摘要
潮白河香河段全长26.48km,以香河县的吴村闸为界,上游为潮白河,下游为潮白新河。上游的潮白河属于弯曲型河段,滩地内植被和村庄较多;下游的潮白新河属于顺直型河段,滩地内植被相对较少。在对该河段的生态治理中,如实反映滩地上地面附着物的分布情况,模拟和量化附着物的糙率值,构造洪水演进模型和确定边界条件等因素,将直接决定设计水面线的推求成果的真实性,进而影响工程的投资。通过采用综合糙率的常规水面线推求方法与建立二维非恒定流洪水演进数学模型相结合,可更好地进行验证和分析,为工程提出相对合理而准确的水面线成果。
The total length of Chaobai River in Xianghe County is 26.48km,bounded by Wucun sluice in Xianghe County.The upstream is Chaobai River and the downstream is chaobaixin river.The Chaobai River in the upper reaches is a curved section with more vegetation and villages in the floodplain.The downstream of chaobaixin River belongs to straight river,and the vegetation in the beach is relatively less.In the ecological management of this reach,factors such as truthfully reflecting the distribution of the surface attachments on the beach,simulating and quantifying the roughness value of the attachments,constructing the flood routing model and determining the boundary conditions will directly determine the authenticity of the calculation results of the design water surface profile,and then affect the investment of the project.By combining the conventional water surface profile calculation method of comprehensive roughness with the establishment of two-dimensional unsteady flow flood routing mathematical model,a variety of methods can be used for better verification and analysis,and relatively reasonable and accurate water surface profile results can be put forward for the project.
作者
徐磊
刘钦
张静静
XU Lei;LIU Qin;ZHANG Jingjing(Hebei Water Conservancy Planning and Design Institute Co.Ltd,Shijiazhuang 050021,China)
出处
《水科学与工程技术》
2022年第3期22-25,共4页
Water Sciences and Engineering Technology
关键词
潮白河
综合糙率
水面线
Chaobai River
comprehensive roughness
water surface profile
