CN-121977791-A - Research device and method for sludge fluidization phase change and slurry making suction and discharge matching characteristics

CN121977791ACN 121977791 ACN121977791 ACN 121977791ACN-121977791-A

Abstract

The invention discloses a research device and a method for sludge logistics phase change and slurry making suction and discharge matching characteristics, and relates to the technical field of hydraulic engineering. The dredging test research method comprises the steps of setting a target test working condition, adding sediment and water into a test water tank, adjusting water supply flow, slurry pumping flow, reamer rotating speed and reamer position, starting a dredging assembly to conduct multi-dimensional disturbance dredging treatment of flushing, slurry pumping and disturbing sediment of the test water tank, collecting image data at the same time, detecting slurry concentration data and sediment concentration data, closing the dredging assembly, and guiding out the data for analysis. The invention provides a dredging test research device and method for sludge logistics phase change and slurry making suction and discharge matching characteristics under the action of multidimensional disturbance, which can simulate dredging slurry making and suction and discharge processes under multidimensional disturbance conditions of different angles, different heights and different flow rates so as to perform dredging test research, realize quick setting of different research working conditions, and are simple to operate, practical and convenient.

Inventors

LAI ZHIQIANG
WANG ZHONGMEI
CHEN LIN
JIANG YAZHOU
YANG PINGSHENG
ZHAO LIANJUN
LIU LEI
ZHAO QIYANG
Awang Ciugene

Assignees

黄河水利委员会黄河水利科学研究院

Dates

Publication Date: 20260505
Application Date: 20251230

Claims (10)

1. A desilting test research method for matching characteristics of sediment fluidization phase change and slurry making suction and discharge under the action of multidimensional disturbance is characterized by comprising the following steps: setting a target test working condition; Adding sediment and water into a test water tank according to the target test working condition, and submerging a slurry pumping port of a dredging component in the test water tank; adjusting the water supply flow of a water supply system to a preset water supply flow value, adjusting the pulp pumping flow of a pulp pumping system to a preset pulp pumping flow value, adjusting the reamer rotating speed of the dredging assembly to a preset rotating speed value and adjusting the reamer position to a target working position; Simultaneously, collecting image data of a sediment liquid phase slurry diffusion process in the dredging and slurry pumping process of the dredging assembly to calculate a slurry diffusion rate, and collecting multispectral image data of a sandy water body to invert sediment concentration space distribution; detecting slurry concentration data in a slurry pumping water tank, and detecting sediment concentration data at the corners of the test water tank; Closing the dredging assembly, the water supply system and the slurry pumping system; And the image data, the slurry concentration data and the sediment concentration data are led out to an upper computer so as to analyze the matching characteristics of the sediment fluidization phase change and the slurry making suction and discharge under the action of multidimensional disturbance.
2. The dredging test research method according to claim 1, wherein the target test condition comprises at least one of eight factors of nozzle number, jet flow rate, jet inclination, slurry pumping rate, reamer control, reamer rotation speed, reamer inclination, reamer extension length; Defining the jet flow velocity v 1 of the nozzle, wherein the jet flow velocity v 1 of the nozzle is calculated and determined by the following formula: Where Q 1 is the water supply flow rate indicated by the turbine flow meter on the water supply line, n is the number of nozzles, and r 1 is the radius of the nozzles.
3. The dredging test study method according to claim 2, wherein the pumping rate is defined as v 2 , and the pumping rate v 2 is calculated and determined by the following formula: Wherein Q 2 is the water supply flow rate displayed by a turbine flowmeter on the pulp pumping pipeline, and r 2 is the radius of the pulp pumping pipeline.
4. The dredging test study method according to claim 2, wherein each factor of the target test condition is designed to 3 levels, and the number of test groups is determined according to the following orthogonal table: Wherein L represents the orthogonal table, n is the number of test groups, m is the horizontal number of each factor of the target test working condition, and k is the maximum number of schedulable factors; determining the n minimum scale of the orthogonal table according to degrees of freedom: Single-factor degree of freedom: Total degrees of freedom: thus, the orthogonal table uses L 16 (3 8 ), the number of test groups is 16.
5. The dredging test study method according to claim 1, further comprising, prior to the step of setting the target test condition: and installing a hydraulic model for researching the matching characteristics of sediment phase change and slurry suction and discharge.
6. A dredging test research apparatus for performing a dredging test research method according to any one of claims 1-5, wherein the dredging test research apparatus comprises: A frame; A test water tank for accommodating sludge; a dredging assembly arranged on the frame and above or in the test water tank for disturbing the sediment to form liquid phase slurry and sucking and discharging the liquid phase slurry, and The image collector is arranged on one side of the test water tank and is used for collecting images of a diffusion process of sediment liquid phase slurry and a sand-containing water body in the dredging and slurry sucking processes of the dredging assembly.
7. The dredging test research apparatus according to claim 6, wherein the dredging assembly comprises a dredging reamer mechanism movably disposed on the frame in at least a first direction, the first direction being a length direction, a width direction or a height direction of the test water tank; The dredging reamer mechanism comprises a reamer motor and a reamer, wherein the reamer motor is arranged on the frame and connected with the reamer through a power supply pipeline, the reamer motor is used for driving the reamer to rotate, the reamer is provided with an adjusting knob, and the adjusting knob is used for adjusting the extending length of the reamer.
8. The dredging test research apparatus according to claim 7, wherein the dredging reamer mechanism is disposed on the frame through a position adjusting mechanism, the position adjusting mechanism comprises a support rod and pulleys disposed at two ends of the support rod, the power supply pipeline is mounted on the support rod through a fixing block, two ends of the support rod are slidably disposed on a cross rod of the frame through the pulleys, and the cross rod extends along a length direction and/or a width direction of the test water tank.
9. The dredging test research apparatus according to claim 7, wherein the dredging assembly comprises a suction mechanism, the suction mechanism comprises an anti-diffusion screen cover, a slurry discharging pipeline and a slurry pumping pump, a slurry pumping port is formed in the middle of the anti-diffusion screen cover, the slurry pumping port is communicated with a liquid inlet end of the slurry pumping pump through the slurry discharging pipeline, and a liquid outlet end of the slurry pumping pump is communicated with a slurry pumping water tank or an external container.
10. The dredging test research apparatus according to claim 9, wherein the dredging assembly further comprises a water spraying mechanism, the water spraying mechanism comprises a water supply pipe, a water supply pump and a plurality of nozzles, a water inlet end of the water supply pump is communicated with a water storage tank or an external water supply container, a water outlet end of the water supply pump is communicated with a plurality of the nozzles through the water supply pipe, and a plurality of the nozzles are located in the diffusion preventing screen.

