• 지질공학
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• 제13권4호
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• pp.457-474
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• 2003

본 연구에서는 창원시 대산면 강변여과수 취수장 부지의 지하수위 변동 특성을 분석하였다. 지하수위 및 하천수위 변동과 하천-대수층간의 상호작용은 장기적으로 취수정의 적정양수량을 평가하는데 중요하다. 2003년 2월부터 2003년 10월까지의 지하수위 분포를 보면 지하수위는 대체로 배후지쪽에서 낙동강 쪽으로 갈수록 낮아지는 경향성을 보이고 있으며, 수두경사는 0.008 정도를 나타낸다. 그러나, 취수정의 양수와 강수량에 의한 낙동강 수위 상승에 의해 일시적으로 유동방향이 역전되기도 한다. 낙동강 수위는 강수량 변화에 따라 해수면 기준으로 0 ∼ 10m를 보인다. 6개 지하수 관측공(DS1, DS2. DS3, DS4, DS6, DS7)에 대해서 자기상관분석을 실시한 결과, 세 개의 그룹으로 분류되었다. 1그룹(DS1호공과 DS3호공)은 강한 선형성과 기억효과를 보여주고, 2그룹(DS2호공과 DS6호공)은 중간정도의 선형성과 기억효과를 나타내며. 3그룹(DS4호공과 DS7호공)은 가장 약한 선형성과 기억효과를 보였다. 1그룹은 낙동강 수위변화의 영향을 상대적으로 많이 받고, 2그룹은 낙동강수위와 취수량의 영향을 동시에 받으며. 3그룹은 취수량의 영향을 가장 많이 받는 것으로 분석되었다.

• 농촌계획
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• 제30권1호
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• pp.15-31
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• 2024

The study primarily aims to examine the characteristics of the transition from natural landscape to modern agricultural landscape on the Daesan plain in Dong-myeon, Changwon-si, in the lower reaches of the Nakdong River. The periods covered in the transition include the late Joseon Dynasty, the early Japanese colonial period, and the late Japanese colonial period. The study concluded the following: It was found that the Daesan Plain used to function as a hydrophilic landscape before it formed into a rural landscape. This is characterized by the various water resources in the Plain, primarily by the Nakdong River, with its back marsh tributaries, the Junam Reservoir and Jucheon. To achieve its recent form, the Daesan Plain was subjected to human trial and error. Through installation of irrigation facilities such as embankments and sluices, the irregularly-shaped wetlands were transformed into large-scale farmlands while the same irrigation facilities underwent constant renovation to permanently stabilize the rural landscape. These processes of transformation were similarly a product of typical colonial expropriation. During the Japanese colonial period, Japanese capitalists initiated the construction of private farms which led to the national land development policy by the Governor-General of Korea. These landscape changes are indicative of resource capitalism depicted by the expansion of agricultural production value by the application of resource capital to undeveloped natural space for economic viability. As a result, the hierarchical structure was magnified resulting to the exacerbation of community and economic structural imbalances which presents an alternative yet related perspective to the evolution of landscapes during the Japanese colonial period. In addition, considering Daesan Plain's vulnerability to changing weather conditions, natural processes have also been a factor to its landscape transformation. Such occurrences endanger the sustainability of the area as when floods inundate cultivated lands and render them unstable, endangering residents, as well as the harvests. In conclusion, the Daesan Plain originally took the form of a hydrophilic landscape and started significantly evolving into a rural landscape since the Japanese colonial period. Human-induced land development and geophysical processes significantly impacted this transformation which also exemplifies the several ways of how undeveloped natural landscapes turn into mechanized and capitalized rural landscapes by colonial resource capitalism and development policies.

