Our Methods

Our methods

Vertical drains

Deep wells

Return dewatering

Horizontal drainage

Well pointing is of great importance during the execution of construction works. When carrying out construction projects, it is important to be able to carry out the work in a dry construction pit. In these cases, well pointing is usually necessary.

Every project requires specific dewatering. We rely on various methods for this and we have an extensive machine park. In addition to this, we carry out a comprehensive study via computer simulation to estimate the risk of each dewatering technique in that specific situation, and we can provide or recommend appropriate safety measures.

Well pointing using vertical drains is a technique in which vertical drains are drilled into the ground manually or mechanically around the construction site. They get connected via a common suction line to a piston pump that pumps up the incoming groundwater. This technique is mainly used for the drainage of construction pits or sewerage trenches to a depth of four meters below ground level.
This dewatering method avoids the bursting of excavation pits and can easily be combined or expanded with other methods.

For this method, a hole is bored at a depth of twenty to thirty meters below ground level. A PVC filter is built into the well hole and is poured over with filter gravel. An underwater pump is placed in the well hole.
Dewatering with deep wells is a method suitable for achieving deep groundwater reductions at large construction pits such as, for instance, underground car parks, tunnels or construction projects in an urban environment. This method is suitable for depths from 4 meters and can normally be applied to unlimited depth.

Because dewatering influence is greater with this method, the risks on the environment are also greater. That is why we always carry out a thorough preliminary investigation into the risks in order to take the necessary protection measures in time.

Deeps wells can be performed in combination with return dewatering to minimise the risk of damage to neighbouring buildings.

This method is necessary in some cases to compensate for the possible unfavorable consequences of groundwater reduction. Well pointing whereby a substantial groundwater reduction is achieved can cause considerable settlements in subsoil that is not strong enough. This can cause damage to surrounding buildings. In such cases and in order to prevent those risks, return dewatering is often used.
A portion of the pumped-up groundwater is infiltrated back into the subsurface via the so-called return wells. Groundwater level thus remains at its natural level in the at-risk zone. There are no soil settlements and consequently no damage can occur.

With this well pointing method, a drainage pipe is milled into the subsurface using a deep-draining machine. This drain is then connected to a piston pump via a flexible blind suction line. Through this method, incoming groundwater is pumped away.
This method is a great solution for pumping pipe slots in open fields, such as pipelines. It is most suitable for depths going up to 4 to 5 meters or in case of impermeable clay layers in the soil.

