土工袋防渠道冻胀模型试验研究

李卓; 盛金保; 刘斯宏; 何勇军; 李亚军

doi:10.11779/CJGE201408011

土工袋防渠道冻胀模型试验研究 English Version

李卓^{1, 2},
盛金保^{1, 2},
刘斯宏³,
何勇军^{1, 2},
李亚军⁴

1. 南京水利科学研究院,江苏南京 210029; 2. 水利部大坝安全管理中心,江苏南京 210029; 3. 河海大学水利水电学院,江苏南京 210098; 4. 代尔夫特理工大学土木学院,代尔夫特

基金项目: 国家科技支撑计划项目（2012BAK10B04）; 水利部公益性行业科研专项项目（201301033）; 国家自然科学基金项目（51309164）; 江苏省博士后基金项目（Rq713001）; 南京水利科学研究青年基金项目（Y714009）; 南京水利科学研究院博士后基金项目（BH71301）

详细信息

作者简介:
李卓(1979- ),男,宁夏隆德人,博士后,主要从事土石坝工程、水工建筑物防冻胀等方面的研究工作。E-mail: zhuoli@nhri.cn。

中图分类号: TU43
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出版历程
- 收稿日期: 2013-10-30
- 发布日期: 2014-08-18

Model tests on frost heave-prevented channels using soilbags

LI Zhuo^{1, 2},
SHENG Jing-bao^{1, 2},
LIU Si-hong³,
HE Yong-jun^{1, 2},
LI Ya-jun⁴

1. Nanjing Hydraulic Research Institute, Nanjing 210029, China; 2. Dam Safety Management Center of the Ministry of Water Resources, Nanjing 210029, China; 3. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 4. Civil Engineering and Geosciences, Delf Uinversity of Technology, Delft, The Netherlands

摘要

摘要: 为研究土工袋在寒冷地区的防渠道冻胀效果,开展了冻融循环作用下土工袋处理渠道和常规渠道模型试验,研究了土工袋处理渠道和常规渠道的冻胀量、融沉量、含水率和温度随时间的变化规律。试验结果表明：冻融循环作用下土工袋处理渠道防冻胀效果显著,同时揭示了土工袋防渠道冻胀机理,即土工袋通过抑制毛细水、薄膜水上升、加筋作用达到防冻胀效果,为寒区渠道防冻胀提供理论依据。
- 冻融循环 /
- 土工袋 /
- 模型试验 /
- 渠道防冻胀
Abstract: In order to study the effectiveness of channels of frost heave prevention using soilbags in cold regions, a series of model tests on the soilbag-reinforced channels and traditional channels are conducted in the laboratory. The variation patterns of frost heave, thawing settlement, moisture content and temperature of the soilbag-reinforced channels and traditional channels are studied. The test results show that the soilbag-reinforced channels have significant effectiveness of frost heave prevention. The frost heave prevention mechanism of channels using soilbags is revealed. The theory of frost heave prevention is explaned by comparing the soilbag-reinforced channels with the traditional channels due to the effect of soilbags, namely reinforcement, which is achieved by the small differential deformation and inhibition of capillary water and film water migration through soilbags. Therefore, the soilbags can prevent the frost heave of channels. This study may provide references for the frost heave prevention of channels in cold regions.
- freeze-thaw cycle /
- soilbags /
- model test /
- frost heave prevention of channel

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参考文献(13)

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