CN110376115A - A kind of bicyclic infiltration test device and its operating method of two rings one - Google Patents
A kind of bicyclic infiltration test device and its operating method of two rings one Download PDFInfo
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- CN110376115A CN110376115A CN201910815413.8A CN201910815413A CN110376115A CN 110376115 A CN110376115 A CN 110376115A CN 201910815413 A CN201910815413 A CN 201910815413A CN 110376115 A CN110376115 A CN 110376115A
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 230000008595 infiltration Effects 0.000 title claims abstract description 29
- 238000001764 infiltration Methods 0.000 title claims abstract description 29
- 125000002619 bicyclic group Chemical group 0.000 title claims abstract description 23
- 238000011017 operating method Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 147
- 238000001514 detection method Methods 0.000 claims abstract description 55
- 230000008859 change Effects 0.000 claims abstract description 25
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 239000002689 soil Substances 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 16
- 230000035699 permeability Effects 0.000 claims description 12
- 239000003153 chemical reaction reagent Substances 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 7
- 230000009466 transformation Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 239000003643 water by type Substances 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 22
- 239000000243 solution Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical group O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Abstract
The invention discloses the bicyclic infiltration test devices and its operating method of a kind of two rings one, it includes outer ring cylinder and endocyclic tube, the top connecting cover plate of outer ring cylinder, inside middle portion connecting box bottom plate, slow pressurized layer is connected on the inside of bottom end, endocyclic tube is connected between slow pressurized layer and bottom plate, cavity between bottom plate and cover board is water injecting tank, it is equipped with water injection hole on the cover board, defeated pressure pipe and level, gas passage one is equipped in outer ring barrel, water change detection bar is connected in the Basolateral of slow pressurized layer, there is communicating pipe in slow pressurized layer, defeated pressure pipe passes through gas passage one respectively, communicating pipe is connected to water change detection bar, inner ring water injection pipe and outer ring water injection pipe are connected in the bottom end of bottom plate and are connected to respectively with the inner side and outer side of endocyclic tube, valve one and flowmeter one are equipped on inner ring water injection pipe, bottom face is equipped with water level sensor one, Outer ring water injection pipe is equipped with valve two and flowmeter two, and bottom face is equipped with water level sensor two, and surveyed penetration depth is more accurate.
Description
Technical field
The present invention relates to a kind of bicyclic infiltration test devices, more particularly to a kind of bicyclic infiltration test device of two rings one
And its operating method, belong to hydrogeology and petrology, soil mechanics, hydraulic research technical field.
Background technique
Bicyclic infiltration experiment can be used for the gas permeability measurement of field Rock And Soil, belong to a kind of field in-situ test.Ground
The infiltration coefficient of body can have extremely important effect to engineering, while accurately measurement Rock And Soil infiltration coefficient can be to policymaker
There is extremely important effect, has the function of to the design safety of engineering absolute.Bicyclic infiltration tests standard apparatus in the market at present
There are many visible.But existing bicyclic infiltration realization device is there are biggish defect, first, during the experiment, in order to
It avoids bottom solum from being washed, one layer of boulder bed can be spread in bottom before experiment, not only limited by local condition, and operate numerous
It is trivial；Second, bicyclic and water injecting tank is separated from each other, and non-integral, inconvenient to carry；Third can not accurately measure penetration depth, and
It is to cause test result deviation occur come calculation permeability coefficient by estimation penetration depth.It is a problem to be solved above.
Summary of the invention
The technical problem to be solved by the present invention is providing bicyclic infiltration test device and its operation side of one kind two rings one
Method is integrally connected its inner and outer ring, while eliminating water in bicyclic infiltration test and washing away to the surface layer soil body of testing pits by delaying pressurized layer
Effect；By water change detection bar can monitor go out the variation of soil moisture content, calculate final penetration depth；
The arc ring flat-plate for controlling water change monitoring device by the pressure size of defeated pressure pipe simultaneously, achievees the effect that repeatedly to measure,
Surveyed penetration depth is more accurate, and entire bicyclic infiltration test device is based on one, and structure is simple, easy to operate, easy to carry,
Security performance is high, the above-mentioned problem of effective solution.
