摘要
本文针对潮汐河口的演变特点 ,依据冲积河流稳定性概念 ,提出了以河床冲淤强度表征的纵向稳定指标和以宽深比表征的河床横向稳定指标 ,并利用突变理论建立了由上述两个指标组成的河口稳定性的尖点突变模型 ,给出了河口稳定性的综合判据和河口演变图式 .实际应用表明该模型能较好地解释河口演变过程和描述河口的稳定状态 ,可为充分合理地整治及开发河口提供依据 .
The longitudinal stability index of estuary characterized by river bed degradation and aggradation intensity and the transversal stability index characterized by the ratio of river width to depth are proposed. By using these synthetic indexes the catastrophic model for describing the stability and evolution process of estuary is established based on the catastrophic theory. The discrimination of stability and the evolution mode can be deduced. The application to the analysis of the Qiantang River shows that the model is reasonable in explaining the evolution process and estimating the stability of the estuary.
出处
《水利学报》
EI
CSCD
北大核心
2001年第9期10-15,21,共7页
Journal of Hydraulic Engineering
关键词
河口
稳定性
突变模型
河床演变
estuary
stability
evolution
catastrophic model
