CN109813621A - A kind of basement rock weak structural face waterpower scour simulation device and its test method - Google Patents
A kind of basement rock weak structural face waterpower scour simulation device and its test method Download PDFInfo
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- CN109813621A CN109813621A CN201910179848.8A CN201910179848A CN109813621A CN 109813621 A CN109813621 A CN 109813621A CN 201910179848 A CN201910179848 A CN 201910179848A CN 109813621 A CN109813621 A CN 109813621A
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- chamber
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- water inlet
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- basement rock
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- 239000011435 rock Substances 0.000 title claims abstract description 31
- 238000004088 simulation Methods 0.000 title claims abstract description 22
- 238000010998 test method Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 241000283080 Proboscidea <mammal> Species 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 28
- 239000000700 radioactive tracer Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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- 238000004062 sedimentation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The invention discloses a kind of basement rock weak structural face waterpower scour simulation devices, including chamber and liftable high water tank, the both ends of chamber are provided with chamber water inlet and chamber water outlet, sillar group is provided in the middle part of chamber, sillar group is arranged after cutting is polished into strip in sphere of movements for the elephants shape by four plots of weak sillars, it is located at sillar group two sides in chamber and is provided with rectifying component, chamber is located at sillar group and the bottom of rectifying component is provided with pressure-measuring pipe, high water tank is connected by water inlet pipe with chamber, water inlet pipe one end is connect with high water tank bottom, the other end is detachably connected with chamber water inlet；The basement rock weak structural face waterpower scour simulation device can verify that basement rock weak structural face can form leakage passage under proper condition, and structure novel is easy to operate.
Description
Technical field
The present invention relates to a kind of basement rock weak structural face waterpower scour simulation device and its test methods.
Background technique
Dam leakage hidden danger directly affects the safety of dykes and dams.It is seeped for being formed to concentrate to dykes and dams basement rock weakness structure in the past
The deficiency of channel research is leaked, urgent need invents a kind of basement rock weak structural face waterpower scour simulation device, to solve the prior art
It is insufficient.
Summary of the invention
The purpose of the present invention is to solve defects in the prior art, provide a kind of basement rock weak structural face sluicing
Experimental rig and its test method, it may be verified that basement rock weak structural face can form leakage passage under proper condition, structure novel,
It is easy to operate.
To achieve the above object, technical scheme is as follows:
A kind of basement rock weak structural face waterpower scour simulation device, including chamber and liftable high water tank, it is described
The both ends of chamber are provided with chamber water inlet and chamber water outlet, are provided with sillar group in the middle part of the chamber, described
Sillar group is arranged after cutting is polished into strip in sphere of movements for the elephants shape by four plots of weak sillars, and sillar group two sides are located in chamber
It is provided with rectifying component, chamber is located at sillar group and the bottom of rectifying component is provided with pressure-measuring pipe, and high water tank passes through water inlet pipe
It is connected with chamber, water inlet pipe one end is connect with high water tank bottom, and the other end is detachably connected with chamber water inlet.
In order to further realize the present invention, the contact surface of the sillar group and chamber is sealed with epoxy resin.
In order to further realize the present invention, the rectifying component between chamber water inlet and sillar group includes the first rectification
Plate and the second cowling panel, the rectifying component between chamber water outlet and sillar group include third cowling panel.
In order to further realize the present invention, first cowling panel and the second cowling panel are arranged in parallel.
In order to further realize the present invention, the surrounding and examination of first cowling panel, the second cowling panel and third cowling panel
The inner wall of tryoff is fixedly connected.
In order to further realize the present invention, flowmeter is provided on the water inlet pipe.
A kind of basement rock weak structural face waterpower scour simulation method, which comprises the following steps:
S1. so that high water tank is in the highest order of test, water-filling carried out to chamber with high water tank, and by chamber
Gas discharge；
S2. tracer is added in chamber, tracer is flowed into from chamber water inlet, finally to chamber water outlet
Outflow, until tracer test terminates when entire cabinet is full of tracer.
S3. it gradually becomes smaller water flow by gradually decreasing the height of high water tank and tends to stable.
S4., the end of water inlet pipe is removed to from chamber water inlet and accessed chamber water outlet, makes chamber water inlet
It is exchanged with chamber water outlet function, the height for then gradually rising high water tank becomes larger water flow to high water tank to be in
The highest order of test, after a period of stabilisation off-test.
In order to further realize the present invention, the tracer is ink.
