Underground — EMEA — Austria — Tunneling
In particular , the AT – Drainage System was predestined for deep reaching drainage in highly variable formations . The system consists of an inner steel tube which is wrapped with a PVC-drainage pipe .
It can be employed temporarily as well as semi-permanently during drainage work parallel to tunnel advances . The AT – Drainage System is characterized by a rapid length adaptation achieved by piece-by-piece installation , with a simple lengthening of the drainage tubes also being possible in limited space at all times . Another important feature of the system is the high directional accuracy of the drainage drilling .
DSI supplied the Type AT – 76-DR Drainage System , T32 x 3,000mm AT – Drilling Rods , R32 shanks and R32-T32 transition pieces .
To provide immediate support in the open span area , DSI produced and supplied 3 bar , Types P50 / 20 / 30 , P70 / 20 / 30 , P95 / 25 / 30 as well as P130 / 25 / 30 PANTEX Lattice Girders including welded-on nut pairs , 1m long spacers and tilting bases with 3 struts . Excavation at the northern portal near St . Andrae was begun on April 24 th 2015 , and the tunnel chain is scheduled for completion in 2020 .
Owner ÖBB-Infrastruktur AG , Austria General Contractor Joint Venture , consisting of Implenia AG and Hochtief Infrastructure Austria , both Austria Construction Site Management Joint Venture , consisting of IL – Ingenieurbüro Laabmayr & Partner ZT GesmbH , IGT Geotechnik und Tunnelbau Ziviltechniker G . m . b . H . and iC consulenten Ziviltechniker GesmbH , all of them Austria
DSI Unit DSI Underground GmbH , Austria DSI Scope Production , supply DSI Products OMEGA-BOLT ® Expandable Friction Bolts , SN Anchors , DYWI ® Drill Hollow Bar System , AT – Tubespile TM , Ø 38 x 4 mm tube spiles , POWER SET Self-Drilling Vacuum Tube Spiles ; Type AT – 76-DR Drainage System ; 3 bar , Types P50 / 20 / 30 , P70 / 20 / 30 , P95 / 25 / 30 and P130 / 25 / 30 PANTEX Lattice Girders
25