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| Study on the relationship between mining thickness and peak position of advance bearing pressure based
on measured analysis |
| Li Zhiqiang1, Su Li1, Li Yang2 |
| 1. Sanyuan Grottoes Coal Industry Co., Ltd Jinneng Holding Coal Industry Group, Changzhi 046000, China; 2. North China Institute of Science and Technology, Beijing 101601, China |
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Abstract There are many factors affecting the peak position of advance bearing pressure, and the mining thickness is an important factor. In order to analyze the influence of mining thickness on the peak position of advance bearing pressure in fully mechanized top caving face, No. j7401Face in Helin Mine was taken as the research object. Through field measurement and theoretical analysis, the relationship between mining thickness and peak position of advance abutment pressure in fully mechanized top caving face was deeply studied. The results showed that when the mining thickness was the same, the peak position of advance bearing pressure was basically the same; When the mining thickness increased, the distance between the position of advance bearing pressure and the coal wall of the working face increased. The research conclusion of this paper could be used to predict the peak position of advance bearing pressure under different mining thickness, and there was a good guiding role and reference significance for roadway maintenance and support scheme selection.
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