CN214538887U - Sand and soil sample preparation device by water method - Google Patents
Sand and soil sample preparation device by water method Download PDFInfo
- Publication number
- CN214538887U CN214538887U CN202023201619.9U CN202023201619U CN214538887U CN 214538887 U CN214538887 U CN 214538887U CN 202023201619 U CN202023201619 U CN 202023201619U CN 214538887 U CN214538887 U CN 214538887U
- Authority
- CN
- China
- Prior art keywords
- sealing cover
- sample preparation
- cylindrical barrel
- soil sample
- preparation device
- 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
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a sand-soil sample preparation device by a water method, which comprises a sample preparation cylinder and a three-shaft sample preparation device; the sample preparation barrel comprises a cylindrical barrel, an upper sealing cover and a lower sealing cover are respectively arranged at two ends of the cylindrical barrel in a sealing manner, permeable stones are respectively arranged at one ends of the upper sealing cover and the lower sealing cover facing the inside of the cylindrical barrel, one end of the upper sealing cover facing the outside of the cylindrical barrel is connected with a control valve, and the control valve is communicated with the inside of the cylindrical barrel; when the sand-soil sample is prepared by the water method, the sample preparation cylinder is arranged in the three-axis sample preparation device, the lower end of the three-axis sample preparation device is provided with a test operating platform, and the upper end of the three-axis sample preparation device is nested with a restraint ring. Can obtain the saturated sandy soil sample with uniform density.
Description
Technical Field
The utility model belongs to water law system sand soil sample field relates to a water law system sand soil sample device.
Background
Soil body sample preparation is the most basic link in geotechnical experiments, and domestic and foreign scholars try to adopt freezing to take an original sample, but the method has small application range, usually mainly uses soft clay, and the test consumption is high, and a frozen sample is difficult to take out from a saturator due to the cementing action of ice, so that an incomplete frozen sample is formed. Compared with clay, the sand is easy to disturb, and the undisturbed sand is difficult to obtain, so that the simulation of the sand with different causes by adopting a proper remoulded sand sample preparation method in an indoor test is particularly important. At present, the common sand sample preparation methods include a layered wet-tamping method sample preparation method, a rain-falling method sample preparation method and the like. The sand rain method is used for preparing samples in the air, and although the characteristics of natural deposition of sandy soil can be simulated, the sample preparation density is difficult to control due to the influence of the size and the fall distance of a sand outlet; the method is characterized in that a sample with a large porosity ratio can be prepared, but the limitation is obvious, and the phenomenon that the soil body is seriously layered is mainly shown, so that the uniformity of the sample is difficult to control; in addition, the traditional sandy soil sample preparation method is easy to disturb under the action of water force in a saturation process (no water is introduced and back pressure saturation), so that the structural property of a soil body is changed, and the test result is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a water law system sand soil sample device, can acquire the even saturated sand soil sample of density.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a sand-soil sample preparation device by a water method comprises a sample preparation cylinder and a three-axis sample preparation device;
the sample preparation barrel comprises a cylindrical barrel, an upper sealing cover and a lower sealing cover are respectively arranged at two ends of the cylindrical barrel in a sealing manner, permeable stones are respectively arranged at one ends of the upper sealing cover and the lower sealing cover facing the inside of the cylindrical barrel, one end of the upper sealing cover facing the outside of the cylindrical barrel is connected with a control valve, and the control valve is communicated with the inside of the cylindrical barrel;
when the sand-soil sample is prepared by the water method, the sample preparation cylinder is arranged in the three-axis sample preparation device, the lower end of the three-axis sample preparation device is provided with a test operating platform, and the upper end of the three-axis sample preparation device is nested with a restraint ring.
Preferably, the joints of the upper sealing cover and the lower sealing cover with the cylinder are provided with rubber rings.
Preferably, a spring clamping groove piston is arranged in the control valve.
