Numerical simulation study on hard-thick roof inducing rock burst in coal mine
Journal of Central South University, 2016In order to reveal the dynamic process of hard-thick roof inducing rock burst, one of the most common and strongest dynamic disasters in coal mine, the numerical simulation is conducted to study the dynamic loading effect of roof vibration on roadway surrounding rocks as well as the impact on stability.
Siyuan Gong, Jiang He, Linming Dou
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Numerical and Field Investigations of Rockburst Mechanisms Triggered by Thick-Hard Roof Fracturing
Rock Mechanics and Rock Engineering, 2022Caiping Lu +2 more
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Study on the Mechanism and Prevention of Frequent Mine Seismic Events in Goaf Mining under a Multi-Layer Thick Hard Roof: A Case Study [PDF]
Minerals (Basel, Switzerland), 2023 Mine seismic events are an inevitable dynamic phenomenon occurring in deep mines. A scientific and rational method is needed to evaluate and understand mine seismicity and its induced disasters. In the Ordos mining area of North China, multiple groups of
Si-Tao Zhu, Bo Wang, Jinwen Bai
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In order to determine the reasonable empty roof distance during roadway excavation, a mechanical model of the direct roof rock beam was established, and the relationship between the direct roof tensile stress and the empty roof distance was obtained. According to the criterion of roof stability, that is, the tensile stress of the roof does not exceed ...
Sen Yang +3 more
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A Case Study of Effective Support Working Resistance and Roof Support Technology in Thick Seam Fully-Mechanized Face Mining with Hard Roof Conditions [PDF]
Sustainability, 2017 This paper presents the engineering geological properties and roof control tecnology for a thick coal seam fully-mechanized face mining with hard roof conditions (THC) at the Jinhuagong Coal Mine (JCM), northwest China.
Hong-Sheng Wang, Weibin Guo
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Response and control technology for entry loaded by mining abutment stress of a thick hard roof
International Journal of Rock Mechanics and Minings Sciences, 2016, Jian-Biao Bai
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A New Method to Assess Thick, Hard Roof-Induced Rock Burst Risk Based on Mining Speed Effect on Key Energy Strata [PDF]
Sustainability, 2022 Roof-type rock burst (RTRB) frequently occurs in the hard, thick roof of working faces, which causes roadway failure, facility damage and even personnel casualties.
Shihao Tu, Miao Kaijun, Jieyang Ma
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Deep-hole directional fracturing of thick hard roof for rockburst prevention
Tunnelling and Underground Space Technology, 2012Abstract Thick hard roof in coal mines is usually a significant factor that induces dynamic disasters, such as rockburst. This study introduces a new technology called directional hydraulic fracturing characterized by cutting out an initial groove in the borehole and then injecting high pressure liquid to break the rock.
Hu He +4 more
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Experimental study on the bump-inducing mechanism of slicing in thick coal seams with hard roofs
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2021The bump-inducing mechanism of slicing in thick coal seams with hard roofs is still not completely understood.
Chuan Chen +5 more
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In order to find out the cause of the mining roadway of mine test roof fall in the excavation period, to based roof stability partition method, The main research methods is using RFPA software numerical simulation, according to the specific condition roof strata of the mine test, build 6 different thickness of medium sandstone model, get the ...
Hong Tao Liu +3 more
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