河底表层泥沙物理特性的快速估算  

Quick Estimation of Surface Sediment Physical Properties of River Bottom

作　　者：李长征[1] 李姝昱[1] 王锐[1] 杨勇[1] LI Changzheng;LI Shuyu;WANG Rui;YANG Yong(Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 450003, China)

机构地区：[1]黄河水利委员会黄河水利科学研究院,河南郑州450003

出　　处：《人民黄河》2018年第3期16-19,共4页Yellow River

基　　金：国家重点研发计划项目(2016YFC0401608);黄河水利科学研究院基本科研业务费专项(HKY-JBYW-2016-09;HKY-JBYW-2016-29)

摘　　要：河底泥沙密度、粒径等是河流动力学研究的必备物性参数。机械取样和浅地层剖面探测是获取泥沙物性的重要途径。将取样测试的泥沙粒径信息与浅地层剖面探测数据结合起来,研究了一种快速的河底泥沙物性参数(密度、孔隙度等)检测方法。利用级配结果确定表征孔隙度和渗透率关系的Kozeny-Carman公式,将该式与孔隙介质模型结合计算河底泥沙密度等参数。采用该方法获取了三门峡库区2个断面的湿密度和波速等参数。将泥沙湿密度计算值与取样测试值对比,发现2个测点的差异较小,证明了该方法的有效性。The sediment density and grain size are the significant physical parameters for river dynamics research.Mechanical sampling and sub-bottom profile detection are important ways to obtain the sediment physical properties.Combining the grain size of sediment obtained by sampling test and sub-bottom profile data,a quick detection method was explored to obtain the sediment physical properties(density,porosi-ty etc.).According to the gradation,Kozeny-Carman formula represents the relationship between porosity and permeability was determined.Two sections'sediment physical properties of Sanmenxia Reservoir,such as density and wave velocity were obtained by adopting this method and effectiveness of this method was verified through the comparison with sampling test.

关 键 词：孔隙介质 浅地层剖面 快速估算 物理特性 表层泥沙 河底 

分 类 号：P332.5[天文地球—水文科学]