Amberg Measuring Technique
Tel: +41 1 870 9193
Email: nchittenden@amberg.ch
Web: www.amberg.ch

The Tunnel Seismic Prediction (TSP 203) system predicts changes in rock mass to help manage project risk, increase safety and optimise planning associated with changes in ground conditions.
The TSP 203 system is specifically developed for the tunnelling industry. It evaluates seismic echo signals reflected from changes in elastic rock characteristics associated with discontinuities in the rock mass. TSP 203 provides accurate spatial information concerning the geology and rock mechanical properties in front of and around the face. The system typically has a range of 150m ahead of the tunnel face depending on ground conditions with results achieved for ranges up to 1000m.
The TSP 203 system is an essential part of the risk management process where a critical factor is the ability to understand and evaluate the results on site in real time. Therefore expert training is a key part of the package.

Atlas Copco Craelius
Tel: +46 8 5877 8500
Email: craelius@atlascopco.com
Web: www.atlascopco.com/craelius

Atlas Copco Craelius recently introduced the Diamec U6 core drill, which incorporates the latest hydraulics and electronics technology in a compact, flexible design. It can be equipped with skid or crawler mounting with electric or diesel drive. Easily operated third-generation Automatic Performance Control (APC) is standard, although a manual version is available. Corac is the name of the Craelius wireline coring system. The range includes double and triple wireline barrels for soft to extremely hard formations in sizes from 48mm to 96mm. In addition there are a variety of other designs for particular conditions in sizes from 46mm to 150mm diameter. The Tuff Line is a well-known range of drill rods for both wireline and conventional investigation and exploration drilling. It includes Platinum Tuff Wireline rods with conventional and thin walls, and designs with flush joint casings.

Cementation Skanska/NSA Engineering
Tel: +44 1302 821100
Email: 3dT@skanska.co.uk
Web: www.cementation.com

Cementation Skanska‘s 3dT system can be used in tunnels to look at conditions ahead of the face or from the surface and in boreholes to delineate areas of interest. Applications include imaging faults and fissures, looking for karstic voids, checking foundations or piles along the tunnel alignment, looking for geological interfaces, and identifying rockhead levels.
Seismic geophysical techniques are used in conjunction with advanced computer software to provide full colour 3D images, sections and plans of the ground. NSA Engineering, with whom Cementation has formed an operating alliance, developed the RockVision 3D seismic modelling software to enable the presentation and manipulation of data in 3D, for greater clarity, detail and accuracy.

CONTROLS
Tel: +39 02921841
Email: controls@controls.it
Web: www.controls.it

CONTROLS rock mechanics automatic test systems are designed to test various materials from soft sandstone to high strength basaltic samples. The ADVANTEST 9 is driven by a sophisticated micro-processed servo-control and both uniaxial and triaxial tests can be carried out at a very stable rate of stress, displacement or strain.
The SERCOMP 7 provides the automatic control and managing of cell pressure within limits prescribed by the Standards. Strain measurements are performed by means of strain gauges applied directly to the specimen, both in axial and radial direction, so that Poisson’s ratio and compressibility parameters are easily and properly evaluated during the test. Axial load and cell pressure are also monitored by load cells and/or pressure transducers at high levels of sensitivity and accuracy. All the test data is graphically displayed in real time, and stored in ASCII files for further analysis with appropriate software packages.

Deutsche Montan Technologie
Tel: +49 201 1721970
Email: exploration@dmt.de
Web: www.gyromat.de

DMT‘s fully-automatic precision surveying gyro, GYROMAT 2000, is the latest product in over 50 years of experience in the development and manufacture of gyroscopes. The GYROMAT 2000 provides accurate direction measurements independent of the earth’s magnetic field. A neutrally suspended, quickly rotating gyro oscillates about the north direction as a result of gyro spin, earth gravity, and earth rotation. A special scanning system evaluates the north position automatically and with the high accuracy of 1/1000 gon or 1.5cm/km with an operation time of only 10 minutes. Also available are two modes with a lower accuracy but a faster operation time of 5 or 2 minutes.
The accurate program commences by preliminary orientation, tape-zero determination, measurement of a complete swing period and recording on photosensors. The centre of the swing is determined by integrating one complete oscillation and the north deviation of the zero point is determined by the processor and displayed. The observer takes four horizontal circle readings to the reference object, two from each face, and the processor calculates the azimuth of the reference line. An integrated data memory captures the measured information.

DIBIT Messtechnik
Tel: +43 5223 46646
Email: office@dibit-scanner.at
Web: www.dibit.at

The DIBIT tunnel scanner is a photogrammetric measuring system, which calculates a full surface 3D model and an ortho-image of the recorded surface by using the measured stereo images. The DIBIT tunnel scanner is used for the tunnel advance (new tunnel construction) as well as for as-built recordings (tunnel maintenance and rehabilitation). The DIBIT tunnel scanner immediately offers a full surface 3D model, resolution 1cmx1cm grid; full surface ortho-image documentation; and at the same time you can get a whole number of analyses, evaluations and representations almost simultaneously.

