Results 51 to 60 of about 2,891 (238)
Meikuang Anquan, 2022 In order to improve the recovery rate of coal resources in general, Chengzhuang Coal Mine has carried out and implemented the technology of gob-side entry retaining in 5309 large height mining face.
SI Xiaopeng, ZHOU Changtai
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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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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
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The Stability of Gob‐Side Entry Retaining in a High‐Gas‐Risk Mine
Advances in Civil Engineering, 2019 There are series of problems faced by most of the coal mines in China, ranging from low‐coal recovery rate and strained replacement of working faces to gas accumulation in the upper corner of coalfaces. Based on the gob‐side entry retaining at the No. 18205 working face in a coal mine in Shanxi Province, theoretical analysis, numerical simulation, and ...
Junwen Zhang, Yulin Li
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Meitan kexue jishuGob-side entry retaining technology is of great significance to improve coal recovery rate, improve roadway stress environment and ensure mine safety and efficiency.
Chaochao YAN +5 more
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Advances in Materials Science and Engineering, 2019 Automatic roadways on gob-side entry retaining with no-pillars are used for longwall mining technology. The mining technology with no-pillars can recover coal pillar resources and reduce the amount and cost of roadway excavations.
Shengrong Xie +9 more
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Feasibility analysis of gob-side entry retaining on a working face in a steep coal seam
International Journal of Mining Science and Technology, 2014 Based on the decline in exploitation of coal resources, steep coal seam mining and mining face tensions continue to explore the feasibility analysis of steeply inclined faces in the gob.
Yuehua Deng, Shouquan Wang
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Gong-kuang zidonghua, 2019 In view of problems of high cost, complex construction technology and slow construction progress existed in traditional gob-side entry retaining technology which mostly adopts method of filling at the side of goaf to protect the roadway, the technology ...
WANG Xiaolong, DONG Zhiyong
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Mechanism and control technology of roof cutting induced pressure relief in gob-side entry retaining with roadside backfill under thick coal seam conditions [PDF]
To address the challenges of large deformation and stability control in filled gob-side entry retaining in thick coal seams, takeing the N3-13 working face as the engineering background.
Fuxin SHEN +8 more
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Floor Heave Mechanism of Gob-Side Entry Retaining with Fully-Mechanized Backfilling Mining [PDF]
Energies, 2017 Serious floor heave in gob-side entry retaining (GER) with fully-mechanized gangue backfilling mining affects the transportation and ventilation safety of the mine. A theoretical mechanical model for the floor of gob-backfilled GER was established. The effects of the mechanical properties of floor strata, the granular compaction of backfilling area ...
Peng Gong +3 more
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