CN204945001U - A kind of test unit of lab simulation rainfall infiltration - Google Patents

A kind of test unit of lab simulation rainfall infiltration Download PDF

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Publication number
CN204945001U
CN204945001U CN201520732401.6U CN201520732401U CN204945001U CN 204945001 U CN204945001 U CN 204945001U CN 201520732401 U CN201520732401 U CN 201520732401U CN 204945001 U CN204945001 U CN 204945001U
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China
Prior art keywords
earth pillar
pillar cylinder
test unit
lab simulation
rainer
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Expired - Fee Related
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CN201520732401.6U
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Chinese (zh)
Inventor
张健
陈建生
詹泸成
黄德文
张家甫
张敬锋
张培
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Hohai University HHU
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Hohai University HHU
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Priority to CN201520732401.6U priority Critical patent/CN204945001U/en
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Abstract

The utility model discloses a kind of test unit of lab simulation rainfall infiltration, comprising: earth pillar cylinder, the rainer being installed on described earth pillar cylinder top, the water filling device be connected by the first conduit with rainer, the water sample gathering-device being installed on earth pillar cylinder bottom, for the data collector of measuring soil moisture content and the power supply of powering to data collector; Data collector comprises the many groups of time-domain reflectomers along earth pillar cylinder genesis analysis, and it is inner to gather water percentage data that three probes of time-domain reflectomer stretch into soil, pops one's head in, through signal wire, test data is transferred to collector.Usefulness is: the test unit that lab simulation rainfall of the present utility model is infiltrated in unsaturated soil, structure is simple, easy and simple to handle, this device can be closed completely, without special border, further, can also ensure that three probes of time-domain reflectomer (TDR) are in same depth of soil, thus ensure that the accurate of measurement result, reduce the error of simulation test.

