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荆江段即指湖北枝江市到湖南岳阳的城陵矶这一段地区。目前,洞庭湖的防洪形势变得日益严峻起来,那么是什么原因导致了这种现象的出现呢,其实这都源于洞庭湖部分泥沙淤积转移到了湖口的城陵矶河段。这样就会导致洞庭湖的调蓄量增大,由于这不是在防洪计划中的一环,这将打乱整体的防洪形势。在三峡水利工程建成以后,长江中下游河段的泥沙淤积现象得到了明显的改善,但泥沙淤积搬家转移的现象在荆江段仍然一直存在。于是人们想到了恢复长江古河道,配合三峡水利工程实现堵住上游的洪水,疏通城陵矶河道泥沙的目的。
Jingjiang refers to Zhijiang City, Hubei Province, Yueyang, Hunan Chenglingji this period of the area. At present, the flood control situation in Dongting Lake has become more and more serious. So what causes this phenomenon? In fact, this is due to the partial transfer of sediment from Dongting Lake to the Chenglingji reach in Hukou. This will lead to an increase of Dongting Lake’s storage capacity, as this is not part of the flood control plan, which will upset the overall flood control situation. After the completion of the Three Gorges Project, sedimentation in the middle and lower reaches of the Yangtze River has been significantly improved. However, the phenomenon of sediment transfer and relocation still exists in the Jingjiang section. So people think of the restoration of the ancient river of the Yangtze River, with the Three Gorges water conservancy project to achieve the blocking of the upper reaches of the flood, clear the sediment of the Chenglingji River.