THE MEASURE OF GROUND STRESS IN ROAD TUNNEL AXIS OF ERLANG MOUNTAIN

This paper introduces the measuring results of ground stresses of 3 holes in the road tunnel axis of Erlang mountain with hydraulic fractured method. The two major horizontal stresses are bigger than vertical stresses (expect the shallow under the earth surface). The directional coincidence of ground stress and geotectonic is discussed,and surrounding rock stability of chamber in the tunnels is evaluated