매립지의 물리화학적 특성에 관한 연구

김영묵,김인규,윤오섭 한국폐기물자원순환학회 1995 한국폐기물자원순환학회지 Vol.12 No.2

하천 수위 변화시 제체의 안정성 증대 방안

김영묵,하헌홍 한밭대학교 건설안전기술연구소 2002 건설안전기술논문집 Vol.2 No.-

The object of this study is to furnish fundamental data for designing and constructing riverside embankment by suggesting methods for the increasement of embankment stability and evaluating infiltration behavior and stability based on the material types and conditions that affect the change and construction of slope of embankment for variable water level. Riverside embankment is stable when it is under and after construction, and in dry season, but it becomes unstable when water permeates into embankment due to the sudden rising of water level during rainfall. The stability of riverside embankment differs from the features in civil engineering such as soil type, embankment condition, permeability, and shearing strength, and the variation of slope condition. Therefore, a careful investigation of these factors has to be made to examine the embankment stability. Riverside embankment has a complex infiltration behavior depending on the change both in a outland water level and in soil types, permeability, slope condition, and basic ground. The results of this study are as follows. The saturation region was formed around the waterside and when water level ascended, floodwater level and water level descended. The slope stability has decreased in floodwater level, and it has increased in descending level more than if it was in floodwater level. This must be caused by neither making a sudden descent of water level nor being a high embankment in height. Supposing that the number of minimal permissible stability is 1.3, the stability could be maintained no condition that the cohesion is c=0.8t/㎡, ø=30°, and α_t=1.9t/㎥ in case of slope inclination of 1.3 for stability. On condition that the cohesion is 1.0t/㎡, the stability could be maintained on ø=20° in case of slope inclination of 1.3 but when the slope inclinations is 1 : 2.5, in could be stable only over ø=30° The result shows that the material types for banking and the maintenance of soil compaction are very crucial factors for stability. In Proved that the gradient of slope and the cohesion of material for banking affected greatly the stability of embankment during a flood, and compared with those effect, the inner friction angle made smaller influence on it.

降雨로 인한 道路盛土 斜面의 不安定性 評價

金英默,崔文喜 大田産業大學校 2000 한밭대학교 논문집 Vol.17 No.1

This study is done to propose more stable of road landfill based on analysis of seepage and slope stability. To conduct of this study 10 regions that were the most terribly damaged out of collapsed road landfills in Chung-Nam area for 5 years from 1995 to 1999 are investigated at site and tested in laboratory. It is picked up a section of 10 collapsed road landfill and carried out analysis of seepage and slope stability during rainfall. The results of this study is summarized as follows. It is difficult to find out the characteristics that could be any cause of collapse from the results of general rests of soil and the method of construction landfill. It is founded that the road landfill is collapsed because saturation region is increased due to long time rainfall, and the time of saturation is depended on initial water content of landfill. The number of slope stability before rainfall is kept at 1.6, but as saturation area is increased due to infiltration of rain, the number of slope stability is lowered under 1. In this case, the process time is influenced initial water content. In case of road landfill in which side waterway prevented infiltration is not installed, a drain filter located on original ground which made by high permeable materials could be good action, and the road landfill is kept stable.

水位 急變化를 고려한 河川 增築 堤體의 浸透 擧動

金英默,陸喆洙 대전산업대학교 1999 한밭대학교 논문집 Vol.16 No.1

To study seepage behaviors a model was designed and designed and was applied to some cases of enlargement of river embankment. The model is simulated and analysed by finite element method. The materials of enlargement are coarse sand, fine sand, and weathered residual soil. Usually, the embankment of small rivers is made of these materials. The aim of this study is to aid for selection of desirable materials for enlargement of old embankment in small rivers. The results of seepage behavior by finite element method are similar to the results of the experiment. The seepage behavior is unstable at the rapid rise and drawdown water level in uniform landfills. The enlargement of outward slope using some sands shows stable seepage behavior in the old embankment made of weathered residual soils. The enlargement of inward slope by some residual soils is more stable seepage behavior in the old embankment made of some sand soils. In this case, the flow of the outward slope is mainly unsaturated flow, and the pore water pressure of the outward slope is low or negative. The outward part of embankment seems to serve as filtration in the stable case of seepage behavior.

