CN2901309Y - Column soil layer water supply degree detector - Google Patents

Column soil layer water supply degree detector Download PDF

Info

Publication number
CN2901309Y
CN2901309Y CN 200620096893 CN200620096893U CN2901309Y CN 2901309 Y CN2901309 Y CN 2901309Y CN 200620096893 CN200620096893 CN 200620096893 CN 200620096893 U CN200620096893 U CN 200620096893U CN 2901309 Y CN2901309 Y CN 2901309Y
Authority
CN
China
Prior art keywords
organic glass
water supply
glass post
soil layer
sample organic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200620096893
Other languages
Chinese (zh)
Inventor
梁杏
郭会荣
张人权
高云福
马传明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Geosciences
Original Assignee
China University of Geosciences
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Geosciences filed Critical China University of Geosciences
Priority to CN 200620096893 priority Critical patent/CN2901309Y/en
Application granted granted Critical
Publication of CN2901309Y publication Critical patent/CN2901309Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to in an in-house horizon feed water measuring device, a columnar horizon feed water determinator, which comprises a piezometric board (2). It is characterized in that: a sample plexiglass column (4) is at least provided with two or more argil head negative pressure testing connector (6), positive pressure testing connector (8), bottom of the sample plexiglass column (4) is located with plexiglass column bottom connector (12), water supply/ drainage installation (22) with drain tap (23) are arranged on the lifting device, bottom of which is provided with a water supply/ drainage connector (16), a measuring cup (24) is located below of the drain tap (23), one end of the third flexible conduit (18) is communicated with the water supply/ drainage connector (16), the other end of the third flexible conduit (18) with the plexiglass column bottom connector (12). The utility model is characterized in convenient measuring and little error.

