The Preventer valve system is connected to a compressor via an air line. The system is operated by opening and closing the rubber insert, by applying air pressure to inflate (close) or deflate (open) the rubber insert. When the rubber insert is in the closed position, it restricts the entry of the water, whilst pressing tight against the Micropile, allowing the installation and grouting to be completed.
The Preventer is fixed securely to the structure prior to commencing the installation. It is removed once the grout has completely cured, exposing the top of the Micropile ready for the head detail to be constructed.
IQ - QUICKSET ROOFBOLT®
The IQ-Quickset Roofbolt® is a self-drilling anchor that is drilled and grouted with a two-component resin in one operation. It is used for immediate stabilization of tunnel roofs and shafts in ore and coal mining, and for TBM driving. The rapid-curing/hardening silicate resin fills and seals the annular gap and all other clefts and voids. Curing takes place immediately and the anchor can be loaded after a very short time.
- Ideal where boreholes collapse and represents an alternative to adhesive cartridges as well as friction stabilizers
- Working from a secure area improves safety and efficiency
- Self-drilling anchor easily lengthened by coupling nuts
- Semi-automatic or step-by-step installation are both possible
- Extremely fast and Safe