• Explosives and Blasting
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• v.21 no.3
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• pp.37-48
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• 2003

김해 국제공항 2단계 확장 공사 중 구 국제선 청사 발파해체공사"는 5.5초의 기폭시차를 두고 약 7초간에 구조물의 붕괴를 유도하여, 단기간에 안전하며 최대의 효율을 낼 수 있는 발파해체공법을 적용하여 시공하였다. 이에 따라 발파해체공사의 공법, 공정, 세부 현황 및 결과, 발파공해영향권에 대해 분석, 평가 하였다. 구 국제선청사 구조물은 3층 높이로 저층 구조물에 해당하고 구조물의 특성상 Span 간격이 길고 충고가 높다. 또한 지반이 액상한계점 상태까지 도달하여 구조안전진단 결과 위험등급인 D등급으로 판정되었다. 본 대상건물과 같이 충고는 낮지만, 구조 안전성 측면에서 위험 요소를 가지고 있으므로 발파공법을 적용하여 해체를 실시하였다.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2015.10a
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• pp.133-134
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• 2015

전처리 공정장치 구축에 앞서 정확한 설계와 검증이 선행되어야 한다. 우선 디지털 목업 기술을 통해 설계검증을 철저히 함으로써 공정의 품질을 높이고 공정하자를 최소화 할 수 있다. 전처리 공정 중 집합체해체 핵심장치의 유지보수를 쉽게 하고, 원격 제어 효율을 높이기 위한 모듈화와 그에 대한 사전 검증을 수행하였다. 이를 위해해 전처리 디지털 목업 시스템 검증 대상과 집합체 해체핵심장치 주요모듈을 선정하였으며, 주요 모듈의 모듈화 방안 과 모듈 탈착 시간 검증하였다. 그 결과, 집합체해체 핵심장치에서는 5개의 주요 모듈로 구성되었으며, 모듈 탈착 시간 검증에서 작업시간은 클램프모듈이 약 130초, 언볼팅, 드릴링 모듈이 140초 소요될 것으로 분석되었다. 향후 전처리장치별 모듈 분석과 LAYOUT 운영을 포함해서 MSM 시뮬레이터의 디바이스 및 시뮬레이터 시스템 구축을 수행할 것이다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.2D
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• pp.143-151
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• 2010

Currently, one of the most interested things at home and abroad country will be an eco-friendly construction. Among these, one of the most important elements will be the recycle and reuse of construction and demolition waste. Because construction waste is generated the most at the demolition phase, it is important to minimize the quantity of the demolition waste at the phase. And it is also important to develop a system to manage rightly the generated demolition waste. But in the domestic country, a research for this has hardly been carried out. In recent, the government has realized its importance and is making a research to improve demolition technique and is preparing a research to make a raw for deconstruction. Therefore, this study examined its application situation and importance by analyzing the trend of demolition technique used in the domestic industry. Also this study carried out a survey for situation analysis of the demolition industry. This study suggested items needed for the development of demolition technique, demolition design and reduction of C&D waste through a survey results and a situation analysis.

• Proceedings of the KSME Conference
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• 2005.11a
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• pp.226.1-226.1
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• 2005

• Journal of the Korean Society of Systems Engineering
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• v.17 no.1
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• pp.76-84
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• 2021

Radioactive waste generated from nuclear power plant decommissioning shall be strictly managed so that radioactive materials above the allowable limit are not leaked into the environment. Radioactive wastes shall be classified and treated for management based on characteristics such as the type of waste, physicochemical properties, nuclide concentration and radioactivity. Waste characterization report shall be prepared and submitted to the disposal facility operator to ensure that the treated waste is suitable for disposal. The disposal facility operator shall review the waste Characterization report and visit the nuclear power plant decommissioning site to ensure that the wastes are processed step by step according to the plan. The waste Characterization report may be used as input data to evaluate disposal facility safety. Domestic and foreign data are collected and reviewed to confirm the entire processes from waste generation to delivery. This paper proposes the method to prepare the waste Characterization report which contains data and information on waste characteristics, treatment facilities & method and packaging method & container.

