Stress and Strain of High Earth-rock Dam with Composite Geomembrane Core-wall and Inclined-wall

JIANG Hai-bo

doi:10.3969/j.issn.1001-5485.2014.01.0112014,31(01):53-57,76

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Journal of Changjiang River Scientific Research Institute ›› 2014, Vol. 31 ›› Issue (1) : 53-57. DOI: 10.3969/j.issn.1001-5485.2014.01.0112014,31(01):53-57,76

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Stress and Strain of High Earth-rock Dam with Composite Geomembrane Core-wall and Inclined-wall

JIANG Hai-bo

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Abstract

Stress and deformation properties and hydraulic fracturing performance have been key issues in the design and construction of high earth-rock dam. In order to research the stress and deformation properties of high earth-rock dam treated with composite geo-membrane,non-linear FEM and Duncan-Chang E-B Model were employed to analyze the stress and deformation of a composite geo-membrane rock-fill dam of 127.5m height. The stress-strain and deformation behaviors of dam shell rockfill and the seepage of dam body in project-completion period and stable seepage period were calculated and analyzed. Hence the stress and deformation behaviors of composite geomembrane high earth-rock dam with core-wall and inclined wall were obtained. Hydraulic fracturing was also estimated. The calculation results show that the stress and deformation behaviors of dam body and composite geo-membrane are in normal state. Composite geo-membrane is effective in reducing phreatic line and pore water pressure,improving stress-strain properties,and preventing hydraulic fracturing.

Key words

composite geo-membrane / high earth-rock dam / core wall / inclined wall / stress-strain

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JIANG Hai-bo. Stress and Strain of High Earth-rock Dam with Composite Geomembrane Core-wall and Inclined-wall[J]. Journal of Changjiang River Scientific Research Institute. 2014, 31(1): 53-57 https://doi.org/10.3969/j.issn.1001-5485.2014.01.0112014,31(01):53-57,76

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