Inverse drainage processing method in high concrete panel rock-fill dam construction period

Abstract

The invention relates to a reverse drainage treatment method during the construction period of a dam body of a high rock-fill dam provided with a concrete panel, which is a drainage method for treating dam body construction waste water and underground leaked water during the construction period of the high rock-fill dam provided with the concrete panel by combination of the prior drainage and toe board and wide slot drainage. The method comprises the following steps: firstly, as for the dam body construction waste water and the underground leaked water below the elevation on the top of a flow measurement weir on the rear of the dam, reinforced gabions are used for arranging a temporary collecting well and a drainage pipe inside a rock-fill before the dam for drainage, that is the reverse drainage treatment method is performed; and secondly, as for the dam body construction waste water and the underground leaked water on the elevation on the top of the flow measurement weir on the rear of the dam, drainage is still performed by adopting the prior flow measurement weir on the rear of the dam. The method breaks through the treatment range of reversely leaked water in the dam body during the construction period of the rock-fill dam covered by the DL / T5128-2001 construction specifications of the Construction Specifications for the Rock-fill Dam Provided with a Concrete Panel, solves the problem of drainage of the leaked water in the dam body in the construction process of the high rock-fill dam, and particularly guarantees the safety of construction of the concrete panel.

Description

technical field [0001] The invention relates to a method for discharging the water discarded during the construction of a high concrete face rockfill dam and underground seepage water to the outside of the dam. technical background [0002] High concrete face rockfill dams have a large amount of water added to the outside of the dam body and supplementary sprinkling of the dam surface during the construction process, resulting in a large amount of construction waste water. In addition, the dam body is large in size, with a lot of underground water seepage, and the elevation of the drainage body behind the conventional dam is relatively high. The water pressure formed in the high rockfill dam body is high. If the conventional drainage method is still adopted, the newly poured concrete slab near the toe plate in front of the dam may be broken down by the water seepage pressure in the dam body during the construction period, seriously affecting the dam body. Safety and interfer...

AI Technical Summary

Problems solved by technology

[0002] High concrete face rockfill dams have a large amount of water added to the outside of the dam body and supplementary sprinkling of the dam surface during the construction process, resulting in a large amount of construction waste water. In addition, the dam body is large in size, with a lot of underground water seepage, and the elevation of the drainage body behind the conventional dam is relatively high. The water pressure formed in the high rockfill dam body is high. If the conventional drainage method is still adopted, the newly poured concrete slab near the toe plate in front of the dam may be broken down by the water seepage pressure in the dam body during the construction period, seriously affecting the dam body. Safety and interference with dam construction

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