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一、问题的提出淮河流域西起桐柏山、伏牛山,东临黄海,南以大别山和皖山余脉与长江流域分界,北以黄河南堤和沂蒙山与黄河流域分界。除西南部和东北部为山区丘陵外,其余是一个广阔的平原。流域内有淮河与沂沭泗两水系组成,跨河南、安徽、江苏、山东四省的一部分。流域面积为270000平方公里,其中淮河水系190000平方公里,沂、沭、泗水系80000平方公里。淮河流域上游源短流急,洪水来势汹猛,传播时间短。全流域大、中、小型水库星罗棋布,共有5200座,总库容230亿立方米,其中库容1亿立方米以上的大型水库35座,库容
I. PROBLEM PROBLEMS The Huaihe River basin starts from Tongbai Mountain and Funiu Mountain in the west to the Yellow Sea in the east. The boundary between the Dabie Mountains and the Wan Mountains in the south and the Yangtze River valley in the south and the Nantai and Yimeng Mountains in the north and the Yellow River boundary in the north. In addition to the hills in the southwest and northeast for the hills, the rest is a vast plain. Within the basin are the Huaihe River and the Yishusi two water systems, crossing Henan, Anhui, Jiangsu and Shandong provinces. Basin area of 270,000 square kilometers, of which the Huaihe River 190,000 square kilometers, Yi, Shu, Surabaya 80000 square kilometers. Huaihe River upstream source short stream urgent, flooding potential turmoil, propagation time is short. There are 5200 large, medium and small-sized reservoirs in the basin, with a total storage capacity of 23 billion cubic meters, of which 35 large reservoirs with a storage capacity of over 100 million cubic meters include storage capacity