CN202648912U - Artificial rainfall radial flow soil water motion simulation experiment system - Google Patents

Artificial rainfall radial flow soil water motion simulation experiment system Download PDF

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Publication number
CN202648912U
CN202648912U CN 201220275888 CN201220275888U CN202648912U CN 202648912 U CN202648912 U CN 202648912U CN 201220275888 CN201220275888 CN 201220275888 CN 201220275888 U CN201220275888 U CN 201220275888U CN 202648912 U CN202648912 U CN 202648912U
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China
Prior art keywords
water
runoff
soil
holes
calculating
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Expired - Fee Related
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CN 201220275888
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Chinese (zh)
Inventor
叶爱中
漆建波
潘红梅
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Beijing Normal University
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Beijing Normal University
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Abstract

The utility model relates to an artificial rainfall radial flow soil water motion simulation experiment system. The artificial rainfall radial flow soil water motion simulation experiment system comprises an artificial rainfall device, a radial flow and soil water formation device, a drainage device and a runoff volume measuring and calculating device, wherein the artificial rainfall device comprises a water supply device and a raindrop formation device, the water supply device realizes water outlet intensity adjustment by employing a throttle valve and a flow velocity instrument, the raindrop formation device is a pipeline group with holes, the radial flow and soil water formation device is a vertical square container which is provided with a soil layer, the pipeline group with holes is at a top portion of the vertical container and can be adjusted up and down, a lower end of the soil layer in the square container is mounted with a steel frame with holes, a steel wire net used for filtering is arranged on the steel frame with the holes, a side wall of the square container is mounted with a water guide pipe which collects outlet water to the runoff volume measuring and calculating device, and the runoff volume measuring and calculating device carries out data processing and calculation by cooperatively employing a pressure transducer and a computer. The artificial rainfall radial flow soil water motion simulation experiment system has advantages of simple structure, portable convenience, high experiment efficiency, fast and accurate calculation and strong adaptability.

