Roadbed grouting reinforcement pressure control device

The utility model relates to a roadbed grouting reinforcement pressure control device. The utility model belongs to the field of roadbed construction equipment, the device comprises a hollow detectiontube and a tube head arranged at one end of the detection tube, a movable plug is slidably arranged in the detection tube, an abutting table is arranged in the detection tube, a movable rod is slidably arranged in the abutting table in a penetrating mode, one end of the movable rod is fixedly connected with the movable plug, the other end of the movable rod extends out of the detection tube, themovable rod is sleeved with a spring, one end of the spring abuts against the abutting table, and the other end of the spring abuts against the movable plug. During use, mortar enters the detection tube through the tube head and pushes the movable plug to move upwards, and the movable plug drives the movable rod to move upwards; the pressure of the mortar in the foundation is judged according to the upward movement distanc