Mixed constructing method of high concrete gravity dam and high concrete gravity dam

Abstract

The invention relates to a mixed constructing method of a high concrete gravity dam with the height exceeding 70 meters and the high concrete gravity dam. Normal concrete is adopted for conducting pouring on dam blocks which must be poured through normal concrete, however, roller compacted concrete is adopted for conducting pouring on other dam blocks which do not need to be poured through normal concrete and requires increasing of the construction progress. A conventional grouting system is used for conducting grouting on longitudinal joints between the dam blocks. A repeated grouting system is used for conducting grouting on the longitudinal joints multiple times, wherein the longitudinal joints are opened again. According to the high concrete gravity dam constructed through the constructing method, partial dam blocks are normal concrete dam blocks poured through the normal concrete, and the rest of the dam blocks are roller compacted concrete dam blocks poured through the roller compacted concrete. According to the high concrete gravity dam, partial dam blocks are adjusted to be the roller compacted concrete dam blocks, and therefore the field requirement for increasing the construction progress is met; the joint face grouting processing measure is adopted, and therefore the risk that the longitudinal joints between the dam blocks are opened due to the fact that hydration heat is not synchronous because the properties of the concrete adopted in all the dam blocks are different is eliminated.

Description

technical field [0001] The invention relates to a method for building a high concrete gravity dam with a height exceeding 70 meters and a high concrete gravity dam built by the method. Background technique [0002] Concrete gravity dams are generally divided into normal concrete dams and roller compacted concrete dams. [0003] In general, normal concrete dams with smaller dam heights have smaller dam bottom widths, lower dam body temperature stresses, and less risk of dam cracks, so they are usually poured through warehouses without longitudinal joints. [0004] For high normal concrete dams, the bottom width of the dam is relatively large, such as pouring through the warehouse, the temperature stress of the dam body is relatively high, the pressure of on-site temperature control and crack prevention is relatively high, and the risk of cracks in the dam is relatively high. The body is divided into several upright "columnar blocks", also known as "dam blocks", such as figu...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to propose a high concrete gravity dam mixed dam construction method and high Concrete gravity dam, while ensuring the overall structural safety of the high concrete gravity dam, improve the construction progress of the high concrete gravity dam

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