CN110108861B - Indoor model test device for researching channel-based natural auxiliary heating rod - Google Patents
Indoor model test device for researching channel-based natural auxiliary heating rod Download PDFInfo
- Publication number
- CN110108861B CN110108861B CN201910463928.6A CN201910463928A CN110108861B CN 110108861 B CN110108861 B CN 110108861B CN 201910463928 A CN201910463928 A CN 201910463928A CN 110108861 B CN110108861 B CN 110108861B
- Authority
- CN
- China
- Prior art keywords
- water
- soil sample
- temperature
- channel
- detection devices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a test device for researching an indoor model of a channel-based natural auxiliary heating rod, belonging to the technical field of channels; a liquid water grid net is erected below the interior of the organic glass barrel, a soil sample is arranged in the organic glass barrel above the liquid water grid net, a channel lining layer is arranged on the upper surface of the soil sample, and the soil sample and the channel lining layer form a whole; a bottom temperature control hot plate is arranged at the bottom in the organic glass barrel below the liquid water grating net, and a liquid level switch is arranged at one end of a gap between the upper surface of the bottom temperature control hot plate and the lower surface of the liquid water grating net; a plurality of gravel hot rods are inserted in the soil sample; the soil sample is internally provided with a plurality of groups of moisture detection devices and temperature detection devices. The method is suitable for researching frost heaving damage of the concrete lining structure of the channel and disasters of hydraulic structures, buildings and roadbed engineering under similar conditions.
Description
Technical Field
The invention relates to the technical field of channels, in particular to a test device for researching an indoor model of a channel-based natural auxiliary heating rod.
Background
The 'hydrothermal coupling' in the foundation soil of the concrete lining channel in the drought and cold regions is the phenomenon that the water content of the surface of the soil body is increased and accumulated because the steam water and the liquid water cannot be discharged due to the closed surface layer lining concrete. The 'hydrothermal coupling' is a cause of frost heaving damage to canal base coarse-grained soil in northwest China. The irrigation area is located in a dry, semiarid and cold northwest cloisonne irrigation area, the underground water level of the irrigation area is low, the rainfall is rare, the upward migration range of the capillary action of the underground water after the treatment of replacing and filling coarse particles is limited, the underground water can hardly be directly supplemented to the soil body on the upper part of the canal base, the moisture (mainly vaporous water) in the shallow base soil is migrated to the upper part under the driving action of temperature gradient, and the vaporous water is gradually gathered and condensed into ice due to the lower temperature of the upper surface. In arid and semiarid northwest irrigation areas, the vaporous water migrates and is condensed and accumulated into ice at the upper part, the water content of the base soil is increased and the strength of the base soil is reduced under the repeated freeze-thaw cycle action, and finally, the frost heaving damage phenomenon of a lining structure occurs.
Disclosure of Invention
The invention aims to provide a test device for researching an indoor model of a channel-based natural auxiliary heating rod, which has the advantages of simple structure, reasonable design and convenient use, aims to research frost heaving damage of a concrete lining structure caused by gaseous water in channel coarse-particle foundation soil, and is suitable for researching the problems of hydraulic structure, building and roadbed engineering disasters under the frost heaving damage of the channel concrete lining structure and similar conditions.
In order to achieve the purpose, the invention adopts the technical scheme that: the device comprises a low-temperature test box, a radiation lamp, a water supplementing device, a bottom temperature control hot plate, a liquid level switch, a liquid water grid net, a temperature sensor, a moisture sensor, a broken stone hot rod, a channel lining layer and an organic glass barrel; a liquid water grid net is erected below the interior of the organic glass barrel, a soil sample is arranged in the organic glass barrel above the liquid water grid net, a channel lining layer is arranged on the upper surface of the soil sample, and the soil sample and the channel lining layer form a whole; a bottom temperature control hot plate is arranged at the bottom in the organic glass barrel below the liquid water grating net, and a liquid level switch is arranged at one end of a gap between the upper surface of the bottom temperature control hot plate and the lower surface of the liquid water grating net; a plurality of gravel hot rods are inserted in the soil sample; a plurality of groups of moisture detection devices and temperature detection devices are arranged in the soil sample, and each group of moisture detection devices is vertically arranged in the whole body from top to bottom by a plurality of moisture sensors; each group of temperature detection devices is vertically arranged in the whole by a plurality of temperature sensors; the water replenishing device is communicated with the bottom layer of the soil sample in the organic glass barrel; the organic glass barrel is arranged in the low-temperature test box, and a plurality of radiation lamps are fixed at the inner top of the low-temperature test box; the temperature sensor and the moisture sensor are both connected with the control terminal.
