• 농업과학연구
• /
• 제38권1호
• /
• pp.163-172
• /
• 2011

To provide the operation rule curve for suppling instream flow to urban stream from reservoir, the Soho reservoir with watershed area of 7.4 $km^2$ and total water storage of 2.58 $Mm^3$ was planned at the headwaters of the Daejeoncheon. Daily streamflow was simulated and using the simulated streamflow and desired instream flow, the operation rule curve by Senga method was drawn and evaluated through reservoir operation. Senga method is derived by accumulating the differences between streamflow and desired instream flow adversely. Water storages were simulated on a daily basis to supply urban instream flow from Soho reservoir, but the amount of supplying instream flow to urban stream was not nearly increased comparing with that of normal operation that does not used the rule curve. Thereafter the new simulation-based operation rule curve was derived and applied to supply instream flow from Soho reservoir. In normal operation, the amount of instream flow was shown to 15,000 $m^3$/d, but it was increased to 27,700 $m^3$/d in withdrawal limited operation using the new derived rule curve, in which the applicability of this rule curve was proved. Also comparing with the flow duration curves at station just before urban Daejeoncheon stream without and with upstream Soho reservoir, the 95th flow was decreased from 1.64 mm/d to 1.51 mm/d, and the 355th flow was increased from 0.17 mm/d to 0.30 mm/d. Monthly streamflows during October to March were increased from 10.6~24.1 mm to 24.1~34.0 mm with the increasing rate of 141~227%.

• 한국관개배수논문집
• /
• 제18권1호
• /
• pp.68-80
• /
• 2011

To provide a operation rule curve for reservoir with low ratio of watershed area to paddy field area, Duckyong reservoir with watershed area of $15.8km^2$ and paddy field area of 1,071ha was selected, in which 4 meters are being heightened and full water levels will be increased from EL.26.0m to EL.30.0m, total water storages from 365.6M $m^3$ to 708.0M $m^3$. There was no operation rule curve that satisfied over 90% reliability of water supply in reservoir with watershed area of 1.48 times of paddy field area. The differences between observed and simulated reservoir daily water storages were minimized to determine parameters for simulating reservoir inflow in case of paddy field area of 550ha from 1991 to 2010. A operation rule curve was drawn to have a maximum storage with total water storage, which was in paddy field area of 700ha with ratio of 2.3 between watershed area and paddy field area. This case showed that annual irrigation water supply was 668M $m^3$ and instream flow of 57M $m^3$, water supply reliability of 55.6% in normal operation, and annual irrigation water supply was 605M $m^3$ and instream flow of 38M $m^3$, water supply reliability of 95.6% in withdrawal limited operation. Water supply reliabilities showed 35.6% without flood regulation and 17.8% with flood regulation in existing reservoir before heightening.

• 한국농공학회:학술대회논문집
• /
• 한국농공학회 1999년도 Proceedings of the 1999 Annual Conference The Korean Society of Agricutural Engineers
• /
• pp.117-122
• /
• 1999

The state of drought was evaluated by the operation rule curve. From the present percentage of reservoir storage and the operation rule curve, it could be determined to ristrict the irrigation water supply to a certain level and eventually to overcome the shortage of water in the irrigation reservoir.

• 한국농공학회지
• /
• 제45권5호
• /
• pp.67-76
• /
• 2003

The principal operation rule of irrigation reservoir is to accelerate the water use and supply water actively when water is sufficient, and to restrict water use and supply water deficiently in order not to stop the irrigation activity when water is scarce. In drought seasons. water should be saved in order to keep the reservoir not to be dried up during the irrigation season. It is important to know how much water should be saved, depending on the rice-growing season and water storage volume. For the drought control of irrigation reservoirs. the rotational irrigation scheduling in paddy with the operation rule curve developed in this study could be utilized as a software program to install TM/TC system for irrigation water supply by automation facilities.

• 한국농공학회:학술대회논문집
• /
• 한국농공학회 1998년도 학술발표회 발표논문집
• /
• pp.81-86
• /
• 1998

It is difficult to know how to restrict the amount of water supply in the drought season, because there is no objective standard rules. The purpose of the study is to present management rules to overcome the drought in the irrigation reservoir by forecasting the water level and restricting water supply according to the operation rule curve and the pattern of rotation-irrigation system. From the operation rule curve drawn up by analyzing the observed water level of reservoir, the water supply rules and rotation-irrigation patterns using WWW and GIS are suggested.