Preferably, the two ends of the cylindrical barrel are provided with internal threads, the peripheral surfaces of the upper sealing cover and the lower sealing cover are provided with external threads, and the upper sealing cover and the lower sealing cover are respectively in threaded connection with the two ends of the cylindrical barrel.
Preferably, one end of the lower sealing cover facing the outside of the cylindrical barrel is provided with a water valve, and the water valve is communicated with the inside of the cylindrical barrel.
Preferably, the upper sealing cover and the lower sealing cover are both made of toughened plastic, and the cylindrical barrel is made of toughened transparent plastic.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses an atmospheric pressure's principle, through the inside atmospheric pressure of a control valve control preparation appearance section of thick bamboo, under atmospheric pressure and the effect of joining in marriage the atmospheric pressure difference of the inside atmospheric pressure of an appearance section of thick bamboo, can directly draw former dress saturated sand soil sample, reduced the disturbance of soil sample. Based on the same principle, in the process of configuring and remolding the saturated sandy soil sample, the sand can be fully vibrated in the culture cylinder, so that the sand and the water are fully contacted, and the saturated state is finally reached. Can be through the differential pressure of control valve for the soil sample is placed inside the triaxial system appearance ware step by step, thereby can acquire the even saturated sand sample of density.
Drawings
FIG. 1 is a schematic view of a sample dispensing cartridge device of the present invention;
FIG. 2 is a front view of the upper cover structure of the present invention;
FIG. 3 is a top view of the upper cover structure of the present invention;
FIG. 4 is a front view of the lower cover structure of the present invention;
FIG. 5 is a top view of the lower cover structure of the present invention;
FIG. 6 is a flow chart showing the steps of preparing a sandy soil sample by indoor configuration of the present invention;
fig. 7 is the flow chart of the sample loading steps of the saturated sand sample of the present invention.
Wherein: 1-a cylindrical drum; 2-upper sealing cover; 3-lower sealing cover; 4-permeable stone; 5-a control valve; 6-spring slot piston; 7-rubber ring; 8-preparing a vessel; 9-a funnel; 10-a catheter; 11-a three-axis sample preparation device; 12-test bench; 13-a confinement ring; 14-a compression plate; 15-filter paper; 16-latex film.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
water method system sand soil sample device, including joining in marriage a kind section of thick bamboo and triaxial system appearance ware 11.
As shown in figure 1, the sample preparation barrel comprises a cylindrical barrel 1, an upper sealing cover 2 and a lower sealing cover 3 are respectively arranged at two ends of the cylindrical barrel 1 in a sealing mode, a permeable stone 4 is arranged at one end, facing the inside of the cylindrical barrel 1, of each of the upper sealing cover 2 and the lower sealing cover 3, a control valve 5 is connected to one end, facing the outside of the cylindrical barrel 1, of the upper sealing cover 2, and the control valve 5 is communicated with the inside of the cylindrical barrel 1.
Both ends are the opening about a cylinder 1, and 1 inner wall both ends of a cylinder all have the internal thread, go up sealed lid 2 and sealed 3 global on being provided with the external screw thread down, go up sealed lid 2 and sealed 3 down respectively with 1 both ends threaded connection of a cylinder.
The joints of the upper sealing cover 2 and the lower sealing cover 3 with the cylinder barrel 1 are provided with rubber rings 7, so that the sealing performance is ensured.
As shown in fig. 4 and 5, the upper sealing cover 2 and the lower sealing cover 3 are both made of toughened plastics, the thickness of the upper sealing cover 2 is 2cm, the thickness of the lower sealing cover 3 is 1cm, and a threaded hole is formed in the center of the upper sealing cover 2.
The cylinder 1 is made of toughened transparent plastic, the thickness is 5mm, and the height is 30 cm.
As shown in fig. 2 and 3, the control valve 5 is made of metallic copper. The length of which is 15 cm. The lower end of the control valve 5 is provided with a thread with the length of 2cm, and the thread is screwed with a threaded hole in the center of the upper sealing cover 2. A spring clamping groove piston 6 is arranged in the control valve 5, and can be opened and closed in a pressing mode to control air flow and form internal and external pressure difference.
