河道采砂对航道和通航环境安全的影响

Effect of sand excavation on channel and navigation environment in river

以武汉市神龙三厂一期场平工程吹填采砂为例,采用二维水沙数学模型对拟定的4个采区采砂后工程河段的流速、水位的变化及回淤情况进行了计算分析,重点对采砂后采砂河段的航道和通航环境安全影响进行了分析。结果表明,在拟布置的采砂区,按设计的方量进行采砂,对航道和通航环境安全不会产生明显不利的影响。

Taking the reclamation and sand-excavation engineering of a leveling engineering in Wuhan as an example,we analyzed the changes of velocity,water level and back-silting of the four sand excavation regions by the 2D model on water and sediment,with the emphasis laid on the impact on channel and navigation environment of the sand excavation.The results show that there would be no obvious unfavorable influences on the safety of channel and navigation environment if the sand excavation is carried out under the design amounts in the design regions.