Storehouse surface thermal storage and heat preservation module for roller-compacted concrete gravity dam in severe cold region

Abstract

The invention discloses a storehouse surface thermal storage and heat preservation module for a roller-compacted concrete gravity dam in a severe cold region. The storehouse surface thermal storage and heat preservation module comprises an upper box body, a lower box body and an anti-freeze durable elastic rubber bag. The bottom face of the upper box body is not provided with a plate. The bottom face of a side frame of the upper box body is provided with a plurality of downward inserted type bolts. The lower box body is matched with the upper box body. The top face of the lower box body is not provided with a plate. The top face of a side frame of the lower box body is provided with a plurality of upward socket type nut holes matched with the inserted type bolts. The socket type nut holes protrude out of the top face of the side frame of the lower box body. The upper box body and the lower box body are connected into a whole by inserting the inserted type bolts into the socket type nut holes. The anti-freeze durable elastic rubber bag is provided with an exhaust nozzle and a hot seal opening. The upper box body and the lower box body which are assembled into a whole are sleeved with the anti-freeze durable elastic rubber bag. After the hot seal opening is sealed, air in the anti-freeze durable elastic rubber bag is exhausted through the exhaust nozzle to form a sub-vacuum state. By adopting the storehouse surface thermal storage and heat preservation module, the problem existing in coordination and unification of operability, economy and high-efficiency of concrete storehouse surface heat preservation is effectively solved.

Description

technical field [0001] The invention relates to a thermal insulation module, in particular to a heat storage and thermal insulation module for a storehouse surface of a roller compacted concrete gravity dam in a severe cold area, and is used for construction in a cold season or during an intermission in winter. Background technique [0002] The traditional methods of concrete insulation and maintenance in low temperature seasons include heat storage method, greenhouse method, electric heating method and steam method. The greenhouse method is very expensive, and is suitable for places with small volume and concentrated construction; the electric heating method uses the concrete itself as a resistance, and the power consumption of electric heating is large, so it is only suitable for low-cost and small-component concrete; the steam method is complex in construction, There are many restrictive conditions to achieve good results, and it is difficult to meet the requirements at t...

AI Technical Summary

Problems solved by technology

During the construction process, a layer of plastic film with a thickness of 0.6 mm was used for thermal insulation of the overwintering surface of the roller compacted concrete dam, and then two layers of 2 cm thick polyethylene insulation quilts were laid on it, and 13 layers of 2 cm thick cotton quilts were laid on it, and finally A layer of three-proof canvas is laid on the top. In order to strengthen heat preservation and prevent side wind from entering, a windbreak wall with a height of 1.0m and a width of 0.8m is built with sand belts on the downstream side of the wintering surface. Spray 10cm thick polyurethane rigid foam within the scope, the insulation measures are cumbersome and complicated, the workload increases, the project cost is high and the insulation effect is not significant

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