Verticale Filters

Dieptebronnen

Horizontale Drainage

Jaar/AnnéeKlantLocatieProject
2016AclagroBruggeA11
2016Mourik RijkevorselHof van Roey
2016Cordeel MechelenIvarem
2016WyckaertWyckaertRidderstraat
2016Cordeel Boortmeerbeek Maalterie
2016DCAZeleAvermaat
2016SolesiAntwerpenTotal – ROG
2016BesixGentDunant Gardens
2016RomelKortrijk Dam 73
2016HeijmansLubbeekCollector
2016StadsbaderPipaix Bofas
2016FabricomMerelbeke
2016Aclagro GentKronos – sanering
2016Dethier Aalst Zeebergkaai
2016AsweboAalstTunnel R41
2016StadsbaderJemappesSanering Shell
2016ConduterraDoelGeslecht
2016EandisMol
2016Cordeel LembekeLotus
2016BAM ContractorsOordegemvernieuwen van grachten
2016CovestroAntwerpen
2016BAM ContractorsBruggeLijn 51
2016HeijmansSt-NiklaasCollector Ossenhoek
2016Persyn Lessen Deux Acres
2016NidoGentArcelor Mittal
2016FrankiGenvalLes Papeteries II
2016WyckaertKnokke Beau de l’air
2016ExeconTongerenColruyt
2016AudeboAalstErembodegemstraat
2016WegeboNeder-Over-Heembeek B-post
2016AclagroBruggeA11
2016CordeelMechelenIvarem
2016MourikRijkevorselHof van Roey
2016WyckaertAalstRidderstraat
2016CordeelBoortmeerbeekMaalterie
2016DCAZeleAvermaat
2016SolesiAntwerpenTotal – ROG
2016BesixGentDunant Gardens
2016RomelKortrijkDam 73
2016HeijmansLubbeekCollector
2016StadsbaderPipaixBofas
2016FabricomMerelbeke
2016AclagroGentKronos – sanering
2016AsweboAalstTunnel R41
2016BAM ContractorsOordegemvernieuwen van grachten
2016ConduterraDoelGeslecht
2016CovestroAntwerpen
2016PersynLessenDeux Acres
2016BAM ContractorsBruggeLijn 51
2016NidoGentArcelor Mittal
2016AudeboAalstErembodegemstraat
2016WyckaertKnokkeBeau de l’air
2016HeijmansSt-NiklaasCollector Ossenhoek
2016WegeboNeder-Over- HeembeekB-post
2016DethierAalstZeebergkaai
2016FrankiGenvalLes Papeteries II
2016CordeelLembekeLotus
2016ExeconTongerenColruyt
2016EandisMol
2016StadsbaderJemappesSanering Shell
2015CEI DemeyerZwijnaardeTramijn 21/22
2015CordeelWetterenWetteren a/d Schelde
2015HeijmansAntwerpenNieuwe Kade
2015WyckaertNinoveDelhaize
2015VerelstKeerbergenDelhaize
2015StadsbaderAntwerpenDepot De Lijn
2015TRBABaudourSite Belfibres
2015TRBAMoeskroenEstampuis
2015DemocoAntwerpenZoo
2015HeijmansGooikCollector Molenbeek
2015WegeboNeder-over- HeembeekKatoennatie
2015Artes RoegiersAntwerpenHof ter Schelde
2015InterbuildAntwerpenNieuw Zuid
2015OmexomGenkELIA
2015Wegebo Gent Brabantdam
2015BAM ContractorsAalter BeernemAfschaffen van overwegen
2015MolsBilzenRWZI
2015DCASt-Kruis- WinkelCollector
2015LiemaLeuvenJules Persoonsstraat
2015THV HassabouwHasseltStad&huis
2015Van WellenBeverenICT Rubis
2015EraertsRansartRue Charbonnel
2015DSLRouen (FR)Passage Luciline
2015VBGLierBegijnhofstraat
2015Thomas&PironJambesRue d’enhaive
2015THV Besix/LDWMelleStation
2015GabeconAalstVTI Aalst
2015HeijmansLubbeekCollector
2014THV STAMechelenMechelenSpoorbypass
2014BesixAntwerpen5 e havendok
2014Vanhout ProTurnhoutIndustriedijk
2014BesixOostendeEurostation
2014Jacques DelensAnderlechtAbbatoir
2014CariVertusSTEP
2014AclagroKwatrechtDoortocht
2014LamoteKnokkeNatielaan
2014HeijmansGooikCollector Molenbeek
2014TRBARoucourt
2014Jan De NulLedeWZC
2014De CapucienAalstAppartementen
2014MolsTeuvenRWZI
2014HeijmansGentN9-Herinrichting
2014CordeelAntwerpenVOPAK
2014AertssenSchaarbeekCarwash Tuc Rail
2014HeijmansAntwerpenEvonik-Zephyr
2014DCAHolsbeekCollector Wingene
2014WegeboTernatStationsomgeving
2014VBGLierN14-R16
2014HeijmansGentTramlijn 4
2014CordeelGeelUitbreiding ziekenh.
2014CordeelBeverenBrookville
2014DeckxZelzateRenov. RWZI
2014DemocoKetenisseELIA
2014CEI DemeyerMellepoly. Werkpl. Station
2014BPCMeerhoutNIKE
2014DCAScherpenheuvelCollector
2014THV ViabruggeBruggeA11
2013Louis De WaeleMonsStation Mons
2013EiffageRivecourt
2013ConduterraAntwerpenScheldelaan
2013DenysAntwerpenForens/psych ziekenhuis
2013DemocoDiestEzeldijk
2013MBGOostendeBaelskaai
2013BBCAalst32 nieuwbouwapr.
2013GabeconSpyChaussée de Nivelles
2013CosimcoBoortmeerbeekBrouwerij Haacht
2013GabeconBrugge80 appartementen
2013Verstraete & VanheckeLa Hulpe
2013Jan De NulLierGasfabriek
2013EiffageLumbresSTEP
2013WegeboTernatStation
2013DCABornemLuipegem
2013TRBASiraultCollector
2013WillemenMechelenPapenhof
2013ABMTAntwerpenPaleisstraat