Furthermore, the water supplementing device consists of a water pump, a liquid level display, a water supplementing pipeline and a water supplementing tank; the water replenishing tank is arranged on one side of the organic glass barrel and is positioned in the low-temperature test box, a water pump is arranged at the bottom in the water replenishing tank, a water replenishing pipeline is connected to a water outlet of the water pump, and the lower end of the water replenishing pipeline penetrates through the soil sample and is arranged in a gap between the liquid water grid net and the bottom temperature control hot plate; the liquid level display is fixed on the upper part of the side wall of the water replenishing tank and is connected with the control terminal.
Furthermore, a gravel hot rod is vertically inserted in the middle of the soil sample, and the upper end of the gravel hot rod is exposed above the channel lining layer after passing through the channel lining layer; equal quantities of gravel hot rods are vertically inserted into slopes on the left side and the right side of the soil sample, and the upper ends of the gravel hot rods penetrate through the channel lining layer.
Furthermore, the plurality of groups of temperature detection devices are evenly distributed in the slopes on the left side and the right side of the whole body, and the number of the temperature sensors in each group of temperature detection devices is the same.
Furthermore, the quantity of the moisture detection devices inserted in the left slope of the whole body is larger than that of the moisture detection devices inserted in the right slope.
Further, the number of the moisture sensors in each set of moisture detection devices is the same.
The working principle of the invention is as follows: the method is characterized in that a vapor-state water supplementing device is arranged for a soil sample under the influence of capillary action removal, different temperature boundaries are applied to two ends of the soil sample, the conditions of water content and temperature change in the soil sample with different initial water content are explored under the driving of temperature gradient, the frost heaving mechanism and the influence factors of 'hydrothermal coupling' of irrigation ditch soil in a drought and cold region are disclosed, the frost heaving damage of a concrete lining structure caused by gaseous water in channel coarse-particle foundation soil is researched, and the method is suitable for the research of the disasters of hydraulic structures, buildings and roadbed engineering under the frost heaving damage of the channel concrete lining structure and similar conditions.
After adopting the structure, the invention has the beneficial effects that: the invention relates to a test device for researching an indoor model of a channel-based natural auxiliary heating rod, which is used for researching frost heaving damage of a concrete lining structure caused by gaseous water in channel coarse-grained foundation soil, is suitable for researching the problems of frost heaving damage of the channel concrete lining structure and disasters of hydraulic structures, buildings and roadbed engineering under similar conditions, and has the advantages of simple structure, reasonable arrangement, low manufacturing cost and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a cross-sectional view of the structure of the present invention.
Description of reference numerals:
the device comprises a low-temperature test box 1, a radiation lamp 2, a water supplementing device 3, a water pump 3-1, a liquid level display 3-2, a water supplementing pipeline 3-3, a water supplementing tank 3-4, a bottom temperature control hot plate 4, a liquid level switch 5, a liquid water grid net 6, a temperature sensor 7, a moisture sensor 8, a gravel hot rod 9, a channel lining layer 10 and an organic glass barrel 11.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the technical solution adopted by the present embodiment is: the device comprises a low-temperature test box 1, a radiation lamp 2, a water supplementing device 3, a bottom temperature control hot plate 4, a liquid level switch 5, a liquid water grid net 6, a temperature sensor 7, a moisture sensor 8, a gravel hot rod 9, a channel lining layer 10 and an organic glass barrel 11; a liquid water grid net 6 is erected below the interior of the organic glass barrel 11, a soil sample is arranged in the organic glass barrel 11 above the liquid water grid net 6, a channel lining layer 10 is arranged on the upper surface of the soil sample, and the soil sample and the channel lining layer 10 form a whole; a bottom temperature control hot plate 4 is arranged at the bottom in the organic glass barrel 11 below the liquid water grid net 6, and a liquid level switch 5 is arranged at one end of a gap between the upper surface of the bottom temperature control hot plate 4 and the lower surface of the liquid water grid net 6; a macadam hot bar 9 is vertically inserted in the middle of the soil sample, and the upper end of the macadam hot bar 9 is exposed above the channel lining layer 10 after passing through the channel lining layer 10; two gravel hot rods 9 are