CN102680377A - Test device for measuring rising heights and speeds of porous medium capillary water - Google Patents
Test device for measuring rising heights and speeds of porous medium capillary water Download PDFInfo
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- CN102680377A CN102680377A CN2012101830015A CN201210183001A CN102680377A CN 102680377 A CN102680377 A CN 102680377A CN 2012101830015 A CN2012101830015 A CN 2012101830015A CN 201210183001 A CN201210183001 A CN 201210183001A CN 102680377 A CN102680377 A CN 102680377A
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Abstract
The invention relates to a test device for measuring rising heights and speeds of porous medium capillary water. The test device is characterized by comprising a water tank (1), a drain pipe (2), a drain pipe switch (3), a three-way joint (4), a three-way switch (5), a piezometric tube (6), an overflow tube (7), an overflow tube switch (8), a capillary tube (9), lower permeable stones (10), coarse sand (11), upper permeable stones (12), an exhaust pipe switch (13), an exhaust pipe (14), soil collecting hole plugs (5), test samples (16), a test sample cylinder (17), a plastic pipe (18), a water supplementing pipe (19) and a water supplementing pipe switch (20). The manufacturing of the instruments used by the method is simple, the measurement accuracy is high, the usage is convenient, rising height control requirements of sample capillary water are met, the method can be directly used for measuring parameters of rising heights and speeds of capillary water of various porous media such as sand, sandy soil and floury soil, and can be used indoor or field testing of parameters of the rising heights and speeds of various porous medium capillary water in civil engineering.
Description
Technical field
The present invention is a kind of geotechnological proving installation, belongs to building (ground) field of engineering technology.
Background technology
Capillarity in the porous medium is at the nature ubiquity, and its inner diphasic flow no matter be to medium itself or polyphasic flow system, all has engineering background widely.Capillarity is to produce owing to the power that attracts each other between grogs and the hydrone and the surface tension of water in the soil.The capillary water height test can be obtained the lifting height and the ascending velocity thereof of native inner capillary water; When being used to estimate the underground water table rising; Whether certain areas can become marsh or salinization of soil; Buildings has or not the problems such as possibility of being soaked, and can be used to calculate the necessary degree of depth of lowering of watertable.The method of measuring capillary water height at present is more, and every kind of method is directed against different types of porous medium, and does not also realize standardized operation.This application will be invented a kind of test unit exactly, to be applicable to the measurement of multiple porous medium capillary water height and speed.
Summary of the invention
The object of the invention provides a kind of capillary water height measurement mechanism that is applicable to porous medium, the measurement problem of capillary water height and speed in solution sand or the silt.
Technical solution of the present invention is characterized in that a kind of test unit that measures porous medium capillary water height and speed comprises water tank 1, downcomer 2, downcomer switch 3, three-way connection 4, three-way cock 5; Piezometric tube 6, overflow pipe 7, overflow pipe switch 8, kapillary 9, following permeable stone 10; Coarse sand 11, upper dankness stone 12, gas outlet switch 13, gas outlet 14, stopple 15 fetches earth; Sample 16, test specimen tube 17, plastic tube 18, filling pipe 19, filling pipe switch 20.Water tank 1 is connected with piezometric tube 6 through downcomer 2, and piezometric tube 6 is connected with kapillary 9 through plastic tube 18, and downcomer 2 is connected with piezometric tube 6 through filling pipe 19; Filling pipe 19 is through 20 controls of filling pipe switch, and downcomer 2 is equipped with downcomer switch 3, and three-way connection 4 is equipped with three-way cock 5; Piezometric tube 6 is connected with overflow pipe 7, and overflow pipe 7 is covered with coarse sand 11 through 8 controls of overflow pipe switch above the following permeable stone 10; Upper dankness stone 12 is installed above the coarse sand 11, and upper dankness stone 12 surfaces are covered with filter paper, and sample 16 is housed above the filter paper; Test specimen tube 17 connects gas outlet 14, and gas outlet 14 is through 13 controls of gas outlet switch, and test specimen tube 17 is equipped with a plurality of stopples 15 that fetch earth; Test specimen tube 17 thickness are greater than 0.5cm, and internal diameter is greater than 3-4cm, and piezometric tube 6 outer walls have scale value; Minimum scale is 1mm, and 0 of scale is positioned at the scale value top, and flushes with upper dankness stone 12 end faces.
Advantage of the present invention:
The instrument manufacturing is simple, and measuring accuracy is high, and is easy to use, satisfies sample capillary water height control requirement, can directly measure the parameters such as capillary water height and speed that various porous mediums comprise sand, sand, silt.
The scope of application of the present invention;
Various porous medium capillary water heights that can be used for running in the civil engineering work and the isoparametric indoor or on-the-spot test of speed.
Description of drawings:
Fig. 1 is a kind of structural representation that measures the test unit of porous medium capillary water height and speed.Wherein have: water tank 1, downcomer 2, downcomer switch 3, three-way connection 4, three-way cock 5; Piezometric tube 6, overflow pipe 7, overflow pipe switch 8, kapillary 9, following permeable stone 10; Coarse sand 11, upper dankness stone 12, gas outlet switch 13, gas outlet 14, stopple 15 fetches earth; Sample 16, test specimen tube 17, plastic tube 18, filling pipe 19, filling pipe switch 20.
