, threatening the engineering structure's stability.For revealing the mechanism of disaster causing of
Gao Ansen, Qi Chengzhi, Shan Renliang
doaj   +1 more source

Geodetic and seismological observations applied for investigation of subsidence formation in the CSM Mine (Czech Republic) [PDF]

open access: yes, 2018
Purpose. Undermined areas are affected by the creation of subsidence depressions due to long-term underground mining. In general, different geodetic methods are applied to obtain further information needed to determine the spatial development of the ...
Kajzar, V
core   +1 more source

Rupture by damage accumulation in rocks [PDF]

open access: yes, 2006
The deformation of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage and its spatial localization lead to the creation of a macroscale discontinuity, so-called "fault" in geological terms, and to the
A Buchel   +64 more
core   +4 more sources

Analysis and Engineering Practice of Factors Affecting Top-Coal Recovery in a Large Dip Coal Seam

open access: yesAdvances 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

Experimental studies on the shear resistance of original coal-shale joint [PDF]

open access: yes, 2017
Purpose. Experimental study and theoretical modeling of the shear resistance of original coal-shale joint. Methods. A two-segment model was developed to describe the shear resistance-shear displacement curves obtained from the direct shear tests of ...
Dong, H, Guo, B, Wang, L
core   +2 more sources

Combined prediction of rockburst based on multiple factors and stacking ensemble algorithm

open access: yesUnderground Space, 2023
Rockburst is a kind of common geological disaster in deep tunnel engineering. It has the characteristics of causing great harm and occurring at random locations and times.
Hu Luo   +6 more
doaj   +1 more source

Rockburst Intensity Level Prediction Method Based on FA-SSA-PNN Model

open access: yesEnergies, 2022
To accurately and reliably predict the occurrence of rockburst disasters, a rockburst intensity level prediction model based on FA-SSA-PNN is proposed. Crding to the internal and external factors of rockburst occurrence, six rockburst influencing factors
Gang Xu   +4 more
doaj   +1 more source

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