When a sand-soil sample is prepared by a water method, the sample preparation cylinder is arranged in the three-axis sample preparation device 11, the lower end of the three-axis sample preparation device 11 is provided with a test operating platform 12, and the upper end of the three-axis sample preparation device 11 is nested with a restraint ring 13. The confinement ring 13 is used to fix the three-lobed mold constituting the three-axis sampler 11.
Use the device process when carrying out water law system sand soil sample does:
step one, preparing a sandy soil sample by adopting an outdoor configuration mode or an indoor configuration mode;
when the device is configured outdoors, in an outdoor place, under the condition that the water amount is rich, the lower sealing cover 3 and the control valve 5 of the cylindrical barrel 1 are opened, one end, connected with the lower sealing cover 3, of the cylindrical barrel 1 is pressed into sandy soil, then the valve of the control valve 5 is closed, the cylindrical barrel 1 is lifted vertically upwards, and a sandy soil sample saturated on the site is obtained.
When the sample is configured indoors, as shown in fig. 6, firstly, the proportion of sandy soil and water is determined according to the saturated water content of different sandy soil, the tested sandy soil is put in a preparation vessel 8, an upper sealing cover 2 of a water method sample preparation device is opened, water is injected into a cylindrical barrel 1, and the tested sandy soil is added into the cylindrical barrel 1 by a funnel 9; and then sealing the upper sealing cover 2 with the cylindrical barrel 1, closing the control valve 5, and carrying out oscillation saturation to obtain the sandy soil sample.
Step two, as shown in fig. 7, a triaxial sample preparation device 11 and a latex film 16 are installed on a test operation table 12, the control valve 5 is opened, in order to ensure the success rate of sample preparation, the control valve 5 can be connected with a conduit 10, and after a certain suction force of 20-30kPa is applied, the valve of the control valve 5 is closed. The lower sealing cover 3 is unscrewed, and the filter paper 15 is stuck to the lower end of the sample preparation cylinder. After a restraint ring 13 is nested at the upper end of the three-axis sample preparation device 11, the cylindrical barrel 1 is placed into the three-axis sample preparation device 11, the sample barrel is slowly lifted to enable the sandy soil sample to be slowly added into the three-axis sample preparation device 11, the restraint ring 13 is removed after the process is finished, and a pressure plate 14 is arranged above the sandy soil sample. Suction is applied to the sand sample through the apertures in the pressure plate 14 and the conduit 10. And (3) unloading the three-axis sample preparation device 11, and wrapping the periphery of the sandy soil sample with a latex film 16 to finish the installation of the sandy soil sample.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (6)
1. The device for preparing the sandy soil sample by the water method is characterized by comprising a sample preparation cylinder and a three-axis sample preparation device (11);
the sample preparation barrel comprises a cylindrical barrel (1), an upper sealing cover (2) and a lower sealing cover (3) are respectively arranged at two ends of the cylindrical barrel (1) in a sealing mode, permeable stones (4) are respectively arranged at one ends, facing the inside of the cylindrical barrel (1), of the upper sealing cover (2) and the lower sealing cover (3), a control valve (5) is connected to one end, facing the outside of the cylindrical barrel (1), of the upper sealing cover (2), and the control valve (5) is communicated with the inside of the cylindrical barrel (1);
when a sand-soil sample is prepared by a water method, the sample preparation cylinder is arranged in the three-axis sample preparation device (11), the lower end of the three-axis sample preparation device (11) is provided with a test operating platform (12), and the upper end of the three-axis sample preparation device (11) is nested with a restraint ring (13).
2. The device for preparing the sandy soil sample by the water method according to claim 1, wherein rubber rings (7) are arranged at the joints of the upper sealing cover (2) and the lower sealing cover (3) and the cylindrical barrel (1).
3. The device for preparing the sandy soil sample by the water method according to the claim 1, wherein a spring clamping groove piston (6) is arranged in the control valve (5).
