CN203706520U - Teaching experimental instrument demonstrating piping phenomenon - Google Patents
Teaching experimental instrument demonstrating piping phenomenon Download PDFInfo
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- CN203706520U CN203706520U CN201320867625.9U CN201320867625U CN203706520U CN 203706520 U CN203706520 U CN 203706520U CN 201320867625 U CN201320867625 U CN 201320867625U CN 203706520 U CN203706520 U CN 203706520U
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- inhalant region
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- piping phenomenon
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Abstract
The utility model discloses a teaching experimental instrument demonstrating piping phenomenon. The instrument comprises a water inlet region, a water inlet, a soil body region, gauze layers, a water outlet region, and a water outlet. The water inlet region is arranged vertically. The soil body region and the water outlet region are arranged horizontally. The outer wall of the soil body region is a transparent layer. An end of the soil body region is communicated with the bottom end of the water inlet region, and the other end is communicated with the water outlet region. Communicated positions of the soil body region and the water inlet region, and the soil body region and the water outlet region are provided with the gauze layer. The water inlet is disposed on the top end of the water inlet region. The water outlet is disposed on an opposite end of a connecting end of the water outlet region and the soil body region. The instrument can visually demonstrate the piping phenomenon, being beneficial for students to understand soil mechanics, and meanwhile the whole teaching experimental instrument is simple in operation, low in cost, and easy in production.
Description
Technical field
The utility model relates to a kind of soil mechanics teaching and experiment equipment, specifically relates to a kind of teaching and experiment equipment of demonstrating inside soil body Piping phenomenon.
Background technology
As the scholar of study industry science, we fully recognize that teaching demonstration device is in our theory study, the importance that practice is inquired into, and in the time of study Soil Mechanics Course, the opacity of earth has all brought very large difficulty for " piping " phenomenon of its inside and the understanding of character to us.
The experimental apparatus of simulation Piping phenomenon has at present:
Have one " base pit engineering seepage failure model test apparatus ", it can simulate seepage field, stress field and the deformation field of base pit engineering, can simulate piping, quicksand, prominently the typical base pit engineering seepage failure phenomenon such as gush.But it is not suitable as teaching and experiment equipment, and it cannot allow students see the variation of inside soil body.
Also have a kind of " a kind of test unit and test method of studying embankment project Piping phenomenon ", it is by SCM Based intelligent head control system, soil sample is applied to the head difference that is in time sinusoidal variation, cause the seepage failures such as the development of soil sample seepage flow and even piping, the measurement mechanism such as water pressure sensor, electronic flow-meter is set in addition in soil sample, can obtains corresponding seepage field.This instrument Data Collections that tend to, instead of lecture experiment more.
In this external disclosed patent family, most experimental provision all lays particular emphasis on shutoff and detecting Piping phenomenon, is all unfavorable for the observation of student to experimental phenomena.
Summary of the invention
Utility model object: the technical problems to be solved in the utility model is to provide a kind of teaching and experiment equipment of demonstrating inside soil body Piping phenomenon.
Technical scheme: in order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of teaching and experiment equipment of demonstrating Piping phenomenon, comprise inhalant region, water inlet, soil body district, gauze layer, exhalant region and water delivering orifice, described inhalant region is vertically to arrange, soil body district and exhalant region are for being horizontally disposed with, described soil body district outer wall is hyaline layer, one end, soil body district is communicated with inhalant region bottom, the other end is communicated with exhalant region, soil body district and inhalant region, the connectivity part of exhalant region is equipped with gauze layer, described water inlet is located at inhalant region top, water delivering orifice is located at the opposing end of exhalant region and soil body district link.
The soil body of inside, above-mentioned soil body district is the potpourri of transparent soil and polychrome sand, the preparation method of this potpourri is: be that 1:1 mixes by n-dodecane and paraffin oil volume ratio, in mixing object, scatter the fused quartz sand of disproportionately graded, stir with glass bar while scattering, then press fused quartz sand and the coloured sandstone mass ratio 100:1 mixing particle diameter coloured sandstone at 0.075 ~ 0.25mm, then lucifuge is placed one hour.
Between described gauze layer and inhalant region, be equipped with orifice plate between gauze layer and exhalant region, can weaken the kinetic energy of water.
