CN205808885U - A kind of device of seepage proof curtain simulation test - Google Patents
A kind of device of seepage proof curtain simulation test Download PDFInfo
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- CN205808885U CN205808885U CN201620710250.9U CN201620710250U CN205808885U CN 205808885 U CN205808885 U CN 205808885U CN 201620710250 U CN201620710250 U CN 201620710250U CN 205808885 U CN205808885 U CN 205808885U
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- proof curtain
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Abstract
The utility model discloses the device of a kind of seepage proof curtain simulation test, this device includes test specimen (11) and pressure chamber (1)；Wherein test specimen (11) is shaped as elongated cylinder, its central upper portion opened round hole (12), is provided with infiltration current drain pipe (14) in circular opening (12)；Pressure chamber (1) profile is cylindric, is provided with the cavity for accommodating test specimen (11) in its cylinder (2)；Pressure chamber (1) is connected by the compression pump (5) that water inlet pipe (7) is outside with being located at cylinder (2), and water inlet pipe (7) is provided with water inlet control valve (6) and inlet gage (8).Original state test specimen core sample and test specimen (11) that the circular opening (12) of test specimen (11) is produced by this utility model by this device carry out the test such as same physical mechanics and chemistry, before and after contrast permeability test, both changes, corrode and aging offer measured data for seepage proof curtain.
Description
Technical field
This utility model belongs to engineering material technical field of measurement and test, and this utility model relates to a kind of seepage proof curtain simulation test
Device.
Background technology
Grouting is Anti-seeping technology mode the most frequently used in water power hydraulic engineering, by grouting treatment, forms seepage proof curtain, will
Reservoir leakage amount controls at resonable degree, it is ensured that ground seepage stability and hydraulic structure safety.1838, Britain's Thomson tunnel
Road carries out cement grout first, and cement grout continues into the present as the status of the main material that is in the milk, and remaining as of most common of which is common
Portland cement.The more large medium-size station of China and reservoir have been running for, more than 20 years, having more the most successively
Project be completed and go into operation, seepage proof curtain is chronically under the effect of high pressure permeability current, and hydro-geochemical environment is complicated, anti-
Ooze curtain will continue to suffer from corroding and aging decay.
For the aging of seepage proof curtain and reliability, in addition to on-the-spot survey for the purpose of locating hydrogeological resources and prospecting, need to test
Research, due to curtain body huge in reality, in curtain body, the distribution of cement calculus is irregular, it is difficult to directly carry out on-the-spot infiltration
Test, needs to set up seepage proof curtain model, the fissurity of reflection seepage proof curtain, the feature that uneven and permeability is strong.
Currently for the laboratory test of seepage proof curtain, the art has following patented technology document, as patent name is
" test model of seepage proof curtain between a kind of simulation concrete and basement rock " (patent No. ZL 2,015 2 0471602.5) and " one
Plant the test model of simulation reservoir dam seepage proof curtain " (patent No. ZL 2,015 2 0471497.5).The two technical literature carries
The test model of confession and the method for seepage proof curtain simulation test, it is consistent with concreting that its test specimen manufactures basic ideas, test specimen
Free from flaw, infiltration current are from inside to outside.But above-mentioned technical literature is not yet in view of problems with:
Grout curtain be will have mobility, solidification after there is the serosity of bond under different pressures effect, inject geology
In body or the crack of structure, hole or hole, improve globality and the density of antiseepage line, improve its impervious and mechanical property
A kind of engineering means.Cement grout flows in crack or hole and consolidates, and Behavior of Hardened Cement Paste disperses, and volume is little, and surface area is huge,
Plane of weakness is remained with rock contact position.The seepage proof curtain standard that different heights of dam are corresponding is otherwise varied, for gravity dam, and dam
High at more than 100m, dam foundation curtain permeability rate is 1 ~ 3Lu, and height of dam is at below 50m, and for 5Lu, corresponding infiltration coefficient is about 1 ~ 5
×10-5Cm/s, belongs to weak permeable category.And to dam concrete, it is desirable to the internal seepage-resistant grade of minimum dam body is W2, corresponding
Infiltration coefficient is 1.96 × 10-8cm/s.The penetrating power of curtain is more than 500 times of concrete.
