Adjustable supporting device for tunnel construction

The utility model discloses an adjustable supporting device for tunnel construction, an adjusting mechanism comprises a first clamping groove and a second clamping groove, a third supporting plate is arranged between the first clamping groove and the second clamping groove, a first guide rod is fixedly connected in the first clamping groove, one end of the first guide rod is fixedly connected with a first limiting block, and the other end of the first guide rod is fixedly connected with a second limiting block. The utility model relates to the technical field of construction assistive devices. According to the adjustable supporting device for tunnel construction, under the cooperative use of a first clamping groove, a second clamping groove, a third supporting plate, a first guide rod, a first limiting block, a second guide rod, a second limiting block, a first movable cavity, a second movable cavity, a first movable groove and a second movable groove, the first supporting plate and the second supporting plat