• Journal of the Korean GEO-environmental Society
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• v.23 no.2
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• pp.25-36
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• 2022

In this study, seepage control effect of relief well was evaluated quantitatively on embankment of small fill dam and levee. Seepage analysis of dam and levee were carried out according to the permeability of fill material and foundation and to analyze behaviour characteristics of seepage. The up-lift pressure at toe of embankment was analyzed which is generated by seepage according to relief well installation condition. The relief well could reduce pore water pressure which is to cause piping or up-lift pressure at foundation ground of embankment and it does not be influenced on geometric condition such as dam height and slope incline. In case of relative low permeable ground, the pore water pressure reduction effect of relief well was decreased compare with high permeable ground but it shows pore water pressure reduction effect compare with no relief well condition. The reduction effect of relief well shows relative gap according to diameter and penetration length of relief well and the installation length of relief well is the most effective factor for seepage control.

• Journal of The Korean Society of Agricultural Engineers
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• v.62 no.6
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• pp.119-129
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• 2020

Through 3D seepage analysis of pressure relief well installed on the embankment of agricultural reservoir, the effects of reducing pore water pressure and hydraulic gradient, and increasing piping safety, depending on diameter (0.2, 0.4, 0.6 m) and space (10, 25, 50 m) of relief well, were analyzed. The conclusions drawn through this study are as follows. i) At the location of pressure relief well, pore water pressure decreases by 25.3~62.5%, and hydraulic gradient decreases by 22.4~55.7%. ii) Between relief wells, pore water pressure decreases by 2.7~40.3%, and hydraulic gradient decreases by 2.8~47.0%, which are relatively less than at the cross section of installed location of relief well. iii) Piping safety factor by critical hydraulic gradient increases by 28.9~125.6% at the location of relief well and increases by 2.9~88.8% between relief wells. iv) Seepage analysis needs to be performed by the 3D method to make evaluation of seepage at the location of relief well and between relief wells possible. v) Additional evaluation is required for various conditions such as waterhead, engineering characteristics of embankment body and its foundation, location, diameter, spacing and depth of pressure relief well.

• Tunnel and Underground Space
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• v.28 no.3
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• pp.247-257
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• 2018

High-speed trains have been developed widely in many countries in order to transport large quantity of people and commodities rapidly. When a high speed train enters a tunnel, aerodynamic resistance is generated suddenly. The resistance caused from air pressure induces micro pressure wave and discomfort to passengers in a train. Therefore, a pressure relief system should be installed in a tunnel to reduce the resistance acting against the running train in a tunnel. Additionally, the shape of a grain should be streamlined in order to reduce aerodynamic resistance caused by a high-speed train. The cross-section of a tunnel also should be carefully designed to reduce discomfort of passengers. This study represents the effect of pressure relief ducts installed between two running tunnels. The pressure relief duct was integrated with a cross-passage in order to save cost and construction time. One-dimensional network numerical simulations were carried out in order to estimate the effect of pressure relief systems.

• Journal of the Korean GEO-environmental Society
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• v.21 no.2
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• pp.5-13
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• 2020

The relief wells have been studied to be effective in seepage control in small dams such as agricultural dams. However, quantitative studies on the effects of the relief well are rare and there is no design standard also. To quantitatively analyze the effects of the seepage control in small dams, the research of up-lift pressure influencing the toe of dam body was conducted by seepage analysis, which investigates the behavior characteristics, according to the conditions of dam and foundation. The effect of seepage control was studied by analyzing the reduction effect of up-lift pressure at foundation ground of the toe of downstream dam slope depending on the installation of the relief well. As a result, it was found that the relief wells are effective in reducing the pore water pressure in the foundation, which can cause piping and sliding failure.

• Tunnel and Underground Space
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• v.26 no.5
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• pp.375-383
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• 2016

High-speed trains have been developed widely in many countries in order to transport a large quantity of people and commodities rapidly. When a high speed train enters a tunnel, aerodynamic resistance is generated suddenly. This resistance causes micro pressure wave and discomfort to passengers. Therefore, it is essential to incorporate a pressure relief system in a tunnel and streamlined shape of a train in order to reduce aerodynamic resistance caused by a high-speed train. Additionally, the cross-sectional area of a tunnel should be carefully determined to reduce discomfort of passengers. A pressure relief duct and a vertical shaft are representative measures in a tunnel. This study represents the effect of pressure relief ducts in order to alleviate pressure changes within a time period in a tunnel. One-dimensional network numerical simulations were carried out in order to estimate the effect of pressure relief systems.