• 한국토양비료학회지
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• 제48권5호
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• pp.556-563
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• 2015

Chinese cabbage is one of the most important vegetables in Korea and a target crop for market stabilization as well. Remote sensing has long been used as a tool to extract plant growth, cultivated area and yield information for many crops, but little research has been conducted on Chinese cabbage. This study refers to the derivation of simple Chinese cabbage growth prediction equation by using RapidEye derived vegetation index. Daesan-myeon area in Gochang-gun, Jeollabuk-do, Korea is one of main producing district of Chinese cabbage. RapidEye multi-spectral imagery was taken on the Daesan-myeon five times from early September to late October during the Chinese cabbage growing season. Meanwhile, field reflectance spectra and five plant growth parameters, including plant height (P.H.), plant diameter (P.D.), leaf height (L.H.), leaf length (L.L.) and leaf number (L.N.), were measured for about 20 plants (ten plants per plot) for each ground survey. The normalized difference vegetation index (NDVI) for each of the 20 plants was measured using an active plant growth sensor (Crop $Circle^{TM}$) at the same time. The results of correlation analysis between the vegetation indices and Chinese cabbage growth data showed that NDVI was the most suited for monitoring the L.H. (r=0.958~0.978), L.L. (r=0.950~0.971), P.H. (r=0.887~0.982), P.D. (r=0.855~0.932) and L.N. (r=0.718~0.968). Retrieval equations were developed for estimating Chinese cabbage growth parameters using NDVI. These results obtained using the NDVI is effective provided a basis for establishing retrieval algorithm for the biophysical properties of Chinese cabbage. These results will also be useful in determining the RapidEye multi-spectral imagery necessary to estimate parameters of Chinese cabbage.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2004년도 총회 및 춘계학술발표회
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• pp.447-450
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• 2004

This study was conducted to characterize groundwater and river-water fluctuations at a riverbank filtration site in Daesan-myeon adjacent to the Nakdong River, using time series analysis. Water levels from six observation wells from January 2003 to October 2003 were measured. The autocorrelation analysis indicates that the wells are divided into three groups: group 1 represents strong linearity and memory, group 2 intermediate linearity and memory, and group 3 weak linearity and memory. The analysis indicates that groundwater levels in different monitoring wells vary in response to river-water levels, groundwater withdrawal and seasonal rainfall. Cross-correlation was also divided into three groups. Group 1 shows the highest cross-correlation function (0.49 - 0.54) for a lag time of 0 hours, group 2 intermediate cross-correlation function (0.34 - 0.45), and group 3 the lowest cross-correlation function (0.23 - 0.25). Different cross-correlation functions among the 3 groups are interpreted as an effect of tile distance from the river to the pumping wells.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1992년도 가을학술발표회 논문집
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• pp.137-144
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• 1992

This paper reports a case study of dynamic consolidation. The objective of the study is to evaluate the effectiveness of ground improvement at the site for Hyundai Petrochemical Compound constructed at Daesan-Myeon, Seosan-Gun in the western shores of Korea. The site ground was prepared by filling on the existing soft marine deposit which consists of a loose granular soil layer and a medium stiff clay layer. For the stabilization of site ground, the compaction was executed in three different procedures with same pounder weigh, drop height and imprint spacing. The post investigation showed that the object was successfully achieved indicating a significant increase of bearing capacity of the treated ground. In this study the effectiveness of dynamic consolidation is evluated for various factors the applied energy, temping sequences, the radial distance from the imprint location and the depth of bed rock.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2006년도 총회 및 춘계학술발표회
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• pp.68-71
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• 2006

Seasonal fluctuation of groundwater level by pumping amount and stream discharge at the riverbank filtrate site adjacent to the Nakdong River in Daesan-Myeon was characterized. Groundwater level fluctuation shows increase in wet season (June, July, August and September) and decrease in dry season (the other months). Seasonal variation of pumping amount shows similar trend to the groundwater fluctuation due to higher consumption of potable water in summer. The relation of specific capacity, Nakdong River and pumping quantity was analyzed. The logarithmic relationship between specific capacity and the stream discharge gives high correlation coefficient, 0.96. This fact indicates that the increase of stream discharge rate reduces the rate of drawdown in the pumping area in wet season.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2006년도 총회 및 춘계학술발표회
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• pp.324-327
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• 2006