For the aging of seepage proof curtain and reliability, in addition to on-the-spot survey for the purpose of locating hydrogeological resources and prospecting, need to test
Research, due to curtain body huge in reality, in curtain body, the distribution of cement calculus is irregular, it is difficult to directly carry out on-the-spot infiltration
Test, needs to set up seepage proof curtain model.The test specimen of test needs to embody the cement calculus feature of seepage proof curtain, and test specimen needs
Representational crack, infiltration current need slowly to flow through cement calculus inside or cement calculus and rock under osmotic pressure effect
Between crack, current fully act on cement calculus, afterwards collect ooze out current, carry out water quality detection.And ooze for test specimen
Thoroughly carry out physical mechanics detection before and after test, study its physical mechanics variation characteristic.Therefore, two key points of test are simulations
The fracture water flow of curtain body and infiltration water stream characteristics.
Summary of the invention
The purpose of this utility model is to provide a kind of device simulating seepage proof curtain, obtains antiseepage curtain by simulation test
Curtain body and the Changing Pattern of infiltration current, the process that research seepage proof curtain corrodes, sum up the mechanism that seepage proof curtain is aging.
The technical solution of the utility model is as follows:
The device of a kind of seepage proof curtain simulation test, this device includes test specimen and pressure chamber；Wherein Specimen Shape is oval
Cylinder, its central upper portion opened round hole, circular opening is provided with infiltration current drain pipe；Pressure chamber profile is cylindric,
The cavity for accommodating test specimen it is provided with in its cylinder；Pressure chamber is connected with the compression pump being located at outside cylinder by water inlet pipe, enters
Water pipe is provided with water inlet control valve and inlet gage.
Wherein, infiltration current drain pipe is connected with test specimen with by seccotine and seals.Infiltration current drain pipe bottom with
Bottom the distance (part i.e. sealed by seccotine) at test specimen top, test specimen circular opening with test specimen bottom distance and test specimen
Radius identical.
Further, cylinder top is provided with cover, and cover is provided with a top drain pipe.Pressure chamber bottom sides is provided with
A piece bottom drain pipe, this bottom drain pipe is provided with draining control valve.
The test method that this utility model utilizes said apparatus to carry out seepage proof curtain simulation test comprises the steps:
Step 1: prepare test specimen, test specimen carries out the raw uniform thermal cracking of anxious delivery in cold weather, the plane of weakness of simulation seepage proof curtain and
Penetrating passage；
Step 2: bore circular opening with coring bit in test specimen, and take original state test specimen core sample；Circular opening at test specimen
Middle installation permeates current drain pipe；
Step 3: the test specimen prepared is loaded in pressure chamber, padded bottom test specimen, it is reserved for current bottom pressure chamber
Dynamic space；
Step 4: build the cover of pressure ceiling and seal, makes the infiltration current drain pipe top through pressure chamber of test specimen
Drain pipe；
Step 5: space between infiltration current drain pipe and top drain pipe two pipe of pressure chamber of sealed test piece, closes pressure
The draining control valve of power room；Open the water inlet control valve of pressure chamber, make pressure chamber fills water；
Step 6: start compression pump pressurization, read water pressure by Pressure gauge；Infiltration current penetrate into from surface of test piece, conflux
In the circular opening of test specimen, discharged by infiltration current drain pipe；
Step 7: keep seepage water pressure, timing to collect water inlet water sample and the discharge water water sample of test specimen of pressure chamber, carry out
Water analysis；
Step 8: after permeability test terminates, the compression pump of closing presure room, close water inlet control valve；Open pressure chamber
Draining control valve, opens cover, takes out test specimen.
Step 9: the original state test specimen core sample and the test specimen that are produced by the circular opening of test specimen carry out same physical mechanics and change
Etc. test, before and after contrast permeability test, both changes, corrode and aging offer measured data for seepage proof curtain.
This utility model has following technical effect that
This utility model can be used for the simulation test of seepage proof curtain；This utility model utilizes in concrete cement aquation engineering
The principle manufacture in thermal shocking generation crack meets the uniform crack test specimen of seepage proof curtain fissurity, strong permeability feature so that
Test more meets the practical situation of seepage proof curtain, and test specimen has preferable representativeness；During same concrete curing in addition
The method suddenly frozen can manufacture other concrete test samples needing to produce rift defect, and method all has preferable versatility；
Infiltration current are entered by surface of test piece, flow out by test specimen is internal, it is ensured that be distributed in whole examination infiltration uniform fluid flow
Part；Test specimen is cylinder, opened round hole in test specimen, identical with the radius of the distance bottom test specimen and test specimen bottom hole, hole
Top, hole seals with infiltration current drain pipe, permeates distance and the radius phase of test specimen with test specimen top bottom current drain pipe
With, it is ensured that the flow path length being penetrated into circular opening by surface of test piece is consistent, can count more convenient and exactly
Calculate the infiltration coefficient of test specimen；It addition, pressure chamber and test specimen current system, infiltration current accomplish again independence, and sampling is convenient；Examination
The original state test specimen core sample of the circular opening generation of part and test specimen can carry out contrasting the test such as physical mechanics and chemistry, and test specimen is same
Source, has good comparability.