Beneficial effect
The present invention is provided with sillar group, sillar group by setting chamber and liftable high water tank, chamber middle part
It is arranged after cutting is polished into strip in sphere of movements for the elephants shape by four plots of weak sillars, it may be verified that basement rock weak structural face is in appropriate item
Leakage passage can be formed under part, structure novel is easy to operate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of basement rock weak structural face waterpower scour simulation device of the present invention；
Fig. 2 is the structural schematic diagram of sillar group in basement rock weak structural face waterpower scour simulation device of the present invention；
Fig. 3 is hydraulic slope J variation diagram；
Fig. 4 is coefficient of permeability K variation diagram；
Fig. 5 is the wide b variation diagram of Equivalent Hydraulic gap；
Fig. 6 is washout test J-K figure；
Fig. 7 is washout test J-V figure；
Fig. 8 is washout test J-Q figure；
Fig. 9 is washout test b-J figure.
Description of symbols
1, chamber；11, chamber water inlet；12, chamber water outlet；13, sillar group；131, epoxy resin；14,
One cowling panel；15, the second cowling panel；16, third cowling panel；17, pressure-measuring pipe；2, high water tank；21, water tank inlet；22, water
Case water outlet；3, water inlet pipe；31, flowmeter.
Specific embodiment
The following examples are further illustrations of the invention, rather than limiting the invention.
Embodiment one
As Figure 1-Figure 2, basement rock weak structural face waterpower scour simulation device of the present invention, including chamber 1 and can rise
The high water tank 2 of drop, in which:
Chamber 1 is made of organic glass, and the both ends of chamber 1 are provided with chamber water inlet 11 and chamber water outlet
Mouthfuls 12, sillar group 13 is provided in the middle part of chamber 1, and sillar group 13 is in after cutting is polished into strip by four plots of weak sillars
Sphere of movements for the elephants shape arranges, and " ten " word slit die between sillar intends weak structural face, the contact surface epoxy of sillar group 13 and chamber
Resin 131 seals, and flows out so that water flow all flows through to be stitched by " ten " word.
It is located at 13 two sides of sillar group in chamber 1 and is provided with rectifying component, is located at chamber water inlet 11 and sillar group 13
Between rectifying component include the first cowling panel 14 and the second cowling panel 15, the first cowling panel 14 and the second cowling panel 15 are parallel to each other
Setting, the rectifying component between 1 water outlet of chamber and sillar group 13 include third cowling panel 16, the first 14 plates of rectification, the
The surrounding of two cowling panels 15 and third cowling panel 16 is fixedly connected with the inner wall of chamber 1.
Chamber 1 is located at sillar group 13 and the bottom of rectifying component is provided with pressure-measuring pipe 17.
High water tank 2 is connected by water inlet pipe 3 with chamber 1, and 3 one end of water inlet pipe is connect with 2 bottom of high water tank, separately
One end is detachably connected with chamber water inlet 11, and flowmeter 31 is provided on water inlet pipe 3, is flowed for detecting from high water tank 2
To the flow of the water of chamber 1.
High water tank is provided with water tank inlet 21 and water outlet of water tank 22 on 2 side.
A kind of basement rock weak structural face waterpower scour simulation method,
Include the following steps；
Step 1, so that high water tank is in the highest order of test, water-filling is carried out to chamber with high water tank, this process
Chamber can generate bubble, and the gas of chamber is discharged.
Step 2, it uses ink as tracer, tracer is added in chamber, tracer is flowed from chamber water inlet
Enter, have the cowling panel with sieve pore due to perpendicular before and after sillar, have a buffer function to water water flow, tracer before cowling panel with water flow
It mixes, then by crack, is exported in crack and mix and tend to uniformly, finally to test with water flow between cowling panel
The outflow of case water outlet, until tracer test terminates when entire cabinet is full of tracer,
Step 3, it gradually becomes smaller water flow by gradually decreasing the height of high water tank and tends to stable；
Step 4, the end of water inlet pipe is removed to from chamber water inlet and accessed chamber water outlet, chamber is made to intake
Mouth and chamber water outlet function are exchanged, and the height for then gradually rising high water tank becomes larger water flow to high water tank
In the highest order of test, after a period of stabilisation off-test.
From tracer test it is found that due to crack presence, most of water flow is along crack quickly through illustrating advantage
The presence of stream keeps the rock mass near crack bigger by bourn acting force, is more advantageous to the erosion development of weak structural face.
