CN109781564A - A kind of cohesive soil starting washout test equipment - Google Patents
A kind of cohesive soil starting washout test equipment Download PDFInfo
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- CN109781564A CN109781564A CN201910136355.6A CN201910136355A CN109781564A CN 109781564 A CN109781564 A CN 109781564A CN 201910136355 A CN201910136355 A CN 201910136355A CN 109781564 A CN109781564 A CN 109781564A
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- flange
- sink
- organic transparent
- transparent glass
- cohesive soil
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Abstract
The present invention relates to a kind of cohesive soils to start washout test equipment, belongs to field of measuring technique, IPC code G01N3/00.Including sticky soil sample preparation facilities, cohesive soil flushing device, sink, water tank connecting device and filming apparatus, the filming apparatus is arranged on the sink top, the lower part of the sink is arranged in the water tank connecting device, and the cohesive soil flushing device is connect by the water tank connecting device with sink.Testing equipment of the invention can be accelerated to prepare the sticky soil sample of various moisture content, the starting scouring simulation test of cohesive soil is carried out well, clearly shoot cohesive soil washes away situation, and carry out accurate DATA REASONING, it also avoids and washes away sink air inlet test accuracy is impacted, it is high-efficient, it is easy to operate.
Description
Technical field
The present invention relates to a kind of cohesive soils to start washout test equipment, belongs to field of measuring technique, IPC code is
G01N3/00。
Background technique
The Yellow River belongs to heavily silt-carrying river, and often there are many clay layers on riverbank, due to change in water and sand, water Sha Laiyuan in river
Region is different and thickness sedimentation process is different, causes earth formation different, different soil structures is caused to form different rivers
Bank, and different soil structures riverbank leads to phenomena such as lopsided river regime and channel-bank slumping occur to river erosion resistibility difference, and
The river regime that lopsided river regime and channel-bank slumping etc. will cause Lower Reaches of The Yellow River again is unstable, causes a series of problems.Study riverbank cohesive soil
Impact resilience for Yellow River harnessing practice have great theory significance and practical value.
Cohesive soil is a kind of fine grained soil, and grain diameter is superfine, intergranular interaction and its complexity, its physics is special
Property with its water content have close relationship.Soil generally by plasticity index greater than 10 is known as cohesive soil；In hydrostatic or slow stream
Deposition, the cohesive soil through biological chemistry action formation, natural moisture content greater than liquid limit, natural void ratio greater than 1.5 in water environment
Referred to as mud.
It is started in washout test in cohesive soil, needs to get out sticky soil sample in advance, this allows for the preparation of sticky soil sample
As key.The production method of viscosity soil sample is to allow cohesive soil and water after mixing evenly in bucket it to carry out nature at present
Sedimentation, this siltation deposition process need the long period, test also can only sticky soil sample deposit reach meet the requirements when into
Row is not able to satisfy test with the requirement done with soil sampling, causes test process to be delayed to the long period, interfere grinding for researcher
Study carefully progress.
Cohesive soil starts in washout test, and need to observe in sink sticky soil sample washes away situation, and measures a series of examinations
Data are tested, this placement for allowing for sticky soil sample becomes key.In previous test, often due to placing the device of sticky soil sample
It connect bad and leak or cohesive soil with sink and washes away inoperative, or cohesive soil cannot be observed in time and start phenomenon, cause to test
Accuracy of observation is inaccurate or test cannot be gone on smoothly.
Summary of the invention
The present invention for cohesive soil start sticky soil sample preparation time in washout test it is long, it is bad place, to influence test whole
The problem of body simulation precision and progress, invents a kind of cohesive soil starting washout test equipment, washes away examination to meet cohesive soil starting
The precision and schedule requirement tested.Technical solution of the invention is as follows:
A kind of cohesive soil starts washout test equipment, including sticky soil sample preparation facilities, cohesive soil flushing device, sink,
Water tank connecting device and filming apparatus, the filming apparatus setting exist in the sink top, the water tank connecting device setting
The lower part of the sink, the cohesive soil flushing device are connect by the water tank connecting device with sink.
