Saturated sand transportation theory-based sandy inland waterway back silting quantity forecasting method

Abstract

The invention discloses a saturated sand transportation theory-based sandy inland waterway back silting quantity forecasting method. The method comprises the following steps of: 1, dividing back silting calculation units; 2, carrying out statistical analysis on an observed sediment quantity of scour-silt in each unit; 3, establishing and verifying a two-dimensional water flow model, and calculating water levels, a flow speeds and flow directions along the way; 4, substituting the calculation result in the step 3 and a substrate median size into a bed load sand transportation rate formula so asto carry out statistical analysis on a net sand transportation quantity; 5, comparing the observed sediment quantities of scour-silt with the net sand transportation quantity, and adjusting calculation parameters of the rated bed load sand transportation rate formula to ensure that the observed values and space distribution thereof are identical with calculated values; and 6, forecasting a back silting amount of a to-be-constructed waterway according to the step 4 by adoption of the water levels, flow speeds and flow directions of the units in the step 3 and the parameters of the sand transportation rate formula. The method is concise and efficient, is capable of overcoming the defect that the past bed load back silting prediction is difficult to avoid field bed load observation and indoor simulation and then enriching the inland waterway back silting forecasting method.

Description

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AI Technical Summary

Benefits of technology

This technology improves upon existing models used by researchers studying soil movement caused by rainwater runoff or other factors such as wind pressure during drilling operations. It involves calculating how much material from an area has been collected at different depth levels within it beforehand. By comparing this measurement against previously calculated results, scientists may be able to make better predictions about future issues related to these areas.

Problems solved by technology

This patented describes different ways that may help estimate how much liquid will flow down an area without getting stuck or causing damage during winter months when there's no rainwater coming from outside. These techniques include analyzing wave movements caused by moving particles like seawater hitting up against rocks along shores with heavy equipment while they move around them; studying the impact force experienced due to these forces over long periods of time (sea). Additionally, some existing solutions involve observing changes made after precipitation occurs but cannot accurately predict future conditions such as water level change.

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