Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
권호 표지
DOI QR코드

DOI QR Code

Field Test of Tunnel Lining Temperature Variation Using Insulation Material

단열재를 활용한 터널라이닝 온도변화 현장 실험

  • Received : 2019.02.28
  • Accepted : 2019.03.29
  • Published : 2019.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

The low temperature and temperature difference (variation) may cause to deteriorate the integrity of tunnel constructed in cold region. An insulation material was developed and applied to the tunnel lining surface to keep the temperature of tunnel lining constant in spite of temperature variation at outdoor. The lining surface where the insulation material applied showed the less sensitive to temperature variation than non-applied lining surface.

한랭지역에 설치된 터널의 경우, 저온 및 온도차이로 인하여 터널구조물의 내구성이 저하될 수 있다. 외기온도의 변화에 따른 터널라이닝 및 배면 지반의 온도변화를 감소시키기 위하여 단열성능을 가진 도료(단열재)를 개발하였으며, 단열재를 공용 중인 터널 라이닝에 도포하였다. 단열재는 라이닝의 바닥면으로부터 1.5m 높이까지를 도포하였으며 동절기 기간동안 단열재가 도포된 구간과 도포되지 않은 구간의 라이닝 온도를 측정하여 단열재의 효과를 분석하였다. 라이닝의 온도측정은 위치별, 거리별, 외기 온도가 가장 높을 때, 가장 낮을 때를 중심으로 측정하여 비교하였다. 측정결과 단열재를 도포한 구간의 라이닝 온도저하가 적은 것으로 나타났으며, 최고 및 최저온도간의 온도차이도 적은 것으로 나타나 단열재의 성능을 확인하였다.

Keywords

HJHGC7_2019_v20n4_11_f0001.png 이미지

Fig. 1. i-Button installation overview plot

HJHGC7_2019_v20n4_11_f0002.png 이미지

Fig. 2. i-Button

HJHGC7_2019_v20n4_11_f0003.png 이미지

Fig. 3. Insulation thickness (1.1 mm)

HJHGC7_2019_v20n4_11_f0004.png 이미지

Fig. 4. Construction Phase

HJHGC7_2019_v20n4_11_f0005.png 이미지

Fig. 5. Temperature at the tunnel entrance

HJHGC7_2019_v20n4_11_f0006.png 이미지

Fig. 6. Temperature variation with distance

HJHGC7_2019_v20n4_11_f0007.png 이미지

Fig. 7. Temperature at the entrance (with ambient air highest temperature)

HJHGC7_2019_v20n4_11_f0008.png 이미지

Fig. 8. Temperature at the 8 m (with ambient air highest temperature)

HJHGC7_2019_v20n4_11_f0009.png 이미지

Fig. 9. Temperature at the entrance (with ambient air lowest temperature)

HJHGC7_2019_v20n4_11_f0010.png 이미지

Fig. 10. Temperature at the 8 m (with ambient air lowest temperature)

Table 1. Thermal discharge rate test result

HJHGC7_2019_v20n4_11_t0001.png 이미지

Table 2. I-Button characteristics (Maxim integrated Catalogue (2015))

HJHGC7_2019_v20n4_11_t0002.png 이미지

References

  1. An, J. W., Seo, J. E., Jung, M. H. and Seong, J. H. (2018), Classification of cold regions and analysis of the freeze-thaw repetition cycle based on heat transfer quantity by freezing test, Journal of Korean Tunnelling and Underground Space Association, Vol. 20, No. 6, pp. 957-972 (In Korean). https://doi.org/10.9711/KTAJ.2018.20.6.957
  2. Jin, H. W., Kim, T. S. and Hwang, Y. C. (2017), Analysis of temperature change of tunnel lining with heating element, Journal of the Korean Geo-Environmental Society, Vol. 18, No. 1, pp. 5-12 (In Korean). https://doi.org/10.14481/jkges.2017.18.1.5
  3. Jin, H. W. and Hwang, Y. C. (2017), A study on current extent of damage of road tunnel lining in cold regions (Gangwon-do), Journal of the Korean Geo-Environmental Society, Korean Geo-Environmental Society, Vol. 18, No. 1, pp. 49-58 (In Korean). https://doi.org/10.14481/jkges.2017.18.1.49
  4. Jun, K. J., Hwang, Y. C. and Yune, C. Y. (2017), Field measurement of temperature inside tunnel in winter in Gangwon Korea, Journal of the Cold Regions Science and Technology, Vol. 143, pp. 32-42. https://doi.org/10.1016/j.coldregions.2017.08.011
  5. Kim, N. Y. and Shim, J. W. (2013), Case studies on the tunnel frost due to the low temperature, Korea Ged-synthetice society, 2013 spring Geo-synthetics Conference, pp. 107-110 (in Korean).
  6. Maxim integrated Catalogue. (2015), DS1922L/DS1922T, iButton Temperature Loggers with 8KB Datalog Memory, pp. 1-52
  7. Son, H., S., Jun, K. J. and Yune, C. Y. (2017), Analysis on freezing reduction of road tunnels with heat insulation method during winter, Journal of Korean Geotechnical Society, Vol. 33, No. 8, pp. 17-27 (In Korean). https://doi.org/10.7843/KGS.2017.33.8.17
  8. Zhang, S., Lai, Y., Zhang, X., Pu, Y. and Yu, W. (2004), Study on the damage propagation of surrounding rock from a cold-region tunnel under freeze-thaw cycle condition, Tunnelling and Underground Space Tchnology, Vol. 19, pp. 295-302. https://doi.org/10.1016/j.tust.2003.11.011