CN202421030U - Cemented soil seepage deformation tester - Google Patents
Cemented soil seepage deformation tester Download PDFInfo
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- CN202421030U CN202421030U CN2012200216318U CN201220021631U CN202421030U CN 202421030 U CN202421030 U CN 202421030U CN 2012200216318 U CN2012200216318 U CN 2012200216318U CN 201220021631 U CN201220021631 U CN 201220021631U CN 202421030 U CN202421030 U CN 202421030U
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- cylinder shape
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Abstract
The utility model relates to a cemented soil seepage deformation tester, which is provided with a stepped cylindrical base and a T-shaped annular pressure cover, wherein a water injection cavity is formed on the lower part of the stepped cylindrical base; the T-shaped annular pressure cover is positioned above the cylindrical base; a cemented soil sample accommodation cavity is formed above the water injection cavity in the cylindrical base, and consists of an upper flat plate type water-stop ring and a lower flat plate type water-stop ring; a lower cover body of the annular pressure cover is inserted into the cylindrical base, and is pressed on the upper flat plate type water-stop ring; the upper expanded edge of the annular pressure cover is connected with the upper base edge of the cylindrical base through a screw structure; a water inlet pipe and an upstream pressure measurement pipe are arranged on the lower part of the cylindrical base, and are extended into the water injection cavity; and a downstream pressure measurement pipe is arranged on the upper part of the sidewall of the annular pressure cover, and is extended into a cover body. By the deformation tester, the technical problems that cemented soil is hydrated and expanded when maintained and cannot be arranged into a cutting ring again for test in a cemented soil seepage deformation test and that a high seepage slope is required, so the thickness of a test specimen is required to be changed for test under a finite water head condition can be effectively solved.
Description
Technical field
The utility model belongs to the soil test equipment technical field, relates to a kind of soil cement seepage deformation appearance that is used for the impervious deformability of test water earth.
Background technology
Soil cement belongs to solidified earth, has higher intensity behind the hydrated cementitious in interior, can play the effect of soil mass consolidation, aspect seepage deformation, then shows as to have high impervious deformability.All the time, the seepage deformation gradient of soil cement has much actually, and itself and cement mixing content and have the length of time such as which kind of relation etc. are the problem that researchers extremely crave for solution all the time.But the seepage deformation of the relevant soil cement in this area research at present is also fewer, and its reason is that soil cement seepage deformation destruction gradient is bigger on the one hand, and higher seepage pressure is difficult to solve; On the other hand, soil cement seepage failure gradient is relevant with the length of time, generally with increasing the length of time; Soil cement is with prolonging the length of time, and hydrated cementitious can produce certain expansion, if just in the lateral confinement cutting ring maintenance can produce cracking phenomena because of lateral confinement; So; The soil cement maintenance just must be carried out under no lateral confinement condition, but after sample withdraws from cutting ring, then can occur can't putting into the problem that cutting ring makes an experiment once more because of expansion; A kind method correction soil sample is cut in employing, can make test figure unreliable because of cutting a kind havoc soil sample after the soil cement sclerosis again.
The utility model content
The purpose of the utility model is to overcome the defective that prior art exists, and a kind of simple in structure, cost, easy to use, test data soil cement seepage deformation accurately and reliably appearance are provided.
For realizing that the technical solution that the foregoing invention purpose adopts is such: the soil cement seepage deformation appearance that is provided has step cylinder shape base and circular pressure lid that the side-looking face that is positioned at this cylinder shape base top is the T type that a bottom is provided with water-injecting cavity; Be provided with the cement soil sample setting-out chamber that constitutes by flat upper and lower seal ring on the water-injecting cavity in the cylinder shape base; The bottom lid of circular pressure lid inserts in the cylinder shape base and is fitted in flat going up on the seal ring; Circular pressure lid expand the seat of honour of upper edge through nut and screw rod and cylinder shape base along being connected; Be provided with water inlet pipe and the upper reaches piezometric tube that feeds water-injecting cavity in cylinder shape base bottom, be provided with the downstream piezometric tube of feeding lid in the side wall upper part of circular pressure lid.
The technical solution of the utility model also is: the seat of honour wall internal diameter of cylinder shape base is greater than the external diameter of test soil sample in this seepage deformation appearance.
The design philosophy of the utility model is: the flat ring-type seal ring of held sealing on the soil sample of cylinder shape base stage exponent part; To guarantee that the infiltration current permeate from revealing empty center section; Thereby solved the test difficult problem that soil sample expands and brings, adopted piston type pressure rings (being the circular pressure lid) on the top in cement soil sample setting-out chamber, in the test; Different with soil sample thickness; The piston pressure rings can move up and down, thereby solves under the limited head, reduces sample thickness and obtains big hydraulic slope problem.Through test, above-mentioned two problems has all obtained good solution.In addition, consider soil cement sample maintenance after expansion, test apparatus setting-out space (being cement soil sample setting-out chamber) increased diametrically, guarantee to make the soil sample after the maximum swelling can put into instrument smoothly.
