Results 1 to 10 of about 412 (151)

Dynamic distribution and prevention of spontaneous combustion of coal in gob-side entry retaining goaf. [PDF]

PLoS ONE, 2022
The 11101 working face of Qipanjing Mine was taken as the research object to explore the dynamic change law of the spontaneous combustion of the remaining coal in the gob-side entry retaining goaf area.
Dongjie Hu, Zongxiang Li
doaj   +4 more sources

Mechanism and engineering practice of roof stability for secondary gob-side entry retaining in deep mines [PDF]

Scientific Reports
To facilitate the reuse of the gob-side retained entry as a long-term return airway, alleviate mining-excavation pressure, and reduce roadway development costs, this paper proposes a secondary gob-side entry retaining technique.
Jingke Wu, Jiarui Chen, Fuxing Xie
doaj   +3 more sources

Study on Surrounding Rock Stability Mechanism of Gob-Side Entry Retaining with Prefabricated Fracture [PDF]

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
doaj   +2 more sources

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, Yujing Jiang, Lujie Zhou, Huili Lin   +3 more
doaj   +2 more sources

Characteristics and Safety of CO₂ for the Fire Prevention Technology with Gob-Side Entry Retaining in Goaf. [PDF]

ACS Omega, 2021
The mining technology of gob-side entry retaining without a coal pillar is gradually becoming a mature and increasingly important mining technology. As it maintains the roadway near goaf, the air leakage should be greater than a U-type ventilation system in goaf, so it is prone to cause coal spontaneous combustion problems.
Si J, Li L, Cheng G, Shao H, Wang Y, Li Z.   +5 more
europepmc   +5 more sources

Evolutionary law and regulatory technology of roof migration on gob-side entry retaining. [PDF]

Sci Rep
AbstractIn order to study the evolutionary law of roof migration on Gob-Side Entry Retaining, this paper takes the gob-side entry retaining in the comprehensive mining face of the Ningtiaota coal mine as the engineering background, and analyzes the evolutionary law of the overlying rock layer on the roof at different locations during the roadway stay ...
Zhang LX, Yi L, Gang L, Liu GC, Deng ZH, Mi JL.   +5 more
europepmc   +4 more sources

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, LI Chen, LIU Xiao, GUO Yongjian, QI Yabao, CHEN Denghong   +5 more
doaj   +2 more sources

Study of An Innovative Approach of Roof Presplitting for Gob-Side Entry Retaining in Longwall Coal Mining

Energies, 2019
Gob-side entry retaining (GER) is a hot issue with regard to saving resources and reducing the drivage ratio in longwall mining. This paper investigates an innovative approach of roof presplitting for gob-side entry retaining (RPGER).
Xingyu Zhang, Liang Chen, Yubing Gao, Jinzhu Hu, Jun Yang, Manchao He   +5 more
doaj   +3 more sources

Study on the failure law of surrounding rock in inclined coal seam with gob side entry [PDF]

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, Qingfeng Li, Chuanqu Zhu, Liao He   +3 more
doaj   +2 more sources

Development of a New Gob-Side Entry-Retaining Approach and Its Application [PDF]

Sustainability, 2018
Gob-side entry retaining plays an important role in the sustainable exploitation of coal resources and has been widely used in coal mining. However; some disadvantages, such as high labour intensity and low efficiency of wall construction, have gravely restricted the application of this technique.
Hengjie Luan, Yujing Jiang, Guofeng Li   +2 more
exaly   +2 more sources