Consolidating and Strengthening Excavations

Consolidation and reinforcement procedures are utilised to stabilise the tunnel walls and excavation, allowing even huge diameter tunnels to proceed safely and quickly. This approach provides speedy progress with huge sized excavations. It tends to be utilised in particular geological situations and in soils thought to be tough to excavate. The methods entail putting fibreglass pieces in sub-horizontal holes, grouting them, and then forming a set of micro-piles all the way around the section to reinforce the dug faces.

For the experts that work in tunnelling, we provide a number of solutions:

Profiles and components made of different cross sections of fibreglass. In order to create a variety of reinforcing elements that can withstand loads created during excavation, avoid collapse, and improve worker safety, they are installed all throughout the tunnel section. This stabilisation effect enables the use of a full-face excavation strategy (ADECO-RS approach)

The anchorage system can be employed in problematic ground when obtaining reinforcement or anchor performance is challenging; an integral sheath around the reinforcement bar holds the injected mortars, compacting surrounding soils, and preventing grout-loss and washout.

P.E.R. Ground Drain and P.E.R. Ground COPE, two hybrid anchors, allow for simultaneous reinforcement and groundwater drainage or obstruction, respectively.

With the help of expanding closed-cell foams made by polyurethane resins, accidental or unexpected water intrusion can be stopped.

GroutmasterTM, a multi-purpose, high-performance grout, can be injected into poor soils to improve them. It can reduce the permeability of soils, control settlements, mitigate liquefaction, improve the cohesion of granular soils, reduce the expansion of cohesive soils, and be used for void filling and compensation grouting.

Additionally, we provide fibreglass reinforcement bars for use in diaphragm and retaining walls within the “soft-eye” zone of tunnel breakthroughs, which are temporary underground structures. Compared to conventional steel bars, rebar CRG makes it easier to gain access to the reinforced concrete in the future.

Need more information, data and advice?

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Mani Casadona, West Tower, 2nd Floor, W7SC-11F, 04 Street Number 372, Action Area I, IIF New Town, Kolkata – 700156, India

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Mani Casadona, West Tower, 2nd Floor, Kolkata