Simplified Estimation of the Cohesion and Internal Friction Angle of Volcanic Intact Rocks in Jeju Island Using Uniaxial Compressive Strength and/or Brazilian Tensile Strength

Soonbo Yang

doi:10.7843/kgs.2022.38.10.5

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2022 Vol.38, Issue 10 Next Page

Simplified Estimation of the Cohesion and Internal Friction Angle of Volcanic Intact Rocks in Jeju Island Using Uniaxial Compressive Strength and/or Brazilian Tensile Strength 일축압축강도·압열인장강도를 이용한 제주도 화산암의 점착력과 내부마찰각의 간이추정

31 October 2022. pp. 5-15

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Abstract

In this study, to propose simplified methods for estimating the cohesion and internal friction angle of volcanic rocks in Jeju Island using uniaxial compressive strength and/or Brazilian tensile strength, the estimated values of cohesion and internal friction angle from triaxial and uniaxial compression tests and Brazilian tests were compared in terms of estimation accuracy. This study proposed simplified methods for estimating the cohesion and internal friction angle using the uniaxial compressive strength and/or Brazilian tensile strength of volcanic rocks in Jeju Island. According to the findings, among the proposed simplified methods, the method using uniaxil compressive strength was most desirable to accurately estimate the cohesion and internal friction angle of volcanic intact rocks in Jeju Island.

Keywords

Brazilian tensile strength

Cohesion

Internal friction angle

Jeju Island

Uniaxial compressive strength

Volcanic rocks

본 연구에서는, 제주도 화산암의 일축압축강도·압열인장강도를 이용하여 점착력과 내부마찰각을 간편하게 추정하기 위한 방법을 제안하기 위하여, 제주도 화산암석에 대한 삼축압축시험, 일축압축시험 및 압열인장시험의 결과로부터 각각 산정된 점착력 및 내부마찰각을 서로 비교·분석하였으며, 퍼센트 오차 평균값을 이용하여 그 추정 정도를 살펴보았다. 그 결과, 제주도 화산암의 일축압축강도·압열인장강도를 이용한 점착력과 내부마찰각의 다양한 간이 추정법을 제안할 수 있었으며, 제안된 방법 중에서 삼축압축시험 결과로부터 산정된 점착력 및 내부마찰각에 가까운, 다시 말해서 정도가 높은 값을 추정하기 위해서는, 일축압축강도를 이용하여 추정하는 방법이 가장 바람직하다는 것을 알 수 있었다.

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Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 38
No :10
Pages :5-15
Received Date : 2022-04-07
Revised Date : 2022-08-05
Accepted Date : 2022-08-11
DOI :https://doi.org/10.7843/kgs.2022.38.10.5

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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