黄河下游河流动力地质作用  

River Dynamic Geological Function of the Lower Yellow River

作　　者：马沛森[1] 张连胜[1] 周文[1] 闫亚宇[1] 

机构地区：[1]河南省地矿局第一水文地质工程地质队,河南郑州450045

出　　处：《人民黄河》2011年第6期13-14,149-150,共2页Yellow River

基　　金：国家地质大调查项目(199916000118)

摘　　要：黄河下游河流动力地质作用主要包括淤积作用、冲刷侵蚀作用和渗流潜蚀,其中黄河下游的淤积作用是最主要的河流动力地质作用。对黄河下游河流动力地质作用效应进行了分析,认为:河流地貌断面形态与输水输沙能力有较大关系;河势变化,尤其是河势突变对河流安全运行有重要影响;渗流潜蚀作用降低和改变土体介质的力学强度和物理性状,可引发渗漏、沙沸、流土等不良工程地质现象和堤岸溃决险情。The river dynamic geological function of the lower Yellow River mainly includes the functions of sedimentation,erosion and seepage subsurface erosion,of which,the sedimentation is the primary river dynamic geological function.The paper analyzes the effect of river dynamic geological function of the lower Yellow River and considers that a) the section form of river morphology has closer relation with the capacity of water delivery and sediment transport;b) the river regime change,especially a sudden change of river regime has significant influence to the security operation of the river and;c) reducing and changing the mechanical strength and physical properties of soil mass medium by the function of seepage subsurface erosion can cause adverse situation of seepage,sand boil and soil flow and dangerous situation of dyke break.

关 键 词：河流动力 地质作用 淤积作用 侵蚀作用 渗流潜蚀 黄河下游 

分 类 号：TV882.1[水利工程—水利水电工程]