Fluid cantilever-out horizontal distance measuring and calculating method and application thereof

The invention discloses a fluid cantilever-out horizontal distance measuring and calculating method and application thereof. The measuring and calculating method includes the steps of calculating thesand contained in fluid volume by determining the fluid volume weight and the volume weight of the solid substance in the fluid, calculating the fluid Froude number of a fluid cantilever-out point bydetermining the flow depth and the flow speed of the fluid cantilever-out point, calculating the correction coefficient of the fluid cantilever-out horizontal distance according to the sand containedin the fluid volume and the fluid Froude number of the fluid cantilever-out point, and finally calculating the fluid cantilever-out horizontal distance according to the correction coefficient of the fluid cantilever-out horizontal distance. The method is suitable for fluids of different-properties such as clear water, sand-containing water flow and debris flow, and can be used for reasonably determining the fluid cantilever-out horizontal distances for water of different properties, different cantilever-out point fluid flow depths, different fluid cantilever-out speeds, different fluid cantilever-out angles, different cantilever-out point fluid vertical depths, and different heights from the cantilever-out points to the downstream bed surfaces. The calculation method is simple, convenientand effective, and meets the requirements of actual engineering.