山丘区行洪河道汛期清淤施工方案分析——以合肥二十埠河为例

Analysis of the Construction Plan for the Dredging of the Flood Channel in the Hilly Area— Take the Twenty Bu River in Hefei as an Example

摘要:

对于需在汛期进行的山丘区行洪河道清淤施工，需克服汛期河道流量大、流速快、水位高带来的困难，保障施工安全的同时还需考虑工程施工对河道行洪的影响；若河道沿线建有多级蓄水建筑物、河道日常流量较大、周边用地情况复杂，则进一步增加了施工难度。以合肥二十埠河为例，对复杂情况下的山丘区行洪河道汛期清淤施工的特点和难点进行了分析，阐述此种条件下如何合理制定施工方案，以期能为类似工程提供参考。

Abstract:

For the desilting construction scheme of flood discharge river course in hilly area in flood season, it is necessary to overcome the difficulties caused by large river discharge volume, high velocity and high water level in flood season, ensure the construction safety, and consider the impact of the construction of the project on the flood discharge of river course. If there are multi-level water storage buildings along the river course, the daily flow of the river is large and the surrounding land-use situation is complex, thus incresing the construction difficulties further. Taking the 20Bu River in Hefei as an example, this paper analyzes the characteristics and difficulties of desilting construction in flood season in hilly area under complex conditions, and expounds how to formulate reasonable construction scheme under such conditions, in order to provide reference for similar projects.