The present invention relates to the technical field of mudslide prevention and control engineering, and provides a bottom hole type mudslide blocking dam and a dam height calculation method. According to the present invention, a climbing height of the mudslide impacting a bottom hole type mudslide blocking dam can be accurately calculated, so as to guide the height design of a dam body of the bottom hole type mudslide blocking dam, thereby guaranteeing the working safety and the protection capacity of the bottom hole type mudslide blocking dam, and saving the manufacturing cost of the bottom hole type mudslide blocking dam.

The present invention relates to the technical field of mudslide prevention and control engineering, and provides a bottom hole type mudslide blocking dam and a dam height calculation method. According to the present invention, a climbing height of the mudslide impacting a bottom hole type mudslide blocking dam can be accurately calculated, so as to guide the height design of a dam body of the bottom hole type mudslide blocking dam, thereby guaranteeing the working safety and the protection capacity of the bottom hole type mudslide blocking dam, and saving the manufacturing cost of the bottom hole type mudslide blocking dam.

A fusegate for a hydraulic structure includes a trough with walls for attaching the normal barrage at a predetermined height, a pressure chamber provided between a base of the fusegate and the upper surface of the spillway, a means for pressurising the chamber according to a maximum predefined height of a water level upstream of the fusegate, the fusegate further comprising systems for breaking ice which are attached to the gate.

A fusegate for a hydraulic structure includes a trough with walls for attaching the normal barrage at a predetermined height, a pressure chamber provided between a base of the fusegate and the upper surface of the spillway, a means for pressurising the chamber according to a maximum predefined height of a water level upstream of the fusegate, the fusegate further comprising systems for breaking ice which are attached to the gate.

A precast dam structure includes at least two precast segments coupled together via linkages and a flow path structure. The flow path structure defines a flow path having an intake port and a draft port and is associated with at least one of the at least two precast segments. The flow path structure is configured to provide a change in flow direction, either internally or externally, from the at least one of the at least two precast segments.

A precast dam structure includes at least two precast segments coupled together via linkages and a flow path structure. The flow path structure defines a flow path having an intake port and a draft port and is associated with at least one of the at least two precast segments. The flow path structure is configured to provide a change in flow direction, either internally or externally, from the at least one of the at least two precast segments.

ABSTRACT OF THE DISCLOSURE A method for regulating and controlling discharge flow of a dammed lake includes steps of: (S1) estimating a most dangerous discharge condition; (S2) based on the most dangerous discharge condition, calculating a structural internal force of the steel flexible net; (S3) based on the internal force of the steel flexible net, calculating an anti-slide embedded depth at two sides of the steel flexible net; (S4) based on the most dangerous discharge condition, manually excavating a channel; and (S5) based on the anti-slide embedded depth at the two sides of the steel flexible net, embedding the steel flexible net into a barrier dam. According to the present invention, the steel flexible net is laid on the upstream slope of the barrier dam, two sides of the steel flexible net is embedded into the slope body with gravels of the barrier dam, and cooperates with the channel for usage.

A fusegate for a hydraulic structure includes a trough with walls for attaching the normal barrage at a predetermined height, a pressure chamber provided between a base of the fusegate and the upper surface of the spillway, a means for pressurising the chamber according to a maximum predefined height of a water level upstream of the fusegate, the fusegate further comprising systems for breaking ice which are attached to the gate.

A fusegate for a hydraulic structure includes a trough with walls for attaching the normal barrage at a predetermined height, a pressure chamber provided between a base of the fusegate and the upper surface of the spillway, a means for pressurising the chamber according to a maximum predefined height of a water level upstream of the fusegate, the fusegate further comprising systems for breaking ice which are attached to the gate.

The present invention relates to an economical debris flow blocking dam structure and a construction method thereof. The present invention aims to provide an economical debris flow blocking dam structure with simple structural design, construction convenience, safety, reliability and strong practicality, and a construction method thereof, to reduce concrete usage amount and save investment. A technical solution of the present invention is as follows: the structure has an excavated foundation surface, and a dam body of the blocking dam is composed of a key wall arranged at a dam toe, dam body concrete wrapped on an outer surface of the whole blocking dam, concrete masonry block stones filled inside the blocking dam, and a plurality of drain holes formed in the dam body in a top and twin-side bottom shape; an open and centralized overflow weir is arranged on the top of the blocking dam; an overflow surface has a horizontal middle and extends to two sides along a longitudinal slope i of 10-20%; and the key wall is anchored on the foundation surface through joint bars stretching into bedrock, and an anti-scouring pit is formed close to a downstream side of the key wall. The present invention is applicable to blocking structures of debris flow gully control and other similar engineering.