Research on Plugging Technology of Underwater Shield Tunnel During Operation Period

Chaochao Hang

doi:10.54097/p8mqte43

Authors

Chaochao Hang

DOI:

https://doi.org/10.54097/p8mqte43

Keywords:

Slip casting; Leak stoppage; Leakage of water; segment.

Abstract

With the development of urban rail transit technology, subways can quickly spread across the country's major first-tier cities. In 2019, Zhengzhou Metro Line 5 was officially put into operation. During its normal operation, due to the complex underground hydrogeological conditions and the reduced blocking efficiency of the segment system, the segment leakage in the section was serious. Under the pressure and corrosion of the external groundwater, the self-waterproofing system and the sealing gasket fail, and the uneven settlement between the segments causes misalignment. The resulting drips, leaks and wet stains affect the safety of the electrical equipment in the tunnel and the normal operation of the train. Therefore, it is necessary to deeply discuss the plugging process at the water seepage site, and propose treatment measures for water leakage at segment joints, segment bolt holes and segment secondary grouting holes. The results show that the modified epoxy resin grouting material can quickly repair the leakage point of shield segment, and can provide a reasonable reference for the treatment of shield tunnel water leakage in the later operating period.

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References

[1] Dai X, Wang J, Li Z et al. Causes and prevention status of water leakage in shield tunnel [J]. Yangtze River of the People, 2022,53(11):186-192

[2] Gong C, Ding W, Lei M et al. Study on the characteristics and remediation of water leakage in cross-river shield tunnel [J]. Modern Tunnel Technology,2020,57(S1):247-254.

[3] Du. Large diameter shield tunnel segment of seepage prevention and governance [J]. Journal of construction supervision, 2020, No. 257 (11) : 80-83.

[4] Xiao M . Underwater tunnel design technology [M] Beijing: China Railway Press, 2016:11-22

[5] Liu S. Study on the evolution mechanism of structural performance degradation of shield tunnel under erosion environment [D]. Southwest Jiaotong University,2017.

[6] Li D, Jiang Y. Research on seepage causes and treatment technology of underwater shield tunnel during operation [J]. China Building Waterproofing,2020,No.428(10):14-17.

[7] Huang S, LI C, HU Y. Study on construction technology of deformation joint leakage treatment [J]. Port Engineering Technology,2023,60(01):83-86.

[8] Xiao M, XIE H, WANG S et al. Evolution and prospect of shield tunnel segment joint waterproofing system [J]. Tunnel Construction (Chinese and English), 201,41(11):1891-1902.

[9] Han. Preparation and properties of water-soluble polyurethane plugging grouting materials [D]. Xi 'an University of Science and Technology,2015.

[10] Chen. Application of oil-based and water-based polyurethane caulking agent in caulking [J]. Shanxi Architecture, 2014, 40(19):117-118. (in Chinese)

[11] Li L, SUN J, NIU Y. Research on the causes and treatment technology of steel pipe leakage in shield tunnel of rail transit [J]. Tunnel and Rail Transit,2021(S2):165-168.

[12] Wu X. Causes of water leakage and construction treatment technology of shield tunnel segment across river [J]. Northern Architecture, 2019,5(06):72-74.

[13] Bi X, Zhang S, Peng F et al. Analysis and thinking on the problem of water leakage at the spliced joint of shield shield [J]. China Building Waterproofing,2022,No.454(09):37-40.

[14] Li Y, DING W, Yang L et al. Experimental study on water leakage and caulking treatment of shield tunnel segment joints [J]. Modern Tunnel Technology,2021,58(05):167-172.

[15] Lu C, Li T, YUAN S. Causes and treatment measures of water leakage in underwater shield tunnel during operation [J]. Engineering Construction, 201,53(10):44-49.

[16] Chen S, WANG J, LIU W et al. Comprehensive water leakage remediation technology of shield tunnel [J]. Railway Construction Technology,2019,No.319(12):101-106.

[17] Zhu L, JIANG Y, JIANG X. Research on monitoring, warning and treatment of water leakage in long underwater shield tunnel [J]. Modern Transportation Technology,2023,20(02):37-41+53.

[18] Yang Z, ZONG J, RAO Q. Analysis of influence of water leakage in shallow covered shield tunnel on tunnel convergence deformation and surface settlement [J]. Modern Tunnel Technology,202,59(S1):228-234.

[19] Li W, He C, Xie H. Control of secondary grouting pressure in rock shield tunnel with high water pressure [J]. China Railway Science,2006(01):32-37.

[20] Lin F, Wei X, et al. Analysis and research of testing device for grouting outside shield segment [J]. Construction Mechanization, 2023,44(04):27-31.

[21] Gao. Cause analysis and treatment technology of pipe segment leakage in a shield tunnel of a subway crossing the river [J]. China Building Waterproofing,2015,No.314(06):32-36.