Compared with prior art; The instrumentation of the utility model is simple; Cost, easy to operate, test data is accurately and reliably; It efficiently solves can't put into cutting ring once more because of soil cement maintenance hydration swelling in the soil cement seepage deformation test and make an experiment, and under limited head situation, needs to obtain higher infiltration gradient and change the technical matters that sample thickness makes an experiment.In the process of the test, the sample of this seepage deformation appearance after to blanks and moulding and conserving do not have disturbance to be damaged, even if maintenance does not have the cement soil body of cracking in test apparatus, under the more situation of sample, also can not take instrument for a long time because of maintenance.The utility model is not only applicable to soil cement, all is suitable for for other particulate disturbed soils and undisturbed soil.
Description of drawings
Fig. 1 is the positive line of vision structural representation of a practical implementation of the utility model.
Fig. 2 is that the side-looking of Fig. 1 is to structural representation.
Fig. 3 is overlooking to structural representation of Fig. 1.
The title of each number designation is respectively among the figure: the 1-nut, and the 2-screw rod, 3-downstream piezometric tube, 4-circular pressure lid, 5-cylinder shape base, the flat seal ring of going up of 6-, 7-tests soil sample, the flat seal ring down of 8-, 9-water inlet pipe, 10-upper reaches piezometric tube.
Embodiment
Below will combine accompanying drawing that the utility model content is further specified; But the practical implementation form of the utility model is not limited in following embodiment, and material, size, interior shape, specification, the soil sample that the protection category of its claim also is not limited to utensil is connected the loading and unloading form of profile and utensil with instrument.
Referring to accompanying drawing, the described soil cement seepage deformation of the utility model appearance is made up of cylinder shape base 5, circular pressure lid 4, flat upper and lower seal ring 6,8, upper reaches piezometric tube 10, downstream piezometric tube 3 and water inlet pipe 9 etc.Cylinder shape base 5 inner chambers are up big and down small step cavity; Establish water inlet pipe 9 on its cavity of resorption body wall and be water-injecting cavity; On water-injecting cavity, be provided with the cement soil sample setting-out chamber that constitutes by flat upper and lower seal ring 6,8; Soil cement test soil sample 7 is seated in the setting-out chamber, and the external diameter of test soil sample 7 is less than the internal diameter of chamber, the seat of honour wall of cylinder shape base 5.Circular pressure lid 4 is that the piston type that a side-looking face is the T type adds gland body; The bottom of lid is inserted in the cylinder shape base 5 and is fitted in flat going up on the seal ring 6; Expanding along the seat of honour through nut 1 and screw rod 2 and cylinder shape base 5 of lid top along being connected; Be provided with the upper reaches piezometric tube 10 that feeds water-injecting cavity in cylinder shape base 5 bottoms, be provided with the downstream piezometric tube 3 of feeding lid in the side wall upper part of circular pressure lid 4.
Claims (2)
1. soil cement seepage deformation appearance; It is characterized in that having step cylinder shape base (5) and side-looking face that is positioned at this cylinder shape base (5) top that a bottom is provided with water-injecting cavity is the circular pressure lid (4) of T type; Be provided with the cement soil sample setting-out chamber that constitutes by flat upper and lower seal ring (6,8) on the water-injecting cavity in cylinder shape base (5); The bottom lid of circular pressure lid (4) inserts in the cylinder shape base (5) and is fitted in flat going up on the seal ring (6); Circular pressure lid (4) expand the seat of honour of upper edge through nut (1) and screw rod (2) and cylinder shape base (5) along being connected; Be provided with water inlet pipe (9) and the upper reaches piezometric tube (10) that feeds water-injecting cavity in cylinder shape base (5) bottom, be provided with the downstream piezometric tube (3) of feeding lid in the side wall upper part of circular pressure lid (4).
2. according to claim a kind of soil cement seepage deformation appearance is characterized in that the external diameter of the seat of honour wall internal diameter of cylinder shape base (5) greater than test soil sample (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200216318U CN202421030U (en) | 2012-01-17 | 2012-01-17 | Cemented soil seepage deformation tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200216318U CN202421030U (en) | 2012-01-17 | 2012-01-17 | Cemented soil seepage deformation tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421030U true CN202421030U (en) | 2012-09-05 |
Family
ID=46745784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200216318U Expired - Fee Related CN202421030U (en) | 2012-01-17 | 2012-01-17 | Cemented soil seepage deformation tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421030U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283113A (en) * | 2018-10-31 | 2019-01-29 | 中国矿业大学 | A kind of the concrete impermeability test device and test method of elimination of level circumferential pressure |
| CN109556931A (en) * | 2018-10-31 | 2019-04-02 | 同济大学 | Soil cement cutting ring sample preparation facilities and permeability coefficient of cement soil measuring method, equipment |
-
2012
- 2012-01-17 CN CN2012200216318U patent/CN202421030U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283113A (en) * | 2018-10-31 | 2019-01-29 | 中国矿业大学 | A kind of the concrete impermeability test device and test method of elimination of level circumferential pressure |
| CN109556931A (en) * | 2018-10-31 | 2019-04-02 | 同济大学 | Soil cement cutting ring sample preparation facilities and permeability coefficient of cement soil measuring method, equipment |
| CN109283113B (en) * | 2018-10-31 | 2023-12-29 | 中国矿业大学 | Concrete impermeability test device and test method for eliminating horizontal hoop pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20130117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |