Cutting device and method for heat-insulation layer material in cold region tunnel model test

Abstract

The invention discloses a cutting device and method for a heat-insulation layer material in a cold region tunnel model test. The cutting device comprises a device body inner cavity internally providedwith a power supply system; an operation table top is arranged on the top face of the device body inner cavity and connected with a cutting assembly and a baffle fixing assembly through bearings; thebaffle fixing assembly comprises a first positioning baffle, a second positioning baffle and a top plate which are used for fixing the to-be-detected material; the first positioning baffle and the second positioning baffle are fixed to the operation table top, and the top plate is arranged above the cutting assembly; and the cutting assembly can rotate between the first positioning baffle and thesecond positioning baffle to cut the to-be-detected material. The heat-insulation layer material can be subjected to circular-arc-shaped cutting aiming at different model tunnel radii, the cutting thickness can be accurately controlled and rapidly adjusted, and the flatness of the cutting surface is ensured; and the cutting device is easy to use, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of tunnels, in particular to a device and method for cutting heat insulation layer materials in tunnel model tests in cold regions. Background technique [0002] With the promotion of the western development strategy, a large number of tunnels are built in high altitude and severe cold areas. In order to prevent frost damage in tunnels in cold regions, antifreeze and heat insulation materials are usually laid on the tunnel lining structure. The temperature and ambient temperature in the tunnel are constantly changing. If the insulation layer is too thick, the material will be wasted if it is too conservative; Material laying thickness is a key indicator of antifreeze and heat preservation. [0003] Commonly used heat insulation materials for tunnels include polyurethane, phenolic, and Folkie insulation boards. At present, a large number of scholars have carried out indoor tunnel model tests. When designing...

AI Technical Summary

Problems solved by technology

In the arch waist and vault of the model tunnel, it is difficult to perfectly fit the tunnel lining concrete structure with a rectangular insulation board, and it is necessary to cut the insulation layer material in an arc shape; in order to obtain insulation boards of different thicknesses, at present, usually use Manual cutting with saw blades or blades. Different types of heat insulation materials have different materials. This method has the problems of difficult to accurately control the cutting size and uneven cutting surface.

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