CN205665144U - Core test piece infiltration coefficient measurement appearance is got in drilling - Google Patents
Core test piece infiltration coefficient measurement appearance is got in drilling Download PDFInfo
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- CN205665144U CN205665144U CN201620498038.0U CN201620498038U CN205665144U CN 205665144 U CN205665144 U CN 205665144U CN 201620498038 U CN201620498038 U CN 201620498038U CN 205665144 U CN205665144 U CN 205665144U
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a core test piece infiltration coefficient measurement appearance is got in drilling, aim at effectively avoids the influence of lateral wall seepage flow, can not only survey the ordinary ground body and aerated concrete osmotic coefficient, can also survey the osmotic coefficient that the core test piece was got in the ground body drilling of slip casting front and back, and the technical scheme who adopts is: the delivery port buffers that set gradually including top -down, experimental cavity and water inlet buffers, the delivery port buffers, fixed connection constitutes inclosed cavity between experimental cavity and water inlet buffers, the delivery port has been seted up to the lateral wall upper end of delivery port buffers, the aspirating hole has been seted up at the top of delivery port buffers, the water inlet has been seted up to the lateral wall lower extreme of water inlet buffers, the test piece is placed in the test cavity internally when experimental, set up the barrier layer between the inside wall of test piece and experimental cavity, both ends all set up the permeable bed about the test cavity was internal, the test piece is located between the permeable bed of both ends and contacts with the permeable bed when experimental.
Description
Technical field
This utility model relates to technical field of civil engineering, is specifically related to a kind of boring and coring test specimen osmotic coefficient investigating
Instrument.
Background technology
At present, conventional permeameter, particularly test standard osmotic instrument is used to measure machinable medium or loose media divides
Layer fills the infiltration coefficient of medium, and these permeameteres obtain because sidewall Seepage problems cannot be avoided not to be suitable for by core-drilling machine
The infiltration coefficient of test specimen.The existing permeameter for measuring boring and coring test specimen, is mainly used in porous concrete specimens examination
Testing, the defecator hole at test specimen two ends is relatively big, is not suitable for the mensuration of Rock And Soil infiltration coefficient before and after slip casting, and it is used for keeping away
Exempt from the measure of sidewall seepage flow or make more difficult or poor effect.
Summary of the invention
In order to solve the problems of the prior art, the utility model proposes a kind of shadow that can be prevented effectively from sidewall seepage flow
Ring, common Rock And Soil and celluar concrete infiltration coefficient can not only be measured, moreover it is possible to measure Rock And Soil boring and coring examination before and after slip casting
The boring and coring test specimen permeability coefficient determinator of the infiltration coefficient of part.
In order to realize object above, the technical scheme that this utility model is used is: include setting gradually from top to bottom
Outlet relief area, test cavity and water inlet relief area, outlet relief area, test cavity and water inlet buffering interval are fixing
Connecting and composing airtight cavity, the sidewall upper of outlet relief area offers outlet, and the top of outlet relief area is offered
Have aspirating hole, the side wall lower ends of water inlet relief area to offer water inlet, in during test, test specimen is positioned over test cavity body, test specimen with
Arranging impervious barrier between the medial wall of test cavity, in test cavity body, upper and lower two ends are respectively provided with pervious bed, and during test, test specimen is positioned at two
Contact between end pervious bed and with pervious bed.
Described aspirating hole connects vacuum pump.
The upper and lower two ends of sidewall of described test cavity are respectively arranged with water pressure table.
Described impervious barrier is paraffin layer.
Described test cavity body sidewall offers several paraffin inlets.
Described outlet relief area, test cavity and water inlet buffering interval employing flanged plate are fixed and are connected, and outlet
Relief area and water inlet relief area use sealing rubber ring to seal with the connecting portion testing cavity.
Described outlet relief area and water inlet relief area are provided with for supporting with the connecting portion testing cavity
The table top of water layer.
Described pervious bed uses permeable stone.
