바로가기메뉴

본문 바로가기 주메뉴 바로가기

ACOMS+ 및 학술지 리포지터리 설명회

  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
사전등록 바로가기
 

logo

ISSN : 2233-8292

논문 상세

이전 다음
논문 투고

Vol.21 No.2
Citation Share

해수가 슬러리 쉴드 TBM 공법 적용성에 미치는 영향

Effect of seawater on the applicability of a slurry shield TBM

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2019, v.21 no.2, pp.243-256
https://doi.org/10.9711/KTAJ.2019.21.2.243
유영무 (고려대학교 건축사회환경공학부)
김해만 (고려대학교)
김도형 (고려대학교)
이인모 (고려대학교)
유영무, 김해만, 김도형, & 이인모. (2019). 해수가 슬러리 쉴드 TBM 공법 적용성에 미치는 영향. (사)한국터널지하공간학회, 21(2), 243-256, https://doi.org/10.9711/KTAJ.2019.21.2.243
  • 다운로드 수
  • 조회수
PDF 다운로드

초록

슬러리 쉴드 TBM (Slurry shield TBM) 공법에서 벤토나이트 슬러리의 침투와 필터 케이크의 형성 여부는 공법의 적용성에 영향을 미치는 중요한 요소이다. 그러나 벤토나이트 슬러리는 해수와 접촉하였을 때 팽윤성과 점도가 저하되어 공법에 대한 적용성을 확보하기 어렵다. 본 연구에서는 해수의 영향에 따른 슬러리 쉴드 TBM 공법의 적용성 변화를 평가하기 위해 슬러리의 해수 비율을 다르게 하여 주입 실험을수행하였고 해수가 슬러리의 폐색 현상에 미치는 영향을 확인하였다. 그 결과, 해수의 비율이 0%에서 20%까지 증가할수록 폐색 효과에 의한 슬러리 쉴드 TBM 공법의 적용성을 나타내는 slurry clogging criteria (SCC)가 최대 67%까지도감소하는 것을 확인하였다. 또한 슬러리의 물리적 성질이 동일함에도 지반 조건에 따라 SCC값이 공법 적용에 문제가 없는 수준에서 공법 적용을 위해 슬러리에 추가적인 처리를 요하는 수준으로 변화하는 것을 통해 슬러리 쉴드 TBM의 적용성을 평가할 때 슬러리의 특성뿐만 아니라 지반 조건에 대한 고려도 필요함을 입증하였다.

keywords
슬러리, 벤토나이트, 해수, 폐색현상, Slurry, Bentonite, Seawater, Clogging effect

Abstract

Formation of filter cake with little slurry penetration into the tunnel face ground is an essential factor to successfully apply the slurry shield tunnel boring machine (TBM) for tunnelling work. However, when the bentonite slurry is in contact with seawater, it is not easy to guarantee the filter cake formation due to decrease of the swelling volume and viscosity of the slurry. In this study, in order to evaluate the effect of the seawater on the applicability of the slurry shield TBM method, the slurry injection tests were carried out with the variation of seawater percentage contained in the slurry samples as well as the variation of soil types. And then, the effect of these two factors on the slurry clogging phenomena was theoretically and experimentally figure out. As a result, it was found that the value of the slurry clogging criteria (SCC) indicating the applicability of the slurry shield TBM significantly decreases up to 67% as the percentage of seawater increases from 0% up to 20%. In addition, it was found to be necessary to take into account both the characteristics of slurry and soil types together when judging the applicability of the slurry shield TBM method by assessing the slurry penetration characteristics that will occur during tunnelling work.

keywords
슬러리, 벤토나이트, 해수, 폐색현상, Slurry, Bentonite, Seawater, Clogging effect

참고문헌

1.

1. Almahdawi, F.H.M., Al-Yaseri, A.Z., Jasim, N. (2014), “Apparent viscosity direct from marsh funnel test”, Iraqi Journal of Chemical and Petroleum Engineering, Vol. 15, No. 1, pp. 51-57.

2.

2. Anagnostou, G., Kovari, K. (1994), “The face stability of slurry-shield-driven tunnels”, Tunnelling and Underground Space Technology, Vol. 9, No. 2, pp. 165-174.

3.

3. Arya, L.M., Dierolf, T.S. (1989), “Predicting soil moisture characteristics from particle-size distribution:an improved method to calculate pore radii from particle radii”, Proceedings of the International Workshop on Indirect Methods for Estimating the Hydraulic Properties of Unsaturated Soils, University of California, Riverside, CA, pp. 115-124.

4.

4. ASTM (2018), “Standard test method for swell index of clay mineral component of geosynthetic clay liners”, ASTM International, West Conshohocken, PA.

5.

5. DIN 4127 (2014), “Earthworks and foundation engineering - test methods for supporting fluids used in the construction of diaphragm walls and their constituent products”, Deutsches Institut für Normung, Berlin.

6.

6. Fritz, P. (2007), “Additives for slurry shield in highly permeable ground”, Rock Mechanics and Rock Engineering, Vol. 40, No. 1, pp. 81-95.

7.

7. Gruesbeck, C., Collins, R.E. (1982), “Entrainment and deposition of fine particles in porous media”, Society of Petroleum Engineers Journal, Vol. 22, No. 6, pp. 847-856.

8.

8. Kim, D.Y., Lee, J.W., Jung, J.H., Kang, H.B., Jee, S.H. (2017), “A fundamental study of slurry management for slurry shield TBM by sea water influence”, Journal of Korean Tunnelling and Underground Space Association, Vol. 19, No. 3, pp. 463-473.

9.

9. Kim, J.S., Lee, I.M., Jang, J.H., Choi, H. (2009), “Groutability of cement-based grout with consideration of viscosity and filtration phenomenon”, International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 33, No. 16, pp. 1771-1797.

10.

10. Krause, T. (1987), Schildvortrieb mit flüssigkeits-und erdgestützter ortsbrust, Ph.D. Thesis, Tech-nischen Universität Carolo-Wilhelina, pp. 1-155.

11.

11. Min, F.L., Zhu, W., Xia, S., Wang, R., Wei, D., Jiang, T. (2014), “Test study on airtight capability of filter cakes for slurry shield and its application in a case”, Advances in Materials Science and Engineering, Vol. 2014, pp. 1-8.

12.

12. Reddi, L.N., Bonala, M.V.S. (1997), “Analytical solution for fine particle accumulation in soil filters”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 123, No.12, pp. 1143-1152.

13.

13. Ryu, Y.M., Kwon, Y.S., Kim, T.H., Lee, I.M. (2019), “Slurry clogging criteria for slurry shield tunnelling in highly permeable ground”, KSCE Journal of Civil Engineering, Under Review.

(사)한국터널지하공간학회

논문 투고 OA 정책