• Magazine of the Korea Concrete Institute
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• v.14 no.5
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• pp.15-20
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• 2002

갱폼이라 함은 주로 고층 아파트에서와 같이 평면상 상ㆍ하부 동일 단면 구조물에서 외부벽체 거푸집과 거푸집 설치ㆍ해체작업 및 미장ㆍ치장(견출) 작업발판용 케이지(cage)를 일체로 제작하여 사용하는 대형 거푸집을 말한다. 여기서 케이지는 갱폼에서 외부벽체 거푸집 부분을 제외한 부분으로 거푸집 설치ㆍ해체작업, 후속 미장, 치장(견출) 등 작업을 안전하게 수행하는데 필요한 작업발판, 안전난간 등으로 구성되어 갱폼 거푸집에 결합된 부분이며, 상부 케이지는 갱품 케이지의 4단 작업발판 중 거푸집 설치ㆍ해체작업용으로 사용되는 상부 2단 작업발판 구성 부분이고, 하부 케이지는 미장ㆍ치장(견출) 작업용으로 사용되는 하부 2단 작업발판 구성 부분을 말한다.(중략)

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.209-209
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• 2004

자동차 폐차대수의 증가에 따른 폐차처리가 심각한 환경 유해 요인이 되고 있다. 국내 자동차 보유대수가 2003년 12월 현재 1,458만대에 이르렀고, 2003년 한해에 폐차되는 폐차대수는 55만대에 이르고 있어, 향후 몇 년 안에 매립지 부족, 환경위해 등의 문제가 심각하게 대두될 전망이다. 또한 EU에서는 2015년까지 재활용 95％를 목표로 단계적인 법제화를 실시하고 있으며 이러한 추세는 전 세계적으로 확산될 것으로 보여 이에 대한 대응이 필요하다.(중략)

• Korean Journal of Cognitive Science
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• v.19 no.3
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• pp.283-295
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• 2008

With increasing usages of a messenger and a SMS, many young people are habitually using a new-style of sentences with intentionally disjoint Korean syllables. To develop a natural language interface system in these environments, we should first develop a technique that converts a sequence of disjoint Korean syllables to a correct sentence. Therefore, we propose a method to assemble a sequence of disjoint Korean syllables into a correct sentence by using two-step rules. In the first step, the proposed method assembles CVC (consonant-vowel-consonant) forms of simple-disjoint Korean syllables by using manual heuristic rules. In the second step, the proposed method assembles CCVCC forms of double-disjoint Korean syllables by using a mapping table and a transformation-based learning technique. In the experiment, the proposed method showed the perfect precision of 100% in assembling simple-disjoint Korean syllables and the high precision of 99.98% in assembling double-disjoint Korean syllables.

• Explosives and Blasting
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• v.21 no.3
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• pp.49-60
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• 2003

Nowadays it is tendency to make a remodelling or demolition of old structures with the rapid development of blasting technique. In this treatise it is arranged of improvement procedure of blasting demolition method in korea which was begun since August 1991. Recently, the blasting demolition method has much merits with 60-70% reduction effect of construction period than mechanical demolition method. and so that it has much economical points specially over than 5 storied high buildings. In order to maximalize economical effects of the blasting demolition method, environment safety and recycling, it must be needed. at first to develop the estimating programs against vibration, noise, flying stones, and dust. Also it is required to take a responsibility for using recycling materials after blasting demolition of old structures, and to be invested to advance the blasting demolition techniques.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.17 no.2
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• pp.139-165
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• 2019

The current status and prospect of decommissioning technology development at KAERI are reviewed here. Specifically, this review focuses on four key technologies: decontamination, remote dismantling, decommissioning waste treatments, and site remediation. The decontamination technologies described are component decontamination and system decontamination. A cutting method and a remote handling method together with a decommissioning simulation are described as remote dismantling technologies. Although there are various types of radioactive waste generated by decommissioning activities, this review focuses on the major types of waste, such as metal waste, concrete waste, and soil waste together with certain special types, such as high-level and high-salt liquid waste, organic mixed waste, and uranium complex waste, which are known to be difficult to treat. Finally, in a site remediation technology review, a measurement and safety evaluation related to site reuse and a site remediation technique are described.