›› 2009, Vol. 30 ›› Issue (1): 175-180.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of construction behavior of composite geomembrane rockfill dam on thick alluvium deposit

CEN Wei-jun1, SHEN Chang-song1, TONG Jian-wen2   

  1. 1. College of Water Conservancy & Hydropower Engineering, Hohai University, Nanjing 210098, China; 2. Chengdu Hydroelectric Investigation & Design Institute, China Hydropower Consulting Group, Chengdu 610072, China
  • Received:2008-01-22 Online:2009-01-10 Published:2011-01-14

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Abstract:

Based on the brief discussion of main mechanical properties of geomembrane, the nonlinear finite element method is applied to calculate the deformation and stress of a composite geomembrane rockfill dam on thick alluvium deposit which is under construction, with emphasis on the mechanical behaviors of composite geomembrane and anti-seepage concrete wall. According to the calculation results, several types of composite geomembrane are discussed and the appropriate one is chosen for the dam. Furthermore, the sensitivity analysis of the earth-rockfill material parameters on the mechanical characters of composite geomembrane and concrete wall is done. The analysis results show they can meet the need of the dam’s normal operation.

Key words: composite geomembrane, rockfill dam, anti-seepage concrete wall, deformation and stress, sensitivity

CLC Number: 

  • TV 640.31
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