CN206096122U - Reservoir dam slope analogue test device under drought and flood racing - Google Patents
Reservoir dam slope analogue test device under drought and flood racing Download PDFInfo
- Publication number
- CN206096122U CN206096122U CN201621100907.6U CN201621100907U CN206096122U CN 206096122 U CN206096122 U CN 206096122U CN 201621100907 U CN201621100907 U CN 201621100907U CN 206096122 U CN206096122 U CN 206096122U
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- dam
- drought
- racing
- dam body
- dam slope
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Abstract
The utility model relates to a reservoir dam slope analogue test device under drought and flood racing, the device include dustcoat and proof box, be equipped with the dam body model in the proof box, the dam body model adopts the land waste slag charge to make, storehouse dish cart face and upper reaches dam slope surface all are equipped with clay layer as dam body inclined wall, be equipped with the top cap with opening matched with on the dustcoat, be equipped with artificial rainfall simulation ware, air pressure machine and long arc hernia lamp on the top cap, be equipped with the drain pipe of the low reaches dam slope ponding that is used for discharging in the proof box, the multiunit sensor has been buried on the dam body model underground, the device's testing method simulates the drought and flood racing operating mode of dam body model through artificial rainfall simulation ware, long arc xenon lamp with air pressure machine to the space -time of dam body seepage flow field, stress field distributes under the drought and flood racing of digital simulation that records through pore water pressure sensor, soil pressure sensor and matrix suction sensing. The utility model discloses can provide technical support for the reservoir dam safe operation under the drought and flood racing, emergent strick precaution and decision -making.
Description
Technical field
This utility model is related to a kind of drought and waterlogging racing lower storage reservoir dam slope simulation test device, belongs to reservoir dam guard technology
Field.
Background technology
Extreme drought causes the soil body matric suction of reservoir upstream dam slope clay to increase, soil body tension stress and ftracture, from
And make reservoir upstream dam slope the crack of hazardness on a large scale occur, and Clay Microstructure impervious body is destroyed, now as met with rainfall, due to
Crack has little time spontaneous recovery, and dam body percolation path shortens, and hydraulic slope increase may cause soil body penetration to destroy；Meanwhile, rainwater enters
Ooze, the soil body matric suction of upstream dam slope clay is reduced, and shearing strength declines, and is also easily caused dam slope instabilty.Therefore, drought and waterlogging urgency
Turn to substantially increase reservoir dam slope Failure probability.
In addition, being compared analysis using the climate state figure Hunan Province low to dam break rate highest Shanxi Province and dam break rate
Also indicate that, drought and waterlogging racing lower storage reservoir security incident probability of happening is significantly improved.Understand refering to pertinent literature, historical Henan
758 dam break events are exactly the reservoir dam failure tragedy under the conditions of drought and waterlogging racing.
Although it should be noted that model test become reservoir dam have an accident study mechanism important means, it is existing
Model investigation be concentrated mainly on the upstream dam slope unstability assay device of sudden drawdown, and relevant drought and waterlogging racing lower storage reservoir
Dam slope seepage flow is also seldom related to the research for stablizing condition.Therefore, study a kind of drought and waterlogging racing lower storage reservoir dam slope analogue model examination
Experiment device, it is significant to further elucidating mechanism of collapsed dam and diaster prevention and control under drought and waterlogging racing.
The content of the invention
This utility model will solve technical problem：One kind is provided and can reflect that drought and waterlogging racing lower storage reservoir dam slope substrate is inhaled
Power, soil pressure, the assay device of pore water pressure time space distribution, so as to monitor dam slope different parts different periods stress and
The Changing Pattern and development trend of seepage parameters, obtains the change in time and space of dam body work condition under drought and waterlogging racing.
In order to solve above-mentioned technical problem, the utility model proposes technical scheme be：A kind of drought and waterlogging racing lower storage reservoir dam
Slope simulation test device, including open-topped outer housing and the proof box being arranged in outer housing, be provided with the proof box with
The scaled dam body model of dam body to be simulated, storehouse disk that the dam body model includes being sequentially connected, upstream dam slope, dam crest
With downstream dam slope, the dam body model made using land waste slag charge, the storehouse panel surface, upstream dam slope surface and near upper
The part dam crest surface of trip dam slope is equipped with argillic horizon as dam body sloping core；The outer housing is provided with the top being engaged with opening
Lid, the top cover are provided with sprinkler, blast machine and long arc xenon lamp, and the sprinkler includes what is connected with supply tank
Rainfall pipeline and the shower nozzle of the rainfall pipeline is arranged on, the proof box is provided with for discharging the row of downstream dam slope hydrops
Water pipe；Multigroup sensor is embedded with the dam body model, every group of sensor includes a matric suction sensor and difference
It is arranged on a forward and backward soil pressure sensor and a pore water pressure sensor of the matric suction sensor.
