CN214374089U - Soil body capillary water lifting law testing arrangement - Google Patents
Soil body capillary water lifting law testing arrangement Download PDFInfo
- Publication number
- CN214374089U CN214374089U CN202120163030.XU CN202120163030U CN214374089U CN 214374089 U CN214374089 U CN 214374089U CN 202120163030 U CN202120163030 U CN 202120163030U CN 214374089 U CN214374089 U CN 214374089U
- Authority
- CN
- China
- Prior art keywords
- soil
- water
- capillary
- water supply
- transparent sleeve
- 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.)
- Active
Links
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a soil body capillary water lifting law testing arrangement belongs to ground test technical field to solve the problem that groundwater capillary lifting law test lacks professional equipment in the natural soil body around the soil vestige. The device comprises a water supply system, a capillary tube main body and a detection system, wherein the water supply system comprises a water supply tank; the capillary tube main body comprises at least two transparent sleeves connected from bottom to top, each transparent sleeve is provided with at least 3 groups of jacks, the lower part of the transparent sleeve at the lowest part is immersed under the liquid level of the water supply tank, the upper end and the lower end of the transparent sleeve are provided with flanges, and the flange at the bottom of the transparent sleeve at the lowest part is a bottom flange with a plurality of water filtering channels; the detection system comprises a detection host and a plurality of soil moisture sensors which are connected with each other, and the soil moisture sensors are matched with the jacks. The utility model discloses combine together with the engineering reality, more accord with experimental original intention, better achievement experiment purpose.
Description
Technical Field
The utility model belongs to the technical field of the ground test, concretely relates to soil body capillary water lifting law testing arrangement.
Background
In historical cultural heritage protection, the wooden structure of the traditional Chinese building mainly based on civil construction is destroyed in the long-term historical process, a large amount of earthen construction relics are left, and the life of the earthen sites is very fragile. A large number of research results discover that: the diseases such as efflorescence and peeling, weathering denudation, water seepage, wall cracking and even collapse of the ancient city wall structure are frequently rare. The main reason for this kind of disease is that rainfall or groundwater infiltrates into the interior of ancient city wall for thousands of years, leads to the inside fine viscidity granule and the soluble salt of rammed earth of city wall to run off, forms the seepage flow passageway, and then causes the inside water content of rammed earth body and brickwork outer wall to rise gradually, and the bearing capacity reduces gradually, and ancient city wall basis takes place to soften, produces inhomogeneous settlement and leads to wall body fracture and a series of water damage.
As the earthen site is non-renewable, the earthen site becomes a history once being damaged and becomes a permanent loss for human beings, so that the ancient architecture needs to be protected carefully and cannot be promoted in a warehouse. The preservation of the earthen site is restricted by the natural environment, various diseases of the site are all generated under the influence of factors such as engineering geology, hydrogeology and environment where the site is located, and the existence of the site and the surrounding environment have an inseparable relationship.
The natural soil body around the soil relic has low strength and poor water stability, if the artificial modified soil can be prepared, the problem of capillary lifting of underground water, which is the root cause of the soil relic disease, is solved, the influence of the artificial modified soil on the soil relic is deeply researched, and the corresponding construction measures and maintenance methods can well protect the soil relic.
Because the geographical position of each soil relic is different, the engineering geology, the hydrogeology and the environmental factors are different, and special matched equipment capable of testing in time is lacked when the influence of the capillary lifting of underground water on the foundation soil of the historic building and the disease mechanism generated by the influence are researched.
In the prior art, the test equipment and the method for the capillary water rise height have the following defects:
1. water supply systems are susceptible to external environmental influences;
2. the measurement parameters are not complete, and only the rising height and the rising speed of the capillary water can be measured;
3. the test equipment is difficult to disassemble, can only be measured in a laboratory, and cannot adapt to variable test environments.
Based on the above background art, a device for testing the lifting rule of the soil capillary water is developed by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a soil body capillary water lifting law testing arrangement to solve the problem that groundwater capillary lifting law test lacks professional equipment in the natural soil body around the soil vestige.
In order to solve the above problems, the utility model discloses technical scheme does:
a soil body capillary water lifting law testing device comprises a water supply system, a capillary tube main body and a detection system.
