Roller compacted concrete dam and slit forming method thereof

Abstract

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 isupwards 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 aroller compacted concrete arch dam in the industries of water conservancy and hydroelectricity.

Description

technical field [0001] The invention relates to a roller-compacted concrete dam and its seam-forming method, in particular to a roller-compacted concrete dam body and a seam-forming method thereof which are suitable for pressure or shear force transmission in transverse joints between dam sections in the water conservancy and hydropower industries. Applicable to the joint formation of roller compacted concrete arch dams. Background technique [0002] In general, there are two basic methods for forming joints in roller compacted concrete dams: cutting joints and prefabricated formwork joints. In the early days, there was also the method of forming joints through induced holes. [0003] The seam cutting method is generally to cut the concrete of the green layer directly along the horizontal seam with a seam cutting machine after the roller compacted concrete is rolled, and fill the seam with colored strip cloth or zinc iron sheet or Place dry sand spacers directly in the join...

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Problems solved by technology

[0005] In the early days of roller compacted concrete, there was a method of inducing holes to form seams. This method of forming seams was formed by manual brazing or pneumatic drilling after the concrete was rolled. , Concrete blocks the induction hole, this kind of seam formation method of filling sand in the induction hole is basically rarely used now

[0006] In the existing joint formation methods of roller compacted concrete dams that need to consider the transmission of pressure and shear force between transverse joints, the method of forming joints with prefabricated concrete blocks is basically used, but this kind of prefabricated concrete blocks weighs about 0.2t, which is relatively heavy and cannot be done manually. Moving requires special hoisting equipment to be installed on site. The site construction is relatively cumbersome, and concrete prefabricated blocks need to be stacked for every 0.3m high base layer. Other processes have a greater impact

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