Description

Research device and method for sludge fluidization phase change and slurry making suction and discharge matching characteristics Technical Field The invention relates to the technical field of hydraulic engineering, in particular to a dredging test research device and method for sludge logistics phase change and slurry making suction and discharge matching characteristics under the action of multidimensional disturbance. Background Silt accumulation becomes a limiting factor affecting the normal functioning of small and medium-sized reservoirs in various watercourses in partial areas. A large amount of sediment is deposited in the reservoir, so that the reservoir capacity of the reservoir is lost, and various functions and comprehensive effects of the reservoir are affected. The method is influenced by factors such as geographical position, functional condition and surrounding human activities, and the like, the composition and the spatial distribution form of small and medium-sized reservoir sediments are various, for example, viscous sediments in a water-choking area in front of a dam are easy to form solidified and compact hardened sediment sediments, manual disturbance strength is high during dredging and pulping, coarse particle pebbles at the backwater tail end of a valley-type reservoir are deposited in a large number, the particle size of the sediment is small in front of the dam, part of coarse particles are easy to transfer to the front of the dam during flood discharge and sediment discharge, the sediment sediments with graded broken are formed, and the reservoir areas of part of reservoirs are distributed with fish ponds, lotus ponds and other cultivation industry, and the sediment contains a large amount of organic matters, branch water grass and other flexible substances. At present, the middle and small reservoirs are mainly dredged in a manual dredging mode, for example, solid-phase sediments in the reservoirs are fluidized by a reamer in a disturbance mode by manual work, the solid-phase sediments are converted into liquid-phase slurry, and the phase change process of the sediments is a key link of dredging the reservoirs. In a related art, in numerical simulation and physical model test of sludge phase change and slurry making suction and discharge matching characteristics, the physical model test mainly adopts a single disturbance mode such as reamer disturbance, so that the phase change and slurry making suction and discharge matching characteristics of the sludge under the action of multidimensional disturbance are difficult to simulate, and the simulation effect is very general. Disclosure of Invention The invention mainly aims to provide a dredging test research device and method for sludge logistics phase change and slurry making suction and discharge matching characteristics under the action of multidimensional disturbance, and aims to realize the effects of simulating the phase change and slurry making suction and discharge matching characteristics of sludge under the action of multidimensional disturbance, researching dredging and slurry making and suction and discharge processes under the multidimensional disturbance conditions of different angles, different heights and different flow rates, realizing the rapid setting of different research working conditions and improving the simulation effect. In order to achieve the above purpose, the invention provides a dredging test research method for the matching characteristics of sediment fluidization phase change and slurry making suction and discharge under the action of multidimensional disturbance, which comprises the following steps: setting a target test working condition; Adding sediment and water into a test water tank according to the target test working condition, and submerging a slurry pumping port of a dredging component in the test water tank; adjusting the water supply flow of a water supply system to a preset water supply flow value, adjusting the pulp pumping flow of a pulp pumping system to a preset pulp pumping flow value, adjusting the reamer rotating speed of the dredging assembly to a preset rotating speed value and adjusting the reamer position to a target working position; Simultaneously, collecting image data of a sediment liquid phase slurry diffusion process in the dredging and slurry pumping process of the dredging assembly to calculate a slurry diffusion rate, and collecting multispectral image data of a sandy water body to invert sediment concentration space distribution; detecting slurry concentration data in a slurry pumping water tank, and detecting sediment concentration data at the corners of the test water tank; Closing the dredging assembly, the water supply system and the slurry pumping system; And the image data, the slurry concentration data and the sediment concentration data are led out to an upper computer so as to analyze the matching characteristics of the sediment fluidization phase change a