Study on Deformation Characteristics and Dynamic Mechanism of Shattered Mountain Fractures in Wenchuan Earthquake

袁进科; 裴向军

doi:10.13409/j.cnki.jdpme.2015.06.022

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Study on Deformation Characteristics and Dynamic Mechanism of Shattered Mountain Fractures in Wenchuan Earthquake

更新时间：2025-12-11

- Study on Deformation Characteristics and Dynamic Mechanism of Shattered Mountain Fractures in Wenchuan Earthquake
- Vol. 35, Issue 6, Pages: 848-855(2015)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2015.06.022
  CLC： 315;P642.27
- Published：2015
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[1]袁进科,裴向军.汶川地震震裂山体裂缝变形特征与动力机制研究[J].防灾减灾工程学报,2015,35(06):848-855.

袁进科, 裴向军. Study on Deformation Characteristics and Dynamic Mechanism of Shattered Mountain Fractures in Wenchuan Earthquake[J]. 2015, 35(6): 848-855.
[1]袁进科,裴向军.汶川地震震裂山体裂缝变形特征与动力机制研究[J].防灾减灾工程学报,2015,35(06):848-855. DOI： 10.13409/j.cnki.jdpme.2015.06.022.

袁进科, 裴向军. Study on Deformation Characteristics and Dynamic Mechanism of Shattered Mountain Fractures in Wenchuan Earthquake[J]. 2015, 35(6): 848-855. DOI： 10.13409/j.cnki.jdpme.2015.06.022.

摘要

介绍了地震裂缝的类别、基本特征、分布规律

从发育规模和失稳机制对各类地震裂缝的特点和破坏特征进行了理论分析

探讨了地震裂缝的展布、发育特征、变形迹象

并利用岩石断裂力学机理

结合应力强度因子方法分析结构面的震裂损伤机制。研究结果表明:1根据斜坡地震裂缝的形态特征和变形迹象分为表面型、贯穿型、走向型、倾向型、闭合型、扩展型6种基本类型;2斜坡上地震裂缝总体走向在N30°60°E;3地震裂缝主要分布在发震断层附近或者山脊位置以及斜坡陡缓交界部位

裂缝延伸性好、张开程度高

充填较少或者无充填;4地震裂缝力学机制主要属于拉张裂缝

岩体结构面在动力作用下的变形破坏过程分为破裂、扩展、贯通3个阶段。

Abstract

The categories

basic characteristics and distribution law of seismic fracture were introduced

theoretical analysis study on the features and failure characteristics of various types of seismic fractures was conducted from their development scale and instability mechanism

the distribution

development characteristics

deformation signs of seismic fractures were explored and combined with the stress intensity factor method

the shattering injury mechanisms of structure surface was analyzed by use of rock fracture mechanics mechanism.The research results show:（1）The seismic fractures are divided into six types:surface type

transfixing type

strike type

tendency type

closure type and extension type from its morphological characteristics and deformation signs;（2）On the whole the Seismic fractures has 30°N-60°E trend;（3）The seismic fractures mainly distributed in seismogenic faults area or ridge and steep with slow border area

high open degree

fillings less or no.（4）The mechanism of seismic fractures belongs to tensile crack

the deformation and failure process of structural planes of rock mass under dynamic action is divided into rupture

expansion and penetration three stages.

关键词

Keywords

references

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强震区岩体地震动力破坏特征 [J]. 梁庆国,韩文峰. 西北地震学报 . 2009(01)

地震载荷作用下的节理岩体破裂模型 [J]. 张振南,葛修润. 岩石力学与工程学报 . 2005(10)

岩体地震动力破坏问题研究 [J]. 梁庆国,韩文峰,谌文武,王生新. 岩石力学与工程学报 . 2003(S2)

张北6.2级地震地裂缝特征及其研究意义 [J]. 蔡华昌,张景余,刘荣利,刁桂苓,黄万发,张启富,彭远黔,杨家亮,刁建新. 华北地震科学 . 2001(04)

岩石断裂力学导论[M]. 中国科学技术大学出版社 , 李世愚, 2009

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