Inversion of Initial Geo-Stress in High and Steep Slope

Zhong Fan Yuan; Pei Hua Xu; Zhao Rong Ye

doi:10.4028/www.scientific.net/AMM.170-173.1325

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 170-173Inversion of Initial Geo-Stress in High and Steep...

Inversion of Initial Geo-Stress in High and Steep Slope

Abstract:

At present, due to various reasons, cannot do a large number of field measurements, and the measured results often can only reflect the local stress field distribution. What’s more, the measured results has discreteness, it’s difficult to describe the law of the initial stress field distribution in the entire region. This paper combines topographic and geological conditions and the measured in-situ stress value of Jinping I hydropower station dam area, using FLAC3D4.0, select geological section profile of II1 exploration line for reference, to simulate the incised process of the valley. We get the stress field distribution when rock gravity acting alone, and exert horizontal tectonic stress based on the calculate result of gravity field in the VI terrace model. We inversion the distribution of current Valley stress field, and validate the rationality of the design after compare with the measured data. We obtain the features of stress field of current valley. And we also proved that the regional principal compressive stress plays a decisive role in the formation of the current valley stress field.

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Periodical:

Applied Mechanics and Materials (Volumes 170-173)

Pages:

1325-1329

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.170-173.1325

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Online since:

May 2012

Authors:

Zhong Fan Yuan, Pei Hua Xu, Zhao Rong Ye

Keywords:

FLAC^3D, Jinping I Hydropower Station, Stress Field, Valley Development

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