Temperature control method and device suitable for reservoir dam body in cold region

Abstract

The invention discloses a temperature control method and device suitable for a reservoir dam body in a cold region. According to the temperature control method suitable for the reservoir dam body in the cold region, when river water is input into a cooling water pipe in the dam body through a pipe to conduct cooling control in the dam body, a mixed cycle water tank is arranged close to the dam body in advance, and the river water used as cooling water is guided into the mixed cycle water tank firstly and then conveyed to the cooling water pipe to cool the dam body; meanwhile, the cooling water flowing out of the cooling water pipe is also guided into the mixed cycle water tank to be mixed with the river water in the mixed cycle water tank; and in this way, the temperature difference between the inner portion and the outer portion of the dam body can be lowered, and therefore the dam body is protected against cracks. According to the temperature control method and device suitable for the reservoir dam body in the cold region, the manner that the cycle water and the river water are mixed is adopted, the temperature of the cooling water is raised appropriately, the temperature of concrete in the dam body is made to slowly approximate the air temperature, the concrete of the dam body is protected against a cold strike, and therefore the probability and risk of concrete cracks are lowered; and in this way, the water circulating effect and the quality of mass concrete in the cold region are guaranteed.

Description

technical field [0001] The invention relates to a temperature control method and device suitable for reservoir dams in cold regions, and belongs to the technical field of anti-cracking of reservoir dams in cold regions. Background technique [0002] In cold regions, because the ambient air temperature is very low, the temperature in the reservoir dam body is relatively high, and due to the large temperature difference between the inside and outside of the dam body, the reservoir dam body is prone to cracks. [0003] In order to prevent cracks in the dam body of the reservoir, the usual practice is to embed cooling pipelines in the dam body when constructing the dam body, and take away the heat generated by the temperature rise of the internal hydration heat of the concrete through the cooling water in the cooling pipeline, thereby To achieve the purpose of reducing the maximum temperature inside the concrete and reducing the risk of cracks in the concrete. [0004] The exis...

AI Technical Summary

Problems solved by technology

Therefore, the use of low-temperature river water to cool down the dam body in the medium term will cause a "cold shock" to the concrete inside the dam body, which increases the probability and risk of cracks in the concrete, and cannot guarantee the water flow effect and mass concrete in cold regions. quality

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