| In the tunnel construction process the interaction and coordination reasonable is very important between supporting and surrounding rock,especially the coordination reasonable of early support and surrounding rock.In the tunnel the initial support structure it is also very critical component,which is the reason why people focus on the subject,and has been very much meaningful research results.But it is very complex in different geological conditions about interactions between initial support and surronding rock,resulting in a theoretical analysis of this area is not very perfect,there are still many shortcomings, which we need to be more deep researches for those deficiencies.Therefore,the main question is the initial suppot of the tunnel for the study of this article,initial support for architecture of the early forms of support,including force characteristics and engineering features about plain concrete, reinforced concrete,and steel reinforced shotcrete.To establish model of “load structureâ€,which approach based on the initial tunnel support different forms. |