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隧道监控法是建立在现代控制论的概念上,它是把地下工程作为一个控制系统,利用反馈原理,通过调整围岩变形速率和控制围岩位移,使围岩充分发挥其自稳能力的一种方法;地下工程特性线是集中反映围岩的变形速度变化和支护影响的;为了避免由于控制不及时而导至围岩发生破坏,必须保证反馈调节速度大于围岩的变形速度,才能达到有效控制,文中提出特性线控制图设计步骤和换算位移的方法。
The tunnel monitoring method is based on the concept of modern cybernetics. It uses the underground engineering as a control system and uses feedback principles to adjust the surrounding rock deformation rate and control the displacement of the surrounding rock so that the surrounding rock can fully exert its self-stabilizing ability. The method is characterized by the fact that the characteristic lines of underground engineering reflect the change of deformation velocity and supporting influence of the surrounding rock; in order to avoid that the control of the surrounding rock is not timely, the feedback adjustment speed must be greater than the deformation speed of the surrounding rock to achieve Effective control, the design steps of the control chart of the characteristic line and the method of converting the displacement are proposed.