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2023 Vol.22, Issue 3 Preview Page

Research Article

Analysis of Vibration Velocity Behavior of Rock Slope in Rock Blasting by Three-Dimensional Numerical Analysis

3차원 수치해석을 통한 암반 발파 시 암반 사면의 진동속도 거동 분석

Chang-Young Park1
,
Jae-Young Heo2
,
Yong-Jin Kim3
,
Seung-Joo Lee4
,
Young-Seok Kim5
,
Ji-Hoon Kim6
,
Yong-Seong Kim7*
박 찬영1
,
허 재영2
,
김 용진3
,
이 승주4
,
김 영석5
,
김 지훈6
,
용성 김7*
1Member, Ph.D. Student, Department of Regional Infrastructure Engineering, Kangwon National Univ., 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Republic of Korea
2Member, Ph.D. Candidate, Department of Regional Infrastructure Engineering, Kangwon National Univ., 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Republic of Korea
3Member, CEO, Smart Geotech Co., Ltd, 651-14 Munjeong-Dong, Songpa-Gu, Seoul 05855, Republic of Korea
4Member, Research, Korean Peninsula Infrastructure Special Committee, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Gyeonggi-Do 10223, Republic of Korea
5Member, Senior Research Fellow, Northern Infrastructure Specialized Team, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro, Ilsanseo-Gu, Gyeonggi-Do 10223, Republic of Korea
6Member, Director, Nada Construction Co., Ltd, 542 Eonjo-ro, Gangnam-gu, Seoul 06147, Republic of Korea
7Member, Professor, Department of Regional Infrastructure Engineering, Kangwon National Univ., 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Republic of Korea
*Corresponding Author
30 September 2023. pp. 71-86
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Abstract

Rock blasting tests using underground penetration-type displacement sensors were conducted, and three-dimensional finite element numerical analyses were performed to assess their applicability and mitigate slope hazards during rock blasting. Additionally, parameters influencing vibration velocity were investigated during the tests. The results confirmed that underground penetration-type displacement sensors are suitable for monitoring rock slope behavior, and the numerical analyses revealed that the most influential parameter on vibration velocity during rock blasting is the unit weight. Furthermore, it was observed that vibration velocity decreases significantly with distance from the blast source, and proximity to the source leads to substantial variations in vibration velocity due to differences in elastic modulus and unit weight. Changes in internal friction angle and adhesive strength had minimal impact.

Keywords
Rock blasting
Sensor
Three dimensions numerical analysis
Rock slope

본 연구에서는 암반 발파 시 발생하는 사면 재해를 방지하기위해 지중 관입형 변위센서를 이용한 암반 발파 시험을 수행하고 3차원 유한요소 수치해석을 통해 지중 관입형 변위센서의 적용성 검증 및 암반 발파 시 진동속도에 영향을 미치는 매개변수에 대해 고찰하였다. 암반 발파 시험 결과 지중 관입형 변위센서는 암반사면 거동 계측에 적용 가능한 시스템임을 확인하였으며, 수치해석 결과 암반 발파 시 진동속도에 가장 큰 영향을 미치는 매개변수는 단위중량인 것으로 분석되었다. 또한, 발파원과 멀어질수록 진동속도는 급격하게 줄어들고 발파원과 가까울수록 동탄성계수와 단위중량의 차이에 따라 최대 진동속도 차이는 크게 발생하며 내부마찰각과 점착력 변화에 따른 영향은 거의 없는 것으로 판단된다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 22
  • No :3
  • Pages :71-86
  • Received Date : 2023-08-07
  • Revised Date : 2023-09-11
  • Accepted Date : 2023-09-14
  • DOI :https://doi.org/10.12814/jkgss.2023.22.3.071
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