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我国目前大江大河乃至小河溪沟的行洪范围内,特别是城市河段乱修乱建、设置行洪障碍的情况相当普遍,有的已发展到了十分严重的程度。究其原因,笔者认为这是由于长期以来河道缺乏强有力的管理,尤其是河道管护范围不明等原因造成的。如何比较科学地确定一条河道的管护范围线,以有效地防止在行洪河道内乱设行洪障碍,我认为江河划定“三线”是一个费省效宏和科学管理河道的较好办法。本文谨就嘉陵江南充市、县城区河段划定“三线”工作为例,与同行共同探讨河道管理之法。南充市、县城区河段划定“三线”工作是从1984年开始的,到1985年年底基本完成了划定“三线”的任务。一、何谓江河“三线”
At present, in our country, large river and even small river brook in the scope of flood control, especially in the urban river, indiscriminate construction, setting floods and hurdles are quite common, and some have developed to a very serious degree. The reason, I think this is due to the lack of a long-term strong management of the river, in particular, the scope of the management and maintenance of the river caused by other reasons. How to scientifically determine the scope of management and protection of a river channel so as to effectively prevent the disorderly passage of flood and water in the flood channel? I think it is a good idea to delineate the “third line” of the river and to save the river scientifically. This article would like to Jialing River Nanchong city county delineated the “three lines” as an example, with their counterparts to discuss the law of river management. Nanchong City, County River District designated “three lines” work is from 1984 onwards, by the end of 1985 basically completed the task of delineating the “three lines.” First, what is the river “three lines”