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- W2977647713 abstract "A field rainfall test on Changde-Jishou expressway was performed by self-made artificial rainfall instrument to investigate the drainage ability of drainage system of median.By analyzing the test results,the relationship of initial water content and the porosity of filling soil of median with the drainage capacity were investigated,which shows that the larger the initial water content and the porosity of filling soil,the faster the drainage speed and the shorter the drainage time of transverse drainage pipe.Then the ratio of drainage to rainfall was calculated to evaluate the drainage capacity and efficiency of median.Moreover,the problems in terms of drainage design and construction of median were figured out(the key method for improving the efficiency of drainage of median is to ensure the transverse drainage pipe been unhindered),and the suggestions to improve the efficiency of drainage system were supposed:(1)to set a small inspection well at the location of transverse drainage pipe to clear up and maintain the drainage capacity;(2)to drain the collected water directly into the manhole where the radius of each pre-embedded transverse drainage pipe should meet the requirement of drainage ability;(3)to enlarge the size of collecting well of blind-drain in median to improve the capacity of collecting water and then drain the water out of roadbed in time." @default.
- W2977647713 created "2019-10-10" @default.
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- W2977647713 date "2010-01-01" @default.
- W2977647713 modified "2023-09-25" @default.
- W2977647713 title "Experimental Analysis of Rainfall Simulation at Median of Highway" @default.
- W2977647713 hasPublicationYear "2010" @default.
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