The technical solution of the present invention is as follows: a kind of bicyclic infiltration test device of two rings one, it includes outer ring cylinder and inner ring
Cylinder, the top of the outer ring cylinder are fixedly connected with cover board, and inside middle portion is fixedly connected with bottom plate, is connected with slow pressurized layer on the inside of bottom end,
Endocyclic tube is connected between slow pressurized layer and bottom plate, the cavity between bottom plate and cover board is water injecting tank, is equipped with note on the cover board
Water hole, defeated pressure pipe and level are equipped with gas passage one in outer ring barrel, are connected with water in the Basolateral of slow pressurized layer and become
Change detection bar, there is communicating pipe in slow pressurized layer, defeated pressure pipe passes through gas passage one, communicating pipe and water change detection bar respectively and connects
It is logical, inner ring water injection pipe and outer ring water injection pipe are fixedly connected in the bottom end of bottom plate and are connected respectively with the inner side and outer side of endocyclic tube
It is logical, valve one and flowmeter one are equipped on inner ring water injection pipe, bottom face is equipped with water level sensor one, sets on outer ring water injection pipe
There are valve two and flowmeter two, bottom face is equipped with water level sensor two.
The slow pressurized layer includes upper filter plate, packing layer and lower filter plate, is packing layer between upper filter plate and lower filter plate, upper filter plate
Outside be fixedly connected with outer ring medial wall of the tube, endocyclic tube bottom end is fixedly attached on filter plate upper surface, the outside of lower filter plate
It is fixedly attached on the inner sidewall of outer ring cylinder, the centre of lower filter plate is equipped with hole, communicating pipe passes through packing layer one end and is connected to outer ring
On cylinder inner wall, the other end is connected on the hole among lower filter plate, and water change detection bar is threadedly attached to the lateral wall in hole
On.
The water change detection bar includes connecting pin, water variation detection unit and base cone body, has spiral shell on the outside of connecting pin
Line is simultaneously connected on the lateral wall in hole, and there is gas communication hole in the centre of connecting pin and is connected to defeated pressure pipe, and the bottom end of connecting pin is solid
Surely several water variation detection units connected and be fixedly connected are connected with, change detection unit bottom end in nethermost water
It is fixedly connected with base cone body.
The water variation detection unit includes upper shell, gate valve, lower outer cylinder and lower inner cylinder, and lower outer sleeve is in lower inner cylinder
Outside and be fixedly connected by symmetrical two pieces of partitions, bottom end is fixedly connected with bottom plate, has between lower outer cylinder and lower inner cylinder pair
Two cavity bodies claimed, have rotatable arc ring flat-plate in the side of cavity body, have arc empty between arc ring flat-plate and partition
Chamber, arc ring flat-plate can be rotated in arc-shaped cavity, be connect by gate valve with upper shell on the top of lower outer cylinder and lower inner cylinder, on
The bottom inside of cylinder is fixedly connected with filter plate, and the top inner side of upper shell is fixedly connected with top plate, in top plate and filter plate
Between have a piston plate moving up and down, top plate bottom face is equipped with the range measurement probe that can measure piston Board position, upper
The barrel of cylinder is equipped with symmetrical gas passage two, and gas passage two passes through gate valve and is connected to cavity body, gas passage two
Upper end is connected to gas communication hole, chemical reagent is filled in the cavity between filter plate and gate valve, in lower inner cylinder and plate
It is filled with the reagent to absorb water by force in cavity between valve, is equipped on the side wall of inner cylinder and lower outer cylinder under the interior outside of arc-shaped cavity
Several filter hole, the moisture content in soil can be entered in lower inner cylinder by filter hole, and spring is equipped between filter plate and partition,
Several waters variation detection unit is overlapped and is fixedly connected up and down, the face F of upper water variation detection unit with it is next
The face H that water changes detection unit is overlapped.
The cover board is equipped with control unit, described control unit and valve one, flowmeter one, valve two, flowmeter two,
Water level sensor one, water level sensor two, range measurement probe and gate valve electrical connection.
A kind of operating method of the bicyclic infiltration test device of two rings one, the method step are as follows: one, installation test dress
Set: according to field test place, excavation is tested pits, it is ensured that bottom of testing pits is smooth, and water is converted the vertical borrowing of detection bar and is tested pits, will
Device, which is put into, tests pits, and so that its bottom is delayed pressurized layer and contacts bottom of testing pits, it is converted detection bar with water and is connect, is seen by level
It examines, Adjustment Tests device is horizontal；Two, initial soil moisture content measures: opening control unit, measures the water of initial Rock And Soil；
Three, gas permeability measurement: water injecting tank is connected with external water source, and the water for ensuring to have sufficient in water injecting tank always is opened
The gas permeability measurement of control unit switchs, and fills the water to inner and outer ring, makes it always and at water level sensor under inner and outer ring water injection hole
In same level, it is ensured that inner and outer ring water level is always consistent, and experimental rig carried out circulation, outer ring in primary every five minutes
Flow and water content of soil measure of the change record, and continuously record five times after stabilization to be infiltrated, are according to infiltration obtained by five data
Number takes its average value to obtain soil permeability coefficient size；Four, experimental provision is dismantled: the water in water injecting tank, in inner ring and outer rings is complete
Portion drains, and removes experimental rig, transfers to water transformation detection bar, completes this test.
