地震与非地震诱发滑坡的运动特征对比研究

›› 2010, Vol. 31 ›› Issue (S2): 31-37.

地震与非地震诱发滑坡的运动特征对比研究

樊晓一

西南科技大学土木工程与建筑学院，四川绵阳 621010

收稿日期:2010-04-06 出版日期:2010-12-10 发布日期:2011-01-12
作者简介:樊晓一，男，1974年生，博士，副教授，主要从事岩土工程及地质灾害教学与研究工作。
基金资助:
科技部国际合作项目（No. 2009DFB20190）；四川省教育厅项目（No. 09ZA130）；西南科技大学科研基金（No. 07ZX7133）。

Comparative study of movement behaviors of seismic and non-seismic induced landslides

FAN Xiao-yi

School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China

Received:2010-04-06 Online:2010-12-10 Published:2011-01-12

摘要/Abstract

摘要：

针对不同诱发机制的滑坡运动特征差异，以滑坡的总斜率和阻止系数为评价指标，分析滑坡的总斜率、阻止系数与滑坡规模、总能量的关系，对比研究了地震和非地震滑坡的总斜率、地形阻止系数的特征。研究结果表明：地震与非地震滑坡的规模越大在运动过程中受到的阻止作用越小；地震滑坡和非地震滑坡的总斜率都随滑坡规模和总能量增加而减小，但地震滑坡减小的速率大于非地震滑坡；地震滑坡的平均阻止系数约为0.4～0.5，而非地震滑坡的平均阻止系数约为同规模地震滑坡的40%～50%。因此，滑坡的运动特征不仅受滑坡规模及总能量控制，还显著地受滑坡的诱发机制和地形阻止等因素的影响。

关键词: 地震滑坡, 非地震滑坡, 总斜率, 阻止系数

Abstract:

Aiming at different landslides movement behavior due to different inducement mechanisms, the total slopes and block coefficients of landslides were considered as evaluation indices to analyze the relationship between total slopes, block coefficients and landslide volumes, total energies; the total slopes and block coefficients of seismic and non-seismic induced landslides were studied contrastively. The results indicate that the volumes of seismic and non-seismic induced landslides are larger; the blocks of ground are smaller. The total slopes of seismic and non-seismic induced landslides decrease with the increase of volumes and energies; but the decrease ratios of seismic induced landslides are larger than non-seismic induced landslides. The average block coefficients of seismic induced landslides are about 0.4 to 0.5 and the average block coefficients of non-seismic induced landslides are about 40% to 50% of seismic induced landslides at the same volume. The results show that landslide movement behaviors are not only controlled by the volume and total energy, but also restricted by the landslide inducement mechanism and terrain block.

Key words: seismic landslide, non-seismic landslide, total slope, block coefficient

中图分类号:

P 642.22

樊晓一. 地震与非地震诱发滑坡的运动特征对比研究[J]. , 2010, 31(S2): 31-37.

FAN Xiao-yi. Comparative study of movement behaviors of seismic and non-seismic induced landslides[J]. , 2010, 31(S2): 31-37.

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