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建立了同步爆扩地下空间及混凝土壁支护相似模型试验系统，进行了３种爆扩方式、５种配比混凝土的模型试验．分析了土体爆扩变形特性和混凝土爆扩触变特性，提出了同步爆扩地下空间及混凝土壁支架的最佳参数和混凝土最佳触变时间的确定方法
A similar model test system for simultaneous explosion-expanded underground space and concrete wall support was established, and three kinds of explosion-expansion methods and model tests for five types of concrete were conducted. The characteristics of explosion and expansion of soil and the properties of explosion and thixotropic deformation of concrete were analyzed. The optimal parameters of simultaneous explosion-expanded underground space and concrete wall bracket and the method to determine the optimal thixotropic time of concrete were proposed.