Depth And Blast Excavation Footage Of Tunnel Beneath The Airport Runway Study

With the development of the national economy,a lot of people went into thecity,which made the city is biger and the urban population is more dense. The citytraffic becomes congested, so people began to develop the underground traffic.Underground transit line can greatly ease the traffic pressure, however, theconstruction of the Underground Railroad also had a major impact on the city’sbuildings. At present,much sunway are below the airport and sunway constructionmmade a significant impact on the airport runway. Domestic research in this area is nota lot, it is necessary to strengthen research in this area.Based on the ChongQing No.3light track tunnel under the Jiangbeiairdrome,this article use special analysis software ANSYS/ls-dyna to simulate blastingconstruction, in order to select the best blasting construction program, make theproject to be both safe and economic. The paper mainly do the following severalaspects:①It made a brief introduction for drilling and blasting method of constructiontechnology,and focuses on the construction of smooth blasting in blasting schemedesign method.②The article detailed explain the blasting seismic waves, including the type ofblasting seismic waves and its characteristic,and introduced the national relevantspecification of blasting construction.③It introduced the professional analysis software ANSYS/LS-DYNA, focuseson the instructions on how to use the software to simulate the blasting construction.④By simulating the tunnel blasting construction,it sums up some of the lawabout tunnel blasting.And consult with the standard requirement, it makes sure therational buried depth and the best footage depth of the tunnel.It has guidingsignificance for the construction of the project.