4. The device for preparing the sandy soil sample by the water method according to claim 1, wherein internal threads are arranged at two ends of the cylindrical tube (1), external threads are arranged on the peripheral surfaces of the upper sealing cover (2) and the lower sealing cover (3), and the upper sealing cover (2) and the lower sealing cover (3) are respectively in threaded connection with two ends of the cylindrical tube (1).
5. The device for preparing the sandy soil sample by the water method according to claim 1, wherein the end, facing the outside of the cylindrical barrel (1), of the lower sealing cover (3) is provided with a water valve, and the water valve is communicated with the inside of the cylindrical barrel (1).
6. The device for preparing the sandy soil sample by the water method according to claim 1, wherein the upper sealing cover (2) and the lower sealing cover (3) are both made of toughened plastic, and the cylindrical barrel (1) is made of toughened transparent plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023201619.9U CN214538887U (en) | 2020-12-25 | 2020-12-25 | Sand and soil sample preparation device by water method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023201619.9U CN214538887U (en) | 2020-12-25 | 2020-12-25 | Sand and soil sample preparation device by water method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214538887U true CN214538887U (en) | 2021-10-29 |
Family
ID=78297646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023201619.9U Active CN214538887U (en) | 2020-12-25 | 2020-12-25 | Sand and soil sample preparation device by water method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214538887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135222A1 (en) * | 2020-12-25 | 2022-06-30 | 长安大学 | Device and method for preparing sandy soil sample using water method |
-
2020
- 2020-12-25 CN CN202023201619.9U patent/CN214538887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135222A1 (en) * | 2020-12-25 | 2022-06-30 | 长安大学 | Device and method for preparing sandy soil sample using water method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112730012A (en) | Device and method for preparing sandy soil sample by water method | |
| CN104727805B (en) | Cement sheath cementing strength evaluating apparatus | |
| CN108776095B (en) | Device and method for measuring sponge infiltration rate for construction of sponge urban green land | |
| CN214538887U (en) | Sand and soil sample preparation device by water method | |
| CN109323902A (en) | A kind of experimental rig and test method of microorganism gelling Stabilization of Loess sample | |
| CN107192630A (en) | A kind of water filling is to desorption of mash gas characteristic experimental apparatus | |
| CN206876456U (en) | A kind of device for preparing saturation soil sample under an increased pressure | |
| CN111999142B (en) | MICP solidified calcareous sand bidirectional grouting cylindrical sample preparation instrument | |
| CN107238521B (en) | A kind of production method of tundra hydrate rock core | |
| CN207197898U (en) | Microorganism grouting technique consolidates the laboratory testing rig of residual soil | |
| CN209182122U (en) | A kind of experimental rig of microorganism gelling Stabilization of Loess sample | |
| CN204924802U (en) | Simple and easy consolidation test device that clay layer warp is sent to indoor simulation extraction pressure -bearing water | |
| CN107543756B (en) | Test device and test method for simulating rainfall humidification in triaxial test | |
| CN111999156A (en) | Temperature-controlled high-pressure biological solidification test device and test method thereof | |
| CN205175883U (en) | Quick measuring device of soil sample osmotic coefficient | |
| CN114324113A (en) | Test device and method for measuring permeability coefficient and permeability path of soil-structure interface | |
| CN107144514B (en) | Device for radial penetration experiment of cylindrical hollow soil sample and using method | |
| CN107727465B (en) | Method for manufacturing artificial sandstone with reservoir structure by using calcium carbonate cementation | |
| CN109141996A (en) | Gas hydrates core preparing device | |
| CN204389349U (en) | Flexible wall permeameter | |
| CN113552037A (en) | Device and method for testing dual-porosity seepage parameters of garbage | |
| CN208888108U (en) | A kind of shale porosity test device | |
| CN106124275B (en) | A kind of production method and device of seabed gassiness bury | |
| CN205538388U (en) | Integral vacuum saturation device | |
| CN207336285U (en) | A kind of water filling is to desorption of mash gas characteristic experimental apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |