Results 21 to 30 of about 24,399 (150)
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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Meikuang Anquan, 2021 In order to master the roof failure structure and mine pressure development law of large mining height working face, the roof collapse laws of different mining heights are calculated and analyzed, and the reasonable working resistance of support is ...
MENG Hao
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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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Meitan kexue jishu, 2023 Coal wall of large mining height face in steeply dipping coal seam has large free height, wide free movement space and poor self-stabilization balance, coal wall is not an isolated body in the face, it can form a load-bearing structure with the ...
Hao ZHANG, Yongping WU, Panshi XIE
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Adaptability Analysis of Full Height Mining at One Time of Deep Soft Thick Coal Seam
Frontiers in Earth Science, 2022 With the improvement of technology and equipment, it is preferred to adopt full-height mining at one time when conditions permit. According to the specific geological conditions of no.
Qinghai Li +5 more
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Research on Adaptability of Full-mechanized Caving Mining with Large Mining-height
Procedia Engineering, 2011 AbstractIn order to solve the safety problem from methane concentration in mining face with high mining intensity, full-mechanized top-coal caving mining with large mining-height was put forward. In spite of its advantages in controlling methane, its main problems were pointed out.
Quan-ming, LIU, De-bing, MAO
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Effect of Face Length in Initial Mining Stage of Fully Mechanized Top-coal Caving Face With Large Mining Height [PDF]
Geotechnical and Geological Engineering, 2021 Abstract Based on the field measurement of the end resistance of the support during the initial weighting of the basic roof and the macroscopic mine pressure behavior during the weighting period of 101,22211,103 and 301 fully mechanized caving face in Changchun Xing Coal Mine, the mine pressure law of the working face is summarized and compared,
Jianhang Wang +4 more
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Meikuang Anquan, 2020 This paper systematically summarizes the development process of fully mechanized top coal caving technology and equipment in Yankuang Group in recent 30 years.
MENG Xiangjun, LI Mingzhong, YUE Ning, SUN Jishuang
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