Preferably, the argillic horizon is made using the clay of dam body digging in-situ to be simulated, the granular-grade of the clay
With identical with the grain composition of undisturbed soil and initial aqueous rate with initial aqueous rate.
The further improvement of above-mentioned technical proposal is：Geotechnique is pasted with the inside of the proof box side plate of the dam body downstream
Cloth.So, when drain pipe discharges downstream dam slope hydrops, can prevent the rock ballast material of downstream dam slope from being taken away loss by current.
The further improvement of above-mentioned technical proposal is：The supply tank is arranged on the outside of outer housing, the supply tank with
Booster pump is provided between sprinkler, effusion meter and valve between the booster pump and sprinkler, is provided with.So can be with
The rainfall and rainfall intensity of precise control rain making, provides data support for follow-up analysis.Further, the blast
Machine is direct current blast machine, and the direct current blast machine is logical can to cross control electric current adjusting means regulation wind speed.So can be with precise control
With regulation wind speed, support with accurate data can be provided for follow-up analysis with sample.
The further improvement of above-mentioned technical proposal is：The proof box, outer housing and top cover adopt transparent organic glass
Make.The situation of change of dam body so can be recorded by image acquisition high-definition camera and camera etc., is such as caved in,
Fact at that time can be reduced.
The beneficial effect that this utility model brings is：When drought and waterlogging racing occurs, dam body stress field and seepage field drastically become
Change, tradition research is concentrated mainly on the upstream dam slope unstability of sudden drawdown, and rarely have the reservoir dam being related under drought and waterlogging racing to lose
Affairs that should be kept secret manages simulation test, and this utility model, can creatively by designing drought and waterlogging racing lower storage reservoir dam slope simulation test device
By dam body under the digital simulation drought and waterlogging racing of pore water pressure sensor, soil pressure sensor and matric suction sensor acquisition
The spatial and temporal distributions of seepage field, stress field, it is possible to intuitively observe the situation of change of dam slope external, can be big according to reservoir
Dam practical situation, discloses dam slope accident mechanism under drought and waterlogging racing by the test of drought and waterlogging racing lower storage reservoir dam slope analogue model, is drought
Reservoir dam safe operation, emergent strick precaution and decision-making under flooded racing provides technical support.
Specifically：1）This utility model can pass through for homogeneous earth dam accident indoor model test under drought and waterlogging racing
Simulate various different drought and waterlogging racing conditions analyze the external environmental conditions such as different drought condition, rainfall intensity, rainfall duration because
Dam slope accident situation under element.
2）This utility model can obtain dam slope pore water pressure under one or more complete drought and waterlogging racing cycles, base online
The temporal and spatial evolution of matter suction, crack progressing, is that Accurate Analysis drought and waterlogging racing lower storage reservoir dam is provided convenience condition,
Maintenance for dam in the case of drought and waterlogging racing provides theoretical foundation, so as to reduce the probability of dam generation.
3）This utility model has that principle is simple, operation is convenient, monitoring is quick, can repeatedly utilize, test serious forgiveness height etc.
Advantage.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of this utility model embodiment.
Specific embodiment
Embodiment
The drought and waterlogging racing lower storage reservoir dam slope simulation test device of the present embodiment is as shown in figure 1, including open-topped outer housing 1
And the proof box 2 being arranged in outer housing 1, it is provided with proof box 2 and dam body model 7 that dam body to be simulated is scaled,
Dam body model 7 includes storehouse disk AB, upstream dam slope BC, dam crest CD and the downstream dam slope DE being sequentially connected, and dam body model 7 adopts air slaking
Rock ballast material is made, and the part dam crest CD surfaces on storehouse disk AB surfaces, upstream dam slope BC surfaces and close upstream dam slope BC are equipped with
Argillic horizon is used as dam body sloping core.