Compared with prior art, this utility model is by the outlet relief area set gradually from top to bottom, test cavity
Constitute airtight cavity with water inlet relief area, it is provided that experimental enviroment, after the water of water inlet enters water inlet relief area, make water have
Having certain pressure, water enters in test specimen through lower floor's pervious bed, through upper strata pervious bed after the osmosis of test specimen, and
Flow into outlet relief area, discharge from outlet, measure the hydraulic pressure at test specimen two ends, and measure the water yield in a period of time, knot
Close infiltrating area and the seepage distance of test specimen, according to Darcy's law, thus obtain the infiltration coefficient of time, additionally test specimen and test
Impervious barrier is filled in the space of cavity wall, utilizes impervious barrier to seal, prevents the water sidewall seepage flow from test specimen, thus avoid side
The impact on gas permeability measurement of the wall seepage flow.After this utility model can not only measure the loose rock soil body, celluar concrete, slip casting
The infiltration coefficient of Rock And Soil boring and coring test specimen, moreover it is possible to measure normal concrete, the seepage-resistant grade of rock, and side can be prevented effectively from
The impact of wall seepage flow, simple in construction, easy and simple to handle, test error is little.
Further, use vacuum pump to connect aspirating hole, utilize vacuum pump whole analyzer to be carried out evacuation, at the trial
The most removable air impact on seepage flow, moreover it is possible to accelerate test specimen saturated, shortens test period.
Further, impervious barrier uses paraffin layer, and test cavity body sidewall is offered paraffin inlet, led to by liquid paraffin during test
Cross in the gap, medial wall that paraffin inlet injects test specimen and test cavity, it is ensured that paraffin solidifies between being filled in uniformly densely
In gap, placed water from test specimen sidewall seepage flow, and paraffin easily removes, do not affect test next time.
Further, pervious bed uses permeable stone, permeable stone can be supported on outlet relief area and water inlet relief area with
On the connecting portion table top of test cavity, permeable stone can not only support test specimen, additionally it is possible to prevents water impact test specimen, prevents simultaneously
Only small size particle enters, and improves the accuracy of test.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model analyzer；
Wherein, 1 water inlet, 2 outlets, 3 water pressure tables, 4 paraffin layers, 5 test cavitys, 6 permeable stones, 7 tube walls, 8 enter water
Mouth relief area, 9 outlet relief areas, 10 fixed screws, 11 flanged plates, 12 sealing rubber rings, 13 aspirating holes, 14 paraffin inject
Mouthful.
Detailed description of the invention
Below in conjunction with the utility model is further explained the explanation of specific embodiment and Figure of description.
Seeing Fig. 1, this utility model includes the outlet relief area 9 set gradually from top to bottom, test cavity 5 and enters water
Mouth relief area 8, uses flanged plate 11 by fixed screw 10 between outlet relief area 9, test cavity 5 and water inlet relief area 8
Fixing connection, and the connecting portion employing sealing rubber ring 12 of outlet relief area 9 and water inlet relief area 8 and test cavity 5
Seal the cavity that composition is airtight, outlet relief area 9 and water inlet relief area 8 to be provided with the connecting portion testing cavity 5
For supporting the table top of pervious bed.The sidewall upper of outlet relief area 9 offers outlet 2, the top of outlet relief area 9
Offering aspirating hole 13, aspirating hole 13 connects vacuum pump, and the side wall lower ends of the tube wall 7 of water inlet relief area 8 offers water inlet
1, in test specimen is positioned over test cavity 5 during test, between the medial wall of test specimen and test cavity 5, impervious barrier is set, impervious barrier is stone
Wax layer 4, test cavity 5 sidewall offers several paraffin inlets 14, and in test cavity 5, two ends are respectively provided with pervious bed up and down,
Pervious bed uses permeable stone 6, and during test, test specimen contact between the pervious bed of two ends and with pervious bed, tests the sidewall of cavity 5
Two ends are respectively arranged with water pressure table 3 up and down.