The beneficial effects of the present invention are: compared with prior art, it is existing double with market using technical solution of the present invention
Ring infiltration test device is compared, which reduces surface Rock And Soil of testing pits because sluicing is to test by layer of releiving
As a result shadow, while it is lack of standardization on test result influence to also eliminate experimental rig placement.Additionally by water change detection needle
Can accurately at detection under seep depth, eliminate the disadvantage for estimating penetration depth by experience in traditional bicyclic infiltration test
End improves the precision of permeability test, and water, which converts feeler lever, to carry out different size setting according to field survey purpose.Except this
Except, entire experimental rig is based on one, is convenient for carrying, and installation easy to disassemble, achieves good using effect.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is top view of the invention；
Fig. 3 is water transformation detection rod structure schematic diagram of the invention；
Fig. 4 is water transformation detection bar top view of the invention；
Fig. 5 is water transformation detection bar A-A cross-sectional view (arc ring flat-plate opening state) of the invention；
Fig. 6 is water transformation detection bar A-A cross-sectional view (arc ring flat-plate closed state) of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below with reference to this specification attached drawing to this hair
It is bright to be described in further detail.
Embodiment 1: as shown in attached drawing 1~6, a kind of bicyclic infiltration test device of two rings one, it includes 3 He of outer ring cylinder
Endocyclic tube 2, the top of the outer ring cylinder 3 are fixedly connected with cover board 5, and inside middle portion is fixedly connected with bottom plate 41, connection on the inside of bottom end
There is slow pressurized layer 9, endocyclic tube 2 is connected between slow pressurized layer 9 and bottom plate 41, the cavity between bottom plate 41 and cover board 5 is water filling
Case 1 is equipped with water injection hole 6, defeated pressure pipe 7 and level 27 on cover board 5, and gas passage 1 is equipped in 3 wall of outer ring cylinder, slow
The Basolateral of pressurized layer 9 is connected with water change detection bar 4, has communicating pipe 39 in slow pressurized layer 9, defeated pressure pipe 7 passes through gas respectively
Channel 1, communicating pipe 39 are connected to water change detection bar 4, are fixedly connected with 8 He of inner ring water injection pipe in the bottom end of bottom plate 41
Outer ring water injection pipe 9 is simultaneously connected to the inner side and outer side of endocyclic tube 2 respectively, and valve 1 and flow are equipped on inner ring water injection pipe 8
1 are counted, bottom face is equipped with water level sensor 1, and outer ring water injection pipe 9 is equipped with valve 2 31 and flowmeter 2 34, bottom end
Face is equipped with water level sensor 2 36.
Further, delaying pressurized layer 9 includes upper filter plate 37, packing layer 40 and lower filter plate 38, upper filter plate 37 and lower filter plate 38 it
Between be packing layer 40, the outside of upper filter plate 37 is fixedly connected with 3 inner sidewall of outer ring cylinder, and 2 bottom end of endocyclic tube is fixedly attached to filter
On 37 upper surface of plate, the outside of lower filter plate 38 is fixedly attached on the inner sidewall of outer ring cylinder 3, and the centre of lower filter plate 38 is equipped with hole
42, communicating pipe 39 passes through 40 one end of packing layer and is connected on 3 inner wall of outer ring cylinder, and the other end is connected to the hole 42 among lower filter plate 38
On, water change detection bar 4 is threadedly attached on the lateral wall in hole 42.Described filler layer 40 be do not absorb water and porosity compared with
Big material, for example cobble etc..
Further, water change detection bar 4 includes connecting pin 26, water variation detection unit and base cone body 20, connection
End 26 outside have screw thread and be connected on the lateral wall in hole 42, the centre of connecting pin 26 have gas communication hole 11 and with defeated pressure pipe 7
Connection, the bottom end of connecting pin 26 is fixedly connected with several water variation detection units connected and be fixedly connected, in bottom
Water variation detection unit bottom end be fixedly connected with base cone body 20.Water change detection bar 4 is arranged every 10cm downwards from top
There is water to change detection unit.
