distribution of side abutment stress in roadway subjected to dynamic pressure and its engineering application
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ID: 228728
2015
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Abstract
The borehole stress-meter was employed in this study to investigate the distribution of the side abutment stress in roadway subjected to dynamic pressure. The results demonstrate that the side abutment stress of the mining roadway reaches a peak value when the distance to the gob is 8 m and the distribution curve of the side abutment stress can be divided into three zones: stress rising zone, stress stabilizing zone, and stress decreasing zone. Further numerical investigation was carried out to study the effect of the coal mass strength, coal seam depth, immediate roof strength, and thickness on the distribution of the side abutment stress. Based on the research results, we determined the reasonable position of the mining roadway and the optimal width of the barrier pillar. The engineering application demonstrates that the retention of the barrier pillar with a width of 5 m along the gob as the haulage roadway for the next panel is feasible, which delivers favorable technological and economic benefits.
| Reference Key |
qiangling2015shockdistribution
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|---|---|
| Authors | ;Yao Qiangling;Zhou Jian;Li Yanan;Tan Yingming;Jiang Zhigang |
| Journal | Nano letters |
| Year | 2015 |
| DOI |
10.1155/2015/929836
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| URL | |
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