| 塑性混凝土防渗墙在三峡二期围堰中的应用 |
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| 引用本文： | 史迅.塑性混凝土防渗墙在三峡二期围堰中的应用[J].勘察科学技术,2000(1):6-9. |
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| 作者姓名： | 史迅 |
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| 作者单位： | 中国长江三峡工程开发总公司试验中心,湖北,宜昌,443133 |
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| 摘 要： | 三峡二期围堰防渗墙最高74m，墙厚0．8－1．1m，防渗总面积83450m2。其中墙深大于40m，采用塑性混凝土，成墙最高月达11188m2。防渗墙经1998年夏季长江8次洪峰考验，堰体渗透比降最大值0．108，小于堰基粉细砂设计允许值0．25；渗水总量约50L／s，小于设计估算基坑渗水总量600L／s，防渗效果显著。
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| 关 键 词： | 二期围堰 塑性混凝土 防渗墙 配合比 槽段 质量控制 |
| 修稿时间： | 1999-07-06 |
APPLICATION OF THE PLASTIC CONCRETE CUT-OFF WALL FOR THE SECOND STAGE COFFERDAM OF THREE GORGES PROJECT |
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| Shi Xun.APPLICATION OF THE PLASTIC CONCRETE CUT-OFF WALL FOR THE SECOND STAGE COFFERDAM OF THREE GORGES PROJECT[J].Site Investigation Science and Technology,2000(1):6-9. |
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| Authors: | Shi Xun |
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| Affiliation: | Test Centre of China Yangtze Three Gorges Project Development Corporation |
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| Abstract: | The Three Gorges second stage cofferdam cut - off wall has the following dimensions: maxium height 74m, thickness 0.8 - 1. 1m,total seepage proof area 8345m2 ,Wall depth greater than 40m. The maximum area of monthly wall construction form plastic concrete reaches to 11188m2. The cut - off wall has been underwent the trial of 8 times Yantze river flood peak in the - of 1998. The maximum percolation gradient of the cofferdam is 0.108, less than the allowable design value of the cofferdam foundation of silty fine sand 0.25. The total seepage discharge is approximately 50L/s, less than the designed estimate of foundation pit seepage 600 L/s. This yields notable results of seepage prevention performance. |
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| Keywords: | second stage cofferdam plastic concrete cut-off wall mixing proportion groove segment quality control |
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