vertically inserted into slopes on the left side and the right side of the soil sample, and the upper ends of the gravel hot rods 9 penetrate through the channel lining layer 10; a group of water detection devices are arranged in the right slope of the whole body (the group of water detection devices is vertically arranged in the whole body by nine water sensors 8 and is numbered from W01 to W09), two groups of water detection devices are arranged in the left slope of the whole body, the two groups of water detection devices are vertically arranged in the whole body by nine water sensors 8 (the two groups of water detection devices are vertically arranged in the whole body by nine water sensors 8 and are numbered from W10 to W18 and from W19 to W28 respectively), two groups of temperature detection devices are arranged in the slopes on the left side and the right side of the whole body, and each group of temperature detection devices is vertically arranged in the whole body by nine temperature sensors 7 (the numbers are T01 to T09, T10 to T18, T19 to T27 and T28 to T36 respectively); each group of water detection devices is arranged adjacent to each group of temperature detection devices, wherein the temperature detection devices positioned on the slope edge of the slope on the right side are independently arranged, and the water supplementing device 3 consists of a water pump 3-1, a liquid level display 3-2, a water supplementing pipeline 3-3 and a water supplementing tank 3-4; the water replenishing tank 3-4 is arranged on one side of the organic glass barrel 11 and is positioned in the low-temperature test box 1, the bottom in the water replenishing tank 3-4 is provided with a water pump 3-1, the water outlet of the water pump 3-1 is connected with a water replenishing pipeline 3-3, and the lower end of the water replenishing pipeline 3-3 is arranged in a gap between the liquid water grid net 6 and the bottom temperature control hot plate 4 after penetrating through a soil sample; the liquid level display 3-2 is fixed on the upper part of the side wall of the water replenishing tank 3-4 and is connected with the control terminal; the organic glass barrel 11 is arranged in the low-temperature test box 1, and a plurality of radiation lamps 2 are fixed at the inner top of the low-temperature test box 1; the temperature sensor 7 and the moisture sensor 8 are both connected with a control terminal; the control terminal is a computer; the moisture sensor 8, the temperature sensor 7 and the liquid level display 3-2 are used for data acquisition through a data acquisition module in a computer.
Further, the low-temperature test box 1 is used for simulating the winter environmental temperature of the surface of the channel and providing freeze-thaw cycle conditions.
Further, the radiation lamp 2 is used for simulating the radiation change of the yin slope and the yang slope of the canal slope.
Further, the water replenishing device 3 is used for simulating the external water source replenishing condition under the condition of the channel open system.
Further, the bottom temperature control hot plate 4 is used for simulating an underground canal foundation soil heat source.
Further, the liquid level switch 5 is used for controlling the water replenishing amount, and the underground water level is guaranteed to be unchanged.
Further, the liquid water grid net 6 is used for preventing liquid water migration in the trench foundation soil and providing a vapor water migration condition.
Further, the temperature sensor 7 is used for monitoring temperature changes of different positions of a channel slope plate and a channel bottom.
Further, the moisture sensor 8 is used for monitoring the moisture content change of different positions of the channel slope plate and the channel bottom.
Furthermore, the macadam hot rod 9 is used for preparing macadam natural hot rods with different grades according to a hot rod principle, improving the solid-liquid phase change temperature of a hot rod refrigerant, a packaging tube structure and a burying process, and researching and developing geothermal temperature-increasing ice-melting auxiliary heating equipment suitable for a channel combining a ground source heat pump and a hot rod in a cold region.
The working principle of the specific embodiment is as follows: the method is characterized in that a vapor-state water supplementing device is arranged for a soil sample under the influence of capillary action removal, different temperature boundaries are applied to two ends of the soil sample, the conditions of water content and temperature change in the soil sample with different initial water content are explored under the driving of temperature gradient, the frost heaving mechanism and the influence factors of 'hydrothermal coupling' of irrigation ditch soil in a drought and cold region are disclosed, the frost heaving damage of a concrete lining structure caused by gaseous water in channel coarse-particle foundation soil is researched, and the method is suitable for the research of the disasters of hydraulic structures, buildings and roadbed engineering under the frost heaving damage of the channel concrete lining structure and similar conditions.
