Anti-void monitor for tunnel lining concrete vault

Abstract

The invention discloses an anti-void monitor for a tunnel lining concrete vault. The anti-void monitor is used for preventing voids from being generated in the tunnel vault and is installed inside a distribution box of a tunnel lining trolley, and a liquid level relay, a contactor and an audible and visual alarm are arranged on a control circuit; one port of the liquid level relay is embedded into the highest point of the lining vault through a wire, and the other port of the liquid level relay is embedded into the second highest point of the lining vault through a wire; the highest point and the second highest point of the vault are communicated through vault lining water-entraining concrete, the contactor on the control circuit controls the audible and visual alarm to be started, concrete reaches the highest point, the concrete is poured to the vault without voids, and then the audible and visual alarm can give an alarm in a communicated mode. The anti-void monitor for the tunnel lining concrete vault is reasonable in structure, safe and reliable, monitors concrete pouring in real time, effectively prevents vault voids from being generated, guarantees the entity quality of the concrete, and effectively achieves structure safety and durability of the concrete.

Description

technical field [0001] The invention relates to an automatic monitor used in tunnel lining concrete construction, in particular to a tunnel lining concrete vault air-raid shelter monitor. Background technique [0002] In tunnel construction, unevenness of the initial support surface of the tunnel vault is ubiquitous. When the lining concrete is poured to the vault, it is impossible to judge whether the concave part of the concrete is filled. If the concrete is not filled, the vault will form a cavity, and the lining structure will not be able to adhere closely to the primary support surface. The quality of this kind of tunnel vault is not good, and at the same time, the thickness of the lining is insufficient, and the durability of the structure cannot be guaranteed. Security risks. [0003] Since the concrete lining space of the vault is a closed space, it is impossible to judge whether the lining is filled by visual inspection, and there is no effective means of monitori...

AI Technical Summary

Problems solved by technology

When the lining concrete is poured to the vault, it is impossible to judge whether the concrete is filled with the concave part

If the concrete is not filled, the vault will form a cavity, and the lining structure will not be close to the primary support surface. The quality of this kind of tunnel vault is not good, and at the same time, the thickness of the lining is insufficient, and the durability of the structure cannot be guaranteed. Security risks

[0003] Since the concrete lining space of the vault is a closed space, it is impossible to judge whether the lining is filled by visual inspection, and there is no effective means of monitoring and inspection. Only after the concrete pouring of the vault is completed, non-destructive testing methods such as radar are used to check whether there is a void in the vault

However, after the vault concrete is poured, the re-inspection is an after-the-fact control. If there is a void, the quality problem has become a fait accompli and it is difficult to deal with the quality

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