北宋时期,东南地区的物资通过漕运运抵京师贮藏,物资输送进京通过运河四州中转。在北宋东南漕运格局下,运河四州的地位要比淮南地区其他州军突出,政府对运河四州的水利建设重视程度也要明显高于其他州军,这使得北宋淮南地区水利工程布局明显以辅助漕运为主要出发点;南宋定都杭州,东南地区物资输送的方向指向杭州或者总领所指定的位置,在南宋东南漕运格局下,淮南地区在漕运上的地位有所下降,同时也失去了转般、籴买的功能。这种变化使得南宋淮南地区的水利布局不再单一地以漕运为重点进行建设,出现了以漕运、灌溉、防备水患、防敌等功能并立的局面,淮南地区水利工程建设的布局出发点发生了变化。 During the Northern Song Dynasty, materials in the southeast of China were delivered to Beijing for storage through watercourses, and materials were transported to Beijing for transit through four canals. Under the pattern of water and transportation in the southeastern Song Dynasty, the status of the four states of the canal is more prominent than that of other state troops in Huainan. The emphasis of the government on water conservancy construction in the four states of the canal is also obviously higher than that of other state forces. Auxiliary water transport as the main starting point; the capital of the Southern Song Dynasty capital Hangzhou, southeast of the direction of material transfer to Hangzhou or designated by the general manager of the designated location in the pattern of southeastern shipping in Southeast China, the status of Huainan in the water transport has declined, but also lost Like, 籴 buy function. This change made the layout of water conservancy in Huainan area of ​​Southern Song Dynasty no longer be focused solely on the construction of water transport. There emerged the situation that the functions of water transport, irrigation, preparedness and anti-enemy were combined. The layout of water conservancy construction in Huainan started to change .