• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.324-329
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• 2010

The surroundings around subway are becoming more lively for project of CBD (an redevelopment project), however vibrations which are made through passing train cold spread buildings around. The structure-borne noise could be generated at the same time that makes people including developers and th citizens have negative viewpoint on railway. Especially, Seoul Metro 1-4 lines ar built alongside the road nearby houses and business district. That could make plenty of public resentments because of the structure-borne noise. Seoul Metro should make active alternative plans for their future urban environment projects which will be conducted. The case was Railway Facility which were conducted to minimize structure-borne noise from sharp curved track section (4 line, Sinyongsan~Ichon, R 250m). The section is adjacent to house district as near as 6.6m related with pusing international city project, the 4th urban environment project around international building, near Yongsan station. The interval of sleepers would be downsized in half with breaking existing case, and pad stiffness is reduced 4 ton from 10 ton. That makes structure-borne noise minimized because of vibrations are lowered about 19.1-23.0db. The structure above has remained for a year and a half from October, 2008, and had not any trouble to perform excellence with 80million ton rail accumulated tonnage.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.792-800
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• 2007

The annual power cost for Seoul metro operations is about 65.5 billion won, of which rail motors account for 60% among total power consumptions. It is expected that the power consumption would increase because of global warming, future high electric equipments demands, etc. To reduce these consumptions, it is necessary to analyze the transportation demands of passengers, arrange the power-saving driving environments, respond flexible vehicles service, and improve how to drive vehicles. These method to reduce power consumption for rail motors can lead to improve the Seoul metro management. In this research, the improvement plan is derived by collecting and analyzing the data for total 33 power consumptions factors, screening top 10 factors by priority and impact, establishing each hypothesis to execute correlation and recursion analyses. As a result of 4 items research among top 10 affected factors, the power consumption for rail motors in 2006 is effectively reduced; the power usage is down with 13,870 kwh, from 531,539 kwh to 517,669 kwh, and the cost is down with 1,026 million won, from 39, 334 million won to 38,308 million won.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.1551-1559
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• 2007

Seoul Metro has been constructing the screen doors on the platforms to provide safe and comfort environments. The screen doors of each station are configured so that they can be operated in automatic mode in connection with ATC/ATO through the integrated control panel in the station control room and in manual mode through the control panel of the station control room and crew control panel. These systems have been implemented with different data communication protocols between systems, HMI configuration, and so on due to ordering processes, implementation time and diverse suppliers, and manufactured to be operated within single station. Seoul Metro has been planning to implement the integrated control system to secure seamless train operation and safety and to have a fast response system against emergency situations such as PSD failure and fire, by implementing the system that is able to collectively manage, monitor and control the operation status and equipment conditions of PSD on to the integrated control center. This paper has studied a scheme to reduce the budget for the future facility constructions by standardizing the data format for data communication with the integrated station control panel and using the open standard protocols, in order to secure consistency of operation, system expansion and maintenance with unified and standardized control items.

• 대한안전경영과학회지
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• 제17권3호
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• pp.65-79
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• 2015

This study intended to investigate exploratorily the precedent factors affecting two types of perceived balances between work and life(family/leisure) and the antecedent ones affected by them, focusing on the metro train drivers. To attain this purpose, literature survey on the precedent factors, work-life balance, and antecedent factors was performed, and the study model was designed based on this survey, and then this model was analyzed empirically using Multiple-Regression. The results on the precedent factors showed that Job Demand, Self-Efficacy, and Age have significant effects on the negative transfer of work. On the other hand, it was shown that Affiliative Culture, Self-Efficacy, and Internal Locus of Control have significant effects on the family centered balance. And the results on the antecedent factors showed that family centered balance has significant effects on Job Satisfaction, Psychological Depression and Fatigue, Safety Behavior, and accident, and the negative transfer of work has significant effects on Physical and Psychological Depression and Fatigue, Emergency Stress, and Safety Behavior.

• 한국철도학회논문집
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• 제11권5호
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• pp.482-488
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• 2008

국내 최초로 민간자본이 투자된 대형 지하철인 서울 9호선은 김포공항과 강남을 연결하는 1차 구간이 2009년 개통을 앞두고 있다. 지자체와 민간이 시설을 건설하고 전문 공공교통 서비스회사가 운영을 맡는 9호선은 보유한 자원을 최고로 활용하여 최대의 효율성을 이끌어낼 필요가 있으며, 관련 기관과의 적극적인 협력을 통한 핵심역량발휘와 경쟁력 제고가 필요하다. 본고에서는 9호선 운영분야에 초점을 맞추어 완급결합을 중심으로 한 9호선 운전체계와, 타 교통수단과의 연계, 공항철도와의 효과적인 직결운행 측면에서 9호선의 운영개선 방안을 제시한다.