Description

A kind of test unit of lab simulation rainfall infiltration
Technical field
The utility model relates to a kind of test unit of lab simulation rainfall infiltration, for studying the Infiltration Law of precipitation in unsaturated soil, belongs to soil-water environment experimental test field.
Background technology
The law study that precipitation infiltrates in unsaturated soil to urban afforestation, control flood and drain flooded fields, each side such as agricultural production has great significance.The research of infiltrating in unsaturated soil to precipitation is for a long time mainly based on simulation laboratory test, more or less all there are some problems, not that closed, test unit has special border etc. as do not carried out Real-Time Monitoring, test unit to experimentation, the accuracy of these factors influence test, cause test findings and actual conditions difference larger.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is the test unit providing a kind of lab simulation rainfall to infiltrate in unsaturated soil.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
A test unit for lab simulation rainfall infiltration, comprising: for hold the earth pillar cylinder of the open at both ends of unsaturated soil, the rainer being installed on described earth pillar cylinder top, the water filling device be connected by the first conduit with described rainer, the water sample gathering-device being installed on described earth pillar cylinder bottom, for the data collector of measuring soil moisture content and the power supply of powering to data collector; Described data collector comprises the many groups of time-domain reflectomers along earth pillar cylinder genesis analysis, and it is inner to gather water percentage data that three probes of described time-domain reflectomer stretch into soil, pops one's head in, through signal wire, test data is transferred to collector.
Preferably, aforementioned water filling device is geneva bottle with a scale, thus can Simulated rainfall according to demand.
Preferably, aforementioned rainer is flush-mounted in the top of earth pillar cylinder, and offers multiple rainfall hole in the bottom of rainer, and the top of rainer has an outer eaves to close earth pillar cylinder top better, described rainfall hole place is provided with syringe needle, and rainfall falls from syringe needle.
More preferably, aforementioned water sample gathering-device comprises: be installed on the porous plate of earth pillar cylinder bottom, the artificial cloth be covered on porous plate, the water storage container that is positioned at the water deflector below porous plate and is communicated with by the second conduit with water deflector, the setting of artificial cloth can prevent the aperture of porous plate from being blocked by soil sample, also can not affect rainwater simultaneously and flow into smoothly in water deflector.
Particularly, aforementioned earth pillar cylinder is made up of organic glass.
Further, the shape of cross section of aforementioned earth pillar cylinder is kidney-shaped, and comprise the half-round that rectangular portion and symmetry are divided into rectangular portion both sides, the interior diameter of described half-round is 15cm, and the length of rectangular portion is 5cm, and earth pillar cylinder height is 100cm.
More preferably, aforementioned multiple time-domain reflectomer is installed on the outer wall of rectangular portion, the height at distance earth pillar cylinder top is respectively: 19.5cm, 27cm, 37cm, 52cm, 67cm, 82cm, to study the burning into sand layer of different gradation to the impact of precipitation Infiltration Law in unsaturated soil.
Usefulness of the present utility model is: the test unit that lab simulation rainfall of the present utility model is infiltrated in unsaturated soil, structure is simple, easy and simple to handle, this device can be closed completely, without special border, further, can also ensure that three probes of time-domain reflectomer (TDR) are in same depth of soil, thus ensure that the accurate of measurement result, reduce the error of simulation test.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the test unit of a kind of lab simulation rainfall infiltration of the present utility model;
Fig. 2 is cross-sectional structure schematic diagram embodiment illustrated in fig. 1.
The implication of Reference numeral in figure: 1, earth pillar cylinder, 101, rectangular portion, 102, half-round, 2, rainer, 3, syringe needle, the 4, first conduit, 5, water filling device, 501, scale, 6, power supply, 7, time-domain reflectomer, 701, probe, 8, signal wire, 9, collector, 10, porous plate, 11, artificial cloth, 12, water deflector, the 13, second conduit, 14, water storage container.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the utility model.
See Fig. 1, the test unit of lab simulation rainfall infiltration of the present utility model, comprising: for hold the earth pillar cylinder 1 of the open at both ends of unsaturated soil, the rainer 2 being installed on earth pillar cylinder 1 top, the water filling device 5 be connected by the first conduit 4 with rainer 2, the water sample gathering-device being installed on earth pillar cylinder 1 bottom, for the data collector of measuring soil moisture content and the power supply 6 of powering to data collector.
In the present embodiment, as shown in Figure 2, the shape of cross section of earth pillar cylinder 1 is kidney-shaped, comprise the half-round 102 that rectangular portion 101 and symmetry are divided into rectangular portion 101 both sides, the interior diameter of half-round 102 is 15cm, and the length of rectangular portion 101 is 5cm, and the whole height of earth pillar cylinder 1 is 100cm.Data collector comprises the many groups of time-domain reflectomers 7 along earth pillar cylinder 1 genesis analysis, in order to ensure time-domain reflectomer 7(TDR) three probes 701 be in same depth of soil, as shown in Figure 2, multiple time-domain reflectomer 7 is installed on the outer wall of rectangular portion 101, three probes 701 of time-domain reflectomer 7 stretch into soil inside to gather water percentage data, and test data is transferred to collector 9 through signal wire 8 by probe 701.In the present embodiment, 6 time-domain reflectomers 7 are respectively apart from the height at earth pillar cylinder 1 top: 19.5cm, 27cm, 37cm, 52cm, 67cm, 82cm, to study the burning into sand layer of different gradation to the impact of precipitation Infiltration Law in unsaturated soil.
Particularly, water filling device 5 is the geneva bottle of with a scale 501, thus can Simulated rainfall according to demand.Rainer 2 is flush-mounted in the top of earth pillar cylinder 1, and offer multiple rainfall hole in the bottom of rainer 2, the top of rainer 2 has an outer eaves to close earth pillar cylinder 1 top better, and rainfall hole place is provided with syringe needle 3, rainfall falls from syringe needle 3, has more real simulate effect.
Water sample gathering-device comprises: the porous plate 10(thickness being installed on earth pillar cylinder 1 bottom is 25cm), the artificial cloth 11 be covered on porous plate 10, the water storage container 14 that is positioned at the water deflector 12 below porous plate 10 and is communicated with by the second conduit 13 with water deflector 12, the setting of artificial cloth 11 can prevent the aperture of porous plate 10 from being blocked by soil sample, also can not affect rainwater to flow into smoothly in water deflector 12, the water infiltrating into bottom is collected in water storage container 14 simultaneously.
In order to understand the utility model better, the operating process of this test unit is summarized as follows:
(1) before on-test, subjects (soil body of certain grating) is ready to, an artificial cloth 11 is covered above porous plate 10, then be filled in the corresponding layer position of earth pillar cylinder 1 according to the packing of setting in test, fill in process according to shown in Fig. 1, install moisture percentage measuring apparatus---time-domain reflectomer 7, and be connected to collector 9 with signal wire 8;
(2) by shown in Fig. 1, rainer 2 is installed to the top of earth pillar cylinder 1, connects the water filling device 5 put and put in place with the first conduit 4, water sample gathering-device water deflector 12 is connected with water storage container 14 by earth pillar cylinder 1 lower end the second conduit 13;
(3) during on-test, deionized water is added in water filling device 5, precipitation intensity in rainer 2 is met the demands and water potential was stablized constant in one minute, make rainer 2 keep this water level constant by water filling device 5, then collector 9 plug is inserted into 220v power supply 6;
(4) experimentally require to determine precipitation intensity and time, certainly, need before experiment to determine the relation between water filling device 5 water level and rainfall intensity.Keep syringe needle 3 number of rainer 2 constant, select different water level, calculate corresponding rainfall intensity, draw " water level one rainfall intensity " image, the two becomes positive correlation, can fit to straight line, determines water filling device 5 water level accordingly;
(5) because Water Transport speed in unsaturated soil is comparatively slow, study in rainfall and the experimental phenomena in latter two stage of rainfall and rule, experiment generally will continue some months.
To sum up, the test unit that lab simulation rainfall of the present utility model is infiltrated in unsaturated soil, structure is simple, easy and simple to handle, this device can be closed completely, without special border, further, time-domain reflectomer 7(TDR can also be ensured) three probes 701 be in same depth of soil, thus ensure that the accurate of measurement result, reduce the error of simulation test.
More than show and describe ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the utility model in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection domain of the present utility model.

