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本文根据25个复合式衬砌模型试验的资料分析了复合式衬砌的承载能力.描述了加载过程中复合式衬砌的变形发生、发展及其破坏状态.探讨复合式衬砌的受力机理,认为喷射混凝土支护层与模注混凝土层的受力传递关系,是接触作用力与反作用力的关系.模注混凝土层可认为是一个独立的衬砌“结构体”.它对复合式衬砌的承载能力起着重要的作用.复合式衬砌的破坏主要由于模注混凝土层的破坏结果.
In this paper, the load carrying capacity of composite lining is analyzed based on the data of 25 composite lining model tests, the occurrence, development and failure state of composite lining during loading process are described.The stress mechanism of composite lining is discussed, The relationship between the force and transmission of the support layer and the injection-molded concrete layer is the relationship between the contact force and the reaction force. The injection-molded concrete layer can be regarded as an independent “structure” of the lining, which plays a role in bearing capacity of the composite lining Important role. The failure of composite lining is mainly due to the destruction of the concrete injection molding results.