Testing device and method for testing thermal insulation effect of tunnel in cold region

Abstract

The invention discloses a test device and method for testing the thermal insulation effect of a tunnel in a cold region. The test device comprises: a tunnel model; an electric heat tracing heating layer which is laid on the inner wall of the tunnel model, wherein the power supply end of the electric heat tracing heating layer is connected with the power supply; an air supply device which is arranged outside a hole in one end of the tunnel model and used for inputting air flow into the tunnel model, wherein the air flow direction is consistent with the axis direction of the tunnel model; and a plurality of environment acquisition devices which are uniformly distributed in the tunnel model. According to the invention, the tunnel model is utilized to simulate the heat transfer conditions of the actual tunnel thermal insulation layer and lining, and the air supply device is arranged to input the air flow into the tunnel model to achieve the real simulation of the actual climate environment in the tunnel; the electric heat tracing heating layer is used for actively heating the interior of the tunnel, and actual active heating and heat preservation setting in the tunnel is simulated; by arranging the environment acquisition devices, the acquisition of environment parameters is achieved, and the test of the thermal insulation effect is met; the testing device and method can be used for indoor simulation tests of different tunnels, and is simple in structure, high in accuracy and low in cost.

Description

Technical field[0001]The present invention belongs to the technical field of tunnel engineering, and in particular, the experimental apparatus and method for testing the insulation effect of cold zone tunnel.Background technique[0002]The construction of the highway tunnel is gradually increased. The number of tunnels in high latitudes is also increasing; many of the high-precision tunnels in the high-definition area have greatly affect the strength of lining, reducing the service life of the tunnel and seriously affecting driving safety and comfort .[0003]In order to solve this problem, it is necessary to keep the tunnel. Existing insulation measures include active heating measures and set insulation layers; testing the actual heat preservation effect on the thermal temperature of the electric heating, can be used according to the actual natural conditions of the tunnel Take effective and economical heating layer design, which has important economic and engineering significance for ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a test device and method for testing the thermal insulation effect of tunnels in cold regions, so as to solve the technical problems that the existing tunnel thermal insulation facility field tests are difficult and costly

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