The Application and Analysis of Reinforcing Mechanism with Vet. for Slope Ecological Protection in Highway

Abstract:

Slope biotechnique has become a significant method to protect slopes. Vetiveria zizanioides has many biological characteristics, such as resistance to overhead flooding injury; withstand drought, pain resistance and tachyauxesis. The root system has high tensile strength, well adaptability and other features. Through the joint effects of root system and micro-ecological environment, the slope can be well reinforced and protected. This paper studies the basic properties of vetiveria zizanioides and the principle of water and soil maintenance. The tensile strength of single root and the force mechanism of eco-reinforced slope are analyzed. Research shows that vetiveria zizanioides also has many excellent engineering parameters, such as tensile strength and shear strength. With the large and deep pierced root system, the soil mass is effectively fixed, which limits the shift of shallow soil of slopes. Vetiveria zizanioides is easy to grow. Meanwhile, it can control soil erosion effectively and maintain the stability of the highway slope. Therefore, this plant has a greater value in the field of highway slope protection.

• Periodical: Applied Mechanics and Materials (Volumes 316-317)
• Pages: 423-429
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.316-317.423
• Online since: April 2013
• Authors: Jiu Ming Li, Xiao Bo Xiong, Ai Hua Tao
• Keywords: Engineering Characteristics, Force Mechanism Offixing Slope, Reinforcement Effect, Tensile Strength, Vetiveria zizanioides

References

[1] Bischetti G. B., Chiaradia E. A., Simonato T. et al. 2005, Root strength and root area of forest species in Lombardy. Plant Soil. 278, 11-22.

DOI: 10.1007/s11104-005-0605-4

[2] Diti Hengchaovanich.Vetiver Grass for Slope Stabilization and Erosion Control[J].Pacific Rim Vetiver Network, Technical Bulletin.1988(2):1-6.

[3] E. Comino, A. Druetta. The effect of Poaceae roots on the shear strength of soils in the Italian alpine environment[J]. Soil & Tillage Research, 2010, 106, pp: 194-201.

DOI: 10.1016/j.still.2009.11.006

[4] Gray D.H. Influence of vegetation on the stability of slopes [A]. Vegetation and Slopes, Stabilization, Protection and Ecology [M].London: Thomas Telford, 1995: 6-25.

DOI: 10.1680/vasspae.20313.0002

[5] HAOTong-qi. Experiment Study on the Shear Strength of Soil-Root Composite[J]. Journal of South China Agricultural University, 2000, 21(4): 78-80.

[6] J. Ekanayake. Slope stability thresholds for vegetated hill slopes: a composite model[J]. Can. Geotech. 2002, 39, pp:849-862.

DOI: 10.1139/t02-026

[7] Luo Weixiang. Runoff and scouring amount in forest and grass land with different cover rate[J]. ACTA CONSERVATIONS SOIL ET AQUAE SINICA, 1990,4(1): 30-35.

[8] Wu T.H., Watson B.. In situ shear tests of soil blocks with roots. Canadian Geotechnical Journal, 1998, 35:579-590.

DOI: 10.1139/t98-027

[9] Xia Han-ping, Ao Hui-xiu, Liu Shi-zhon. Studies on benefits of the vetiver eco-engineering for protection of highway slopes [J]. PRATACULTURAL SCIENCE, 2002,19(1):52~56

[10] X. B. Xiong, M. X. Zheng, P. Lin, et al. Evaluation of effect for high slope K211 at Ganyue freeway, International Young Scholar Symposium on Rock Mechanics 2008, Beijing, China, April 28-30, 2008, Taylor & Francis Group/Balkema, pp.543-546.

DOI: 10.1201/9780203883204.ch102

[11] Feng Chen, Xiaobo Xiong, Sai Tan. et al. An Investigation on Stress-strain Relationship of on Eucalyptus saligna by Pull-out Method Based on Regression Analysis. Y. Huang and F. Wu (eds.), New Frontiers in Engineering Geology and the Environment, ISCEG-Shanghai 2012, Springer-Verlag Berlin Heidelberg 2012, pp: 97-102.

DOI: 10.1007/978-3-642-31671-5_15

[12] Yang Yachuan. Experimental Study on Anti-Water Erosion and Shear Strength of soil-Root Composite[J]. Journal of China Agricultural University, 1996, 1(2): 31-38.

[13] YAO Huan, SHEN Hua, LI Hao, et al. Preliminary study on engineering properties of vetiver on slope protection[J]. The Chinese Journal of Geological Hazard and Control, 2007, 18(2): 63-68.

[14] ZHANG Hongbo, YAO Huan, LIN Yanbin. Preliminary Analysis of the Effects of Vetiver Grass for Stabilizing Slope[J]. Soil Engineering and Foundation, 2008, 22(1): 52-55.

[15] Zhu Xianmo. Types of Soil Erosion and Resistance of the Soil to Erosion in Loess Plateau of China——Current Progress in Soil Research in PRC, Jiangsu Science and Technology Publishing House, 1986, pp: 611-621.

[16] Yang Xiuyan, Lei Haiqing, Li Fayong, et al. Selections of Acclimation Pioneer Plants for Ecological Restoration in the Alum Mining Tailings[J]. SCIENTIA SILVAE SINICAE, 2009, 45(4): 14-18.

[17] HUANG Yi-xiong, FANG Zu-guang, LIN Jie-min, et al. Study of Vegetation Restoration on Ecological Effect in Kaolin Mining Region[J]. Journal of Fujian Normal University (Natural Science Edition), 2008,24(2): 86-91.