Abstract:The model explosion test methods are adopted to study the anti-explosion effect of prestressed cable reinforced cavern.In this paper,the characteristics of anchorage cable prestress changes caused by explosion are specially researched,and the features of anchor cable prestress changes of different types of anchor cable reinforced caverns are analyzed and some regulations have been obtained. The corresponding numerical calculations are also carried out. The reliability of the test results is proved,and the suggestions to the anti-explosion reinforced cavern design in anchor engineering are put forward.