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近年来渠江续建工程可行性研究,拟先期完建渠化渠江上游达县至凉滩河段。在可行性研究中,对续建工程确定上游设计最高通航水位是按照《船闸设计规范》规定。《船闸设计规范》总体篇(试行)规定,船闸设计最高通航水位标准,Ⅳ级船闸为20～10%洪水频率。在山区河流上暴涨暴落,洪峰历时很短的Ⅲ—Ⅳ级船闸,通过论证可采用低一级的洪水标准;山区溢洪船闸的上游设计最高通航水位,可根据具体情况通过论证后确定,但不低于建船闸前河道的通航标准。渠江属山区河流,洪峰暴涨暴落,洪枯
In recent years, Drainage River continued construction feasibility study, it is proposed to complete the canal upstream of Drainage Drainage River to the beach section. In the feasibility study, the design of the uppermost navigable water level for the renewal project was in accordance with the Code for Ship Lock Design. The Code for Design of Ship Lock (Provisional) stipulates that the highest navigable water level is designed for locks, and the floodgates for Grade IV are 20% to 10% of the flood frequency. In the mountainous area, there are soaring and violent floods in the mountainous rivers, and the flood peak lays for a very short period of Ⅲ-Ⅳ grade locks. The lower level of flood standard can be adopted for demonstration. The uppermost designed navigable water level for upstream spillway locks in mountainous areas can be determined after verification according to the specific conditions. Not less than the navigable standard before the construction of the river lock. Canal river is a mountain river, floods skyrocketing, floods