VEN DA N O VA III R EP O W ER IN G P R O JECT P rojectm anager S ingapore 11 N ovem ber2016
M A IN S T A KEHO L DER S Client EDP -EnergiasdeP ortugal Engineering EDP -EnergiasdeP ortugal Construction w orks M S F/M ota-engil/s om ague/s piebatignoles Equipm entsupplier VoithHydro/S iem ens S upervision FAS E/Gibb andt abique O T HER S T A KEHO L DER S S ingapore 11 N ovem ber2016
O VER VIEW P urpose U nderground hydropow erplantdesigned to increasetheelectricgenerationand storagecapacity throughtheuse of2 existingreservoirslocated inthenorthw esternregionofp ortugal,anenvironm entaland socialsensitiveregion duetotheneighbouringp eneda-gerêsn ationalp arkand theagriculturalland uses. Key Figures 2 x 378 M W pum p-turbinevariablespeed units 2 x 100 m 3/sflow capacity 420 m ratedhead 9 Km tunnelinglength 1 m ilionm 3 excavated volum e 6 yearsconstruction S ingapore 11 N ovem ber2016
S CHEM AT IC L AYO U T U pstream surge tank 400 m W aterintake Dow nstream surge tank S andtrapstructure O utletstructure 1,5km P ow erhousecavern 3 km S ingapore 11 N ovem ber2016
IN T A KE A N D O U T L ET U pstream surge tank O utlet S tructure Dow nstream surge tank 400 m S andtrapstructure W aterintake 1,5km P ow erhousecavern 3 km S ingapore 11 N ovem ber2016
Water Intake Outlet Structure 12 m 12 m S ingapore 11 N ovem ber2016
HYDR A U L IC T U N N EL S U pstream surge tank Headrace tunnel 400 m W aterintake Dow nstream surge tank O utletstructure T ailrace tunnel 1, 5km S andtrapstructure P ow erhousecavern 3 km
HYDR A U L IC T U N N EL S L arge diam eter (12 m ) for unlined tunnels (shotcrete + rockbolts) and high design pressures(m ax.50 bar) M ainfeatures Fullfacedrillandblastexcavation S ystem atic hydrogeologicalsurvey/treatm ent in theexcavationface 12 m Groundw ater m onitoring plan involving land ow ners: 270 m onitoringpointsover10 years Groundw aterm onitoring points U nderground hydrogeologicalsurvey
S P ECIA L S T R U CT U R ES U pstream S urget ank 400 m Dow nstream surge tank S andtrap S tructure W aterintake O utletstructure 1, 5km P ow erhousecavern 3 km
M ains haft U nusuallayout ConnectionS hafts O penairexpansioncham ber Concretelined m ainshaft(13 x 80 m ) T w inunlined connectionshafts(raiseboring 5, 40 m x 360 m ) 360 m M ainfeatures P rotection of the turbines against w ater ham m er 78 m Expansion Cham ber Upstream Surge Tank 13 m ExpansionCham ber(view from thetop) 13 m M ains haft(view from thebottom ) L ow ercham ber
Sandtrap Structure R etain rock debrisin the flow to protect the turbinesofitsabrasion M ainfeatures O versized layout 22, 5 m excavation diam eter 20 m diam eterafterconcretelining T ransition to pow erhouse through an inclined steellined branchat45º 22, 5m 22, 5m 100 m
Film eces dáerro
PO W ER HO U S E C AVER N U pstream surge tank 400 m W aterintake Dow nstream surge tank S andtrapstructure O utletstructure 1, 5km P ow erhouse Cavern 3 km
PO W ER HO U S E C AVER N M ainfeatures 2 contiguouscham bersfortheturbinesandtransform ers 100 x 60 x 27 m units cham bersize R oofarchw ithpassivesupport(shotcrete+ rockbolts) P re-stressed anchoredbeam ssupporting2 x 280 toncranes 32 m ulti-pointrodextensom eters U nits Cham ber 27m 60 m T ransform ers Cham ber T ailracetunnel
FIN A L R EM VEN DA N O VA A R KS IIIR EP O W ER IN G P R O JECT : Hasgeneration capacity sim ilarto anuclearplant,how everprovided by an underground pow erplant that takesadvantage ofrenew able resources(w ater + w ind) and boosts cleanenergy usage(pum ped storage) R equired unusualdesign solutionsand com plex construction challengesdue to the distinctivefeaturesoftheproject Isadem onstration that developm ent,environm ent and socialconcernsare com patible w ithunderground projects,eveninsensitiveregions
The first rule of sustainability is to be aligned with natural forces. P aulhaw ken T hankyou foryourlistening! m anuelalberto.oliveira@ edp.pt w w w.edp.pt