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[来源:www.yuniguhua.com] [作者:淤泥固化] [日期:19-06-26]

河道整治措施
Measures for river regulation
一、防洪工程。加强河、库治理,完善防洪减灾体系,以堤防为基础,控制性枢纽工程为骨干,防汛调度指挥系统为中枢,确保城镇和重点地区的防洪安全。继续加强建设以关田、铅厂二个圩镇防洪堤,并以此为辐射加强沿河两岸农田的防洪护岸,另一个是以建立县城防洪堤体系,拉动小江下游沿河两岸的防洪基础设施建设和重点河段河道整治。以发电和供水为主的水利枢纽要按照流域防洪规划的要求,安排留足防洪库容;按照分级负责的原则,抓紧进行病险水库除险加固,加强水文测报、防汛调度指挥系统等非工程措施建设,逐步建立与经济社会发展水平相适应的防洪减灾保障体系。
1. Flood control works. Strengthen River and reservoir management, improve flood control and disaster mitigation system, take dike as the foundation, control hub project as the backbone, flood control dispatching command system as the center, to ensure flood control safety in cities and key areas. We will continue to strengthen the construction of flood control embankments in two towns, Guantian and Lead Factory, and use them as radiation to strengthen flood control and bank protection of farmland along both sides of the river. The other is to establish a county-level flood control embankment system to promote flood control infrastructure construction along both sides of the lower reaches of the Xiaojiang River and river regulation in key sections. The hydro-junctions with power generation and water supply as the main components should keep enough flood control reservoir capacity in accordance with the requirements of flood control planning of the river basin; according to the principle of graded responsibility, they should strengthen the construction of dangerous reservoirs, strengthen the construction of non-engineering measures such as hydrological forecast and flood control dispatching command system, and gradually establish a flood control and disaster reduction guarantee system that is compatible with the level of economic and social development.
二、水利建设。抓好大中型灌区的续建配套与技术改造,同时加快灌区管理体制和运行机制的改革,充分利用多种渠道筹集资金,加强灌区水利设施建设,搞好配套和农田水利基本建设。按照水利水资源有序开发的原则,充分发挥资源优势,规划和建设水力发电项目,使水电成为经济发展的支柱产业。
2. Water Conservancy Construction. We should do a good job in the continuation, matching and technological transformation of large and medium-sized irrigation districts, accelerate the reform of the management system and operation mechanism of irrigation districts, make full use of various channels to raise funds, strengthen the construction of irrigation facilities, and do a good job in matching and basic construction of farmland water resources. According to the principle of orderly development of water resources and water resources, give full play to the advantages of resources, plan and build hydropower projects, so that hydropower becomes the pillar industry of economic development.
三、开口堤的修建。开口堤是在堤防的上游按一定标准设防,头部以下堤防高度逐渐降低,尾部不建堤,这样洪水就从尾部慢慢淹入区内滞纳洪水,可防止洪水从堤防头部进入保护区毁坏农田;洪水退后,保护区内洪水及时从尾部开口处排出,开口堤宜布置在干流区与河源区衔接段,还可与蓄滞洪区的布设相结合。这一技术的推广着眼于减少干流区洪水损失,进一步提高干流区的防洪能力。
3. Construction of open dikes. Open dike is built in the upper reaches of the levee according to certain standards, the height of the dike below the head decreases gradually, and no dike is built at the tail, so that the flood slowly submerges into the area from the tail to detain the flood, which can prevent the flood from entering the protective area from the head of the dike to destroy farmland; after the flood recedes, the flood in the protective area is discharged from the tail opening in time, and the open dike should be arranged in the connecting section between the main stream area and the source area, and also. It can be combined with the layout of flood storage and detention areas. The popularization of this technology aims at reducing the flood losses in the main stream area and further improving the flood control capacity in the main stream area.
四、堤防上设置溢洪堰。堤防上设置溢洪堰是指在封闭式堤防上选择一段,将其设计成允许洪水漫溢的堰坝,堰顶高程与规划防洪水位齐平,当遇超标准洪水时,洪水可从溢洪堰溢入堤防保护区。这样既可起到超标准洪水的滞洪,降低外口水位,保护重要城镇等设施安全,又可平衡两侧水位,起到保护堤防安全,减少水毁工程的作用。
4. Spillway weirs shall be installed on embankments. Setting up spillway weir on embankment refers to choosing a section on closed embankment and designing it as a weir allowing flood to overflow. The height of weir top is equal to the planned flood control level. When the flood exceeds the standard, the flood can spill from the spillway weir into the protection area of embankment. In this way, it can not only detain the excessive flood, reduce the water level of the outer mouth, protect the safety of important towns and other facilities, but also balance the water level on both sides, protect the safety of embankments and reduce the damage of flood works.

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