CN105486601A - Method for simulating washout of dam overflow surface and test structure model adopted by method - Google Patents
Method for simulating washout of dam overflow surface and test structure model adopted by method Download PDFInfo
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- CN105486601A CN105486601A CN201510949157.3A CN201510949157A CN105486601A CN 105486601 A CN105486601 A CN 105486601A CN 201510949157 A CN201510949157 A CN 201510949157A CN 105486601 A CN105486601 A CN 105486601A
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- small box
- spillwag chute
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/002—Test chambers
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Abstract
The invention discloses a method for simulating washout of a dam overflow surface and a test structure model adopted by the method. According to the test structure model, a small box (3) is placed in a big box (1) containing reservoir water (2), a mixed concrete simulation overflow surface (4) is placed in the small box (3), the reservoir water (2) in the big box (1) is pumped to the position over the small box (3) through a water pump (6) to wash out the overflow surface (4) and then flows back to the big box (1), physical and chemical analysis is periodically performed on the reservoir water (2) in the big box (1), contrastive analysis is performed on the reservoir water (2) and the water quality before an experiment, and then the harm of chemical erosion on the overflow surface is simulated. The test model can achieve the indoor simulation process of simulating the washout of the dam overflow surface in a laboratory, and the changing characteristics of the dam overflow surface and the relation between the changing characteristics of the dam overflow surface and damage can be obtained through the test.
Description
Technical field
The present invention relates to hydraulic structure laboratory simulation technical field, particularly relate to a kind of simulate the erosion of dam spillwag chute method and the test structure model that adopts of the method.
Background technology
The most large medium-size station of China and reservoir have run and have exceeded Two decades years, also have more project go into operation successively and be completed in recent years.Almost the spillwag chute of each power station or reservoir dam is all by physics erosion to a certain extent and chemical erosion.
Because the dam spillwag chute of reality is huge, be unfavorable for that shop experiment room is analyzed the process that dam weathers, affect the Essential Analysis that it is corroded.
Summary of the invention
The object of the invention is to, there is provided a kind of and simulate the method for whole process and test structure model thereof that dam spillwag chute corrodes, in laboratory simulation power station, the formation of whole process that weathers of overflow of reservoir dam face and change provide data foundation close to reality.
For achieving the above object, the technical solution used in the present invention is:
First, the method of simulation dam spillwag chute of the present invention, it adopts and fills a placement small box in the large casing of reservoir water at one, the concrete simulation spillwag chute of mix is placed in small box, then by water pump the reservoir water in large casing is evacuated to above small box, spillwag chute is washed away after to flow back in large casing and circulation is carried out, then regular physics and chemistry analysis is carried out to the reservoir water in large casing, be analyzed with the water quality before experiment, thus simulate the harm of chemical erosion to spillwag chute.
Present invention employs a kind of like this erosion test structural model of simulating dam spillwag chute, it comprises the large casing that fills reservoir water, is provided with a small box in large casing, and the concrete placing mix in small box forms the spillwag chute of simulation; A plastic water pipe is provided with at the rear of small box, the upper end of plastic water pipe is connected with the flat water swivel being located at small box top, the lower end of plastic water pipe connects a water pump, and water pump is arranged in the hourglass string bag, and this hourglass string bag is immersed in the reservoir water in large casing.
Wherein, the bottom of described small box is higher than the water surface of reservoir water in large casing.Described small box is the cross section be made of metal is leg-of-mutton oblique type dead slot.Described flat water swivel is provided with the small sircle hole being easy to simulate Ba Shui.Described small box is supported on above the water surface of the reservoir water in large casing by the runners of four root post structures.The expansion trumpet type of described flat water swivel to be upper surface be 45 ° of dip plane is flat crosses water-bound, and be slab construction bottom its water side, small sircle hole in a row gathers on this flat board.
