mining and geotechnical servicesgeotecspa.com/documents/brochures/brochure_mining... · 2 | mining...

OH

SAS 18001

ISO 14001

ISO 9001:2000

MINING AND GEOTECHNICAL SERVICES

Mining and Geotechnical services

Soil investigations1

S O I L I N V E S T I G A T I O N S & L A N D S U R V E Y I N G

Geotec S.p.A. carries out geotechnical investigations and can provide a wide range of services including:

Traditional methods:Core drilling Rotary drilling and destructive drilling with the direct circulation of fluids/air.Rotary drilling and destructive drilling with reverse circulation of fluids/air.

Geotechnical surveys and hydraulic tests:Standard Penetration Test (SPT)Field Vane Test (FVT)Permeability testing Lefranc, LugeonDilatometric Rock tests (DRT) Pressuremeter testing Collection of soil samples Hydraulic fracturing Borehole test pumping DAC test

Wire line method (deep drilling):Rotary drilling and core drilling (slim hole), to a depth of 1500 m.Rotary drilling and destructive drilling.

Geotechnical surveys and hydraulic tests:Permeability testing LugeonDilatometric Rock tests (DRT) Pressuremeter testing Collection of soil samples Hydraulic fracturing DAC test

During drilling Geotec S.p.A. can monitor/measure the angle and the direction of drilling using an inclinometer, in this way data is guaranteed and parameters indicated by the client are observed.Geotec S.p.A. has the technical ability and the organizational skills to guarantee geotechnical investigations even in difficult inaccessible areas.

2 | Mining and Geotechnical services Geotec S.p.A.

S O I L I N V E S T I G A T I O N S & L A N D S U R V E Y I N G

Mining Investigations 1

Geotec S.p.A. can provide geological and geotechnical surveys using the traditio-nal rotary coring method or the wire line technique. Geological surveys in mining investigations involve drilling into bedrock, extrac-ting core samples and carrying out the mineralogical and petrographic analysis of the extracted core samples.

Two types of methods can be used:

Destructive drilling, using reverse circulation drilling (DTHH RC and air core) where cuttings are brought up through the hammer, special drill rods and rotary head. The cuttings are then extracted and placed in drill core boxes or plastic trays.

In 2012, Geotec S.p.A. tookover SO.RI.GE, a long standing company based in Parma specialized in deep slim hole drilling and mining investigations. With regard to mining investigations, SO.RI.GE carried out a number of important projects including:

Geological and geotechnical surveys and coring in Furtei – Cagliari for S.G.M. SARDINIA GOLD MINIG. 2008 – Gold mining

Drilling Agreement – Project No: ZC-01510 - Lead and Zinc mining for ZINIFEX AUSTRALIA LIMITED – 2007

Campagna de sondages puor la reconnaisance des potentialités minérales sur les permis situés dans la region NW de Tunisie, site de Bou Jabeur – Lead and Zinc mining for HIGH MARSCH HOLDING TUNISIA (HMHT) - 2008


The optical televiewer log (OPTV) generates a 360° image of borehole or well walls with a resolution of millimetres.

With the oriented images you can carry out the following analysis:Detailed geomechanical analysis of the rock (orientation,

geometry and real conditions of fractures, RQD)Analysis of concretePaleoclimatical analysisArcheological analysisInspection of piezometers and wells.

The optical televiewer (OPTV) performs both in dry and clear water conditions up to temperatures of 50° C and pressures of 200 bar, it gives information about dip and azimuth of the borehole.

Optical televiewer

The acoustic televiewer (BHTV) generates an image of borehole or well walls transmittingultrasound impulses.

With the oriented images you can carry out the following analysis:Detailed geomechanical analysis of the rock (orientation,

geometry and real conditions of fractures, RQD)High resolution determination of the diameter of the

boreholeIndications to the tensional state of the rock massAnalysis of cementing of a pipe or poleAnalysis of concretePaleoclimatical analysisArcheological analysisInspection of piezometers and wells.

The acoustic scanner (BHTV) needs wet conditions (presence of fluid) inside the borehole, it operates with temperatures up to 70°C and pressure of 200 bar. It gives information about dip direction and azimuth of the borehole.

Acoustic televiewer

The mechanical caliper (CM) measures the diameter of the borehole or well.

It registers the following information:CavitiesTensional state of rocksChanging lithologiesHydrogeologyState of well and chasings.

The mechanical caliper (CM) operates with orwithout water inside the borehole.

