Selection of concrete lining corrosion protection method for large sewer tunnels

Joon-Shik Moon; Sungjune Lee

doi:10.9711/KTAJ.2014.16.4.347

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2014 Vol.16, Issue 4 Next Page

Selection of concrete lining corrosion protection method for large sewer tunnels 하수터널의 콘크리트 라이닝 부식 방지공법 선정방법에 관한 고찰

31 July 2014. pp. 347-360

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Abstract

Recently construction of large sewer tunnels used also as underground sluiceways/storages is increasing in order to prevent urban inundation, untreated sewage flow into rivers from combined sewer overflows and consequential river pollution due to climate change. Most of these large sewer tunnels are constructed with concrete and the concrete lining should be protected from corrosion caused by hydrogen sulfide(H2S). This paper introduced popular concrete corrosion protection methods for large sewer tunnels with 100-plus years of life cycle, and pros and cons of each corrosion protection methods were described by giving specific examples. However, it is difficult to objectively assess corrosion protection alternatives because of insufficient track record of corrosion protection methods applied to large sewer tunnels. In this paper, the evaluation process for selecting a corrosion protection alternative was introduced for large sewer tunnels using a case study.

Keywords

Large sewer tunnel

Hydrogen sulfide

Concrete lining corrosion

Concrete corrosion protection

최근 기후변화로 인한 도시침수와 합류식 하수관거 월류수 (combined sewer overflow)로부터 처리되지 않은 하수의 하천유입, 그리고 그에 따른 하천의 오염의 방지를 위해 지하방수로/저류조 겸용의 대형 하수터널의 건설이 증가하고 있다. 이러한 대형 하수터널의 경우 대부분 콘크리트 라이닝을 적용하고 있지만 하수관거 내에서 발생되는 황화수소(H2S)로 인하여 콘크리트가 부식될 수 있으므로 이에 대한 적절한 보호공이 필요하다. 본 논문에서는 최소 100년의 수명을 고려하여 설계된 대형 하수터널의 콘크리트 라이닝 부식을 방지하기 위해 여러 공법들을 소개하고 각 공법의 일반적인 장단점과 설계 사례를 설명하였다. 하지만 대형 하수터널 라이닝의 부식방지 공법들의 적용 실적이 부족하여 부식방지 공법을 적용한 터널설계 대안에 대한 객관적인 평가가 쉽지 않다. 따라서 본 논문은 설계 사례연구를 통해 콘크리트 라이닝 부식방지 공법선정 프로세스를 소개하였다.

키워드

대형 하수터널

황화수소

콘크리트 라이닝 부식

콘크리트 방식 공법

References

1.Chapman, D.R., Frank, G. (2005), “Design consid-erations for corrosion protection in large diameter sewer tunnel construction”, North American Society for Trenchless Technology NO-DIG 2005, paper A-3-02, pp. 1-13.

2.CPI (2008), Technical Memorandum on Recomm-ended Path Forward for OOO Lined Portion of the OOO Tunnel, p. 20.

3.Maguire, C. & Iskander, E. (2008) “The use of polymer concrete in sewage tunnels for one-pass segmental lining”, North American Tunneling 2008 Proceedings, pp. 146-151.

4.Nixon, R. (2006), “Odor and corrosion problems: two related issues requiring distinctly separate control strategies”, The NEWEA Journal, pp. 23-27.

5.Joyce, J. (2008) An evaluation of lining technologies for corrosion protection and rehabilitation of large diameter sewer tunnels and interceptors, OCTC Technical Report, p. 40.

6.Redner, J.A., His, R.P., Esfandi, E.J., Sydney, R., Jones, R.M., Won, D., Andraska, J. (2004), Evaluation of protective coatings for concrete, Final Report, County Sanitation Districts of Los Angeles County, Whittier, California, p. 36.

7.Tuxworth, J., Bosco, D., Terry, A. (2007), “Specifi-cation and quality assured installation of HDPE corrosion protection liners”, Pipes Wagga Wagga, pp. 1-33

8.Uhren, D.J., Gilbert, G.W. (2001), “Matrix evaluation to resolve corrosion risks for a sewer tunnel in difficult glacial soils”, 2001 RETC Preceedings, pp. 299-308.

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 16
No :4
Pages :347-360
Received Date : 2014-05-22
Revised Date : 2014-06-19
Accepted Date : 2014-06-27
DOI :https://doi.org/10.9711/KTAJ.2014.16.4.347

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

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