Volume 16 Issue 4
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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2016  >  16(4): 88-95
DAN Yong-ti, HU Lin, WANG Qi, CHEN Rui-hua, GUO Wen. Impacts of runoff scouring on high-grade highway slope erosion in alpine and high-altitude regions[J]. Journal of Traffic and Transportation Engineering, 2016, 16(4): 88-95. doi: 10.19818/j.cnki.1671-1637.2016.04.009
Citation: DAN Yong-ti, HU Lin, WANG Qi, CHEN Rui-hua, GUO Wen. Impacts of runoff scouring on high-grade highway slope erosion in alpine and high-altitude regions[J]. Journal of Traffic and Transportation Engineering, 2016, 16(4): 88-95. doi: 10.19818/j.cnki.1671-1637.2016.04.009
shu

Impacts of runoff scouring on high-grade highway slope erosion in alpine and high-altitude regions

doi: 10.19818/j.cnki.1671-1637.2016.04.009
  • 1.

    State Key Laboratory of Road Engineering Safety and Health in Cold and High-Altitude Regions, CCCC First Highway Consultants Co., Ltd., Xi'an 710075, Shaanxi, China

  • 2.

    State Key Laboratory Cultivation Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, Shaanxi, China

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  • Author Bio:

    SHAN Yong-ti(1980-), male, senior engineer, +86-29-88322888, 27430166@qq.com

  • Received Date: 2016-05-01
  • Publish Date: 2016-08-25
    Abstract
  • In order to expound the erosion laws on high-grade highway slope in alpine and highaltitude regions and provide theoretical basis for the prevention and treatment of water and soil loss for highway slope, subgrade bare slope of Gonghe-Yushu Highway in Qinghai Province was chosen as research object, field runoff scouring experiments were carried out to analyze the erosion laws of sink flow on high-grade highway slope in alpine and high-altitude regions, and protection strategy was expounded. Analysis result shows that runoff produce times with flow rates of 6.0, 10.0, 14.5L·min-1 respectively advance by 23.83, 107.63, 108.13 scompared to runoff producing time with flow rate of 3. 5L·min-1. The bigger scouring flow rate is, the shorter runoff producing time is. Total sediment yields with flow rates of 3.5, 6.0, 10.0, 14.5L·min-1 are14. 65, 20.42, 43.61, 32.20 kg respectively, so the sediment yield first increases then decreases. The relationship between accumulative runoff yield and accumulative sediment yield meets power function form. Scouring flow rate and erosion sediment yield show significant positive correlation. Obviously reducing pavement runoff effectively is the key to decrease highway slope erosion amount, the supporting drainage measures should have the function of collecting and discharging pavement sink flow quickly, masonry protection measures should be reduced in slope protection in alpine and high-altitude regions, and reasonable covering and soil fixing measures should be taken when slope vegetation is in recovery.

     

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