2013Jan De NulLiedekerkeAffligemstraat
2013DCADilbeekCollector Neerpedebeek
2013DenysAntwerpenZegel
2013DemocoBrusselChaussée D’anvers
2013InterbuildAntwerpenWZC IGLO
2013HeijmansDiestLeigrachtstraat
2013BetonacHasseltN20-R71
2013THV Soetaert/VerhelstRoeselareOverbrugging
2013TravexploitChievresCollector
2013CasterGenkVennestraat
Jaar/AnnéeKlantLocatieProject
2013DCAKortenakenCollector Hoeleden
2013MBGLonderzeelSVM Clusters
2013CordeelGentAZ-Jan Palfijn
2013StrabagSint-Truiden
2013SogaOostende
2013THV KattendijkdokAntwerpenCadiz
2013EiffageLumbres
2013BBCGentDok Noord
2013GhelamcoGentGhelamco Arena
2013DegrooteOostendeWaterview
2013HensBrechtKattenhoflaan
2013Jan De NulHennuyèresSTEP
2013MBGGentUgent – Cs Ardoyen
2013SogaBredeneZandstraat
2013THV CEIDemeyer/CITBlatonZaventemConnector
2013Bruggeman MaesMechelenClarenhof
2013HooyberghsMortselFruithoflaan
2013Van WellenAntwerpenMeir 77-79
2013AertssenKalloBazeput
2013DCABoechoutSociale woningen
2013DenysAntwerpenOosterweel proefput
2013TRBAPecqRue de Tournai
2013ABBAntwerpenEvonik
2014JanssenLeuvenIMEC
2014WyckaertAntwerpenCadox
2014StrabagMortselOostheem
2014Van WellenLennikScholen van morgen
2014Sud ConstructBrusselRue Rempart des mois
2014ValensLiedekerkeBouwen van tunnel
2014Nys DriesenSchoten38 soc. Woningen
2014BouwcollectiefBerendrechtMonikkenhofstraat
2014DCABoechoutBMT
2014HeijmansGentbruggeN9
2014Sud ConstructSchaarbeekRue Giroud
2014BPCBrusselDockx
2014Van WellenWijnegemKingdom Hall
2014DCABeerseRWZI
2014SogaBornemKlein Mechelen
2014BeernaertsAntwerpenRode Weel
2014PersynGentKennedylaan U2
2014BeernaertsBeringenKattestraat
2014MolsMechelenNeckerspoel
2014GabrielsLedeLeedsesteenweg
2014BeernaertsLommel
2014CrauwelsOlenCité
2014THV Denul/CITBlatonDeurneOndertunneling vliegveld
2015ABMTDeurneDe Lunden
2015CordeelGentRedemptoristen
2015Van LaereKasterleeWZC Lucia
2015CordeelGentPoliklinieken
2015VervoortKesselForstraat
2015BesixGentThe Loop
2015CordeelKortrijkBudalys
2015DemocoAntwerpenZoo
2015Van LaereAntwperenHardenvoort
2015DeckxLommelFabriekstraat
2015BrebuildMerksemBartholomeus
2015BeernaertsGeelWinkelom
2015InterbuildAntwerpenNieuw Zuid
2015WyckaertNinoveDelhaize
2015PersynBrugge
2015HooyberghsMechelenAppartementen
2015HeijmansGentTramlijn
2015BesixNieuwpoortParking havengeul
2015VervoortWijnegemStokerijstraat
2015BrebuildVilvoordeAppartementen
2015WegrosanNil-St- VincentSanering
2015Artes RoegiersAntwerpenNoorderlaan x Ijzerlaan
2015BalzolaZeebruggeFluxys
2015VotquenneAntwerpenZuiderdok
2016InterbuildAntwerpenNieuw ziekenhuis
2016BesixZeebruggeICO-Kaai
2016Artes DepretGentThe Loop
2016DenysKnokkePark en duin
2016Louis De WaeleGentKronos
2016Jan De NulAntwerpenTunnelplaats
2016FrankiGentArcelor Mittal
2016HimpeBruggeBouwput
2016WillemenAnderlechtRue Brogniez
2016Jan De NulJetteSpiegel Kon. Astridplein
2016DegrooteOostendeRes. Queens
2016Louis De WaeleGentNieuwe Molens
2016VervoortBrasschaatBredabaan 133
2016THV ScheldekaaienAntwerpenHerinrichting Scheldekaaien
2016De RoeckAntwerpenSchijnboesems
2016VerelstAntwerpenKloosterstraat 99
2016SoetaertBruggeBevrijdingslaan x N31
2016DCASt-Katelijne- Waver
2016MolsBerchemLandhoofden station
2016BrebuildMerksemBartholomeus
2016CordeelAnderlechtNautilus
2016SoetaertAalstStuwcomplex
Jaar KlantLocatieProject
2014HeijmansTernat
2014CVRBeringenTerreinen CVR
2014HeijmansSt-NiklaasKMO zone
2014DCARijkevorsel
2014Artes RoegiersHalleZenneproject
2014AertssenAntwerpenPraxair
2014GabeconZottegemGodveerdegemstr.
2014CEI DemeyerAntwerpenTotal-OPTARA
2014GabeconZedelgemWZC
2014Antwerpse bouwwerkenAntwerpenEvonik
2015Thomas & PironWoluwe St-LambertProject Ile D’Or
2015HeijmansSt-NiklaasN70/N16
2015Nys-DriesenVeerle LaakdalRes. Leyndecker
2015BAM ContractorsHasseltTractiewerkplaats
2015Jan De NulBruggeSTEVIN-project
2015HeijmansOlenEffluentleiding
2015Bekaert building companyDeinzeRekkelinge II
2015VBGBeverenHazop
2016Jan De NulBruggeSTEVIN project
2016Artes DepretGentThe Loop
2016ACH buildNederhemappartementen
2016CosimcoMachelenLidl
2016WegeboNeder-Over- Heembeek
2016Prisma ProjectsBruggeTheresianenhof
2016THV Besix/Jacques DelensAnderlechtCity docks
2016Artes DepretKnokkeZeno
2016ZenoZeleWijnveld