长江上游叙渝段采砂坑分布及对水位的影响  

Distribution of sand excavation pits and its influence on water level in Xuyu section of upper reaches of the Yangtze River

作　　者：张帅帅[1,2] ZHANG Shuai-shuai(National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University,Chongqing 400074,China;Changjiang Chongqing Harbor and Waterway Engineering Investigation and Design Institute,Chongqing 401147,China)

机构地区：[1]重庆交通大学,国家内河航道整治工程技术研究中心,重庆400074 [2]长江重庆航运工程勘察设计院,重庆401147

出　　处：《水运工程》2021年第6期135-140,共6页Port & Waterway Engineering

基　　金：国家重点研发计划课题(2016YFC0402104)。

摘　　要：从多年实际情况来看,长江宜宾至重庆河段冲淤是基本平衡的,相对于采砂来说砂石补充量很小,同时也很慢,所以势必造成河床纵向和横向变形,从而改变河流河势,进而引起航道水流条件变化。通过实测资料得到长江宜宾至重庆河段的滩面破坏区特征参数。通过数学模型计算并结合典型滩险实测地形和水位资料,分析得出:目前无序采砂坑已经使甑柄碛河段和部分航行水尺附近的水位在枯水期有一定的降低,给航道维护部门和船舶航行带来了一定困难。需要重点研究和关注这个问题。Judging from the actual situation for many years,the scour and deposition of the reach of the Yangtze River from Yibin to Chongqing is relatively balanced,and the replenishment of sand and gravel is very small and slow compared with sand mining.So it is bound to cause longitudinal and lateral deformation of the riverbed,thus changing the river regime and causing changes in the flow conditions of the waterway.Based on the measured data,the characteristic parameters of the beach failure zone in the reach of the Yangtze River from Yibin to Chongqing are obtained.Through mathematical model calculation,and combined with the measured topography and water level data of typical beach dangers,the analysis shows that:the current disorderly sand mining pits have reduced the water level to a certain extent near the Zengbingqi river section and part of the navigating water gauge during the dry season,which has brought some difficulties to the waterway maintenance department and ship navigation.This issue needs to be studied and paid attention to.

关 键 词：采砂 采砂区 宜宾至重庆河段 

分 类 号：U612[交通运输工程—船舶及航道工程]