The Study on the Selection of Revegetation Methods on Weathered Granite Cut-soil Slopes

화강풍화토 흙깎기 비탈면 녹화공법 선정 방안 연구

Kim, Nam-Choon

  • Received : 2016.03.11
  • Accepted : 2016.04.21
  • Published : 2016.04.29


The present study is an analysis of the monitoring results of the four areas that underwent the experimental construction of Straw-net+seedspray, Vegetation media spray method(t=2cm), and Vegetation media spray method(t=3cm), with the purpose of selecting the adequate revegetation of cutting slopes in weathered granite soil. Cutting slopes are mostly designed in the Straw-net+seedspray method, but since weathered granite soil slopes tend to have an infertile soil quality that runs down, it is difficult for seed germination and growth. It is difficult to apply Straw-net+seedspray to weathered granite soil slopes considering the germination rate and coverage rate of the Straw-net+seedspray method, which accompanies erosion and scouring. The final conclusions are summarized as follows. First, Straw-net+seedspray has difficulty recruiting plants to infertile weathered granite soil, which results in a lower coverage rate and fewer species, so it is not adequate construction method. Second, Vegetation spraying methods with wet media are more advantageous in early revegetation. The wet construction methods are faster than the dry construction methods in terms of early germination and its early growth are more excellent. Third, when constructing Vegetation spray methods with dry media, it were more advantageous if the thickness was thicker. When the soil-media is thicker, the soil is resilient to droughts, so the thickness must be flexibly applied according to the soil quality and slant of the weathered granite soil slope. The present study is a monitoring result for some areas of Gangwon-do, so its results may differ from other areas.


Weathered granite soil;Straw-net+seedspray;Vegetation media spray;Cut-soil slopes;Revegetation


  1. Cho DG․Jeon GS․Shim YJ․Kim DH․Do JN and Park MY. 2015. A Study on the Mixing Ratio of Food Waste on Slope Re-vegetation Base Materials. Journal of the Korean Society of Environmental Restoration Technology. 18(6): 215-226. (in Korean with English summary)
  2. Han KC․Ryu DW․Cheon DS and Hong ES. 2008. A Case Study on the Stability Analysis of a Cutting Slope Composed of Weathered Granite and Soil. Journal of the Korean Society for Rock Mechanics 18(4): 289-299. (in Korean with English summary)
  3. Jang HT․Park WJ․Kim NC and Park JM. 2012. Use of Arundinaria munsuensis Y. Lee as revegetation plant materials of damaged slopes. Journal of the Korean Society of Environmental Restoration Technology 15(1): 133-140. (in Korean with English summary)
  4. Kim NC. 1988. A Study on the Ecological Restoration Strategies for the Disturbed Landscapes. Journal of the Korean Society of Environmental Restoration Technology 1(1): 28-44. (in Korean with English summary)
  5. Kim NC․Kang JH․Lee JU․Nam SJ and Lee WH. 2001. Study on the Revegetation Technology for the Ecological Restoration of the Decomposed Granite Roadside Slopes -The Application of the Natural Topsoil Restoration Methods(NTRM)-. Journal of the Korean Society of Environmental Restoration Technology 4(3): 84-95. (in Korean with English summary)
  6. Korea Expressway Corporation. 2015. An Evaluative Study on Experimental Construction Sites Applying Revegetation Methods(ex-spray) on Weathered Granite Soil Slopes. (in Korean with English summary)
  7. Lee JS and Kim YT. 2013. Infiltration and Stability Analysis of Weathered Granite Slope considering Rainfall Patterns. Journal of KOSHAM 13(5): 83-91. (in Korean with English summary)
  8. Lee MJ․Lee JU․ Jeon GS․Kim HJ․Choe YH․ Jeong DH and Song HG. 2003. Native Plants Selection for Ecological Replantation in Forest Road Slope -In case study on forest road of Gangwon-do. Journal of the Korean Society For Environmental Restoration Technology 8(4): 24-32. (in Korean with English summary)
  9. Ministry of Construction Transportation(MCT). 2007. The Use of Wood Waste for slope revegetation. (in Korean)
  10. Ministry of Land, Transport and Maritime Affairs (MLTMA). 2009. Design and Construction guidelines for revegetation of the road cut-slope. (in Korean)
  11. Nam SJ and Kim NC. 1988. A Study on the Seeding of Zoysia japonica and Woody Plants for the Revegetation of Rock-exposed-slopes by Natural Topsoil Restoration Methods. Jounal of the Korean Society For Environmental Restoration Technology 1(1): 141-150. (in Korean with English summary).
  12. Song HG․Jeon GS․Lee SH․Kim NC․Park GS and Lee BJ. 2005. Vegetation Structure and Succession of Highway Cutting-slope Area. Journal of the Korean Society For Environmental Restoration Technology 8(6): 69-79. (in Korean with English summary)
  13. Song HG․Park GS․Lee JU․Lee MJ․Kim HJ and Kwon OW. 2004. Native Plants Selection in Decomposed Granite Cut-slope -In case study on forest road of Chungcheong-do and Gyeongsangbuk-do. Journal of the Korean Society For Environmental Restoration Technology 6(5): 48-58. (in Korean with English summary)
  14. Yoon JW. 2015, Behavior of cement-based fracture grouting considering characteristics of weathered granite soil, Korea University Master's thesis. (in Korean with English summary)


Supported by : 단국대학교