(1. Key Laboratory of Transportation Tunnel Engineering，Ministry of Education，Southwest Jiaotong University，Chengdu，Sichuan 610031，China；2. School of Civil Engineering，Southwest Jiaotong University，Chengdu，Sichuan 610031，China)
Abstract：The study has developed a laboratory test to simulate the excavation，supporting and deterioration process of primary support of the deep hard rock tunnel. In the paper，variation rules of displacement，load and internal force of the secondary lining in the deterioration process of primary support are analyzed. The study proves that in the primary support deterioration period or even in the failure process，there are different effects between the shotcrete and the bolts. The effect of the bolts，which has step characteristics，is much more obvious than that of the shotcrete. The increasing trends of displacement，load and internal forces are all firstly rising up slowly and then accelerating，finally becoming steady. In the vault and side walls，such mechanical phenomenon is typical. After calculation of the lining security，we found that the safety extent is satisfied. The design is relatively conservatory.
仇文革1，2，冯冀蒙1，2，陈雪峰1，2，王 航1，2. 深埋硬岩隧道初期支护劣化过程衬砌力学特性试验研究[J]. 岩石力学与工程学报, 2013, 32(1): 72-77.
QIU Wenge1，2，FENG Jimeng1，2，CHEN Xuefeng1，2，WANG Hang1，2. MODEL TESTING RESEARCH ON LINING MECHANICAL VARIATION WITH DETERIORATION PROCESS OF PRIMARY SUPPORT IN DEEP HARD ROCK TUNNEL. , 2013, 32(1): 72-77.
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2013, Vol. 32 
