CAJ | 학술논문

为减少西江流域灾害性洪水给广西工农业生产及人民生命财产带来的损失,针对多年实测洪水资料,从洪水年内分布特性、洪水组成、干支流洪水遭遇等方面对广西境内西江流域洪水特性进行全面分析。分析成果表明,柳江洪水发生时间与干流基本相应,桂江洪水发生时间较早,郁江洪水发生时间晚于干流；柳江对形成干流洪水的贡献很大,郁江和桂江对干流大洪水的形成作用有限；柳江与红水河洪水遭遇可能性很大,年最大洪峰流量、7 d洪量、15 d洪量遭遇的概率分别为34.1%、47.7%和52.3%,且遭遇洪水的量级也较大,3 d洪量为50~100亿m3,7 d洪量为100~200亿m3。郁江与干流洪水遭遇概率较低,桂江洪水基本不与干流遭遇且遭遇洪水的量级很小,年最大洪峰流量、7 d洪量、15 d洪量遭遇的概率仅为4.5%、9.1%和15.9%。
위감소서강류역재해성홍수급엄서공농업생산급인민생명재산대래적손실,침대다년실측홍수자료,종홍수년내분포특성、홍수조성、간지류홍수조우등방면대엄서경내서강류역홍수특성진행전면분석。분석성과표명,류강홍수발생시간여간류기본상응,계강홍수발생시간교조,욱강홍수발생시간만우간류；류강대형성간류홍수적공헌흔대,욱강화계강대간류대홍수적형성작용유한；류강여홍수하홍수조우가능성흔대,년최대홍봉류량、7 d홍량、15 d홍량조우적개솔분별위34.1%、47.7%화52.3%,차조우홍수적량급야교대,3 d홍량위50~100억m3,7 d홍량위100~200억m3。욱강여간류홍수조우개솔교저,계강홍수기본불여간류조우차조우홍수적량급흔소,년최대홍봉류량、7 d홍량、15 d홍량조우적개솔부위4.5%、9.1%화15.9%。
In order to reduce the loss of Guangxi’s industry, agriculture and property caused by flood of the Xi Jiang River, the flood characteristics of the Xi Jiang River in Guangxi including annual dis-tribution characteristics, flood composition and branch/main stream floods encounter are fully ana-lyzed, based on the measured flood data spreading over several decades. The results show that the Liu Jiang River flood synchronizes with the mainstream flood in general, while the Gui Jiang River flood happens earlier and the Yu Jiang River flood happens later than the mainstream; that the Liu Jiang River contributes more to the forming of mainstream flood, while the Yu Jiang River and the Gui Jiang River have limited effect;that flood from the Liu Jiang River and the Hong He River have high probability to encounter, the actual encounter probabilities of the maximum, 7 d and 15 d flood volume, are 34. 1%,47. 7% and 53. 2%,respectively,and the magnitude of the encountered floods is large, 7 d flood volume is five to ten billion cubic meters, and 15 d flood volume is ten to twenty billion cubic meters;that the Yu Jiang River flood and its mainstream flood have low probability to <br> meet, and the Gui Jiang River flood almost dose not encounter with the mainstream flood, the en-counter probabilities of the annual maximum flood, maximum 7 d and 15 d flood volume are only 4. 5%,9. 1% and 15. 9%, respectively.