Sailing type suspended load sediment rapid testing method

Abstract

The invention provides a sailing type suspended load sediment rapid testing method which comprises the following specific steps of placing a sediment monitoring sensor at a certain depth below the water surface, conveying the sediment monitoring sensor from one bank to another bank along a testing section at a constant speed, measuring to obtain a to-be-tested sediment sensing value, returning from the other bank, and measuring to obtain a back-to-be-tested sediment sensing value, averaging the two to obtain thesediment induction value of the measurement, and converting the induction value into the sediment content through a sediment conversion model, and acquiring the average sediment content of the section. The sailing type suspended load sediment rapid testing method is reasonable in design, suspended load sediment testing is completed in a sailing type testing mode, operation is convenient and fast, the workload is small, timeliness is good, precision is reliable, testing cost is low, operation safety is high, and the method can solve the problems of long duration, poor timeliness, poor online monitoring representativeness, low precision and the like of traditional manual test, and provides a high-precision and rapid testing method for river suspended sediment test.

Description

technical field [0001] The invention belongs to the technical field of water body suspended sediment testing, in particular to a mobile-type rapid testing method for suspended sediment. Background technique [0002] The traditional test method for suspended sediment in hydrological survey is: lay out several sampling vertical lines on the test section, arrange several measuring points on each test vertical line, use suspended sediment sampler to sample at the test site, A sampling process takes 2-6 hours. After sampling, steps such as precipitation and concentration are required, and then the sand weight is measured in the analysis room by drying methods and other methods, and the suspended sediment content is calculated. Among them, on-site sampling takes a lot of manpower, material resources and time, especially when sampling during high floods, it is easy to miss the test opportunity, and there are certain safety risks. In addition, the drying method requires at least 7...

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