防灾减灾工程学报2016，Vol.36Issue(4)：595-600,6.DOI:10.13409/j.cnki.jdpme.2016.04.013
地震边坡超低摩擦效应启滑机理分析
Analysis of Open-slip with Anomalously Low Friction Effect of Slope under Earthquake
摘要
Abstract
In order to investigate the anomalously low friction effect and the mechanism of opening slide of slope with structural plane under earthquake,the slope with single structural plane was simplified to equivalent mass-viscoelasticity model.Combined theoretical analysis with numerical simulation,the normal stress state of structure plane and the relative normal velocity and normal displacement of fundamental rock and landslide was taken as a research object,the evolution law of normal stress state of structural plane and the relative normal velocity and displacement between fundamental rock and landslide under seismic load were obtained.The essence of anomalously low friction effect in the system of slope including single structural plane was revealed.The results of theoretical analysis and numerical simulation show that the fluctuation of the seismic load leads to the negative and positive alternating of relative normal displacement between fundamental rock and landslide,the increase and decrease of normal dynamic stress occur alternately,when the normal dynamic stress is positive and the anomalous low friction phenomenon occurs in the dynamic system,and the slope will deform with progressive failure.关键词
地震载荷/含结构面边坡/超低摩擦效应/FLAC3D模拟/累进性破坏Key words
seismic load/slope with structural plane/anomalously low friction effect/FLAC3D simulation/progressive failure分类
天文与地球科学引用本文复制引用
王来贵,习彦会,周向,潘纪伟,杨建林..地震边坡超低摩擦效应启滑机理分析[J].防灾减灾工程学报,2016,36(4):595-600,6.基金项目
国家自然科学基金面上项目(51274110)、国家自然科学基金青年基金项目(51304108)、国家自然基金煤炭联合基金重点项目(U1361211)资助 （51274110）
