Advertisement

In-Situ Monitoring of Ground Subsidence at the Intersection of Expwy 78 and High Speed Rail of Taiwan During 2003–2011

  • Muhsiung ChangEmail author
  • Ren-Chung Huang
  • Po-Kai Wu
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

This paper discusses results of a long-term onsite monitoring on ground subsidence and soil compressibility at the intersection of Expressway (Expwy) 78 and the High-Speed Rail of Taiwan (THSR). The intersection area is located on the Chuoswei River Alluvial Fan-Delta (CRAFD), the largest and thickest alluvial deposit to the mid-west of the island. The CRAFD has been subjected to serious subsiding problems for decades because of excess extractions of groundwater for agricultural and industrial usages. The constructions of Expwy 78 and THSR in the late 1990s imposed additional loadings on the soft ground and accelerated the subsidence problem, which was becoming a threat to the safety of THSR. An 8-year onsite monitoring program at the intersection was conducted between 10/2003 and 12/2011. The subsidence and compression of soils were measured through multi-leveled magnetic rings installed in the ground along boreholes of 300-m deep, as well as a GPS station and several level-surveying benchmarks. Results indicate the ground subsidence in the intersection area was 55.7 cm for the entire deposit in the 8-year monitoring period without the loadings of Expwy 78 and THSR. The loadings of Expwy 78 embankment and THSR piers/viaducts would contribute additional subsidence of 9.4 cm and 5.5 cm, respectively, to the ground in the same period. The total subsidence in the 8-year period was 70.6 cm, with an average rate of 8.6 cm/yr. Further analysis of the compression in soils with depth <300 m indicated that the shallower deposit (depth <70 m; Aquifer F1 and Aquitard T1) was least compressible, with a strain rate of <0.01%/yr; while the deeper deposit (depth 220–300 m; Aquifers F3, F4 and Aquitards T3, T4) was most compressible, with a strain rate of 0.03–0.05%/yr. Higher compressive rates in deeper soils suggest the extraction of groundwaters has gone deeper in recent decades.

Notes

Acknowledgments

The authors would like to thank the financial supports by Resources Engineering, Inc. Taiwan (NYST 102-272) and Ministry of Science and Technology (previously, National Science Council), Taiwan (NSC102-2815-C-224-020-E, MOST105-2815-C-224-003-E). Some background information and monitoring data provided by Central Geological Survey, Water Resources Agency, and Directorial General of Highways, Taiwan, are gratefully appreciated. The authors would like to thank the following personnel, J. H. Jhang, Y. C. Chang, C. F. Chuang and other members of Geotechnical Engineering Team of YunTech for carrying out the onsite monitoring work.

References

  1. Central Geological Survey (CGS): Summary report of groundwater monitoring network plan in Taiwan - Phase I (1992–1998), Ministry of Economic Affairs, Taiwan (1999). (in Chinese)Google Scholar
  2. Chappell, J., Shackleton, N.J.: Oxygen isotopes and sea level. Nature 324, 137–140 (1986).  https://doi.org/10.1038/324137a0CrossRefGoogle Scholar
  3. Chen, C.T., Hu, J.C., Lu, C.Y., Lee, J.C., Chan, Y.C.: Thirty-year land elevation change from subsidence to uplift following the termination of groundwater pumping and its geological implication in the Metropolitan Taipei Basin, Northern Taiwan. Eng. Geol. 95, 30–47 (2007).  https://doi.org/10.1016/j.enggeo.2007.09.001CrossRefGoogle Scholar
  4. Chien, J.Y.: Ground subsidence problem along coastal areas of Taiwan. Sino-Geotech. 20, 50–56 (1987). (in Chinese)Google Scholar
  5. Hung, W.C., Hwang, C., Chang, C.P., Yen, J.Y., Liu, C.H., Yang, W.H.: Monitoring severe aquifer-system compaction and land subsidence in Taiwan using multiple sensors: Yunlin, the southern Choushui River Alluvial Fan. Environ. Earth Sci. 59, 1535–1548 (2010).  https://doi.org/10.1007/s12665-009-0139-9CrossRefGoogle Scholar
  6. Liao, J.S., Pan, K.L., Haimson, B.C.: The monitoring and investigation of ground subsidence in southwest Taiwan. In: Proceedings of 4th International Symposium on Land Subsidence, pp. 81–96. IAHS Publication 200, May 1991Google Scholar
  7. Lin, L.H., Lin, H.R., Ke, A.H.W., Chou, T.H.: Petroleum potential of the pre-miocene formations in the Chianan Plain, Taiwan. Petrol. Geol. Taiwan 27, 177–197 (1992)Google Scholar
  8. Water Resources Agency (WRA): Multi-sensors Applied to Monitor Subsidence and Investigate Mechanism in Taipei, Changhua and Yunlin Area in 2011, Ministry of Economic Affairs, Taiwan (2011). ISBN 978-986-03-0205-9. (in Chinese with English abstract)Google Scholar
  9. Wu, J.M.: A retrospect on ground subsidence of Taipei Basin. Sino-Geotech. (20), 34–49 (1987). (in Chinese)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Department of Civil and Construction EngineeringNational Yunlin University of Science and Technology (YunTech)YunlinTaiwan
  2. 2.Graduate School of Science and TechnologyNational Yunlin University of Science and Technology (YunTech)YunlinTaiwan

Personalised recommendations