畢業(yè)設計--鄉(xiāng)鎮(zhèn)農田水利工程設計

1、平江縣大坪鄉(xiāng)、虹橋鎮(zhèn)等兩個鄉(xiāng)鎮(zhèn)農田水利工程設計平江縣大坪鄉(xiāng)、虹橋鎮(zhèn)等兩個鄉(xiāng)鎮(zhèn)農田水利工程設計目錄1前言................................................................................................................................21.1設計的必要性...............................

2、...............................................................................21.2設計目標......................................................................................................................21.3國內外農田節(jié)水灌溉現(xiàn)狀

3、..........................................................................................22綜合說明........................................................................................................................42.1

4、灌區(qū)概況......................................................................................................................42.2自然條件..........................................................................................

5、............................42.2.1地形地貌..................................................................................................................42.2.2氣象............................................................

6、..............................................................42.2.3土壤..........................................................................................................................42.2.4植被....................

7、......................................................................................................42.2.5水文與水文地質......................................................................................................42.

8、2.6工程地質..................................................................................................................52.3灌區(qū)存在問題.........................................................................................

9、....................53項目區(qū)水資源供需平衡分析........................................................................................53.1灌溉水源..........................................................................................

10、...........................53.2供水量分析.................................................................................................................53.2.1大坪鄉(xiāng)灌區(qū)............................................................

11、..................................................63.2.2虹橋鎮(zhèn)灌區(qū)..............................................................................................................63.3灌溉需水量預測......................................

12、...................................................................73.4水資源供需平衡分析.................................................................................................83.4.1原則與方法................................

13、..............................................................................83.4.2水資源平衡計算......................................................................................................84灌溉與排水工程設計................

14、....................................................................................94.1灌溉渠道.....................................................................................................................91鄉(xiāng)鎮(zhèn)農田水利工程設

15、計鄉(xiāng)鎮(zhèn)農田水利工程設計摘要：本設計為灌溉與排水工程設計，本文主要是對湖南省平江縣大坪鄉(xiāng)、虹橋鎮(zhèn)灌區(qū)渠道灌溉改造，通過對灌區(qū)的分析供水量和預測需水量，最后進行供水需水平衡分析，了解區(qū)內斗級渠道與灌排渠道采用續(xù)灌的灌溉方式，農級渠道采用輪灌方式。設計渠道與排水道縱斷面，縱斷面設計應根據沿溝的地形條件，排水溝水位推算結果和橫斷面設計成果，進行水位銜接，保證沿程排水暢通，并在此基礎上繪制排水溝道的縱斷面圖。關鍵詞：渠道灌溉；水力計算；水平衡分析

16、；節(jié)水建筑物TheDesignofWaterConservancyIrrigationProjectsinTwoTownssuchasDapingTownshipHongqiaoTownPingjiangCounty(ientScience&TechnologyCollegeofHunanAgriculturalUniversityChangsha410128China)Abstract:Thisdesignismainlyfirrig

17、ationdrainageengineeringdesignthispaperismainlyinPingjiangCountyHunanProvinceDapingTownshipHongqiaoTownirrigationchannelirrigationtransfmationthroughtheanalysisofwatersupplyfecastwaterdemfinallywatersupplywaterbalanceana

18、lysistoundersttheareaBucketlevelchannelsirrigationdrainagechannelsusingcontinuedirrigationirrigationmethodsagriculturalgradechannelsusingwheelirrigation.Designchanneldrainagechannellongitudinalsectionlongitudinalprofiled

19、esignshouldbebasedontheterrainalongtheditchconditionsdrainswaterlevelcalculationresultscrosssectionaldesignresultsthewaterlevelconvergencetoensuresmoothdrainagealongthewayonthisbasistodrawthedrainagechannelProfileview.Ke