The above-mentioned kinetic energy that weakens water is in order to ensure that in soil body district, Piping phenomenon is to be caused by the osmotic pressure between water inlet and water delivering orifice.
Described inhalant region below is provided with bearing, and described bearing is connected with inhalant region bottom thread, flushes bottom described rest base and exhalant region, can keep stablizing of whole instrument, and can, according to the flatness of platform of putting instrument, carry out height fine adjusting function to bearing.
Described inhalant region, soil body district and exhalant region are square tube, can make so better to connect between each pipeline, have strengthened the sealing of junction.
Described inhalant region inside is provided with more than one energy dissipating plate, described energy dissipating plate one end and inhalant region inwall are connected, the other end leaves gap with the opposite face of the inwall that is connected, one end that described energy dissipating plate is not connected with inhalant region inwall, lower than the end that is connected with inhalant region inwall, can further be weakened the kinetic energy of water and can ensure that all water can flow into inhalant region bottom.
Preferably, the quantity of described energy dissipating plate is 2-7, and to be that left and right is staggered be fixed on inhalant region inwall adjacent two energy dissipating plates.
Preferably, the quantity of described energy dissipating plate is 5.
Principle of work: the utility model utilizes the hyaline layer of soil body district outer wall and the permeability of soil body district inner transparent soil can well see inside soil body, and under the effect of osmotic pressure, polychrome sandstone " flows " in transparent soil, reaches the effect of demonstrating Piping phenomenon.
Beneficial effect: the utility model can be demonstrated Piping phenomenon intuitively, is conducive to the understanding of student to soil mechanics, and whole teaching and experiment equipment is simple to operate, with low cost simultaneously, is easy to produce.
Brief description of the drawings
Fig. 1 is the use constitutional diagram of the teaching and experiment equipment of the utility model demonstration Piping phenomenon;
Fig. 2 is the structural representation of the teaching and experiment equipment of this demonstration Piping phenomenon;
In figure, 1 is inhalant region, and 2 is soil body district, and 3 is exhalant region, and 4 is bearing, and 5 is energy dissipating plate, and 6 is gauze layer, and 7 is orifice plate, and 8 is water inlet, and 9 is water delivering orifice.
Embodiment
The teaching and experiment equipment of demonstration Piping phenomenon as shown in Figure 1-2, comprise inhalant region 1, water inlet 8, soil body district 2, gauze layer 6, exhalant region 3 and water delivering orifice 9, described inhalant region 1 is vertically to arrange, soil body district 2 and exhalant region 3 are for being horizontally disposed with, described soil body district 2 outer walls are hyaline layer, 2 one end, soil body district are communicated with inhalant region 1 bottom, the other end is communicated with exhalant region 3, soil body district 2 is equipped with gauze layer 6 with the connectivity part of inhalant region 1, exhalant region 3, described water inlet 8 is located at inhalant region 1 top, and water delivering orifice 9 is located at the opposing end of exhalant region 3 and soil body district 2 links.
Between gauze layer 6 and inhalant region 1, be equipped with orifice plate 7 between gauze layer 6 and exhalant region 3.
Inhalant region 1 below is provided with bearing 4, and bearing 4 is connected with inhalant region 1 bottom thread, and bearing 4 bottoms flush with exhalant region 3 bottoms, can keep the stable of whole instrument, according to the flatness of platform of putting instrument, can carry out height fine adjusting function to bearing 4.
5 energy dissipating plates 5 are established in inhalant region 1 inside, described energy dissipating plate 5 one end and inhalant region 1 inwall are connected, the other end leaves gap with the opposite face of the inwall that is connected, one end that described energy dissipating plate 5 is not connected with inhalant region 1 inwall is lower than the end that is connected with inhalant region 1 inwall, and adjacent two energy dissipating plates 5 are fixed on inhalant region 1 inwall for left and right is staggered.
The soil body of 2 inside, soil body district is to be that 1:1 mixes by n-dodecane and paraffin oil volume ratio, in mixing material, scatter the fused quartz sand of disproportionately graded, stir with glass bar while scattering, obtain transparent soil, then in the transparent soil of gained, be 0.075 ~ 0.25mm yellow ground stone by fused quartz sand and yellow ground stone mass ratio 100:1 mixing particle diameter, then lucifuge is placed the potpourri of one hour gained.