It is described viscosity soil sample preparation facilities be made of organic transparent glass case and vaccum-pumping equipment, the vaccum-pumping equipment by
Vacuum barrel and vacuum pump group at；The vacuum barrel is described true by the organic transparent glass case connection of a transparent rubber Guan Yiyu
Empty barrel passes through the connection of vacuum pump described in a transparent rubber Guan Eryu；The vacuum barrel is equipped with pressure gauge；It is described organic transparent
The bottom of glass box is covered with one layer of organic transparency glass plate, is covered with one layer of permeable geotextiles on organic transparent porous disc,
It is the sticky soil paste being stirred in the upper surface of described permeable geotextiles, it is thin to be covered with one layer of plastics on the sticky soil paste surface
Film；
The cohesive soil flushing device includes top tray, lower tray, galvanized screw, organic transparent glass flange, cohesive soil
Sample, steel ball, organic transparent glass tube, sealed steel pipe, screw rod and handle.
Cylindrical sticky soil sample is placed in the top tray, and the diameter of the top tray and lower tray is and cohesive soil
Sample diameter is consistent, and the steel ball is embedded in 1 bottom of top tray, is connected top tray with lower tray by steel ball.It is described organic
Bright glass flange includes upper flange and lower flange, and organic transparent glass tube is arranged between the upper flange and lower flange.
The sealed steel pipe upper end is equipped with steel flange, the steel flange and organic transparent glass flange
Lower flange is connected and fixed by galvanized screw.Be equipped among the bottom end of the sealed steel pipe and the steel flange with it is described
The through-hole that the outer diameter of screw rod matches.The lower end of the screw rod is arranged in the handle, and the screw rod sequentially passes through from bottom to up
The through-hole of the sealed steel pipe bottom end, the through-hole of the steel flange and organic transparent glass tube, the screw rod upper end
It is fixedly connected with the lower tray.Internal thread nut is equipped in the through hole of the sealed steel pipe bottom end.In the steel flange
The upper and lower part of the through-hole be respectively provided with a circular groove, a skeleton oil is respectively provided in two circular grooves
Envelope.
The water tank connecting device include the organic transparent glass tube of bottom of gullet and be located at the bottom of gullet it is organic transparent
The sink connecting flange of glass tube bottom end, the bottom of the sink are equipped with matched with the organic transparent glass tube of the bottom of gullet
Opening.The organic transparent glass tube of bottom of gullet is fixed with the opening position of the sink and the sink connecting flange respectively
Connection.The upper flange of the sink connecting flange and organic transparent glass flange is fixedly connected on one by galvanized bolt
It rises, rubber pad is equipped between the sink connecting flange and the upper flange of organic transparent glass flange.
The filming apparatus includes lighting source and video camera, and the lighting source is arranged on the sink inner sidewall,
The video camera is fixed on the bracket of sink by parallel angle steel.
Further, the material of the top tray, lower tray, sealed steel pipe and handle is stainless steel.
The present invention have the advantages that following significant effect and.
1, the steel ball of transmission effect has been set between lower tray and lower tray, when screw rod rotates jacking viscosity soil sample, under
Pallet rotation, top tray not can rotate, and the sticky soil sample placed thereon will not turn in lifting process with the rotation of screw rod
It is dynamic, it keeps sticky soil sample upstream face position constant always, tallies with the actual situation.
2, two outside framework oil seals one on the other are set in the steel flange on sealed steel pipe top, substantially increase leakproofness
Can, it avoids and washes away sink air inlet test accuracy is impacted.
3, organic transparent glass flange is set as upper and lower double form of flanges, and organic transparent glass is arranged between upper and lower flange
Pipe is connect as transition connecting structure, using upper flange with water tank connecting device, and during the test or replaces sticky soil sample
When dismantle, it is easy to operate；It is fixedly connected using lower flange and steel flange with sealed steel pipe, during the test or replacement is viscous
It is no longer dismantled when property soil sample, further ensures the leakproofness of entire experimental rig.
4, the present invention uses transparent organic glass case and lucite tube, can preferably observe the preparation of internal viscosity soil sample
With wash away situation.
5, vacuum barrel is used in combination with vacuum pump, can according to test demand, it is artificial control sticky soil sample deposition consolidation when
Between and degree, obtain the sticky soil sample of different water cut.
