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Rapid construction method for stone dam rolling asphalt concrete cutoff core wall

A technology of asphalt concrete and construction method, which is applied in dams, barrages, water conservancy projects, etc., can solve the problems of difficult to find anti-seepage core wall materials, poor dam construction conditions, and small engineering volume.

Inactive Publication Date: 2007-02-07
CHINA GEZHOUBA GROUP CO LTD
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Problems solved by technology

The roller compacted asphalt concrete anti-seepage core wall structure of the earth-rock dam has the advantages of small engineering quantity, mechanized construction operation, no interference to the dam construction, and early water retaining function during the dam construction process; especially the dam construction conditions in the western hydropower development The traditional anti-seepage core wall materials are difficult to find, or they are not suitable for the harsh geological and climatic conditions in the western region

Method used

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  • Rapid construction method for stone dam rolling asphalt concrete cutoff core wall
  • Rapid construction method for stone dam rolling asphalt concrete cutoff core wall
  • Rapid construction method for stone dam rolling asphalt concrete cutoff core wall

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Embodiment Construction

[0027] A rapid construction method for an earth-rock dam roller compacted asphalt concrete anti-seepage core wall, comprising the following steps:

[0028] 1. The foundation surface of the core wall of an earth-rock dam is set out, that is, the design center line of the anti-seepage core wall and the width of asphalt concrete paving are set after measurement. According to the steel formwork with a vertical height of 30cm set by the two side lines after the measurement, the core wall transition material is paved on the outside of the steel formwork, and the surface of the core wall foundation is heated to prepare for asphalt concrete paving;

[0029] 2. The asphalt mixture with a temperature of 165-175°C at the outlet of the mixing building is loaded into the insulated transport vehicle, and the mixture is transported to the construction site and unloaded into the insulated hopper of the vertical transportation equipment; the vertical transportation equipment directly unloads th...

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Abstract

The invention relates to a method for quickly constructing sand bank rolling pitch concrete anti-leakage wall, especially the method for laying two layers of concretes on the wall while each layer is 30cm, at the condition as low-temperature as -5Deg. C and isohyetal amount is lower than 2mm / h, to effectively increase the days that applying said wall constructions.

Description

technical field [0001] The invention relates to a rapid construction method for an earth-rock dam rolling asphalt concrete anti-seepage core wall, in particular to a rapid construction method for an earth-rock dam rolling asphalt concrete core wall in high cold and rainy areas. Background technique [0002] The permeability coefficient of asphalt concrete is less than 1×10-7cm / s, and it has a strong ability to adapt to deformation, has good flexibility, can adapt to certain uneven deformation (subsidence), and even has the ability of closure and self-healing. The roller compacted asphalt concrete anti-seepage core wall structure of the earth-rock dam has the advantages of small engineering quantity, mechanized construction operation, no interference to the dam construction, and early water retaining function during the dam construction process; especially the dam construction conditions in the western hydropower development The traditional anti-seepage core wall materials ar...

Claims

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Application Information

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IPC IPC(8): E02B7/02E02D15/00E02B7/06
Inventor 向永忠马家燕朱志坚刘显斌季维钢李守建李强孙泽高
Owner CHINA GEZHOUBA GROUP CO LTD
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