Caloper Log (CM)

This logging probe (Mn) moves constantly up and down an impeller flowmeter to measure vertical fluid movement inside the borehole.Water entries or outlets inside the well or the borehole cause a change in the velocity of the impeller.

This probe finds its application for:Determination of water entry or outlet inside wells or

piezometersDesign of wellsPump tests.

Flowmeter (Mm)

The multiparameter log (TC) measures the physical parameters of fluids.

This are the fields of application:Hydrogeological, geothermic studies in boreholes or wellsQuantification of water entries or outlets in wells or piezome-

tersDesign of wells for the determination of filter sectionsDetermination of anomalies of the geothermic gradientPresence of different fluids inside the well or the boreholeMeasurement of temperature during cementing of casings.

Temperature and conductivity (TC),salt content, oxygen, pH, turbidity


The full wave sonic log (FWS) operates with an acoustic signal propagating in rock formations and can be compared to seismic vertical logs inside boreholes or wells.

The results of this log allow the following analysis:Vp and Vs waves of the investigated medium (rock or concrete)Control of quality of cementing of metal or PVC chasingsInformation about fractures, porosity, elastic properties and

type of crossed medium.

The log needs a fluid inside the borehole and can operate with temperatures up to 70° C and pressures of 200 bar.

Full wave sonic and inspection of cementing (CBL)

The gamma ray log (GR) measures the natural radioactivity of rock formations.

It gives information about:LithologyPresence of shale beds or evaporites inside rock formationspresence of bentonitesedimentary sequencesstratigraphic correlations between boreholes.

The gamma ray log (GR) operates with or without the presence of water.

Gamma ray Log (GR)

The normal resistivity log or spontaneous potential (RS) works in the basis of electrolytic conductivity.

The normal resistivity log gives information about:LithologyPorosity and fissuring in deposits in deepboreholes, wellsQuality of fluids in rock formations.

The log needs the presence of a fluid to operate.

Resistivity normal (16”N-64”N) /spontaneouspotential log

GeoStructural, hydrogeologicand geophysical monitoring,design and installation

Hydrological Monitoring

Field iv application:Monitoring of landslidesMonitoring of rock massesGeotechnical monitoringStructural monitoringMining monitoringMonitoring of open pit and quarriesHydrogeological monitoringGeothermal monitoringEnvironmental monitoringSeismic monitoringControl of drillings.

Geostrutctural MonitoringCollection and automatic or manual storage ofdata for controlling superficial or deep movementsalong rock slopes or earth slopes and ofcivil constructions.› Rotation and dip

SettlementDeformation in rocks, earth and concreteLoad and pressureTension rod and anchoragesStrain and stressTemperature.

Measurements of river and creek discharges, measurement of groundwater table, pore pressure, measurement of physical parameters of fluids.

Measurements with tracers: salt NaCl,fluorescence tracer (uranin), rhodamineautomatic measurements for controllingpumping testscontrol measurements of wellsmeasurements for geothermic exploration

Geophisical Monitoring

Measurements of the vibrations inside the borehole and on the surface with geophones and triaxial accelerometers.The vibrations induced by use of explosives or mechanical machines on architectural constructions and infrastructures (e.g. dams, railway, tunnels) are measured.

Field of application: DemolitionQuarriesTunnels.



Prova Lefranc a carico variabile

Data

Ora inizio

Località

Riferimento

Ditta esecutrice

Committente

Prova

Supervisore Dott. Geol. Emilio Quinto

Geo2

2

14/07/2012

10.00

Ora �ne 10.30

Consorzio MM4

Sondaggio Asta di manovra

Linea Metropolitana M4: Lorenteggio - Linate

Geotec S.p.A.

0,000

0,500

1,000

1,500

2,000

2,500

0 200 400 600 800 1000 1200 1400 1600 1800 2000

(m

)

tempo (s)

Altezza / Altezza iniziale - tempo (s)

Abbassamenti (m) ‐ tempo(s)

0,0500

0,5000

0 200 400 600 800 1000 1200 1400 1600 1800 2000

h/h0

tempo (s)

3,000

3,500

4,000

4,500

5,000abba

ssam

ento

Livello da bocca foro (m)t (s) h (livello da fondo foro (m)) Permeabilità K (m/s)

Permeabilità media K (m/s)

4,552E 052

1

12

lnhh

ttCAK

L

GradiniPressione [T·m-2]Pressione effettiva [T·m-2]Durata [min]Lunghezza prova [m]Tempo [min]Acqua iniettata [l]Litri al minuto [l·min-1]Litri al minuto per metro [l·min-1·m]Unità LugeonPermeabilità [m·s-1]