6, each component part of the invention is organically combined, and examination is washed away in the starting that can carry out cohesive soil well
It tests, clearly shoot cohesive soil washes away situation, and carries out accurate DATA REASONING, it is thus also avoided that washes away sink air inlet to test
Precision impacts, easy to operate.
Detailed description of the invention
Fig. 1 is cohesive soil flushing device structure front view of the invention.
Fig. 2 is cohesive soil flushing device longitudinal sectional drawing of the invention.
Fig. 3 is sink and filming apparatus schematic diagram of the invention.
Fig. 4 is hydraulic model overall structure front view of the invention.
Fig. 5 is the sticky soil sample preparation facilities structural schematic diagram that the present invention uses.
Fig. 6 is organic transparency glass plate top view that the present invention uses.
Wherein, 1 is top tray, and 2 be lower tray, and 3 be galvanized screw, and 4 be organic transparent glass flange, and 5 be sticky soil sample,
6 be steel ball, and 7 be organic transparent glass tube, and 8 be sealed steel pipe, and 9 be screw rod, and 10 be handle, and 11 be sink connecting flange, and 12 are
Lighting source, 13 be video camera, and 14 be sink, and 15 be organic transparency glass plate, and 16 be parallel angle steel, and 17 is organic for bottom of gullet
Transparent glass tube, 18 be rubber pad, and 19 be outside framework oil seal, and 20 be internal thread nut, and 21 be steel flange, and 31 be organic transparent glass
Glass plate, 32 be permeable geotextiles, and 33 be sticky soil paste, and 34 be transparent plastic film, and 35 be stainless-steel vacuum bucket, and 36 be pressure
Table, 37 be vacuum pump, and 38 be aperture, and 39 be transparent rubber pipe one, and 40 be transparent rubber pipe two.
Specific embodiment
The present invention is described in detail below in conjunction with attached drawing.
A kind of cohesive soil starting washout test equipment, including sticky soil sample preparation facilities, cohesive soil flushing device, sink
14, water tank connecting device and filming apparatus, the filming apparatus are arranged on 14 top of sink, and the water tank connecting device is set
It sets in the lower part of the sink 14, the cohesive soil flushing device is connect by the water tank connecting device with sink 14.
As seen in figs. 5-6, the sticky soil sample preparation facilities is made of organic transparent glass case and vaccum-pumping equipment, described
Organic transparent glass case bottom centre is equipped with aperture 38, and the vaccum-pumping equipment is made of vacuum barrel 35 and vacuum pump 37, transparent
One end of rubber tube 1 is connected to the vacuum barrel 35, and the other end is connected by the aperture 38 and organic transparent glass case
Logical, the vacuum barrel 35 is connected to by transparent rubber pipe 2 40 with the vacuum pump 37；The vacuum barrel 35 is equipped with pressure gauge
36。
Length, width and height inside organic transparent glass case are described with a thickness of 1cm having a size of 40cm × 20cm × 20cm
The bottom of organic transparent glass case is covered with one layer of organic transparency glass plate 31, the size of organic transparency glass plate 31 be 40cm ×
20cm, with a thickness of 1cm, be evenly equipped on organic transparency glass plate 31 aperture be 5mm aperture, the hole of adjacent apertures in the heart away from
For 2cm.One layer of permeable geotextiles 32 are covered on organic transparent porous disc 31, are in the upper surface of described permeable geotextiles 32
The sticky soil paste 33 being stirred is covered with layer of plastic film 34 on 33 surface of the sticky soil paste, forms vacuum state, just
It is deposited in acceleration.Starting vacuum pump 37 can carry out vacuum and draw water, and can control the time of cohesive soil deposition consolidation by pressure gauge 36
And degree, the sticky soil sample 5 of different water cut is obtained, washout test is started for cohesive soil and prepares.
As illustrated in fig. 1 and 2, the cohesive soil flushing device is used to place sticky soil sample 5 and adjusts the height of sticky soil sample 5
Degree, including top tray 1, lower tray 2, galvanized screw 3, organic transparent glass flange 4, sticky soil sample 5, steel ball 6, organic transparent glass
Glass pipe 7, sealed steel pipe 8, screw rod 9 and handle 10, the top tray 1, lower tray 2, the material of sealed steel pipe 8 and handle 10 are
Stainless steel.
