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Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study
Advances in Civil Engineering, 2018 In Chinese coal mines, gob-side entry retaining, an efficient technique for coal mining, has been widely used. However, severe roadway deformation and slow retaining speed have gravely restricted the popularization and its application. Hence, in order to
Hengjie Luan +3 more
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Combined blasting for protection of gob-side roadway with thick and hard roof
Journal of Rock Mechanics and Geotechnical EngineeringThe deformation control of surrounding rock in gob−side roadway with thick and hard roof poses a significant challenge to the safety and efficiency of coal mining. To address this issue, a novel approach combining directional and non-directional blasting techniques, known as combined blasting, was proposed.
Qiang Fu +6 more
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Sustainability, 2022 Close extra-thick coal seams are subject to the broken overburden of mined coal seams, and the deformation and damage of the roadways is serious, which affects the safe operation of the mine. To reduce the deformation and damage of the roadways, this paper studied the deformation and damage law of the gob-side roadway in close extra-thick coal seams ...
Bin Zhao +6 more
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Applied SciencesThe high stress environment and hard roof conditions seriously limit the application of gob-side roadway retaining. To achieve non-coal pillar mining, this study proposes a novel method combining roadside filling and roof cutting under stress-release and
Hainan Gao +7 more
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Advances in Civil Engineering, 2021 To study the optimal layout of prefabricated roof cutting line in gob-side entry retaining with roof cutting and pressure relief, based on the engineering geological conditions of 5249 working face in Beipingdong Coal Mine of Baoyuan Mining Company, the ...
Hao Wu, Chuanqu Zhu, Qingfeng Li
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Excavation methods and stability control strategies for gob-side roadways based on spatiotemporal evolution. [PDF]
Sci RepTo address the production succession challenges posed by single-wing mining, this study investigates the 5-1081 roadway of the Fenyuan Coal Mine as a representative example. Theoretical analysis and numerical simulation were combined to systematically examine the spatiotemporal relationship between the gob-side roadway and the overlying working face ...
Shan R +6 more
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Spatiotemporal evolution rule of rocks fracture surrounding gob-side roadway with model experiments
International Journal of Mining Science and Technology, 2016 Abstract A series of plane-strain physical model experiments are carried out to study the spatiotemporal evolution rule of rocks fracture surrounding gob-side roadway, which is subjected to the pressure induced by the mining process. The digital photogrammetry technology and large deformation analysis method are applied to measure the deformation and
Yuanhai Li
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Advances in Civil Engineering, 2021 Reasonable width of gob-side coal pillar can reduce the waste of coal resources and is conducive to roadway stability. According to the distribution of internal and external stress fields at the working face, a method for determining the width of gob ...
Ai Chen
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Meitan xuebao, 2023 Roof blast presplitting technology is an important means to preventing rockburst. Taking the frequent occurrence of rockburst in the gob-side roadway with hard roof in Ordos as background, the mechanical and UDEC numerical models of gob-side roadway ...
Jiahao XIE +4 more
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Energy Exploration & Exploitation, 2020 The non-pillar entry (roadway) retained by roof cutting serves the two adjacent working faces. As compared with the conventional mining roadways, the roadway retained by roof cutting has a longer life cycle and receives more complicated influence from ...
Xiao Liu +3 more
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