CN113670954A - Indoor test device for researching water content change rule of garbage soil degradation process - Google Patents
Indoor test device for researching water content change rule of garbage soil degradation process Download PDFInfo
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- CN113670954A CN113670954A CN202110987480.5A CN202110987480A CN113670954A CN 113670954 A CN113670954 A CN 113670954A CN 202110987480 A CN202110987480 A CN 202110987480A CN 113670954 A CN113670954 A CN 113670954A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000002689 soil Substances 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 239000004746 geotextile Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000013307 optical fiber Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 2
- 238000011160 research Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to an indoor test device for researching water content change rule in garbage soil degradation process. The drainage pipe network is positioned at the bottom of the model box body and is used for collecting and discharging percolate of the model box body; the water filtering layer is positioned at the upper part of the drainage pipe network and comprises a gravel filtering layer positioned at the lower part and a geotextile filtering layer positioned at the upper part, and the upper part of the water filtering layer provides a placement space for the garbage soil to be researched; the TDR sensor and the temperature sensor are suspended in the model box body, and after the garbage soil to be researched is put into the model box body, the TDR sensor and the temperature sensor are buried in the garbage soil to be researched. The device can be used for indoor research on the change rule of the water content of the garbage soil in the degradation process.
Description
Technical Field
The invention belongs to the field of environmental rock and soil, and particularly relates to an indoor test device for researching the change rule of water content in the degradation process of garbage soil.
Background
With the development of national economy and the trend of people to good life, environmental rock and soil are more and more emphasized, wherein the standardized design and construction of the refuse landfill and the analysis and evaluation of the long-term stability performance of the existing refuse landfill are one of the important contents. The long-term stability of the refuse landfill is closely related to the moisture content of the refuse dump, and the moisture content of the refuse dump is related to the degradation process of the refuse soil, so that the change rule of the moisture content of the refuse soil in the degradation process needs to be researched. To address this problem, the present laboratory test apparatus was developed.
Disclosure of Invention
Aiming at the defects of the existing test equipment, the invention provides an indoor test device for researching the water content change rule of garbage soil in the degradation process, which is used for researching the water content change rule of the garbage soil in the degradation process indoors.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
an indoor test device for researching water content change rule in garbage soil degradation process comprises a model box body, a TDR sensor, a temperature sensor, a water filtering layer and a drainage pipe network;
armored optical fibers are uniformly distributed on the inner wall of the model box body and used for heating the model box body and controlling the model box body to be in a constant temperature state; the drainage pipe network is positioned at the bottom of the model box body and is used for collecting and discharging percolate of the model box body; the water filtering layer is positioned at the upper part of the drainage pipe network and comprises a gravel filtering layer positioned at the lower part and a geotextile filtering layer positioned at the upper part, and the upper part of the water filtering layer provides a containing space for the garbage soil to be researched; the TDR sensor and the temperature sensor are suspended in the model box body, and after the garbage soil to be researched is placed in the model box body, the TDR sensor and the temperature sensor are buried in the garbage soil to be researched.
Furthermore, an air outlet and a threading hole are formed in the top of the model box body, and the TDR sensor, the temperature sensor and the armored optical fiber penetrate out through the threading hole.
Furthermore, a water outlet hole is formed in the bottom of the side wall of one side of the model box body, a drainage pipe network discharges percolate through the water outlet hole in the bottom of the side wall of the model box body, and the percolate is collected by an external percolate collecting box.
Furthermore, the drain pipe of the drain pipe network is densely distributed with water permeable holes at equal intervals.
Furthermore, a switch valve is arranged at a water outlet hole at the bottom of the side wall of the model box body, and a gap between the switch valve and the water outlet hole is sealed.
Further, the geotextile filter layer is made of a non-woven fabric.
Compared with the existing test equipment, the test device provided by the invention has the following beneficial effects:
the existing indoor test research device for the water content of the garbage soil mainly focuses on the research on a water content testing method and precision, and the research on the change rule of the water content of the garbage soil along with time is not related, so that the research and development of the device can make up for the blank, and the indoor model test research on the change rule of the water content in the garbage soil degradation process is realized; meanwhile, the test device can control the temperature and study the influence of the temperature on the degradation process of the waste soil and the change rule of the water content of the waste soil.
Drawings
FIG. 1 is a three-dimensional schematic view of a test apparatus;
FIG. 2 is a schematic three-dimensional view of a drainage layer;
FIG. 3 is a three-dimensional schematic view of a drainage pipe network;
FIG. 4 is a diagram of distribution of armored optical fibers on the inner wall of the mold box.
