[논문]산업시설 근접발파 시 발파진동 영향 분석 및 평가

곽창원; 박인준; 김영준

doi:10.12652/ksce.2023.43.4.0459

산업시설 근접발파 시 발파진동 영향 분석 및 평가
Analysis and Evaluation of the Effect of Blast-induced Vibration Adjacent to Industrial Facilities 원문보기

KSCE Journal of Civil and Environmental Engineering Research = 대한토목학회논문집, v.43 no.4, 2023년, pp.459 - 468

곽창원 (인하공업전문대학 건설환경공학과) , 박인준 (한서대학교 인프라시스템학과) , 김영준 (한서대학교 인프라시스템학과)

초록
AI-Helper

발전소와 같은 산업시설은 국가 기간산업으로서 재해 발생 시 막대한 물적, 인적 피해가 발생하며 사회경제적 파급효과가 지대하다. 본 연구에서는 상업운전 중인 ○○발전소 부지 하부로 철도터널이 발파굴착될 때 발파진동의 특성과 영향을 평가하였다. 이를 위하여 진동 예민 구조물과 근접하여 발파한 기존 사례를 검토하고 발전소 근접 발파 시 합리적인 발파진동 허용 기준을 결정하였다. 발전소 내 주요 시설물들에 대한 발파진동 영향은 3차원 유한요소해석법에 의한 동적수치해석을 이용하여 발파하중 재하 시의 입자진동속도를 분석하고, 탁월주파수 산정을 통한 공진검토를 수행하였다. 해석결과 발파원과 가장 인접한 펌프기초에서 진동속도가 허용기준치에 근접하여 일부 발파패턴을 수정 후 계측하여 허용치 이내임을 확인함으로서 산업시설 근접발파 시 안정성을 확보할 수 있는 진동영향평가의 합리적인 의사결정과정을 확립하였다.

Abstract ▼ AI-Helper

Power plant is a kind of basic industrial facility and might cause fatal industrial and human damage. In this study, the characteristics and effect of blast-induced vibration for tunnelling which underpass ○○ power plant in operation were evaluated. Previous blasting cases adjacent to industrial facilities were intensively reviewed, then allowable vibration criteria were suggested. 3 dimensional dynamic numerical analysis based on finite element method was performed to investigate particle velocity and resonance was examined by calculating the predominant frequencies. As a result, particle velocity at pump foundation which is nearest to the source was approached to the allowable criteria, therefore, the modified blasting pattern was newly suggested and confirmed the attenuation effect based on the test blasting. Consequently, appropriated decision-support procedure was established in case of adjacent blasting to industrial facilities.

주제어

표/그림 (17)

그림 Fig. 1. Comparison of Blast-Induced Vibration-Time Histories (Modified after Kim et al., 2013b): (a) Using Electronic Detonators, (b) Using Non-electronic Detonators
표 Table 1. Regulatory Standards for Daily Vibration by Noise Vibration Control Act
표 Table 2. Case Study of Blasting Adjacent to Existing Plant and Susceptible Facilities
표 Table 3. Guidelines of Allowable Vibration Criteria
표 Table 4. Allowable Blast Vibration by Announcement of Ministry of Employment and Labor
표 Table 5. Vibration Criteria (ISO 10816-1)
그림 Fig. 2. Predominant Frequencies of Vibraions (Modified after Siskind et al., 1980): (a) Coal Mine Blasting, (b) Quarry Blasting, (c) Construction Blasting
그림 Fig. 3. Time History of Estimated Blasting Pressure
표 Table 6. Input Parameters for Estimation of Blasting Pressure
표 Table 7. Geotechnical Properties
표 Table 8. Numerical Analysis Conditions
그림 Fig. 4. Analysis Result of Particle Velocity: (a) FEM Modeling, (b) Model Dimension, (c) Soil Profile, (d) Particle Velocity Contour, (e) Particle Velocity-Time History (Pump), (f) Particle Velocity-Time History (Turbine)
표 Table 9. Resonance Check Result
그림 Fig. 5. Analysis Result of Resonance Check: (a) FEM Modeling (Midas/GEN), (b) Fast Fourier Transform of Acceleration
그림 Fig. 6. Modification of Blast Pattern: (a) Before Modification, (b) After Modification
그림 Fig. 7. Test Blasting and Measurement: (a) Measurement on Ground Surface, (b) Changing of Explosive
표 Table 10. Specification of Test Basting

참고문헌 (23)

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상세보기
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원문보기 상세보기
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상세보기
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상세보기
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용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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