• Journal of Fashion Business
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• v.19 no.2
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• pp.182-199
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• 2015

This research aims to design a new style jacket by developing patterns with dart manipulation, to achieve a tailored jacket which has been familiar to us, but with a more creative design. Tailored jackets has been widely worn both by women and men, and used to create various fashion styles. Generally the classic design with a basic lapel and collar is worn the most, and this shows demonstrates an importance of its design. Giacomo Manzu's work of relief art inspired for a creative design of tailored jackets. As a result of the analysis on the visual properties of the relief sculptures, it was found that an omissions of line for cubic effect and dramatized expression give an illusion effect. Based on the illusion effect shown in the case of a relief design, it was patterned and designed with dart manipulation. Through dart manipulation, the shape of a lapel was designed to meet the rear collar, which corresponds to a background plane, by making it like a sculpture at the front background pattern. Then it was found through dart manipulation could be extensively applied for various designs, as well as used to generate massing. Hopefully this creative pattern and design development would be helpful not only in diversification of consumer's needs, but also in the educational field for pattern and development of the fashion design industry.

• Journal of the Korean Institute of Telematics and Electronics
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• v.25 no.6
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• pp.629-636
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• 1988

The reduction of recovery time for delay, in the train movements, is generally realized through train operations in the shortest running time and it leads to maximum energy consumption. At the region of this shortest running time, the amount of energy consumption is sharply reduced according to the running time. So the effect for the energy savings can be largely obtained by furnishing a little spare time on train operations. In this paper, it has been modelized the delay and it's enlargement phenomena and formualted the relief patterns in order to restore the delay by restraint and relief of precedent traints. Also it has been proved the number of relief trains for minimum energy consumption exists and then represented one example of relief patterns.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.3 no.1
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• pp.7-15
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• 1997

The purpose of this study was to exame the pain relief effects of myofascial pain syndrome patient by Post-Isometric Relaxation. From July, 1996 to January, 1997, PIR was applied to myofascial pain syndrome associated with musculoskelatal lesions and was examed on 17 muscles in 98 patients at Sun General Hospital, Taejon city. The results of this study were as follows ; 1. Immediate pain relief group was 58(59%). 2. Only tenderness relief group was 24(25%). 3. No effect group was 16(16%). These results could be confirmed that the increased tension of the affected muscles with the resulting pain relieved by restoring the full stretch length of the muscle by PIR.

• Journal of Korean Physical Therapy Science
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• v.4 no.1
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• pp.255-263
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• 1997

The purpose of this study was to examed the pain relief effects of myofascial pain syndrome patient by post-isometric relaxation. From July, 1996 to January, 1997, PIR was applied to myofascial pain syndrome associated with musculoskelatal lesions and was examed on 17 muscles in 98 patients at Sun General Hospital, Taejon city. The results of this study were as follows ; 1. Immediate pain relief group was 58(59%). 2. Only tenderness relief group was 24(25%). 3. No effect group was 16(16%). These results could be confirmed that the increased tension of the affected muscles with the resulting pain relieved by restoring the full stretch length of the muscle by PIR.

• The Journal of Korean Medicine
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• v.36 no.3
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• pp.111-125
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• 2015

Objectives: The purpose of this study was to analyze the current cases of oriental medical injury relief data from Korea Consumer Agency (KCA), and to report the current change of oriental medical disputes pattern. Methods: Oriental medical injury relief cases processed by KCA from January 2010 to February 2015 were collected and analyzed. Results: 149 Oriental medical injury relief cases from KCA were analyzed for the study. The highest number that had been relieved was 43 in 2014. In monthly status, 18 case in September was The highest. According to the record, the bigger city had the bigger amount of relief cases which was 53(Seoul), 43(Gyeng-gi), 11(Busan) and so on. In age categories, 30s had the highest number of injury relief cases. The injury relief cases of package program had been rapidly increasing since 2013. Cancellation was the dominant claims cause of package program and consumer required the refund of prepayment. Breast augmentation was the majority treatment type of injury relief cases of package program. Average prepayment of package program was \3,166,085. Conclusions: This study finded that the major cause of oriental medical dispute was changed from side effect of clinical treatment to patient's satisfaction of medical service.