Illustration of the drawings: 1-model box body, 2-TDR sensor, 3-temperature sensor, 4-water filtering layer, 5-drainage pipe network, 6-leachate collecting box, 7-exhaust port, 8-threading hole, 9-water outlet hole, 10-garbage soil, 11-gravel filter layer, 12-geotextile filter layer, 13-water permeable hole, 14-switch valve and 15-armored optical fiber.
Detailed Description
For further understanding of the contents of the present invention, the present invention will be described in detail with reference to examples, which are provided for the purpose of explanation and are not intended to limit the present invention.
Referring to the attached drawings 1-4, the indoor test device for researching the change rule of the water content in the garbage soil degradation process comprises: model box 1, TDR sensor 2, temperature sensor 3, drainage blanket 4, drainage pipe network 5 and filtration liquid collecting box 6.
The model box body 1 is provided with a drainage pipe network 5 and a water filtering layer 4 from the bottom to the top in sequence, then the upper space of the water filtering layer 4 is filled with garbage soil 10, and the upper parts of the TDR sensor 2 and the temperature sensor 3 are suspended at the top of the model box body 1. The top of the model box body 1 is provided with an exhaust port 7 and a threading hole 8, and the exhaust port 7 is used for exhausting gas generated in the degradation process of the waste soil 10; the threading hole 8 is used for leading the wires of the TDR sensor 2 and the temperature sensor 3 and the armored optical fiber 15 out of the model box body 1 so as to be accessed to a test instrument. After the garbage soil 10 is placed in the model box body 1, the TDR sensor 2 and the temperature sensor 3 are buried in the garbage soil 10 so as to measure the moisture content and the temperature of the garbage soil 10 at different moments and draw a change curve of the moisture content and the temperature along with time. For the present example, the cross-sectional dimensions of the model case 1 were 0.48m × 0.48m, and the case height was 1.2 m.
Armored optical fibers 15 are uniformly distributed on the inner wall of the model box body and are heated through an external heating system, so that the temperature inside the model box body 1 is controlled, and the temperature influence is researched.
A water outlet hole 9 is formed in the bottom of the side wall of one side of the model box body 1, so that a drainage pipe network 5 can discharge percolate through the water outlet hole 9, and the percolate is collected by a percolate collecting box 6; 9 departments of apopore set up switch valve 14, and switch valve 14 is connected with water drainage pipe network 5 to seal the gap between switch valve 14 and apopore 9 and handle, for this embodiment, adopt glass to glue and seal.
The water filtering layer 4 comprises two layers, wherein the lower layer is a gravel filtering layer 11, and the upper layer is a geotextile filtering layer 12. For the present embodiment, the crushed stone filter 11 is made of finely graded crushed soil, and the geotextile filter 12 is made of nonwoven geotextile.
The drain pipe network 5 is densely distributed with the water permeable holes 13 on the drain pipe at equal intervals. For the embodiment, a PVC pipe with the diameter of 25mm is used as a drainage pipe, and a drainage pipe network 5 is formed according to two transverse directions and four longitudinal directions; 1 water permeable hole 13 is arranged in each 5cm mode, the hole diameter is 1cm, and an electric drill is adopted for forming holes.
The principle of the invention is as follows: the electromagnetic waves can be reflected at interfaces of different media, and the TDR sensor based on the surface reflection method can effectively measure the reflection coefficient of the electromagnetic waves at the interface of the air section and the measured soil body; according to the interface reflection coefficient measured by the TDR sensor, the water content of the measured soil body can be obtained through conversion of a corresponding formula; and along with the change of time, the moisture content of the soil body changes, buries the TDR sensor in the soil body, can obtain the change rule of the moisture content of the soil body along with time in real time.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (6)
1. An indoor test device for researching water content change rule in garbage soil degradation process is characterized by comprising a model box body (1), a TDR sensor (2), a temperature sensor (3), a water filtering layer (4) and a drainage pipe network (5);
armored optical fibers (15) are uniformly distributed on the inner wall of the model box body (1) and are used for heating the model box body (1) and controlling the model box body to be in a constant temperature state; the drainage pipe network (5) is positioned at the bottom of the model box body (1) and is used for collecting and discharging percolate of the model box body (1); the water filtering layer (4) is positioned at the upper part of the drainage pipe network (5), the water filtering layer (4) comprises a gravel filtering layer (11) positioned at the lower part and a geotextile filtering layer (12) positioned at the upper part, and the upper part of the water filtering layer (4) provides a placement space for the garbage soil (10) to be researched; the TDR sensor (2) and the temperature sensor (3) are suspended in the model box body (1), and after the garbage soil (10) to be researched is placed in the model box body, the TDR sensor (2) and the temperature sensor (3) are buried in the garbage soil (10) to be researched.