Accompanying drawing explanation
Fig. 1 is test test specimen profile；
Fig. 2 is test test specimen top view；
Fig. 3 is pressure chamber profile.
Description of reference numerals: 1-pressure chamber, 2-cylinder, 3-cover, 4-top drain pipe, 5-compression pump, 6-is intake control
Valve, 7-water inlet pipe, 8-inlet gage, 9-bottom drain pipe, 10-draining control valve, 11-test specimen, 12-circular opening, 13-is strong
Power glue, 14-permeates current drain pipe, and 15-permeates water (flow) direction.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment 1:
First, see Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 respectively show the test specimen 11 that this utility model is used profile and
Top view.It can be seen that test specimen 11 of the present utility model is shaped as elongated cylinder；Test specimen 11 central upper portion making circular hole
Hole 12, identical with the radius of the distance bottom test specimen 11 and test specimen 11 bottom circular opening 12；Infiltration current drain pipe 14 is positioned at
In circular opening 12, permeate distance (the i.e. portion sealed in Fig. 1 with test specimen 11 top bottom current drain pipe 14 by seccotine 13
Point) identical with the radius of test specimen 11；Infiltration current drain pipe 14 is connected with test specimen 11 by seccotine 13, and seals；High pressure oozes
Permeable stream penetrates into test specimen by test specimen 11 outer surface, is freely oozed out by circular opening 12, by infiltration current drain pipe 14 row
Go out and collect water sample, the infiltration water (flow) direction 15 that in test specimen 11, water (flow) direction is shown by arrow.
Seeing that Fig. 3, Fig. 3 illustrate the structure of pressure chamber 1 of the present utility model, pressure chamber 1 is consistent with test specimen 11 shape, for cylinder
Shape, inner space is slightly larger than test specimen 11, and outside is mainly made up of with cover 3 cylinder 2, and cylinder 2 is salable with cover 3；Pressure chamber 1
It is connected with external pressure pump 5 by water inlet pipe 7；The water inlet of pressure chamber 1 is controlled by water inlet control valve 6；The hydraulic pressure of pressure chamber 1 leads to
Excess pressure table 8 measures；The water draining of abandoning of pressure chamber 1 is realized by bottom drain pipe 9, abandons water draining and is controlled by draining control valve 10
System；Test specimen 11 is overall loads pressure chamber 1, and the infiltration current of test specimen 11 are discharged by the top drain pipe 4 of pressure chamber 1, test specimen 11
Infiltration current drain pipe 14 through the top drain pipe 4 of pressure chamber 1, seal between two pipes.
Test method of the present utility model is implemented:
The preparation method of 1 test specimen:
1.1 require to manufacture the tubular external mold that test specimen 11 pours according to the design size of test specimen 11；
Crushed stone aggregate put into by 1.2 external molds, prepares cement mortar according to general seepage proof curtain serosity parameter, and be filled into broken
In gap between stone aggregate, can enhancing perfusion；
1.3 test specimen 11 band mould standard curing 48h, form removal；
1.4 test specimen 11 ambient temperatures plunge to 0 DEG C, keep 24h, and uniform for generation temperature is split by low temperature by test specimen 11
Seam, the plane of weakness of simulation seepage proof curtain and penetrating passage；
1.5 test specimens 11 continue standard curing 28d；
1.6 bore circular opening 12 with coring bit according to shown in Fig. 1 and Fig. 2 in test specimen 11, and take original state test specimen core
Sample；
1.7 install infiltration current drain pipe 14 in the circular opening 12 of test specimen 11；
2 test methods
The test specimen 11 prepared is loaded in pressure chamber 1 by 2.1, padded bottom test specimen 11, is reserved for bottom pressure chamber 1
The hole of water flowing；
2.1 covers 3 building pressure chamber 1 also seal, and the infiltration current drain pipe 14 of test specimen 11 passes the upper of pressure chamber 1
Portion's drain pipe 4；
Space between infiltration current drain pipe 14 and 4 liang of pipes of top drain pipe of pressure chamber 1 of 2.2 sealed test piece 11, closes
Close the draining control valve 10 of pressure chamber 1；Open the water inlet control valve 6 of pressure chamber 1, pressure chamber 1 fills water；
2.3 start compression pump 5 pressurizes, and requires pressurization according to EXPERIMENTAL DESIGN osmotic pressure, and water pressure can pass through Pressure gauge 8
Reading, infiltration current penetrate into from test specimen 11 surface, conflux in the circular opening 12 of test specimen 11, by infiltration current drain pipe 14
Discharge；
2.4 keep seepage water pressure, timing to collect water inlet water sample and the discharge water water sample of test specimen 11 of pressure chamber 1, carry out
Water analysis；
After 2.5 permeability tests terminate, the compression pump 5 of closing presure room 1, close water inlet control valve 6；Open pressure chamber 1
Draining control valve 10, opens cover 3, takes out test specimen 11；
Original state test specimen core sample and test specimen 11 that the circular opening 12 of test specimen 11 is produced by 2.6 carry out same physical mechanics
Testing with chemistry etc., before and after contrast permeability test, both changes, corrode and aging offer measured data for seepage proof curtain.
