Shallow-basin riverbed microtopography measurement apparatus

Abstract

The invention discloses a shallow-basin riverbed microtopography measurement apparatus. The whole apparatus is a hull-type buoyancy tank structure, the apparatus comprises a measurement box and a buoyancy groove, and the measurement box is arranged on the buoyancy groove; the measurement box is inside provided with a magnetic control circuit and multiple measurement units; each measurement unit comprises a floating scale, a water tank, a disk, a water injection pipeline and a measurement rod; when the apparatus works, the measurement rod penetrates the corresponding tank bottom and the buoyancy groove and is contacted with the river bottom, the river bottom relative elevation is indirectly calculated based on the decreased distance of the measurement rod, and the automatic elevation of the measurement rod is controlled through an electrified magnetic field. The apparatus is applicable to measure shallow-basin riverbed microtopography, and is capable of accurately efficiently drafting the basin topography by being combined with riparian zone control point measurement equipment. When the apparatus performs riverway microtopography measurement, distributed points are relatively dense, and measurement is simple and fast. Compared with current engineering measuring instruments, the apparatus saves a large amount of working time, and compared with ultra-sonic depth finders and other advanced equipment, the apparatus possesses the advantages of being economical, cheap, simple, practical and the like.

Description

technical field [0001] The invention relates to a shallow riverbed micro-topography measuring device, which belongs to the technical field of river channel surveying. Background technique [0002] In the process of river resource development, ecological improvement and hydrological model research, accurate measurement of river hydraulic slope, cross-sectional shape and underwater topographical characteristics is the primary task. In river channel surveying, in addition to some land survey work, it is mainly underwater survey work. Since people cannot directly observe the underwater topography, they cannot rely on direct measurement of topographic feature points to draw river channel vertical and horizontal sections and underwater surveys. The topographic map must be drawn using the uniform measuring point method. In order to ensure that the measuring points are evenly distributed, without missing or repeated measurements, the scattered point method or the method of laying ou...

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Problems solved by technology

[0003] Purpose: In view of the time-consuming, laborious and cumbersome processes existing in the current channel measurement methods, in order to overcome the deficiencies in the prior art, the present invention provides a shallow riverbed micro-topography measurement device. The measuring rods of the device are densely arranged, and The measurement process is simple and fast, not only can accurately draw the river topography, but also greatly improve the work efficiency

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