Application Research On Water Backwards Method In Zhangshu Hydrologic Station

ZhangShu hydrological station located in the gan river lower reaches,ZhangShu city in JiangXi province area on the right bank.ZhangShu stand was built in December 1930,for the gan river downstream station(first kind station),control river basin area of 71324 ? 2.Located in Poyang lake region gan river lower reaches,east longitude 115 ° 32 ',north latitude 28 ° 04 ',is located in the upstream JiangXi Zhangshu railway bridge 150 meters,the right bank of the river.Stations only water level observation program,(the water level in 1942,1943,1949,3 years stopped;increase precipitation in 1936,from 1940 to 1943 and 1949;stop test in 1965 to increase evaporation,stop test in 1980;in 1950,increase traffic,stop test in 1954,1998,1998,increase the rate of suspended load sediment test.As a national basic station,on the hydrological regionalization is divided into ? area;first kind station test accuracy of flow.first kind station of suspended load sediment test precision station),ZhangShu station is now standing as a national important hydrological station,test items include: water level,rainfall,flow and suspended load sediment,water quality.The test accuracy of first kind station level.Fengcheng gage station management also springs,small port,port and other 22 gage,55 remote precipitation station.This article looks at twelve years from 2003 to 2014,the ZhangShu analysis of hydrologic relationship between water flow,water level ward was explored to water flow counterclockwise noose curve relationship into water flow in single value curve relationship in hydrologic application and research of ZhangShu.The main content of this paper are as follows:1,use from 2003 to 2012,ten years measured data of large section of the original analysis of hydrologic section of ZhangShu,hydrologic water flow relationship factors determine ZhangShu;2,the use of twelve years from 2003 to 2014,the measured traffic sources on all previous water flow is counter-clockwise in-situ test.consolidation noose curve relationship with flood hydrology factors information,mainly in all previous flood and flood volume and total;3,the use of twelve years from 2003 to 2014,the raw data of the measured water level,check calculate all previous water flow is counter-clockwise noose curve relationship between the measured flow rate corresponding to the water level,and back in time,using backward time level alignment with the original time flow,to conform to the requirements of the legal line temporary curve;4,after reasonable alignment,by also the hydrographic office procedures,provided by the production DAT file,and then use the program will DAT file into Z1 G,reoccupy southern to reorganize,and calculate the period of the flood volume at the same time;5,through to the water level method before and after the comparison of the actual income,determine the feasibility of this method.The method to determine the feasible,ZhangShu hydrological stations will not need to measure each flood peak valley process,the stationing,only need to press the flood water level control in the highest and lowest water flow,using the method of water level traffic data of cataloguing work.