Results 31 to 40 of about 25,519 (265)
Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study
Applied SciencesRoof separation, destabilization and collapse of multilayer roof structures are difficult to control in large mining height gob-side entries due to severe mining pressure.
Yong Chen +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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Coal Wall Spalling Mechanism and Grouting Reinforcement Technology of Large Mining Height Working Face. [PDF]
Sensors (Basel), 2022 To control the problem of coal wall spalling in large mining height working faces subject to mining, considering the Duanwang Mine 150505 fully mechanized working face, the mechanism of coal wall spalling in working faces was investigated by theoretical ...
Liu H +8 more
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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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Strong mine pressure appearing mechanism and control at deep buried working face with large mining height [PDF]
Meitan kexue jishuDuring the mining of the adjacent working face, the strong mine pressure caused by the hard thick roof has obvious zoning characteristics due to the mining of the previous deeply buried large mining height working face. The mechanism of the strong mine pressure at the adjacent working face is the basis for realizing safe and efficient mining.
Zhaoyuan LEI +4 more
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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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Meikuang Anquan, 2021 In order to realize the safety, high efficiency and high recovery rate mining of 9-13 m thickness hard coal seam in Jinjitan Coal Mine, the top coal recovery rate and coal wall stability of different cutting heights are analyzed by theoretical analysis ...
MENG Xiangjun +6 more
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Applied Sciences, 2023 The coal walls in a caving face with a tall mining height are prone to rib spalling, which leads to the phased cessation of the mining of the working face, causes heavy losses, and endangers the safety of underground workers.
Guohao Meng +4 more
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Research on Dust Source Traceability Based on Dust Migration Law in Working Area of Large Mining Height Fully-mechanized Face [PDF]
E3S Web of Conferences, 2022 The dust control basis of fully mechanized mining face is clear dust source characteristics. In view of the problem of unclear dust source and unknown distribution characteristics in the working area of 7.8 m large fully mechanized mining face, the fully
Li Zhi, Ma Wei
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Gong-kuang zidonghua, 2014 The paper introduced key technologies of automatic fully-mechanized top-coal caving face with large mining height, including automatic control of hydraulic support, machinery-tracked automation, automation of coal caving, remote control, lighting and low
FAN Zhizhong
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