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(一) 定义 新奥法的构思是利用隧洞围岩或土层的本身形成支撑环,成为支护的组成部分,同时,必须遵守以下原则: 1.考虑围岩的地质力学特性。 2.准时采用合适的支护措施以避免不利的应力和变形状态。
(A) The definition of the new Austrian law is the concept of the use of tunnel surrounding rock or soil itself form a support ring, a support component, at the same time, must comply with the following principles: 1. Consider the geomechanical properties of the surrounding rock. 2. Use appropriate support measures on time to avoid adverse stress and deformation conditions.