CN203821298U - Model test device for studying underseepage damage of impermeable dam body - Google Patents
Model test device for studying underseepage damage of impermeable dam body Download PDFInfo
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- CN203821298U CN203821298U CN201420199689.0U CN201420199689U CN203821298U CN 203821298 U CN203821298 U CN 203821298U CN 201420199689 U CN201420199689 U CN 201420199689U CN 203821298 U CN203821298 U CN 203821298U
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Abstract
The utility model discloses a model test device for studying underseepage damage of an impermeable dam body. The device mainly comprises a main body test tank, a dam body simulation device, an upstream water level providing device and a data acquisition system.The influence of a rise of an upstream water level of an actual dam project on underseepage of the dam body can be simulated by observing the seepage through progressively raising a water head; particular dam body structures with different shape parameters can be simulated by changing angles of two rectangular water partitions and a distance between the bottoms of the rectangular water partitions; and a seepage field and a displacement field when the seepage occurs at the bottom of the dam body can be monitored in real time by a liquid level sensor and a dial indicator which are connected with a computer terminal.In conclusion, the device can provide theoretical guide for simulating the seepage of the actual dam and be used for teaching and scientific experiments of geotechnical engineering and hydraulic engineering.
Description
Technical field
The utility model relates to hydraulic engineering physical experiments field, specifically a kind of model test apparatus of studying waterproof dam body bottom seepage erosion.
Background technology
Seepage problems is the key of safety of dam body, the development history of the dykes and dams development history of seepage theory and seepage flow control theory namely in Hydraulic and Hydro-Power Engineering.For the safety problem of reservoir, dykes and dams the most widely in Hydraulic and Hydro-Power Engineering, seepage erosion is more outstanding, in dam body wrecking cause investigation at home and abroad, accounts for 45% left and right.The comprehensive benefits such as the flood control of dam and dyke, irrigation, generating, water supply, shipping, tourism and improvement ecology are huge, are important infrastructure and the safety assurance of Chinese society economy.The safety of these engineerings and the ups and downs, depend on the development of seepage theory and technology to a great extent.Therefore the research that, dam seepage destroys is very urgent.
Existing dam seepage model is only the seepage flow of having considered the permeable dam bodys such as earth and rockfill dam, for the seepage erosion bottom the waterproof dam bodys such as concrete dam, relates to seldom.Therefore need a kind of novel dam seepage damage model test device.
For the problem of these existence, the utility model provides a kind of experimental rig that actual dam seepage simulation provides theoretical direction that can be, and can simulate more really and test waterproof
dam body bottom seepage erosionseepage field, stress field etc.
Utility model content
In order to overcome the defect of prior art, the utility model adopts following scheme:
A kind of model test apparatus of studying waterproof dam body bottom seepage erosion, comprise water supply installation for upper pond level is provided, for filling the test flume device of sample, for the data acquisition unit of Data Collection and processing, wherein, water supply installation is communicated with test flume device by outlet pipe; Test flume device is connected with data acquisition unit by data wire; Described test flume device outside is the cuboid sample groove of upper opening, and inside arranges a dam body analogue means, and described dam body analogue means is by forming with lower member:
Chute is installed on by set bolt on the two side of place, cuboid sample flute length limit face, and two water-stop sheets are vertically mounted between chute.
Water supply installation described in the utility model is by portable tank, the mechanical driving device forming for the fixed pulley of Liftable and movable water tank and hawser, for the fixing installing rack composition of fixed pulley, wherein, described hawser one end is free end, and one end strides across pulley and is connected with portable tank.
One side of portable tank described in the utility model offers water inlet, and a side relative to water inlet offers overfall gap, and portable tank bottom offers outlet pipe.
Dam body analogue means described in the utility model also comprises roller, lower shaft parts, and wherein, water-stop sheet is arranged on lower shaft, and roller is arranged on lower shaft two ends, and water-stop sheet can rotate around lower shaft.
Test flume device described in the utility model is provided with horizontal scale line and angle measuring calibration dish on the outside that chute place face is installed.
Data acquisition unit described in the utility model comprises: the liquid level sensor that is uniformly distributed in test flume device downstream, dial gage, dial gage installing rack, wherein, described liquid level sensor is connected with terminal by data wire with dial gage, and dial gage installing rack is arranged on cuboid sample groove and installs on the inwall of chute place face vertical plane.
Compared with prior art, the utlity model has following beneficial effect:
This device described in the utility model can improve sample groove upper pond level by improving step by step portable feed tank, the impact of the rising of simulating actual dam construction upper pond level on dam body bottom seepage flow; Can be by changing the angle of two water-stop sheets of dam body analogue means and the dam structure that the spacing of rectangular slab bottom can be used for simulating concrete difformity parameter; Finally be connected to the liquid level sensor of terminal and dial gage seepage field, the displacement field in supervision subjects test flume downstream in real time.To sum up, this device can be actual dam seepage simulation theoretical direction is provided, and also can be used as the use of geotechnical engineering and hydraulic engineering teaching and scientific experiment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is model equipment water level in man-hour, soil sample schematic diagram.