The water supply system comprises a water supply tank;
the capillary tube main body comprises at least two transparent sleeves connected from bottom to top, each transparent sleeve is provided with at least 3 groups of jacks, the lower part of the transparent sleeve at the lowest part is immersed under the liquid level of the water supply tank, the upper end and the lower end of the transparent sleeve are provided with flanges, and the flange at the bottom of the transparent sleeve at the lowest part is a bottom flange with a plurality of water filtering channels;
the detection system comprises a detection host and a plurality of soil moisture sensors which are connected with each other, and the soil moisture sensors are matched with the jacks.
Furthermore, the transparent sleeve is provided with scales.
Furthermore, threaded holes are formed in the flange plates, and the flange plates of the two transparent sleeves are connected through the threaded holes through bolts.
Furthermore, a rubber O-shaped ring is arranged between the soil moisture sensor and the jack.
Furthermore, the water supply tank is connected with a Ma's bottle through a communicating pipe, a sealing plug is arranged on the Ma's bottle, an air guide pipe is arranged on the sealing plug, and the air guide pipe is inserted below the liquid level of the Ma's bottle.
Furthermore, the transparent sleeve is made of organic glass.
Furthermore, rubber O-shaped rings are arranged between the mutually connected flange plates.
The utility model has the advantages as follows:
(1) the capillary tube main body of the utility model is spliced by four transparent sleeves, so that the testing device is modularized and is easy to splice, assemble and disassemble, observation and measurement are convenient, and by matching with the jack multi-group arrangement of the soil moisture sensor, multi-group data can be conveniently measured in a more dense interval, and the lifting rule of soil body capillary water can be conveniently obtained; the bottom flange plate with a plurality of water filtering channels can prevent the defect of advanced non-experimental damage of the test soil column and cannot influence the contact of the test soil column and water; but the detecting system who comprises soil moisture sensor (TDR) and detection host computer precision measurement volume moisture content and soil body temperature, only need insert soil sample as required with soil moisture sensor probe end during the use, other end cable conductor part inserts the detection host computer, just can possess the visual result of digitization, and the measurement is quick, and the result is accurate.
(2) Scales are arranged on the transparent sleeve, so that the rising height of the capillary water can be observed visually at any time in a test; rubber O-shaped rings are arranged between the mutually connected flange plates and are fully screwed by bolts to prevent water from overflowing; a rubber O-shaped ring is arranged between the soil moisture sensor and the jack, and a gap between the soil moisture sensor and the jack is sealed by matching with high-vacuum sealing grease, so that gas and moisture among soil particles in the soil sample are prevented from being mutually exchanged with the external environment in the test process, and the most accurate data is obtained; the transparent sleeve of organic glass is more durable and practical.
(3) The water supply system is manufactured by utilizing the Mariotte bottle principle, the bottommost end of a glass tube in the Mariotte bottle is immersed under the water surface and fixed to a required position, and the top end of the glass tube is communicated with the air. When the moisture in the March bottle flows to the soil body in the capillary tube main body, the top of the March bottle forms vacuum, air can only enter the March bottle from the glass tube, and the lowest end of the glass tube is a point directly contacted with the air. Therefore, in order to ensure that the water head is not changed, only the water level in the March bottle is not lower than the bottommost end of the glass tube, and the water above the glass tube in the March bottle can not influence the water head. The Mariotte bottle can also be placed on an electronic scale, and the mass of the water entering the soil body in the experimental process can be accurately calculated through the reading of the electronic scale. Water is supplied from the bottom surface of the sample, the height of a water head can be accurately adjusted, the actual condition of the rise of the underground water level is restored to a great extent, and the amount of water entering the soil body under the capillary action can be intuitively calculated. In conclusion, the stable water replenishing system is not affected by the change of the external environment.
(4) The utility model can be flexibly combined, and the purpose of rapidly building the test height of various requirements is realized; the height of the water head can be flexibly and accurately controlled; the water rising height can be directly observed, the workload of scientific research personnel is reduced, and errors in reading caused by human factors can be avoided; the volume water content and the soil body temperature of the cross section of the sensor at any moment can be synchronously, quickly and accurately measured; but through automatic water charging system mah-jong bottle furthest's simulation groundwater condition that rises, combine together with the engineering reality, more accord with experimental original purpose, better achievement experiment purpose.