Embodiment:
Embodiment: utilize the test method of this device measurement porous medium capillary water height following:
(1) test method of sand capillary water height:
1. will descend permeable stone 10 to put into coupon 17,, install permeable stone 12 above the coarse sand 11, shop one deck filter paper above the upper dankness stone 12 spreading the thick coarse sand 11 of 1cm down above the permeable stone 10;
2. get the air-dry sand of 1.5kg, disperse to be sprinkled in the coupon 17, with tamper tamping gently, reach required dry density, 0 scale value in piezometric tube 6 tops this moment should flush in sample 16 lower surfaces;
3. close downcomer switch 3, three-way cock 5 and filling pipe switch 20, open overflow pipe switch 8 and gas outlet switch 13, fills with water in the water tank 1;
4. open downcomer switch 3, water slowly flowed in piezometric tube 6 and the kapillary 9, treat 12 exhausts of water-soaked upper dankness stone after, close gas outlet switch 13;
5. treat that water begins to soak sample 16 bottoms, and after overflow pipe 7 begins to have water to overflow, close downcomer switch 3; And pick up counting, through 5,10,20,30,60min respectively writes down capillary water height one time, later on according to the depth of capillary water rising degree and sand color; Every at a distance from counting hour record once; Obtain capillary water height, draw capillary water height and time curve, obtain the capillary water climbing speed;
6. test is carried out, and when overflow pipe 7 anhydrous the dripping, slowly is interrupted repeatedly and opens filling pipe switch 20, to piezometric tube 6 water fillings, water droplet following time is arranged to overflow pipe 7, closes filling pipe switch 20;
7. after the off-test, open the stopple 15 that fetches earth of test specimen tube 17 from top to bottom, scoop out an amount of sample 16, carry out water cut test, draw sample 16 water percentage and capillary water height curve with little spoon.
(2) test method of silt capillary water height:
1. will descend permeable stone 10 to put into coupon 17,, install permeable stone 12 above the coarse sand 11, shop one deck filter paper above the upper dankness stone 12 spreading the thick coarse sand 11 of 1cm down above the permeable stone 10;
2. get air-dry silt 1.5kg, disperse to be sprinkled in the coupon 17, with tamper tamping gently, reach required dry density after,, sample 16 peripheries seal with paraffin with test specimen tube 17 contacts site, 0 scale value in piezometric tube top this moment should flush in sample 16 lower surfaces;
3. when adopting original state silt sample; Measure sample water percentage and density earlier; Then the silt sample diameter is whittled into test specimen tube 17 internal diameters sizes, height of specimen is the twice of diameter, sample is slowly put into test specimen tube 17 after; Sample 16 peripheries seal with paraffin with test specimen tube 17 contacts site, and 0 scale value in piezometric tube top this moment should flush in sample 16 lower surfaces;
4. close downcomer switch 3, three-way cock 5, filling pipe switch 20 and overflow pipe switch 8 successively, open gas outlet switch 13, fills with water in the water tank 1;
5. open downcomer switch 3, water slowly flowed in piezometric tube 6 and the kapillary 9, treat 12 exhausts of water-soaked upper dankness stone after, close gas outlet switch 13;
6. be interrupted opening or closing downcomer switch 3 slowly, make gently from bottom to top saturated sample 16 of water, during to sample 16 surperficial water breakthroughs, close downcomer switch 3;
7. drive three-way cock 5 slowly, piezometric tube 6 waters surface are slowly descended gradually, the water surface stops to descend or when beginning to raise, writes down water surface scale value reading in the piezometric tube 6 this moment to the pipe, is the capillary water height of this test sample 16;
8. repeat 5.-7., get the arithmetic mean of measuring the result for 2 times, be the capillary water height of this sample 16;
9. after the off-test, open the stopple 15 that fetches earth of test specimen tube 17 from top to bottom, scoop out an amount of sample 16, carry out water cut test, draw sample 16 water percentage and capillary water height curve with little spoon.
