Immediate Measure using DSI Bar Anchors: Stabilization of a Rock Fall near Vorau

In November 2016, a large rock fell onto L 405 Vorau Road near km 22.7 between the towns of Vorau and Rohrbach in Styria, Austria. As a result of this rock slide, the L 405 was closed to traffic in this area.

In order to permit a partial reopening of the road, immediate steps were required. The rock face was stabilized from the road using a crane mount from which approx. 750m of boreholes and rock anchors had to be installed. Furthermore, the partly fractured rock was stabilized using 1,200m² of rock mesh.

To stabilize the rock fall, DSI Austria supplied 950m of 28mm Ø, 3-12m long DSI Bar Anchors including accessories.

Due to the fractured rock, the 150 DSI Bar Anchors had to be installed with fabric tubes from a telescopic work platform. For this purpose, the DSI Bar Anchors were fitted with 900m of 90mm Ø fabric tubes.

Amt der Steiermärkischen Landesregierung, Fachabteilung 16, Austria
General Contractor
SWIETELSKY Baugesellschaft m.b.H., Austria
SWIETELSKY Baugesellschaft m.b.H., Austria
Consulting Engineers
GDP ZT GmbH, Austria
DSI Underground Austria GmbH, Austria
Production, supply
150 28mm Ø, 3-12m long DSI Bar Anchors, 900m of 90mm Ø fabric tubes
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