Drawings
FIG. 1 is a schematic structural diagram of a soil body capillary water lifting law testing device;
FIG. 2 is a schematic structural diagram of a capillary main body in a soil capillary water lifting law testing device;
FIG. 3 is a schematic structural diagram of a transparent sleeve in the soil body capillary water lifting law testing device;
FIG. 4 is a top view of a flange plate in the soil capillary water lifting law testing device;
FIG. 5 is a schematic structural view of a bottommost transparent sleeve in the soil capillary water lifting law testing device;
FIG. 6 is a top view of a bottom flange plate in the soil capillary water lifting law testing device;
FIG. 7 is a schematic structural diagram of a detection system in a soil capillary water lifting law testing device;
FIG. 8 is a schematic structural view of a rammer in an embodiment.
The reference numbers are as follows: 1-a water supply system; 11-a water supply tank; 12-mahalanobis bottle; 13-communicating tube; 14-a sealing plug; 15-gas-guide tube; 16-liquid level; 2-a capillary body; 21-a transparent sleeve; 22-flange plate; 23-bottom flange; 24-a jack; 25-a water filtration channel; 26-graduation; 27-a threaded hole; 3-a detection system; 31-a soil moisture sensor; 32-detecting the host computer; 4-compaction hammer.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
As shown in fig. 1-8, a soil body capillary water lifting law testing device comprises a water supply system 1, a capillary tube main body 2 and a detection system 3.
The water supply system 1 includes a water supply tank 11; the water supply tank 11 is connected with a Mariotte bottle 12 through a communicating pipe 13, a sealing plug 14 is arranged on the Mariotte bottle 12, an air duct 16 is arranged on the sealing plug 14, and the air duct 16 is inserted below the liquid level of the Mariotte bottle 12.
The capillary tube main body 2 comprises at least two transparent sleeves 21 connected from bottom to top, the transparent sleeves 21 are made of organic glass, and the transparent sleeves 21 are provided with scales 26; at least 3 groups of jacks 24 are arranged on each transparent sleeve 21, the lower part of the transparent sleeve 21 at the lowest part is immersed below the liquid level 16 of the water supply tank 11, the upper end and the lower end of the transparent sleeve 21 are provided with flanges 22, and the flange 22 at the bottom of the transparent sleeve 21 at the lowest part is a bottom flange 23 with a plurality of water filtering channels 26. Threaded holes 27 are formed in the flange plates 22, and the flange plates of the two transparent sleeves 21 are connected through the threaded holes 27 through bolts; a rubber O-ring is provided between the interconnected flanges 22.
The detection system 3 comprises a detection host 32 and a plurality of soil moisture sensors 31 which are connected with each other, and the soil moisture sensors 31 are matched with the jacks 24; a rubber O-ring is provided between the soil moisture sensor 31 and the insertion hole 24.
The utility model works as follows.
The method comprises a sample preparation step which comprises the following steps:
according to the test requirement, configuring a soil sample with a certain water content (the water content is determined by the test requirement) according to the soil test method standard (GB 50123-2019), slowly pouring the prepared soil sample into the transparent sleeve 21, paving, compacting the soil sample by adopting the sequence of firstly compacting the soil sample in the center and then compacting the soil sample according to the drop distance and compacting times specified by the standard or specification, compacting by adopting compacting hammers shown in FIG. 8, compacting soil samples in ten layers, compacting uniformly in layers at the height of 5cm of each layer according to a certain water content omega and dry density rhod (the dry density is determined by the test requirement), and performing shaving treatment at the connection position of each layer, so that the uniformity and continuity of the whole soil body can be ensured, and the generation of the layering phenomenon is reduced.
And uniformly maintaining the single soil column model for 24-48 hours under the conditions of constant temperature and constant humidity after the preparation of the single soil column model is finished, so that the water in the sample is uniform.
After the maintenance is completed, 4 transparent sleeves 21 are assembled into the capillary tube main body 2 with the one-dimensional columnar structure, and finally, the top plate is installed and fixed by bolts, so that the assembly work is completed.
Secondly, before the test, the preparation is carried out according to the following steps:
step A, finding a flat and spacious field for experiment, fixing the transparent sleeve 21 at the bottommost layer in the water supply tank 11, wherein in order to ensure that the soil body supplies water uniformly and prevent fine particles in the soil from blocking a water inlet or transferring the fine particles to a water replenishing system, a flange plate 23 at the bottom of the transparent sleeve 21 at the bottommost layer is padded with permeable stones and filter paper, and moist fine sand is plugged into a water filtering channel 26 of the flange plate 23 at the bottom in advance.
And step B, uniformly coating a thin layer of vaseline on the inner wall of the transparent sleeve 21 made of organic glass at the bottom, and preventing the inner wall of the transparent sleeve 21 from being in loose contact with the soil body to generate a water channel so as to cause experimental errors.
