Tunnel Rehabilitation



Tunnel Rehabilitation projects provide a unique set of challenges. We've worked on some unique tunnel projects over the years from Smithers BC, to the Yukon. Here are a few of them:

Project: Tom Mine Tunnel Plug & Grouting

Location: Tom Mine, Yukon

Duration: May to September, 2010


Installation of a 150 cubic metre concrete plug 100 metres into the tunnel, as well as drilling and grouting of the concrete plug. This project required installation of tunnel formwork bulkheads, concrete plug piping, shotcrete formwork and the pumping and placing of 150 cubic metres of concrete. 



Project: Ashlu Tunnel

Location: Squamish, BC

Duration: May to October 2009


Steel formwork was installed to a 3 metre diameter penstock pipe as well as the application of concrete in place around the pipe within the hydro tunnel 60 metres from the tunnel portal. The unique nature of the project provided our team with a challenge. Grouting of the plug was done by rock drilling from the inside of the steel pipe through pre-installed drilling ports. A total of 18 holes were drilled to a depth of 10 metres and grouted with microfine grout to pressures of up to 30 bar.


Project: BC Northline Tunnel Clearance Improvement Project

Location: Smithers, BC

Duration: June to November, 2008


For this project we designed and procured a custom grout mixing and pumping system to fit the project needs. We then installed the specialized equipment onto rail cars in order to carry out core drilling through the tunnel concrete lining and mixed and pumped 1.2 million litres of grout. To finish off, we applied dry shotcrete repairs to the tunnel lining and portals.


Burns Lake 4.jpg

Skins Spillway Seismic Upgrade

We just finished work at the Skins Spillway seismic upgrade project in Ootsa Lake, BC

This 2 month project included chipping scaling and washing to prep the slopes, then our crew drilled anchors and grouting, finally applying two layers of steel fibre dry mix shotcrete to complete the project in late September


Vancouver Post Office Building Seismic Upgrade


We're working on foundation walls at the massive city block sized rehabilitation project of the historic Vancouver Post Office building

Hammersly Pump Station


We finished work on the radius lining of Hammersly Pump Station in April. Shotcrete application was carried before and after installation of the pump screws.


Beautiful BC at Skins Spillway

December 18, 2019

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Head Office: 17739 56A Avenue, Surrey BC V3S1G4

Tel: 604-575-2563  Fax: 604-575-3236   Lorne@LRutt.com

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