New tunnel concrete spraying kit developed

A new mechanised spraying kit for tunnelling operations has been released to enhance safety and efficiency.

Normet’s Alpha 1430 Kit, built on a self supporting frame and able to fit a range of new or used truck chassis, allows contractors to configure a concrete sprayer for medium to large cross section tunnels. It can spray cross sections of up to 12m high and 20m wide, suitable for medium to large underground mining projects.

Ilpo Martikainen, sprayed concrete product line manager, said this technology comes with different versions that can be installed on nearly any commercial truck chassis with a suitable payload capacity.

“This unique piece of equipment is designed and well suited for those market areas and construction sites where the same concrete spraying units are used in different headings or slopes with different cross section dimensions,” he said.

“The possibility to drive this unit on normal roads (local restrictions may apply) widens the usage of Normet’s technologies to a totally new level.”

The kit’s modularity and structure enables it to include features such as a compressor and electro-hydraulic power pack. It also allows simple changing from one chassis to another.

The kit also offers the Normet NSP pump and XEP accelerator dosing system reliability.

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