CN201876408U - Multifunctional permeameter - Google Patents
Multifunctional permeameter Download PDFInfo
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- CN201876408U CN201876408U CN2010205888261U CN201020588826U CN201876408U CN 201876408 U CN201876408 U CN 201876408U CN 2010205888261 U CN2010205888261 U CN 2010205888261U CN 201020588826 U CN201020588826 U CN 201020588826U CN 201876408 U CN201876408 U CN 201876408U
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Abstract
The utility model relates to a multifunctional permeameter, which comprises a water supply tank, a sample permeation chamber for holding a sample medium and a pressure test board. A water outlet is arranged at the bottom of the water supply tank, three overflow ports are arranged from bottom to top on the side wall of the water supply tank, each overflow port is connected with a controllable switch valve, a water collection tank with a water leakage port is sleeved to the top of the sample permeation chamber, a water inlet is arranged at the bottom of the sample permeation chamber and connected with the water outlet of the water supply tank through a water pipe, four pressure test holes distributed at equal intervals from bottom to top on a side arm of the sample permeation chamber, each pressure test hole is connected with one pressure test tube, and the pressure test tubes are fixed onto the pressure test board. The multifunctional permeameter is capable of testing permeability coefficients of two different sample media.
Description
Technical field
The utility model relates to a kind of infiltrative device of ground that is used to measure, particularly a kind of multi-functional permeameter that can be used to measure two-layered medium, different seepage flow mode infiltration coefficients.
Background technology
In Geotechnical Engineering test and the application, the infiltration coefficient of measuring rock soil medium is an important job.According to Darcy's law, osmotic coefficient k is: under the hydraulic pressure gradient I of unit, and interior flow of unit interval by unit cross-sectional area.That is:
In the formula: Q is an amount of seepage; A is the cross-sectional area of institute's test specimens; T obtains amount of seepage Q required time; I hydraulic pressure gradient is that the hydraulic pressure of unit distance falls, that is:
H is a head height, and L is the soil layer sample thickness.
Obviously, can obtain osmotic coefficient k according to formula (1) and by related experiment.
At present, according to tested media perviousness difference, the permeability test device of being used always can be divided into constant head permeability apparatus and variable head permeability test device.But all can only be used to measure single-layer medium, constant head (or varying head), the current permeance property of the rock soil medium under the single conditions such as (or from bottom to top) from top to bottom on this class apparatus function.Can't be used to measure the two-layered medium permeance property, and single cover test unit is realized the rock soil medium Penetration Signature under the multiple condition combined situation.Therefore, existing infiltration experiment device is the test simulation that can't realize the Penetration Signature of occurring in nature multi-layered aquifer, and often has certain deviation between the infiltration coefficient of test gained and the actual value.Meanwhile,, in the process of the test, corroded easily, and blocked the water filter opening, influenced test accuracy because existing infiltration experiment device adopts metal species specimen chamber etc. mostly.
The utility model content
Problem to be solved in the utility model provides a kind of multi-functional permeameter that can measure two-layered medium, overcomes the above-mentioned technical matters that prior art exists.
The utility model is solved by the following technical solutions:
Multi-functional permeameter of the present utility model, comprise water tank, hold the sample permeate chamber and the pressure measurement plate of sample medium, described water tank bottom is provided with water delivering orifice, from bottom to top is provided with three gaps on the water tank sidewall, and each gap links to each other with a gate-controlled switch valve; The sheathed water leg that has scupper in the top of described sample permeate chamber, the bottom of sample permeate chamber is provided with water inlet, this water inlet links to each other by water pipe with the water delivering orifice of described water tank, the side arm of sample permeate chamber is provided with four pressure taps that from bottom to top equidistantly distribute, each pressure tap links to each other with a piezometric tube, and all piezometric tube are fixed on the described pressure measurement plate.
Water tank described in the utility model is made by organic glass, but has perspectivity and decay resistance.
Sample permeate chamber described in the utility model is the cylinder that organic glass is made, but has perspectivity and decay resistance.
The bottom interior wall of sample permeate chamber described in the utility model is provided with three cubes, places a filter screen on this cube, and streamflow regime is stable in the filling of realization test(ing) medium and the process of the test.
The utility model also comprises a base, and described sample permeate chamber is seated on this base.
Pressure measurement plate described in the utility model is made by opaque organic glass, and above be provided with scale so that read the head height in the piezometric tube.
