水库防洪兴利问题理论及方法的应用研究

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1、天津大学博士学位论文水库防洪兴利问题理论及方法的应用研究姓名：吴中元申请学位级别：博士专业：大系统理论指导教师：李光泉20021201ABSTRACTReservoir，comingintoexistenceasasimplexengineeringmeansoffloodpreventionattheendof19“century,hadgraduallyevolvedintothemainbodyoffloodpreventionsystemundertakingcomplextaskssuchaspreventingflood、harnes

2、singwaterlogging、supplyingwater、generatingpower、irrigatingandtransportingbythebeginningof20⋯centurySincel950s，asaconsequenceofthebirthanddevelopmentofsystematicengineering、GIS、remotesensingtechnology、computertechnologyandcommunicationtechnology,non-engineeringmeansoffloodprev

3、entionacquireditsownconceptpurportingto(a)transmitthehydrometeorologicaldatacollectedbyremotesensingtOattemperingcentertoprocessthroughsatellites、radarsandcomputers：(b)accuratelyforecastfloodandsuchrelevantcharacteristicsasquantityofflood、sizeandpositionoffloodpeak、lastingtim

4、eofflood、highestwater1evelinkeystations；(c)chosetheplanofdischargingfloodthatcouldsatisfythepolicy-makerandanalyzeronthebasisofraining、floodandengineering，andcarryouttheattemperingplan；(d)estimatethedangerinlowerreachesofriverandissuealertstothefloodedareaintimetohelpretreata

5、ndsalvage．thuslOSSwouldbereducedtothemostpossiblylowestdegree．Themeaning，generallyspeaking，liesinthat：themoreaccurate、earlierthefloodforecastiS．themoreidealtheattemperingplanis，thefasterattemperingplanischosen，andtheshorterdecision—makingprocessiS．theleSSthe10SSprobablycaused

6、byfloodwillbe．Thisliteratureexpatiatesthefollowing：(1)AlongwiththeadoptionofITtechnology，considerablenumbersofhydrological、mathematical、physicalmodelshavebeensuggestedwithdifferentcomplexitycontainingfromafeWparameterstomorethanamountofones．0nthebasisoftheabovementionedmodel，

7、thisPaDerdefinesdrainageareaasalinearreservoirTherefore．theformulaofwaterquantityequilibriumandsluicing—dischargingCallbeexpressedas：dS(t)／dt=P(t)一E(t)一Q(t)=R(t)一Q(t)andS(t)2KQ(t)，intheformula，S(t)referstotheprocessofsluicinginaspecificdrainagearea，P(t)theprocessofraining，E(t

8、)theprocessofvaporizing，Q(t)theprocessofwater-running，R(t)theeffecti