Results 11 to 20 of about 2,891 (238)
Stability study on naturally filling body in gob-side entry retaining
International Journal of Mining Science and Technology, 2012 Abstract In the construction of the filling gob-side entry retaining in a lane, we utilize the self-slide natural phenomenon of a falling gangue in an inclined coal seam goaf. First, we put the falling gangue of goaf above the laneway and made it the main filling material by adopting the measurement of flexible supporting system combined with those ...
Baojing Zhou +3 more
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An Innovative Approach for Gob-Side Entry Retaining in Thick Coal Seam Longwall Mining [PDF]
Energies, 2017 Gob-side entry retaining (GER) is a popular non-pillar mining technique regarding how to reserve a gateroad for the use of next panel mining. When used in thick coal seams, the conventional entry retaining method requires a huge amount of filling materials and may cause entry (gateroad) accidents. Thus, an innovative non-pillar longwall mining approach
Manchao He +3 more
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Meikuang Anquan, 2022 The mining technology of gob-side entry retaining is widely adopted by China’s coal mining enterprises because of its high economic significance. However, gob-side entry retaining also has some problems, such as long service time, many times of mining ...
ZHAO Zhiyan
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Current situation of gob-side entry retaining and suggestions for its improvement in China
Meitan kexue jishu, 2023 Based on the article of “Status Quo and Suggestions for the Technology Development of Support along Gob-Side Entry Retaining in China” the work summarized the new technological development of gob-side entry retaining in China since the 21st century ...
HUA Xinzhu +5 more
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Stability analysis of inclined coal seam roadway along goaf considering non-uniform filling of gob gangue [PDF]
, 2023 After the mining of inclined coal seam, the roof falling gangue of goaf moves downward to fill the goaf due to gravity, which makes the strata behavior law of gob-side entry retaining in inclined coal seam different from that in horizontal coal seam.
Bo LI +7 more
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Position-optimization on retained entry and backfilling wall in gob-side entry retaining techniques [PDF]
International Journal of Coal Science & Technology, 2015 This study investigates the stability problem of gob-side entry retaining (GER) and backfilling wall which located under the key block B. Based on the combined research of elastic–plastic mechanics, structure mechanics and modern theory of mining-induced pressure, the caving characteristic and roof structure over the GER were analyzed, and the vertical
Feng, Xiaowei, Zhang, Nong
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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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Mechanical models and support technologies for retaining gob-side entry [PDF]
Proceedings of the Taishan Academic Forum - Project on Mine Disaster Prevention and Control, 2014 Aiming at gob-side entry retaining for three typical roof conditions (hard roof, medium stable roof and limestone roof), theoretical analysis, numerical simulation, laboratory test and field test were carried out. Different support mechanical models were built, and various roadside support technologies were presented.
Tongbin Zhao +3 more
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Gong-kuang zidonghua, 2021 In Lianghuai area of China, due to the influence of the large buried depth of the mine and the complicated roof conditions, when gob-side entry is retained, the roof deformation of the gob-side entry retaining is large, the coal side is easily extruded ...
SHEN Binxue1,2 +7 more
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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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