Study on Shotcrete with Steel Sets' Stability Analysis of Western Underground Projects
ZOU Hongying;LUO Jin;WEI Ping;LIANG Chengyan;Yellow River Engineering Consulting Co.,Ltd.;Xiaolangdi Water Conservancy & Hydropower Project Co.,Ltd.;
For tunnel,earlier support needs a larger amount of supports,while later support will be more dangerous. Thus,timely support can be more effective. Due to the small thickness of initial support,using 3D numerical method will lead too much units,a very long time and quite different from the actual situation. Here based on CCS Hydropower Station in Ecuador,using the Generalized Hoek-Brown failure criterion,the paper introduced PHASE Ⅱ software and relate analysis method which were used widely,more mature in western for the analysis of support time and shotcrete with steel sets. The results suggest that the support time is when the stress releases 40%-50% for CCS power station auxiliary tunnels,the steel sets' load percentage is less 40% in shotcrete with steel sets,the tunnel initial supports which based on western related specification can meet the stability requirement.
【CateGory Index】： TV554