The utility model also comprises a tank bracket, and described water tank is placed on this tank bracket, so that the head difference of the infiltration in the process of the test to be provided.
By above technical scheme, multi-functional permeameter of the present utility model combines Darcy's law seepage theory and current continuity principle, can carry out the seepage tests of multiple mode, various combination.Can carry out single medium or two media, constant head or varying head, current from last and go up or from bottom to top multiple combination permeability test, and it is little to have test error, the accurate high characteristic of result.Obviously, this overlaps multi-functional permeameter carries out for student's designability experiment (can freely carry out the design of testing program), and necessary equipment guarantee is provided.
Description of drawings
Fig. 1 is the structural drawing of the multi-functional permeameter of the utility model.
Fig. 2 is sample permeate chamber concrete structure figure described in the utility model.
Fig. 3 for test with the multi-functional permeameter of the utility model and prior-art devices gained from top to bottom infiltration coefficient relatively scheme.
Fig. 4 relatively schemes for changing penetration mode gained infiltration coefficient with the multi-functional permeameter of the utility model.
Fig. 5 is for relatively to scheme with the infiltration coefficient of the utility model multi-functional permeameter gained two-layered medium and single-layer medium.
Embodiment
As shown in Figures 1 and 2, multi-functional permeameter of the present utility model, comprise water tank 1, hold the sample permeate chamber 2 and the pressure measurement plate 3 of sample medium, the water tank bottom is provided with water delivering orifice 11, the water tank sidewall from bottom to top is provided with three gaps 12, each gap links to each other with a gate-controlled switch valve, the sheathed water leg 5 that has scupper 51 in the top of sample permeate chamber, the bottom of sample permeate chamber is provided with water inlet 21, the water delivering orifice 11 of this water inlet 21 and water tank links to each other by water pipe, the opposite side of sample permeate chamber is provided with four pressure taps 22 that from bottom to top equidistantly distribute, each pressure tap 22 links to each other with a piezometric tube 4, all piezometric tube 4 are fixed on the pressure measurement plate 3, and the level interval between per two piezometric tube 4 is equal, and the vertical interval between per two piezometric tube also equates; Water tank 1 places on the tank bracket 7, and tank bracket is made by the metallic paint underwater paint, makes the placement surface level of water tank be higher than sample permeate chamber top levels, can increase the water supply water velocity like this.
Water tank is that transparent organic glass is made.The water tank sidewall is equidistant respectively from bottom to top to be provided with three gaps 12, and each gap is connected with the gate-controlled switch valve, water level can be controlled at three differing heights.Water tank bottom centre is above-mentioned water delivering orifice 11, with feed pipe it is connected with the sample permeate chamber.
As shown in Figure 2, the sample permeate chamber is the transparent organic glass cylinder, and barrel is placed three organic glass small cubes around the bottom, to support screen pack holder and metal screen 8.The screen pack holder is diameter 120mm, the transparent hard plastic of thick 5mm, the drainage circular hole of uniform 20 diameter 6mm.Sample permeate chamber sidewall left bottom is provided with a water inlet 21, links to each other with water tank water delivering orifice 11; Four pressure taps 22 on right side link to each other with four piezometric tube 4 respectively, and place filter screen at pressure tap 22 places, flow out from pressure tap to prevent test sample, and sheathed rubber sleeve prevent to leak.Four piezometric tube one ends are enclosed within the rubber sleeve and detachably, the other end is fixed on the side guide 3, and four level intervals with piezometric tube equate with longitudinal pitches.The pressure measurement plate is the White-opalescent organic plastic plate, and waterproof is not perishable.Sample permeate chamber top sheathed one cylindrical water leg 5, water leg left side one scupper, 51 recyclable seepage water yield Q.
Also comprise the base of being made by transparent organic glass 6, base is provided with a hollow groove, and sample permeate chamber 2 can directly be inserted in the hollow groove of base, to increase the whole counterweight of device, plays the fixedly effect of sample permeate chamber.
Various combination according to the permeating medium upper-lower position of single medium, the two-layered medium (exchange), seepage flow mode (infiltration current can from bottom to up or from the top down), experimental technique (hydrostatic head method or variable water level method) etc., the utility model can be carried out 12 kinds of dissimilar permeability tests, measure the infiltration coefficient of the rock soil medium under two-layered medium, the different seepage flow mode combination condition, see Table 1.