The plug is used for blocking the plug hole 24 on the transparent sleeve 21, so that the soil body is prevented from being spilled to the outside in the compaction process, and the compaction effect is influenced after the soil moisture sensor 31 is inserted into the soil body in the later test.
The rubber plugs in the jacks 24 are taken out when the height of one row of the jacks 24 is tamped, a channel for inserting the soil moisture sensor 31 is fished out by tools such as a small soil scooper, the rubber O-shaped ring is wound around the soil moisture sensor 31 and inserted into the jacks 24, and a gap between the rubber plugs and the jacks is sealed by matching with high-vacuum sealing grease.
And C, performing operation of the rest transparent sleeves 21, assembling the transparent sleeves 21 in a proper number according to the test requirements, finally assembling 4 transparent sleeves 21 into the capillary tube main body 2 in the one-dimensional columnar structure, and finally installing a top plate and fixing the top plate by using bolts to finish the assembling work.
In the whole test process after assembly, the whole process needs to be kept in a complete fixed state, and the test stability cannot be influenced by shaking.
And thirdly, during the test, the method comprises the following steps:
and step A, injecting water to the bottom of the water supply tank 11 by using the Mariotte bottle 12, controlling the water surface to be in contact with the bottom surface interface of the modified soil sample, ensuring that the liquid level in the water supply tank 11 is slightly higher than 1-2cm of the bottom flange plate 23, and ensuring that the interface of the permeable stone layer and the soil sample is the water surface height.
And step B, due to the capillary lifting effect of the water body, the water body starts to enter the transparent sleeve 21 and slowly rises, the height of the sample is observed according to the scales 26 arranged on the transparent sleeve 21 in time, the rising height of the capillary water is judged at any time according to the color change of the soil body in the pipe, the time unit is day, and the height unit is cm.
And step C, simultaneously starting the detection host 32 to monitor the data of the soil moisture sensor 31 in real time, wherein the soil moisture sensor 31 measures the volume water content and the soil temperature of the soil body at each 10cm height (the bottommost 5cm height) of the sample in the transparent sleeve 21, and transmits the volume water content and the soil body temperature to the detection host 32 until a calculated value is reached, and the error is preferably less than or equal to +/-2%.
And D, obtaining the change rule of the capillary water rising height along with time and the change rule of the volume water content along with time through the capillary water rising height in a specific time period.
In actual operation, the testing instrument can be upgraded and modified in an information mode, after modification, in a test, data such as the rising height of the moisture sensor and capillary water can be automatically collected and stored by a computer every 10min at the initial stage and every 30min at the later stage, the time interval of data collection can be stabilized, artificial interference is reduced, and the purpose of the test can be achieved more conveniently and accurately.
It should be noted that the specific model specifications of the soil moisture sensor 31 and the detection host 32 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed description is omitted.
The power supply of the soil moisture sensor 31, the detection host 32 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.
Claims (7)
1. The utility model provides a soil body capillary water lifting law testing arrangement, includes water supply system (1), capillary main part (2), detecting system (3), its characterized in that:
the water supply system (1) comprises a water supply tank (11);
the capillary tube main body (2) comprises at least two transparent sleeves (21) connected from bottom to top, at least 3 groups of insertion holes (24) are formed in each transparent sleeve (21), the lower portion of the transparent sleeve (21) at the lowest position is immersed below the liquid level (16) of the water supply tank (11), flange plates (22) are arranged at the upper end and the lower end of the transparent sleeve (21), and the flange plate (22) at the bottom of the transparent sleeve (21) at the lowest position is a bottom flange plate (23) with a plurality of water filtering channels (25);
the detection system (3) comprises a detection host (32) and a plurality of soil moisture sensors (31) which are connected with each other, and the soil moisture sensors (31) are matched with the jacks (24).
2. The soil body capillary water lifting law testing device of claim 1, wherein: the transparent sleeve (21) is provided with scales (26).
3. The soil mass capillary water lifting law testing device of claim 1 or 2, wherein: threaded holes (27) are formed in the flange plates (22), and the flange plates of the two transparent sleeves (21) are connected through the threaded holes (27) through bolts.
4. The soil body capillary water lifting law testing device of claim 3, wherein: and a rubber O-shaped ring is arranged between the soil moisture sensor (31) and the jack (24).
