水电工程坝基玄武岩体波速与变形模量关系

周洪福; 聂德新; 王春山

doi:10.3799/dqkx.2015.171

Volume 40 Issue 11

Nov. 2015

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Zhou Hongfu, Nie Dexin, Wang Chunshan, 2015. Correlation between Wave Velocity and Deformation Modulus of Basalt Masses as Dam Foundation in Hydropower Projects. Earth Science, 40(11): 1904-1912. doi: 10.3799/dqkx.2015.171

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Zhou Hongfu, Nie Dexin, Wang Chunshan, 2015. Correlation between Wave Velocity and Deformation Modulus of Basalt Masses as Dam Foundation in Hydropower Projects. Earth Science, 40(11): 1904-1912. doi: 10.3799/dqkx.2015.171

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Correlation between Wave Velocity and Deformation Modulus of Basalt Masses as Dam Foundation in Hydropower Projects

doi: 10.3799/dqkx.2015.171

1.
Chengdu Center, China Geological Survey, Chengdu 610081, China
2.
College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China

Received Date: 2014-12-31
Publish Date: 2015-11-15

Abstract

Abstract

Deformation modulus is an important parameter for rock engineering design. However, the relation between longitudinal wave velocity and deformation modulus is often used to estimate the deformation modulus of large-scale and deep rock mass in the hydroelectric projects because it is difficult to conduct many in-situ and laboratory deformation modulus tests due to the limited funds, time and test size during the engineering survey and the test results have no general representativeness. In this paper, the intrinsic relation between longitudinal wave velocity and rock deformation modulus is theoretically explained based on the wave differential equation. Meanwhile, 132 in-situ test data derived from 4 hydropowers are used to set up an experience formula between longitudinal wave velocity and deformation modulus for basalt in the Jinsha River area. The results show that there is close relation between the basalt longitudinal wave velocity and its deformation modulus. The deformation modulus difference of different basalt rock masses by calculating of longitudinal wave velocity is small when V_p < 4 500 m/s. While it becomes larger when V_p > 4 500 m/s. The optimal equation is helpful to evaluate the deformation modulus of basalt rock mass, and it offers a quick and scientific method for selecting basic parameters of dam foundation in the hydropower projects.
- basalt,
- hydropower project,
- deformation modulus,
- longitudinal wave velocity,
- rock mass of dam foundation,
- correlation,
- geotechnical engineering.

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References(29)

References

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Correlation between Wave Velocity and Deformation Modulus of Basalt Masses as Dam Foundation in Hydropower Projects

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