Further, water variation detection unit includes upper shell 13, gate valve 15, lower outer cylinder 16 and lower inner cylinder 17, under
16 sets of outer cylinder lower inner cylinder 17 outside and be fixedly connected by symmetrical two pieces of partitions 25, bottom end is fixedly connected with bottom plate 19,
There are symmetrical two cavity bodies 18 between lower outer cylinder 16 and lower inner cylinder 17, has rotatable arc ring flat-plate in the side of cavity body 18
24, there is arc-shaped cavity 51 between arc ring flat-plate 24 and partition 25, arc ring flat-plate 24 can be rotated in arc-shaped cavity 51, lower outer
The top of cylinder 16 and lower inner cylinder 17 is connect by gate valve 15 with upper shell 13, and the bottom inside of upper shell 13 was fixedly connected with
Filter plate 14, the top inner side of upper shell 13 are fixedly connected with top plate 23, and having between top plate 23 and filter plate 14 can move up and down
Piston plate 12, the original state of piston plate 12 is located at bottom, and 23 bottom face of top plate, which is equipped with, can measure 12 position of piston plate
Range measurement probe 28, is equipped with symmetrical gas passage 2 10 on the barrel of upper shell 13, and gas passage 2 10 passes through plate
Valve 15 is connected to cavity body 18, and 2 10 upper end of gas passage is connected to gas communication hole 11, filter plate 14 and gate valve 15 it
Between cavity in be filled with chemical reagent 22, the reagent 21 to absorb water by force is filled in the cavity between lower inner cylinder 17 and gate valve 15,
Several filter hole are equipped on the side wall of inner cylinder 17 and lower outer cylinder 16 under the interior outside of arc-shaped cavity 51, the moisture content in soil can
It is entered in lower inner cylinder 17 by filter hole, spring, the variation detection of several waters is equipped between filter plate 14 and partition 25
Unit is overlapped and is fixedly connected up and down, the face F of upper water variation detection unit and the H of next water variation detection unit
Face is overlapped.Chemical reagent 22 is that chemical reaction occurs with water to generate the chemical reagent of the lesser gas of density.
Further, the reagent 21 to absorb water by force is montmorillonite.
Further, by external application gas source feed, the gas source as control uses defeated pressure pipe 7, by inwardly supplying, can push away
Dynamic arc ring flat-plate 24 is moved into arc-shaped cavity 51, can inner cylinder 17 and lower outer cylinder 16 under the interior outside of closed arc cavity 51
Filter hole on side wall prevents the moisture content in soil from flowing into device.When closing gas source, arc ring flat-plate 24 is in extension spring
Under the action of playback.
Further, cover board 5 is equipped with control unit, described control unit and valve 1, flowmeter 1, valve two
31, flowmeter 2 34, water level sensor 1, water level sensor 2 36, range measurement probe 28 and gate valve 15 are electrically connected.
A kind of operating method of the bicyclic infiltration test device of two rings one, the method step are as follows: one, installation test dress
Set: according to field test place, excavation is tested pits, it is ensured that and bottom of testing pits is smooth, and water is converted the detection vertical borrowing of bar 4 and is tested pits,
It places a device into and tests pits, so that its bottom is delayed pressurized layer and contact bottom of testing pits, it is converted into detection bar 4 with water and is connect, level is passed through
Instrument 27 is observed, and Adjustment Tests device is horizontal；Two, initial soil moisture content measures: opening control unit, measures initial Rock And Soil
Water；Three, gas permeability measurement: water injecting tank 1 is connected with external water source, the water for ensuring to have sufficient in water injecting tank 1 always
Amount, open control unit gas permeability measurement switch, to inner and outer ring fill the water, make its always with water level sense under inner and outer ring water injection hole
Device is answered to be in same level, it is ensured that inner and outer ring water level is always consistent, and experimental rig carried out circulation in primary every five minutes
Amount, outer ring flow and water content of soil measure of the change record, and continuously record five times after stabilization to be infiltrated, according to obtained by five data
Infiltration coefficient takes its average value to obtain soil permeability coefficient size；Four, experimental provision is dismantled: will be in water injecting tank 1, in inner ring and outer rings
Water all drain, remove experimental rig, transfer to water transformation detection bar 4, complete this test.
