CN106836110B - A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus - Google Patents
A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus Download PDFInfo
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- CN106836110B CN106836110B CN201611223707.4A CN201611223707A CN106836110B CN 106836110 B CN106836110 B CN 106836110B CN 201611223707 A CN201611223707 A CN 201611223707A CN 106836110 B CN106836110 B CN 106836110B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
- E02B1/02—Hydraulic models
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- General Engineering & Computer Science (AREA)
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Abstract
A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus disclosed by the invention, including model test box, it is equipped with channel model in model test box, the two sides of channel model are equipped with partition, the surface of partition and model test box plane perpendicular, partition is equipped with several water seepage holes；The model test box two sides side wall opposite with partition is equipped with drainage hole, and model test box two sides and the perpendicular side wall of partition are equipped with pressure tap, and pressure tap is connected with pressure measuring unit by pipeline.A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus of the invention can be used for studying the method for improving the antiseepage of groundwater level region feed ditch, it is able to satisfy it both and irrigates the busy season with good seepage capability, be also able to satisfy irrigation dull season or winter anti-leakage lining will not be because uplift pressure is destroyed or frost heaving failure.
Description
Technical field
The invention belongs to agricultural water conservancy project equipment technical fields, and in particular to a kind of phreatic high irrigated area feed ditch is unidirectional
Flow model in porous media experimental rig.
Background technique
Important composition part of the diversion feed ditch as farmland water conservancy works, in China three Norths, Han Handiqu is widely used,
Its major function is to feed adequate water to irrigated area crops.Feed ditch area of section and its water level inside height are according to periphery agriculture
Depending on making plant water-requiring property, growing stage, weather, edaphic condition.The water busy season is needed in arid and crop plant, inside feed ditch
Water level is higher than level of ground water, it is therefore desirable to carry out seepage control measure to improve feed ditch Water application rate.Irrigation is not being needed on the contrary
In season, the water level inside feed ditch will be very low, even dry feed ditch, and level of ground water is higher than water in a canal position, raises to feed ditch lining cutting formation
Pressure；Especially in winter, the feed ditch lining cutting frost heave also easy to happen of high groundwater table.As it can be seen that needing water cycle process at this
In, a series of problems can be caused, full-section lining antiseepage is done if feed ditch Water application rate is improved, be reasonable irrigating the busy season
Desirable, but irrigating dull season or winter is then infeasible, reason is to irrigate dull season or winter feed ditch water level is low or even trunk canal, but
Level of ground water is very high on the outside of feed ditch lining cutting, and outside will form very high uplift pressure in such lining cutting, on the outside effect of water pressure
Under be easy to cause damage of lining；In addition to this, if feed ditch tunneling boring antiseepage, the feed ditch slope underground water on the outside of lining cutting cannot disappear
Subtract, the reduction of three Norths Han Qu winter surface temperature leads to water freezing after feed ditch lining cutting, and volume expansion forms frost heave, it is easy to cause to serve as a contrast
The extruding of block destroys.
Summary of the invention
The purpose of the present invention is to provide a kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus, for grinding
The method for how improving groundwater level region feed ditch antiseepage studied carefully.
The technical scheme adopted by the invention is that: a kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus,
Including model test box, channel model is equipped in model test box, the two sides of channel model are equipped with partition, and partition and model try
The surface of tryoff plane perpendicular, partition is equipped with several water seepage holes；On the side wall opposite with the partition of model test box two sides
Equipped with drainage hole, model test box two sides and the perpendicular side wall of partition are equipped with pressure tap, and pressure tap is connected with by pipeline
Pressure measuring unit.
The features of the present invention also characterized in that
The upper surface of channel model is equipped with concrete lining.
Pressure measuring unit includes bracket, and bracket is equipped with several pressure-measuring pipes being vertically arranged, and pressure-measuring pipe and pressure tap one are a pair of
It answers, pressure-measuring pipe is connected by pipeline with pressure tap.
Drainage hole is connected with drainpipe, and drainpipe is equipped with valve.