5. The soil body capillary water lifting law testing device of claim 1, wherein: the water supply tank (11) is connected with a March's bottle (12) through a communicating pipe (13), a sealing plug (14) is arranged on the March's bottle (12), an air duct (15) is arranged on the sealing plug (14), and the air duct (15) is inserted below the liquid level of the March's bottle (12).
6. The soil body capillary water lifting law testing device of claim 1, wherein: the transparent sleeve (21) is made of organic glass.
7. The soil body capillary water lifting law testing device of claim 1, wherein: and a rubber O-shaped ring is arranged between the mutually connected flange plates (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120163030.XU CN214374089U (en) | 2021-01-21 | 2021-01-21 | Soil body capillary water lifting law testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120163030.XU CN214374089U (en) | 2021-01-21 | 2021-01-21 | Soil body capillary water lifting law testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214374089U true CN214374089U (en) | 2021-10-08 |
Family
ID=77957979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120163030.XU Active CN214374089U (en) | 2021-01-21 | 2021-01-21 | Soil body capillary water lifting law testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214374089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689822A (en) * | 2022-03-31 | 2022-07-01 | 中国电建集团成都勘测设计研究院有限公司 | Device for measuring capillary water rising height of soil body on site and using method thereof |
| CN115201070A (en) * | 2022-08-09 | 2022-10-18 | 贵州省水利水电勘测设计研究院有限公司 | Device and method for simulating capillary rising process |
-
2021
- 2021-01-21 CN CN202120163030.XU patent/CN214374089U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689822A (en) * | 2022-03-31 | 2022-07-01 | 中国电建集团成都勘测设计研究院有限公司 | Device for measuring capillary water rising height of soil body on site and using method thereof |
| CN114689822B (en) * | 2022-03-31 | 2023-03-17 | 中国电建集团成都勘测设计研究院有限公司 | Device for measuring capillary water rising height of soil body on site and using method thereof |
| CN115201070A (en) * | 2022-08-09 | 2022-10-18 | 贵州省水利水电勘测设计研究院有限公司 | Device and method for simulating capillary rising process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214374089U (en) | Soil body capillary water lifting law testing arrangement | |
| Ankeny | Methods and theory for unconfined infiltration measurements | |
| CN107505448B (en) | Seepage erosion model device, system and test method caused by underground pipeline damage | |
| CN102636630A (en) | Large unsaturated seepage physical simulator for soil in aerated zone | |
| CN103389260B (en) | Pile foundation hinders the simulation laboratory test method of seepage action of ground water | |
| CN113720880B (en) | Resistivity monitoring system and method for underground three-dimensional migration process of pollutants | |
| CN104914231A (en) | Model test device for testing foundation pit group excavation sequence and support case-caused influence on stratum | |
| CN104007248A (en) | Method for constructing water and soil erosion coupling model in karst region and application thereof | |
| CN110021220B (en) | Building block type geothermal tail water recharging analysis system and application method | |
| CN210604631U (en) | Indoor tester for high water content dredged soil under low stress and negative pressure state | |
| CN204649237U (en) | Swelled ground infiltration, expansion, loading, consolidation testing device | |
| CN113376073A (en) | Rare earth slope preferential flow simulation test system | |
| CN210071422U (en) | Underground water multilayer undisturbed monitoring system | |
| CN113484210A (en) | On-site scale test determination method for dispersity of strongly weathered layer | |
| CN108343095A (en) | The experimental rig and method of static pressure pile-sinking in the simulation saturation soil body | |
| CN112857737B (en) | Simulation test method for submersible complete well | |
| CN216051308U (en) | Multi-dimension-multi-physical-field fractured loess subsurface corrosion mechanism physical model experiment device | |
| CN110346247B (en) | Mesoscale test determination method for bottom mud salt diffusion coefficient of hydraulic reclamation area | |
| CN114353736A (en) | Method for testing free expansion rate of compacted bentonite | |
| CN212083426U (en) | Adjustable karst underground water and soil leakage simulator | |
| CN108508181A (en) | A kind of stratiform aeration zone simulation test device and method | |
| CN109827883B (en) | Test device and test method for simulating stability study of pile-row support foundation pit under deep foundation pit engineering pipeline rupture working condition | |
| CN207249981U (en) | A kind of experiment simulator of quantitative study karst collapse | |
| CN111443185A (en) | Adjustable karst underground water and soil leakage simulator | |
| CN113404482A (en) | Indoor seepage simulation test device and method for horizontal well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |