Research on Seepage Characteristics of Deep Cut Canal under Dewatering Well

Abstract:

In view of the problems of complex geological conditions with high underground water level, large permeability coefficient of soil and the presence of large seepage hazard of deep cut canal and deep foundation pit project of South-to-North Water Transfer Project, China, research on seepage characteristics of digging canals under dewatering well is carried out by finite element analysis, and the FORTRAN procedure is programmed. The three-dimensional finite element model of a digging canal is built, and the seepage field of the different conditions of the canal is simulated, the water head distribution, saturation line and leakages are obtained, and the rules and characteristics of steady seepage field under design impervious system are analyzed. The results indicate that the method can exactly determine the key overflow point and saturation line of canal, and well predict seepage field in canal. The results should be of guiding significance to design and construct retaining engineering in deep cut canal and deep foundation pit.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 588-592
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.588
• Online since: October 2013
• Authors: Kai Yun Yang, Xiang Yu Li, Lin Hao Li, Quan Long Li
• Keywords: Deep Cut Canal, Seepage, Seepage Control Measures, Well Dewatering

References

[1] P. Sjödahl, T. Dahlin, S. Johansson, Embankment dam seepage evaluation from resistivity monitoring data, Near Surface Geophysics, 7 (2009) 463-474.

DOI: 10.3997/1873-0604.2009023

[2] X. Niu, Characteristics of reservoir defects and rehabilitation technology in China, Chinese Journal of Geotechnical Engineering, 32 (2010) 153-157.

[3] Z. Shen, X. Chen, Y. Wu, Penalty function element-free method for solving seepage field of embankments, Journal of Hohai University (Natural Sciences), 36 (2008) 44-48.

[4] Z. Shen, X. Chen, Y. Sun, Analysis of the steady seepage field with free surface using element-free Galerkin method, Journal of Xi¢an Shiyou University( Natural Science Edition), 22 (2007) 92-95.

[5] Q. Zhang, Z. Wu, The improved cut-off negative pressure method for unsteady seepage flow with free surface, Chinese Journal of Geotechnical Engineering, 27 (2005) 48-54.

[6] Z. Shu, J. Deng, L. Li, Application of element conduct matrix regulative method by encrypting Gauss point in seepage analysis with free surface, Journal of Sichuan University (Engineering Science Edition), 39 (2007) 48-52.

[7] H. Cui, Y. Zhu, Improved procedure of nodal virtual flux of global iteration to solve seepage free surface, Journal of Wuhan University of Technology (Transportation Science & Engineering), 33 (2009) 238-241.

[8] S. Pan, X. Mao, Z. Bai, Seepage field finite element simulation of faced rock fill dam under cases of vertical joints and seal failure, Rock and Soil Mechanics, 29 (2008) 145-149.

[9] Y. Li, H. Lv, Study on Seepage Calculation Model for the Concrete Face Slab with Cracks, Journal of Basic Science and Engineering, 17 (2009) 668-674.

[10] S. Li, Y. Li, Z. Si, et al, A seepage computational model of face slab cracks based on equi-width joint constant flow, Advances in Engineering Software, 41 (2010) 1000-1004.

DOI: 10.1016/j.advengsoft.2010.04.004

[11] Y. He, K. Li, J. Chai, Numerical analysis of unsteady seepage through fracture network in rock mass simulated by the Monte–Carlo method, Journal of Basic Science and Engineering, 13 (2005) 81-86.