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Geotechnical Investigations

Lesotho Dam Geotechincal

Lesotho Dam Investigation

The project, which incorporates a geotechnical investigation and Lugeon testing for a potential dam site is located at two sites, one at Senqu B and the other at Oxbow.

East London Harbour Quay Wall

The project required that we drill 6 holes (HQ3 size), with SPT’s, Shelbey’s and Shearvane testing, half a meter out into the sea from the Quay edge.

Paarl CPTu & In-situ Testing

Road Interchange, Paarl

CPTu testing for a road interchange in the Paarl area. The project entailed 12 CPTu’s, with augering through the hard layers, to a total depth of 20m.

Khanyisa Power Station

Khanyisa Power Station

The Apageo Pressure Meter test and other In-Situ tests were done to determine the soil characteristics to be used for assessment of excavation methods and for detailed design of foundations, ground improvement and earthworks.

Fufu Hydropower Project, Malawi

Fufu Hydropower Project, Malawi

The Ministry of Energy and Natural resources of Malawi commissioned Geomechanics to undertake a geotechnical survey of two potential locations for hydroelectric power stations, one in the north and one in the south of Malawi.

Exploration Drilling

AEL Sonic coring project at Modderfontein

AEL Sonic coring project at Modderfontein

Geomechanics was commissioned to determine the extent of contamination of explosive material in the ground. The Geo-601 Comacchio combination drill rig was converted to drill remotely to reduce the risk of injury to staff from drilling into unexploded ordinance.

BlackRock Exploration Drilling

Black Rock

Largest underground drilling contract to date was for Assmang’s Black Rock mine operations project in the Northern Cape which was completed with a flawless safety record and uncompromised commitment to quality assurance and environmental project aspects.

Sonic drilling for Rio Tinto ’s

Drilling in sands for Rio Tinto

Sonic drilling for Rio Tinto ’s Richards Bay Minerals sands project at the RBM site near Richards Bay. Geomech Africa uses the SDC 450-24 sonic drill rig from Canada to drill the required deep boreholes in mineral sands.

Wadrift Water Drilling

Wadrift Dam Project

Geomechanics was contracted to do an investigation for siting a holding dam and a series of boreholes at Wadrift.

Exxaro Secure the Safety of its New Lakeside Towers Development

GeoGroup Companies help Exxaro Secure the Safety of its New Lakeside Towers Development

The New Exxaro’s Lakeside Towers Office Development was developed over a dolomite rock formation. The dolomite formation is renowned for developing sinkholes and this poses a potential risk to the safety of structures built upon them and hence the people within those structures.

Vibrating Wire Piezometers

Vibrating Wire Piezometers

Tenke Fungurume Mine Project DRC Terra Monitoring (Pty) Ltd. was appointed by Golder Associates Africa (Pty) Ltd. to install eight Vibrating Wire Piezometers VWP in the North Embankment, North Saddle Embankment and Spillway Embankment of the TSF tailing dam.

Driven Ductile Iron Pile Solutions

Val de Vie

Val de Vie

Percussive pre-drilling and grouting using sister company Geomechanics created a safe passage for the ductile iron pile to be driven.

KaXu Solar One Solar Plant

KaXu Solar One Solar Plant

The KaXu Solar One is a concentrated solar thermal plant, located 50km North East of Pofadder in the Northern Cape. It covers an area of 1,100 hectares.

Bloemfontein Central Park Shopping Centre

Bloemfontein Central Park Shopping Centre

Very tight access piling, as close as 30cm from existing column, with limited headroom of 2.5m in places.  28 end-bearing piles were installed to depths between 8-10m in only two days on site.

Dora Nginza Hospital piling

Dora Nginza Hospital

This large scale job entailed installing 210 end-bearing piles with limited geotechnical information.

Jack-up barge metal welding and fabrication

Jack-up barge

Geomechanics CEO Dave Rossitter designed, and sister company Geostruct custom built, a jack-up barge that can be used to do geotechnical drilling surveys in up to 8m of flowing water. The self-propelled barge is used as a platform for the drill rig and crew for surveying the ground conditions in rivers and dams.

Track Mountings

Track Mountings

GeoStruct manufactures the track mountings for many uses. GeoGroup uses them for its drill rigs

GeoGroup Head Office

Plot 28 Central Road
Sunrella, Lanseria
Gauteng
South Africa

Tel. +27 (0)11 966 7760
       0861 436 632
Fax. +27 (0)86 663 3896
Email. info@geogroup.co.za