Results 31 to 40 of about 2,891 (238)
A New Gob-Side Entry Layout Method for Two-Entry Longwall Systems
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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Microrheology of colloidal dispersions: Shape matters [PDF]
, 2008 We consider a “probe” particle translating at constant velocity through an otherwise quiescent dispersion of colloidal “bath” particles, as a model for particle-tracking microrheology experiments in the active (nonlinear) regime.
Brady, John F., Khair, Aditya S.
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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 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 +5 more
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Interactions around a contextually embedded system [PDF]
, 2010 This paper discusses observations of visitor interactions around a museum installation, focusing on how physical setup and shape of two variants of the installation, a telescope-like viewer and a barrier-free screen, shaped visitor experiences and ...
Hornecker, E.
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Review and development of surrounding rock control technology for gob-side entry retaining in China [PDF]
, 2023 The research and application of gob-side entry retaining (GER) technology in Chinese coal mines has been over 60 years. Two major technical types including GER with filling and GER with roof cutting were developed.
Honglin LIU +7 more
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矿业科学学报, 2019 In order to smoothly implement gob-side entry retaining and mining without coal pillar in 3207 working face of Nanyang Coal Mine,Shanxi Province,this paper proposes to carry out advanced deep-hole blasting pre-splitting roof near gob side supporting wall.
Hu Tao +6 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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Applied Sciences, 2021 The traditional gob-side entry-retaining mining method has problems such as difficulty in roof collapse and large deformation of the entry, which may affect the safety of mine production.
Hainan Gao +6 more
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Research on the coupled support technology of a composite rock beam-retained roadway roof under close coal seams [PDF]
, 2023 IntroductionThe technology of gob-side entry retaining without coal pillars in close (distance) coal seams is still immature, and the roof control and support technology in this case is not perfect.MethodsIn this paper, the coupled support technology of ...
Daowei Liu +9 more
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