Description

A kind of column soil layer specific yield analyzer
Technical field
The utility model relates to a kind of indoor soil layer specific yield determinator.
Background technology
Soil body specific yield is the important indicator of soil layer physical characteristics, is unusual important parameters in holard research, water and soil pollutants transfer and Evaluation of Groundwater Resources.Traditional indoor measurement method is to measure with small-sized specific yield instrument at present, sample to be tested is packed in the little test specimen tube, the water that utilizes the negative pressure of test specimen tube bottom permeable stone will satisfy in the water sample withdraws from, use buret (or graduated cylinder) to measure the water-break amount again, the water-break amount is the specific yield of sample to be tested divided by the test specimen tube volume.The shortcoming of this method is to survey the very little sample of volume, and test result is influenced by the permeable stone negative pressure in addition.It obviously is irrational that the result of indoor small sample is replaced on-the-spot soil layer condition.Because actual soil layer volume is generally very big, and there was certain error in the influence of factor such as decline of water table speed between the true specific yield of specific yield that traditional method of testing draws and soil layer when soil layer feedwater feature was subjected to groundwater level depth, soil layer shape structure and experiment.
Summary of the invention
The column soil layer specific yield analyzer that the purpose of this utility model is to provide a kind of to be measured conveniently, error is little.
To achieve these goals, the technical solution of the utility model is: a kind of column soil layer specific yield analyzer, and it comprises pressure measurement plate 2, pressure measurement plate 2 comprises fixed head and glass tube, at least be fixed with the glass tube 1 more than 2 or 2 on the fixed head, fixed head is provided with bench margin; It is characterized in that: be provided with the pot clay end negative pressure pressure measuring tie-in 6 more than 2 or 2 on the sample organic glass post 4 at least, at least be provided with the malleation pressure measuring tie-in 8 more than 2 or 2 on the sample organic glass post 4, one end of first flexible pipe 7 is connected with a pot clay end negative pressure pressure measuring tie-in 6 on the sample organic glass post 4, the other end of first flexible pipe 7 is connected with the lower end of a glass tube of pressure measurement plate 2, one end of second flexible pipe 9 is connected with a malleation pressure measuring tie-in 8 on the sample organic glass post 4, the other end of second flexible pipe 9 is connected with the lower end of another glass tube of pressure measurement plate 2, and the bottom of sample organic glass post 4 is provided with joint 12 at the bottom of the organic glass post; Water supply/drainage arrangement 22 is positioned on the jacking gear, the bottom of water supply/drainage arrangement 22 is provided with water supply/drainage joint 16, the spilling water that is provided with of water supply/drainage arrangement 22 exports 23, measuring cup 24 is positioned at the below of spilling water outlet 23, one end of the 3rd flexible pipe 18 is connected with water supply/drainage joint 16, and the other end of the 3rd flexible pipe 18 is connected with joint 12 at the bottom of the organic glass post.
Be respectively equipped with 4 pot clay end negative pressure pressure measuring tie-ins 6, malleation pressure measuring tie-in 8 on the described sample organic glass post 4,4 pot clay end negative pressure pressure measuring tie-ins 6 are located at interval at the middle and upper part of sample organic glass post 4 respectively, and 4 malleation pressure measuring tie-ins 8 are located at interval at the middle and lower part of sample organic glass post 4 respectively.
Establish a through hole in the malleation pressure measuring tie-in 8 and communicate with the cavity of sample organic glass post 4; Establish a through hole in the pot clay end negative pressure pressure measuring tie-in 6 and communicate, be provided with porous potter's clay post in the through hole of pot clay end negative pressure pressure measuring tie-in 6 with the cavity of sample organic glass post 4.
Described water supply/drainage arrangement 22 is an overflow tank.
Described jacking gear comprises rope 13, guide sleeve 14, crane 15, bracing frame 17, transfer roller 19, bar 20, pulley 21, the bottom of bracing frame 17 is provided with transfer roller 19, a bar 20 is fixed in the upper end of bracing frame 17, bar 20 is provided with pulley 21, one end of rope 13 is around tying up on the transfer roller 19, the other end of rope 13 passes pulley 21 fixedlys connected with crane 15, crane 15 is provided with water supply/drainage arrangement shelf, measuring cup plate, guide sleeve 14 is fixedlyed connected with crane 15 and is enclosed within on the bracing frame 17, and bracing frame 17 is provided with bench margin.
Sample organic glass post 4 is fixed on the support 11.
