硬质岩边坡“坠覆”变形机理探讨

英文篇名：Discussion on down-slope overlapping deformation of hard rock slope
中文刊名：水利水电科技进展
英文刊名：Advances in Science and Technology of Water Resources
作者：朱红雷
英文作者：ZHU Hong-lei(Zhejiang Design Institute of Water Conservancy and Hydro-electric Power ; Hangzhou 310002 ; China)
中文关键词：硬质岩边坡 ; 裂隙岩体 ; 斜坡变形 ; 岩层坠溃 ; 坠覆体
英文关键词：hard rock slope ; fissured rock ; slope deformation ; rock collapse ; down-slope overlapping
出版日期：2007-10-20
机构：浙江省水利水电勘测设计院浙江杭州310002
年：2007
期：05
出版单位：水利水电科技进展

摘要

介绍发现于三叠系中统巴东组(T2b)软弱碎屑岩地层之中、人们在三峡库区库岸稳定研究过程中所提出的斜坡变形破坏形式——"坠覆体"——的概念。通过对浙江省中部某近坝库岸的大范围堆积体进行初步研究,结果表明,裂隙发育的硬质岩高陡边坡,由于受卸荷松动和风化作用的综合影响,也会产生"坠覆体"堆积。探讨该"坠覆体"堆积的形成机理。对软、硬岩层的坠溃变形情况进行了对比和分析。
Down-slope overlapping,which was found in weak clastic rocks of middle triassic Badong group(T2b),is a slope deformation failure form proposed during the stability study of the reservoir bank of the Three Gorges Project.The analysis of an old landslide near a reservoir dam in the middle Zhejiang Province shows that the down-slope overlapping accumulation may occur on high hard rock steep slope with fissure development due to the unloading relaxing and weathering.Moreover,the mechanism of down-slope overlapping accumulation was discussed,and the collapse-induced deformation of soft and hard rocks was compared and analyzed.

引文

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