Description

A kind of rainmaking runoff soil water movement experimental system for simulating
Technical field
The utility model relates to the hydrology, soil relevant speciality experiment equipment field, specifically, relates to the experimental system for simulating of the motion conditions of rainfall formation and runoff yield thereof and the holard, particularly a kind of rainmaking runoff soil water movement experimental system for simulating.
Background technology
Water circulation is the tie of contact earth system " geosphere~biosphere~air sphere ".Because Global climate change is on complicacy and the uncertainty of the impact of precipitation, runoff and the regional water circulation system, and the uncertainty that causes water circulation system structure and model parameter in high pressure of human activities impact and the variation of basin underlying surface, so that the uncertain quantitative research of changing environment lower area distributed water circulating analog, becoming the great problem in science in the earth system science, also is the fundamental problems of application of regional water resources safety evaluation, sustainable utilization of water resource and the great demand of risk management.The geologic hazard frequent occurrences such as China's rubble flow in 2010, caused huge loss, wherein crucial reason is exactly that heavy rain has caused soil moisture excessive, and the unstable rubble flow that caused of supersaturation soil needs more people to recognize the process of precipitation runoff water circulation in order to reduce to lose.
The artificial rainmaking Runoff Simulation is precipitation in the research water circulation always, holds back, oozes down and one of soil water movement important way since mid-term in 20th century, effectively remedied the deficiency of observation natural rainfall Streamflow Data.All coming from the artificial rainmaking runoff that water globe writer and researcher do such as Ke M.J than " hillside hydrology " (English) book most contents of chief editor tests.The famous Liu Changming academician of China begins to have done a large amount of artificial rainmaking runoffs in the loess plateau in the sixties in 20th century and tests.Along with the impact of mankind's activity, vegetation, soil all constantly change again now, and hydrology research is still being done the experiment of artificial rainmaking runoff.
Traditional Man rainfall-runoff model major part all is to finish in the open air, the place of choosing is all very large, such as the artificial rainmaking runoff field experiment of Inst of Geographic Science and Resources, Chiense Academy of Sciences in the setting of Yi County, Hebei, maximum benefit is can be closer to real natural situation in the open air, simulation precision is high, problem is that experimental cost is high, and operation maintenance is inconvenient.Convenience for operation maintenance, a lot of colleges and universities and research institute have moved artificial rainmaking runoff instrument to indoor, have all set up the artificial rainmaking hall such as geographical institute of the Chinese Academy of Sciences with Hohai University, and the hall area surpasses 50 square meters, will make things convenient for much with respect to the field trial operation and maintenance, but cost is still very high.
Research emphasis to the artificial rainmaking instrument and equipment is to solve following several difficulties: at first be that raindrop form and raininess control, need to select different shower nozzle or precipitation apparatus, there are numerous scholars this to be carried out design and screening experiment before, the single spraying head of developing that has becomes the raininess rainfall simulator, also the someone has designed a piston type water injector, raininess and raindrop have effectively been controlled, Chinese Academy Of Sciences Institute Of Soil And Water Ministry Of Water Resources Conservation has developed the simulated rainfall machine, protecting the station at Yangling Shaanxi water installs and uses, but it is large that above-mentioned a few class device exists equipment volume, the problem that underaction and degree of accuracy are not high; Next is portable problem, and existing precipitation runoff equipment is nearly all not portable, and volume is excessive, and equipment is too much overweight, and the needs that Shenzhen has are installed to on-the-spot buying; The 3rd is slope change, and movably underlying surface design has all been adopted in indoor artificial rainmaking hall, and the trough of immediate shipment soil is liftable, but can only select the place of the different gradients to do experiment after outdoor; The 4th is runoff yield observation, and the employing electromagnetic flowmeter that has measures pipeline flow, and the HUB that adopts of geographical institute of the Chinese Academy of Sciences counts measurement of discharge.
From the above, mainly there is following some deficiency in existing rainfall simulation instrument: not portable, can't test on the spot at any time; Cost is high, is difficult to be used as classroom instruction and uses; Underaction, bad adaptability, different subject research purposes are different, and the design difference is large, such as the emphasis water droplet design that water is protected, the emphasis soil water movement design of soil.
Therefore need a kind of novel rainmaking runoff soil water movement experimental system for simulating of design, to address the above problem.
The utility model content
The purpose of this utility model is to propose a kind of rainmaking runoff soil water movement experimental system for simulating, has solved existing rainfall simulation experimental apparatus and has carried inconvenience, and cost is high, and the problem of bad adaptability.
For reaching this purpose, the utility model by the following technical solutions:
A kind of rainmaking runoff soil water movement experimental system for simulating comprises that artificial rain device, runoff and the holard form device, drainage arrangement, runoff yield measuring and calculating device, and described artificial rain device comprises that water supply installation and raindrop form device; Described water supply installation adopts water pump, and the output water pipe of described water pump is connected to raindrop and forms device, on the output water pipe of described water pump throttling valve and current meter is installed successively;
It is one group of pipeline group with holes that is installed in the artificial rain device upper end that described raindrop form device;
Described runoff and the holard form device and adopt a upright square container, and the container frame of described square container adopts ferrous materials, the vertical strut that a liftable is regulated respectively are installed on its four jiaos, and described vertical strut upper end has kept flat pipeline group with holes; Be provided with soil horizon in the described square container, described pipeline group with holes places directly over the square container, and the sidewall of described square container is equipped with row's lateral flow tubes;
Described drainage arrangement is arranged on the soil horizon bottom, and it consists of a woven wire that is installed in the steelframe with holes on the described container frame and places on it;
