Rigidity-flexibility-coupled tunnel monitoring support comprehensive system and method

Abstract

The invention discloses a rigidity-flexibility-coupled tunnel monitoring support comprehensive system and method. The system comprises a plurality of parallel support arched racks and is characterized in that each support arched rack comprises a plurality of rigid support units which are sequentially connected, a flexible synthetic-material pad layer is arranged on the outer side of each rigid support unit, a primary concrete support layer is arranged on the outer side of each flexible synthetic-material pad layer, a secondary concrete spraying layer is arranged on the inner side of each rigid support unit. The system has the advantages that the overall support system is formed by the rigid support units, the flexible synthetic-material pad layers and the primary concrete support layers; distributed optical fibers and measuring devices are embedded into the flexible synthetic-material pad layers, and real-time monitoring of the whole section surrounding rock deformation of tunnels is achieved; the problems that an existing tunnel support system cannot effectively, reasonably and economically control surrounding rock deformation, and section surrounding rock cannot be simply and precisely monitored in real time are solved.

Description

technical field [0001] The invention relates to a rigid-flexible coupled tunnel monitoring and supporting comprehensive system and method. Background technique [0002] With the implementation of the national "Belt and Road" strategy, the construction of a large number of basic transportation facilities is imminent, and underground engineering is an important part of it. The excavation of underground caverns such as tunnels often faces a series of problems such as deformation, damage, and instability of surrounding rocks. The traditional method of controlling deformation of surrounding rocks in tunnels often adopts the method of primary sprayed concrete and steel arch support. To a certain extent, the deformation of the surrounding rock is controlled, but the traditional concrete has a high rebound rate and poor cohesive force, which often results in many voids in the primary sprayed concrete layer, and cannot effectively make the primary sprayed concrete and the surrounding...

AI Technical Summary

Problems solved by technology

Due to the generally large section of the tunnel, the completion of the above work requires the use of construction trolleys, electric welders and many technical personnel to participate, and delays the tunnel construction process, lacking economy and convenience

[0004] In addition, the traditional surrounding rock deformation monitoring belongs to the category of fixed-point monitoring, which cannot realize the comprehensive monitoring of the tunnel section, and most of the monitoring components are exposed, which are easily damaged by construction and cannot achieve accurate and effective monitoring.

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