The argillic horizon of the present embodiment is preferably made using the clay of dam body digging in-situ to be simulated, the granule of the clay
Level is matched somebody with somebody and initial aqueous rate is identical with the grain composition of undisturbed soil and initial aqueous rate.To open from reservoir scene when preparing argillic horizon
The clay of digging is dried in calorstat, match somebody with somebody according to original state soil class, initial aqueous rate prepare soil sample.In addition, the local material system of selection
The air slaking rock ballast of dam body after standby sloping core.During manufacture dam body model 7, land waste slag charge after dam body sloping core and dam are set in proof box
The mark of subregion, has filled behind dam behind land waste slag charge region first, then the clay soil sample for preparing has been adopted by undisturbed density
Loaded in proof box 2 with the method for placement in layers, that is, make and form storehouse disk AB, upstream dam slope BC, dam crest CD and downstream dam slope DE.
Upstream, the length of downstream dam slope, the width of dam crest, dam zoning are determined by the case history reduced scale conversion of simulation.
Outer housing 1 is provided with the joint portion of the top cover 3 being engaged with opening, outer housing 1 and top cover 3 and adopts rubber ring（In figure not
Illustrate）Encapsulation process, top cover 3 are provided with sprinkler, blast machine 13 and long arc xenon lamp 12, and the present embodiment apoplexy press 13 is
Model rustless steel novel air press 1250；Long arc xenon lamp 12 is NBET xenon long-arc lamp light source XE-JY.
Sprinkler includes the rainfall pipeline 4 connected with supply tank 5 and the multiple shower nozzles being arranged on rainfall pipeline 4
16, proof box 2 is provided with for discharging the drain pipe 6 of downstream dam slope DE hydrops, and drain pipe 6 is provided with valve.
The present embodiment is provided with two drain pipies in the bottom of outer housing 1, also is provided with valve on two drain pipies.When drain pipe 6
On valve open when, the bottom of outer housing 1 is provided with two drain pipies and also opens, such that it is able to successfully by the product of downstream dam slope DE
Water is discharged, such that it is able to more accurately simulate reservoir dam slope.
In the perforate of top cover top in the present embodiment, blast machine 13 is embedded in perforate and is fixedly mounted, the outer housing or top
Cover and be provided with power supply string holes, the power line of 12 grade of long arc xenon lamp is connected with external power source through power supply string holes.In addition, 1 He of outer housing
The joint portion of top cover 3 can be processed using seal with elastometic washer, and power supply string holes can be with blow-by.
In addition, the drain pipe with valve also is provided with proof box 2 at the base of dam upstream end of upstream dam slope BC, when artificial
When the rainfall of rain controller is excessive, many water can be let slip by the drain pipe and be drained.
Be embedded with four groups of sensors in the present embodiment on dam body model 7 altogether, respectively positioned at upstream dam slope base of dam upstream end and
In the middle part of downstream, and upstream dam slope, dam crest face, every group of sensor include a matric suction sensor 10 and be respectively provided with
In front of the matric suction sensor 10（With towards downstream direction as front in this utility model）A soil pressure sensor
11st, it is arranged on a pore water pressure sensor 9 at 10 rear of matric suction sensor.Every group of sensor Pore Pressure
Sensor 9 and soil pressure sensor 11 are respectively 10 centimetres with the distance of matric suction sensor 10.Wherein, matric suction sensing
10 model Fredlund FTC-100 thermal conductivity sensors of device；Pore water pressure sensor 11 is the miniature pore water pressures of AD-25
Force transducer；Soil pressure sensor 9 is the miniature soil pressure sensors of HM91.
Used as the improvement of the present embodiment, the outer housing 1 of the present embodiment, proof box 2 and top cover 3 are by transparent organic glass system
Into, naturally it is also possible to adopt other materials, but can be that to arrange image acquisition high outside using the benefit of transparent organic glass
Clear video camera or camera are recorded a video or are just taken pictures, and can record the evolution process of drought and waterlogging racing lower storage reservoir dam slope.
