surveying for coal.pdf

8/9/2019 Surveying for Coal.pdf

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© Terravision 2014

Terravision Radar presentation

Surveying for oal

January 2014

www.terravisionradar.com


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© Terravision 2014

Top of Pit Wall

Target Coal

Seam

Coal & ShaleSeams

Start of Profile

Case Study 1 - Coal Case Study – Southern Africa October 2012


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© Terravision 2014

Coal Profile.The profile was taken from a coal pit wall – so calibration was possible from visual observation. The section below took 30

minutes to gather, and 4 hours to process.

Start Point End Point

Distance – (750 m)

Depth (110m)

Coal Layer

Bedrock

Shale

Faults

Overburden

Case Study 1 contd.


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© Terravision 2014

Same image, different filter from the preceding page.

Case Study 1 contd.


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Southern Africa Oct 2013 - Coal

Distance 900m

Depth 110m

© Terravision 2014

Case Study 1 contd.



Shale

Coal Layer 2 – Thermal Coal

Sandstone / shale mix

Sandstone Bedrock

Coal Layer 3 – Coking Coal

Case Study 2



Case Study 3 - RSATask: Concession Drilled in 1970’s – Run profiles through the DH, confirm presence

and structure of coal.

DH (L52) visible to the left of the image.

Terravision deployed to this remote site in a 4x4,

and walked in to the concession. 2 man team,

and 6 local helpers.

Above: Whole profile is 2.6km long, and passesthrough 2 drill holes. Note, the profile is

compressed for ease of viewing – the coal does

not roll so much in reality. The drilling identified

the “roof” of the coal.

Left: Detail – the drill hole record was for coal

roof to be seen at 77m. The profile showsgeophysical boundaries that are most likely the

upper coal resource. It is not known what the

lower “black” signatures are.

Conclusion: 6km of survey completed in 1 day,

verifying disposition of coal resource in remote

area. Data turned around instantly.

L52


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–Maximum / Minimum Amplitude

Drill Hole 1 Drill Hole 2 Drill Hole 3 Drill Hole 4

COAL

Faults

10MW transmitter – highly saline environment – depth of survey 100m

Case Study 4 - Tete Province Mozambique



Case Study 5 – RSA.

Coal is indicated by the blue layers



Schematic Representation from Radargram on Previous Page

© Terravision 2014

Case Study 5 contd.



Mined AreaForward / Undisturbed Area

Case Study 6



Coal

Coal

Coal

Case Study 7 - Coal Surveying Example – Europe: 50m Depth


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Profiles Taken

Faults

Fault Mapping

Terravision was sent out intothe Target Area to locate faults

and coal ore bodies, in order

to:

(1) review location and likely

volume of resource.

(2) Plan a targeted drilling

programme for the client.

Case Study 8 - Fault Mapping to Aid Reduction in Exploration Drilling



www.terravisionradar.com

For further information and enquiries,

please visit the website for contact details or email

[email protected]

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