Results 231 to 240 of about 25,519 (265)

Design of Debris Shield of Powered Support with 6.2M Large Mining Height

Applied Mechanics and Materials, 2010
One of the difficulties of the world’s mining industry is how to ensure safe and reliable work of the powered support with large mining height more than 6m. The paper introduces the design and calculation of debris shield of the powered shield support with 6.2M large mining height.
Jing Chen, Shao Xiang Hao, Xun Fan
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DESIGN AND OPTIMIZATION OF DEBRIS SHIELD OF POWERED SHIELD SUPPORT WITH LARGE MINING HEIGHT

Journal of Advanced Manufacturing Systems, 2011
One of the difficulties of the world's mining industry is how to ensure safe and reliable work of the powered support with large mining height of more than 6 m. In this paper, first mechanical model of powered support with large mining height was established, the mechanical characteristics of powered support was analyzed, and the stress analysis and ...
JING CHEN, SHAOXIANG HAO, XUN FAN
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Stability Analysis of Hydraulic Support in Large Inclined and High Mining Height Coalface

Applied Mechanics and Materials, 2011
Under the condition of large inclined angle, the stability control of hydraulic support was always the challenge for the fully-mechanized mining in large inclined coal seams. Based on the specific geological conditions of 509 coalface with large inclined and high mining in Gaozhuang mine, the model of hydraulic support had been drawn by using ...
Wei Zhang, Dong Sheng Zhang, Yong Shu Zhao   +2 more
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The Roof Safety under Large Mining Height Working Face: A Numerical and Theoretical Study

Minerals (Basel, Switzerland), 2022
As an important technology of thick coal seam mining, fully mechanized mining with a large mining height has high mining efficiency. In order to study the roof safety control of large mining height working face, the 122106 working face of Caojiatan coal ...
Xiaofang Wo, Sen Yang, Haoran Hao
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Study on rib spalling control of shortwall drilling mining technology with a large mining height

Arabian Journal of Geosciences, 2021
The drilling shearer and drilling mining technology has been developed in order to effectively control the rib spalling of a shortwall with a large mining height face in a soft thick coal seam. Working face no. 1305 of the Zhaozhuang Coal Mine was taken as the research subject.
Yong Yuan, Cheng Zhu, Hongmin Wei, Chaofeng Yuan, Zhongshun Chen   +4 more
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Vibration Analysis of a Three-Drum Shearer for a Large Mining Height

Strength of Materials, 2020
A method of cutting coal with three drums was advanced, a three-drum shearer was designed, and the free mode and restrained model under prestress of the third drum were analyzed in large mining with ANSYS Workbench 14.0 to solve the damage problem of the cutting blade in a large mining face.
Q. Zhang, Y. Wang, B. Q. Li, Y. Tian
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Technological optimization of fully mechanized caving mining face with large mining heights

Journal of Coal Science and Engineering (China), 2013
Fully 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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Failure analysis of super-large mining height powered support

Engineering Failure Analysis, 2018
Abstract In order to study the support failure mechanism of a super-large mining height powered support, a mathematical model of the load carrying capability area (LCCA) under various loading conditions for the support was established. A certain type of support was considered as an example, and the distribution characteristics of the LCCA were ...
Zhaosheng Meng, Qingliang Zeng, Kuidong Gao, Shuai Kong, Peng Liu, Lirong Wan   +5 more
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Deformation characteristics and stability control of a gateroad in fully mechanized mining with large mining height

Arabian Journal of Geosciences, 2018
The gateroad cross-section is large, and the surrounding rock has a low strength in the fully mechanized coal mining face with a large mining height of 6.7 m. Moreover, under extremely high support pressure in the fully mechanized coal mining face, the gateroad deformation is usually considerable, and a series of accidents such as roof falling disaster
Hong-hu Yuan, Ren-liang Shan, Xue-gui Su
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