Characteristics of runoff and sediment yields for highway slope under different vegetation measures in Qinghai-Tibet Plateau

HU Lin; WANG Qi; DAN Yong-ti; CHEN Rui-hua; GUO Wen; LI Zhan-bin

doi:10.19818/j.cnki.1671-1637.2016.04.010

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HU Lin, WANG Qi, DAN Yong-ti, CHEN Rui-hua, GUO Wen, LI Zhan-bin. Characteristics of runoff and sediment yields for highway slope under different vegetation measures in Qinghai-Tibet Plateau[J]. Journal of Traffic and Transportation Engineering, 2016, 16(4): 96-103. doi: 10.19818/j.cnki.1671-1637.2016.04.010

Citation:

HU Lin, WANG Qi, DAN Yong-ti, CHEN Rui-hua, GUO Wen, LI Zhan-bin. Characteristics of runoff and sediment yields for highway slope under different vegetation measures in Qinghai-Tibet Plateau[J]. Journal of Traffic and Transportation Engineering, 2016, 16(4): 96-103. doi: 10.19818/j.cnki.1671-1637.2016.04.010

Citation:

HU Lin, WANG Qi, DAN Yong-ti, CHEN Rui-hua, GUO Wen, LI Zhan-bin. Characteristics of runoff and sediment yields for highway slope under different vegetation measures in Qinghai-Tibet Plateau[J]. Journal of Traffic and Transportation Engineering, 2016, 16(4): 96-103. doi: 10.19818/j.cnki.1671-1637.2016.04.010

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Characteristics of runoff and sediment yields for highway slope under different vegetation measures in Qinghai-Tibet Plateau

doi: 10.19818/j.cnki.1671-1637.2016.04.010

HU Lin^{1, 2
,},
WANG Qi²,
DAN Yong-ti²,
CHEN Rui-hua²,
GUO Wen²,
LI Zhan-bin^1
,

1.
State Key Laboratory Cultivation Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, Shaanxi, China
2.
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

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Author Bio:
HU Lin(1986-), male, engineer, doctoral student, +86-29-88322888, hulin@nwsuaf.edu.cn

LI Zhan-bin(1962-), male, professor, PhD, +86-29-82312606, zhanbinli@126.com
Received Date: 2016-05-21
Publish Date: 2016-08-25

Abstract

Abstract

In order to explore the erosion law on highway slope with vegetation protection measures and improve highway slope vegetation protection technology in Qinghai-Tibet Plateau, field scouring tests were carried out to study the characteristics of runoff and sediment yields on highway slope in Qinghai-Tibet Plateau under different vegetation protection measures including bare slope, three dimensional network seeding and artificial turfing, and the protection efficiency and sediment interception mechanism under different measures were analyzed. Test result shows that when the scouring flow rates are 3and 8L·min^-1 in Qinghai-Tibet Plateau, the average initial producing times are 225.50 and 163.27 s respectively. There is significant correlation among the initial runoff producing time, the flow rate and the vegetation coverage. The runoffproducing stably time under scouring flow rate of 8L·min^-1 advances by about 2 min compared to the scouring flow rate of 3L·min^-1. The sediment interception effect of vegetation measures mainly embodies in interception of sediment with coarse particles. The slope runoff and sediment yields decrease with the increase of vegetation coverage. The average runoff and sediment interception efficiencies of vegetation measures are 55.7% and 53.5% respectively. The orders of comprehensive protection effects from big to small are three dimensional network seeding with 74% coverage, three dimensional network seeding with 37% coverage, artificial turfing in the middle, artificial turfing at the top, and bare slope. The comprehensive recovery technology of slope vegetation combining turf as frame and three dimensional network seeding is suggested.
- highway slope,
- vegetation protection,
- runoff and sediment yields,
- protection efficiency,
- Qinghai-Tibet Plateau

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References(34)

References

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Characteristics of runoff and sediment yields for highway slope under different vegetation measures in Qinghai-Tibet Plateau

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Characteristics of runoff and sediment yields for highway slope under different vegetation measures in Qinghai-Tibet Plateau

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