Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Comparative Analysis between T-4 Drilling and Dual Drilling Methods through Field Measurements

현장계측을 통한 T-4 천공과 암반 이중천공의 비교·분석

  • Received : 2016.05.11
  • Accepted : 2016.07.27
  • Published : 2016.09.01
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Abstract

This study carried out field measurements of rock drilling where two PRD (Percussion Rotary Drilling) methods, T-4 drilling method and dual drilling method, were considered and the study examined the characteristics of vibration level, noise level, drilling speed, and drillig verticality of the two method. The results of field measurements were compared and analyzed in details to provide the drilling information so that the problems due to rock drilling is minimized and the drilling efficiency is improved in the future. The limited measurements in the field indicated that the dual drilling method showed lower vibration and noise levels and better drilling speed and verticality.

본 연구에서는 PRD 방식으로 암반천공을 위해 사용되는 두 공법, 즉 T-4 천공 공법과 암반 이중천공 공법에 대한 현장계측을 실시하고 각 공법의 적용으로부터 발생된 진동, 소음, 천공속도 및 천공수직도를 조사하였으며 그 결과를 비교 및 분석하였다. 이를 바탕으로 두 공법에 관한 관련 계측자료를 제공하고 그 차이점을 파악하여 향후 암반천공으로 인한 주변 민원피해를 최소화하고 천공의 효율을 향상 시키고자 함에 그 목적이 있다. 본 연구에서 제한된 현장계측을 토대로 비교한 결과 암반 이중천공 공법이 T-4 천공 공법에 비해서 진동 및 소음이 보다 작게 발생하는 특징을 나타냈으며 이와 더불어 천공속도와 천공수직도는 더 양호한 특징을 가지는 것으로 나타났다.

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References

  1. Korea Environment Institute (2001), The study on the environmental policy of noise and vibration in 21st century, 317p.
  2. Korea Environment Institute (2007), The study on the improvement of the assessment of noise and vibration for environment disputes at a construction site, 71p.
  3. Korean Society of Professional Engineers for Noise and Vibration (KSPENV) (2001), Report of the examination on noise and vibration of machinery including construction equipment, 334p.
  4. Korea Structural Analysis and Diagnosis Eng. (KOSAD) (2002), Study on vibraion-induced damage assessment of structures, pp. 100-125.
  5. Ministry of Environment (2007), Guidance for noise & vibration control under construction, 279p.
  6. Ministry of Environment (2015), Enforcement decree of the noise and vibration control act, pp. attached table 8.
  7. National Institute of Environmental Research (NIER) (2003), Characteristics of construction machinery noise, 163p.