A method and experimental device for analyzing the sedimentation characteristics of drainage pipes

Abstract

The invention provides a method and an experimental device for analyzing the sedimentation characteristics of drainage pipes. The device includes a water storage tank, a constant flow water tank, a test pipeline, and a water outlet tank; the water storage tank supplies water to the constant flow water tank through a return pump, and the constant flow water The water in the tank flows into the water inlet of the test pipeline with a preset constant flow rate, and the water outlet of the test pipeline is connected with the water outlet tank; there are several water level monitoring standpipes on the test pipeline, the slope of the test pipeline is adjustable, and the test pipeline is equipped with There are obstacles for simulating silting conditions. The method includes the first hydraulic gradient when there is no obstacle and the second hydraulic gradient when there is an obstacle at the first monitoring position and the second monitoring position, and determining the pipeline sedimentation index according to the first hydraulic gradient and the second hydraulic gradient to obtain a single Sub-experiment array, the single-experiment array includes pipeline slope, inflow velocity, obstacle specification and position, and pipeline sedimentation index; repeat the above steps to obtain several single-experiment arrays to construct the sedimentation characteristic curve of the drainage pipeline.

Description

technical field [0001] The invention relates to a method and an experimental device for analyzing the sedimentation characteristics of drainage pipes. Background technique [0002] Sewage is collected and discharged to treatment facilities through drainage pipes, but suspended solids in sewage will settle during transportation. The likelihood of silting increases dramatically with the length of time the sewer line is in service. Pipeline silting and blockage is an important problem in the daily operation and management of drainage pipe network. Sediment accumulation hydraulically will cause increased head loss along the way, resulting in poor drainage, resulting in overloading of the drainage system and premature arrival of combined overflow, and even overflowing the road surface, causing water accumulation and environmental pollution. [0003] At present, in terms of operation management, there is a lack of technical means to grasp the actual operation status of the drain...

AI Technical Summary

Problems solved by technology

Sediment accumulation hydraulically will cause increased head loss along the way, causing poor drainage, resulting in overload operation of the drainage system and premature arrival of combined overflow, and even overflowing the road surface, causing water accumulation and environmental pollution

[0003] At present, there is a lack of technical means to grasp the actual operation status of the drainage network in terms of operation management, it is difficult to evaluate the daily deposition of the underground drainage network, and there is a lack of necessary data support for the hydraulic analysis and maintenance and dredging management of the drainage network

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