The utility model adopts the pot clay end negative pressure pressure measuring tie-in 6 that is provided with at least on the sample organic glass post 4 more than 2 or 2, a plurality of porous pot clay end pressure taps promptly are set, can measure soil layer and just be pressed onto the unsaturation suction head from full water, reach Continuous Observation, thereby understand the soil layer negative pressure variation easily and the influence of specific yield.Regulate water supply/drainage arrangement (overflow tank) thereby water level control sample organic glass post 4 depth to water by jacking gear, pass through overflow tank SEA LEVEL VARIATION speed control sample organic glass post 4 decline of water table speed in the experimentation; Thereby reach the soil layer specific yield of measuring under different buried depth and the different decline of water table speed.Adopt a plurality of pot clay end negative pressure pressure measuring tie-ins 6 and malleation pressure measuring tie-in 8, have the characteristics convenient, that error is little of measuring, adopt jacking gear to have the characteristics easily of measuring.
The utility model helps the student to understand the notion and the influence factor of specific yield better as instruments used for education, improves students'ability for practice by different conditions is set in experimentation; In scientific research, can further investigate many laminated soil feedwater mechanism etc.; Can measure the actual specific yield of the soil layer that meets field condition under different soil structure, different initial water level buried depth, the different decline of water table speed.In the soil layer feedwater characteristic test work applicable to relevant field with soil (as agricultural, soil environment, water resource).Instrument has the function than application prospects and continuation exploitation in a word.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among the figure: 1-glass tube, 2-pressure measurement plate, 3-vaporization prevention lid, 4-sample organic glass post, the tested soil body of 5-, 6-pot clay end negative pressure pressure measuring tie-in, 7-first flexible pipe, 8-malleation pressure measuring tie-in, 9-second flexible pipe, 10-drainpipe, 11-support, joint at the bottom of the 12-organic glass post, the 13-rope, 14-guide sleeve, 15-crane, 16-water supply/drainage joint, the 17-bracing frame, 18-the 3rd flexible pipe, 19-transfer roller, 20-bar, the 21-pulley, 22-water supply/drainage arrangement, the outlet of 23-spilling water, 24-measuring cup.
Embodiment
Embodiment 1:
As shown in Figure 1, a kind of column soil layer specific yield analyzer, it comprises pressure measurement plate 2, sample organic glass post 4, water supply/drainage arrangement 22, measuring cup 24, flexible pipe, jacking gear, pressure measurement plate 2 comprises fixed head and glass tube, at least be fixed with the glass tube 1 more than 2 or 2 on the fixed head, fixed head is provided with bench margin.Be respectively equipped with 4 pot clay end negative pressure pressure measuring tie-ins 6, malleation pressure measuring tie-in 8 on the sample organic glass post 4,4 pot clay end negative pressure pressure measuring tie-ins 6 are located at interval at the middle and upper part of sample organic glass post 4 respectively, and 4 malleation pressure measuring tie-ins 8 are located at interval at the middle and lower part of sample organic glass post 4 respectively; Establish a through hole in the malleation pressure measuring tie-in 8 and communicate with the cavity of sample organic glass post 4; Establish a through hole in the pot clay end negative pressure pressure measuring tie-in 6 and communicate, be provided with porous potter's clay post in the through hole of pot clay end negative pressure pressure measuring tie-in 6 with the cavity of sample organic glass post 4; One end of first flexible pipe 7 is connected with a pot clay end negative pressure pressure measuring tie-in 6 on the sample organic glass post 4, the other end of first flexible pipe 7 is connected with the lower end of a glass tube of pressure measurement plate 2, one end of second flexible pipe 9 is connected with a malleation pressure measuring tie-in 8 on the sample organic glass post 4, the other end of second flexible pipe 9 is connected with the lower end of another glass tube of pressure measurement plate 2, and the bottom of sample organic glass post 4 is provided with joint 12 at the bottom of the organic glass post.Sample organic glass post 4 is fixed on the support 11, and the bottom of sample organic glass post 4 is provided with drainpipe 10, and drainpipe 10 is provided with valve, and the upper end of sample organic glass post 4 is provided with vaporization prevention lid 3.Water supply/drainage arrangement 22 is an overflow tank, water supply/drainage arrangement 22 is positioned on the jacking gear, the bottom of water supply/drainage arrangement 22 is provided with water supply/drainage joint 16, the spilling water that is provided with of water supply/drainage arrangement 22 exports 23, measuring cup 24 is positioned at the below of spilling water outlet 23, one end of the 3rd flexible pipe 18 is connected with water supply/drainage joint 16, and the other end of the 3rd flexible pipe 18 is connected with joint 12 at the bottom of the organic glass post.During use, the tested soil body 5 is positioned at sample organic glass post 4.
Described jacking gear comprises rope 13, guide sleeve 14, crane 15, bracing frame 17, transfer roller 19, bar 20, pulley 21, the bottom of bracing frame 17 is provided with transfer roller 19, a bar 20 is fixed in the upper end of bracing frame 17, bar 20 is provided with pulley 21, one end of rope 13 is around tying up on the transfer roller 19, the other end of rope 13 passes pulley 21 fixedlys connected with crane 15, crane 15 is provided with water supply/drainage arrangement shelf, measuring cup plate, guide sleeve 14 is fixedlyed connected with crane 15 and is enclosed within on the bracing frame 17, and bracing frame 17 is provided with bench margin; Water supply/drainage arrangement 22 is shelved on water supply/drainage arrangement shelf, and measuring cup 24 is shelved on the measuring cup plate.The water yield that sample organic glass post 4 is discharged is specific yield with the ratio of sample organic glass post 4 volumes.
Survey the specific yield of homogeneous soil:
(1) dress sample: with the homogeneous fine sand (the tested soil body 5, particle diameter 0.25~0.45mm) layering are evenly packed in the sample organic glass post 4, make it closely knit evenly.
(2) full water: regulate the overflow tank water level by jacking gear and make it to open vaporization prevention lid 3, open water intaking valve water filling in sample organic glass post 4, allow sample organic glass post 4 slowly intake a little more than soil layer bottom in the sample organic glass post 4; Slowly heighten the overflow tank water level successively and make it always a little more than soil layer water level (reading by the pressure measurement plate) in the sample organic glass post 4, the full fully water of soil layer is closed water intaking valve in sample organic glass post 4.
(3) survey specific yield: keep overflow tank water level, piezometric tube (glass tube that links to each other with flexible pipe 9) height and negative pressure pipe (glass tube that links to each other with flexible pipe 7) height before the test at sustained height, by jacking gear overflow tank is transferred to a little less than sample organic glass post 4 water levels again, open the draining valve that spilling water on the overflow tank exports 23 places, allow the 4 free drainings of sample organic glass post, it is very little until water discharge behind the draining certain hour to allow overflow tank be fixed on this height, measures water discharge with measuring cup.The 5cm that successively overflow tank descended is stabilized in and allows sample organic glass post write down water discharge after 4 draining a period of times on this height, transfers to minimum point until water tank.Observe pressure measurement plate reading in this process simultaneously, can calculate the specific yield under the different buried depth.Test result such as following table:
Table 1 homogeneous soil specific yield test experiments account
Observation time Interval time (min) Overflow tank water level (m) Piezometric level (m) The negative pressure piezometric level Water-break amount (ml) Calculate specific yield
16:25 122.4 123 123
16:45 20 117.2 117.9 122.5 20.37 0.041
17:05 20 111.2 112 121.5 20.76 0.036
19:05 120 106 106.5 110.75 21.36 0.043
20:30 85 101 101.8 109 31.97 0.067
21:15 45 96 97 107.1 96.85 0.204
21:50 35 91 92 106.5 111.37 0.234
8:30 640 86 86.5 90.8 125.04 0.263
10:00 90 81 82 90.4 127.70 0.269
11:00 60 76 77.1 90 132.51 0.279
18:00 420 71 71.5 86.8 133.86 0.282
18:40 40 66 67.5 86.6 119.03 0.251
19:20 40 61 62 86.5 107.37 0.226
20:00 40 56 56.8 86.4 122.51 0.258
20:40 40 51 52 86.3 121.70 0.256
From table, can find out, when overflow tank water level higher (more than the 101m) (it is little to be equivalent to the initial water level buried depth), the specific yield value of measurement (0.041-0.067) less than normal.After depth to water is certain (this moment, the negative pressure piezometric level was basicly stable), specific yield is more stable in the experimental error scope, and the theoretical specific yield of this homogeneous soil of test result is 0.261; When the water-break time is longer (it is slow to be equivalent to the water level reduction of speed) in addition, specific yield is bigger than normal.These conclusions and actual conditions are coincide, and illustrate that this instrument can measure the true specific yield of column soil layer, and can study the influence to specific yield of depth to water, decline of water table speed.
Embodiment 2:
A kind of structure of column soil layer specific yield analyzer is identical with embodiment 1.
Survey the specific yield of stratiform heterogeneous body soil layer:
With pack into the soil sample of different-grain diameter of layering in the sample organic glass post 4, the fine sand (0.25~0.45mm) of the following 47.7cm of dress earlier, (0.60~0.90mm), (0.25~0.45mm) forms stratiform heterogeneous soil layer to the fine sand of the 50cm that packs at last to reinstall the coarse sand of 24cm.Operate according to embodiment 1 step again, can calculate the specific yield of the inhomogeneous soil of stratiform. test result such as table 2.
Table 2 stratiform heterogeneous body soil layer specific yield test experiments account
Observation time Interval time (min) Overflow tank water level (m) Piezometric level (m) The negative pressure piezometric level Water-break amount (ml) Calculate specific yield
11:45 125.3 126.6 126.6
12:45 60 120.3 121.5 124.6 16.66 0.035
15:10 145 115.3 116.6 120 15.54 0.033
16:25 75 110.3 111.5 117.5 21.43 0.045
17:05 40 105.3 106.5 115.8 32.85 0.069
17:45 40 100.3 101.6 114.1 113.90 0.240
20:10 145 95.3 96.5 109.5 115.44 0.243
20:50 40 90.3 91.5 108.4 132.13 0.278
21:50 60 85.3 86.5 106.9 147.95 0.311
22:30 40 80.3 81.5 106 128.23 0.270
9:00 630 76.3 77.5 97.2 143.98 0.379
10:30 90 71.3 72.4 96.7 132.37 0.279
11:15 45 66.3 67.5 96.4 133.56 0.281
14:00 165 61.3 62.4 95.2 116.04 0.244
15:00 60 56.3 57.4 95 205.06 0.432
16:05 65 51.1 52.2 94.6 160.37 0.325
17:00 55 46.1 47.2 94.4 151.56 0.319
The specific yield that obtains the upper strata fine sand according to experimental data is 0.268, and the specific yield of bottom coarse sand is 0.359.

