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在地下工程建设中,喷射混凝土支护的应用日益广泛。由于对它的作用机理没有深入了解,因此,喷射混凝土支护的设计在很大程度上还带有经验性。喷射混凝土作为巷道的一种支护手段,是与围岩一起共同承载外来压力的。探讨围岩与喷射混凝土共同作用原因,对于进一步揭示喷射混凝土支护的机理是有帮助的。 (一)粘结力是围岩参与喷射混凝土共同作用的基础地下巷道当采用喷射混凝土支护时,由于喷层与围岩之间接触面粘结力
In the construction of underground projects, the application of shotcrete support is increasingly widespread. Because of its in-depth understanding of the mechanism of action, the design of shotcrete support is largely empirical. Shotcrete as a support means of roadway, together with the surrounding rock to carry external pressure. It is helpful to further reveal the mechanism of shotcrete support by discussing the reason of the interaction between surrounding rock and shotcrete. (A) the adhesive force is the surrounding rocks participate in the common ground of shotcrete Underground roadway when using shotcrete support, due to the spray layer and the surrounding rock contact surface adhesion