The high Fe and Mn contents in riverbank filtered groundwater often provoke problems on the water quality, We analyzed the mineral and chemical compositions of the soil samples taken from the different depths of the fluvial deposits at various locations in the riverbank filtration area, Daesan-Myeon. The groundwater chemistry data were also collected from the equivalent depths with the soil samples at the boreholes in July and December, 2005. The relationships between the enrichment characteristics of Fe and Mn in the groundwater and the mineralogical and physicochemical properties of the fluvial deposits were carefully analyzed. The results indicate that the Fe and Mn contents in the groundwater vary with seasonally and show different enrichment behaviors.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2005년도 총회 및 춘계학술발표회
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• pp.446-450
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• 2005

Hydraulic conductivity of unconsolidated media can be determined by aquifer tests, laboratory tests and empirical equations based on grain size analysis. Commonly, the different methods give different hydraulic conductivities. Grain size measurements were done to determine hydraulic conductivity, using 184 soil samples collected from eight boreholes in a riverbank filtration area, Daesan-Myeon, Changwon City, Korea, Pumping tests were conducted at the riverbank filtration area. The average hydraulic conductivity by the empirical relations from grain size measurements comes out around $10^{-2}m/s$, 22 to 55 times higher than by the pumping test analyses. The hydraulic conductivity obtained from the empirical equations is interpreted to have a relationship with steady-state condition while that obtained from the pumping tests is interpreted to have a relationship with unsteady-state condition. Thus, hydraulic conductivity obtained from various methods should be critically analyzed for reasonable management of groundwater development.

• 자원환경지질
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• 제37권5호
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• pp.499-508
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• 2004

창원시는 전국에서 최초로 2001년에 북면과 대산면에 강변여과수 취수장을 건설하여 운영하고 있다. 본 연구는 창원시 북면 낙동강 본류 하안의 강변여과수 취수장 주변에 대해서 수리지질 특성을 평가하고 낙동강과 강변대수층간의 지하수유동 모델링을 수행하였다. 이를 통하여 강변여과수 취수에 따른 낙동강물과 지하수 유입량을 평가하였다. 지하수모델링에서는 시추자료, 입도분석자료, 양수시험분석자료, 지하수위 측정자료, 낙동강 수위 측정자료, 강수량 자료를 이용하였다. 정상류 모델링으로 강변여과수 취수 이전의 자연상태의 지하수위를 잘 모사할 수 있었다. 부정류 상태 모델링에서는 7개 취수정의 최대 양수량인 총 14,000$m^3$/day로 취수시의 지하수위 하강을 모사하였으며, 이때 낙동강으로부터의 유입량, 배후지쪽의 지하수 유입량 그리고 강변대수층의 동측과 서측으로부터 유입량은 전체 유입량의 각각 8,390$m^3$/day(60%), 590$m^3$/day(4%), 5,020$m^3$/day(36%)이다. 입자 추적 모사 결과, 낙동강쪽으로부터 취수정 쪽으로의 유입속도는 약 1.85m/day이고, 배후지로부터 취수정 쪽으로의 유입속도는 약 0.75m/day이다. 본 연구는 지표수/지하수 연계관리 모델링에 공헌하며, 강변여과수 취수량, 수질, 자연적인 함양량이 계절적으로 어떻게 영향을 받는지를 이해하는데 도움을 줄 것이다.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2006년도 총회 및 춘계학술발표회
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• pp.307-311
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• 2006

Chemical analyses were conducted for Nakdong River water and riverbank filtrate in Daesan-Myeon area, Changwon City in 2005. Chemical components show different trends in wet season (June, July, August and September) and dry season (the other months). The patterns of chemical variation are classified into four types. Chemical components belonging Type I, as Na and $HCO_3$, show decrease in concentration during wet season and increase in concentration during dry season for both Nakdong River water and the riverbank filtrate. Chemical components belonging Type II, as Mg and $SO_4$, show decrease in concentration during wet season and increase in concentration during dry season for Nakdong River water while show the opposite trend for the riverbank filtrate. Chemical components belonging Type III, as Cl and $NO_3$, show increase in concentration from the start of wet season and high concentration during dry season for both Nakdong River water and the riverbank filtrate. Chemical components belonging Type IV, as Fe, show increase in concentration during wet season and decrease in concentration during dry season for both Nakdong River water and the riverbank filtrate.