在人口密集地区治理大江大河,行、蓄洪问题往往是难点所在。人越多,行洪、蓄洪越频繁,治理难度就越大。治淮面临的这方面问题尤为突出。淮河干流王家坝以下400多公里河段西侧,密布着30处行、蓄洪区,涉及190多万人以及他们赖以生存的370多万亩耕地,有的每隔两、三年进洪一次,有的五、六年至多十年进洪一次。频繁的行、蓄洪,实现了巨大的防洪减灾效益,京沪铁路、两淮煤矿、电厂及沿淮重 In the densely populated area to deal with the great rivers, banks, flood storage is often the problem lies. The more people, the flood, the more frequent the flood, the greater the difficulty of governance. Huaihua this issue is particularly prominent. More than 400,000 km of the Huaihe River dam below the western section of the river, densely covered with 30 lines, flood storage area, involving more than 190 million people and their survival of more than 370 million mu of arable land, and some flood every two or three years , And some five or six years into the flood at most once a decade. Frequent lines, flood storage, to achieve a tremendous flood control and disaster reduction benefits, the Beijing-Shanghai Railway, coal mine in the two Huai River, power plants and heavy Huaihe