【摘要】 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更多还原

【Abstract】 A model testing system to form underground space and concrete support with synchronous blastenlargement method is set up. Model tests for 3 blastenlargement schemes and 5 ratios of concrete are carried out. The properties of soil in blastenlarging deformation and the thixotropic characteristics of concrete are analyzed. The optimum parameters and thixotropic time to build underground space and concrete support with synchronous blastenlargement method are given.更多还原