Analysis and control of hydraulic support stability in fully-mechanized longwall face to the dip with great mining height |
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| Authors: | Xin-zhu Hua Jia-chen Wang |
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| Affiliation: | [1]The MOE Key Laboratory of Coalmine Safety and High Efficiency Mining, Anhui University of Science and Technology, Huainan 232001, China [2]School of Resource and Safety Engineering, China University of Mining and Technology Beijing, Beijing 100083, China |
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| Abstract: | The working condition of the hydraulic support in working face can be divided into three kinds of situations in the following:
roof fall and collapse with cavity, advancing support and supporting. Took single support with four-pole in longwall face
to the dip as research object, control method was studied to avoid support instability in three situations mentioned above.
Based on these researches, the major factors of influencing on support stability and its controlling measures were put forward.
According to specific conditions of working face 1215(3), which is fully-mechanized and longwall face to the dip with great
mining height in Zhangji Coal Mine, Huainan Mining Group, the effective measures was taken to control supports stability. |
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| Keywords: | longwall face to the dip fully-mechanized working face with great mining height supports stability control |
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