Crossgates Station
WTL have recently been working at Crossgates station in Leeds, the works consisted of vegetation management and rock fall netting installation.
This project was to be completed in two stages, firstly removal of substantial vegetation to the platform side cutting and secondly we were to rock drill sections of the retaining walls on the opposite side of the bridge to fit rock fall netting. A Marini drill rig mounted on an RRV on Saturday night possessions was used in additional to a hand operated pneumatic drill to install spot dowels and anchors which will be used to secure the netting, these were resin bonded to hold the anchors in place and them netting was dropped down the face and secured with top and bottom cables and d shackles.
Phase two of the works would incorporate the use of hand drills on day shifts at the top of the retaining wall to drill the anchors. The compressed air drills bored to a depth of around 2m. The hole is then filled with threaded hollow bar and a special grout is mixed and poured in to the void until the bar is set.
Using our own Irata trained rope technicians, WTL were able to set up in such a way on the top of the retaining wall by attaching to the bottom sections of the palisade posts to give all operatives a safe system to work with and line running down the entire work area to clip on and off in safety.
Once set this will act as an anchor point for the netting and can be cut to length with a plate and eye spun on to carry the wire which will run across the top and hold the netting in place.
Seventeen anchors were drilled and grouted to the top of the retaining wall and a further seventeen to the bottom track side were drilled using the Marini rig on possessions and secured using resin. The bars are then spun in using a turmag which once the bar is turned in splits the resin capsules which in turn makes them set solid within 90 seconds.
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