Results 21 to 30 of about 1,187 (218)

Regional prediction and prevention analysis of rockburst hazard based on the Gaussian process for binary classification

open access: yesFrontiers in Earth Science, 2022
Rockburst is a complex dynamic disaster in coal mining and affected by many factors. To accurately predict the rockburst hazard among complex influencing factors, a prediction model of rockburst hazard based on the Gaussian process for binary ...
Tianwei Lan   +7 more
doaj   +1 more source

Mechanical anisotropy of coal under coupled biaxial static and dynamic loads [PDF]

open access: yes, 2021
Understanding the mechanical properties and fracturing behaviours of coal is significant for the safety of underground mining engineering. Coal failure characteristics are highly influenced by the anisotropy and loading conditions.
Du, K.   +6 more
core   +1 more source

Proposing a novel comprehensive evaluation model for the coal burst liability in underground coal mines considering uncertainty factors [PDF]

open access: yes, 2021
Coal burst is a severe hazard that can result in fatalities and damage of facilities in underground coal mines. To address this issue, a robust unascertained combination model is proposed to study the coal burst hazard based on an updated database.
Chen, Chao   +3 more
core   +2 more sources

Mechanism and Prevention of Rockburst in Deep Multipillar Gob-Side Entry

open access: yesLithosphere, 2022
Abstract Rockburst frequently occurs in deep multipillar gob-side entry in Inner Mongolia and Shaanxi, China. A case study of the Hongqinghe coal mine was analyzed to reveal the occurrence mechanism of rockburst in deep multipillar gob-side entry through theoretical and applied research. And new control methods were put forward.
Junfeng Pan   +3 more
openaire   +2 more sources

Research on Fault Activation Law in Deep Mining Face and Mechanism of Rockburst Induced by Fault Activation

open access: yesAdvances in Civil Engineering, 2020
To effectively monitor and control the severe mining-induced rockburst in deep fault area, the fault activation law and the mechanical essence of rockburst induced by crossing fault mining were studied through theoretical analysis, microseismic ...
Lyu Pengfei   +3 more
doaj   +1 more source

Use of Rock Mass Rating (RMR) values for support designs of tunnels excavated in soft rocks without squeezing problem [PDF]

open access: yes, 2019
Effect of the rock material strength on the RMR value and tunnel support designs were investigated within this study including site works, analytical and numerical analyses.
Demir, Serhat, Komurlu, Eren
core   +1 more source

Energy Accumulation and Dissipation of Coal with Preopening under Uniaxial Loading

open access: yesShock and Vibration, 2021
Energy accumulation and dissipation play an important role during the entire process of rock failure. Some flaws, such as preexisting holes, will influence energy accumulation and dissipation. In order to investigate the energy evolution of coal specimen
Xin Wei, Hao Hu, Yang Li
doaj   +1 more source

Human-triggered earthquakes and their impacts on human security [PDF]

open access: yes, 2010
A comprehensive understanding of earthquake risks in urbanized regions requires an accurate assessment of both urban vulnerabilities and earthquake hazards.
Christian Klose, Christian Klose
core   +4 more sources

Heavy rockbursts due to longwall mining near protective pillars: A case study

open access: yesInternational Journal of Mining Science and Technology, 2018
Rockburst represents a very dangerous phenomenon in deep underground mining in unfavourable conditions such as great depth, high horizontal stress, proximity of important tectonic structures, and unmined pillars. The case study describes a recorded heavy
Petr Konicek, Jan Schreiber
doaj   +1 more source

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