Measurement daily, record 2 times for the previous period during test, next observation is primary daily, and then 2~4 days
Observation is primary.Observation project has: seepage discharge variation, piezometric head variation etc..
Test initial data such as the following table 1
1 waterpower scour simulation data of table
Data Processing Method
There is measured data in test: seepage discharge Q (m3/ s), water levels of upstream and downstream H1、H2(m), Fracture Width b before testing0
(mm), seepage paths L (m).
Perpendicular to the crack area of water (flow) direction
A=L1b01+L2b02-b01b02 (1)
Permeate infiltration rate
Average hydraulic gradient
Infiltration coefficient
Equivalent Hydraulic gap is wide
In formula, A is the crack area perpendicular to water (flow) direction, and V is infiltration infiltration rate, and J is average hydraulic gradient, and K is infiltration
Coefficient, b01、b02Horizontal, vertical direction Fracture Width respectively before test, b are that Equivalent Hydraulic gap is wide, L1For perpendicular to water flow side
To, horizontal direction crack length, L2For perpendicular to water (flow) direction, vertical direction crack length, ν is the dynamic viscosity of water, and g attaches most importance to
Power acceleration.
J, K, b can be found out according to test data measured, is plotted in 3- Fig. 5.It can be seen that from Fig. 3-Fig. 5, after J first becomes larger
Become smaller, and K, b are exactly the opposite.
In order to further seek J, K, V, Q, b respectively measure between inner link, respectively draw J-K, J-V, J-Q, b-J relationship
Curve graph (Fig. 6~Fig. 9).From these figures it is found that due to having exchanged intake-outlet on March 13rd, 2007, test data is total
Variation tendency is that hydraulic slope J first increases and then decreases, coefficient of permeability K first reduces and increases afterwards, after the wide b of Equivalent Hydraulic gap first reduces
Increase.In test, hydraulic slope J increases to 4.05 from 0.875, is then down to 0.5 again, and tend to be steady at the end of test is fast
It is fixed.Coefficient of permeability K is down to 7.4cm/s from 31.4, then increases to 52.1 again, and tend towards stability in trial stretch.Equivalent water
The wide b of power gap is decreased to 0.3mm from 0.6mm, is then gradually increasing, until off-test when 0.8mm.It is also seen that crack from figure
Coefficient of permeability K, flow Q, the wide b of Equivalent Hydraulic gap become smaller with the increase of hydraulic slope J, and flow velocity V slightly has with the increase of J
Increase, changes smaller.This is because b becomes smaller, and J increases, and shows that resistance increases, and therefore, K becomes when crack tends to deposit and become smaller
Small, Q also becomes smaller, and flow velocity is slightly changed, and when crack tends to erosion, situation is just opposite.
Experiments have shown that: rock cranny Fracture Width under groundwater effect first becomes smaller, and has Sedimentation Trend, exchanges water outlet
Afterwards, with the increase of hydraulic slope, fissure-plane nearby taken away by water flow by particle, and Fracture Width becomes larger.Change in direction of groundwater flow
Under the conditions of, rock cranny becomes larger.In actual conditions, especially dykes and dams, river position are frequently gone up and down, and direction of groundwater flow is also frequent
Alternately, weak structural face is become larger by current scour gap width, under suitable condition, can finally form concentrated leakage passage.
Therefore, this basement rock weak structural face waterpower scour simulation device, it may be verified that basement rock weak structural face under proper condition can shape
At leakage passage.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (8)
1. a kind of basement rock weak structural face waterpower scour simulation device, which is characterized in that including chamber and a liftable high position
Water tank, the both ends of the chamber are provided with chamber water inlet and chamber water outlet, are provided with rock in the middle part of the chamber
Block group, the sillar group are arranged in sphere of movements for the elephants shape after cutting is polished into strip by four plots of weak sillars, are located in chamber
Sillar group two sides are provided with rectifying component, and chamber is located at sillar group and the bottom of rectifying component is provided with pressure-measuring pipe, high water tank
It is connected by water inlet pipe with chamber, water inlet pipe one end is connect with high water tank bottom, and the other end and chamber water inlet can
Dismantling connection.
2. basement rock weak structural face waterpower scour simulation device according to claim 1, which is characterized in that the sillar group
It is sealed with the contact surface of chamber with epoxy resin.
3. basement rock weak structural face waterpower scour simulation device according to claim 1, which is characterized in that be located at chamber
Rectifying component between water inlet and sillar group includes the first cowling panel and the second cowling panel, is located at chamber water outlet and sillar group
Between rectifying component include third cowling panel.
