Page 120 - 《水资源与水工程学报》2023年第3期
P. 120
!34 " ! 3 # & ' ( ) & * + , - Vol.34No.3
2023 $ 6 % JournalofWaterResources&WaterEngineering Jun.,2023
DOI:10.11705/j.issn.1672-643X.2023.03.14
É2®¯ÊgËÌ2ÌͤÎÏA]ÐDHeef
1,2
1,2
1,2
?' , 7 , S , 1,2
(1. .8 NVZ[ÚWa!"#$nop, 300350;2. .8 -,Z[8\, 300350)
< =: <ñNýÚÕc0ï&zóÆ#*, ñNýÚÕc¡&, -G“ N-ÛU =Û o” ÏL
¥ (L¥mh, %SñNýÚÕc=ÛN-#ouzÛ:«¹, ¡4#°Á3HÐÑ。åÑ9.N-
#rè、 Û±Ê˵N-®µ-GñNýÚÕc=ÛN-ÛU'´µ; 7SÒmh£¤
s1hR、 Ù、 !À0#^E÷=ÛN-#ouÛ:zÇÈ, ¼ó±4#ª«。'¿Å:
ñìªs1hRz±., =ÛN-#ouÊ4ôW¾, 8=ÛN-#ï|zóÆ#±.。o
Ù´L 0.02 ±.V 0.30 «, =ÛN-#ï|Æz#²Öùú4u。Ù´L 0.02 ±óV 0.10 «, Æ
#²ÖÊ4 85% ~97%; Ù´L 0.20 ±.V 0.30 «, Æ#²ÖÊ4 0.1% ~1.0%, ÷´Y5½。
.íñNýÚÕc, 0¿Ô!À«, ï&zÆ#¿., {íÕcñN0«Y&Õ0«ï&zóÆ
#²Ö¿.。
>?@: =ÛN-#; oÛ:; óÆ#; ÏL¥; ñNýÚÕc
ABCDE:TV312 FGHIJ:A FKLE:1672643X(2023)03011607
Propagationlawofhydraulicvibrationofpipelinesinsurrounding
rockofpumpedstoragepowerstation
1,2
1,2
1,2
WANGHaijun ,CHENBo ,YANGXiuwei ,LIANJijian 1,2
(1.StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,TianjinUniversity,Tianjin300350,China;
2.SchoolofCivilEngineering,TianjinUniversity,Tianjin300350,China)
Abstract:Inordertoinvestigatethegroundvibrationcausedbytheoperationofpumpedstoragepower
stations,takingapumpedstoragepowerstationasanexample,weestablishedafiniteelement-infinite
elementcouplingmodelof “hydraulicload-pipe-surroundingrock”tostudythepropagationlawofhy
draulicvibrationofthepipelineinthesurroundingrock ,soastoprovidesometechnicalsupportforthe
vibrationreduction.Firstly,basedonhydraulicvibrationtheory,transfermatrixmethodandhydraulic
impedancemethod ,themethodforcalculatingthehydraulicfluctuatingloadofthepumpedstoragepower
stationpipelineisestablished.Then ,thecouplingmodelisusedtosystematicallyanalyzetheinfluenceof
thechangesofelasticmodulus,dampingandunitoperatingstateonthepropagationofhydraulicvibration
ofpipelineinthesurroundingrock ,andthedampingmeasuresareproposed.Thecalculationresultsshow
thatwiththeincreaseoftheelasticmodulusofrock ,theattenuationrateofhydraulicvibrationofpipeline
inthesurroundingrockdecreasedandthegroundvibrationcausedbyhydraulicvibrationofpipelinein
creased.Whenthedampingratioofthesurroundingrockincreasedintherangeof0.02to0.30 ,thein
tensityofthesurfacevibrationcausedbythehydraulicvibrationofpipelinekeptdecreasing.Whenthe
dampingratioincreasedfrom0.02to0.10 ,thesurfacevibrationintensitydecreasedby85% -97%;
whenthedampingratioincreasedfrom0.20to0.30,thesurfacevibrationintensitydecreasedonlyby
0.1% to1.0%,whichchangedrelativelylittle.Forthispumpedstoragepowerstation,whenmoreunits
areinoperation,theresultinggroundvibrationisgreaterandthegroundvibrationintensityduringpum
!"#$:20230111; %$:20230310
'()*: !"#$%&'(5;(2016YFC0401902); Ê67289:5;(18JCYBJC22300)
+,-.: útÑ(1978—), ?, ±züEB, CD, EF, %S´³¡NVNÕZ[。
{|+,: ° º(2000—), ?, Þä°ðB, ?D%SG, %S´³¡NVNÕZ[。