Table 1
For degree of accuracy and the applicability of checking this multi-functional permeameter, the applicant has finished the experimental study of 12 kinds of different operating modes of two class samples, two kinds of test methods in the table 1, and has obtained the permeability parameters of measured medium under the corresponding operating mode.As space is limited, provide the test findings (seeing Fig. 1-3) of part operating mode here.
Sample permeate chamber 2 is placed in the base 6, connects instrument, notice that interface does not allow to leak by Fig. 1.Place bottom filter holder and filter screen earlier, put into the ground floor sample again.Attention: with hitting rod tamping sample gently.On the ground floor medium, put into filter screen then, put into second layer sample afterwards, the same tamping.Note the pressure tap position when placing sample, need comprise two pressure tap in every layer of sample.Close the tongs of water tank, to the water tank water filling.Constant head test need be selected suitable water level (the gate-controlled switch valve on control water tank right side), opens the gate-controlled switch valve, superfluous water is overflowed be maintained fixed head.Open tongs, make current enter the water inlet in sample permeate chamber left side along feed pipe, current slowly infiltrate from bottom to top.After treating that two-layer sample is all saturated, water can overflow from top water leg scupper.Whether rectifying inspection sample and piezometric tube joint leak or the gas collection phenomenon.After correction finishes, test by constant head and varying head respectively.
Put sample as stated above well and proofread and correct errorless after, carry out the following experiment of two media samples:
(1) constant head test:
1. open a gate-controlled switch valve of water tank, determine that the water tank head height is constant, continue to supply water, after piezometric head is stable, measure the head difference Δ h of contained two piezometric tube of each sample;
2. measure the water leg scupper through the amount of seepage Q of t time and repeat once;
3. the water temperature at record water inlet this moment and water delivering orifice place is got its mean value;
4. close above-mentioned gate-controlled switch valve, open another water tank gate-controlled switch valve, regulate the water tank head height, change hydraulic gradient, repeat above-mentioned steps 1.-3..
(2) varying head test procedure:
1. determine head elemental height in the water tank, no longer continue after determining well to supply water, start stopwatch, record piezometric tube head h1 and time t1 at this moment, behind t after a while, survey the head h2 and the time t2 of note piezometric tube again, and survey the water temperature of remembering the mouth of a river and water delivering orifice into, so again through surveying note once more after a while;
7. the height of initial water level in the conversion water tank repeats above-mentioned steps 1. five times.
The test of above-mentioned constant head and varying head is seepage tests from the bottom up.Linking to each other with the scupper of water leg by the feed water inlet that makes water tank, and the scupper of the water inlet of sample permeate chamber bottom as the collection amount of seepage, repeat above-mentioned two kinds of tests, then is the seepage tests from top to bottom of constant head and varying head.
When test sample was single uniform dielectric, filter screen can not placed in the centre, directly tests.When sample is single uniform dielectric, substantially with the darcy permeability test.Difference is that four piezometric tube can be measured a plurality of head difference and average; Direct reading on the pressure measurement plate.
Test by above test gained data and with device of the prior art and to obtain following view: Fig. 3, Fig. 4 and Fig. 5 after the gained data analysis is calculated.
Claims (7)
1. multi-functional permeameter, comprise water tank (1), hold the sample permeate chamber (2) and the pressure measurement plate (3) of sample medium, it is characterized in that, described water tank bottom is provided with water delivering orifice (11), from bottom to top be provided with three gaps (12) on the water tank sidewall, each gap links to each other with a gate-controlled switch valve; The sheathed water leg (5) that has scupper (51) in the top of described sample permeate chamber, the bottom of sample permeate chamber is provided with water inlet (21), this water inlet (21) links to each other by water pipe with the water delivering orifice (11) of described water tank, the side arm of sample permeate chamber is provided with four pressure taps (22) that from bottom to top equidistantly distribute, each pressure tap (22) links to each other with a piezometric tube (4), and all piezometric tube are fixed on the described pressure measurement plate (3).
2. multi-functional permeameter according to claim 1 is characterized in that: described water tank is made by organic glass.
3. multi-functional permeameter according to claim 1 is characterized in that: described sample permeate chamber is the cylinder that organic glass is made.
4. multi-functional permeameter according to claim 3 is characterized in that: the bottom interior wall of described sample permeate chamber is provided with three cubes, places a filter screen (8) on this cube.
