Arch frame positioning system and method based on arch frame installation machine for tunnel construction

Abstract

The invention relates to an arch frame positioning system and a method based on arch frame installation machines for tunnel construction. The system comprises a laser range finder and a central controller. The laser range finder is installed on the outer part of the arch frame installation machine, has multi-degrees of freedom rotation function, and is used for measuring a distance between a lasersource point and a target point position of two rows of assembled arch frames. The central controller is connected with the laser range finder, is used for receiving distance data acquired by the laser range finder, obtains a distance between the laser source point and a longitudinal corresponding target point of a to-be-assembled arch frame through geometric relationship calculation, so as to calculate an angle value that the laser source point needs when the laser source point directs to the longitudinal corresponding target point, and sends a corresponding angle rotation instruction to thelaser range finder. According to the arch frame positioning system and the method based on arch frame installation machines for tunnel construction, the accurate and automatic position of the longitudinal spacing and a circumferential section joint of the to-be-assembled arch frame can be achieved, so as to effectively ensure the installation precision of the arch frame.

Description

technical field [0001] The invention belongs to the field of mechanized construction of traffic tunnel engineering, and in particular relates to an arch positioning system and method based on an arch installation machine for tunnel construction. Background technique [0002] The arch frame in the tunnel with weak surrounding rock is the main component of the shotcrete anchor support. The lithology of the surrounding rock of the tunnel determines the spacing of the arch frame layout and the type of the arch frame in the shotcrete anchor support. The installation accuracy of the arch frame is directly related to the shotcrete anchor support. If the positioning is inaccurate, it is easy to cause the instability of the primary support structure. [0003] At present, the arch installation machine used in the mechanized construction of tunnels has replaced the initial manual assembly of the arch, but it is mainly used for mechanically grabbing the arch and manpower assists in the ...

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Problems solved by technology

[0002] The arch frame in the tunnel with weak surrounding rock is the main component of the shotcrete anchor support. The lithology of the surrounding rock of the tunnel determines the spacing of the arch frame layout and the type of the arch frame in the shotcrete anchor support. The installation accuracy of the arch frame is directly related to the shotcrete anchor support. quality, if the positioning is inaccurate, it is easy to cause the instability of the primary support structure

[0003] At present, the arch installation machine used in the mechanized construction of tunnels has replaced the initial manual assembly of the arch, but it is mainly used for mechanically grabbing the arch and manpower assists in the assembly. The positioning of the arch still needs the means of manual measurement , the automatic positioning function is relatively poor, and the assembly accuracy is difficult to guarantee accurately

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