Author(s):
1. Marjan Hudej, RGP d.o.o., Slovenia
2. Miran Hudournik, RGP d.o.o., Slovenia
3. Tadej Vodušek, RGP d.o.o., Slovenia

Abstract:
Tunnel Karavanke lies on the trans-European transport Corridor X and connects the A2 motorway in the Republic of Slovenia to the A11 motorway in Austria. Existing Karavanke tunnel was built over 30 years ago as a single-tube and is currently a safety problem in the trans-European transport corridor. Based on the Directive of the European Parliament and the Council on minimum safety requirements for tunnels in the trans-European road network, the Republic of Slovenia and the Republic of Austria has decided to participate in the onstruction of the new eastern tunnel tube and the rehabilitation of existing western tunnel tube until 2019. In 2016 we started with a drilling research work in the context of the implementation of geological, geotechnical and hydrogeological investigations. We got more than 1000 meters of drilling core. Particular attention during the drilling was in very demanding conditions in the geological layer, which content methane. Some of the geological formation in this area contains a large amount of methane (over 30%). In this article we want to describe the technology that allowed drilling in a manner appropriate to ensure the core of the high degree of security.

Key words:
exploratory drilling,Karavanke tunnel,outbreak of methane

Thematic field:
Geological activities and economics of mineral-raw material complex

Date of abstract submission:
15.05.2017.

Conference:
7th Balkan Mining Congress

Paper for reviews Abstract Final paper