Strength behaviour of a model rock intersected by non-persistent joint

查看全文 作　　者：Divya [1]Shaunik;Mahendra [1]Singh

机构地区：[1]Department of Civil Engineering,Indian Institute of Technology Roorkee

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》索引2019年第11卷第6期,共13页

摘　　要：Several constructions in the field of civil engineering quite often need to deal with rocks.Strength behaviour of rock intersected by a discontinuity or a set of discontinuities has been a topic of keen interest for engineering community.The popular attributes of discontinuities that have been given due importance are their frequency,orientation and surface characteristics.Non-persistency,however,has been given little attention.This article presents an experimental study wherein focus has been made on the effect of non-persistency of the joint on the uniaxial compressive strength(UCS)of a model rock for various geometries such as orientation,discontinuity length ratio and number of joint segments.The applicability of single plane of weakness theory(SPWT)to assess the strength of jointed specimens has also been evaluated.It has been noticed that SPWT captures the strength behaviour only for a narrow range of discontinuity orientations.As an improvement,an approach is suggested by extending concepts of degree of persistence and joint factor to have a better understanding towards strength behaviour of rocks intersected by non-persistent joints. 关键词：Uniaxial compressive STRENGTH (UCS) JOINT segment Non-persistency JOINT factor

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Strength behaviour of a model rock intersected by non-persistent joint

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