Case Study of Scale Model Tests to Examine the Behavior Characteristics of Fault

Jong-Woo Kim

doi:10.7474/TUS.2026.36.3.207

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2026 Vol.36, Issue 3 Next Page

Case Study

Case Study of Scale Model Tests to Examine the Behavior Characteristics of Fault 단층의 거동 특성 검토를 위한 축소모형실험 사례연구

30 June 2026. pp. 207-220

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Abstract

In order to examine the behavioral characteristics of the fault, scaled model tests were performed using a biaxial compression test apparatus with servo control function. Test specimens were made of a mixture of sand, gypsum, cement and water. The behavior and the failure stress conditions of the faults were investigated by conducting an experiment to pressurize and destroy the fault planes under constant constraint load conditions for 19 model specimens. The strike-slip fault models were displaced along a fault plane that existed in the diagonal direction of the test specimens, and the reverse fault models showed the behavior of the hanging wall riding up the foot wall, so that the fault behavior was empirically identified through physical experiments. The model with a rough and interlocked fault plane had a lower breaking load than the model with a flat fault plane. It was confirmed that the crushed crumbs caused by the wear of the irregularities on the interlocked fault plane acted like a fault gouge to reduce shear resistance.

Keywords

Scaled model test

Biaxial compression test apparatus

Strike-slip fault

Reverse fault

Fault gouge

단층의 거동 특성을 검토하기 위하여 모래, 석고, 시멘트, 물의 혼합물로 모형시험체를 제작하고, 서보 제어 기능을 갖춘 이축 압축 시험장치를 사용하여 축소모형실험을 수행하였다. 총 19개의 모형시험체에 대하여 일정한 구속 하중 조건에서 단층면을 가압 파괴하는 실험을 하였고, 단층의 거동과 파괴응력 조건을 알아보았다. 주향이동단층 모형은 시험체의 대각선 방향에 존재하는 단층면을 따라 전단 변형하였고, 역단층 모형은 상반이 하반 위로 타고 오르는 거동을 보여서, 물리적인 실험을 통해 단층 운동을 실증적으로 규명하였다. 거칠고 맞물린 단층면을 가진 모형은 편평한 단층면을 가진 모형보다 파괴하중이 작았고, 시험 전에 서로 맞물렸던 단층면의 요철부가 마모되면서 생긴 파쇄 부스러기는 단층 충전물처럼 거동하여 전단저항을 감소시켰음을 확인하였다.

키워드

축소모형실험

이축 압축 시험장치

주향이동단층

역단층

단층 충전물

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Information

Publisher :Korean Society for Rock Mechanics and Rock Engineering
Publisher(Ko) :한국암반공학회
Journal Title :Tunnel and Underground Space
Journal Title(Ko) :터널과 지하공간
Volume : 36
No :3
Pages :207-220
Received Date : 2026-05-14
Revised Date : 2026-05-27
Accepted Date : 2026-06-01
DOI :https://doi.org/10.7474/TUS.2026.36.3.207

Tunnel and Underground SpaceISSN:1225-1275(Print) 2287-1748(Online)한국암반공학회

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