Assay method of the present utility model, comprises the following steps:
1) first lower floor's pervious bed is placed in test cavity 5, then test specimen is positioned on lower floor's pervious bed, and makes examination
Part is positioned at the center position of test cavity 5, is filled in by impervious barrier in the space between test specimen and test cavity 5 medial wall, closure
Paraffin inlet 14, is placed on the upper end of test specimen by upper strata pervious bed, finally the outlet relief area 9 on upper strata and lower floor is entered water
Mouth relief area 8 is fixing after sealing with test cavity 5 to be connected；Test specimen uses common Rock And Soil test specimen, porous concrete specimens or note
Rock And Soil boring and coring test specimen before and after slurry；
2) close water inlet 1, outlet 2 and water pressure table 3, open aspirating hole 13 and outlet relief area 9, water inlet are delayed
Rush district 8 and test cavity 5 evacuation, close aspirating hole 13 after evacuation, open water inlet 1, treat that water can not go successively to into water
Behind mouth relief area 8, open outlet 2 and water pressure table 3；
3) after the water flow stationary of outlet 2, measure the hydraulic pressure at test specimen two ends, and measure outlet 2 in a period of time
Water yield, record test data the infiltration coefficient according to Darcy's law calculation testing piece, computing formula is:K in formula
For infiltration coefficient, Q is the water yield in the outlet t time, and t is time of penetration, and A is the cross-sectional area of test specimen, and L is pressure tap
Away from, Δ h is head difference (the hydraulic pressure force value conversion recorded by two water pressure gauges obtains)；
4) step 1 is repeated)～3), test of many times takes the meansigma methods permeability coefficient as final test specimen of infiltration coefficient.
Specific works process of the present utility model:
1) before test, using core-drilling machine to drill through the test specimen of suitable diameter, cutting is polishing to suitable dimension；
2) open fixed screw 10, remove outlet relief area 9, take off sealing rubber ring 12, be initially charged with lower floor's permeable stone,
Putting into test specimen, test specimen position ensures to hit exactly at test cavity 5；
3) at the jack of water pressure table 3, sizeable rubber bar is filled in, top to surface of test piece；
4), after heating solid paraffin liquefies to it, liquid paraffin is injected test specimen and test cavity 5 from paraffin inlet 14
Between space in, after paraffin solidifies again, block paraffin inlet 14, extract sticking plaster, water pressure table 3 is installed in test
Cavity about 5 two ends；
5) load onto upper strata permeable stone, sealing rubber ring 12, then outlet relief area 9 is fixed with high-strength screw；
6) closing water inlet 1, outlet 2, aspirating hole 13 connects vacuum pump, evacuation, after evacuation, closes evacuating valve,
Open water inlet 1, after water can not go successively to, open outlet 2 and water pressure table 3；
7) wait for a period of time, after waterflow stabilization, read water pressure meter reading, measure water at outlet 2 with graduated cylinder
Amount timing, record corresponding data；
8) repeat the above steps, test of many times is averaged.
9) open upper and lower high-strength screw, eject test specimen from side to opposite side.
This utility model by testing cavity 5, water inlet 1, outlet 2, aspirating hole 13, paraffin inlet 14, permeable stone 6,
Water pressure table 3 grade forms.Test cavity 5 is the position placing test specimen, and test specimen is more smaller than test cavity 5 inwall, space between the two
Seal with paraffin layer 4, to stop water paraffin inlet 14 around sidewall seepage flow, test cavity 5 to can ensure that paraffin is uniform
And closely knit filling is in the sidewall；Use vacuum pump from aspirating hole 13 evacuation, the impact on seepage flow of the most removable air, go back
Test specimen can be accelerated saturated, shorten test period；Permeable stone 6 can prevent water impact test specimen, also can prevent small size particle from leading to
Cross；Water pressure table meter is used for measuring measuring point hydraulic pressure；This utility model is possible not only to measure the loose rock soil body, celluar concrete, note
The infiltration coefficient of Rock And Soil boring and coring test specimen after slurry, moreover it is possible to measure normal concrete, the seepage-resistant grade of rock, and can effectively keep away
Exempting from the impact of sidewall seepage flow, simple to operate, test error is little.
Claims (9)
1. a boring and coring test specimen permeability coefficient determinator, it is characterised in that include the outlet set gradually from top to bottom
Relief area (9), test cavity (5) and water inlet relief area (8), outlet relief area (9), test cavity (5) and water inlet delay
Rush to fix between district (8) and connect and compose airtight cavity, the sidewall of outlet relief area (9) offers outlet (2), water inlet
Water inlet (1) is offered on the sidewall of relief area (8), in during test, test specimen is positioned over test cavity (5), test specimen and test cavity
(5) arranging impervious barrier between medial wall, in test cavity (5), two ends are respectively provided with pervious bed up and down, and during test, test specimen is positioned at two ends
Contact between pervious bed and with pervious bed.
