CN204177710U - A kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking - Google Patents
A kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking Download PDFInfo
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- CN204177710U CN204177710U CN201420531977.1U CN201420531977U CN204177710U CN 204177710 U CN204177710 U CN 204177710U CN 201420531977 U CN201420531977 U CN 201420531977U CN 204177710 U CN204177710 U CN 204177710U
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Abstract
The utility model discloses a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking, object is truly to reflect soil body permeability, improve the measurement precision of infiltration coefficient, meet requirement of engineering, the technical scheme adopted is: comprise water supply bottle, varying head pipe and permeability vessel that placing height successively decreases successively, the water delivering orifice of water supply bottle is communicated with varying head pipe and permeability vessel respectively, varying head pipe is connected with the water inlet of permeability vessel, and varying head pipe is provided with the scale measuring height of water level; Permeability vessel comprises base, base upper end is provided with the collar, cutting ring is sleeved in the collar, collar upper end is provided with upper cover, on cover and be provided with water delivering orifice, base and upper cover can airtightly be fastened on the collar, base and on cover and be provided with permeable stone, during fastening, permeable stone lays respectively at the upper and lower two ends of cutting ring; The filter paper preventing grogs from blocking permeable stone is equipped with between upper and lower permeable stone and cutting ring; Lower permeable stone top and upper dankness stone bottom are equipped with the sealing gasket that anti-sealing flows out from cutting ring sidewall side seam.
Description
Technical field
The utility model technology belongs to soil test field, relates to a kind of permeability test instrument, is specifically related to a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking.
Background technology
Because the higher cohesive soil of saturation degree is when driving infiltration cutting ring, because the characteristic of the soil body self is easily shunk, very easily there is side seam; Extra-fine sand ~ silt is low because of cohesiveness, also easily departs from when opening and getting infiltration cutting ring, and namely the soil body departs from infiltration cutting ring wall.Soil body water permeability is obviously strengthened, and infiltration coefficient becomes large.Truly can not reflect the water permeability of the soil body, the index that provides causes erroneous judgement to design specialist, and then affects construction costs.
Summary of the invention
In order to solve the problems of the prior art, the utility model proposes one truly can reflect soil body permeability, improves the measurement precision of infiltration coefficient, meets a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking of requirement of engineering.
In order to realize above object, the technical scheme that the utility model adopts is: comprise water supply bottle, varying head pipe and permeability vessel that placing height successively decreases successively, water supply bottle is provided with the water receiving source capsule connecting water source, the water delivering orifice of water supply bottle is communicated with varying head pipe and permeability vessel respectively, varying head pipe is connected with the water inlet of permeability vessel, and varying head pipe is provided with the scale measuring height of water level;
Described permeability vessel comprises the base being provided with water inlet and the exhaust mouth of a river, base upper end is provided with the collar placing cutting ring, cutting ring is sleeved in the collar, collar upper end is provided with upper cover, on cover and be provided with water delivering orifice, described base and upper cover can airtightly be fastened on the collar, base and on cover and be provided with permeable stone, during fastening, permeable stone lays respectively at the upper and lower two ends of cutting ring, and described cutting ring is for installing soil sample; The filter paper preventing grogs from blocking permeable stone is equipped with between described upper and lower permeable stone and cutting ring; Described lower permeable stone top and upper dankness stone bottom are equipped with the sealing gasket that anti-sealing flows out from cutting ring sidewall side seam.
The external diameter of the sealing gasket on described lower permeable stone top is 8.0cm, and ring width is 10mm; The external diameter of the sealing gasket of upper dankness stone bottom is 7.4cm, and ring width is 8mm.
Described sealing gasket is plastic mattress or Emulsoid-film pad, adopts plastic mattress when soil sample is cohesive soil, adopts Emulsoid-film pad when soil sample is silt.
The thickness of described plastic mattress is 0.06mm, and the thickness of Emulsoid-film pad is 0.09mm.
Described upper and lower permeable stone edge is provided with the rubber ring stoping the water outside cutting ring to flow out from permeability vessel.
The head height of described varying head pipe is not more than 2m.
Described permeability vessel is provided with beam structure, and beam structure upper end is provided with tightening nut, when base and upper cover are fastened on the collar, utilizes tightening nut to withstand upper cover downwards, makes whole permeability vessel airtight.
Described water source is pure water.
Pipeline in described varying head permeability apparatus is flexible pipe, and flexible pipe is provided with some pipe clamps for sealing.