Certainly, being more than concrete exemplary applications of the present utility model, this utility model also has other embodiment, all
Use the technical scheme that equivalent or equivalent transformation are formed, within all falling within the protection domain required by this utility model.
Claims (5)
1. the device of a seepage proof curtain simulation test, it is characterised in that: this device includes test specimen (11) and pressure chamber (1)；Its
Middle test specimen (11) is shaped as elongated cylinder, its central upper portion opened round hole (12), is provided with infiltration water in circular opening (12)
Stream drain pipe (14)；Pressure chamber (1) profile is cylindric, is provided with the cavity for accommodating test specimen (11) in its cylinder (2)；Pressure
Room (1) is connected by the compression pump (5) that water inlet pipe (7) is outside with being located at cylinder (2), and water inlet pipe (7) is provided with water inlet control valve
And inlet gage (8) (6).
The device of seepage proof curtain simulation test the most according to claim 1, it is characterised in that: infiltration current drain pipe (14)
It is connected with by seccotine (13) with test specimen (11) and seals.
The device of seepage proof curtain simulation test the most according to claim 2, it is characterised in that: infiltration current drain pipe (14)
Bottom and the distance at test specimen (11) top, circular opening (12) bottom and the distance of test specimen (11) bottom and the radius of test specimen (11)
Identical.
The device of seepage proof curtain simulation test the most according to claim 1, it is characterised in that: cylinder (2) top is provided with cylinder
Lid (3), cover (3) is provided with a top drain pipe (4), and infiltration current drain pipe (14) may pass through drain pipe (4), both it
Between seal.
The device of seepage proof curtain simulation test the most according to claim 1, it is characterised in that: pressure chamber (1) bottom sides
Being provided with a bottom drain pipe (9), this bottom drain pipe (9) is provided with draining control valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620710250.9U CN205808885U (en) | 2016-07-07 | 2016-07-07 | A kind of device of seepage proof curtain simulation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620710250.9U CN205808885U (en) | 2016-07-07 | 2016-07-07 | A kind of device of seepage proof curtain simulation test |
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| Publication Number | Publication Date |
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| CN205808885U true CN205808885U (en) | 2016-12-14 |
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| CN201620710250.9U Active CN205808885U (en) | 2016-07-07 | 2016-07-07 | A kind of device of seepage proof curtain simulation test |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092855A (en) * | 2016-07-07 | 2016-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | The device of a kind of seepage proof curtain simulation test and test method |
| CN107102124A (en) * | 2017-04-19 | 2017-08-29 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of Hydraulic and Hydro-Power Engineering dissolution type corrodes analysis calcium amount evaluation method |
| CN110057643A (en) * | 2019-05-10 | 2019-07-26 | 新疆农业大学 | The measuring method of bituminous concrete binder course infiltration coefficient |
| CN112595648A (en) * | 2020-12-14 | 2021-04-02 | 广东省水利水电科学研究院 | Device and method for detecting seepage failure ratio degradation quality of core sample of plastic concrete wall |
-
2016
- 2016-07-07 CN CN201620710250.9U patent/CN205808885U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092855A (en) * | 2016-07-07 | 2016-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | The device of a kind of seepage proof curtain simulation test and test method |
| CN107102124A (en) * | 2017-04-19 | 2017-08-29 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of Hydraulic and Hydro-Power Engineering dissolution type corrodes analysis calcium amount evaluation method |
| CN107102124B (en) * | 2017-04-19 | 2019-12-03 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of hydraulic and hydroelectric engineering dissolution type erosion analysis calcium amount evaluation method |
| CN110057643A (en) * | 2019-05-10 | 2019-07-26 | 新疆农业大学 | The measuring method of bituminous concrete binder course infiltration coefficient |
| CN112595648A (en) * | 2020-12-14 | 2021-04-02 | 广东省水利水电科学研究院 | Device and method for detecting seepage failure ratio degradation quality of core sample of plastic concrete wall |
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