地学前缘 ›› 2009, Vol. 16 ›› Issue (3): 333-340.

• 论文 • 上一篇    下一篇

地震导致山体变形破裂机制地质力学模拟试验研究

许向宁 王兰生   

  1. 1成都理工大学, 四川 成都 610059
    2四川省地矿局成都水文地质工程地质中心, 四川 成都 610081
  • 出版日期:2009-05-01 发布日期:2009-05-01
  • 作者简介:许向宁(1971—),男,博士,高级工程师,主要从事水文地质与环境地质、边坡及地质灾害整治工程方面的生产科研工作。E-mail: xuxiangning@263.net
  • 基金资助:

    国土资源部科技创新人才工程百名优秀青年科技人才计划项目(国土资发［2007］264号);国家自然科学基金科学部主任基金项目(40342012);教育部高校博士点基金项目(ZS0001);国家重点基础研究发展计划“973”项目(2008CB425801)

Geomechanics modelling test on deformation fracture mechanism of mountain caused by earthquake

  1. 1Chengdu University of Technology, Chengdu 610059,  China
    2Chengdu Center of Hydrogeology and Engineering Geology of Sichuan Provincial Geology and Mineral Resources Bureau, Chengdu 610081, China
  • Online:2009-05-01 Published:2009-05-01

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摘要：

地震导致山体变形破裂是一个复杂的演化过程,文中通过一些典型实例的地质分析,总结归纳了高地震烈度区山体变形破裂失稳有一定代表性的倾外层状体斜坡滑坡型、高陡块(层)状体斜坡崩塌型、软弱基座体斜坡滑坡型等3种典型性地质力学模式。自主创新研制、设计、探索了一套振动条件下地质力学模拟试验的设备模型和方法,并对3种典型性地质力学模型进行机制模拟试验。通过变形破裂演化过程模拟再现试验,从中揭示出一些振动条件下变形破裂的典型迹象和重要证据,充分再现了典型地震失稳机制的形成条件、相关性因素以及演化规律,为进一步研究分析提供科学可靠的试验数据和证据。

关键词: 高地震烈度区;山体变形破裂机制;地质力学模式;振动模拟试验

Abstract:

Abstract:  The deformation fracture of mountains caused by earthquake is a complicated evolved process. In this paper, three typical geomechanics modes are summarized and concluded, i.e. the outerinclining bedded landslide model, the highsteep block (layer) bedded slope collapsing model and the weak base landslide model, which are representative for the deformation fracture and instability of mountains in areas with high earthquake intensity. We have also indigenously developed, designed and explored a set of geomechanics modeling test equipment, models and techniques under vibration to conduct the mechanism modeling test of the three typical geomechanics models, concepts and models. Through the modeling reproduction test of the evolved process of deformation fracture, typical phenomena and important evidence of deformation fracture under vibration are shown and formation conditions, relevant factors and evolvement principles of typical earthquake instability mechanism are presented to offer scientific and reliable test data and evidences for further research and analysis.

Key words: Key words: areas with high earthquake intensity; deformation fracture mechanism of mountain; typical geomechanics model;  modelling test under vibration

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