Compared with prior art, the improvement of the utility model permeability vessel, easily side seam is there is because the soil body shrinks when mainly getting infiltration cutting ring for saturate viscosity soil property, and Extra-fine sand, silt because of cohesiveness low, the problem departed from easily is there is, i.e. the problem that departs from infiltration cutting ring wall of the soil body when opening and getting infiltration cutting ring.Respectively cover one deck sealing gasket to the cutting ring soil body in permeability vessel is upper and lower, neither affect the water permeability of the soil body self, can flow out from the side seam between infiltration cutting ring and the soil body by anti-sealing again, thus reach the object of the different soil property water permeability of true reflection.As can be seen from practical comparison, the utility model permeameter is utilized to survey the infiltration coefficient of saturated clayey soil by record before 10
-4, 10
-5be reduced to 10
-6, survey the infiltration coefficient of silt by record before 10
-3, 10
-4be reduced to 10
-5.Embody the perviousness of soil really, improve the reliability and accuracy of surveying infiltration coefficient.
Further, in permeability vessel, upper and lower permeable stone respectively has two rubber rings, prevents in the outer water from container of cutting ring and flows out, utilize sealing gasket to prevent water in the soil body and cutting ring wall side seam to flow out simultaneously.
Further, by beam structure and tightening nut, base and upper cover can be made closely to be fastened on the collar, to ensure that the sealing of whole permeability vessel, ensure the reliability of device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of permeability vessel of the present utility model;
Fig. 3 is the collar of the present utility model and cutting ring and sealing gasket wiring layout;
Wherein, 1 be permeability vessel, 2 be pipe clamp, 3 be varying head pipe, 4 be water supply bottle, 5 be water receiving source capsule, 6 be base, 7 be the collar, 8 be upper cover, 9 be beam structure, 10 be tightening nut, 11 be water inlet, 12 for the exhaust mouth of a river, 13 be water delivering orifice, 14 be cutting ring, 15 for sealing gasket.
Embodiment
Below in conjunction with example, the utility model is described in further detail.
See Fig. 1, the utility model comprises: the water supply bottle 4 that placing height successively decreases successively, varying head pipe 3 and permeability vessel 1, water supply bottle 4 is provided with the water receiving source capsule 5 connecting pure water, the water delivering orifice of water supply bottle 4 is communicated with varying head pipe 3 and permeability vessel 1 respectively, varying head pipe 3 is connected with the water inlet of permeability vessel 1, varying head pipe 3 is provided with the scale measuring height of water level, the head height of varying head pipe 3 is not more than 2m, pipeline in whole device is flexible pipe, and flexible pipe is provided with some pipe clamps 2 for sealing.
See Fig. 2 and Fig. 3, permeability vessel 1 comprises the base 6 being provided with water inlet 11 and the exhaust mouth of a river 12, base 6 upper end is provided with the collar 7 placing cutting ring 14, cutting ring about 14 all places sealing gasket 15, cutting ring 14 is sleeved in the collar 7, the collar 7 upper end is provided with upper cover 8, upper cover 8 is provided with water delivering orifice 13, described base 6 and upper cover 8 can airtightly be fastened on the collar 7, base 6 and upper cover 8 are provided with permeable stone, during fastening, permeable stone lays respectively at cutting ring about 14 two ends, cutting ring 14 is for installing soil sample, permeability vessel 1 is provided with beam structure 9, beam structure 9 upper end is provided with tightening nut 10, when base 6 and upper cover 8 are fastened on the collar 7, tightening nut 10 is utilized to withstand upper cover 8 downwards, make whole permeability vessel 1 airtight.The filter paper preventing grogs from blocking permeable stone is equipped with between upper and lower permeable stone and cutting ring 14; Filter paper is equipped with the sealing gasket 15 that anti-sealing overflows from cutting ring 14 sidewall side seam.The external diameter of the sealing gasket on upper dankness stone filter paper is 7.4cm, and ring width is 8mm; The external diameter of the sealing gasket on lower permeable stone filter paper is 8.0cm, and ring width is 10mm.Sealing gasket is plastic mattress or Emulsoid-film pad, adopts plastic mattress when soil sample is cohesive soil, adopts Emulsoid-film pad when soil sample is silt.The thickness of plastic mattress is 0.06mm, and the thickness of Emulsoid-film pad is 0.09mm.Upper and lower permeable stone edge is provided with the rubber ring stoping the water outside cutting ring 14 to flow out from permeability vessel 1.
