Results 31 to 40 of about 753 (208)
Study of Gob‐Side Entry Retaining Technology with Roof Cutting under Upper Roadway Condition [PDF]
Shock and Vibration, 2021 Gob‐side entry retaining technology with roof cutting (GERRC) has been widely used in flat and near‐flat coal seam conditions, but its application under inclined coal seam is still very deficient. In order to further improve the application system of GERRC and overcome the application difficulties under special geological conditions, this paper takes ...
Xingen Ma +5 more
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Pressure Relief Mechanism of Directional Hydraulic Fracturing for Gob‐Side Entry Retaining and Its Application [PDF]
Shock and Vibration, 2021 In order to make clear the pressure relief mechanism and application effect of directional hydraulic fracturing for gob‐side entry retaining, the directional hydraulic fracturing was carried out by 400 m in haulage gateway remaining along the goaf in 50108 working face of Hejiata Coal Mine.
Zhang Xiao, Kang Hongpu
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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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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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Soft Roof Failure Mechanism and Supporting Method for Gob-Side Entry Retaining
Minerals, 2015 To study the soft roof failure mechanism and the supporting method for a gateway in a gently inclined coal seam with a dip angle of 16° kept for gob-side entry retaining, and through the methodology of field investigation and numerical and analytical modeling, this paper analyzed the stress evolution law of roof strata at the working face end and ...
Hongyun Yang +4 more
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Gong-kuang zidonghua, 2022 The deformation and failure mechanism of surrounding rock and the control measures under the condition of long-time high superimposed stress are the keys to gob-side entry retaining support technology in thick coal seam with soft bottom.
KANG Zhipeng +3 more
doaj +2 more sources
A Case Study on Gob‐Side Entry Retaining Technology in the Deep Coal Mine of Xinjulong, China [PDF]
Advances in Civil Engineering, 2020 Through the analysis of the project of gob‐side entry retaining in the deep gangue filling 2305S‐2# working face of the Xinjulong coal mine, the principle and technology of surrounding rock control of gob‐side entry retaining along the deep mining face are discussed.
Ping Wang +9 more
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Geofluids, 2022 When gob-side entry retaining is adopted in the mining face with large cutting height, due to large stope space, strong dynamic pressure, and other reasons, the filling body is usually broken and unstable due to improper width of filling body, and the ...
Shijiang Pu +5 more
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FireRelative to conventional coal pillar retention mining technology (the 121 mining method), gob-side entry retaining by cutting roof (the 110 mining method), a non-pillar mining technique, efficiently addresses issues like poor coal resource recovery and ...
Zhipeng Zhang +6 more
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Surrounding rock control technology of gob-side entry retaining in deep high mining face
Meikuang AnquanUnder the influence of multiple mining influences, the mining pressure is more intense and the surrounding rock deformation is large, which is easy to cause the surrounding rock instability of gob-side entry retaining in fully mechanized mining face.
Junhu ZHANG +5 more
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