The beneficial effects of the present invention are: a kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus, Ke Yiyong
How to improve the method for groundwater level region feed ditch antiseepage in research, is able to satisfy it both and irrigates the busy season with good antiseepage
Ability improves feed ditch Water application rate, is also able to satisfy irrigation dull season or winter anti-leakage lining will not be because uplift pressure is destroyed or frost heave
It destroys；Assess the water-saving result of water-economizing project；It is preferred that anti-seepage scheme, builds shield scheme for next step feed ditch and provides technology branch
It holds；Different geological conditions, difference water in a canal position and different level of ground water antiseepages front and back water efficiency of canal are analyzed, is rationally true
Determine feed ditch Water application rate and technical support is provided；By changing soil body form in slot, the native stone of different impervious forms can be also carried out
Dam seepage tests can farthest reduce experimentation cost, have stronger popularization practical value.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus of the present invention；
Fig. 2 is a kind of main view of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus model test box of the present invention
Figure；
Fig. 3 is a kind of structural representation of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus partition of the present invention
Figure.
In figure, 1. model test boxes, 2. partitions, 3. water seepage holes, 4. channel models, 5. pressure taps, 6. brackets, 7. drainings
Hole, 8. pressure-measuring pipes.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in detail.
The present invention provides a kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus, as shown in Figure 1, Figure 2 and Figure 3
It is shown, including model test box 1, model test box 1 is interior to be equipped with channel model 4, and the two sides of channel model 4 are equipped with partition 2, every
The surface of plate 2 and 1 plane perpendicular of model test box, partition 2 is equipped with several water seepage holes 3；1 two sides of model test box and partition phase
Pair side wall be equipped with drainage hole 7,1 two sides of model test box and the perpendicular side wall of partition are equipped with pressure tap 5, pressure tap 5
Pressure measuring unit is connected with by pipeline.
The upper surface of channel model 4 is equipped with concrete lining.
Pressure measuring unit includes bracket 6, and bracket 6 is equipped with several pressure-measuring pipes 8 being vertically arranged, pressure-measuring pipe 8 and pressure tap 5 one
One is corresponding, and pressure-measuring pipe 8 is connected by pipeline with pressure tap 5.
Drainage hole 7 is connected with drainpipe, and drainpipe is equipped with valve.
In use, as shown in Figure 1,1 surrounding of model test box is the organic glass case for adding steel girt strip, 1 side of model test box
Scale is also posted on wall；Channel model 4 is pounded by sandy soil, and the channel in simulation reality, the upper surface of channel model 4 is also set
There are concrete lining, ground and concrete lining to make by model scale and the material likelihood ratio, head is maintained in channel model 4
It is constant, the exudation water at drainage hole 7 is collected, influence of the model surface water evaporation to test result is avoided；Partition 2 and mould
Water level between 1 side wall of type chamber is used to simulated groundwater position, and the outer level of ground water of channel model 4 passes through outside model test box 1
The drainage hole 7 that is arranged on side plate controls；Start to test after having formed steady seepage field in 4 ground of channel model, pass through
Drainage hole 7 at the original level of ground water elevation of 4 ground of channel model collects water amount of seepage, carries out regime flow calculating, draining
Hole 7 is also connected with overflow valve by pipeline, and the height of overflow valve can according to need adjustment；It can also be tried as needed in model
Pressure tap 5 is set on the side wall of the length direction of tryoff 1, and pressure tap 5 passes through the glass pressure tube meter one in pipeline and pressure measuring unit
One is connected, and can measure the water level elevation of seepage field each point.Practical seepage discharge in situ need to use model actual measurement flow and geometric similarity,
Kinematic similitude and dynamic similarity coefficient convert, and for various soils and anti-leakage lining, need to only repeat the above process.
A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus of the invention has the following advantages: can be used for
Research improve the antiseepage of groundwater level region feed ditch method, make its be both able to satisfy irrigate the busy season have good seepage capability,
Feed ditch Water application rate is improved, irrigation dull season is also able to satisfy or winter anti-leakage lining will not be because uplift pressure is destroyed or frost heaving failure；
Assess the water-saving result of water-economizing project；It is preferred that anti-seepage scheme, builds shield scheme for next step feed ditch and provides technical support；Analysis
Water efficiency of canal before and after different geological conditions, different water in a canal positions and different level of ground water antiseepages, rationally to determine feed ditch
Water application rate provides technical support by changing soil body form in slot, can also carry out the earth-rock dam seepage examination of different impervious forms
It tests, can farthest reduce experimentation cost, there is stronger popularization practical value.
