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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Geoenvironmental Society
Journal Basic Information
Journal DOI :
Korean Geo-Environmental Society
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Volume & Issues
Volume 6, Issue 4 - Dec 2005
Volume 6, Issue 3 - Sep 2005
Volume 6, Issue 2 - Jun 2005
Volume 6, Issue 1 - Mar 2005
Selecting the target year
A Study on the Characterization of Geotechnical Properties in Permeable Barriers Mixture of Bentonite, Loess, and Sand
Chun, Byung-Sik ; Park, Jae-Woo ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 5~12
In this study, the geotechnical applicability of permeable barriers that could filter the leachate from a landfill was evaluated. Specimens were cast from sand, loess and bentonite according to the specific weight ratios of them. A series of experiments are performed to determine the unconfined compressive strength and permeability of various mixing ratio of bentonite, loess, and sand. From the laboratory test, optimum mixing ratio that satisfied the regulations of unconfined compressive strength(
) and coefficient of permeability (
) in landfill was found when the weight ratio of sand and loess was 8:2 with 2% of bentonite. Using the laboratory test data and in situ test results, the applicability of the wall will be tested for various conditions.
Development of a Computer Program to Estimate Landfill Liner Thickness
Do, Nam-Young ; Lee, Seung-Rae ; Jeong, Kwang-Young ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 13~26
In this study, research results on organic and inorganic pollutant migration through single and composite liner were summarized. On the basis of these summarized research results, a design program for landfill liner, which can be used to optimize the liner thickness based on the allowable ground water criteria around the landfill subsurface, was developed. A reasonable liner thickness was obtained from the program output results, in the case of the migration of
ion through a single clay liner. Therefore, the developed program could be used to carry out a preliminary design for landfill liners with respect to organic and inorganic pollutants.
The Assessment for Environmental Stabilization in Open Dumping Landfill Site from Physical Composition and Gas Analysis - A Case Study of Noeun Landfill -
Lee, Min-Hee ; Jang, Byoung-In ; Yun, Cheol ; Yeon, Ik-Jun ; Kim, Kwang-Yul ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 27~35
A case study of the assessment for environmental stabilization in open dumping landfill site was carried out physical composition, total solid, moisture, and landfill gas(LFG) analysis in landfill site. The result of physical ratio were represented combustibles 23.64% and incombustibles 76.36%, TS 77.69%, VS 74.24%, FS 25.75%. The biodegradable organic matters were almost degraded and the result of the landfill gas showed that the
gas were measured as 4.5%. As the result of the assessment on the open dumping landfill it appears that this landfill is stabled for the maturation phase and formation
concentration lower than 15%.
Behavior of Weathered Soil Reinforced with Waste Tire Mat
Yoon, Yeo-Won ; Cheon, Sung-Han ; Heo, Seung-Bum ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 37~46
Waste tires can be used not only for reinforcement material due to its high capacity against tensile force but also effective for massive treatment. In order to use waste tire as reinforcing material Tread mat using tire treads only was made. Plate load tests on the embankment of decomposed granite soil reinforced with Tread mat and geogrids were conducted for comparison with the test results, respectively. And numerical analyses were performed to see the stress and stain around the reinforced material. Tread mat showed bearing capacity increase and the amount was bigger than that of commercial geogrids. Finite element analysis showed decrease of stress beneath the reinforced material and stress distribution. Finally Tread mat was proposed to use for soil reinforcement as a means of massive treatment of discarded tire.
Seepage Behavior with Unsaturated Soil-Water Characteristic in Reclaimed Deep Excavation Area
Shin, Bang-Woong ; Lee, Heung-Gil ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 47~58
Development of underground space is conducted for various useful facility and underground structures and deep excavation technology for reclaimed area has been researched and developed. The seepage flow and behavior of phreatic line in reclaimed area was predominated by transient flow caused by tidal action. Also the soil-water characteristic relation is most important factor for transient flow analysis, therefore the research about the soil-water characteristic is strongly required. In this paper, laboratory tests (pressure cell, desiccator, and tensiometer test) and theoretical analysis were performed to investigate the soil-water characteristic such as air-entry value, metric suction, and residual water content. And the feasibility of prediction method for soil-water characteristic are presented by transient seepage analysis and comparison between analysis results and in-situ measured seepage flux in LNG TK-00 storage tank. Based on the result of laboratory and theoretical analysis, Fredlund and Xing's method provide to work out well for reclaimed ground soils. Also, the transient analysis result is more reasonable and effective for design of deep excavation work in coastal and reclaimed ground.
A Study on the Effectiveness of the Mortar Jet Method in Increasing the Strength of the Soft Ground
Chun, Byung-Sik ; Baek, Ki-Hyun ; Jooi, Tae-Seong ; Do, Jong-Nam ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 59~64
Although high pressure discharge method is widely used for improving soft ground, it has various problems including lack of strength increase and the possibility of water pollution and soil contamination. MJM(Morta Jet Method) uses sand in addition to cement as the injection material. MJM uses triple rods with a built-in nozzle that allows easier discharge of the slime, resulting in higher replacement area ratio and more uniform formation of pillar hydrates, and thus results in significant increase in strength. MJM is expected to perform especially well as piles in marine clays. This study investigates the field applicability of the MJM through extensive laboratory and field tests.
A Study on Seepage Cutoff Effect of the Environmentally Friendly SCM
Chun, Byung-Sik ; Roh, Jong-Ryun ; Jooi, Tae-Seong ; Do, Jong-Nam ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 65~71
Recently, difficulties in soft ground improvement that caused by effectiveness of the ground improvement, the durability and environmentally friendliness of the injection material come to the fore. This paper studies the field applicability of the SCM in reinforcement and seepage cutoff of the back of an existing continuous wall. SCM uses double rod which imposes heavy pressure(
) to disturbed, cut, discharge, and mix the ground. It is observed that a bulb is formed by using cement paste and environmentally friendly injection materials with minimal alkali leaching. Unconfined compression test and fish poison tests are performed. Test results indicate that the method results in higher durability, less leaching through use of the environmentally friendly injection material, and faster mobilization of the strength. In addition, field tests confirm the formation of the bulb and the seepage cutoff wall.
An Analysis for Urban Change Using Satellite Images and GIS
Shin, Ke-Jong ; Yu, Young-Geol ; Hwang, Eui-Jin ;
Journal of the Korean Geoenvironmental Society , volume 6, issue 4, 2005, Pages 73~80
The domestic Remote Sensing field uses mainly Landsat TM image that is used to the monitoring of the wide area. In this study, it is analyzed the land cover change of rural and urban area by time series using satellite images and is proposed the vision for a urban balanced development. It execute an analysis for urban change which is a fundamental data of city planning through the integration of the spatial analysis technique of GIS and Remote Sensing using satellite data.