水资源保护
水資源保護
수자원보호
Water Resources Protection
2015年
6期
141-149
,共9页
沉积物%再悬浮%侵蚀阈值%剪切应力%测量方法
沉積物%再懸浮%侵蝕閾值%剪切應力%測量方法
침적물%재현부%침식역치%전절응력%측량방법
sediment%re-suspension%erosion threshold%shear stress%measurement method
为了研究沉积物侵蚀、再悬浮、运输等一系列行为机制,从实验室装置模拟法、室外原位装置测量和野外直接测量3个方面总结了沉积物再悬浮测量方法。将沉积物再悬浮测量装置分为循环水槽、直流水槽及其他仪器,描述了各类装置的基本工作原理、优缺点及适用环境,并对不同装置的测量结果进行对比。基于现有的技术和方法,主要是通过测量底床侵蚀剪切力和悬浮物浓度变化来定量分析沉积物再悬浮现象,剪切力施加方式、测试时间及仪器大小等因素的不同造成了各类装置测量结果的差异性。
為瞭研究沉積物侵蝕、再懸浮、運輸等一繫列行為機製,從實驗室裝置模擬法、室外原位裝置測量和野外直接測量3箇方麵總結瞭沉積物再懸浮測量方法。將沉積物再懸浮測量裝置分為循環水槽、直流水槽及其他儀器,描述瞭各類裝置的基本工作原理、優缺點及適用環境,併對不同裝置的測量結果進行對比。基于現有的技術和方法,主要是通過測量底床侵蝕剪切力和懸浮物濃度變化來定量分析沉積物再懸浮現象,剪切力施加方式、測試時間及儀器大小等因素的不同造成瞭各類裝置測量結果的差異性。
위료연구침적물침식、재현부、운수등일계렬행위궤제,종실험실장치모의법、실외원위장치측량화야외직접측량3개방면총결료침적물재현부측량방법。장침적물재현부측량장치분위순배수조、직류수조급기타의기,묘술료각류장치적기본공작원리、우결점급괄용배경,병대불동장치적측량결과진행대비。기우현유적기술화방법,주요시통과측량저상침식전절력화현부물농도변화래정량분석침적물재현부현상,전절력시가방식、측시시간급의기대소등인소적불동조성료각류장치측량결과적차이성。
In order to study the series of behavioral mechanisms including sediment erosion, re-suspension, transportation, this paper summarized the sediment re-suspension measurement method in three aspects:laboratory device simulation, in situ measurement and directly measurement in field.Sediment re-suspension measuring device can be divided into circulating water flume, straight flow-through flumes, and other devices.Hydraulic working principles, advantages and disadvantages, range of application environment of different devices were described.And the measuring results of different device were compared.Based on existing technologies and methods, the phenomenon of sediment re-suspension was quantified by measuring seabed erosion shear stress and suspended solids concentration changes.Different shearing force, testing time and equipment size and other factors cause the diversity of the result from all kinds of devices.