Rock wall crane beam concrete temperature control method, device and system

Abstract

The invention discloses a rock wall crane beam concrete temperature control method, device and system. External water is injected into a heating water tank through a make-up water pipe, is heated to be injected into a constant temperature water tank, flows into the end of rock wall crane beam concrete through a pipeline pump and a water inlet pipe, and is connected with a water spraying pipe to bepaved to the concrete surface; cofferdams are built on a rock wall crane beam; a drain hole is reserved in the other end of water inlet pipe to be connected with a water return pipe; water returns into the heating water tank to form a temperature control maintaining water circulating system; and a layer of plastic film and a quilt cover the upper part of a concrete cabin surface to form a thermalinsulating layer. The concrete surface temperature is adjusted through adjusting the water temperature to enable the internal and external temperature difference of concrete to be less than 20 DEG C,so that the internal and external temperature difference of concrete carries out thermal insulation and heat storage on the external part of concrete and sealing on an organic thermal transmission medium to ensure constant and uniform radiation of hydration heat so as to reduce cracks in concrete caused by excessively large temperature difference; and generation of surface desiccation cracks is reduced through isolation moisture retention and water curing duration prolonging at the external part.

Description

technical field [0001] The present application relates to the technical field of rock wall crane beam concrete for underground powerhouses, and in particular to a method, device and system for temperature control of rock wall crane beam concrete. Background technique [0002] The rock wall crane girder is the most difficult part in the construction of underground workshops and has the highest quality requirements. The concrete forming quality of the rock wall crane girder is directly related to the operation safety of the bridge crane. Therefore, the reduction of the cracks of the rock wall crane beam is beneficial to the operation safety of the bridge crane. However, the main factor affecting the cracks of such concrete is the temperature crack. Temperature control measures are adopted, usually by pre-embedded cooling water pipes, water cooling method, by adjusting the water temperature to adjust the internal temperature of the concrete, so that the temperature difference b...

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Problems solved by technology

[0003] The purpose of this application is to provide a concrete temperature control method, device and system for rock wall crane beams, so as to solve the problem that too many cracks occur during the construction of rock wall crane beam concrete in existing large underground caverns, which affects the structural safety.

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