Described runoff yield measuring and calculating device is calculated effluent collection by the aqueduct that links to each other with described lateral flow tubes to measuring cup, described runoff yield measuring and calculating device adopts the electronics measuring and calculating, in described measuring cup bottom pressure transducer is housed, described pressure transducer is connected with single-chip microcomputer, and described single-chip microcomputer is connected to the computing machine of processing and showing for data.
As a preferred version, the sidewall of described square container is provided with a scale.
As further preferred version, on described and the aqueduct that lateral flow tubes links to each other filtrator is installed.
The utility model is simple in structure, and is easy to operate, with low cost, and is easy to carry, and raindrop form the device liftable and regulate, applying flexible, strong adaptability; Adopts pressure sensor is collected water yield signal, and adopts computer system to carry out data processing operation, and it is accurate, quick that experimental data is collected; The feed pipe place of water pump is equipped with control valve and current meter, the adjusting of being convenient to supply water, and steelframe with holes and the woven wire that install the bottom make draining more unobstructed, reach good experiment effect.
Description of drawings
Fig. 1 is the utility model one-piece construction synoptic diagram;
Fig. 2 is the soil horizon structural representation.
Among the figure:
1, water pump; 2, control valve; 3, current meter; 4, water pipe; 5, pipeline group with holes; 6, vertical strut; 7, lateral flow tubes; 8, container head; 9, container frame; 10, soil horizon; 101, stone; 11, filtrator; 12, computing machine; 13, single-chip microcomputer; 14, woven wire; 15, measuring cup; 16, pressure transducer; 17, scale; 18, aqueduct; 19, steelframe with holes.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
The one-piece construction synoptic diagram of a specific embodiment of the present utility model as shown in Figure 1, this experimental system for simulating comprises: artificial rain device, runoff and soil water movement finder and runoff yield measuring and calculating device, described artificial rain device comprises that water supply installation and raindrop form device, described water supply installation adopts water pump 1, the output water pipe 4 of described water pump 1 is connected to raindrop and forms device, and control valve 2 and current meter 3 are installed on the water pipe 4;
It is one group of pipeline group 5 with holes that described raindrop form device; Described runoff and soil water movement finder are a upright square container, chamber wall adopts transparent material, be convenient to observe inner case, the foursquare width in square container cross section is 500mm, square container bottom to the height of container head 8 is 700mm, it (mainly is sandy soil and stone that soil is housed in the described square container, also can load different soils according to the different experiments demand), the lower end of soil horizon 10 is provided with the steelframe with holes 19 that is fixedly mounted on the container frame 9 as shown in fig. 1, place a woven wire 14 on it, woven wire 14 adds the structure of steelframe 19 with holes as drainage arrangement, can make draining unobstructed, is more conducive to observe soil water movement;
Figure 2 shows that the structural representation at soil horizon 10 places, be added with stone 101 in soil horizon 10 bottoms, be placed with woven wire 14 on the described steelframe with holes 19 that is fixed on the container frame 9, help draining unimpeded.
Shown in Fig. 1, described pipeline group 5 with holes places directly over the container, and the sidewall of described square container is equipped with 8 lateral flow tubes 7 of a row, and described lateral flow tubes 7 external diameters are 2mm, and the spacing between each lateral flow tubes is 10mm; The container frame 9 of described square container adopts ferrous materials, the vertical strut 6 that a liftable is regulated respectively is installed on its four jiaos, and the pipeline group with holes 5 that described raindrop form device lies against on four vertical struts 6 of container top; The aperture of wherein said pipeline group with holes 5 has multiple different specification, can change according to the experiment needs, by the adjustment of current meter 3, can provide different rainfall intensities, satisfies the kinds of experiments demand.
Described runoff yield measuring and calculating device is calculated effluent collection by the aqueduct 18 that links to each other with described lateral flow tubes 7 to measuring cup 15, on the described aqueduct 18 filtrator 11 is installed; Described aqueduct 18 can adopt rubber hose.
The utility model adopts pressure sensor image data, carry out Data Collection and storage computing etc. by single-chip microcomputer 13 and computing machine 12, described pressure transducer 16 is installed in the bottom of measuring cup 15, described pressure transducer 16 is connected to single-chip microcomputer 13, and described single-chip microcomputer 13 is connected to the computing machine 12 of processing and showing for data.
The sidewall that described runoff and the holard form the square container of device is provided with a scale 17, is convenient to measure thickness of soil; Draw the lateral flow tubes 7 of Surface Runoff.
Pressure water level switching software system is installed in computing machine 12, and the pressure signal processing that the pressure transducer 16 that receives is sent is converted to water level signal, go forward side by side row operation and storage.
During concrete experiment, can in container, add as required the soil of dissimilar or level, as adding multi-layer Soil, can between each layer soil, water-filtering net be set, also can implant false grass at soil.
Concrete experimental procedure is as follows:
(1) in square container, places soil according to the experiment needs;
(2) connect lateral flow tubes 7 aqueduct 18 outward, and water pump 1 corresponding water pipe 4;
(3) vertical strut 6 is adjusted to suitable height, selects as required the pipeline group with holes 5 in suitable aperture, and place it on the vertical strut 6;
(4) regulate control valve 2 on the water pipe, open water pump 1 beginning and up draw water, the water yield of observing in the measuring cup 15 changes, and observes the curvilinear motion situation by the display screen of computing machine 12;
(5) arrangement, storage data are tested complete.
Experimental system of the present utility model is simple in structure, and is easy to operate, with low cost, and is easy to carry, and raindrop form the device liftable and regulate, applying flexible, strong adaptability; Adopts pressure sensor is collected water yield signal, and adopts the pressure water level switching software system of computer system to carry out the computing of signal boxcar data collection process, and it is accurate, quick that experimental data is collected; The feed pipe place of water pump is equipped with control valve and current meter, and the adjusting of being convenient to supply water reaches good experiment effect.

