工程地质学报Issue(2)：227-232,6.DOI:10.13544/j.cnki.jeg.2015.02.006
岩脉多次侵入条件下斜坡变形破坏模式及稳定性分析
DEFORMATION AND FAILURE MODE AND STABILITY ANALYSIS OF THE SLOPE UNDER MULTI-STAGE DIKE INTRUSIONS
摘要
Abstract
Multi-stage intrusions of dikes can change the rock and slope structures greatly,and further change the deformation and failure mode and the stability of the slope.This paper examines the Gaxiapa slope in the dam area of the Lenggu waterpower station at the midstream of the Yalongjiang River as a case study.Before dike intrusions, Gaxiapa slope was a stable slope with thin-middle layer sandstone.The bedding dip direction is opposite to the slope dip direction.After intrusions,the slope constitutes interbedded sandstone and granite dike.The rock was cracked by crushing of the dikes.The original deformation mode“bending-dumping”changes into“outburst of retaining wall”.The comparatively intact sandstone in the middle became the retaining wall,which blocks the sliding of the cracked rock at the back,together with the front dike.However,the front dike is deforming severely and in a critical steady state now.If the front dike fails,the Gaxiapa slope is likely to slide down entirely.The result of the failure mode analysis is validated using 3DEC numerical simulation software.The conclusions of the study can be of some value for the similar study,and provide the theoretical support for the stability analysis and prevention of the landslide with the similar structures.关键词
雅砻江/岩质斜坡/岩脉侵入/变形破坏模式/3DEC/稳定性分析Key words
Yalongjiang River/Rock slope/Dike intrusion/Deformation and failure mode/3DEC/Stability analysis分类
天文与地球科学引用本文复制引用
张玉明,张明,胡新丽,谭福林,祝廷尉,徐聪..岩脉多次侵入条件下斜坡变形破坏模式及稳定性分析[J].工程地质学报,2015,(2):227-232,6.基金项目
国家自然基金项目（No．41202200，41472264），国家重点基础研究发展计划（973计划）项目（2011 CB710604），中国地质大学（武汉）中央高校基本科研业务费专项资金项目（No．CUGL140409）资助． （）
