›› 2018, Vol. 32 ›› Issue (3): 301-308.

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Field Test and Monitoring a Rocky Slope Stabilization with New Materials in Bio-Engineering

ZHOU Cuiying1,3, YANG Xu1,3, HE Shaomiao2,3, LIU Zhen1,3, LIANG Yanhao1,3   

  1. (1.School of Civil Engineering, Sun Yatsen University, Guangzhou 510275;
    2.School of Earth Sciences and Geological Engineering, Sun Yatsen University, Guangzhou 510275;
    3.Research Center for Geotechnical Engineering and Information Technology, Sun Yatsen University, Guangzhou 510275)
  • Received:2018-05-14 Revised:2018-05-16 Online:2018-06-22 Published:2018-06-26

Abstract: This paper presents a case history the bioengineering method by implementing a new material with better functions for the stabilization of a rock slope site, which was selected in the backside campus of Longcheng Secondary Vocational College. The bioengineering slope stabilization construction methods and new bioengineering materials are introduced in the paper. The test site had a comparison groups to monitor the effect of new bioengineering material with site environment the vegetation growing, and soil properties. After the six months monitoring, the following results were observed: After applying the new material on the top soils, the vegetation germination rates and time were improved; both the stems and roots of the vegetation grew more rapidly to enhance the slope erosion resistance and shallow soil stability. After applying the new material, the soil property monitoring results indicate the pH value at the slope was between 7.0 and 7.5. Temperature in the soil increased average of 0.56 Celsius degrees in the cloudy and rainy days and decreased average 0.3 Celsius degrees at the sunny days in summer. The soil activity organic content and electrical conductivity developed by 31% and 11.5% respectively; the soil oxygen content increased by 2% while the soil carbondioxide content decreased by 30.6%. Moreover, the degree of soil compaction declined by 27.6%. The new bioengineering material can improve the rocky slope stability with cost effective and environmental friendly advantages. It can improve the moisture and thermal activities of top soil and enhance the vegetation growth.

Key words: Slope Stability Through Bio-Engineering, New Materials with Better Functions, Rocky Slope, In-Situ Tests, Monitoring