4. basement rock weak structural face waterpower scour simulation device according to claim 3, which is characterized in that described first is whole
Flowing plate and the second cowling panel are arranged in parallel.
5. basement rock weak structural face waterpower scour simulation device according to claim 3, which is characterized in that described first is whole
The surrounding of flowing plate, the second cowling panel and third cowling panel is fixedly connected with the inner wall of chamber.
6. basement rock weak structural face waterpower scour simulation device according to claim 1, which is characterized in that the water inlet pipe
On be provided with flowmeter.
7. a kind of basement rock weak structural face waterpower scour simulation method using the experimental rig as described in claim 1~6 is any,
Characterized by comprising the following steps:
S1. so that high water tank is in the highest order of test, water-filling carried out to chamber with high water tank, and by the gas of chamber
Discharge；
S2. tracer is added in chamber, tracer is flowed into from chamber water inlet, finally to chamber water outlet stream
Out, until tracer test terminates when entire cabinet is full of tracer.
S3. it gradually becomes smaller water flow by gradually decreasing the height of high water tank and tends to stable.
S4., the end of water inlet pipe is removed to from chamber water inlet and accessed chamber water outlet, makes chamber water inlet and examination
Tryoff water outlet function is exchanged, and the height for then gradually rising high water tank becomes larger water flow to high water tank in test
Highest order, off-test after a period of stabilisation.
8. basement rock weak structural face waterpower scour simulation method according to claim 7, which is characterized in that the tracer
For ink.
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| CN201910179848.8A CN109813621A (en) | 2019-03-11 | 2019-03-11 | A kind of basement rock weak structural face waterpower scour simulation device and its test method |
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| CN201910179848.8A CN109813621A (en) | 2019-03-11 | 2019-03-11 | A kind of basement rock weak structural face waterpower scour simulation device and its test method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009631A (en) * | 1998-06-19 | 2000-01-14 | Agency Of Ind Science & Technol | Water permeability tester for rock sample |
| CN103323211A (en) * | 2013-06-19 | 2013-09-25 | 中国地质大学（北京） | Simulation test device of underground sediment blocking and dredging effects on fractures |
| CN104819921A (en) * | 2015-04-23 | 2015-08-05 | 绍兴文理学院 | Large-size rock fracture permeability test system and measuring method thereof |
| CN105158141A (en) * | 2015-09-08 | 2015-12-16 | 河海大学 | Recyclable coarse fracture high velocity seepage testing apparatus |
| CN206583597U (en) * | 2016-10-12 | 2017-10-24 | 珠江水利委员会珠江水利科学研究院 | It is easy to the high-velocity flow experimental rig of observation experiment achievement |
| CN108709843A (en) * | 2018-05-15 | 2018-10-26 | 长沙理工大学 | A kind of pilot system and test method measuring rock fracture multiphase porous flow characteristic |
| 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 |
| CN209656484U (en) * | 2019-03-11 | 2019-11-19 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of basement rock weak structural face waterpower scour simulation device |
-
2019
- 2019-03-11 CN CN201910179848.8A patent/CN109813621A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009631A (en) * | 1998-06-19 | 2000-01-14 | Agency Of Ind Science & Technol | Water permeability tester for rock sample |
| CN103323211A (en) * | 2013-06-19 | 2013-09-25 | 中国地质大学（北京） | Simulation test device of underground sediment blocking and dredging effects on fractures |
| CN104819921A (en) * | 2015-04-23 | 2015-08-05 | 绍兴文理学院 | Large-size rock fracture permeability test system and measuring method thereof |
| CN105158141A (en) * | 2015-09-08 | 2015-12-16 | 河海大学 | Recyclable coarse fracture high velocity seepage testing apparatus |
| CN206583597U (en) * | 2016-10-12 | 2017-10-24 | 珠江水利委员会珠江水利科学研究院 | It is easy to the high-velocity flow experimental rig of observation experiment achievement |
| CN108709843A (en) * | 2018-05-15 | 2018-10-26 | 长沙理工大学 | A kind of pilot system and test method measuring rock fracture multiphase porous flow characteristic |
| 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 |
| CN209656484U (en) * | 2019-03-11 | 2019-11-19 | 广东水利电力职业技术学院（广东省水利电力技工学校） | A kind of basement rock weak structural face waterpower scour simulation device |
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