Permeability vessel installation process of the present utility model:
1), first will the infiltration cutting ring of side seam after sample preparation, be had to pick out;
2), on permeability vessel base permeable stone cover one deck filter paper, prevent grogs from blocking permeable stone;
3) permeable stone, covering filter paper at permeability vessel base is pasted the sealing gasket (plastic mattress or Emulsoid-film pad can be selected for different soil property) of an external diameter 8.0cm;
4), will the infiltration cutting ring of side seam be had to be installed in permeability vessel, cutting ring first being pasted external diameter be 7.4cm sealing gasket, then puts one deck filter paper;
5), add a cover upper dankness stone, the upper and lower permeable stone edge of permeability vessel is all wrapped with a rubber ring, and this rubber ring only can play the effect stoping the water outside cutting ring to flow out from permeability vessel; Complete the installation of cutting ring, namely test according to specification step afterwards.
Concrete operation step of the present utility model is as follows:
1), by the cutting ring that sample is housed load permeability vessel 1, with nut, requirement is sealed to water-tight air tight.
2) water inlet of permeability vessel 1 is connected with varying head pipe 3, the pure water in water supply bottle 4 is utilized to fill water to water inlet pipe, and infiltrate permeability vessel 1, begin to rehearse air valve, get rid of the air bottom permeability vessel 1, until overflow bubble-free in water, close exhaust water pipe 6, set level permeability vessel, put water pipe clamp into.
3) to varying head pipe 3 note pure water, water is made to rise to predetermined altitude, head height is determined according to the porousness of sample structure, generally should not be greater than 2m, cut off the water supply after stable level, drive water pipe clamp into, water is made to pass through sample, start when water delivering orifice 13 has water to overflow to survey initial head height and initial time in note varying head pipe, note head and the change of time are surveyed in interval on schedule, and survey the water temperature of note water delivering orifice.
4) by the water level conversion height in varying head pipe 3, treat that stable level carries out surveys note head and time variations again, revision test 5 ~ 6 times, the infiltration coefficient starting to measure under head when difference, when allowing in difference range, terminates to test.
Obtain from practical comparison, utilize the utility model varying head permeability apparatus, make the infiltration coefficient of saturated clayey soil by record before 10
-4, 10
-5be reduced to 10
-6, silt infiltration coefficient by record before 10
-3, 10
-4be reduced to 10
-5test findings, improve the accuracy of test, truly reflect soil body permeability, test findings meets requirement of engineering.
Be described in detail technical scheme provided by the utility model above, above explanation just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. the varying head permeability apparatus preventing infiltration cutting ring side seam from leaking, it is characterized in that: comprise water supply bottle (4), varying head pipe (3) and permeability vessel (1) that placing height successively decreases successively, water supply bottle (4) is provided with the water receiving source capsule (5) connecting water source, the water delivering orifice of water supply bottle (4) is communicated with varying head pipe (3) and permeability vessel (1) respectively, varying head pipe (3) is connected with the water inlet of permeability vessel (1), and varying head pipe (3) is provided with the scale measuring height of water level;
Described permeability vessel (1) comprises the base (6) being provided with water inlet (11) and the exhaust mouth of a river (12), base (6) upper end is provided with the collar (7) placing cutting ring (14), cutting ring (14) is sleeved in the collar (7), the collar (7) upper end is provided with upper cover (8), on cover and be provided with water delivering orifice (13), described base (6) and upper cover (8) can airtightly be fastened on the collar (7), base (6) and upper cover (8) are provided with permeable stone, during fastening, permeable stone lays respectively at cutting ring (14) two ends up and down, on, the filter paper preventing grogs from blocking permeable stone is equipped with between lower permeable stone and cutting ring (14), described cutting ring (14) is for installing soil sample, described lower permeable stone top and upper dankness stone bottom are equipped with the sealing gasket (15) that anti-sealing flows out from cutting ring (14) sidewall side seam.
2. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to claim 1, is characterized in that: the sealing gasket external diameter on described lower permeable stone top is 8.0cm, and ring width is 10mm; The sealing gasket external diameter of upper dankness stone bottom is 7.4cm, and ring width is 8mm.
3. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to claim 2, it is characterized in that: described sealing gasket is plastic mattress or Emulsoid-film pad, adopt plastic mattress when soil sample is cohesive soil, when soil sample is silt, adopt Emulsoid-film pad.
4. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to claim 3, it is characterized in that: the thickness of described plastic mattress is 0.06mm, the thickness of Emulsoid-film pad is 0.09mm.
5. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to claim 2, is characterized in that: described upper and lower permeable stone edge is provided with the rubber ring stoping cutting ring (14) water outward to flow out from permeability vessel (1).
6. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to any one of claim 1-5, is characterized in that: the head height of described varying head pipe (3) is not more than 2m.
7. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to any one of claim 1-5, it is characterized in that: described permeability vessel (1) is provided with beam structure (9), beam structure (9) upper end is provided with tightening nut (10), when base (6) and upper cover (8) are fastened on the collar (7), tightening nut (10) can withstand upper cover (8) downwards, makes whole permeability vessel (1) airtight.
8. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to any one of claim 1-5, is characterized in that: described water receiving source capsule (5) connects pure water source.
9. a kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking according to any one of claim 1-5, it is characterized in that: the pipeline in described varying head permeability apparatus is flexible pipe, and flexible pipe is provided with some pipe clamps for sealing (2).
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|---|---|---|---|
| CN201420531977.1U CN204177710U (en) | 2014-09-16 | 2014-09-16 | A kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking |
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| CN201420531977.1U CN204177710U (en) | 2014-09-16 | 2014-09-16 | A kind of varying head permeability apparatus preventing infiltration cutting ring side seam from leaking |
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Cited By (10)
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| CN104819920A (en) * | 2015-03-24 | 2015-08-05 | 河南理工大学 | Varying-head permeability experiment apparatus for indoor freezing and thawing equipment |
| CN105259064A (en) * | 2015-10-13 | 2016-01-20 | 辽宁工业大学 | Sliding abrasion testing device and calculation method with sample surface crystalline grains having preferred orientation |
| CN106226500A (en) * | 2016-09-12 | 2016-12-14 | 武汉大学 | A kind of soil saturation experiment and permeability test set composite |
| CN106706500A (en) * | 2017-01-21 | 2017-05-24 | 三峡大学 | Device for determining permeability of concrete |
| CN107589049A (en) * | 2017-08-02 | 2018-01-16 | 同济大学 | A kind of method and device for being used to determine cleaning agent diffusion coefficient in fouling membrane layer |
| CN107631976A (en) * | 2017-10-23 | 2018-01-26 | 桂林理工大学 | Seepage consolidation instrument and its application under chemico-mechanic coupling |
| CN108061696A (en) * | 2017-11-29 | 2018-05-22 | 河海大学 | A kind of device and method of indoor test mud film infiltration coefficient |
| CN108375532A (en) * | 2018-01-08 | 2018-08-07 | 东南大学 | Infiltration experiment device and test method |
| CN109030315A (en) * | 2018-08-22 | 2018-12-18 | 福州大学 | Low stress originates one-dimensional compression-infiltration experiment system and its working method |
| CN110736692A (en) * | 2019-11-04 | 2020-01-31 | 三峡大学 | automatic device and method for measuring permeability coefficient of soil body |
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- 2014-09-16 CN CN201420531977.1U patent/CN204177710U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819920A (en) * | 2015-03-24 | 2015-08-05 | 河南理工大学 | Varying-head permeability experiment apparatus for indoor freezing and thawing equipment |
| CN105259064A (en) * | 2015-10-13 | 2016-01-20 | 辽宁工业大学 | Sliding abrasion testing device and calculation method with sample surface crystalline grains having preferred orientation |
| CN105259064B (en) * | 2015-10-13 | 2017-12-01 | 辽宁工业大学 | A kind of specimen surface crystal grain has the sliding wear testing device and computational methods of preferred orientation |
| CN106226500A (en) * | 2016-09-12 | 2016-12-14 | 武汉大学 | A kind of soil saturation experiment and permeability test set composite |
| CN106706500A (en) * | 2017-01-21 | 2017-05-24 | 三峡大学 | Device for determining permeability of concrete |
| CN107589049B (en) * | 2017-08-02 | 2020-01-10 | 同济大学 | Method and device for measuring diffusion coefficient of cleaning agent in membrane pollution layer |
| CN107589049A (en) * | 2017-08-02 | 2018-01-16 | 同济大学 | A kind of method and device for being used to determine cleaning agent diffusion coefficient in fouling membrane layer |
| CN107631976A (en) * | 2017-10-23 | 2018-01-26 | 桂林理工大学 | Seepage consolidation instrument and its application under chemico-mechanic coupling |
| CN108061696A (en) * | 2017-11-29 | 2018-05-22 | 河海大学 | A kind of device and method of indoor test mud film infiltration coefficient |
| CN108061696B (en) * | 2017-11-29 | 2021-02-09 | 河海大学 | Device and method for testing permeability coefficient of mud membrane indoors |
| CN108375532A (en) * | 2018-01-08 | 2018-08-07 | 东南大学 | Infiltration experiment device and test method |
| CN109030315A (en) * | 2018-08-22 | 2018-12-18 | 福州大学 | Low stress originates one-dimensional compression-infiltration experiment system and its working method |
| CN109030315B (en) * | 2018-08-22 | 2020-11-27 | 福州大学 | Low-stress initial one-dimensional compression-penetration test system and working method thereof |
| CN110736692A (en) * | 2019-11-04 | 2020-01-31 | 三峡大学 | automatic device and method for measuring permeability coefficient of soil body |
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