• International Journal of Air-Conditioning and Refrigeration
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• 제17권3호
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• pp.94-99
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• 2009

In the Korean subway station, three types of pre-filters, which include auto filter, electrostatic precipitator (ESP) and auto cleaning demister, are widely used. However, these devices have some problems such as the difficulty of maintenance and high operating cost. In this study, axial-flow cyclone separator was employed as a pre-filter inside a heating, ventilation, and air conditioning (HVAC) system. 3-dimensional computational fluid dynamics (CFD) analysis was performed on a single unit axial-flow cyclone and coupled unit axial-flow cyclone. Calculated and measured pressure drop of the designed axial-flow cyclone were found be comparable to other types of pre-filters and the observed cut-off diameter was less than 10 micron. Considering lower operating and maintenance cost, axial-flow cyclone was proved to be a better solution as a pre-filter.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.974-980
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• 2006

The government makes an effort to disperse the centralization of Seoul through the its surroundings development for relieving the various social problems caused by the capital region concentration. But, the planless development of rail system in the capital region have made it difficult to approach into Seoul city center from its surroundings. Through Seoul metro line 9, constructed by private company first in Korea, that has operation plan with normal and express train together, we would like to study up on promotion of passenger service quality such as "the improvement of the accessibility to Seoul city center from its surroundings" and "service of various pattern of trains"

• 한국철도학회논문집
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• 제16권6호
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• pp.482-491
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• 2013

현재 운영 중인 광역철도 승차권은 교통카드와 정기권 등으로 매우 제한되어 있어, 소비자 선택에 한계가 있으며, 소비자 수요의 다양성을 고려한 승차권 제도 도입이 필요한 실정이다. 이에 외국 주요도시에서 사용 중인 다양한 승차권 제도 운영을 분석하여 우리나라 수도권 광역철도 승차권 제도가 보다 효율적으로 운영되는 방안을 제시하였다. 주요내용으로는 대중교통 이용 촉진 및 비용부담 감소, 수익증대의 효과로 이어질 수 있도록 하여 외국에서 일반화되어 있는 1일권 승차권, 승용차 출퇴근자의 승객과 승차인원 증대를 위한 출퇴근권 및 경춘선 등에 서비스가 공급대비 수요가 부족한 경우에 한해 왕복 여행객에 대한 특별할인 왕복승차권 제도 도입을 제안하였다.

• 대한토목학회논문집
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• 제38권5호
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• pp.703-711
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• 2018

최근 다양한 도시철도 노선이 건설되고, 주변노선과 연계가 이루어짐에 따라 도시철도 이용률이 증가하고 있다. 하지만, 정부는 여전히 기존의 획일적인 운임정책을 고수하고 있어, 다양한 이용패턴에 체계적인 대응을 하지 못할 뿐만 아니라, 공공성 위주의 운임정책으로 인해 운영사의 수익성 악화라는 구조적 문제점이 발생하고 있다. 본 연구는 도시철도 운임정책의 합리성을 제고하기 위해 일본, 영국 등 주요 선진국의 도시철도 운임정책을 검토하였다. 운임정책에 대한 체계적인 분석을 위해 운임결정방식, 카드운임에 대한 할인제도, 운임구조, 그리고 정부 보조금 정책 등의 관점에서 살펴보았으며, 이를 토대로 대한민국 수도권 도시철도 운임정책의 문제점 및 개선방안을 도출하였다. 본 연구를 통해 도시철도 서비스 수준과 수익성에 부합하는 적정 요금정책을 수립하여 합리적인 도시철도 운영에 도움을 줄 수 있을 것으로 기대한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1441-1446
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• 2008

Seoul Metro Line 9 (SML9) is the first subway line that private capital invests in Korea. SML9 will cross Seoul, linking the Gimpo Airport to the Gangnam district (25.5km) opening in the first half of 2009. SML9 has a new model in Korea constructed by metropolitan government and private company and operated by specialized public transportation service provider. SML9 is confronted with tough environment of stagnated public transportation and strong competitor, Olympic city expressway. And SML9 is under pressure for showing high efficiency as non-governmental organization from both customers and government. Consequently SML9 must lead the maximum efficiency by using its material and human resource. It is necessary that SML9 raise a competitive power and display its ability in active collaboration with relative organization and company. Hereupon, I propose renovation plans from viewpoint of operation field of SML9, (1) efficient train scheduling regime focusing on the combination of express and local train (2) close connection of other mean of transportation and (3) effective connection convention with Airport Railroad (AREX) as the line connected directly.