130

39.920

55

76.73.84

0.7671.9

2.35E-07

250

59.920

55

93.34.67

0.9331.6

1.90E-07

380

89.920

55

140.77.04

1.4071.6

1.91E-07

450

59.920

55

99.95.00

0.9991.7

2.04E-10

530

39.920

55

773.85

0.7701.9

2.36E-07

Tipo di moto

Pressione effettiva Unità Lugeon

instauratosi Unità Lugeon rappresentativa Permeabilità relativa K (m·s-1)Turbolento 1.8 1.91E-07

0 5 10 15 20 25 30 35 40 45 50

gradino 1 gradino 2 gradino 3 gradino 4 gradino 5

0.0 0.1 0.1 0.2 0.2 0.3

Uni

tà L

ugeo

n

Pres

sione

(T/m

2)

gradino 1 gradino 2 gradino 3 gradino 4 gradino 5

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

0.045

0.05

0 5 10 15 20 25 30 35 40 45 50

Port

ata

per m

etro

(l/s

m)

Pressione effettiva (T/m^2)

Indagini geotecniche in foro

Data

Prof. prova

H immissione (da p.c.)

Nome prova

S1

S1_LG3

26/11/2011

36,5 - 41,5 m

Prof. falda (da p.c.) 9,0 m

Sondaggio Asta di manovra

Pressioni - Portataandata ritorno


SPINTA(BAR)

66 130 1942

VEL. ROTAZIONE(RPM)

171 343 5140

PRESS. ROTAZIONE(BAR)

80 161 2410

INCLINAZIONE Y(DEG)

-12,43-36,21 11,36-60

VEL. PERFORAZIONE(M/H)

-2776 2355-1065 645

143

65

-12

85

124

27

7

104

46

-32

GR

APH

S BA

SED

ON

PR

OFO

ND

ITA(

M)

Dac Test

Total GroutDrill Name 14579,77 L Hole diameter L EGT VD315


9 | Company presentation Geotec S.p.A.

EK 650 CAN – ELLETTARISAME 130 HP 4x4 wheeled tractor3600 mm5000 kg5000 kg500 kg0-250 rpm650 kgmmud pump, tilting head. 15

MAGIRUS EK 1000 MAGIRUS DEUTZ 4x4 TRUCK5500 mm8000 kg8000 kg2000 kg0-300 rpm1000 kgmmud pump, tilting head2

Model:Type of vehicle:

Strokes of rotary head:Extraction force:

Crowd force:Maximum winch strength:

Rotation speed:Maximum torque:

Equipped with:Number of rigs available:

CASAGRANDE C8Crawler drilling rig8000 mm 12000 kg 7850 kg 2000 kg 0‐1000 rpm 920 kgm wireline winch 1

DRILLMEC G25 ASTRA 6x8 TRUCK6800 mm24000 kg10000 kg24000 kg0-750 rpm1350 kgmmud pump, tilting head,optional rotary headwith reverse fluid circulation (1700kgmx60rpm), 1200mt. wireline winch1

Drilling rigs

EK650 CAN - ELETTARI

MAGIRUS EK1000

DRILLMEC G25

CASAGRANDE C8















Equipped with:

Number of rigs available:


ATLAS COPCO MUSTANG S-52Crawler drilling rig3700 mm8000 kg8000 kg2200 kg0-630 rpm1000 kgmSdrillmatic 1

EGT VD 315 Crawler drilling rig3400 mm12000 kg10000 kg1500 kg0-600 rpm1000 kgmDac test, wireline winch, rotopercussion1

EGT VD 700Crawler drilling rig3400 mm12000 kg10000 kg1500 kg0-600 rpm1000 kgmDac test, wireline winch, rotopercussion1

Drilling rigs

ATLAS COPCO MUSTANG S-52

EGT VD 315

EGT VD 700










Equipped with:






Equipped with:


FRASTE FS 300

FRASTE FS 300Crawler drilling rig7000 mm19000 kg14000 kg7700 kg0-1400 rpm1351 kgmwireline winch, RC HAMMER / AIR CORE kit., automatic loading drill roads system.5





Equipped with:


Geotec S.p.A.Head officeVia G. Barbato, 2086100 Campobasso, ItalyTel. +39 0874 481868Fax +39 0874 69088

[email protected]

Registered in the Court of Campobasso No.1962 Registered in Chamber of Commerce Campobasso No. 75777VAT No. IT 007 1263 0706

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