Instrumentation for measuring and monitoring geotechnical and geomechanical parameters in tunnels,

caverns and underground works.

SISGEO design and manufacture a comprehensive range of equipment to suit specific applications and engineering requirements.

SISGEO will be pleased to assist and provide further information to select equipment.

T U N N E L M O N I T O R I N GT U N N E L M O N I T O R I N G

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InstrumentationApplication

Borehole extensometerRock movements around tunnel

Pressure cellPressure measurementin tunnel linings

Convergence tape extensometerMovements of tunnel lining

Increx mobile extensometerStrains and deformationsaround tunnel

Anchor load cellMonitoring of anchor loads

Embedment strain-gaugeConcrete strain measurements(shotcrete)

Electrical piezometerControl of pore-water pressure

Smach accelerographVibration measurement duringexcavation

InstrumentationApplication

Concrete stress cellMeasurement of concrete stress changes

Measuring anchorStress distribution of anchors

Pressure cellMeasurements of rock pressure on lining

Convergence tape extensometerMovements of tunnel lining

Increx mobile extensometerStrains and deformationsaround tunnel

Anchor load cellMonitoring of anchor loads

Piezo-settlement columnWater level and settlement control

Smach accelerographVibration monitoring duringexcavation

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Smach strong motion accelerograph

Planning a performance monitoring programmein an essential component of succesfull tunnelconstruction. Tunnel monitoring is reccomended todetermine the behaviour of the surrounding soilduring excavation, to ensure the stability and thesafety of the structure.

Criteria of instrument selection:

•Reliability of measurements

(resolution,accuracy and repeatability)

•Long-term stability and instrument longevity

•Easy of automation for real time monitoring

•Efficient data management

TUNNEL MONITORING INSTRUMENTATION

Well-planned Monitoring Program

Developing Stage

Determine the purpose of instrumentationSelect the parameters to monitor

Define factors which influence measurementsPrepare budget

Select instruments and their locationsPrepare specifications and instrument procurements

Plan instrument installation and maintenancePlan data management and reporting

Execution Stage

Procure and install instrumentsMaintain instruments and readouts

Collect measurements and manage dataCompare data with design values

Interpret data Plan a corrective instrument implementation

Convergence tape extensometer Concrete hydraulic stress cells Borehole extensometer

Electrical piezometers

Pressure cells

Anchor load cells Vibrating wire strain-gauges

Inclinometer probe and readout

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InstrumentationApplication

Borehole extensometerRock movementsaround tunnel

Convergence tape extensometerMovements of tunnel lining

Increx mobile extensometerStrains and deformationsaround tunnel

Piezo-settlement columnWater level and settlementcontrol

Settlement systemMonitoring of groundsettlement

Surface clinometerStructural inclinationmovement

Settlement columnSoil settlement above tunnel

Smach accelerographDynamic measurementsduring excavation

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Starin-gauges on steel lining

Pressure cell and convergence bolt

D422M level gauge

AUTOMATIC MONITORING SYSTEM

The performance offered by the Automatic Data Acquisition System is:

• On-line management of a network of several hundred instruments• Collection of a large quantity of data• Checking of the design hypotheses• Operating support during the tunnel construction• Data analysis and evaluation of the tunnel safety

REMOTE DATA CENTERoff-line monitoring

PPEERRSSOONNAALL CCOOMMPPUUTTEERR

Data Management Software

PHONEMODEM

RECORDINGCARTDRIDGE PLOTTER

• Data Bank• Special processing

• Data validation• Graph presentation

PHONEMODEM

PRINTERPLOTTER

PPEERRSSOONNAALL CCOOMMPPUUTTEERR

Data Management Software

• Data acquisition

• Self diagnosis

• Processing on-line

• Data recording

• Alarms

• Display

• Printing

MONITORINGSYSTEM

ADK-10 DATALOGGEROperating Software

Sisgeo’s ADK-10 is a powerful and versatile multifunction datalogger which allows to manage alarge instrument network.

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Via Morandi, 2720090 Segrate - MI - Italy

Tel. +39 02 2132728Fax +39 02 26923252

E-mail: info@sisgeo.comhttp://www.sisgeo.com

PROJECT REFERENCE

TORINO - BARDONECCHIA Motorway - ItalyMOTTARONE Motorway Tunnel - ItalyCELS Motorway Tunnel - ItalyM.T.R. - Metro Naples - ItalyVILLETTA - Motorway Tunnel - ItalyTORINO - SAVONA Motorway - ItalyELMALIK Motorway Tunnel - TurkeyGILO - Motorway Tunnel - IsraelAOSTA - S. BERNARDO Motorway - ItalyEL SALAAM SYPHON UNDER SUEZ CANAL - EgypthS. CROCE Railway Tunnel - ItalyFREJUS Motorway Tunnel - ItalyM.R.T. - Metro Rome - ItalyTAIPEI M.R.T. - TaiwanUNDERGROUND PARKING in Milan - ItalyCOZZO della GUARDIA Hydraulic Reservoir - ItalyPORCE II HYDROELECTRIC PROJECT - ColombiaT.A.V. Rome-Naples - Colli Albani Railways tunnel - Italy

PORT FOUAD PROJECT - EgypthMATEFER Railway Tunnel - ItalyHighway Zagreb - Rejka - Gorsky Kotar Tunnel - CroaziaUNDERGROUND RAILWAYS CROSSING of Genova - ItalyKARUN III - Diversion Tunnel - IranO.S.E. Railway Tunnel Ano Liossia - GreeceTEMBI RAILWAY TUNNEL - GreeceT.A.V. MILANO - GENOVA - ItalyUNDERGROUND RAILWAYS Seoul - KoreaANCONA - BARI - S. Vito Railways Tunnel - ItalyS. PELLEGRINO TERME - Motorway Tunnel - ItalyGIUSTINO - Hydraulic Reservoir - ItalyPETRALIA - Underground mine - ItalyCASECNAN PROJECT - PhilippineREALMONTE - Underground mine - ItalyKALI GANDAKI H.P. - NepalMRTA BANGKOK - ThailandCONTUY MEDIO - Venezuela