Soil Engineering and Foundation

Soil Engineering and Foundation ›› 2023, Vol. 37 ›› Issue (2): 161-165.

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Vegetation Restoration Method of Weathered Migmatitic Granite Slopes in Lincang Area

YU Yang1,4, QI Ziyuan2,4, YANG Xin3,4, YAN Song4,5   

  1. (1.College of Environment and Ecology, Chongqing University, Chongqing 400000；
    2.College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266000；
    3.College of Engineering, China University of Geosciences, Wuhan 430000；
    4.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071；
    5.University of Chinese Academy of Sciences, Beijing 100049)
  • Received:2021-08-21 Revised:2021-08-26 Online:2023-04-30 Published:2023-04-19

Abstract: The weathered migmatitic granite slopes are widely distributed in Lincang area. It is difficult to restore vegetations after the slope excavation for the expressway construction. The resultant erosion hazards consequences are serious. The field investigation and analysis of the vegetation restoration and erosion control of dozens of slopes of Mo-Lin Highway are presented in this paper. The vegetation restoration and erosion control conditions of two typical slopes with one high slope and the other medium-low slope are investigated, evaluated and the results are introduced in the paper. The main internal and external factors affecting the slope erosion of the migmatitic granite slope are summarized in accordance with the field investigation results. For the different types of migmatitic granite slopes and different locations on the slopes, reasonable vegetation restoration methods are proposed, which can effectively minimize the slope erosion hazard. The effectiveness of the vegetation restoration method is verified by an engineering slope case istory.

Key words: Rock Slopes, Migmatitic Granite, Highways, Slope Protection Methods, Vegetation Restoration

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