Cylindrical sticky soil sample 5 is placed in the top tray 1, and the top tray 1,2 thickness of lower tray are 1cm,
Its diameter is consistent with sticky 5 diameter of soil sample, and steel ball 6 is embedded in 1 bottom of top tray, by steel ball 6 by top tray 1 and lower tray
2 connections.Organic transparent glass flange 4 includes upper flange and lower flange, and organic transparent glass tube 7 is arranged on described
Between flange and lower flange, organic transparent glass tube 7 the thickness 1cm, high 5cm, internal diameter 8cm.It is provided between upper and lower flange
Machine transparent glass tube 7 is used as transition connecting structure, is connect using upper flange with water tank connecting device, and during the test or more
Disassembly when changing sticky soil sample 5, it is easy to operate.
8 upper end of sealed steel pipe is equipped with steel flange 21, the bottom end of the sealed steel pipe 8 and the steel flange
It is equipped with the through-hole to match with the outer diameter of the screw rod 9 among 21, is passed through for the screw rod 9.21 He of steel flange
The lower flange of organic transparent glass flange 4 is connected and fixed by galvanized screw 3, and during the test and replacement cohesive soil
It is no longer dismantled when sample 5.The lower end of the screw rod 9 is arranged in the handle 10, and the screw rod 9 sequentially passes through described close from bottom to up
Seal the through-hole and organic transparent glass tube 7 of the through-hole of 8 bottom end of steel pipe, the steel flange 21,9 upper end of screw rod with
The lower tray 2 is fixedly connected.Internal thread nut 20 is equipped in the through hole of 8 bottom end of sealed steel pipe.In the stainless steel method
The upper and lower part of the through-hole of orchid 21 is respectively provided with a circular groove, and a skeleton is respectively arranged in two circular grooves
Oil sealing 19, the water that outside framework oil seal 19 can be effectively prevented during test in sink enter sealed steel pipe 8, and the present invention is in order to improve
Sealing effect, using two outside framework oil seals 19 one on the other, during the whole test process, without generating any bubble in sink,
It proves that moisture seal has been effectively ensured using the arrangement of two outside framework oil seals 19 one on the other.
The purpose of the sealed steel pipe 8 is set, first is that guaranteeing the leakproofness of device, air is prevented to enter in sink to test
As a result it impacts, second is that two through-holes up and down in sealed steel pipe 8 can guarantee that screw rod 9 does not occur partially in upper and lower operation
Tiltedly, third is that providing stable fixed point when the cohesive soil flushing device to be fixed in support device.
Rotate stainless steel handle 10 and rotated upwards with screw rod 9, lower tray 2 with screw rod 9 together upward rotary motion, by
It being acted in the transmitting of steel ball 6, top tray 1 and its sticky soil sample 5 above move upwards simultaneously, but viscosity soil sample 5 will not rotate,
It can keep good static soil sample state.
As shown in Figure 3-4, the water tank connecting device include the organic transparent glass tube 17 of bottom of gullet and be located at the water
The bottom of the sink connecting flange 11 of organic 17 bottom end of transparent glass tube of trench bottom, the sink 14 is equipped with and the bottom of gullet
The matched opening of organic transparent glass tube 17.The organic transparent glass tube 17 of the bottom of gullet opening with the sink 14 respectively
Position and the sink connecting flange 11 are fixedly connected, and the preferred integral adhesive of the mode being fixedly connected is together.Carry out cohesive soil
When playing scouring simulation test, the organic transparent glass tube 17 of bottom of gullet is set in the outside of the sticky soil sample 5, described
Sink connecting flange 11 and the upper flange of organic transparent glass flange 4 are fixed together by galvanized bolt 3, described
Rubber pad is equipped between sink connecting flange 11 and the upper flange of organic transparent glass flange 4.It is needing the viscosity
When native flushing device is separated with the sink 14, the plating being fixed between the sink connecting flange 11 and the upper flange is removed
Zinc bolt 3 dismounts very convenient；Moreover, the lower flange of organic transparent glass flange 4 and the steel flange 21
Be fixedly connected and no longer dismantle, to avoid the sealing destroyed between sealed steel pipe 8 and screw rod 9.
