Method and experiment apparatus for analyzing drainage pipeline siltation characteristics

Abstract

The invention provides a method and experiment apparatus for analyzing drainage pipeline siltation characteristics. The apparatus comprises a reservoir, a constant flow water tank, a test pipeline and a water outlet tank. The reservoir supplies water for the constant flow water tank through a reflux pump; water in the constant flow water tank flows into the water inlet of the test pipeline with a preset constant flow rate; the water outlet of the test pipeline is intercommunicated with the water outlet tank; the test pipeline is provided with a plurality of water level monitoring vertical pipes; the slope of the test pipeline is adjustable; the test pipeline is internally provided with a barrier for simulating siltation. The method comprises determining a first hydraulic slope of a first monitoring position and a second monitoring position without the barrier, and a second hydraulic slope with the barrier; determining a pipeline siltation index according to the first hydraulic slope and the second hydraulic slope to obtain a single experiment array which comprises parameters including pipeline slope, water flow velocity, barrier specification and position and pipeline siltation index; and repeating the steps to obtain a plurality of single experiment arrays to construct a drainage pipeline siltation characteristic curve.

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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