Encardio-rite Electronics
Tel: +91 522 2661044
Email: sales@encardio.com
Web: www.encardio.com

Encardio-rite designs and manufactures a comprehensive range of monitoring instruments for geotechnical and structural engineering applications. The range of instruments for tunnel monitoring include pressure and stress cells, embedment strain gages, convergence tape extensometers, bore hole extensometers, anchor load cells, piezometers, magnetic extensometer, etc. Readout units and dataloggers are also available for taking and storing readings.

Geodata
Tel: +43 3842 265550
Email: office@geodata.at
Web: www.geodata.at

The ORTHOS tunnel scanner provides both owners and companies with similar benefits and utilisation potential, right up to significant cost savings: Increase in quality with regard to the quality of the excavation profile, shotcrete thickness, etc; control and optimisation of the construction process; recording for geological/ geotechnical purposes and spatial deformation analysis.
A simple and continuous recording, independent of lighting and surface structures, can be done within 3 minutes per 10 tunnel meters cm with an accuracy of ± 10mm. During the course of the survey, the tunnel surface is scanned with laser pulses in a grid of 1cmx1cm without a requirement for additional external measurements for determination of the instruments position. Immediately after the recording, the results are available as three-dimensional cartesian coordinates as well as intensity values for the graphical display.
A variety of analyses and display possibilities is part of the evaluation software. This includes the creation of cross-section graphs or a colour-coded plan view of the tunnel surface with details of over- and under profile, the complete documentation of the tunnel surface in the quality of a b/w-image as well as mass calculations.

Geokon
Tel: +1 603 448 1562
Email: info@geokon.com
Web: www.geokon.com

The Geokon Model GK-404 Vibrating Wire (VW) Readout Box is a portable, low-power, hand-held device designed for the readout of all Geokon VW geotechnical instruments. The GK-404 provides six excitation positions (A-F) that electronically “pluck” the wire for specific operating frequency ranges. Each position, or Display Mode, has different programmed parameters that are optimised, with different scaling and processing characteristics, for various VW instruments. The GK-404 is particularly useful for instrumentation set-up and testing prior to installing more complex monitoring systems (e.g. dataloggers, etc.), and is easily operated with one hand.
The GK-404 can display readings in digits, frequency, period, or microstrain in the case of VW strain gages, with a reading resolution of 0.1 digit. The GK-404 also displays the temperature of the transducer with a resolution of 0.1°C.
Features include automatic power-off and a battery monitor with low-battery warning. The unit has a sealed enclosure allowing operation in all weather conditions.

PJ Ealey Engineering
Tel: +44 1424 423393
Email: sales@p-j-ealey.com
Web: www.p-j-ealey.com

The Ealey Extensometer was designed to overcome the problems with the aged designs then available, such as trying to make sense of analogue dials and white lines converging in a dimly lit tunnel.
The Ealey Extensometer is digital, has a system of green and red lights to indicate correct tension and operates by a simple winding handle rather than a large, difficult to use knurled nut. Each instrument has adjustment for tension and self-length and can therefore be returned to its original physical characteristics after servicing or repairs. Tapes are produced on a specially designed machine so as to be inter-changeable within sensible tolerances.
The Ealey Extensometer was designed and launched in 1993 and since then has been used on most major tunnelling projects in the UK and Ireland as well as being sold extensively worldwide. Major contracts include JLE, CTRL, Heathrow, Dublin Port Tunnel, Hong Kong MTR, Singapore Metro and New York Subway.

Vibrock
Tel: +44 1773 711211
Email: vibrock@vibrock.com
Web: www.vibrock.com

Vibrock’s V901 Seismograph offers features including: impulse mode for blast monitoring; continuous mode for piling, rail and road traffic monitoring; tri-axial geophone sensor – option for second tri-axial sensor. It offers triggering from 0.1mm/s; single range from 0.1mm/s to 200mm/s; auto record length from 2 to 18 seconds (in impulse mode); can trigger and record PPV, acceleration or displacement parameters; air overpressure from 100 to 140dB Linear Peak.
The system has sufficient memory for about 300 events or 30 days continuous recording and is battery operated with a built in timer function. Instant readout and review of memory event results can be viewed on a LCD display, download to a PC is enabled with Windows based software.

VMT
Tel: +49 7251 96 990
Email: international @vmt-gmbh.de
Web: www.vmt-gmbh.de

With increased monitoring of the environment associated with the use of TBMs it is essential that this information can be processed and presented in a way as to be useful for effective TBM driving with regard to settlement of surface structures.
Geodetic and Geo-technical data need to be integrated with the TBM control parameters to inform the operator of the interrelationship of all parameters thereby optimising the performance of the machine.
VMT has developed its Controlled Boring Process (CBP) feature that integrates all data into one data-base to give near real-time evaluation of all incoming data for the continuous monitoring, visualisation of surface structures and for the display of deformations around the TBM. This includes the implementation of steering aid options for the driver and the supply of warning messages in case of dangerous conditions.
The presentation can also be transmitted to client offices as well as the contractor for closer monitoring during critical situations.