The working principle of this experimental rig is: after the installation is completed to entire experimental rig, measuring initial soil water, opens
The arc ring flat-plate 24 of all waters variation detection unit, makes its soil moisture enter lower inner cylinder on water change detection bar 4
17, after one minute, body of ventilating into defeated pressure pipe 7 pushes arc ring flat-plate 24, seals its lower inner cylinder 17, passes through range measurement
The initial position of 28 record piston plate 12 of probe, is denoted as X1, gate valve 15 is opened by control unit, makes the moisture absorbed and change
It learns reagent 22 to react, the gas push piston plate 12 of generation moves upwards, and it is final mobile to record it by range measurement probe 28
Position X2, the final moving distance that can measure piston plate 12 is Δ X=X1 -X2.By water injection hole 6 into water injecting tank 1 topped up with water,
Valve 1 and valve 1 are opened by control unit, while being filled the water to inner and outer ring chamber, water level sensor 1 and water are passed through
The position detection of inductor 2 36 may make that endocyclic tube 2 is identical with the water level in outer ring cylinder 3, after stabilization to be infiltrated, remember every five minutes
Flow, the water level for recording endocyclic tube 2 and outer ring cylinder 3 are primary, and the initial water step of soil as measured above measures soil water amount, with
This is repeated five times, and stops test.It can be calculated according to the size of adjacent water variation detection unit Δ X and eventually penetrate depth,
Infiltration coefficient is calculated according to Darcy's law.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.Finally, it is stated that the above reality
It applies example to be only used to illustrate the technical scheme of the present invention and not to limit it, although having carried out specifically the present invention referring to preferred embodiment
It is bright, those skilled in the art should understand that, can with modification or equivalent replacement of the technical solution of the present invention are made, and
The objective and range for not departing from technical solution of the present invention, are intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of bicyclic infiltration test device of two rings one, it is characterised in that: it includes outer ring cylinder (3) and endocyclic tube (2), institute
The top for stating outer ring cylinder (3) is fixedly connected cover board (5), and inside middle portion is fixedly connected bottom plate (41), is connected on the inside of bottom end slow
Pressurized layer (9) connects endocyclic tube (2) between slow pressurized layer (9) and bottom plate (41), the sky between bottom plate (41) and cover board (5)
Chamber is water injecting tank (1), water injection hole (6), defeated pressure pipe (7) and level (27) is equipped on cover board (5), in outer ring cylinder (3) wall
Equipped with gas passage one (30), the Basolateral in slow pressurized layer (9) is connected with water change detection bar (4), has in slow pressurized layer (9)
Communicating pipe (39), defeated pressure pipe (7) pass through gas passage one (30) respectively, are connected to water change detection bar (4) communicating pipe (39),
Inner ring water injection pipe (8) and outer ring water injection pipe (9) and the respectively inside with endocyclic tube (2) are fixedly connected in the bottom end of bottom plate (41)
It is connected to outside, valve one (32) and flowmeter one (33) is equipped on inner ring water injection pipe (8), bottom face incudes equipped with water level
Device one (35), outer ring water injection pipe (9) are equipped with valve two (31) and flowmeter two (34), and bottom face is equipped with water level sensor two
(36).
2. the bicyclic infiltration test device of two rings one according to claim 1, it is characterised in that: the slow pressurized layer (9)
It is packing layer (40) between upper filter plate (37) and lower filter plate (38) including upper filter plate (37), packing layer (40) and lower filter plate (38),
The outside of upper filter plate (37) is fixedly connected with outer ring cylinder (3) inner sidewall, and endocyclic tube (2) bottom end is fixedly attached on filter plate (37)
It on end face, is fixedly attached on the inner sidewall of outer ring cylinder (3) on the outside of lower filter plate (38), the centre of lower filter plate (38) is equipped with hole
(42), communicating pipe (39) passes through packing layer (40) one end and is connected on outer ring cylinder (3) inner wall, and the other end is connected to lower filter plate (38)
On intermediate hole (42), water change detection bar (4) is threadedly attached on the lateral wall of hole (42).
3. the bicyclic infiltration test device of two rings one according to claim 1, it is characterised in that: the water variation is visited
Measuring staff (4) includes connecting pin (26), water variation detection unit and base cone body (20), has screw thread on the outside of connecting pin (26) and connects
Onto the lateral wall of hole (42), there is gas communication hole (11) in the centre of connecting pin (26) and is connected to defeated pressure pipe (7), connecting pin
(26) bottom end is fixedly connected with several water variation detection units connected and be fixedly connected, and changes in nethermost water
Detection unit bottom end is fixedly connected with base cone body (20).
