Results 91 to 100 of about 5,156 (170)
Integrated Treatment Technology of Storage-Mining Inclined Goaf under Expressway
, 2020 An inclined goaf caused by storage mining is a serious risk to subgrades and pavements. In this paper, effective investigation and detection methods of goafs were discussed considering the project of the Urumqi East Ring Expressway crossing the existing ...
Jianjun Ren +5 more
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Stability of surrounding rock with water accumulation in goaf [PDF]
This study investigates the influence of water accumulation in goaf on the stability of surrounding rock in a coal mine in Shanxi Province via field test, laboratory experiment and numerical simulation. Specifically, we established 3D geometric models of
JIN Changyu, CHEN Tianyu, WEI Zhenlin
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Energy Science & EngineeringRoof cutting and pressure relief mining technology has been applied in coal mine enterprises because of its advantages of improving the resource utilization rate.
Mengke Liu +4 more
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Coal mine goaf gas predictor (CMGGP)
, 2010 Research has consolidated on the knowledge of gas emission characteristics of coal mine goaf in Australia into a form which enables emission predictions to be made using limited input data. The fundamental principles are encapsulated within the coal mine
Les Lunarzewski (20181783)
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Modelling of gas flows in the goaf of retreating faces [PDF]
, 1993 In retreating faces, dilution of firedamp flowing out of the goaf area at the junction of face and retum roadway is problematic. Despite important flowrates and high CH4 drainage efficiencies, it has been observed that 2/3 of firedamp evacuated by the ...
Bouet, Rémy +2 more
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Automatic sealing system for goaf along gob-side entry retaining
The existing sealing methods for goaf along gob-side entry retaining mainly focus on building sealing walls and sealing wall cracks. The construction period is long and repeated, which consumes a lot of labor costs, has a low degree of automation, and is
XIA Xiaofeng +3 more
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Study on Risk Classification of Goaf Based on RS-SVM
, 2019 According to the uncertainty and concealment of the risk of goaf, a risk classification model of goaf is constructed based on rough set (RS) knowledge and support vector machine (SVM) theory. In this paper, based on statistical analysis and measured data,
Haiping Yuan +4 more
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Research on fire early warning index system of coal mine goaf based on multi-parameter fusion
Scientific ReportsIn order to improve the precision of goaf fire early warning outcomes, this paper obtains the temperature characteristic index of goaf fire early warning by using a coal spontaneous combustion thermogravimetric test and a coal spontaneous combustion ...
Beifang Wang, Yuanhao Lv, Chunbao Liu
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Frontiers in Earth ScienceThe collapse of goaf is one of the most serious geological disasters in cities where underground mineral resources are mined. The ground subsidence caused by the goaf limits the social and economic development of the area, while also endangering the ...
Lin Teng +5 more
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Dynamic stability evaluation method of mine goaf slopes [PDF]
The collapse and damage of inclined rock and soil masses caused by subsidence in mining goaf areas pose serious geological risks. These hazards are not only highly destructive and widespread but also occur suddenly, endangering mine operations and human ...
Yan DU +5 more
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