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21Vol.2No.120033JournalofYanglingVocational&TechnicalCollegeMar.2003:2002211222:(19682),,,,,,(,712100):,,:;:TV13:B:167129131(2003)0120036204CalculationofOutfallPressureandWaterCarryingCapacityofHydraulicTunnelunderPressureZHANGChun2juan,ZHANGDi,SHENYong2kang,LIURu2bo(YanglingVocationalandTechnicalCollege,Yangling,Shaanxi712100)Abstract:Thehydrauliccalculationofpressuretunnelisaverycomplexhydraulicsissue.Combinedwiththepipeflowcalculationformula,thispaperintroducedcalculationmethodsofoutfallpressureandwatercarryingcapacityofhydraulicpressuretunnelwithsomeexamples.Keywords:pressuretunnel;hydrauliccalculation1,,:,,;,22.12.1.1.,,,02.1.2:10();0()1,00,1122:0+1+22g=2222g+hwP1=h+2222g+hw-22g(1)©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.P1,m;h,m;,m/s;2,m/s;hw,m1122,hf,hj,:hw=hf+hjhj:hj=(A2A1-1)2222g=(-2)22g,A1,m2;A2,m2;=2=1.0,(1):P1=h+222g+(-2)22g-22g=h+22g-2g=h-2g(-2)(2),V2=0,P1=h;V20,VV2,V-V20,P1h,,;,,,2.22.2.10,,,,,,,,()hP=h,,,0.50.85,,(H0=hP)2.2.23,,,3.1,:Q=A2gH0(3)Q,m3/s;A,m2;H00,H0=H+V022g,m;H,m;,=1+il1d1(AAi)2+i(AAi)2;li,di,Ai,ii,,;i(Ho-hp),:Q=A2g(Ho-hp)(4)hp,m;3.2:Q=A2gZo(5)=1ilidi(AAi)2+i(AAi)2;(6)(20),Z0=Z+0022g-0222g,Z,m;(20),Z0=Z+0022g,m;42,6m6m,4m4m,6m,8m,d=4.0m,n=0.014,60m10m,3.2m4m()6m,3m3.2m(),,,2,:(1)1:6m6m,A1=6731:©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.6=36m2,1=46=24m,R1=A11=3624=1.5m,d1=(4A1)1/2=(4363.14)1/2=6.772m:4m4m,A2=44=16m2,2=44=16m,R2=A2X2=1616=1m,d2=(4A3)1/2=(4163.14)1/24.515mR=R1+R22=1.5+12=1.25m,C=1nR1/6=10.0141.251/6+74.135m1/2/s,1=8gC2=88.974.1352=0.01432:4m4m,A1=16m2,R1=1m,d1=4.515m:d2=4m,A2=d24=3.14424=12.56m2,R2=d4=44=1mR=R1+R22=1+12=1m,C=1nR1/6=10.01411/6=71.429m1/2/s2=8gC2=89.871.4292=0.015432d=4m,R=1m,C=71.429m1/2/s,3=0.01544:d1=4m,R1=1m;:3.2m4m,A2=3.24=12.8m2,2=2(3.2+4)=14.4m,R2=A22=12.814.4=0.889m,d2=(4A2)1/2=(412.83.14)1/2=4.038mR=R1+R22=1+0.8892=0.945m,C=1nR1/6=10.0140.9451/6=70.758m1/2/s4=8gC2=89.870.7582=0.01575:3.2m4m,R1=0.889m,d1=4.038m:3m3.2m,A2=33.2=9.6m2,2=2(3+3.2)=12.4m,R2=A22=9.612.4=0.774m,d2=(4A2)1/2=(49.63.14)1/2=3.497R=R1+R22=0.889+0.7742=0.832m,C=1nR1/6=10.0140.8321/6=69.272m1/2/s5=8gC2=89.869.2722=0.0163(2)1832©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.0.1,20.330.0540.15:A1=12.8m2,d1=4.038m;:A2=9.6m2,d2=3.497m5tan2=12(d1-d2)I=12(4.038-3.497)6=0.045,=5.2,10,K1=0.4,A2A1=0.75,K2=0.18,5=0.40.18=0.072,,,,5=0.0860.3(3)(6)A=9.6m2;d2A1:d1=6.772+4.5152=5.644m,A1=36+162=26m2;,:d2=4.258m,A2=14.28m2;:d3=4m,A3P=12.56m2;:d4=4.019m,A4=12.68m2;:d5=3.768m,A5=11.2m2ilidi(AAi)2=0.014365.644(9.626)2+0.0154(84.258(9.614.28)2+604(9.612.56)2+0.0157104.019(9.612.68)2+0.016363.768(9.611.2)2=0.1916i(AA2)2=0.1(9.626)2+0.3(9.616)2+0.05(9.614.28)2+0.1(9.612.68)2+0.08(9.611.2)2+0.3=0.5603=11+0.1916+0.5603=0.756(4)hp,,H0=100+40=60mhp=h=0.8h=0.83.2=2.56m(5)(4)QQ=A2g(H0+hp)=0.7569.629.8(60+2.56)=243.5m3/s5,,,:[1].()[M].:,1993.[2].[M].:,1990.[3].[M].:,1980.931:©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.
本文标题:水工有压隧洞出口断面压强及输水能力的计算
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