土工基础

›› 2015, Vol. 29 ›› Issue (1): 90-93.

• 工程实录 • 上一篇    下一篇

潮汐应力对滑坡的触发机理及与时间相关性的研究

高 鹏1，刘裕华2   

  1. （1.山东电力工程咨询院有限公司, 济南 250013; 2.电力规划设计总院, 北京 100120）
  • 收稿日期:2014-08-27 出版日期:2015-02-20 发布日期:2015-03-13
  • 作者简介:高 鹏（1980-），男，工程师,主要从事岩土工程和边坡工程研究。

The Relationship Between the Tidal Forces and the Landslide Triggering Time

GAO Peng1, LIU Yuhua2   

  1. (1. Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013;
    2. Electric Power Planning & Engineering Institute, Beijing 100120)
  • Received:2014-08-27 Online:2015-02-20 Published:2015-03-13

摘要： 滑坡发生的时间具有明显的周期分布规律特征，日月引力潮是其中重要的影响因素。从固体潮汐理论出发，推导作用于坡体的潮汐应力表达式，阐述了潮汐应力对边坡稳定性的影响。通过考虑潮汐应力作用的改进安全系数法，剖析了潮汐应力触发滑坡的机理。以某典型土坡为例，论述潮汐应力的周期性变化，计算边坡安全系数与并分析其与时间的相关性，结果表明，潮汐应力与边坡安全系数均呈明显日周期及半日周期变动，且安全系数的波动反映该边坡接近临界状态。

关键词: 潮汐应力, 滑坡, 触发, 时间相关性, 边坡安全系数

Abstract: The occurrence time of landslides has a significant periodical distribution and the gravitational tidal forces induced by the sun and the moon are the major contribution factors. This paper presents the formula of the tidal force acting on the landslide as well as the effect of the tidal force on the slope stability from the theory of the solid tide. The triggering mechanism of the tidal force on the landslide is explored throughout the improved factor of safety method that considering the action of tidal force. A slope stability example is considered in the paper to analysis the relationship between the diurnal period relationship and the landslide triggering time. The results indicate that a diurnal and half diurnal periods can be found in the tidal forces and their associated factors of safety.

Key words: Tidal Forces, Landslides, Triggering, Time Related; , Factor of Safety for Slope Stability