Intelligent circulating liquid feeding device and intelligent circulating liquid feeding method for lining accelerated corrosion test

Abstract

The invention relates to an intelligent circulating liquid feeding device and an intelligent circulating liquid feeding method for a lining accelerated corrosion test. The device is formed as follows: a corrosive liquid tank with water-seeping bottom is arranged on the top surface in the middle of a lining; a second hydraulic pressure sensor is arranged at the bottom of the corrosive liquid tank; a liquid outlet end of a liquid feeding pipe is arranged in the corrosive liquid tank; a liquid feeding tank is arranged above the lining; an electric stirrer, a solute concentration meter and a first hydraulic pressure sensor are arranged in the liquid feeding tank; the bottom of the liquid feeding tank is connected with a liquid inlet end of the liquid feeding pipe; a flow control valve is serially connected with the liquid feeding pipe; a liquid collecting tank is arranged right under the lining; a third hydraulic pressure sensor is arranged at the bottom of the liquid collecting tank; a liquid return pipe is connected with the lower part of a side wall of the liquid collecting tank; the other end of the liquid return pipe is arranged in the liquid feeding tank; a miniature water pump is serially connected with the liquid return pipe; the electric stirrer, the solute concentration meter, the first, second and third hydraulic pressure sensors and the miniature water pump are all electrically connected with an intelligent control and display system. The intelligent circulating liquid feeding device is used for supplying the corrosive liquid, the acquired test data is more accurate and reliable and more reliable test data can be supplied for the design and construction of a tunnel lining structure.

Description

technical field [0001] The invention relates to a circulating intelligent liquid supply device and a method for accelerated lining corrosion test. Background technique [0002] With the vigorous development of my country's urban rail transit and cross-river and sea-crossing channel projects at the present stage, traffic tunnel projects have gradually become the main scheme of traffic engineering due to their advantages in traffic security performance and relatively safe structure. [0003] Compared with the ground structure, due to the complexity of the underground water and soil environment, under the joint action of water and soil loads and the surrounding erosion environment, the mechanical properties of the lining structure of the tunnel lining will deteriorate and decline after a period of service: on the one hand, erosion Environmentally specific Cl - , Mg 2+ , SO 4 2- Corrosive ions, such as groundwater and seawater, will slowly invade the inner tunnel lining alon...

AI Technical Summary

Problems solved by technology

It is quite different from the actual situation in which the lining starts from the outer peripheral side in contact with the erosive environment in the actual engineering, and there is a big difference in the actual situation of one-sided progressive penetration corrosion, which leads to large errors and low reliability of the experimental data

[0006] Moreover, in the existing lining corrosion test, the lining is completely immersed in the corrosive solution, and the loading equipment cannot be used to load the lining in the corrosive solution, nor can it test the load borne by the lining in the corrosive solution; that is, the lining corrosion test , only for immersion corrosion of the lining without loading

This is inconsistent with the fact that the performance of the lining in the actual engineering is degraded under the simultaneous action of corrosion and load, which makes the experimental results have greater errors and lower reliability. Provide reliable test data for design and construction

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