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Casting construction method for asphalt concrete anti-infiltration core wall of earth rockfill dam

An asphalt concrete and construction method technology, applied in dams, buildings, sheet pile walls, etc., can solve problems such as poor overall stability and anti-seepage effect, and achieve good laying effect, lower construction temperature, and good flatness.

Active Publication Date: 2007-09-05
CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a pouring construction method for an asphalt concrete anti-seepage core wall of an earth-rock dam to solve the problem of poor overall stability and anti-seepage effect of using asphalt mortar to lay concrete prefabricated blocks as the auxiliary wall of the asphalt concrete anti-seepage core wall

Method used

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  • Casting construction method for asphalt concrete anti-infiltration core wall of earth rockfill dam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] a. Lay the formwork. During construction, lay the formwork vertically on the base of the core wall so that the centerline of the formwork and the centerline of the core wall completely coincide. The formwork adopts a sliding formwork; the width is 150cm, and it is made of 10mm steel plate;

[0036] b. Lay high-temperature-resistant flexible cloth-based materials. After the formwork is laid, lay a high-temperature-resistant flexible cloth-based material with a width slightly larger than the thickness of the asphalt concrete pavement close to the inside of the formwork. The width of the high-temperature-resistant flexible cloth-based material is 10cm higher than that of the formwork. High temperature resistant flexible cloth base material adopts polyester high temperature resistant 230°C non-woven fabric produced by Dalian Evergrande High-tech Material Development Co., Ltd.

[0037] c. Pave the transition material and roll the transition material, pave the transition mater...

Embodiment 2

[0041] a. Lay the formwork. During the construction, lay the formwork vertically on the core wall layer that has been poured, so that the center line of the formwork and the center line of the core wall completely coincide. The formwork adopts an assembled movable formwork; the width is 100cm;

[0042] b. Lay high-temperature-resistant flexible cloth-based materials. After the template is laid, lay a high-temperature-resistant flexible cloth-based material with a width slightly larger than the thickness of the asphalt concrete paving close to the inside of the template. The width of the high-temperature-resistant flexible cloth-based material is 8cm higher than that of the template. The high-temperature flexible cloth base material is made of polyamide fiber non-woven fabric, which can withstand high temperatures of 200°C;

[0043] c. Pave the transition material and roll the transition material, pave the transition material on the outside of the formwork and pass the rolling; ...

Embodiment 3

[0049] a. Lay the formwork. During construction, lay the formwork vertically on the core wall layer that has been poured, so that the centerline of the formwork and the centerline of the core wall completely coincide, and use a sliding formwork; the width is 80cm;

[0050]b. Lay high-temperature-resistant flexible cloth-based materials. After the template is laid, lay a high-temperature-resistant flexible cloth-based material with a width slightly larger than the thickness of the asphalt concrete pavement close to the inside of the template. The width of the high-temperature-resistant flexible cloth-based material is 9cm higher than that of the template. Acrylonitrile fiber non-woven fabric, resistant to high temperature of 230 ℃.

[0051] c. Pave the transition material and roll the transition material, pave the transition material on the outside of the formwork and pass the rolling;

[0052] d. Pave asphalt concrete, pave asphalt concrete into the formwork and make it dense;...

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Abstract

The invention relates to a method for constructing the earth-rock dam vibrated bitumen concrete seepage cutoff wall, belonging to the construction of earth-rock dam seepage cutoff wall. It comprises following steps: a, laying mold plate; b, laying high temperature resistant flexible cloth-base material to cling the inner side of mold plate and its width is bigger than the thickness of bitumen concrete; c, laying transition material at the outer side of mold plate and rolling the transition material; d, laying bitumen concrete; e, moving the mold plate or removing the mold plate. The invention has the advantages that: the compound seepage cutoff element formed by the bitumen concrete wall and the high temperature resistant cloth-base material has better flatness of the contact surface with the transition material to confirm the effective seepage cutoff section of bitumen concrete wall.

Description

technical field [0001] The invention belongs to a construction method for an anti-seepage core wall of an earth-rock dam. Background technique [0002] The structure type of pouring asphalt concrete anti-seepage core wall designed and constructed in the past is to use asphalt mortar to lay concrete prefabricated blocks as the auxiliary wall of the asphalt concrete anti-seepage core wall, and pour self-leveling and self-compacting asphalt concrete in the middle of the auxiliary wall - pouring asphalt concrete. Since the concrete prefabricated block wall has a certain rigidity, there is a big difference in the deformation capacity of the flexible asphalt concrete anti-seepage core wall. The overall stability and anti-seepage effect of the anti-seepage core wall are affected to a certain extent by the extrusion shear stress from the prefabricated blocks or the passive cracking due to the misalignment of the prefabricated blocks in the auxiliary wall. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/06E02D5/18E02D31/10
Inventor 王德库孙荣博金正浩苑润保侯福江吴春雷王科峰叶远胜鞠连义
Owner CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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