Unearthing system for tunnel with barrier at portal

The utility model relates to the technical field of devices for removing or transporting excavated materials or gangues, and discloses an unearthed system for a tunnel with an obstacle at a portal, which is used for constructing the tunnel extending outwards from the existing underground cavern, and three pilot tunnels in each vertical column are provided with a set of unearthed system. Each set of unearthing system comprises hanging holes which are formed in inverted arches of the upper-layer pilot tunnel and the middle-layer pilot tunnel respectively and are aligned up and down, a crane arranged at the top of the upper-layer pilot tunnel, a downward sliding slope which extends downwards to the middle plate along the inverted arch of the lowest upper-layer pilot tunnel, and a climbing slope which extends upwards to the middle plate from the inverted arch of the middle-layer pilot tunnel. According to the utility model, the unearthing route is changed by using the crane and the slope, so that a vehicle for mo