Claims (5)

1. column soil layer specific yield analyzer, it comprises pressure measurement plate (2), and pressure measurement plate (2) comprises fixed head and glass tube, is fixed with the glass tube (1) more than 2 or 2 on the fixed head at least, and fixed head is provided with bench margin; It is characterized in that: be provided with the pot clay end negative pressure pressure measuring tie-in (6) more than 2 or 2 on the sample organic glass post (4) at least, at least be provided with the malleation pressure measuring tie-in (8) more than 2 or 2 on the sample organic glass post (4), one end of first flexible pipe (7) is connected with a pot clay end negative pressure pressure measuring tie-in (6) on the sample organic glass post (4), the other end of first flexible pipe (7) is connected with the lower end of a glass tube of pressure measurement plate (2), one end of second flexible pipe (9) is connected with a malleation pressure measuring tie-in (8) on the sample organic glass post (4), the other end of second flexible pipe (9) is connected with the lower end of another glass tube of pressure measurement plate (2), and the bottom of sample organic glass post (4) is provided with joint (12) at the bottom of the organic glass post; Water supply/drainage arrangement (22) is positioned on the jacking gear, the bottom of water supply/drainage arrangement (22) is provided with water supply/drainage joint (16), the spilling water that is provided with of water supply/drainage arrangement (22) exports (23), measuring cup (24) is positioned at the below of spilling water outlet (23), one end of the 3rd flexible pipe (18) is connected with water supply/drainage joint (16), and the other end of the 3rd flexible pipe (18) is connected with joint (12) at the bottom of the organic glass post.
2. a kind of column soil layer specific yield analyzer according to claim 1, it is characterized in that: be respectively equipped with 4 pot clay end negative pressure pressure measuring tie-ins (6), malleation pressure measuring tie-in (8) on the described sample organic glass post (4), 4 pot clay end negative pressure pressure measuring tie-ins (6) are located at interval at the middle and upper part of sample organic glass post (4) respectively, and 4 malleation pressure measuring tie-ins (8) are located at interval at the middle and lower part of sample organic glass post (4) respectively.
3. a kind of column soil layer specific yield analyzer according to claim 1, it is characterized in that: described water supply/drainage arrangement (22) is an overflow tank.
4. a kind of column soil layer specific yield analyzer according to claim 1, it is characterized in that: described jacking gear comprises rope (13), guide sleeve (14), crane (15), bracing frame (17), transfer roller (19), bar (20), pulley (21), the bottom of bracing frame (17) is provided with transfer roller (19), a bar (20) is fixed in the upper end of bracing frame (17), bar (20) is provided with pulley (21), one end of rope (13) is around tying up on the transfer roller (19), the other end of rope (13) passes pulley (21) fixedlys connected with crane (15), crane (15) is provided with water supply/drainage arrangement shelf, the measuring cup plate, guide sleeve (14) is fixedlyed connected with crane (15) and is enclosed within on the bracing frame (17), and bracing frame (17) is provided with bench margin.
5. a kind of column soil layer specific yield analyzer according to claim 1, it is characterized in that: sample organic glass post (4) is fixed on the support (11).
CN 200620096893 2006-05-26 2006-05-26 Column soil layer water supply degree detector Expired - Fee Related CN2901309Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620096893 CN2901309Y (en) 2006-05-26 2006-05-26 Column soil layer water supply degree detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620096893 CN2901309Y (en) 2006-05-26 2006-05-26 Column soil layer water supply degree detector

Publications (1)

Publication Number Publication Date
CN2901309Y true CN2901309Y (en) 2007-05-16

Family

ID=38085473

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620096893 Expired - Fee Related CN2901309Y (en) 2006-05-26 2006-05-26 Column soil layer water supply degree detector