In figure: 1, yoke 2, water inlet 3, fixed pulley 4, portable water level case 5, overfall gap 6, outlet pipe 7, hawser 8, set bolt 9, sample groove 10, chute 11, angle measuring calibration dish 12, liquid level sensor 13, terminal 14, water-stop sheet 15, dial gage 16, dial gage installing rack 17, horizontal scale bar 18, roller 19, lower shaft.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, the utility model discloses a kind of model test apparatus of studying waterproof dam body bottom seepage erosion, this device is mainly comprised of test flume device, water supply installation, data acquisition unit.
Test flume device described in the utility model outside is that a cuboid sample groove 9 without cover plate forms, one side has been reserved the installing hole that liquid level sensor is installed, in its other side, reserved the installing hole that connects portable water level case 5, described test flume device inside is a dam body analogue means, and described dam body analogue means is by forming with lower member:
Chute 10 is installed on cuboid sample groove 9 by set bolt 8 and grows on the two side of place, limit faces, and two water-stop sheets 14 are vertically mounted between chute 10.
Preferably, dam body analogue means described in the utility model also comprises roller 18, lower shaft 19 parts, and wherein, water-stop sheet 14 is arranged on lower shaft, and roller 18 is arranged on lower shaft 19 two ends.Wherein water-stop sheet 14 is organic glass, and water-stop sheet 14 can be used for simulating upstream face and the back side of waterproof dam body.Water-stop sheet 14 is installed between two chutes 10, by being arranged on the rolling of two poly (methyl methacrylate) plate upper rollers, can realizing poly (methyl methacrylate) plate and move horizontally freely in slot rolling.
As shown in Figure 2, preferably, sample groove 9 described in the utility model is provided with horizontal scale line and angle measuring calibration dish 11 on the side that chute 10 is installed.Throughput gusset and horizontal scale can adjust the angle of two poly (methyl methacrylate) plates and the spacing of end intuitively, accurately simulates the different parameters of various dam structures.
Preferably, water-stop sheet 14 described in the utility model can rotate around its lower shaft, adjusts angle and the spacing of two poly (methyl methacrylate) plates, can simulate the dam structure of various difformity parameters.
As shown in Figure 1, test flume device is communicated with by outlet pipe 6 with water supply installation.Described water supply installation by: for the fixing installing rack 1 of fixed pulley 3, for the fixed pulley 3 of Liftable and movable water tank 4 and the mechanical driving device of hawser 7 formations, portable tank 4 forms, wherein, described hawser 7 one end stride across pulley 3 and are connected with portable tank 4, and the other end is free end.This device can be used for simulating the lifting of actual dam configuration upper pond level, by fixed pulley, moves up and down the upper pond level that portable feed tank carrys out control subject test flume.
One side of portable tank 4 described in the utility model offers water inlet 2, and a side relative to water inlet 2 offers overfall gap 5, and portable tank 4 bottoms offer outlet pipe 6.
Data acquisition unit described in the utility model comprises: the liquid level sensor 13 that is uniformly distributed in test flume device downstream, be installed on the dial gage 15 on dial gage installing rack 16, the terminal 13 being connected with dial gage 15 with liquid level sensor 13 by data wire, wherein, described dial gage installing rack 16 is arranged on a side inwall of test flume device.This system can by sensor and dial gage with monitor in real time dam being connected of terminal at the bottom of seepage field and displacement field in flow event.
As shown in Figure 2, as a preferred embodiment of the present utility model, the test utilizing the utility model as the waterproof dam body of research bottom seepage erosion, can adopt following concrete implementation step:
A, in cuboid organic glass sample groove 9, layering packs soil sample into lower shaft, and carries out compacting, exhaust and saturated processing.
B, the dam body of simulating according to actual needs, change the angle of water retaining separater in dam body analogue means and the spacing between two water retaining separaters.
C, improve step by step the height of portable water level case, make cuboid organic glass test flume middle and upper reaches water level
Raise step by step, the impact of the rising that is used for simulating upper pond level on waterproof dam body bottom seepage flow.
D, be uniformly distributed in the liquid level sensor in test flume downstream and can measure relevant parameter by the fixing dial gage of organic glass installing rack, can monitor in real time seepage field and the displacement field in flow event at the bottom of dam by terminal.
This experimental rig is applicable to the research of dam body engineering seepage flow and seepage failure, for the constructions such as actual dam body engineering, design etc. provide guidance, also can be used as geotechnical engineering and the teaching of hydraulic engineering subject and the use of scientific experiment.
