6 results about "Check dam" patented technology

This invention discloses a silt-retaining dam structure based on 3D printing and extrusion modules, comprising a stepped dam body, a 3D-printed protective shell, a spillway energy dissipation system, and a surface reinforcement layer. The stepped dam body is assembled from prefabricated loess-based extrusion modules using a mortise and tenon structure, with each layer dry-laid layer by layer from bottom to top in a staggered pattern, the width of each layer decreasing with increasing height. The spillway energy dissipation system is constructed by progressively narrowing and staggering the extrusion modules to create the spillway. The energy dissipation structure within the reserved space is integrally formed with the 3D-printed protective shell on the upstream slope and dam crest, without construction joints. The 3D-printed protective shell is formed on the upstream slope and dam crest using the extrusion modules as the base surface. The surface reinforcement layer is applied to the exposed surfaces of the 3D-printed protective shell and energy dissipation structure, simultaneously filling the module seams and printed micropores. This structure constructs a three-layer collaborative protection system, enabling rapid assembly, stable operation, and low-cost maintenance.

This invention relates to the field of soil and water conservation technology, and provides a portable gully retainer and its deployment method for shallow gully management. The portable gully retainer includes a transverse retaining wall, a stilling basin, and protective wing walls. The transverse retaining wall is positioned horizontally along the width of the shallow gully and has an overflow outlet. The stilling basin is located downstream of the transverse retaining wall, with a gradient arrangement between the stilling basin and the overflow outlet. The protective wing walls are located at the end of the stilling basin furthest from the transverse retaining wall, and are angled to the flow direction of the shallow gully. The transverse retaining wall, stilling basin, and protective wing walls are connected to form a turbulent flow channel, which slows down the water flow velocity and controls the flow direction within the shallow gully. This invention effectively intercepts sediment, controls gully slope expansion and gully bottom erosion, is easy to assemble and disassemble, is reusable, and its deployment location and insertion depth can be dynamically adjusted according to the sediment deposition depth without affecting mechanized farming, fundamentally solving the problem of shallow gully management in black soil areas.

The present application relates to the field of intelligent water conservancy and automation control technology, in particular to a polder multi-site water conservancy data real-time acquisition and intelligent fusion processing method and system, comprising: a multi-dimensional acquisition system construction step: collecting time sequence state, fluid field and environmental boundary data and performing time base unification cleaning; an ideal model construction step: constructing an ideal water tank model based on the law of conservation of mass and generating an ideal water level change curve; a parameter injection simulation step: injecting efficiency attenuation and medium leakage parameters to generate a simulation fault water level curve; a double-track difference calculation step: differentiating the measured and simulation data from the ideal curve to generate real and theoretical residual vectors; a similarity determination and control step: calculating sequence similarity to determine real physical faults or sensor data noise, and generating fusion control instructions; the present application effectively solves the technical pain point of distinguishing between sensor noise and real physical faults, avoiding false positives or false negatives.

The application relates to the technical field of water conservancy projects and disaster prevention and reduction, and discloses a method for calculating flood evolution after a silt dam system is breached, which comprises the following steps: firstly, a numerical model containing hydrodynamics, non-equilibrium sediment transport and riverbed deformation is constructed; in the evolution calculation, the water flow and sediment equations are solved simultaneously, the riverbed elevation is updated in real time according to the scouring and silting depth, and the fluid density and viscosity coefficient are dynamically corrected according to the sediment concentration, so that the water-sediment-bed two-way coupling is realized; for the cascade dam system, the silting volume of the upstream incoming sediment in the downstream reservoir area is calculated, the reservoir water level rise caused by the reservoir capacity occupation is quantified, and the cascade failure risk of the downstream dam body is determined; finally, the comprehensive risk distribution based on the mixed fluid kinetic energy is output. The application can objectively reflect the remolding effect of high-sediment flood on the terrain and the change of the fluid physical properties caused by the sediment, and improves the prediction accuracy of the evolution speed, the inundation range and the disaster-causing intensity of the flood caused by the chain breaching of the silt dam system.

This invention relates to an experimental device for observing the movement of debris flows that can be autonomously adjusted. The device includes a flume model and a support assembly. The flume model is tilted downwards and has an overflow outlet at its bottom. The support assembly includes a support frame, multiple sliding rods, and multiple impact pressure detection devices. The support frame is positioned in the area indicated by the downward tilt of the flume model. The multiple sliding rods are arranged parallel to the support frame and are slidably connected to the support frame along directions close to or away from the overflow outlet. Each sliding rod is equipped with multiple impact pressure detection devices. The debris flow is discharged through the overflow outlet of the flume model and impacts the multiple sliding rods of the support frame. The device allows observation of the horizontal projection distance of the debris flow, the lateral width and longitudinal length of the discharge, and also allows monitoring of the spatiotemporal distribution characteristics of the impact pressure during debris flow discharge using multiple impact pressure detection devices arranged on the sliding rods. This provides convenient conditions for the quantitative calculation of the movement characteristic parameters of debris flows after passing through the overflow outlet of a check dam.