The filming apparatus includes lighting source 12 and video camera 13, and the lighting source 12 is arranged in the sink 14
On side wall, the lighting source 12 can make shooting area relatively sharp using light sources such as LED, fluorescent tubes.It is described facing
The video camera 13 is placed above the sink 14 of sticky soil sample 5, a hole is dug on organic transparency glass plate 15, the size in hole is just
The camera lens of video camera 13 can be put in, organic transparency glass plate 15 is fixed with parallel angle steel 16, apart from 14 top of sink
10cm, and can be moved up and down according to the coverage of video camera 13, for moving range within 10cm, parallel 16 other end of angle steel is solid
It is scheduled on the bracket of sink 14, the influence shaken when water reception tank 14 does not discharge water.
When carrying out cohesive soil starting scouring simulation test, the cohesive soil flushing device of Fig. 1 and 2 is utilized, handle is twisted
10 make top tray 1 drop to the height that can place sticky soil sample 5, take out the sticky soil sample 5 prepared with cutting ring and are placed into
1 on pallet；The upper flange of the sink connecting flange 11 and organic transparent glass flange 4 is fixed by galvanized bolt 3
It links together, tightens galvanized bolt 3 with spanner and guarantee that air-tightness is good；Handle 10 is twisted, the sticky rising of soil sample 5 and sink are made
The position that 14 bottoms flush, which starts to discharge water, is tested；Waterflow stabilization is waited, timing starts and opens the video camera 13 set up
It is shot.Simulation is washed away in the technical solution provided using present embodiment, the starting that can carry out cohesive soil well
Test, and each position is water-tight during the test, and clearly observes that cohesive soil washes away all processes of starting.
Claims (3)
1. a kind of cohesive soil starts washout test equipment, which is characterized in that wash away dress including sticky soil sample preparation facilities, cohesive soil
It sets, sink (14), water tank connecting device and filming apparatus, the filming apparatus are arranged in the sink (14) top, the water
The setting of slot attachment device passes through the water tank connecting device and water in the lower part of the sink (14), the cohesive soil flushing device
Slot (14) connection；
The viscosity soil sample preparation facilities is made of organic transparent glass case and vaccum-pumping equipment, and the vaccum-pumping equipment is by vacuum
Bucket (35) and vacuum pump (37) composition；The vacuum barrel (35) passes through a transparent rubber pipe one (39) and organic transparent glass case
Connection, the vacuum barrel (35) are connected to by a transparent rubber pipe two (40) with the vacuum pump (37)；The vacuum barrel
(35) pressure gauge (36) are equipped with；The bottom of organic transparent glass case is covered with one layer of organic transparency glass plate (31), in institute
It states and is covered with one layer of permeable geotextiles (32) on organic transparent porous disc (31), be to have stirred in the upper surface of described permeable geotextiles (32)
The sticky soil paste (33) mixed is covered with layer of plastic film (34) on described sticky soil paste (33) surface；
The cohesive soil flushing device includes top tray (1), lower tray (2), galvanized screw (3), organic transparent glass flange
(4), sticky soil sample (5), steel ball (6), organic transparent glass tube (7), sealed steel pipe (8), screw rod (9) and handle (10)；
Cylindrical sticky soil sample (5) is placed on the top tray (1), and the diameter of the top tray (1) and lower tray (2) is equal
Consistent with sticky soil sample (5) diameter, the steel ball (6) is embedded in top tray (1) bottom, by steel ball (6) by top tray (1) and
Lower tray (2) connection；Organic transparent glass flange (4) includes upper flange and lower flange, organic transparent glass tube (7)
It is arranged between the upper flange and lower flange；
Sealed steel pipe (8) upper end is equipped with steel flange (21), the steel flange (21) and organic transparent glass
The lower flange of glass flange (4) is connected and fixed by galvanized screw (3)；The bottom end of the sealed steel pipe (8) and the stainless steel method
The through-hole to match with the outer diameter of the screw rod (9) is equipped among blue (21)；The handle (10) is arranged in the screw rod (9)
Lower end, the screw rod (9) sequentially passes through the through-hole of the sealed steel pipe (8) bottom end, the steel flange from bottom to up
(21) through-hole and organic transparent glass tube (7), screw rod (9) upper end are fixedly connected with the lower tray (2)；Institute
The through hole for stating sealed steel pipe (8) bottom end is equipped with internal thread nut (20)；The steel flange (21) the through-hole it is upper
Portion and lower part are respectively provided with a circular groove, and an outside framework oil seal (19) is respectively provided in two circular grooves；
The water tank connecting device include the organic transparent glass tube of bottom of gullet (17) and be located at the bottom of gullet it is organic transparent
The sink connecting flange (11) of glass tube (17) bottom end, the bottom of the sink (14) are equipped with organic transparent with the bottom of gullet
Glass tube (17) matched opening；The organic transparent glass tube of bottom of gullet (17) opening portion with the sink (14) respectively
Position and the sink connecting flange (11) are fixedly connected；The sink connecting flange (11) and organic transparent glass flange
(4) upper flange is fixed together by galvanized bolt 3, the sink connecting flange (11) and organic transparent glass
Rubber pad (18) are equipped between the upper flange of flange (4)；
The filming apparatus includes lighting source (12) and video camera (13), and the lighting source (12) is arranged in the sink
(14) on inner sidewall, the video camera (13) is fixed on the bracket of sink (14) by parallel angle steel (16).
