Statele Unite
Statele Unite

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Hydroelectric Power Plant Tunnel

Minerit / Tuneluri - Hydroelectric Power Plant Tunnel 2014

Mechanized installation process with MESHA® on Sandvik equipment

Minerit / Tuneluri - Hydroelectric Power Plant Tunnel 2014

MINAX® 80/4 installed with standard plates. Thanks to knotted mesh ends, rockbolts installed in the last opening are not problematic.

Minerit / Tuneluri - Hydroelectric Power Plant Tunnel 2014

Rockburst problem during constrution of the headrace tunnel - it is clear the the ground support structure had to be reinforced

Minerit / Tuneluri - Hydroelectric Power Plant Tunnel 2014

Mechanized installation process with the MESHA® handler

Minerit / Tuneluri - Hydroelectric Power Plant Tunnel 2014

Jumbo equipped with MESHA® handler on the way to the tunnel front

 

Anul instalării

2014

Situația inițială

During construction of the headrace tunnel in July 2012 for a hydro power plant some severe rockburst occured. The high internal stress in the rock and overburden over 1000 m on top of the tunnel as well as the brittle metamophic character with a rock mass rating RMR › 65 caused some severe problems during the project.

Descriere

The tunnel was divided in sectors to analyse the stress level in regard to the high stress classification whereas it shows that some rockbursts of level 2 and 3 occured. In the most critical zone a support system with MINAX® 80/4 was applied in combination with mechanized installation thanks to Geobrugg's MESHA® handler. The installation time had been decreased between 20 to 25% and safety for workes was significantly improved.

Client

-

Obiect protejat

Altele

Protecţie împotriva coroziunii

GEOBRUGG SUPERCOATING

Contactul dvs. local

Dane Wagner
 

Dane Wagner

Open Pit Mining / Quarries Business Development Manager

Minerit / Tuneluri
Geobrugg North America, LLC,10700 SW Beaverton Hillsdale Hwy, Suite #470-1,97005 Beaverton / Statele Unite Open Pit Mining / Quarries Business Development Manager

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