Hydraulic dam supporting mechanism capable of being limited in folded mode

The invention discloses a hydraulic dam supporting mechanism capable of being limited in a folded mode. The hydraulic dam supporting mechanism is provided with an upper supporting rod and a lower supporting rod, wherein a first end of the upper supporting rod is hinged to a dam body, and a joint is arranged at a second end of the upper supporting rod; a second end of the lower supporting rod is hinged to a dam foundation, and a connector is arranged at the second end of the lower supporting rod; the joint and the connector are hinged and further provided with a limiting mechanism used for limiting the relative positions of the joint and the connector when the dam body is completely lifted up; when the dam body is completely lifted up, the included angle between the sides, near the dam body, of the upper supporting rod and the lower supporting rod is smaller than 180 degrees. Through control over the included angle of the upper supporting rod and the lower supporting rod and the function of the limiting mechanism, the purpose of self-locking of the upper supporting rod and the lower supporting rod is achieved. When a hydraulic cylinder for supporting the dam body releases pressure, the supporting rods can also support the dam body.