• 한국수자원학회:학술대회논문집
• /
• 한국수자원학회 1987년도 제29회 수공학연구발표회논문초록집
• /
• pp.183-190
• /
• 1987

• 대한토목학회논문집
• /
• 제42권6호
• /
• pp.803-814
• /
• 2022

라오스 정부는 증가할 것으로 예상되는 전기 수요량을 충족하기 위해, 남능강 유역 내에 기존 8개소의 발전소 외에도 발전소 댐을 지속적으로 개발하고 있거나 기존 발전소의 발전 설비용량을 증설하고 있다. 이에 따라 라오스 정부는 발전소를 효율적으로 운영하기 위해 기존 저수지 운영규정 곡선(reservoir operation rule curve)을 갱신할 필요성을 제기하였다. 본 연구는 이를 위해 범용적인 동적 계획법(Dynamic Programming:DP) 프로그램인 CSUDP를 활용하여 발전소에서 생산되는 연간 발전량을 극대화하기 위해 현재의 단독 운영체계 외에 연계 운영체계도 검토하였다. 이의 결과로부터 적절한 운영규정 곡선 형태(URC/LRC, MRC)를 추출하였고, 이를 HEC-ResSim 프로그램의 저수지 운영 세트의 운영기초 자료로 입력하여 연간 발전량을 모의하였다. 모의된 연간 발전량과 기존의 운영규정 곡선, 운영실적, 그리고 현장 운영자의 의견 등을 종합하여, 대상 발전소의 연간 발전량을 최대화하는 최적의 저수지 운영규정 곡선(reservoir operation rule curve)을 개발하였다. 이 경우, 저수지를 연계하여 운영하는 체계가 저수지 단독의 운영체계보다 연계에 따른 시너지 효과로 약 2.5 %의 발전량을 더 생산하는 것으로 모의 되었다.

• 한국농공학회지
• /
• 제37권E호
• /
• pp.47-54
• /
• 1995

Irrigation water has been mainly used for paddy rice. Irrigated paddy land tends to be recently converted to land for green house, farm house, and rural-industrial complex. Consequently, demand of water for crops, domestic & industrial, rural recreations, small-scaled hydropower, livestocks, and environment in the rural area, so called rural water, is rapidly increasing. In order to supply rural water, water in the existing irrigation reservoir could be enlarged by repairment of irrigation canal and reinforcement of irrigation reservoir, and be saved by the operation rule curve, utilization of dead water, and balanced storage management.

• 농업과학연구
• /
• 제37권3호
• /
• pp.481-490
• /
• 2010

Baekgog reservoir is located in Jincheon county, Chungbuk province, of which full water levels will be heightened from EL. 100.1 m to EL. 102.1 m, and total storages from 21.75 $Mm^3$ to 26.67 $Mm^3$. The simulation for reservoir inflow was conducted by DAWAST model. The annual average irrigation water was estimated to 33.19 $Mm^3$ supplied to 2,975 ha and the instream flows could be allocated with 0.14 mm/d from October to April with annual average of 2.52 $Mm^3$. The operation rule curve was drawn using inflow, irrigation, and instream flow requirements data. The reservoir water storage was simulated on a daily basis in case of both normal and withdrawal limit operation. In case of normal operation, the annual average irrigation water supply increased from 31.95 $Mm^3$ to 33.32 $Mm^3$, the instream water supply from 2.40 $Mm^3$ to 2.44 $Mm^3$, the water storages from 15.74 $Mm^3$ to 19.88 $Mm^3$, and the water supply reliability from 77.3 % to 81.6 %. In case of operation with withdrawal limit, the amount of instream water supply was 2.52 $Mm^3$ from reservoir regardless of the condition while the water storage increased from 16.77 $Mm^3$ to 20.65 $Mm^3$. The irrigation water supply capacity was appropriate for the case of normal operation with 2 m heightened condition. The present instream water supply capacity was 35,000 $m^3$/d (6.86 $Mm^3$/y) while 42,000 $m^3$/d (8.36 $Mm^3$/y) in 2 m heightened condition in case of withdrawal limit operation.

• 물과 미래
• /
• 제18권3호
• /
• pp.225-233
• /
• 1985

홍수시 한강수계 댐군의 Simmulation에 의한 연계 운영방안을 개발하기 위하여 충주댐 단일 운영 방안들을 비교 검토한다. 따라서, 본 논문에서는 저수지 및 하도 특성을 고려하여 수립된 제약조건과 빈도별 유입량 자료를 사용하여 Spillway rule curve에 의한 방안과 rigid ROM, 그리고 Linear Decision Rule에 의한 방안을 수립하였다. Simulation에 의하여 각 운영방안의 설계홍수에 대한 저류 및 방류특성을 비교하고, 여러 가지 빈도에 대한 조절율 및 이용율을 산출하였으며, 조절상수의 설계빈도에 따른 변화를 검토하였다. 이와 같은 비교검토 결과, 홍수크기에 따른 최적방안을 제안하고, 유입량의 예측에 따른 조절상수의 산정에 의하여 rigid ROM과 Linear Decision Rule에 의한 방안 적용의 효과를 개선할 수 있다.