Results 101 to 110 of about 902 (192)

Research on the deformation and failure depth of the floor in fully mechanized top coal caving of extra-thick seam

, 2022
In order to explore the deformation and failure depth of the floor under the condition of fully mechanized top coal caving of extra-thick coal seam, this paper takes 1305 working face of Dongtan Coal Mine of Yankuang Energy Group Co., Ltd.
HOU Junhua
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Analysis on Rock Burst Risks and Prevention of a 54 m-Wide Coal Pillar for Roadway Protection in a Fully Mechanized Top-Coal Caving Face

, 2021
A case study based on the 401103 fully mechanized caving face in the Hujiahe Coal Mine was carried out in this research to analyze the rock burst risks in a 54 m-wide coal pillar for roadway protection.
Jianshuai Ji, Xiaobing Tian, Biao Jiao, Zhihua Li, Ke Yang   +4 more
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Development Patterns of Fractured Water-Conducting Zones under Fully Mechanized Mining in Wet-Collapsible Loess Area

, 2022
The development pattern of fractured water-conducting zones (FWCZs) is closely related to mining safety and water conservation in mining areas. However, neither the development pattern nor the empirical formula in the prediction of the height of FWCZs ...
Shengqiang Jing, Yonghai Teng, Sihai Yi, Wei Zhu   +3 more
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The spatiotemporal evolution patterns of thermal environment in fully mechanized caving faces of deep mine

Thermal Science
With 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, Li Ma, Gaoming Wei, Xixi Liu   +3 more
openaire   +1 more source

Mechanical Analysis of Mining Stress Transfer on Isolated Island Face in Extra-Thick Fully Mechanized Top-Coal Caving Mining

, 2020
The mining spatial structure of isolated island face in extra-thick fully mechanized top-coal caving mining is unique, which leads to a complex mining stress distribution and serious safety hazards.
Min Tu, Qingwei Bu, Yu Wang, Baojie Fu
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Technology of Fully-mechanized Top Coal Caving Face Passing Through Mine Abandoned Roadway in Chengzhuang Coal Mine

, 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 ...
DU Hailong
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Research and application of top coal caving characteristics at end of fully mechanized caving working face in hard and thick coal seam with super large mining height

Meitan xuebao
Fully-mechanized caving mining with super-large mining height is an effective method for safe and efficient mining of thick and extra-thick coal seams. Aiming at the problem of poor top coal caving ability at the end of fully-mechanized caving mining in ...
Ying MA, Shijun LIU, Ziyan MA, Duanzhi MA   +3 more
doaj   +1 more source

Key technologies and demonstration of unmanned steeply inclined short-wall fully mechanized top-coal caving intelligent mining [PDF]

Since the 14th Five-Year Plan, my China’s coal mine digital intelligence technology has developed rapidly, especially in thin coal seam mining. However, the unmanned intelligent mining technology of steeply inclined short-wall fully mechanized caving is ...
Xin TIAN, Wu XIONG, Qing LIU, Kunlun LIU, Yupeng YAO, Yanyi SUN, Xinping BAO, Ruibing YAN, Haodang LI, Junfei WU, Bin GU   +10 more
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Research on influence of coal seam thickness on caving characteristics of top-coal in inclined coal seam fully - mechanized caving faces

Meitan kexue jishu
The coal seam at the 2125 fully mechanized top-coal caving face in Hebi Coal Mine No. 6 exhibits unstable occurrence, with a thickness ranging from 0.4 m to 24 m and a dip angle varying between 8° and 35°.
Dongyin LI, Mingjin JIA, Mengguang LI, Hongbin LI, Shen WANG, Song LI   +5 more
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Construction and application of an intelligent prediction model for the coal pillar width of a fully mechanized caving face based on the fusion of multiple physical parameters [PDF]

The scientific and reasonable width of coal pillars is of great significance to ensure safe and sustainable mining in the western mining area of China. To achieve a precise analysis of the reasonable width of coal pillars in fully mechanized caving face ...
Wang, Huachuan, Xu, Huicong, Fan, Jingdao, Ding, Weixi, Yan, Zhenguo   +4 more
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