KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지
DOI QR코드

DOI QR Code

Monitoring for Constructed Revetments Using Biopolymer Mixed Soil

바이오폴리머 배합토를 이용한 호안 조성과 모니터링

  • Kim, Myounghwan (Korea Institute of Civil Engineering and Building Technology) ;
  • Lee, Du Han (Korea Institute of Civil Engineering and Building Technology)
  • 김명환 (한국건설기술연구원 수자원하천연구본부) ;
  • 이두한 (한국건설기술연구원 수자원하천연구본부)
  • Received : 2020.11.24
  • Accepted : 2021.10.27
  • Published : 2021.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Biopolymer is a general concept for high molecular compounds produced by living organisms. Among them, the xanthan and β-glucan, which are organic polymer mixture produced by micro-organisms, are mainly used to increase the viscosity of a substance. And diluting in water and mixing with sand or clay can increase compressive strength and shear strength. In this study, mixed soil prepared by mixing soil with xanthan and beta-glucan based biopolymers specially developed for the purpose of increasing soil strength was applied to the river bank revetment, and changes during winter were measured using ground LiDAR. As a result of analyzing winter changes in major sections using three-dimensional point cloud data obtained through ground LiDAR, there were no changes to the extent that it was difficult to confirm with the naked eye in the two sections coated with biopolymer blended soil. However, soil loss due to Rill erosion was confirmed in the natural embankment section where biopolymer blended soil was not used.

바이오폴리머는 살아있는 유기체에 의해 생성되는 고분자 화합물의 통칭이다. 이 중 미생물의 부산물로 만들어지는 유기성 고분자 화합물인 잔탄, 베타글루칸 등은 물질의 점성을 높이는데 사용되는데 이를 물에 희석하여 모래나 진흙과 혼합하면 압축강도와 전단강도를 높일 수 있다. 본 연구에서는 특수하게 흙의 강도를 높이기 위한 목적으로 개발된 잔탄 및 베타글루칸 계열의 바이오폴리머와 흙을 혼합하여 제조한 배합토를 하천 제방 호안에 도포하고 겨울을 지낸 후의 변화를 3차원 지상 LiDAR를 활용하여 모니터링 하였다. 동절기 전후 지상 LiDAR 측량을 통하여 취득한 3차원 점군자료를 이용하여 테스트베드 주요 구간의 변화를 분석한 결과 바이오폴리머 배합토를 도포한 두 구간에서는 눈으로는 확인하기 어려울 정도로 변화가 없었던 반면 바이오폴리머 배합토를 사용하지 않은 자연제방 구간에서는 세류침식(Rill erosion)으로 인한 토양손실이 확인되었다.

Keywords

Acknowledgement

본 연구는 국토교통부 물관리연구사업의 연구비지원(과제번호 20AWMP-B114111-05)에 의해 수행되었습니다. 본 논문은 2020 CONVENTION 논문을 수정·보완하여 작성 되었습니다.

References

  1. ASTM (2007). Standard test method for determination of rolled erosion control product performance in protecting earthen channels from stormwater-induced erosion, ASTM D6460-07, ASTM International.
  2. Bakula, K., Pilarska, M., Salach, A. and Kurczynski, Z. (2020). "Detection of levee damage based on UAS data - optical imagery and LiDAR point clouds." ISPRS International Journal of Geo-Information, Vol. 9, No. 4, pp. 248. https://doi.org/10.3390/ijgi9040248
  3. Chang, I. H., Prasidhi, A. K., Im, J. Y., Shin, H. D. and Cho, G. C. (2015). "Soil treatment using microbial biopolymers for anti-desertification purposes." Geoderma, Vol. 253-254, pp. 39-47. https://doi.org/10.1016/j.geoderma.2015.04.006
  4. Choung, Y. J. (2015). "Development of a levee stability assessment technique using multispectral orthoimages and LiDAR data." Journal of Korean Society of Hazard Mitigation, Vol. 15, No. 2, pp. 293-299 (in Korean). https://doi.org/10.9798/KOSHAM.2015.15.2.293
  5. Han River Flood Control Office (2020). Yeoncheongun (Imjingyo) gauging station water elevation data, Available at: http://www.hrfco.go.kr/popup/waterlevelPopup.do?Obscd=1021680 (Accessed: March 31, 2020).
  6. Kim, J. H., Pyeon, M. W., Kim, S. K., Hwang, Y. S. and Kang, N. G. (2009). "Experiment of computation of ground cutting volume using terrestrial LiDAR data." Journal of Korean Society for Geospatial Information System, Vol. 17, No. 2, pp. 11-17 (in Korean).
  7. Korea Institute of Civil Engineering and Building Technology (KICT), Korea Advanced Institute of Science and Technology (KAIST), Gwangju Institute of Science and Technology (GIST). (2021). Biopolymer mixture mixed with plant fiber and slope reinforcement method using the same, No. 1020200145007 (in Korean).
  8. Lee, D. H. and Kim, M. H. (2020). "Evaluation of critical tractive forces of vegetation mats enhanced with biopolymer mixed soil." Journal of Korea Water Resources Association, Vol. 53, No. 3, pp. 167-179 (in Korean). https://doi.org/10.3741/JKWRA.2020.53.3.167
  9. Shin, D. S. and Seo, J. C. (2011). "The short-term morphological changes of the beach and dune using by terrestrial LIDAR." Journal of The Korean Geomorphological Association, Vol. 18, No. 4, pp. 283-296 (in Korean).
  10. Tarolli, P., Sofia, G., Calligaro, S., Prosdocimi, M., Preti, F. and Dalla Fontana, G. (2015). "Vineyards in terraced landscapes: New opportunities from lidar data." Land Degradation & Development, Vol. 26, No. 1, pp. 92-102. https://doi.org/10.1002/ldr.2311
  11. Water Resources Management Information System (2020). Daily rainfall data in the Yeoncheongun (Imjingyo) gauging station, Available at: http://www.wamis.go.kr:8081/eng/RF_YRDATA.ASPX?code=10214010&name=Yeoncheongun(Imjingyo) (Accessed: March 31, 2020).