After adopting above-mentioned structure, this embodiment beneficial effect does: the invention relates to a test device for researching an indoor model of a channel-based natural auxiliary heating rod, which is used for researching frost heaving damage of a concrete lining structure caused by gaseous water in channel coarse-grained foundation soil, and is suitable for researching the disaster problems of hydraulic structures, buildings and roadbed engineering under the frost heaving damage of the channel concrete lining structure and similar conditions.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (1)
1. The utility model provides a research natural diathermy stick indoor model test device of assisting of trench base which characterized in that: the device comprises a low-temperature test box (1), a radiation lamp (2), a water supplementing device (3), a bottom temperature control hot plate (4), a liquid level switch (5), a liquid water grid net (6), a temperature sensor (7), a moisture sensor (8), a broken stone hot rod (9), a channel lining layer (10) and an organic glass barrel (11); a liquid water grid net (6) is erected below the interior of the organic glass barrel (11), a soil sample is arranged in the organic glass barrel (11) above the liquid water grid net (6), a channel lining layer (10) is arranged on the upper surface of the soil sample, and the soil sample and the channel lining layer (10) form a whole; a bottom temperature control hot plate (4) is arranged at the bottom in the organic glass barrel (11) below the liquid water grid net (6), and a liquid level switch (5) is arranged at one end of a gap between the upper surface of the bottom temperature control hot plate (4) and the lower surface of the liquid water grid net (6); a plurality of gravel hot rods (9) are inserted in the soil sample; a plurality of groups of moisture detection devices and temperature detection devices are arranged in the soil sample, and each group of moisture detection devices is vertically arranged in the whole body by a plurality of moisture sensors (8); each group of temperature detection devices is vertically arranged in the whole by a plurality of temperature sensors (7); the water supplementing device (3) is communicated with the bottom layer of the internal soil sample of the organic glass barrel (11); the organic glass barrel (11) is arranged in the low-temperature test box (1), and a plurality of radiation lamps (2) are fixed at the inner top of the low-temperature test box (1); the temperature sensor (7) and the moisture sensor (8) are both connected with a control terminal; the water supplementing device (3) consists of a water pump (3-1), a liquid level display (3-2), a water supplementing pipeline (3-3) and a water supplementing tank (3-4); the water replenishing tank (3-4) is arranged on one side of the organic glass barrel (11) and is positioned in the low-temperature test box (1), a water pump (3-1) is arranged at the bottom in the water replenishing tank (3-4), a water outlet of the water pump (3-1) is connected with a water replenishing pipeline (3-3), and the lower end of the water replenishing pipeline (3-3) is arranged in a gap between the liquid water grid net (6) and the bottom temperature control hot plate (4) after penetrating through a soil sample; the liquid level display (3-2) is fixed on the upper part of the side wall of the water replenishing tank (3-4) and is connected with the control terminal; a macadam hot bar (9) is vertically inserted in the middle of the soil sample, and the upper end of the macadam hot bar (9) is exposed above the channel lining layer (10) after passing through the channel lining layer (10); the equal number of gravel hot sticks (9) are vertically inserted into the slopes on the left side and the right side of the soil sample, and the upper ends of the gravel hot sticks (9) penetrate through the channel lining layer (10); the temperature detection devices are evenly distributed in the slopes on the left side and the right side of the whole body, and the number of the temperature sensors (7) in each temperature detection device is the same; the quantity of the moisture detection devices inserted in the left slope of the whole body is larger than that of the moisture detection devices inserted in the right slope; the number of the moisture sensors (8) in each group of moisture detection devices is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910463928.6A CN110108861B (en) | 2019-05-30 | 2019-05-30 | Indoor model test device for researching channel-based natural auxiliary heating rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910463928.6A CN110108861B (en) | 2019-05-30 | 2019-05-30 | Indoor model test device for researching channel-based natural auxiliary heating rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110108861A CN110108861A (en) | 2019-08-09 |
| CN110108861B true CN110108861B (en) | 2022-02-15 |
Family
ID=67493150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910463928.6A Expired - Fee Related CN110108861B (en) | 2019-05-30 | 2019-05-30 | Indoor model test device for researching channel-based natural auxiliary heating rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110108861B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115266810B (en) * | 2022-08-03 | 2023-05-05 | 哈尔滨工业大学 | Hot rod roadbed frost heaving test device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1603274A1 (en) * | 1988-03-28 | 1990-10-30 | Государственный гидрологический институт | Apparatus for investigating the process of heat transfer in frozen porous soils |