The perspex test case 2 of the present embodiment is made up of the five pieces of poly (methyl methacrylate) plates in front, rear, left and right and base plate, and in front and back two
Block poly (methyl methacrylate) plate is identical, thickness 5cm, length 600cm, height 200cm, and two pieces of left and right poly (methyl methacrylate) plate is identical, thickness 5cm,
Length 150cm, height 200cm, plexiglass base plate thickness 5cm, length 600cm, width 160cm.Lucite outer housing 1 by
The five pieces of poly (methyl methacrylate) plates in front, rear, left and right and base plate are made, and two pieces of poly (methyl methacrylate) plates are identical in front and back, thickness 5cm, length 700cm,
Height 250cm, two pieces of left and right poly (methyl methacrylate) plate are identical, thickness 5cm, length 200cm, height 250cm, plexiglass base plate thickness
5cm, length 600cm, width 210cm；Lucite top cover 3 is made up of the 5 pieces of poly (methyl methacrylate) plates in front, rear, left and right and top board, front
Two pieces of poly (methyl methacrylate) plates are identical afterwards, thickness 5cm, length 700cm, height 50cm, and two pieces of left and right poly (methyl methacrylate) plate is identical, thickness
5cm, length 200cm, height 50cm, plexiglass base plate thickness 5cm, length 700cm, width 210cm.
The length of the present embodiment middle and upper reaches dam slope BC and downstream dam slope DE is respectively 253cm, and slope ratio is 1:3, dam crest CD's
Width is 60cm, and the soil body thickness below dam foundation face is 60cm, and upstream water level is 60cm, and supply tank 5 is cylinder Tie Tong 200cm
×200cm（Diameter × height）, Clay Microstructure top width is 20cm, bottom width is 30cm, storehouse disc thickness is 15cm.Shower nozzle 16
For vertical rotary following spray shower nozzle, rainfall 1.0 ~ 1.5cm of radius.
The present embodiment can also make following improvement：Supply tank 5 is arranged on the outside of outer housing, supply tank 2 and sprinkler
Between be provided with booster pump 18, effusion meter 17 and valve are provided between booster pump 18 and sprinkler.So can be with precise control
The rainfall and rainfall intensity of rain making, provides data support for follow-up analysis.Further, blast machine 13 adopts direct current
Blast machine, direct current blast machine adjust wind speed by control electric current adjusting means.So with precise control and wind speed can be adjusted, together can
Accurate data are provided for follow-up analysis with sample to support.
In order to prevent dam body soil erosion, on the inside of two blocks of proof box side plates at dam body model upstream and downstream end, soil is pasted with
Work cloth.So, when drain pipe draining, can prevent the raw material of dam slope from being taken away loss by current, i.e., as shown in figure 1, by two pieces
Geotextiles 8 are respectively adhered on the left side plate medial surface of perspex test case 2.
The test method of the drought and waterlogging racing lower storage reservoir dam slope simulation test device of the present embodiment, comprises the following steps：
1）Water is filled in supply tank 5, sprinkler is opened, is continued rainfall and is excluded downstream dam slope DE hydrops, until
Water level in experimental box 2 reaches default normal pool level, stops rainfall；Wait carries out immersion moistening to dam body in 2-5 days, makes dam
Body forms steady seepage field；
2）Xenon long-arc lamp 12 and blast machine 13 are opened, and are kept 2 internal temperature of proof box to be not less than 30 DEG C, model are made in illumination
With lasting dehydration under wind condition, stop after continuing 20-25 days, now close xenon long-arc lamp 12 and 13 power supply of blast machine；
3）It is again turned on sprinkler, rainfall intensity is maintained at upstream dam slope BC has overland flow and not swash all the time
Slope, continues rainfall to water level and reaches normal pool level, then stop rainfall；
In execution step 1）-3）When, each pore water pressure sensor, soil pressure are recorded respectively at interval of 20-50 minutes
The reading of sensor and matric suction sensing, and continue to step 3）After the completion of 5-9 days, off-test.
This utility model is not limited to the concrete technical scheme described in above-described embodiment, in addition to the implementation, this practicality
It is new to have other embodiment.The technical scheme that all employing equivalents are formed, is the guarantor of this utility model requirement
Shield scope.
