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189results about "Wall dams" patented technology

Construction method for filling mortar combined stone dam

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.
Owner:沈阳乾玉水利有限公司

Roller compacted concrete dam and slit forming method thereof

The invention discloses a roller compacted concrete dam and a slit forming method thereof. The method comprises the following steps: pouring roller compacted concrete according to a conventional construction process, upwards guiding a vertical grout stop copper sheet together with the rise of a roller compacted layer, and drilling an induction hole in interval of concrete after a raising layer is upwards guided; arranging a grouting pipeline in the induction hole; and then arranging a horizontal grout stop copper sheet and the vertical grout stop copper sheet above the grouting pipeline, repeating the processes, and grouting a transverse slit through the grouting pipeline after the temperature of the roller compacted concrete is reduced to a stable temperature so as to form a roller compacted concrete transverse slit surface for transferring pressure and shearing force. Hoisting equipment is not needed, the warehouse surface construction is simple and convenient, and the transverse slit surface can transfer the pressure and the shearing force; and the method basically has no influence on the construction of large-scale roller compacted concrete of a warehouse surface, and is particularly suitable for slit formation of the roller compacted concrete dam with the transverse slit for transferring the pressure or the shearing force among the dam sections and the slit formation of a roller compacted concrete arch dam in the industries of water conservancy and hydroelectricity.
Owner:POWERCHINA ZHONGNAN ENG
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