5. require each described multi-functional permeameter of 1-4 according to aforesaid right, it is characterized in that described pressure measurement plate (3) is made by opaque organic glass, and above be provided with scale.
6. multi-functional permeameter according to claim 5 is characterized in that: also comprise a base (6), described sample permeate chamber (2) is seated on this base.
7. multi-functional permeameter according to claim 6 is characterized in that: also comprise a tank bracket (7), described water tank (1) is placed on this tank bracket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205888261U CN201876408U (en) | 2010-11-02 | 2010-11-02 | Multifunctional permeameter |
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| CN2010205888261U CN201876408U (en) | 2010-11-02 | 2010-11-02 | Multifunctional permeameter |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324202A (en) * | 2011-09-21 | 2012-01-18 | 青岛石大石仪科技有限责任公司 | Self-circulation axial-radial seepage Darcy law experimental apparatus |
| CN103344538A (en) * | 2013-06-25 | 2013-10-09 | 西安科技大学 | Multifunctional unsaturated soil permeameter and testing method thereof |
| CN104614297A (en) * | 2015-01-28 | 2015-05-13 | 广西大学 | Geotechnical composite drainage material filter membrane horizontal seepage clogging discounting test device and test method thereof |
| CN104655543A (en) * | 2015-01-28 | 2015-05-27 | 广西大学 | Vertical permeability clogging and reduction testing device of geocomposite drainage material filter membrane and detection method thereof |
| CN105547955A (en) * | 2015-12-10 | 2016-05-04 | 桂林理工大学 | Obstruction testing method for soil permeability under constant flow velocity |
| CN105588796A (en) * | 2015-12-17 | 2016-05-18 | 扬州大学 | Device for accurately and rapidly determining permeability coefficient of soil |
| CN106053317A (en) * | 2016-06-13 | 2016-10-26 | 同济大学 | Unsaturated garbage soil bidirectional gas permeability coefficient determinator |
| CN106483055A (en) * | 2016-09-22 | 2017-03-08 | 绍兴文理学院 | A kind of measurement capillary barrier material air-entry value and the integrated apparatus of infiltration coefficient |
| CN106706501A (en) * | 2017-02-22 | 2017-05-24 | 中国水利水电科学研究院 | Expansive soil saturated water conduction coefficient determination system and method |
| CN106771615A (en) * | 2016-11-25 | 2017-05-31 | 江苏科技大学 | A kind of soil body electrical conductance and permeability multipurpose test system and method for testing |
| CN107192651A (en) * | 2017-05-25 | 2017-09-22 | 昆明理工大学 | A kind of tailing dam silting phenomena simulation device |
| CN107807081A (en) * | 2017-10-18 | 2018-03-16 | 中国铁路设计集团有限公司 | A kind of roadbed filling permeameter and roadbed filling product method, method of testing |
| CN108181220A (en) * | 2017-12-13 | 2018-06-19 | 浙江大学 | The experimental rig of coarse-grained soil horizontal direction and vertical saturation permeability coefficient under different pressures is tested in a kind of interior simultaneously |
| CN108562617A (en) * | 2018-03-14 | 2018-09-21 | 中国石油天然气集团有限公司 | A kind of device and system for measuring rock core and moving electrical response characteristics |
| CN109612907A (en) * | 2018-12-27 | 2019-04-12 | 太原理工大学 | Fractured coal and rock testing permeability experimental rig and method |
| CN109975190A (en) * | 2018-12-27 | 2019-07-05 | 辽宁工程技术大学 | A kind of measurable infiltrative device of different height ore pillar |
| CN110658120A (en) * | 2018-06-28 | 2020-01-07 | 中南大学 | Method and device for testing permeability coefficient of foam-improved sandy residue soil under high water pressure |
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2010
- 2010-11-02 CN CN2010205888261U patent/CN201876408U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102324202B (en) * | 2011-09-21 | 2013-10-16 | 青岛石大石仪科技有限责任公司 | Self-circulation axial-radial seepage Darcy law experimental apparatus |
| CN102324202A (en) * | 2011-09-21 | 2012-01-18 | 青岛石大石仪科技有限责任公司 | Self-circulation axial-radial seepage Darcy law experimental apparatus |
| CN103344538A (en) * | 2013-06-25 | 2013-10-09 | 西安科技大学 | Multifunctional unsaturated soil permeameter and testing method thereof |