Country Status (1)

Country Link
CN (1) CN2901309Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680374A (en) * 2012-05-25 2012-09-19 中国地质大学(武汉) Test device for determining non-saturated soil osmotic parameter
CN105651677A (en) * 2016-03-08 2016-06-08 中国地质大学(武汉) Geotechnical parameter and property tester capable of simultaneously testing specific yield and osmotic coefficient
CN105806761A (en) * 2016-03-08 2016-07-27 中国地质大学(武汉) Simultaneous determination method and determination device of capillary-rise height and specific water yield
CN108709953A (en) * 2018-04-13 2018-10-26 北京师范大学 A kind of simulator of belt of phreatic fluctuation
CN110208497A (en) * 2019-07-17 2019-09-06 吉林大学 A kind of portable soil specific yield tester and test method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680374A (en) * 2012-05-25 2012-09-19 中国地质大学(武汉) Test device for determining non-saturated soil osmotic parameter
CN102680374B (en) * 2012-05-25 2013-12-11 中国地质大学(武汉) Test device for determining non-saturated soil osmotic parameter
CN105651677A (en) * 2016-03-08 2016-06-08 中国地质大学(武汉) Geotechnical parameter and property tester capable of simultaneously testing specific yield and osmotic coefficient
CN105806761A (en) * 2016-03-08 2016-07-27 中国地质大学(武汉) Simultaneous determination method and determination device of capillary-rise height and specific water yield
CN105806761B (en) * 2016-03-08 2018-07-06 中国地质大学(武汉) A kind of capillary rise height and specific yield while assay method and measurement device
CN105651677B (en) * 2016-03-08 2019-01-01 中国地质大学(武汉) A kind of Geotechnical Parameter property analyzer that can measure specific yield and infiltration coefficient simultaneously
CN108709953A (en) * 2018-04-13 2018-10-26 北京师范大学 A kind of simulator of belt of phreatic fluctuation
CN110208497A (en) * 2019-07-17 2019-09-06 吉林大学 A kind of portable soil specific yield tester and test method

Similar Documents

Publication Publication Date Title
CN101739882B (en) Confined water and phreatic water compound simulation experiment device
CN2901309Y (en) Column soil layer water supply degree detector
CN202075201U (en) Groundwater seepage simulation test device
CN201130143Y (en) Porous medium material permeability coefficient determinator
CN101865810B (en) Test method for determining unsaturated soil water characteristic parameters
CN101344515B (en) Permeability coefficient determinator
CN103424341A (en) Simulator for transport of soil pollutant
CN201348601Y (en) Pressure permeameter
CN203101019U (en) Testing device for simulating dynamic change of shallow underground flow from mountain front to plain area
CN202018415U (en) Aquifer parameter testing device under simulated water pumping conditions
CN201926607U (en) Seepage deformation tester
CN105651677A (en) Geotechnical parameter and property tester capable of simultaneously testing specific yield and osmotic coefficient
CN103604734B (en) The unsaturated soil rain infiltration simulation system that raininess is controlled
CN102809642A (en) Method for determining hydrogeological parameters of aquitard
CN107389896B (en) Top layer bed material pollutant adsorption/desorption characteristic measuring device and its application method
CN102169082B (en) Seepage deformation tester
CN203630014U (en) Rain-intensity-controllable unsaturated soil rainwater infiltration simulation system
CN203772699U (en) Three-dimensional penetration siltation simulated test device of dam foundation soil body
CN205404360U (en) But ground parameter nature apparatus of simultaneous determination feedwater degree and osmotic coefficient
CN106053762A (en) Lakeside embankment seepage and deformation characteristics testing apparatus and method
CN204267017U (en) A kind of oil-water separation metering device
CN201561921U (en) Varying water head pressure permeameter
CN101865811A (en) Method for measuring three-dimensional stress loaded soil permeability parameter
CN205138969U (en) Test device of semi -automatization soil capillary rising degree on water and speed
CN202281773U (en) Unsaturation water supply device for simulating underground water

Legal Events

Date Code Title Description
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: 20070516