Claims (1)
1. a test unit that measures porous medium capillary water height and speed is characterized in that this device comprises water tank (1), downcomer (2), downcomer switch (3), three-way connection (4); Three-way cock (5), piezometric tube (6), overflow pipe (7), overflow pipe switch (8), kapillary (9); Following permeable stone (10), coarse sand (11), upper dankness stone (12), gas outlet switch (13); Gas outlet (14), the stopple that fetches earth (15), sample (16), test specimen tube (17); Plastic tube (18), filling pipe (19), filling pipe switch (20), water tank (1) is connected with piezometric tube (6) through downcomer (2); Piezometric tube (6) is connected with kapillary (9) through plastic tube (18), and downcomer (2) is connected with piezometric tube (6) through filling pipe (19), and filling pipe (19) is through filling pipe switch (20) control, and downcomer (2) is equipped with downcomer switch (3); Three-way connection (4) is equipped with three-way cock (5), and piezometric tube (6) is connected with overflow pipe (7), and overflow pipe (7) is covered with coarse sand (11) through overflow pipe switch (8) control above the following permeable stone (10); Upper dankness stone (12) is installed above the coarse sand (11), and upper dankness stone (12) surface is covered with filter paper, and sample (16) is housed above the filter paper, and test specimen tube (17) connects gas outlet (14); Gas outlet (14) is through gas outlet switch (13) control, and test specimen tube (17) is equipped with a plurality of stopples that fetch earth (15), and test specimen tube (17) thickness is greater than 0.5cm, and internal diameter is greater than 3-4cm; Piezometric tube (6) outer wall has scale value, and minimum scale is 1mm, and 0 of scale is positioned at the scale value top, and flushes with upper dankness stone (12) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183001.5A CN102680377B (en) | 2012-06-06 | 2012-06-06 | Test device for measuring rising heights and speeds of porous medium capillary water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183001.5A CN102680377B (en) | 2012-06-06 | 2012-06-06 | Test device for measuring rising heights and speeds of porous medium capillary water |
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| Publication Number | Publication Date |
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| CN102680377A true CN102680377A (en) | 2012-09-19 |
| CN102680377B CN102680377B (en) | 2014-06-18 |
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| CN201210183001.5A Expired - Fee Related CN102680377B (en) | 2012-06-06 | 2012-06-06 | Test device for measuring rising heights and speeds of porous medium capillary water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117102A (en) * | 2012-12-18 | 2013-05-22 | 浙江建安检测研究院有限公司 | Point source manufacturing method and capillary tube used for positron emission tomography (PET) detection |
| CN103792174A (en) * | 2014-03-03 | 2014-05-14 | 中国科学院地质与地球物理研究所 | Rock and earth mass fixed water head replenishment type seepage test device under loading condition |
| CN106769787A (en) * | 2017-02-17 | 2017-05-31 | 宿州学院 | A kind of multimedium infiltration experiment device and its method of testing |
| CN114047100A (en) * | 2021-10-20 | 2022-02-15 | 长沙理工大学 | Test device for measuring rising height and rate of porous medium capillary water |
| CN114689822A (en) * | 2022-03-31 | 2022-07-01 | 中国电建集团成都勘测设计研究院有限公司 | Device for measuring capillary water rising height of soil body on site and using method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692035A (en) * | 2009-10-13 | 2010-04-07 | 东南大学 | Capillary soil water climbing height measuring device |
| CN202002832U (en) * | 2010-12-30 | 2011-10-05 | 吉林省公路勘测设计院 | Roadbed capillary water increasing height molding test instrument |
| CN202008457U (en) * | 2010-12-30 | 2011-10-12 | 吉林省公路勘测设计院 | Tester for capillary water height under freezing and thawing cycle state of roadbed |
-
2012
- 2012-06-06 CN CN201210183001.5A patent/CN102680377B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692035A (en) * | 2009-10-13 | 2010-04-07 | 东南大学 | Capillary soil water climbing height measuring device |
| CN202002832U (en) * | 2010-12-30 | 2011-10-05 | 吉林省公路勘测设计院 | Roadbed capillary water increasing height molding test instrument |
| CN202008457U (en) * | 2010-12-30 | 2011-10-12 | 吉林省公路勘测设计院 | Tester for capillary water height under freezing and thawing cycle state of roadbed |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117102A (en) * | 2012-12-18 | 2013-05-22 | 浙江建安检测研究院有限公司 | Point source manufacturing method and capillary tube used for positron emission tomography (PET) detection |
| CN103117102B (en) * | 2012-12-18 | 2015-05-27 | 浙江建安检测研究院有限公司 | Point source manufacturing method and capillary tube used for positron emission tomography (PET) detection |
| CN103792174A (en) * | 2014-03-03 | 2014-05-14 | 中国科学院地质与地球物理研究所 | Rock and earth mass fixed water head replenishment type seepage test device under loading condition |
| CN103792174B (en) * | 2014-03-03 | 2016-02-10 | 中国科学院地质与地球物理研究所 | Under a kind of loading environment, Rock And Soil determines head supply formula seepage flow test device |
| CN106769787A (en) * | 2017-02-17 | 2017-05-31 | 宿州学院 | A kind of multimedium infiltration experiment device and its method of testing |
| CN114047100A (en) * | 2021-10-20 | 2022-02-15 | 长沙理工大学 | Test device for measuring rising height and rate of porous medium capillary water |
| CN114047100B (en) * | 2021-10-20 | 2023-12-15 | 长沙理工大学 | Test device for measuring capillary water elevation and capillary water velocity of porous medium |
| CN114689822A (en) * | 2022-03-31 | 2022-07-01 | 中国电建集团成都勘测设计研究院有限公司 | Device for measuring capillary water rising height of soil body on site and using method thereof |
| CN114689822B (en) * | 2022-03-31 | 2023-03-17 | 中国电建集团成都勘测设计研究院有限公司 | Device for measuring capillary water rising height of soil body on site and using method thereof |
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| Publication number | Publication date |
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| CN102680377B (en) | 2014-06-18 |
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