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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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A New Gob-Side Entry Layout Method for Two-Entry Longwall Systems [PDF]
Energies, 2018 The gob-side entry layout is popular at two-entry longwall mine sites in China for the benefit of improving the coal recovery rate. Currently, two methods have been widely used to develop gob-side entries, including gob-side entry retaining and gob-side ...
Rui Wu +4 more
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Advances in Materials Science and Engineering, 2020 China has a large number of coal resources in “three-soft” geological conditions. The roof of these coal seams is soft and has low strength. Under this condition, gob-side entry retaining can be carried out under the guidance of roof leading holes to ...
Tao Yang, Jie Zhang
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Advances in Materials Science and Engineering, 2020 The stress concentration of gob-side entry surrounding rock is a hot topic in coal mining. In this paper, through theoretical analysis and numerical simulation, the pressure relief mechanism of the gob-side entry retaining by roof cutting and pressure ...
Yong Zhang +5 more
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Meikuang Anquan, 2021 The stability of the roof above the filling body is a key factor affecting the effect of gob-side entry retaining. In view of the problem of roof separation control of gob-side entry retaining at 22301 working face with large mining height in Tunlan Coal
CAO Junwen
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Energies, 2019 The hanging of hard roof strata in the gob-side retaining entry in deep mines could lead to dynamic disasters. The pressure relief mechanism for the hard roof strata using shallow-hole blasting was investigated by a combined method of theoretical ...
Yong Chen +4 more
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Study on the failure law of surrounding rock in inclined coal seam with gob side entry
Scientific Reports, 2023 Aiming at the problem of stability control of surrounding rock in the process of upward mining of inclined coal seam gob-side entry retaining, the gob-side entry retaining of 5449 working face in Beipingdong coal mine is taken as the research background.
Hao Wu +3 more
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Energies, 2023 Gob-side entry retaining by roof cutting, a pillarless mining technique, plays a critical role in maintaining continuous production, rapid connection, and enhancing the coal recovery rate in fully mechanized top coal caving working faces.
Yongkang Yang +3 more
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Spontaneous caving and gob-side entry retaining of thin seam with large inclined angle
International Journal of Mining Science and Technology, 2014 Based on the research method of combining simulation analysis with field testing by distinct element process UDEC, we have analyzed the roof deformation and failure laws and roadway support technology of gob-side entry retaining in a thin seam with a ...
Yongqin Zhang +4 more
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Analysis of the effect of cutting depth under thick immediate roof on gob-side entry retaining stability [PDF]
Gong-kuang zidonghuaThe stability of gob-side entry retaining with roof cutting and pressure relief is primarily influenced by roof cutting parameters. However, determining appropriate cutting parameters for gob-side entry under the effect of a thick immediate roof is ...
WANG Fei +3 more
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