2. cohesive soil according to claim 1 starts washout test equipment, which is characterized in that the top tray (1), subiculum
The material of disk (2), sealed steel pipe (8) and handle (10) is stainless steel.
3. cohesive soil according to claim 1 starts washout test equipment, which is characterized in that the filming apparatus includes shining
Mingguang City source (12) and video camera (13), the lighting source (12) are arranged on the sink (14) inner sidewall, the video camera
(13) it is fixed on the bracket of sink (14) by parallel angle steel (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910136355.6A CN109781564B (en) | 2019-02-25 | 2019-02-25 | Cohesive soil starting scouring test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910136355.6A CN109781564B (en) | 2019-02-25 | 2019-02-25 | Cohesive soil starting scouring test equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109781564A true CN109781564A (en) | 2019-05-21 |
| CN109781564B CN109781564B (en) | 2023-06-02 |
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ID=66486370
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910136355.6A Active CN109781564B (en) | 2019-02-25 | 2019-02-25 | Cohesive soil starting scouring test equipment |
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| WO2004022898A1 (en) * | 2002-09-05 | 2004-03-18 | Boe Technology Group Co.,Ltd | Evacuated glass panel and method of fixing support means, disposed therein |
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| CN104790338A (en) * | 2015-03-12 | 2015-07-22 | 黄河水利委员会黄河水利科学研究院 | Contact scour hydraulic model |
| EP3067685A1 (en) * | 2015-03-10 | 2016-09-14 | Technische Universität Kaiserslautern | Device for taking images of a measuring volume in a container |
| WO2018103202A1 (en) * | 2016-12-09 | 2018-06-14 | 哈尔滨工业大学深圳研究生院 | Device and method for measuring hydraulic characteristics of cracked soil under uneven subsidence |
| CN108982271A (en) * | 2018-07-20 | 2018-12-11 | 河海大学 | A kind of experimental rig and test method for simulating soil body contact scour development process |
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2019
- 2019-02-25 CN CN201910136355.6A patent/CN109781564B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004022898A1 (en) * | 2002-09-05 | 2004-03-18 | Boe Technology Group Co.,Ltd | Evacuated glass panel and method of fixing support means, disposed therein |
| EP3067685A1 (en) * | 2015-03-10 | 2016-09-14 | Technische Universität Kaiserslautern | Device for taking images of a measuring volume in a container |
| CN204405502U (en) * | 2015-03-12 | 2015-06-17 | 黄河水利委员会黄河水利科学研究院 | A kind of native stone joint portion contact scour test unit |
| CN104790338A (en) * | 2015-03-12 | 2015-07-22 | 黄河水利委员会黄河水利科学研究院 | Contact scour hydraulic model |
| WO2018103202A1 (en) * | 2016-12-09 | 2018-06-14 | 哈尔滨工业大学深圳研究生院 | Device and method for measuring hydraulic characteristics of cracked soil under uneven subsidence |
| CN108982271A (en) * | 2018-07-20 | 2018-12-11 | 河海大学 | A kind of experimental rig and test method for simulating soil body contact scour development process |
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