負間隙水壓測定用 팁의 開發 및 測定

金英默 大田工業大學 1991 한밭대학교 논문집 Vol.8 No.2

Many natural slope failure in Korea occur every rainy season and the rainy season is concentrated from July to August. The natural slopes are infinite slopes that contain some finite soil depth and dry condition or partly saturated condition. The soil is wetted when rainfall infiltrates into unsaturated ground, generally. This paper aims at the development of tips whitch can measure negative pore water pressure easy and economically, and evaluation of possibility of pratical use. For this purpose an experment study is carried out what is called column test using the tips. From this study the tips of negative pore water pressure measured easy and accuracy is creditable.

강우시 도로포장이 도로성토사면의 안정에 미치는 영향

김영묵,어경제 한밭대학교 건설안전기술연구소 2004 건설안전기술논문집 Vol.4 No.-

The effects of road pavement influence on stability of road landfill by rainfall infiltration were analyzed in this study. A typical landfill model were selected and seepage behaviour was analyzed by finite element method. According to application availability of road pavement, the model were divided by nothing pavement, whole pavement, and portion pavement. And landfill height, rainfall condition, slip surface depth, and change of pore water pressure were analyzed. The research result was as followed. When landfill height was 5m and nothing pavement, increase of pore water pressure was showed remarkedly after rainfall end, but in case of the whole pavement and portion pavement was decreased. In case of the landfill height was 10m, 15m, the pore water pressure change by pavement availability was displayed resemblant change nearly. During rainy season, the stability of landfill was received an influence that landfill height 5m was below according to pavement condition, but in the case was more than 10m, the efect was slight. The depth of sliding from slope surface was showed form that increase according to landfillb height, but the relation of pavement condition about sliding depth could not be divided hardly.

가토란관의 운동과 수정란의 수송에 관한 연구

김영묵 한국축산학회 1965 한국축산학회지 Vol.7 No.1

數値解析에 의한 降雨時의 浸透 特性

金英默 동국대학교 대학원 1988 大學院硏究論集-東國大學校 大學院 Vol.18 No.-

The annual rainfall in Korea is about l,153mm and more than 2/3 of the annual rainfall occurrs during summer season. During rainfall, extensive landsliding is followed over the sloping areas. The occurrence of landsliding in the sloping areas is due to increment of saturation of the soil by surface infiltration and ground water during rainfall. If the rainfall intensity is greater than the saturated hydraulic conductivity of the soil, a pond of water or surface runoff on the soil can be resulted. The static water pressure of surface runoff or ponding water influences infiltration characteristics. The aim of this study is to understand the infiltration characteristics of unsaturated soil during rainfall. In order to investigate the effects of rainfall on the infiltration characteristics, it is assumed that the soil consist of Del Monte fine sand. Some interesting problems involving unsaturated flow are analyzed numerically by UNSAT2 program based on Galerkin's weighted residual method.

어머니

김영묵 새가정사 1965 새가정 Vol.- No.-

대기온도에 따른 300 MW 석탄가스화복합발전 성능특성

김영묵,유호선,Kim, Young-Mook,Yoo, Ho-Seon 한국플랜트학회 2018 플랜트 저널 Vol.14 No.3

In this study, the output and thermal efficiency of Taean Integrated Gasification Combined Cycle Plant were calculated by using the manufacturer's basic design data and the performance correction factor for each atmospheric temperature, and the actual performance was measured at summer and winter representative points. The results were compared with the calculated values to verify their validity. The thermal efficiency is the highest at around $15^{\circ}C$ and lower at lower temperature and higher temperature. This is similar to that of natural gas Combined Cycle Power Plant, but the thermal efficiency has drastically decreased due to the increase of power consumption of the air separation unit at relatively high temperature. The output is highest in the range of 5 to $15^{\circ}C$, and is kept almost constant at below $5^{\circ}C$ and declines above $15^{\circ}C$. The reason why the output does not increase at low temperatures is that the torque limit of the shaft is activated by the increase of the flow rate due to the nitrogen injection of the gas turbine combustor. In order to improve the performance in the future, efforts should be made to improve the power generation output and to reduce the power consumption of the air separation unit in summer.