4. the bicyclic infiltration test device of two rings one according to claim 3, it is characterised in that: the water variation inspection
Surveying unit includes upper shell (13), gate valve (15), lower outer cylinder (16) and lower inner cylinder (17), and lower outer cylinder (16) covers in lower inner cylinder
(17) outside is simultaneously fixedly connected by symmetrical two pieces of partitions (25), and bottom end is fixedly connected with bottom plate (19), in lower outer cylinder (16)
There are symmetrical two cavity bodies (18) between lower inner cylinder (17), has rotatable arc ring flat-plate in the side of cavity body (18)
(24), there are arc-shaped cavity (51) between arc ring flat-plate (24) and partition (25), arc ring flat-plate (24) can be rotated to arc-shaped cavity
(51) it in, is connect by gate valve (15) with upper shell (13) on the top of lower outer cylinder (16) and lower inner cylinder (17), upper shell
(13) bottom inside is fixedly connected with filter plate (14), and the top inner side of upper shell (13) is fixedly connected with top plate (23),
Have between top plate (23) and filter plate (14) piston plate moving up and down (12), top plate (23) bottom face is equipped with can measure and live
The range measurement of seben (12) position is popped one's head in (28), and symmetrical gas passage two (10) is equipped on the barrel of upper shell (13),
Gas passage two (10) passes through gate valve (15) and is connected to cavity body (18), gas passage two (10) upper end and gas communication hole
(11) be connected to, be filled with chemical reagent (22) in the cavity between filter plate (14) and gate valve (15), in lower inner cylinder (17) and
The reagent (21) to absorb water by force is filled in cavity between gate valve (15), under the interior outside of arc-shaped cavity (51) inner cylinder (17) and
Several filter hole are equipped on the side wall of lower outer cylinder (16), the moisture content in soil can enter lower inner cylinder (17) by filter hole
It is interior, spring is equipped between filter plate (14) and partition (25), several waters change detection unit overlapping and the company of fixation up and down
It connects, the face F of upper water variation detection unit is overlapped with the face H of next water variation detection unit.
5. the bicyclic infiltration test device of two rings one according to claim 1, it is characterised in that: on the cover board (5)
Equipped with control unit, described control unit and valve one (32), flowmeter one (33), valve two (31), flowmeter two (34), water
Position inductor one (35), water level sensor two (36), range measurement probe (28) and gate valve (15) electrical connection.
6. the operating method of the bicyclic infiltration test device of two rings one according to claim 1-5, feature
It is: the method step are as follows: one, installation experimental rig: according to field test place, excavation is tested pits, it is ensured that bottom of testing pits is flat
It is whole, water is converted into the vertical borrowing of detection bar (4) and is tested pits, places a device into and tests pits, so that its bottom is delayed pressurized layer and contacts bottom of testing pits,
It is converted detection bar (4) with water to connect, is observed by level (27), Adjustment Tests device is horizontal；Two, initial soil contains
Measure of water: control unit is opened, the water of initial Rock And Soil is measured；Three, gas permeability measurement: will be water injecting tank (1) and external
Water source is connected, the water for ensuring to have sufficient in water injecting tank (1) always, opens the gas permeability measurement switch of control unit,
It is filled the water to inner and outer ring, it is made to be in same level with water level sensor under inner and outer ring water injection hole always, it is ensured that inner and outer ring water level begins
It is consistent eventually, experimental rig carried out circulation in primary, outer ring flow and water content of soil measure of the change note every five minutes
It records, is continuously recorded five times after stabilization to be infiltrated, take its average value to obtain soil permeability coefficient according to infiltration coefficients obtained by five data
Size；Four, dismantle experimental provision: by water injecting tank (1), the water in inner ring and outer rings all drain, remove experimental rig, transfer to
Water transformation detection bar (4), completes this test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815413.8A CN110376115A (en) | 2019-08-30 | 2019-08-30 | A kind of bicyclic infiltration test device and its operating method of two rings one |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815413.8A CN110376115A (en) | 2019-08-30 | 2019-08-30 | A kind of bicyclic infiltration test device and its operating method of two rings one |
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| CN110376115A true CN110376115A (en) | 2019-10-25 |
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| CN201910815413.8A Pending CN110376115A (en) | 2019-08-30 | 2019-08-30 | A kind of bicyclic infiltration test device and its operating method of two rings one |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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