ENGINEERING-GEOLOGICAL ZONING OF THE ROUTE OF TECHNOLOGICAL TUNNEL DESIGNED UNDER COMPLEX STRUCTURAL AND TECTONIC CONDITIONS

The paper deals with the route of the designed tunnel and its main technical characteristics. The paper presents specific features of engineering-geological conditions of the territory of its location, as well as the analysis of the impact of structural and tectonic conditions on the state and properties of rocks, enclosing the tunnel structure. Forecast of the risk of inrush formation while performing mining workings, based on calculations of the enclosing rocks stability, have been made. Taking into account the degree of fracturing, rock inrush formation and water inflows value, a scheme of engineering-geological zoning of the designed tunnel route has been developed.