中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2008, Vol. 27 ›› Issue (3): 416-419.

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高切坡失稳动力机理研究

曹卫文, 陈洪凯, 叶四桥   

  1. 重庆交通大学 岩土工程研究所, 重庆 400074
  • 收稿日期:2007-05-17 修回日期:2007-06-06 出版日期:2008-06-20 发布日期:2016-11-14
  • 作者简介:曹卫文(1980-),男,湖南湘潭人,硕士研究生,主要从事边坡工程研究。E-mail:caoweiwen980241@sohu.com。
  • 基金资助:
    国家自然科学基金(50678182)

Study on Dynamic Mechanism of High-Cutting Slope Deformation

CAO Wei-wen, CHEN Hong-kai, YE Si-qiao   

  1. Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2007-05-17 Revised:2007-06-06 Online:2008-06-20 Published:2016-11-14

摘要: 工程开挖形成的高切坡,由于卸荷作用,往往会出现卸荷裂缝,潜滑体在重力作用下会向下蠕动,致使其中部固锁段受到挤压而储存了弹性应变能,当固锁段存储的剪切应变能达到岩体的抗剪强度时,滑体就会失稳运动。运用能量守恒定律及动力学有关理论得出了滑体的启程速度、滑动速度和滑行距离方程。以2001年5月1日发生在重庆武隆的高切坡失稳为例进行了验证,并得到了好的成效,为确定滑体的致灾能力及致灾范围提供了依据,有利于更好地防灾减灾。

关键词: 高切坡, 失稳, 动力机理, 滑行距离

Abstract: High-cutting slope formed in the excavation of the profect,as to uploading effects,will appear uploading fissure easily.Latent slide will get down and creep ander the action of gravity,which causes some of the firm segment pressed to store elastic strain energy.As the firm segment store shear stress reaching the shear strength of rock mass,slide will have deformation movement.Some correlation theory of the low of conversation and the dynamics are used to obtain the slide's motivating velocity,sliding velocity and sliding distance equation.The example that deformation of high-cutting slope took place in Wulong Chongqing on May 1st,2001 is tested by this method and does well.Evidence is offered to confirm the capability and scope of leading to disastrous of slide,which is in faver of better prevention or reduction against the disaster.

Key words: high-cutting slope, deformation, dynamic mechanism, sliding distance

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