抗滑桩加固斜坡坡面位移场特征及演化模型试验研究

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Abstract The surface displacement field of slope stabilized with piles in physical model tests was obtained using the computer aided inspection. The variances D(X) as the characteristics variable of the surface displacement field at different loading levels were calculated and used to describe the whole deformation and failure process of the slope. The dynamic parameter of slope displacement field and the fractals-Hurst index of variance of the surface displacement field were determined by means of R/S analysis. Experimental results show that the variance D(X) of the surface displacement field can be used to describe the formation and penetrating of the cracks and the failure of the slope. The severe deformation localization occurred on the slope surface and the cracks were developed. The varianceD(X) increased sharply when the deformation localization occurred. It is found that the Hurst index of the surface displacement field variance had a trend of low value-increase-dropping during the process of landslide. The Hurst index of variance of the surface displacement field decreases before the destabilization of the slope.

Key words： slope engineering anti-sliding pile surface displacement field physical model test computer aided inspection(CAI) Hurst index

Received: 02 July 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I4/679

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