Model tests on frost heave-prevented channels using soilbags
LI Zhuo1, 2, SHENG Jing-bao1, 2, LIU Si-hong3, HE Yong-jun1, 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
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.
李卓, 盛金保, 刘斯宏, 何勇军, 李亚军. 土工袋防渠道冻胀模型试验研究[J]. 岩土工程学报, 2014, 36(8): 1455-1463.
LI Zhuo, SHENG Jing-bao, LIU Si-hong, HE Yong-jun, LI Ya-jun. Model tests on frost heave-prevented channels using soilbags. Chinese J. Geot. Eng., 2014, 36(8): 1455-1463.
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