2. The indoor test device for researching the water content change rule in the garbage soil degradation process according to claim 1, wherein the top of the model box body (1) is provided with an exhaust port (7) and a threading hole (8), and wires of the TDR sensor (2) and the temperature sensor (3) and the armored optical fiber (15) penetrate through the threading hole (8).
3. The indoor test device for researching the water content change rule in the garbage soil degradation process according to claim 1, wherein a water outlet hole (9) is formed in the bottom of one side wall of the model box body (1), a drainage pipe network (5) discharges percolate through the water outlet hole (9) in the bottom of the side wall of the model box body (1), and the percolate is collected by an external percolate collecting box (6).
4. The indoor test device for researching the change rule of the water content in the garbage soil degradation process as claimed in claim 1, wherein the water drainage pipes of the water drainage pipe network (5) are densely distributed with water permeable holes (13) at equal intervals.
5. The indoor test device for researching water content change rule in garbage soil degradation process according to claim 3, wherein a switch valve (14) is arranged at the water outlet hole (9) at the bottom of the side wall of the model box body (1), and a gap between the switch valve (14) and the water outlet hole (9) is sealed.
6. The indoor test device for researching water content change rule of garbage soil degradation process as claimed in claim 1, wherein the geotextile filter layer (12) is made of non-woven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110987480.5A CN113670954A (en) | 2021-08-26 | 2021-08-26 | Indoor test device for researching water content change rule of garbage soil degradation process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110987480.5A CN113670954A (en) | 2021-08-26 | 2021-08-26 | Indoor test device for researching water content change rule of garbage soil degradation process |
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| CN113670954A true CN113670954A (en) | 2021-11-19 |
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| CN202110987480.5A Pending CN113670954A (en) | 2021-08-26 | 2021-08-26 | Indoor test device for researching water content change rule of garbage soil degradation process |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000088737A (en) * | 1998-09-14 | 2000-03-31 | Kitagawa Iron Works Co Ltd | Method and device for measuring moisture content in construction waste soil |
| CN102435541A (en) * | 2011-11-11 | 2012-05-02 | 东南大学 | Time domain reflection technology-based moisture transport measuring device |
| 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 |
| CN108801888A (en) * | 2018-05-25 | 2018-11-13 | 昆明理工大学 | It degrades in a kind of organic soil room simulator |
| CN209673748U (en) * | 2019-01-17 | 2019-11-22 | 中国环境科学研究院 | House refuse Preliminary degradation imitative experimental appliance |
| CN210188018U (en) * | 2019-05-27 | 2020-03-27 | 广州正粤建设有限公司 | Municipal refuse landfill treatment structure |
| CN111208042A (en) * | 2020-02-07 | 2020-05-29 | 中国科学院武汉岩土力学研究所 | Device and method for inverting hydraulic parameters of unsaturated waste soil |
-
2021
- 2021-08-26 CN CN202110987480.5A patent/CN113670954A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000088737A (en) * | 1998-09-14 | 2000-03-31 | Kitagawa Iron Works Co Ltd | Method and device for measuring moisture content in construction waste soil |
| CN102435541A (en) * | 2011-11-11 | 2012-05-02 | 东南大学 | Time domain reflection technology-based moisture transport measuring device |
| 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 |
| CN108801888A (en) * | 2018-05-25 | 2018-11-13 | 昆明理工大学 | It degrades in a kind of organic soil room simulator |
| CN209673748U (en) * | 2019-01-17 | 2019-11-22 | 中国环境科学研究院 | House refuse Preliminary degradation imitative experimental appliance |
| CN210188018U (en) * | 2019-05-27 | 2020-03-27 | 广州正粤建设有限公司 | Municipal refuse landfill treatment structure |
| CN111208042A (en) * | 2020-02-07 | 2020-05-29 | 中国科学院武汉岩土力学研究所 | Device and method for inverting hydraulic parameters of unsaturated waste soil |
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