Claims (10)

1. the test unit of a lab simulation rainfall infiltration, it is characterized in that, comprising: for hold the earth pillar cylinder of the open at both ends of unsaturated soil, the rainer being installed on described earth pillar cylinder top, the water filling device be connected by the first conduit with described rainer, the water sample gathering-device being installed on described earth pillar cylinder bottom, for the data collector of measuring soil moisture content and the power supply of powering to data collector; Described data collector comprises the many groups of time-domain reflectomers along earth pillar cylinder genesis analysis, and it is inner to gather water percentage data that three probes of described time-domain reflectomer stretch into soil, pops one's head in, through signal wire, test data is transferred to collector.
2. the test unit of a kind of lab simulation rainfall infiltration according to claim 1, is characterized in that, described water filling device is geneva bottle with a scale.
3. the test unit of a kind of lab simulation rainfall infiltration according to claim 1, it is characterized in that, described rainer is flush-mounted in the top of earth pillar cylinder, and offers multiple rainfall hole in the bottom of rainer.
4. the test unit of a kind of lab simulation rainfall infiltration according to claim 3, is characterized in that, the top of described rainer has an outer eaves with closed earth pillar cylinder top.
5. the test unit of a kind of lab simulation rainfall infiltration according to claim 3, is characterized in that, described rainfall hole place is provided with syringe needle.
6. the test unit of a kind of lab simulation rainfall infiltration according to claim 1, it is characterized in that, described water sample gathering-device comprises: be installed on the porous plate of earth pillar cylinder bottom, the artificial cloth be covered on porous plate, the water storage container that is positioned at the water deflector below porous plate and is communicated with by the second conduit with water deflector.
7. the test unit of a kind of lab simulation rainfall infiltration according to claim 1, is characterized in that, described earth pillar cylinder is made up of organic glass.
8. the test unit of a kind of lab simulation rainfall infiltration according to any one of claim 1-7, is characterized in that, the shape of cross section of described earth pillar cylinder is kidney-shaped, comprises the half-round that rectangular portion and symmetry are divided into rectangular portion both sides.
9. the test unit of a kind of lab simulation rainfall infiltration according to claim 8, is characterized in that, the interior diameter of described half-round is 15cm, and the length of rectangular portion is 5cm, and earth pillar cylinder height is 100cm.
10. the test unit of a kind of lab simulation rainfall infiltration according to claim 8, it is characterized in that, described multiple time-domain reflectomer is installed on the outer wall of rectangular portion, the height at distance earth pillar cylinder top is respectively: 19.5cm, 27cm, 37cm, 52cm, 67cm, 82cm, to study the burning into sand layer of different gradation to the impact of precipitation Infiltration Law in unsaturated soil.
CN201520732401.6U 2015-09-21 2015-09-21 A kind of test unit of lab simulation rainfall infiltration Expired - Fee Related CN204945001U (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910975A (en) * 2016-06-25 2016-08-31 西安科技大学 Snow-melting infiltration simulation system and unsaturated infiltration coefficient determination method
CN105911257A (en) * 2016-06-25 2016-08-31 西安科技大学 Multi-state undisturbed soil column infiltration simulation system and unsaturated osmotic coefficient determination method
CN105929138A (en) * 2016-06-25 2016-09-07 西安科技大学 Coal gangue leachate melting and infiltration soil column simulation system and characteristic parameter determination method
CN106018747A (en) * 2016-06-25 2016-10-12 西安科技大学 Coal gangue leachate infiltration soil column simulation system and characteristic parameter determination method
CN106018229A (en) * 2016-03-10 2016-10-12 长沙理工大学 Soil body seepage process and deformation characteristic test device and test method
CN106198341A (en) * 2016-06-25 2016-12-07 西安科技大学 Precipitation infiltration column simulation system and Unsaturated Hydraulic Conductivity assay method
CN106644835A (en) * 2016-12-08 2017-05-10 同济大学 Determining device and method of chloride ion vertical diffusion coefficient under different hydraulic gradients
CN106680466A (en) * 2017-02-06 2017-05-17 同济大学 Device for simulating soil groundwater oxygen content gradient distribution under hydrostatic condition
CN106771087A (en) * 2017-03-08 2017-05-31 河海大学 A kind of simulation rainfall in field analogue means and its application process
CN107144523A (en) * 2017-05-17 2017-09-08 上海理工大学 A kind of side slope experimental rig of simulated rainfall change in time and space
CN108931623A (en) * 2018-04-19 2018-12-04 中国地质大学(武汉) Study the bath scaled model experimental device of the soil-water characteristic curve of unsaturated soil under rainfall infiltration
CN109799180A (en) * 2019-03-18 2019-05-24 成都理工大学 A kind of device of Simulated soil columns rainfall infiltration overall process
CN110006785A (en) * 2019-04-03 2019-07-12 河海大学 A kind of dynamic auto monitoring device of soil water and salt transport
CN110487681A (en) * 2019-09-05 2019-11-22 西藏农牧学院 Rainfall infiltration experimental rig and its test method in a kind of multifunctional room