Claims (6)
1. the model test apparatus of the waterproof dam body of a research bottom seepage erosion, it is characterized in that, comprise water supply installation for upper pond level is provided, for filling the test flume device of sample, for the data acquisition unit of Data Collection and processing, wherein, water supply installation is communicated with test flume device by outlet pipe (6); Test flume device is connected with data acquisition unit by data wire; Described test flume device outside is the cuboid sample groove (9) of upper opening, and inside arranges a dam body analogue means, and described dam body analogue means is by forming with lower member:
Chute (10) is installed on cuboid sample groove (9) by set bolt (8) and grows on the two side of place, limit face, and two water-stop sheets (14) are vertically mounted between chute (10).
2. a kind of model test apparatus of studying waterproof dam body bottom seepage erosion according to claim 1, it is characterized in that, described water supply installation is by portable tank (4), for the fixed pulley (3) of Liftable and movable water tank (4) and the mechanical driving device of hawser (7) formation, being used for the fixedly installing rack (1) of fixed pulley (3) forms, wherein, described hawser (7) one end is free end, and one end strides across pulley (3) and is connected with portable tank (4).
3. a kind of model test apparatus of studying waterproof dam body bottom seepage erosion according to claim 2, it is characterized in that, one side of described portable tank (4) offers water inlet (2), a side relative to water inlet (2) offers overfall gap (5), and portable tank (4) bottom offers outlet pipe (6).
4. a kind of model test apparatus of studying waterproof dam body bottom seepage erosion according to claim 1, it is characterized in that, described dam body analogue means also comprises roller (18), lower shaft (19) parts, wherein, water-stop sheet (14) is arranged on lower shaft, roller (18) is arranged on lower shaft (19) two ends, and water-stop sheet (14) can rotate around lower shaft (19).
5. a kind of model test apparatus of studying waterproof dam body bottom seepage erosion according to claim 1, is characterized in that, described test flume device is provided with horizontal scale line and angle measuring calibration dish (11) on the outside that chute (10) place face is installed.
6. a kind of model test apparatus of studying waterproof dam body bottom seepage erosion according to claim 4, it is characterized in that, described data acquisition unit comprises: the liquid level sensor (13) that is uniformly distributed in test flume device downstream, dial gage (15), dial gage installing rack (16), wherein, described liquid level sensor (13) is connected with terminal (13) by data wire with dial gage (15), and dial gage installing rack (16) is arranged on cuboid sample groove (9) above and installs on the inwall of chute (10) place face vertical plane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199689.0U CN203821298U (en) | 2014-04-23 | 2014-04-23 | Model test device for studying underseepage damage of impermeable dam body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420199689.0U CN203821298U (en) | 2014-04-23 | 2014-04-23 | Model test device for studying underseepage damage of impermeable dam body |
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| CN203821298U true CN203821298U (en) | 2014-09-10 |
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| CN201420199689.0U Expired - Fee Related CN203821298U (en) | 2014-04-23 | 2014-04-23 | Model test device for studying underseepage damage of impermeable dam body |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804001A (en) * | 2016-06-02 | 2016-07-27 | 王嘉兴 | Loading method for arch dam model |
| CN106702952A (en) * | 2017-01-17 | 2017-05-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Test device and method for simulating seepage condition of landslide of earth-rock dam |
| CN106769783A (en) * | 2017-02-10 | 2017-05-31 | 水利部交通运输部国家能源局南京水利科学研究院 | The monitoring diagnosis device and method of a kind of earth and rockfill dam barrier performance deterioration |
| CN106836110A (en) * | 2016-12-27 | 2017-06-13 | 西安理工大学 | A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus |
| CN108279191A (en) * | 2018-03-20 | 2018-07-13 | 浙江大学 | Particle seepage flow migration three-dimensional visualization experimental rig based on trace method and method |
-
2014
- 2014-04-23 CN CN201420199689.0U patent/CN203821298U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804001A (en) * | 2016-06-02 | 2016-07-27 | 王嘉兴 | Loading method for arch dam model |
| CN106836110A (en) * | 2016-12-27 | 2017-06-13 | 西安理工大学 | A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus |
| CN106702952A (en) * | 2017-01-17 | 2017-05-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Test device and method for simulating seepage condition of landslide of earth-rock dam |
| CN106702952B (en) * | 2017-01-17 | 2018-08-14 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of earth and rockfill dam landslide observed seepage behavior simulation test device and method |
| CN106769783A (en) * | 2017-02-10 | 2017-05-31 | 水利部交通运输部国家能源局南京水利科学研究院 | The monitoring diagnosis device and method of a kind of earth and rockfill dam barrier performance deterioration |
| CN108279191A (en) * | 2018-03-20 | 2018-07-13 | 浙江大学 | Particle seepage flow migration three-dimensional visualization experimental rig based on trace method and method |
| CN108279191B (en) * | 2018-03-20 | 2023-12-15 | 浙江大学 | Particle seepage migration three-dimensional visual test device and method based on tracing method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |