Construction method for filling mortar combined stone dam

Abstract

The invention discloses a construction method for filling a mortar combined stone dam, which combines a mortar grouting and filling method and a rock-fill dam filling construction process, and solves the problems that a stone masonry structure is inconvenient to use mechanical construction and has low working efficiency, and a rock-fill dam has higher requirement on grain diameters of filling stones, lower material source utilization rate, high manufacturing cost and the like. The construction method comprises the following steps: filling stones in a dam shell till reaching the thickness requirement of a filling layer, flattening the stones, and then carrying out mortar sand removal operation on the top surface of the filling layer, namely directly filling previously prepared cement mortar or cement mixed mortar doped with admixture fly ash into the screened sand quantitatively supplied by a mortar conveying device in gaps of the filled stones through the mortar conveying device to form the mortar combined stone dam similar to the mortar masonry stone dam. The process flow is simple, the application range is wide, the maximum block diameter control and grade matching requirements are not needed, the stone source is abundant, the thickness of the filling layer is large, the roller compaction is not needed, the construction speed is high, the working efficiency is high, the construction cost is reduced, and the formed dam mortar masonry is compact and has good quality.

Description

technical field [0001] The invention relates to a dam body filling process similar to a masonry stone dam, in particular to a method of using cement slurry or cement mixed slurry mixed with additives to fill sand from the top of the dam body into the filling stone, and fill it with mortar grouting Combining the method with the construction technology of rockfill dams, a construction method of scour-filling mortar-rock dams similar to masonry dams is formed, and the stone dams formed by this method can be used to replace mortar-rock dams and rockfill dams. Background technique [0002] The masonry structure is widely used in hydraulic construction and other fields, and its characteristic is that it can make full use of local raw material resources. Compared with concrete dams, masonry masonry dams can reduce costs to a certain extent, and have lower requirements for foundation rock conditions. However, due to the inconvenient use of mechanized construction for masonry masonry...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for flushing and filling mortar stone dams, which solves the problems of inconvenient mechanized construction, low operating efficiency, high particle size requirements for rockfill dam filling stones, and low utilization rate of material sources. low cost, high cost, etc.; its technological process is simple and its application range is wide. Compared with conventional masonry dams, the formed dam is not only conducive to the use of mechanized construction, but also has fast construction speed, high operating efficiency, significantly shortened construction period, and increased dam construction. The body’s own anti-seepage ability, no need to use anti-seepage panels, core wall anti-seepage and other facilities, reducing construction costs; compared with rockfill dam filling, it does not need to be rolled, there is no maximum block diameter control and grading requirements, and the stone Sufficient sources can make more full use of stockyard materials. Compared with rockfill concrete, it has the advantages of simplified procedures, simple construction equipment, easy operation, convenient maintenance, thick filling layer, dense mortar stone body, and good quality.

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