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《Chinese Journal of Underground Space and Engineering》 2006-S2
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Study on the Landslide Mechanism and Treatments at the Portal of Lishiguan Tunnel

FAN Jian-hai~1 ZHANG Tao~(2,3) GUO Gang~1 WANG Yuan-han~2 (1.Hubei Province Shiman Expressway Construction Headquarters,Shiyan 442011,P.R.China; 2.School of Civil Engineering,Huazhong University of Science and Technology,Wuhan 430074,P.R.China; 3.Navy Engineering Design and Research Institute,Beijing 100071,P.R.China)  
Lishiguan Tunnel is a tunnel of Shiman(Shiyan-Manchuanguan)Expressway with small interval.In the tunnel construction there were two landslides occurred.The progress and treatment of the landslide have been ana- lyzed in this paper.The reasons of the landslide,especially for the second landslide,are studied.The elasto-plastic finite element analysis,strength reduction method and ANSYS software are used for the calculation.Some conclusions have been obtained.The analytical results show that the cutting slope at the tunnel mouth should not be too large,so that the mountain body may not be disturbed.Also,the construction technique should be followed and the quality should be guaranteed.If the dangerous cases took place,the consolidated methods should be taken and the dangerous situation may not be enlarged.
【CateGory Index】: U457.3
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