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106018229A (en) * 2016-03-10 2016-10-12 长沙理工大学 Soil body seepage process and deformation characteristic test device and test method
CN105911257A (en) * 2016-06-25 2016-08-31 西安科技大学 Multi-state undisturbed soil column infiltration simulation system and unsaturated osmotic coefficient determination method
CN105929138A (en) * 2016-06-25 2016-09-07 西安科技大学 Coal gangue leachate melting and infiltration soil column simulation system and characteristic parameter determination method
CN106018747A (en) * 2016-06-25 2016-10-12 西安科技大学 Coal gangue leachate infiltration soil column simulation system and characteristic parameter determination method
CN106198341A (en) * 2016-06-25 2016-12-07 西安科技大学 Precipitation infiltration column simulation system and Unsaturated Hydraulic Conductivity assay method
CN105910975A (en) * 2016-06-25 2016-08-31 西安科技大学 Snow-melting infiltration simulation system and unsaturated infiltration coefficient determination method
CN106644835A (en) * 2016-12-08 2017-05-10 同济大学 Determining device and method of chloride ion vertical diffusion coefficient under different hydraulic gradients
CN106644835B (en) * 2016-12-08 2019-10-18 同济大学 The measurement device and method of chloride ion vertical proliferation coefficient under different hydraulic gradients
CN106680466B (en) * 2017-02-06 2019-03-01 同济大学 A kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution
CN106680466A (en) * 2017-02-06 2017-05-17 同济大学 Device for simulating soil groundwater oxygen content gradient distribution under hydrostatic condition
CN106771087A (en) * 2017-03-08 2017-05-31 河海大学 A kind of simulation rainfall in field analogue means and its application process
CN107144523A (en) * 2017-05-17 2017-09-08 上海理工大学 A kind of side slope experimental rig of simulated rainfall change in time and space
CN107144523B (en) * 2017-05-17 2019-12-03 上海理工大学 A kind of side slope experimental rig of simulated rainfall change in time and space
CN108931623A (en) * 2018-04-19 2018-12-04 中国地质大学(武汉) Study the bath scaled model experimental device of the soil-water characteristic curve of unsaturated soil under rainfall infiltration
CN109799180A (en) * 2019-03-18 2019-05-24 成都理工大学 A kind of device of Simulated soil columns rainfall infiltration overall process
CN110006785A (en) * 2019-04-03 2019-07-12 河海大学 A kind of dynamic auto monitoring device of soil water and salt transport
CN110487681A (en) * 2019-09-05 2019-11-22 西藏农牧学院 Rainfall infiltration experimental rig and its test method in a kind of multifunctional room

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Granted publication date: 20160106

Termination date: 20180921