灌河生态综合治理工程建设必要性分析

Analysis on the Necessity of Construction of Guanhe River Ecological Comprehensive Treatment Project

灌河作为商城县的主要防洪河道,境内长度108 km,控制流域面积1 280 km^(2),占商城县面积的60%,两岸分布有村镇、大量农田耕地和林地,河道多年未进行系统治理,河道淤积严重,河道行洪不畅,岸坡抗冲能力差,汛期极易受洪水侵害,加之商城县洪涝灾害频发,平均2—3年一次,易给沿岸人民群众和粮食生产造成安全隐患和风险。为补齐水利工程短板,强化防洪薄弱环节建设,通过对灌河清淤疏浚和生态岸坡防护,规整水流、稳定河势,并与灌河已治理段相衔接,完善灌河防洪减灾工程体系,提高河道防洪能力,因此对灌河进行综合治理是必要的。

Guanhe River, as the main flood control channel in Shangcheng County, has a length of 108 km and a controlled drainage area of 1280 km^(2), accounting for 60% of the area of the whole county. There are villages and towns, a large number of farmland and forest land on both banks. The river has not been systematically treated for many years, with serious siltation, poor flood discharge,poor anti scour capacity of bank slope, and is vulnerable to flood damage in flood season. In addition, the frequent occurrence of flood disasters in Shangcheng County, with an average of once every 2~3 years, is easy to cause hidden dangers and risks to the people along the coast and food production. In order to make up for the shortcomings of water conservancy projects and strengthen the construction of weak links in flood control, it is necessary to carry out comprehensive treatment of Guanhe River through dredging and ecological bank slope protection, regulate the flow and stabilize the river regime, and connect with the treated sections of Guanhe River, improve the flood control and disaster reduction engineering system of Guanhe River and improve the flood control capacity of the river.