Claims (1)
1. a kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus, which is characterized in that including model test box
(1), channel model (4) are equipped in the model test box (1), the two sides of the channel model (4) are equipped with partition (2), institute
Partition (2) and model test box (1) plane perpendicular are stated, the surface of the partition (2) is equipped with several water seepage holes (3)；Model examination
Tryoff (1) the two sides side wall opposite with the partition is equipped with drainage hole (7), model test box (1) two sides and the partition phase
Vertical side wall is equipped with pressure tap (5), and the pressure tap (5) is connected with pressure measuring unit by pipeline；
The upper surface of the channel model (4) is equipped with concrete lining；
The pressure measuring unit includes bracket (6), and the bracket (6) is equipped with several pressure-measuring pipes (8) being vertically arranged, the survey pressure
It manages (8) and pressure tap (5) to correspond, the pressure-measuring pipe (8) is connected by pipeline with pressure tap (5)；
In use, model test box (1) surrounding is the organic glass case for adding steel girt strip, also posted on model test box (1) side wall
Scale；Channel model (4) is pounded by sandy soil, and the channel in simulation reality, the upper surface of channel model (4) is additionally provided with coagulation
Native lining cutting, ground and concrete lining are made by model scale and the material likelihood ratio, maintain head not in channel model (4)
Become, collect the exudation water at drainage hole (7), avoids influence of the model surface water evaporation to test result；Partition (2) with
Water level between model test box (1) side wall is used to simulated groundwater position, and channel model (4) outer level of ground water passes through model test
The drainage hole (7) that is arranged on case (1) outer panel controls；It is opened after having formed steady seepage field in channel model (4) ground
Begin to test, water amount of seepage is collected by the drainage hole (7) at the original level of ground water elevation of channel model (4) ground, carries out steady
Constant flow calculates, and drainage hole (7) is also connected with overflow valve by drainpipe, and the height of overflow valve can adjust as needed；Also
Pressure tap (5) can be set on the side wall of the length direction of model test box (1) as needed, pressure tap (5) passes through pipeline
It is connected one by one with the glass pressure tube meter in pressure measuring unit, the water level elevation of seepage field each point can be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223707.4A CN106836110B (en) | 2016-12-27 | 2016-12-27 | A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611223707.4A CN106836110B (en) | 2016-12-27 | 2016-12-27 | A kind of phreatic high irrigated area feed ditch Mono direct percolation model test apparatus |
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| CN106836110A CN106836110A (en) | 2017-06-13 |
| CN106836110B true CN106836110B (en) | 2019-10-25 |
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| CN108490140A (en) * | 2018-06-04 | 2018-09-04 | 中国农业科学院农田灌溉研究所 | A kind of closed drainage testing of materials survey hole that the row of filling is dual-purpose |
| CN110068473A (en) * | 2019-05-29 | 2019-07-30 | 苏州大学 | A kind of large-diameter earth pressure shield tunnel driving interface simulation test method and its system |
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| JP3826012B2 (en) * | 2001-10-31 | 2006-09-27 | 株式会社東芝 | Sea life adhesion prevention device and operation method thereof |
| KR20100044505A (en) * | 2008-10-22 | 2010-04-30 | 한국전력공사 | Waterway structure for prevention of foam formation at the discharge channel of the power plant |
| CN203324144U (en) * | 2013-07-10 | 2013-12-04 | 中国科学院新疆生态与地理研究所 | Runoff infiltration simulation device |
| CN103592424B (en) * | 2013-11-29 | 2015-08-19 | 四川大学 | Bedding bank slope piestic water physical model test device |
| CN203821298U (en) * | 2014-04-23 | 2014-09-10 | 河海大学 | Model test device for studying underseepage damage of impermeable dam body |
| CN204389197U (en) * | 2015-01-29 | 2015-06-10 | 河海大学 | A kind of cold district frozen soil layer infitration galleries catchments analogue means |
| CN204789276U (en) * | 2015-06-29 | 2015-11-18 | 昆明理工大学 | Experimental operating means of research storehouse bank slope erosion harm |
| CN206515207U (en) * | 2016-12-27 | 2017-09-22 | 西安理工大学 | A kind of irrigated area feed ditch seepage flow test device |
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