Results 11 to 20 of about 24,399 (150)
Mechanical characteristics of drum shearer with large mining height under oblique cutting [PDF]
E3S Web of Conferences, 2021 In order to study the dynamic characteristics of the shearer with large mining height of 8.8 m under Oblique cutting, the spatial mechanical model of the Shearer under oblique cutting was established, the angle between the drum and the working face, the ...
Ying Tian, Runxin Zhang, Qiang Zhang
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Research on automatic control technology of large mining height hydraulic support
Gong-kuang zidonghua, 2018 In view of problems of high roof pressure, serious spalling and roof falling and instable support in production of large height mining face, demands of automation control technology of the large mining height hydraulic support were analyzed.
WANG Haiju
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Gong-kuang zidonghua, 2018 In order to solve problems of large number of workers and high labor intensity on fully mechanized mining face with large mining height, according to actual situation of No.2 Coal Mine of Huangling Mining Group Co., Ltd., technical difficulties such as ...
FAN Jingdao
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Research on the Mechanism and Control Technology of Coal Wall Sloughing in the Ultra-Large Mining Height Working Face [PDF]
International Journal of Environmental Research and Public Health, 2023 Xue-Long Li +2 more
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Fracture Mechanical Behavior of Cracked Cantilever Roof with Large Cutting Height Mining [PDF]
Shock and Vibration, 2020 Accurately predicting the roof collapse span is crucial in ensuring the safe production of thick seam mining with large mining height, which is easy in forming a “cantilever beam” structure.
Zenghui Zhao +4 more
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Dust Distribution of PM5 and PM10 in Large Mining Height Fully-Mechanized Face
Meikuang Anquan, 2020 In order to obtain the dust distribution of PM5 and PM10 in large mining height fully-mechanized face, the dust concentration around the shearer drum and along the downwind side of the shearer are measured under the conditions of the following wind and ...
SU Shilong, HAO Yongjiang
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Research on Technology of Supporting in Super‐Large Section Cut in Working Face with Large Mining Height [PDF]
Advances in Civil Engineering, 2021 For the support problem of the super‐large section cut in working face with large mining height, the 1105 cut pilot chamber of Zhaogu No. 2 Mine, the roof strata structure detection and the strata movement rule research were conducted. The results prove that concentrate fracture area, gradually sparse fracture area, and rare fracture area regularly ...
Zhicheng Ren, Minghui Zuo
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Improvement Design of Gangue Blocking Device of Shearer with Large Mining Height
Gong-kuang zidonghua, 2012 The structure, principle, technical characteristics and existed problems of traditional gangue blocking device of shearer with large mining height were analyzed, an improvement design was proposed and simulation analysis was given. By means of increasing
LI He +3 more
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Advances in Civil Engineering, 2021 In recent years, in order to increase the coal recovery rate, the large mining height fully mechanized top-coal caving mining has been widely used because it has the advantages of both fully mechanized mining method and large mining height mining method.
Baisheng Zhang +4 more
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Geofluids, 2022 Aiming at the wide range of rock strata movement and collapse, poor stability and high damage rate of the working face support and being prone to crushing of the support in large mining height face, analog simulation, theoretical analysis, and field ...
Fengfeng Wu +5 more
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