Test model of the present invention can in the lab simulation process of experiment lab simulation dam spillwag chute erosion.By test can draw dam spillwag chute variation characteristic and and injuring relation, also can by the current in test model, analyze water quality, draw the isoionic content of SO42-, HCO3-, Ca2+, Mg2+ and the data such as pH value, conductivity in seepage proof curtain body, for the process and change of analyzing the erosion of dam spillwag chute provide the data foundation close to reality.Macroscopically, the minute surface analysis on spillwag chute can be carried out, analyze the erosion condition on surface.In addition, after erosion a period of time, the storehouse water in large casing can be carried out distillation dry, finally draw weight eroded, analyze the composition of weight eroded.
Accompanying drawing explanation
Fig. 1 is device schematic perspective view of the present invention;
Fig. 2 is device front view of the present invention;
Fig. 3 is the flat water swivel part drawing of device of the present invention.
The large casing of description of reference numerals: 1-, 2-reservoir water, 3-small box, 4-spillwag chute, 5-runners, 6-water pump, 7-plastic water pipe, the flat water swivel of 8-, 9-small sircle hole, the 10-hourglass string bag.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1, this device of the present invention mainly comprises large casing 1, reservoir water 2(to be needed to illustrate herein: reservoir water 2 comprises the natural storehouse water of various medium), small box 3, spillwag chute 4, runners 5, water pump 6, plastic water pipe 7, flat water swivel 8, small sircle hole 9 and the hourglass string bag 10.
The parts such as plastic water pipe 7, flat water swivel 8 and the hourglass string bag 10 are omitted in composition graphs 2(Fig. 2) can find out, small box 3 for cross section be leg-of-mutton oblique type dead slot structure, small box 3 is supported in large casing 1 by runners 5, the spillwag chute 4 that concrete forms simulation is filled in small box 3, in large casing 1, reservoir water 2 is housed, the water surface of reservoir water 2 is positioned at below the bottom of small box 3, and therefore reservoir water 2 can not submerged overflow face 4.
As shown in Figure 3, the expansion trumpet type of flat water swivel 8 to be upper surfaces be 45 ° of dip plane is flat crosses water-bound, and the front end of its water outlet is positioned at the opening part of trumpet type expansion, and the bottom of water side is slab construction, and small sircle hole 9 in a row gathers on this flat board.The rear end of flat water swivel 8 connects plastic water pipe 7, be provided with water pump 6 bottom plastic water pipe 7, water pump 6 is arranged in the hourglass string bag 10, extracts reservoir water 2 by water pump 6, current are entered after flat water swivel 8 through plastic water pipe 7 and are come down in torrents to spillwag chute 4 by small sircle hole 9, form simulation.
Embodiment 1:
As shown in Figure 1, this device of the present invention can simulate the whole process that dam spillwag chute suffers erosion.During concrete enforcement, looking for the small box 3 that a metal material is made, is an oblique type dead slot, the concrete of mix is put into wherein, forms spillwag chute 4, entirety is put into large casing 1, supported by four runners 5, in large casing 1, add reservoir water 2, the water surface is no more than small box 3, opens water pump 6, reservoir water 2 in large casing 1 through water pump 6 through plastic water pipe 7, flat water swivel 8, flow out finally by small sircle hole 9, flow through spillwag chute 4, circulate with this.Be provided with a hourglass string bag 10 outside water pump 6, its act as and prevent physics erosion after impurity or in water sand blocking water pump.
The reservoir water 2 can regularly surveyed in large casing 1 can carry out physics and chemistry analysis, draw the primary evaluation factor such as content and pH value, conductivity, temperature field of SO42-, HCO3-, Ca2+, Mg2+, water analysis before contrast experiment is analyzed, and analytical chemistry corrodes the harm to spillwag chute.
Macroscopically, the minute surface analysis on spillwag chute can be carried out, analyze the erosion condition on surface.In addition, after erosion a period of time, the storehouse water in large casing 1 can be carried out distillation dry, finally draw weight eroded, analyze the composition of weight eroded.
Concrete grammar is as follows:
Reservoir water 2 is cycling use of waters, is all water pump 6 → flat water swivel 8 → spillwag chute 4 → reservoir water 2 → water pumps 6 for testing each time.Be such cyclic process, this process does not have the loss (ignoring the evaporation of moisture) of water, the carrying out of convenient test.In addition, large casing 1 adds a lid, moisture can be avoided to evaporate to make result more accurate.