Claims (3)

1. a rainmaking runoff soil water movement experimental system for simulating comprises artificial rain device, runoff and holard formation device, drainage arrangement, runoff yield measuring and calculating device, it is characterized in that:
Described artificial rain device comprises that water supply installation and raindrop form device; Described water supply installation adopts water pump, and the output water pipe of described water pump is connected to raindrop and forms device, on the output water pipe of described water pump throttling valve and current meter is installed successively;
It is one group of pipeline group with holes that is installed in the artificial rain device upper end that described raindrop form device;
Described runoff and the holard form device and adopt a upright square container, and the container frame of described square container adopts ferrous materials, the vertical strut that a liftable is regulated respectively are installed on its four jiaos, and described vertical strut upper end has kept flat pipeline group with holes; Be provided with soil horizon in the described square container, described pipeline group with holes places directly over the square container, and the sidewall of described square container is equipped with row's lateral flow tubes;
Described drainage arrangement is arranged on the soil horizon bottom, and it consists of a woven wire that is installed in the steelframe with holes on the container frame and places on it;
Described runoff yield measuring and calculating device is calculated effluent collection by the aqueduct that links to each other with described lateral flow tubes to measuring cup, described runoff yield measuring and calculating device adopts the electronics measuring and calculating, in described measuring cup bottom pressure transducer is housed, described pressure transducer is connected with single-chip microcomputer, and described single-chip microcomputer is connected to the computing machine of processing and showing for data.
2. a kind of rainmaking runoff soil water movement experimental system for simulating according to claim 1 is characterized in that the sidewall of described square container is provided with a scale.
3. a kind of rainmaking runoff soil water movement experimental system for simulating according to claim 1 is characterized in that, on described and the aqueduct that lateral flow tubes links to each other filtrator is installed.
CN 201220275888 2012-06-12 2012-06-12 Artificial rainfall radial flow soil water motion simulation experiment system Expired - Fee Related CN202648912U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634538A (en) * 2015-02-03 2015-05-20 哈尔滨工业大学(威海) Experiment device for measuring flow resistance of flat panel
CN104198155B (en) * 2014-09-17 2017-02-15 山东大学 Device and method for approximate simulation of particle transport and permeable pavement blockage under runoff action
CN110132523A (en) * 2019-06-11 2019-08-16 中国科学院寒区旱区环境与工程研究所 A kind of air fairing of dust storm wind-tunnel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104198155B (en) * 2014-09-17 2017-02-15 山东大学 Device and method for approximate simulation of particle transport and permeable pavement blockage under runoff action
CN104634538A (en) * 2015-02-03 2015-05-20 哈尔滨工业大学(威海) Experiment device for measuring flow resistance of flat panel
CN110132523A (en) * 2019-06-11 2019-08-16 中国科学院寒区旱区环境与工程研究所 A kind of air fairing of dust storm wind-tunnel

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130102

Termination date: 20130612