High ground stress soft rock tunnel border defense supporting plate

The invention discloses a high ground stress soft rock tunnel border defense supporting plate which comprises a base, a supporting frame is welded and fixed to the middle of the base, and a top base is connected to the upper end of the base in a clamped and sliding mode. The motor is installed on the lower surface of the supporting frame through bolts, the output end of the motor is in key connection with a first bevel gear, the left side and the right side of the outer side of the first bevel gear are both in engaged connection with second bevel gears, and threaded rods are fixedly arranged in the middles of the second bevel gears; and the outer side of the threaded rod is in threaded connection with a sliding block. According to the high-crustal-stress soft rock tunnel border defense supporting plate, through the arrangement of a threaded rod and a lifting rod, the height of the supporting plate can be adjusted, the supporting plate can be suitable for tunnels of different heights, the application range is