Results 211 to 220 of about 6,281 (245)
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Technological optimization of fully mechanized caving mining face with large mining heights
Journal of Coal Science and Engineering (China), 2013Fully mechanized cave mining with large mining height is a new mining method, due to its large mining thickness and lower roadway excavation, the technology has been widely used in China’s thick seam mining. In order to improve the top-coal recovery ratio of fully mechanized cave mining with large mining height, a study was conducted on optimizing the ...
Lu-Jia Fan, Sheng-Li Yang
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Explored the Fully-Mechanized Caving Mining of Water Flowing Fractured Zone
Advanced Materials Research, 2012In one class mining under water, the height of water flowing fractured zone can realize safe mining is the main parameters. This paper is a stage summary and explored in Tiefa coal group Co., LTD. KangPing coal mine about water flowing fractured zone.This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech ...
Qiang Li, Chun Xi Luo, Ling Hui Meng
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Quarterly journal of engineering geology and hydrogeology
This paper focuses on the risk of water inrush from the old goaf water of the upper coal group to the first mining face of the lower coal group under the condition of fully mechanized caving mining.
Zhilong Yang, Shuyun Zhu, Yingzhou Chen
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This paper focuses on the risk of water inrush from the old goaf water of the upper coal group to the first mining face of the lower coal group under the condition of fully mechanized caving mining.
Zhilong Yang, Shuyun Zhu, Yingzhou Chen
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Applied Mechanics and Materials, 2013
Based on the great thickness of coal seam in Tashan Mine, narrow pillar mining technology was adopted to liberate more coal resources from coal pillars. In this paper, the research status of narrow pillar technology was analyzed, and the main problems of the narrow pillar mining technique were solved by theory research.
Yuan Fan +4 more
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Based on the great thickness of coal seam in Tashan Mine, narrow pillar mining technology was adopted to liberate more coal resources from coal pillars. In this paper, the research status of narrow pillar technology was analyzed, and the main problems of the narrow pillar mining technique were solved by theory research.
Yuan Fan +4 more
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Applied Sciences
The section span of the withdrawal space of fully mechanized top coal caving in an extra-thick coal seam is large, and with the gradual withdrawal of the hydraulic support, a series of strong dynamic pressure disasters occur in the withdrawal space, and ...
Dongdong Chen +8 more
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The section span of the withdrawal space of fully mechanized top coal caving in an extra-thick coal seam is large, and with the gradual withdrawal of the hydraulic support, a series of strong dynamic pressure disasters occur in the withdrawal space, and ...
Dongdong Chen +8 more
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Advance in Civil Engineering
Due to repeated mining in the 130203 fully mechanized top coal caving mining face of the coal mine, the severe mining pressure phenomenon occurs in the return airway.
Fengyuan Lv +7 more
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Due to repeated mining in the 130203 fully mechanized top coal caving mining face of the coal mine, the severe mining pressure phenomenon occurs in the return airway.
Fengyuan Lv +7 more
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Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020
To analyze the feasibility of fully mechanized large mining height long wall top-coal caving mining (LLTCC) in ultra-thick (20–30 m), parting-rich coal seams, a case study on No. 6 coal seam of the Laosangou mining field was conducted.
Yazhou Zhou +4 more
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To analyze the feasibility of fully mechanized large mining height long wall top-coal caving mining (LLTCC) in ultra-thick (20–30 m), parting-rich coal seams, a case study on No. 6 coal seam of the Laosangou mining field was conducted.
Yazhou Zhou +4 more
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Applied Mechanics and Materials, 2014
The top-coal caving mining recovery rate is one of the important indexes of evaluating mining technical measures. This paper, by using the similar model and numerical simulation on the experimental analysis, fully integrates the advantages of numerical simulation and similarity simulation to simulate the rock mass deformation and stress rules in the ...
Zhao Long Li +2 more
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The top-coal caving mining recovery rate is one of the important indexes of evaluating mining technical measures. This paper, by using the similar model and numerical simulation on the experimental analysis, fully integrates the advantages of numerical simulation and similarity simulation to simulate the rock mass deformation and stress rules in the ...
Zhao Long Li +2 more
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Geotechnical and Geological Engineering, 2017
In underground coal mines, the connection between the water-flow fracture zone and aquifer can potentially cause massive water and sand inrush when the working face is covered with unusually thick (638.4 m) alluvium. This paper presents a case study for a method used to investigate the height of the water-flow fracture zone in the Xinjulong mine, China.
Wenquan Zhang +3 more
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In underground coal mines, the connection between the water-flow fracture zone and aquifer can potentially cause massive water and sand inrush when the working face is covered with unusually thick (638.4 m) alluvium. This paper presents a case study for a method used to investigate the height of the water-flow fracture zone in the Xinjulong mine, China.
Wenquan Zhang +3 more
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Analyses on factors influenced top-coal caving of fully mechanized mining for thick coal seam
2011 Second International Conference on Mechanic Automation and Control Engineering, 2011For the actual implementation of fully-mechanized caving mining in thick coal seam in China, systems analysis of the influence factors of top coal capability, including natural geological factors and technology factors. Influence factors of top coal capability, constitute analysis of fully mechanized caving coal loss, thereby reducing loss of coal ...
null Renjie Gao +2 more
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