• 화약ㆍ발파
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• 제22권3호
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• pp.35-41
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• 2004

국내에는 좁은 국토면적에 많은 주택 또는 건축물을 보급하기 위해 새로운 부지조성을 위한 공사가 도심에서 근접하여 이루어지고 있다. 이 새로운 부지조성을 위해 인근 건축물과 아주 근접하여 시공하는 경우가 많아지고 있으나, 이에 타공법보다 경제적으로 암반을 파쇄하기 위하여 발파작업을 선호하고 있는 실정이나, 도심지에서 발파작업으로 인해 진동 및 폭음 등으로 주변 보안물건에 피해가 발생하였다고 민원을 제기하는 경우가 많이 발생한다. 따라서 본 연구는 ${\bigcirc }{\bigcirc}$지역의 "양산 물금지구 택지조성을 위한 토취장의 발파지점에서 450 - 800M 부근에 위치한 저층건축물(${\bigcirc}{\bigcirc}$빌라 4층)에 1층과 4층에 진동과 폭음을 동시에 계측하여 발파작업으로 인한 진동 및 폭음이 저층건축물(${\bigcirc}{\bigcirc}$빌라)의 층별로 미치는 영향을 검토하였다. 과거 발파 영향권을 분석한 결과 고층아파트는 고층으로 진동이 이동하여 감소현상을 보였으나 본 연구에서 저층 건축물(${\bigcirc}{\bigcirc}$빌라)은 저층보다 윗층(4층)의 경우가 많은 진동크기를 나타내었으며 향후 발파작업시 고층아파트보다 저층건축물이 존재 할 경우 보다 발파작업에 주의하여야 할 것으로 나타났다.

• 기술사
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• 제16권3호
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• pp.41-53
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• 1983

The Dangri Crushed Stone Quarry is located in Dangridong, Busan City, and around the estuary of the Nagdong River. The quarry is considered to be a very promised one in the urban area from the standpoints of the assessment of the aggregate rank, the environmental impacts and the transportation distance. The crushed stones for aggregate of the quarry marks the higher rank in the gravity, the absorption ratio, the abrasion ratio, and the stability in comparison with the JISA 5005. The basement vibrations of the residential section in the vicinity of the quarry, which are arised by the millisecond blasting at the quarry site using the gelatin dynamites less than 39kg in weight, are measured to assess the vibration nuisance. The values of acceleration and the magnitudes are less than eight gals and O on the Richter scale respectively, the vibration nuisance thus can be ignored in such scales of the experiments. The traffic vibrations of the residential section are slightly susceptible. In the experiments, the traffic vibrations appears to be sensibler to the basement than the explosion vibration. The explosion noises in the experiments are not checked not only on the RION Sound Level Meter but also to our ears. The values of traffic noises also are in the safety values of the noise nuisance. The crush dust suspends in the air toward the upper valley in the opposite side of the residential area because of the influences of the sea breeze and the valley wind in the daytime, and the monsoon and the topographic disposition. the dust nuisance thus would not be remained in problem. The quarry is operated in the daytime only. The traffic dust in the residential area will be reduced by the faultless pavement and the careful driving. The elaborate survey on the ridges and peaks surrounded the quarry is recommended to prevent in advance the accidents of the rock slide. Moreover, it is required to make an advisory committee to develop the industry and to save the techniques. The most important matter is the accomodation between the attitude of the enterprising man for the social responsibility to the public nuisance and the cooperative spirit of the inhabitants for the industry.