Tunnel surrounding rock scanning and observing system based on dual-shield TBM technology

Abstract

The invention discloses a tunnel surrounding rock scanning and observing system based on a dual-shield TBM technology. The system comprises multiple scanners and an upper computer; the upper computeris positioned at the axis of the shield of an auxiliary propulsion oil cylinder position; the scanner is installed at each observing hole of the shield of the cross section of the auxiliary propulsionoil cylinder. According to the system provided by the invention, the scanner is installed at the preset observing hole on the rear shield to achieve direct measurement; data is collected via multiplecoordinate systems and processed in a unified manner; a scanning system for propelling observation on the profile of the tunnel surrounding rock and rock appearance by accompanying tunneling similarto well logging during drilling is formed; drawing of a two-dimensional profilogram of the cross section of a tunnel, building of a three-dimensional model of the actual excavation face of the tunnel,surrounding rock appearance imaging of the cross section of the tunnel, and three-dimensional rock appearance imaging of the actual excavation face of the tunnel within a certain angle range of the top of the whole tunnel can be achieved; in addition, the scanners and the upper computer are installed in a modularized manner, and the internal different modularized measurement devices can be changed according to needs, to achieve more functions.

Description

technical field [0001] The invention relates to the technical field of double-shield TBM, in particular to a tunnel surrounding rock scanning and observation system based on the double-shield TBM process. Background technique [0002] Double-shield TBM construction is essentially a non-drilling and blasting tunnel excavation technology, which is suitable for long tunnel construction in hard rock caverns with various adverse geological conditions. Double-shield TBM is a kind of TBM type, its construction feature is that the excavation and lining of the tunnel can be carried out simultaneously, and there are two modes of excavation (double shield mode and single shield mode), which are convenient for the construction of the weak geological fracture zone stratum, from the double shield tunnel boring machine From the characteristics, we can see the advantages of high excavation efficiency, good hole quality, economy, safety, and environmental protection. During the construction ...

AI Technical Summary

Problems solved by technology

[0002] Double-shield TBM construction is essentially a non-drilling and blasting tunnel excavation technology, which is suitable for long tunnel construction in hard rock caverns with various adverse geological conditions. Double-shield TBM is a kind of TBM type, its construction feature is that the excavation and lining of the tunnel can be carried out simultaneously, and there are two modes of excavation (double shield mode and single shield mode), which are convenient for the construction of the weak geological fracture zone stratum, from the double shield tunnel boring machine From the characteristics, we can see the advantages of high excavation efficiency, good hole quality, economy, safety, and environmental protection. During the construction process of the double-shield roadheader, it is necessary to analyze the profile of the tunnel surrounding rock section, but the existing technology has difficulties in dealing with the contact interface. , signal attenuation and less measurement parameters, it is impossible to observe and collect the morphology characteristics of the just-excavated surrounding rock in real time, and it also lacks the function of building a 3D model of the inner contour of the tunnel. For this reason, we propose a TBM technology based on double shields Tunnel Surrounding Rock Scanning and Observation System

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