| CN102879552A (en) * | 2012-10-31 | 2013-01-16 | 河海大学 | Freeze thawing and frost heaving model test device and testing method thereof |
| CN204154664U (en) * | 2014-10-15 | 2015-02-11 | 中国科学院寒区旱区环境与工程研究所 | Soil sample freezing-thawing test device |
| CN107063933A (en) * | 2017-03-20 | 2017-08-18 | 北京航空航天大学 | A kind of " pot cover effect " test instrument |
| CN108844988A (en) * | 2018-05-22 | 2018-11-20 | 石家庄铁道大学 | Soil body steam migration follow-up mechanism and Tracing Experiment method under Freezing-Melting Condition |
| CN208476921U (en) * | 2018-01-29 | 2019-02-05 | 中铁二院工程集团有限责任公司 | A kind of ponding Frozen-thawed cycled effect simulation of permafrost region tunnel-liner behind part, monitoring device |
| CN109490350A (en) * | 2018-12-12 | 2019-03-19 | 石家庄铁道大学 | Ventilation type body frost heaving experimental rig and test method |
| CN109610562A (en) * | 2018-12-19 | 2019-04-12 | 北京航空航天大学 | A method of it collecting pot cover effect and generates water |
-
2019
- 2019-05-30 CN CN201910463928.6A patent/CN110108861B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1603274A1 (en) * | 1988-03-28 | 1990-10-30 | Государственный гидрологический институт | Apparatus for investigating the process of heat transfer in frozen porous soils |
| CN102879552A (en) * | 2012-10-31 | 2013-01-16 | 河海大学 | Freeze thawing and frost heaving model test device and testing method thereof |
| CN204154664U (en) * | 2014-10-15 | 2015-02-11 | 中国科学院寒区旱区环境与工程研究所 | Soil sample freezing-thawing test device |
| CN107063933A (en) * | 2017-03-20 | 2017-08-18 | 北京航空航天大学 | A kind of " pot cover effect " test instrument |
| CN208476921U (en) * | 2018-01-29 | 2019-02-05 | 中铁二院工程集团有限责任公司 | A kind of ponding Frozen-thawed cycled effect simulation of permafrost region tunnel-liner behind part, monitoring device |
| CN108844988A (en) * | 2018-05-22 | 2018-11-20 | 石家庄铁道大学 | Soil body steam migration follow-up mechanism and Tracing Experiment method under Freezing-Melting Condition |
| CN109490350A (en) * | 2018-12-12 | 2019-03-19 | 石家庄铁道大学 | Ventilation type body frost heaving experimental rig and test method |
| CN109610562A (en) * | 2018-12-19 | 2019-04-12 | 北京航空航天大学 | A method of it collecting pot cover effect and generates water |
Non-Patent Citations (2)
| Title |
|---|
| 寒区输水渠道衬砌与冻土相互作用的冻胀破坏试验研究;王羿等;《岩土工程学报》;20181031;第40卷(第10期);摘要、第1节 * |
| 混凝土衬砌渠道表面温度分布研究;马瑞忠;《陕西水利》;20160320(第2期);第59页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110108861A (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205384202U (en) | Rainfall infiltration law test system based on aqueous vapor two -phase flow | |
| CN203587588U (en) | Improved water-salt monitoring device for greenhouse soil | |
| CN109344547B (en) | Freezing method model design method and device under combined stratum seepage effect | |
| CN101096852B (en) | Method for anti-floating of underground building | |
| CN103454403B (en) | Soil erosion and nutrient migration simulating device applicable to Karst regions | |
| Murton et al. | Experimental design for a pilot study on bedrock weathering near the permafrost table | |
| CN106702952A (en) | Test device and method for simulating seepage condition of landslide of earth-rock dam | |
| CN108956386A (en) | The model test apparatus and method of organic pollutant migration in a kind of simulation seasonal frozen ground | |
| CN101451355A (en) | Water retention method of back fill course | |
| CN111735933A (en) | Ecological restoration tailing dam slope stability simulation test device and application thereof | |
| CN109709308A (en) | One kind adopting water type ground fissure physical model test device and test method | |
| CN107761910A (en) | Based on the technique constructed to storm sewer | |
| CN105606514A (en) | Method for performing water and salt migration experiment using cylinder device with independent temperature control at both ends | |
| CN108035397A (en) | A kind of collection method and irrigation system suitable for karst scar runoff | |
| CN110108861B (en) | Indoor model test device for researching channel-based natural auxiliary heating rod | |
| CN109424054A (en) | The technique constructed in construction to storm sewer | |
| CN109669025B (en) | Simulation experiment device and method for improving red soil by using biomass charcoal | |
| CN103336105B (en) | Soft foundation treatment experiment device and method | |
| CN205157553U (en) | Frozen soil body temperature degree moisture movement test instrument | |
| CN208888099U (en) | A kind of experimental provision that the migration of simulation water sand influences seam mining subsidence | |
| CN206385495U (en) | A kind of earth and rockfill dam landslide observed seepage behavior simulation test device | |
| CN202133659U (en) | Experimental device for monitoring swelling-shrinkage deformation of deep soil under influence of hot rainy weather | |
| CN207601081U (en) | A kind of multifunctional earth model assay systems | |
| He et al. | Moisture transfer and phase change in unsaturated soils: an experimental study of two types of canopy effect | |
| CN108934703A (en) | A kind of method of water-retaining film package sand Desert Control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220215 |