Claims (6)
1. a kind of drought and waterlogging racing lower storage reservoir dam slope simulation test device, it is characterised in that：Including open-topped outer housing and set
The proof box in outer housing is put, is provided with the proof box and dam body model that dam body to be simulated is scaled, the dam
Body Model includes storehouse disk, upstream dam slope, dam crest and the downstream dam slope being sequentially connected, and the dam body model adopts land waste slag charge system
Into the part dam crest surface of the storehouse panel surface, upstream dam slope surface and close upstream dam slope is equipped with argillic horizon as dam
Body sloping core；The outer housing is provided with the top cover being engaged with opening, and the top cover is provided with sprinkler, blast machine and long arc
Hernia lamp, the sprinkler are included the rainfall pipeline connected with supply tank and are arranged on the shower nozzle of the rainfall pipeline, institute
State proof box to be provided with for discharging the drain pipe of downstream dam slope hydrops；Multigroup sensor is embedded with the dam body model, often
Group sensor includes a matric suction sensor and is separately positioned on a forward and backward soil pressure of the matric suction sensor
Force transducer and a pore water pressure sensor.
2. drought and waterlogging racing lower storage reservoir dam slope simulation test device according to claim 1, it is characterised in that：Under the dam body
Geotextiles are pasted with the inside of the proof box side plate at trip end.
3. drought and waterlogging racing lower storage reservoir dam slope simulation test device according to claim 1, it is characterised in that：The supply tank
The outside of outer housing is arranged on, booster pump, the booster pump and sprinkler between the supply tank and sprinkler, is provided with
Between be provided with effusion meter and valve.
4. drought and waterlogging racing lower storage reservoir dam slope simulation test device according to claim 1, it is characterised in that：The blast machine
For direct current blast machine.
5. drought and waterlogging racing lower storage reservoir dam slope simulation test device according to claim 1, it is characterised in that：The argillic horizon
Made using the clay of dam body digging in-situ to be simulated, the grain composition and initial aqueous rate of the clay and undisturbed soil
Grade is with identical with initial aqueous rate.
6. drought and waterlogging racing lower storage reservoir dam slope simulation test device according to claim 1, it is characterised in that：The test
Case, outer housing and top cover are made using transparent organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621100907.6U CN206096122U (en) | 2016-09-30 | 2016-09-30 | Reservoir dam slope analogue test device under drought and flood racing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621100907.6U CN206096122U (en) | 2016-09-30 | 2016-09-30 | Reservoir dam slope analogue test device under drought and flood racing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206096122U true CN206096122U (en) | 2017-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621100907.6U Withdrawn - After Issue CN206096122U (en) | 2016-09-30 | 2016-09-30 | Reservoir dam slope analogue test device under drought and flood racing |
Country Status (1)
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| CN (1) | CN206096122U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405051A (en) * | 2016-09-30 | 2017-02-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Simulation test device for dam slope of reservoir under condition of sudden turn of drought and flood and test method |
| CN108535450A (en) * | 2018-04-16 | 2018-09-14 | 河南中亚交建集团有限公司 | A kind of flood overflows simulation laboratory test device and method of the dike to embankment erosion damage |
| CN108986579A (en) * | 2018-07-17 | 2018-12-11 | 水利部交通运输部国家能源局南京水利科学研究院 | The test method of crack of soils is induced when a kind of rehearsal for emergency flood fighting |
| CN110275009A (en) * | 2019-07-26 | 2019-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Dike piping simulation test device and test method under a kind of high water level |
-
2016
- 2016-09-30 CN CN201621100907.6U patent/CN206096122U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405051A (en) * | 2016-09-30 | 2017-02-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Simulation test device for dam slope of reservoir under condition of sudden turn of drought and flood and test method |
| CN106405051B (en) * | 2016-09-30 | 2018-10-02 | 水利部交通运输部国家能源局南京水利科学研究院 | Drought and waterlogging racing lower storage reservoir dam slope simulation test device and test method |
| CN108535450A (en) * | 2018-04-16 | 2018-09-14 | 河南中亚交建集团有限公司 | A kind of flood overflows simulation laboratory test device and method of the dike to embankment erosion damage |
| CN108535450B (en) * | 2018-04-16 | 2019-07-23 | 河南中亚交建集团有限公司 | A kind of flood overflows dike to the simulation laboratory test device and method of embankment erosion damage |
| CN108986579A (en) * | 2018-07-17 | 2018-12-11 | 水利部交通运输部国家能源局南京水利科学研究院 | The test method of crack of soils is induced when a kind of rehearsal for emergency flood fighting |
| CN110275009A (en) * | 2019-07-26 | 2019-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Dike piping simulation test device and test method under a kind of high water level |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170412 Effective date of abandoning: 20181002 |