• 상하수도학회지
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• 제37권6호
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• pp.347-361
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• 2023

Water utilities are making various efforts to reduce water losses from water networks, and an essential part of them is to recognize the moment when a pipe burst occurs during operation quickly. Several physics-based methods and data-driven analysis are applied using real-time flow and pressure data measured through a SCADA system or smart meters, and methodologies based on machining learning are currently widely studied. Water utilities should apply various approaches together to increase pipe burst detection. The most intuitive and explainable water balance method and its procedure were presented in this study, and the applicability and detection performance were evaluated by applying this approach to water supply pipelines. Based on these results, water utilities can establish a mass balance-based pipe burst detection system, give a guideline for installing new flow meters, and set the detection parameters with expected performance. The performance of the water balance analysis method is affected by the water network operation conditions, the characteristics of the installed flow meter, and event data, so there is a limit to the general use of the results in all sites. Therefore, water utilities should accumulate experience by applying the water balance method in more fields.

• 대한위생학회:학술대회논문집
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• 대한위생학회 2006년도 추계학술심포지움 및 정기총회
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• pp.43-56
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• 2006

• 한국물환경학회지
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• 제22권3호
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• pp.386-396
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• 2006

• 상하수도학회지
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• 제29권4호
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• pp.459-468
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• 2015

Deposits discharged through the cleaning mainly were cement mortar, bitumen paintings and rust pieces, and fragments of perforation, stones and gravels. Deposits were more removed through swabbing pig cleaning rather than air scouring cleaning on the whole. However, air scouring cleaning were not influenced by the constraint conditions such as a change in the diameter or the presence of the valve in water mains compare to swabbing pig cleaning. So, it was thought that air scouring cleaning might be more favorable to water distribution network cleaning in the future. After the cleaning, water quality including residual chlorine and turbidity also was improved because of the removal of a significant amount of the deposits. Therefore, if the cleaning is continuously and regularly implemented in water mains, it is expected that it will help to recover the reliability and to preserve the health of water quality.

• 상하수도학회지
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• 제26권3호
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• pp.361-372
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• 2012

In order to establish the methodology for estimating an emergency drinking water supply in Korea, overseas cases and accidents history of cutting off water supply were investigated, and questionnaire was conducted. Investigating accidents history of cutting off water supply in Korea, actual cutting off times of most cases were less than 13hours. Also, cases related with water quality and facility failure have been not enough to derive useful information for estimating an emergency water. From the results of questionnaire and cross-tabulation analysis, about 1,066 lpcd(liter per capita${\cdot}$day) as an emergency water and 14 days as tolerable outages time could be estimated. The results of water quality simulation could tell us that it might take 5-16 days for pollutant matter to travel from 15 contamination points to source water intake point in the selected reservoir(D-dam). This travel time was in good accordance with the estimated tolerable outage time, 14days.

• 물과 미래
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• 제52권6호
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• pp.33-37
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• 2019

• 한국수자원학회논문집
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• 제43권7호
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• pp.625-633
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• 2010

수자원개발의 한계와 수질의 오염으로 인해 제한된 수자원을 효율적으로 이용하고 수질을 보전하기 위한 통합수자원관리가 절실히 요구되는 상황이다. 최근 이를 위해 수자원을 통합적으로 평가하여 계획의 수립을 지원할 수 있는 통합수자원평가계획모형(K-WEAP)을 개발하였다. 본 연구에서는 3가지 부문에서 K-WEAP의 적용성을 평가하였다. 첫째는 수자원장기종합계획에 적용한 K-WEAP의 물 수급 전망 과정과 분석결과를 통하여 수자원 계획의 도구로서 K-WEAP의 유용성을 제시하였다. 둘째는 K-WEAP에서 제공하는 지표수-지하수 연계모의를 통해 보다 합리적이고 지속가능한 지하수이용 계획을 제시하였다. 마지막으로, K-WEAP의 수질모의 신뢰성을 평가하기 위하여 석화천을 대상으로 QUAL2E 모형의 결과와 비교하여 수량-수질 통합관리평가의 기능을 확인하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 춘계학술대회
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• pp.284-287
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• 2022

K-water는 기후위기에 따른 물관리의 복잡성, 불확실성에 대응하기 위해 수문자료 센싱, 고품질의 데이터 관리 등 ICT 인프라 운영 경험 및 물관리 역량을 기반으로 디지털트윈 물관리 플랫폼을 구축하였다. 본 플랫폼은 유역내 실시간 기상·수문 관측자료와 유관기관 정보를 연계하여 3차원 지형자료에 표출하고 홍수, 수질 등 다양한 상황을 시뮬레이션하여 결과를 표출 및 분석하고 이에 대한 피드백을 통해 최적의 의사결정을 지원하는 체계로 구성되어 있다. 본 플랫폼은 섬진강유역을 대상으로 시범구축 하였으며, 향후 5대강 유역을 대상으로 공간적 범위를 확대할 계획이다. 이를 통해 댐 하류·지류 합류부 등 재해 취약지점까지 아우르는 종합적인 물관리 의사결정의 One-System으로 확장할 계획이다. 또한 안전하고 효율적인 물관리를 기반으로 새로운 물산업 생태계를 조성하고, 민간기업과의 기술협력을 통해 디지털 물산업 기술 경쟁력 확보에도 기여하고자 한다.

• 상하수도학회지
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• 제28권4호
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• pp.441-451
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• 2014

The flushing is important to maintain good water quality in water main. It is a technique of using water velocity to remove sediments in water distribution system. The variety of water quality problems can occur in a distribution system, so too can a variety of benefits be gained by system flushing. In order to effectively perform the flushing, the contaminants to be removed to set up and it can be solved, it is necessary to ensure the proper flow rate. In this study, the removal of contaminants present in the inner water pipe attached loose deposits such as fine particles of granular activated carbon, sand and iron corrosion product sought to derive flow rates. Thus, the constant observation of using pilot plant scale water distribution plant for the movement of floating characteristics of particles were assessed.

• 물과 미래
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• 제51권11호
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• pp.47-54
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• 2018