Results 141 to 150 of about 6,281 (245)
Meikuang Anquan, 2020 For the characteristics of the two empty lanes which are parallel empty roadways in front of 3311 fully mechanized caving face in Chengzhuang Mine and empty roadway in roof, and the problems that overhanging support pressure overlaps, the mine pressure appears severely and the roof collapses, etc, filling empty lane is a reasonable way to pass empty ...
openaire +1 more source
Vertical Stress and Deformation Characteristics of Roadside Backfilling Body in Gob-Side Entry for Thick Coal Seams with Different Pre-Split Angles [PDF]
, 2019 Retained gob-side entry (RGE) is a significant improvement for fully-mechanized longwall mining. The environment of surrounding rock directly affects its stability.
Feng, Guorui +8 more
core +1 more source
Gob Spontaneous Combustion in a Fully Mechanized Long-wall Top-Coal Caving Face [PDF]
, 1999 Geological conditions allow, underground coal mines in China tend to use comprehensively mechanized roof-coal caving technique in an effort to gain a higher degree of mechanization at coal faces as well as higher coal production rates. As a face advances,
Deng, Jun +4 more
core +1 more source
Requirements for the conceptual design of advanced underground coal extraction systems [PDF]
Conceptual design requirements are presented for underground coal mining systems having substantially improved performance in the areas of production cost and miner safety. Mandatory performance levels are also set for miner health, environmental impact,
Gangal, M. D., Lavin, M. L.
core +1 more source
Thermal ScienceWith the increase in mine depth, the original rock temperature rises under the influence of the geothermal gradient. High temperature surrounding rock heat dissipation leads to an increase in working face temperature, seriously affecting mining production safety. Using distributed fiber optic temperature measurement to study the thermal characteristics
Shangming Liu +3 more
openaire +1 more source
Experimental research on overlying strata movement and fracture evolution in pillarless stress-relief mining [PDF]
, 2015 core +1 more source
Structure model of roadway with large deformation and its basic research into engineering theories [PDF]
, 2014 S povećanjem dubina vađenja rude i nastanka pogoršanih radnih uvjeta, opsežno i brzo vađenje rude u dubini može voditi ka složenijim dinamičkim karakteristikama tunela, njihovom izloženošću dinamičkim nesrećama kao što su raspuknuće stijene te provale ...
Mikael Rinne +4 more
core +1 more source
Observation of Overlying Strata Failure Height in Fully Mechanized caving in Tongxin mine [PDF]
Proceedings of the 2016 7th International Conference on Mechatronics, Control and Materials (ICMCM 2016), 2016 Pengshuai Fang, Wenyong Liu, Yansen Huai
openaire +1 more source
Characteristics of Airborne Dust in the Return Airways of the Mechanized Longwall Face [PDF]
, 1999 In this paper the results of a research study on the characterisation of airborne dust in the return airway of the mechanized longwall face at Middle Anatolian Lignite Mine, OAL are presented.
Güyagüler, Tevfik, Keskin, Sinan
core +1 more source
WaterAccurate prediction of the height of water-conducting fissure zone (HWCFZ) is an important issue in coal water control and a prerequisite for ensuring the safe production of coal mines.
Wei Chen +5 more
semanticscholar +1 more source