| CN103344538B (en) * | 2013-06-25 | 2016-01-06 | 西安科技大学 | A kind of unsaturated soil Multifunctional permeameter and method of testing thereof |
| CN104614297A (en) * | 2015-01-28 | 2015-05-13 | 广西大学 | Geotechnical composite drainage material filter membrane horizontal seepage clogging discounting test device and test method thereof |
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| CN105588796B (en) * | 2015-12-17 | 2018-01-23 | 扬州大学 | A kind of device of accurate quick measure soil permeability coefficient |
| CN105588796A (en) * | 2015-12-17 | 2016-05-18 | 扬州大学 | Device for accurately and rapidly determining permeability coefficient of soil |
| CN106053317A (en) * | 2016-06-13 | 2016-10-26 | 同济大学 | Unsaturated garbage soil bidirectional gas permeability coefficient determinator |
| CN106483055A (en) * | 2016-09-22 | 2017-03-08 | 绍兴文理学院 | A kind of measurement capillary barrier material air-entry value and the integrated apparatus of infiltration coefficient |
| CN106771615B (en) * | 2016-11-25 | 2019-09-03 | 江苏科技大学 | A kind of soil body electrical conductance and permeability multipurpose test system and test method |
| CN106771615A (en) * | 2016-11-25 | 2017-05-31 | 江苏科技大学 | A kind of soil body electrical conductance and permeability multipurpose test system and method for testing |
| CN106706501A (en) * | 2017-02-22 | 2017-05-24 | 中国水利水电科学研究院 | Expansive soil saturated water conduction coefficient determination system and method |
| CN106706501B (en) * | 2017-02-22 | 2019-03-01 | 中国水利水电科学研究院 | A kind of measurement system and method for dilative soil saturation coefficient of transmissibility |
| CN107192651A (en) * | 2017-05-25 | 2017-09-22 | 昆明理工大学 | A kind of tailing dam silting phenomena simulation device |
| CN107807081A (en) * | 2017-10-18 | 2018-03-16 | 中国铁路设计集团有限公司 | A kind of roadbed filling permeameter and roadbed filling product method, method of testing |
| CN108181220A (en) * | 2017-12-13 | 2018-06-19 | 浙江大学 | The experimental rig of coarse-grained soil horizontal direction and vertical saturation permeability coefficient under different pressures is tested in a kind of interior simultaneously |
| CN108181220B (en) * | 2017-12-13 | 2024-02-27 | 浙江大学 | Test device for simultaneously testing horizontal and vertical saturation permeability coefficients of coarse-grained soil under different pressures indoors |
| CN108562617A (en) * | 2018-03-14 | 2018-09-21 | 中国石油天然气集团有限公司 | A kind of device and system for measuring rock core and moving electrical response characteristics |
| CN110658120A (en) * | 2018-06-28 | 2020-01-07 | 中南大学 | Method and device for testing permeability coefficient of foam-improved sandy residue soil under high water pressure |
| CN110658120B (en) * | 2018-06-28 | 2021-04-16 | 中南大学 | Method and device for testing permeability coefficient of foam-improved sandy residue soil under high water pressure |
| CN109975190A (en) * | 2018-12-27 | 2019-07-05 | 辽宁工程技术大学 | A kind of measurable infiltrative device of different height ore pillar |
| CN109612907A (en) * | 2018-12-27 | 2019-04-12 | 太原理工大学 | Fractured coal and rock testing permeability experimental rig and method |
| CN112666060A (en) * | 2020-12-17 | 2021-04-16 | 北京航空航天大学 | Penetration tester for researching soil body penetration destruction characteristics |
| CN112945826A (en) * | 2021-01-29 | 2021-06-11 | 河海大学 | Gradient ratio experimental device and experimental method |
| CN112945826B (en) * | 2021-01-29 | 2022-09-30 | 河海大学 | Gradient ratio experimental device and experimental method |
| CN113109231A (en) * | 2021-03-30 | 2021-07-13 | 中国电建集团西北勘测设计研究院有限公司 | Pressure measuring extension pipe for large-scale penetration test and operation method thereof |
| CN113109231B (en) * | 2021-03-30 | 2022-04-01 | 中国电建集团西北勘测设计研究院有限公司 | Pressure measuring extension pipe for large-scale penetration test and operation method thereof |
| CN116840125A (en) * | 2023-07-05 | 2023-10-03 | 长安大学 | Device and method for testing water permeability anisotropy of road base granule |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20131102 |