• Journal of the Korean Recycled Construction Resources Institute
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• v.11 no.3
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• pp.251-259
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• 2023

In this study, as a foundational research aimed at promoting the efficient recycling and environmentally friendly disposal of construction waste through the activation of a selective dismantling system, our primary objective was to analyze the economic feasibility of implementing selective dismantling. To achieve this, we conducted an assessment on a 5-story residential building with a construction area of 2,400 m² as a case study. When considering the additional cost of dismantling construction ① the reduction in waste disposal costs due to decreased mixed waste, ② and the potential revenue from recycling through the separation and sorting of waste materials, and ③ we were able to comprehensively confirm that there is an expected cost-saving effect totaling 34,727,000 KRW when compared to conventional demolition methods.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.10a
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• pp.824-827
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• 2005

This paper represents a study on disassembly sequence generation for automobile parts. This is particularly useful because adequate end-of-life disassembly becomes crucial as take-back obligations are imposed for environmental reasons. Therefore in this paper a method is suggested to automatically derive all the feasible subassemblies and feasible actions between them from the assembly modeling files. As a result, in consideration of the all pars and subassemblies the optimum disassembly sequence is generated. And the optimum disassembly sequence for a certain part or subassembly can be also generated.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2023.11a
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• pp.87-88
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• 2023

서해안 최고의 동백정해수욕장과 마량리 동백나무숲은 1970년대 오일쇼크 이후 에너지 자립을 위해 발전소를 건설하면서 사라졌다. 그 당시 준공된 화력발전소는 전력공급 이라는 소임을 완수하고 2021년 부터 동백정의 아름다운 옛 모습 그대로 지역주민에게 돌려 주기위한 친환경 사업으로 발전소 철거공사를 시작, 동백정 복원공사를 추진 하기로 했다. 고층 및 중량물의 건축물 및 구조물을 안전하게 해체하기 위해서는 국내 최초 발전소 철골구조물에 대한 발파·전도공법을 채택 하였다. 철거작업은 고위험 공종으로 참여 주체인 발주자, 설계자, 감리자, 시공자 및 근로자 전 계층의 참여로 사전 위험성평가를 통해 근원의 위험요인 발굴 및 안전대책 수립, 수립된 안전대책 100% 이행을 통해 무재해 준공 달성 하기를 기대한다.

• Explosives and Blasting
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• v.28 no.2
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• pp.76-85
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• 2010

In this paper, we present the result of an analytical investigation concerning the demolition range for the pre-weakening of load-bearing wall in explosive demolition. Pre-weakening of load-bearing wall is usually conducted based on field experience because reliable specifications or guidelines for the design of pre-weakening have not yet been established in Korea. This study is one of the efforts to develop such a reliable specification or guideline for the pre-weakening process. Hence, the focus of the study is on the estimation of pre-weakening range of load-bearing wall. For the purpose, a finite element analysis (FE analysis) was conducted, and a pre-weakening range of load-bearing wall was suggested based on the analysis result.

• Explosives and Blasting
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• v.39 no.4
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• pp.1-11
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• 2021

In this study, the vibration data were obtained to analyze the vibration generated during dismantling of slab using the mechanical dismantling method. The obtained vibration data were classified according to the attachment device and then the waveform and dominant frequency analysis were performed. And the correlation was analyzed by the different methods of measuring the distance between the work section and the measurement point. As a result of the waveform analysis for each attachment device, there was little change in the phase of the vibration waveform and only the change in amplitude, which is the magnitude of the vibration velocity. And as a result of frequency analysis, the frequency band was lower when using a crusher method than a braker method and frequency band were close of the natural frequency of the structure to be dismantled. As a result of the correlation analysis, the separation distance was estimated a higher correlation when evaluated as the path through which the vibration propagates along the structure frame than the straight distance between the measurement point and the working section.

• Electric Engineers Magazine
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• s.356
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• pp.46-47
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• 2012

2012년 2월 10일(금) 15:20경, A건설의 인천광역시 중구 소재 공장 증축 및 리모델링 공사현장에서 협력업체 소속 근로자가 인근 전주(높이 12m)의 인입선 지지용 애자에 연결된 점퍼선을 해체하던 중, COS 1차측(특고압 22.9kV)에 접촉되어 감전 사망한 재해임.

• Electric Engineers Magazine
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• s.358
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• pp.44-45
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• 2012

2012년 03월 16일(금) 11:05경, 경기도 고양시 소재 ${\bigcirc}{\bigcirc}$물재생센터의 발전기(3기)를 교체하기 위하여 발전기 및 관련 설비를 해체하는 과정에서 가스 압축기실 내에 있던 누출된 메탄가스가 배관 등의 용단작업 중에 발생된 불꽃에 의해 점화 폭발로 1명 사망, 6명이 부상당한 재해임.

• Proceedings of KOSOMES biannual meeting
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• 2018.06a
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• pp.60-60
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• 2018

• 건강소식
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• v.25 no.4 s.269
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• pp.6-13
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• 2001

자살은 인류 역사의 시작과 함께 시작되어 시대의 변화나 문화의 차이에도 불구하고, 인류와 함께 있어 왔다. 우리나라는 최근 급속한 자살 사망률의 증가로 인해 자살이 심각한 보건학적, 사회적 문제가 되고 있다. 특히 IMF 경제위기를 겪으면서 실업, 빈곤화, 가족해체 등은 IMF경제위기 이전보다 자살사망률이 급증하는 결과를 초래하였다. 또한 기존의 가족이나 사회문제, 교육문제 등으로 인해 취약한 정신건강상태로 인해 자살욕구에 대한 전염력이 강한 청소년과 젊은 청년층에게 ‘자살 사이트’라는 인터넷 매체로의 접근은 자살이라는 전염병의 새로운 감염경로가 되고 있다. 이것은 국민들의 정신건강 상태가 위험수위에 이르고 있음을 나타낸다. 온전한 정신 건강은 육체적 건강을 위한 필수조건일 뿐만 아니라 활기찬 생활의 바탕이 된다.

• Explosives and Blasting
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• v.29 no.2
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• pp.1-12
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• 2011

Progressive collapse analyses of high-rise buildings subjected to abnormal loading such as fires, impacts, earthquakes, typhoon, bomb blasts etc. are intended. However it is difficult to perform collapse experiments of the real scale building to determine the capacity of the structure under an extreme loading events. In this study, collapse behavior of a 15 story RC structure building loaded by external explosion pressures were simulated using Extreme Loading Structures (ELS) software. The standoff distance between the RC building and explosives of 1500 kg was 1, 2, 5, 10, and 15 meters. The explosive demolition analysis techniques based on removal of partial support structures following blast scenario was adapted to investigate the transition process of progressive collapse-local damage.