The Model of Stability State of a Tunnel Under Construction on the Basis of Data Layered Seismic Survey

The presented report discusses the survey results of the technical condition of the unfinished road tunnel construction on the site: “The public highway of regional importance of the Republic of Bashkortostan - a new exit from the city of Ufa to the federal highway M-5 Ural (Eastern exit).” The purpose of the work was to research the engineering-geological and hydro-geological conditions of tunnel to estimate rock mass stability. At the moment, the main problems in the process of developing the project for the reconstruction of the tunnel and the completion of its construction are:

• - the presence of karst formations in the vicinity of the tunnel;
• - water-saturated zones, not opened by existing galleries.

The exploration of these problems will be the basis for the decision on the need to build a drainage tunnel. It was these circumstances that required the use of the seismic method in a sophisticated observation system with the ultimate goal of constructing a 3D parametric data set that provides for the detection of karst formations and disintegration zones at hazardous distances from the tunnel axis.