An aperture can be added, for the collection of reservoir water 2 below large casing 1.The reservoir water 2 of collection be put in a large sweet crucible, heating makes moisture evaporate, until dry, collected by the solid matter on last crucible and weighs and can draw weight eroded.
Certainly, more than just embody rule example of the present invention, the technical scheme that the present invention also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within protection domain of the presently claimed invention.
Claims (7)
1. simulate the method for dam spillwag chute erosion for one kind, it is characterized in that: it adopts and fills a placement small box (3) in the large casing (1) of reservoir water (2) at one, concrete simulation spillwag chute (4) of mix is placed in small box (3), then the reservoir water (2) in large casing (1) being evacuated to after small box (3) top is washed away spillwag chute (4) by water pump (6) flows back in large casing (1), then regular physics and chemistry analysis is carried out to the reservoir water (2) in large casing (1), be analyzed with the water quality before experiment, thus simulate the harm of chemical erosion to spillwag chute.
2. simulate the erosion test structural model of dam spillwag chute for one kind, it is characterized in that: it comprises the large casing (1) that fills reservoir water (2), in large casing (1), be provided with a small box (3), the concrete placing mix in small box (3) forms the spillwag chute (4) of simulation; A plastic water pipe (7) is provided with at the rear of small box (3), the upper end of plastic water pipe (3) is connected with the flat water swivel (8) being located at small box (3) top, the lower end of plastic water pipe (3) connects a water pump (6), water pump (6) is arranged in the hourglass string bag (10), and this hourglass string bag (10) is immersed in the reservoir water (2) in large casing (1).
3. the erosion test structural model of simulation dam spillwag chute according to claim 2, is characterized in that: the bottom of described small box (3) is higher than the water surface of reservoir water (2) in large casing (1).
4. the erosion test structural model of simulation dam spillwag chute according to claim 3, is characterized in that: described small box (3) is the cross section be made of metal is leg-of-mutton oblique type dead slot.
5. the erosion test structural model of simulation dam spillwag chute according to claim 3, is characterized in that: described flat water swivel (8) is provided with the small sircle hole (9) being easy to simulate Ba Shui.
6. the erosion test structural model of simulation dam spillwag chute according to claim 3, is characterized in that: described small box (3) is supported on above the water surface of the reservoir water (2) in large casing (1) by the runners (5) of four root post structures.
7. the erosion test structural model of simulation dam spillwag chute according to claim 3, it is characterized in that: described flat water swivel (8) crosses water-bound for upper surface is that the expansion trumpet type of 45 ° of dip plane is flat, be slab construction bottom its water side, small sircle hole (9) in a row gathers on this flat board.
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| CN201510949157.3A CN105486601B (en) | 2015-12-18 | 2015-12-18 | The test structure model that the method and this method for simulating the erosion of dam spillwag chute use |
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| CN201510949157.3A CN105486601B (en) | 2015-12-18 | 2015-12-18 | The test structure model that the method and this method for simulating the erosion of dam spillwag chute use |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406375A (en) * | 2018-10-26 | 2019-03-01 | 西南石油大学 | A kind of fluid-guiding type coating material erosive wear resistance experimental provision and method |
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| CN205483878U (en) * | 2015-12-18 | 2016-08-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Simulation dam overflow surface's erosion test structure model |
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Patent Citations (8)
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| CN102590474A (en) * | 2012-02-08 | 2012-07-18 | 黄河水利委员会黄河水利科学研究院 | Fine water erosion simulation test device for slope channel system, and test method for fine water erosion simulation test device |
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| CN204045105U (en) * | 2014-07-11 | 2014-12-24 | 河海大学 | The device of the purification of water quality experiment of simulation earth surface of side slope and rain drop erosion experiment |
| CN204556426U (en) * | 2015-04-17 | 2015-08-12 | 河海大学 | A kind of analogue means of current erosion slope vegetation protection |
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| CN109406375A (en) * | 2018-10-26 | 2019-03-01 | 西南石油大学 | A kind of fluid-guiding type coating material erosive wear resistance experimental provision and method |
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