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《Journal of Yangtze River Scientific Research Institute》 2008-05
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Geo-stress Field's Regression Analysis and Its Influence on Engineering Stability of Some Tunnel in Western Hubei Province

ZHOU Chun-hua,GUO Xi-feng,ZHOU Li-ming,LIU Yuan-kun(Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China)  
For the surrounding rock's unstability during the soft rock tunnel excavation,especially in combination with a deep buried and long tunnel in western Hubei Province,the method of regional geo-stress field's regression analysis based on in-situ measured data is employed.The digital simulation of surrounding rock's key displacement field and the comprehensive analysis of stability are both introduced.The result shows that the tunnel's measurement regional rockmass is in high stress field,the displacement of the vault arch is relatively large and the stability of surrounding rockmass is relatively poor.The analysis result is in accord with the site phenomenon.The evaluation method applied for geo-stress field and displacement is feasible and available,which can provide some reference for the tunnel excavation.
【Fund】: 中央级公益性科研院所基本科研业务费资助项目(YWF200816);; 水利部岩土力学与工程重点实验室开放研究基金资助项目(G07-12)
【CateGory Index】: U452.11
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