Anchor rod net hanging construction platform and construction method for coal mine underground roadway

The anchor rod net hanging construction platform comprises a first U-shaped frame, a displacement frame, a displacement cross rod and a supporting slope plate, the left side of the first U-shaped frame is slidably connected with a second U-shaped frame, a bearing hopper is arranged in the second U-shaped frame, the displacement frame is inserted into the left end of the first U-shaped frame, and the displacement cross rod is arranged in the bearing hopper. A displacement plate is arranged on the displacement frame in a sleeving mode, a supporting slope plate is arranged above the first U-shaped frame, and the left end of the supporting slope plate is fixedly connected with the displacement transverse plate. According to the anchor net hanging device, by arranging the supporting slope plate, a worker can be located at the position of the construction height, the burden caused by double-arm lifting is reduced, the accuracy of anchor net hanging is improved, meanwhile, by arranging the second U-shaped frame with