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| Keywords | |
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block theory |
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UNWEDGE software |
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underground storage |
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stability |
| Authors | |
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LIU Xiang-Fei-1 |
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QI Wei-1 |
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GAO Feng-Huai-2 |
| PubMed | |
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Article by Liu, X. F. 1 |
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Article by Qi, W. 1 |
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Article by Gao, F. H. 2 |
Application of block theory in stability analysis on the surrounding rocks of LPG underground storage
LIU Xiang-Fei-1, QI Wei-1, GAO Feng-Huai-2
1�� College of Construction Engineering��Jilin University��Changchun 130026��China; 2�� Engineering of Geotechnical��East-China Survey Design �� Research Institute of China Petroleum Natural Gas Group Company��Qingdao 266071��Shandong��China
The research and calculation of the key block of 1K0 + 125 �� 145 section in water curtain gallery at Qingdao LPG underground storage have been done using UNWEDGE software��and obtained four removable blocks�� Block 1 was a self-stable block and located at the bottom of the gallery�� Block 4 and block 5 located at the left and right walls separately��with the security factors of 1. 945 and 3. 385��can meet the basic requirements of self-stable�� Block 8 located on the top of the gallery with large size��heavy weight and a safety factor of 0��required special supporting�� Supporting program was put forward on the analysis of the results�� By comparison of the results before and after supporting��it can be seen that the security factor increased significantly�� The security factors of block 8 under bolting support and anchor support were 1. 278 and 6. 406��respectively�� It is clear that the shotcrete was more effective in improving the security factor of blocks��and the supporting program can meet the safety requirements of the project��