Analysis And Evaluation Of Hydrological Monitoring Programs For Small And Medium Rivers In Harbin

Hydrological monitoring plays an important role in providing tim ely and effective information for flood control flood,restrict ed by clim ate,natural,econom ic and technological conditions,Harbin area still has quite a few sm all rivers have an important flood control task did not carry out hydrological monitoring work,unable to control the real-time rainfall information.This dissertation takes the Harbin ar ea small river hydrological monitoring construction project,by m eans of data collection,observation data,field investigation,analysis of the project area hydrolo gy,meteorology and geological cond itions and the existing monitoring scheme,analysis and evaluation on the river in the area of the water monitoring project.The work and achievements are as follows:1.Collect and sort out the basic data of the study area,and analyze the hydrological monitoring status of the s mall and medium-sized rivers in the study area.Through the data analysis of flood disaster in the area of Mulan County,Tonghe County Cha Lin River,river,small river,Tung Tung River and northwest Yilan County Ba Lan River,Poplar River,A Cheng River Ashe is most prominent in the area of hydrologic network density is sparse,hydrological st ations layout is unreasonable,sm all river hydrological station less,hydrologic survey capability should be strengthened.2.The study area of the river were analyzed,the sand content of the river bed is small,relatively stable river shipping ADC P and other new equipm ent has very good effect,especially for medium and sm all rivers flood douzhang steep fall,even in a relatively short period of time(from the st arting point and the depth of water flow measurement the velocity,and can achieve results),long distan ce transmission fast,meet the flood control and defense tar gets.Small rivers mostly live far from the population,radar level gauge,tipping bucket and other automatic measuring equipment to meet the water level and r ainfall observation continuity,timeliness and a ccuracy requirements.3.According to the analysis of small and medium river monitoring program,with the gradual m aturity of autom atic measurement and forecasting techno logy,hydrological monitoring of small and medium-sized watershed will be an important part of hydrological m onitoring.Hydrological patr ol survey is an im portant part of hydrological test method innovation.It is pr oposed that the hydrologi cal patrol survey should be developed in s mall and m edium-sized watershed,and the important sites should be supplemented with the necessary management mode of patrol and detention,which will provide a scient ific basis for the new m onitoring model of hydrological monitoring.