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 1, it is characterised in that described outlet
The top of relief area (9) offers aspirating hole (13), and aspirating hole (13) connects vacuum pump.
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 1, it is characterised in that described outlet
(2) being positioned at the sidewall upper of outlet relief area (9), water inlet (1) is positioned at the side wall lower ends of water inlet relief area (8).
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 1, it is characterised in that described test cavity
The upper and lower two ends of sidewall of body (5) are respectively arranged with water pressure table (3).
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 1, it is characterised in that described impervious barrier
For paraffin layer (4).
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 5, it is characterised in that described test cavity
Body (5) sidewall offers several paraffin inlets (14).
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 1, it is characterised in that described outlet
The fixing connection of flanged plate (11), and outlet relief area is used between relief area (9), test cavity (5) and water inlet relief area (8)
(9) seal with connecting portion employing sealing rubber ring (12) testing cavity (5) with water inlet relief area (8).
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 7, it is characterised in that described outlet
Relief area (9) and water inlet relief area (8) are provided with the platform for supporting pervious bed with the connecting portion testing cavity (5)
Face.
A kind of boring and coring test specimen permeability coefficient determinator the most according to claim 8, it is characterised in that described pervious bed
Use permeable stone (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620498038.0U CN205665144U (en) | 2016-05-25 | 2016-05-25 | Core test piece infiltration coefficient measurement appearance is got in drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620498038.0U CN205665144U (en) | 2016-05-25 | 2016-05-25 | Core test piece infiltration coefficient measurement appearance is got in drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205665144U true CN205665144U (en) | 2016-10-26 |
Family
ID=57161034
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620498038.0U Expired - Fee Related CN205665144U (en) | 2016-05-25 | 2016-05-25 | Core test piece infiltration coefficient measurement appearance is got in drilling |
Country Status (1)
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| CN (1) | CN205665144U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106980A (en) * | 2017-10-25 | 2018-06-01 | 松辽流域水资源保护局松辽水环境科学研究所 | Peat saturated hydraulic conductivity assay method and measurement device |
| CN109459371A (en) * | 2018-12-25 | 2019-03-12 | 核工业北京地质研究院 | A kind of rock material measuring gas permebility device and its test method |
| CN112649342A (en) * | 2020-12-14 | 2021-04-13 | 广东省水利水电科学研究院 | Test device and method for detecting quality of horizontal permeability coefficient of green concrete |
| CN113109547A (en) * | 2021-04-25 | 2021-07-13 | 福建省地质工程勘察院 | Testing device and testing method for accelerating slope model saturation |
| CN114112846A (en) * | 2021-11-19 | 2022-03-01 | 西安石油大学 | Rock permeability measuring device for geology |
-
2016
- 2016-05-25 CN CN201620498038.0U patent/CN205665144U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106980A (en) * | 2017-10-25 | 2018-06-01 | 松辽流域水资源保护局松辽水环境科学研究所 | Peat saturated hydraulic conductivity assay method and measurement device |
| CN109459371A (en) * | 2018-12-25 | 2019-03-12 | 核工业北京地质研究院 | A kind of rock material measuring gas permebility device and its test method |
| CN109459371B (en) * | 2018-12-25 | 2024-04-09 | 核工业北京地质研究院 | Rock material gas permeability testing device and testing method thereof |
| CN112649342A (en) * | 2020-12-14 | 2021-04-13 | 广东省水利水电科学研究院 | Test device and method for detecting quality of horizontal permeability coefficient of green concrete |
| CN113109547A (en) * | 2021-04-25 | 2021-07-13 | 福建省地质工程勘察院 | Testing device and testing method for accelerating slope model saturation |
| CN114112846A (en) * | 2021-11-19 | 2022-03-01 | 西安石油大学 | Rock permeability measuring device for geology |
| CN114112846B (en) * | 2021-11-19 | 2023-09-19 | 西安石油大学 | Rock permeability measuring device for geology |
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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: 20161026 Termination date: 20170525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |