Study On Model Test And Numerical Modeling Of Anti-explosion Effect Of Underground Cavern Reinforcement With Prestressed Anchor

With the development of the stratagem situation at the present, the destruction subject to cavities under the underground explosion condition becomes more intensive. The safety performance bearing explosion load for Head Command engineering, large span underground garages for Navy and Air Force, concealed garages for Naval Ships, and newbuild, rebuild, extension for the large military engineering work need to be enhanced. It is doubtless that to improve the anti-explosion capacity of cavity wall rocks is the important way for enhancing the anti-force grade of the defensive engineering work. We put forward that to reinforce cavities with the prestressed anchorage can increase the anti-explosion performance of cavities. Therefore, the systematic study on this object is made in this subject.In this subject, the similar material model in small scale is used for the anti-explosion test, which is combined with the corresponding dynamic value calculation analyses. The new developed anti-explosion structural model test devices are used and the integral anti-explosion reinforcement effect comparative simulation tests and study are made on cavities and free type anchor cables, full length grouted one and free type anchor cables as well as the full length type and the half length type anchor cables. On the basis of the model explosion tests of cavities reinforced with different types of anchor cables, the dynamic calculation model of FLAC-3D calculation software is used for further...