When experiment, water enters from water inlet 8, after 5 energy dissipatings of energy dissipating plate, then by orifice plate 7 and gauze layer 6, the trickling that water body is relaxed, under the effect of osmotic pressure, water body infiltrates soil body district 2.Join poorly due to transparent soil class, in the interstitial channels that yellow ground stone can form at thick grogs, be moved and be taken away (Piping phenomenon) by current, because soil body district 2 outer walls are hyaline layer, the permeability of transparent soil, we can see the variation of inside soil body.
The undeclared part that relates in the utility model is same as the prior art or adopt prior art to be realized.
Claims (7)
1. a teaching and experiment equipment of demonstrating Piping phenomenon, is characterized in that: comprise inhalant region (1), water inlet (8), soil body district (2), gauze layer (6), exhalant region (3) and water delivering orifice (9), described inhalant region (1) is vertically to arrange; Described soil body district (2) and exhalant region (3) are for being horizontally disposed with, soil body district (2) outer wall is hyaline layer, one end, soil body district (2) is communicated with inhalant region (1) bottom, the other end is communicated with exhalant region (3), and soil body district (2) are equipped with gauze layer (6) with the connectivity part of inhalant region (1), exhalant region (3); Described water inlet (8) is located at inhalant region (1) top, and water delivering orifice (9) is located at the opposing end of exhalant region (3) and soil body district (2) link.
2. the teaching and experiment equipment of demonstration Piping phenomenon according to claim 1, is characterized in that: between described gauze layer (6) and inhalant region (1), be equipped with orifice plate (7) between gauze layer (6) and exhalant region (3).
3. the teaching and experiment equipment of demonstration Piping phenomenon according to claim 1, it is characterized in that: described inhalant region (1) below is provided with bearing (4), described bearing (4) is connected with inhalant region (1) bottom thread, and described bearing (4) bottom flushes with exhalant region (3) bottom.
4. according to the teaching and experiment equipment of the demonstration Piping phenomenon described in claim 1-3 any one, it is characterized in that: described inhalant region (1), soil body district (2) and exhalant region (3) are square tube.
5. the teaching and experiment equipment of demonstration Piping phenomenon according to claim 4, it is characterized in that: described inhalant region (1) inside is provided with more than one energy dissipating plate (5), described energy dissipating plate (5) one end and inhalant region (1) inwall are connected, the other end leaves gap with the opposite face of the inwall that is connected, and one end that described energy dissipating plate (5) is not connected with inhalant region (1) inwall is lower than the end that is connected with inhalant region (1) inwall.
6. the teaching and experiment equipment of demonstration Piping phenomenon according to claim 5, is characterized in that: the quantity of described energy dissipating plate (5) is 2-7, and adjacent two energy dissipating plates (5) are fixed on inhalant region (1) inwall for left and right is staggered.
7. the teaching and experiment equipment of demonstration Piping phenomenon according to claim 6, is characterized in that: the quantity of described energy dissipating plate (5) is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867625.9U CN203706520U (en) | 2013-12-27 | 2013-12-27 | Teaching experimental instrument demonstrating piping phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320867625.9U CN203706520U (en) | 2013-12-27 | 2013-12-27 | Teaching experimental instrument demonstrating piping phenomenon |
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| Publication Number | Publication Date |
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| CN203706520U true CN203706520U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320867625.9U Expired - Fee Related CN203706520U (en) | 2013-12-27 | 2013-12-27 | Teaching experimental instrument demonstrating piping phenomenon |
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| CN (1) | CN203706520U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527404A (en) * | 2016-01-22 | 2016-04-27 | 西南交通大学 | Test system and method for simulating ground loss extension in shield tunnel vertical section |
| CN110221038A (en) * | 2019-05-11 | 2019-09-10 | 江苏中达勘察设计有限公司 | A kind of piping in foundation pit simulation test device and test method |
| CN112834406A (en) * | 2021-01-08 | 2021-05-25 | 南京福欧地下空间数据科技有限公司 | Foundation pit piping image acquisition device and use method |
-
2013
- 2013-12-27 CN CN201320867625.9U patent/CN203706520U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527404A (en) * | 2016-01-22 | 2016-04-27 | 西南交通大学 | Test system and method for simulating ground loss extension in shield tunnel vertical section |
| CN110221038A (en) * | 2019-05-11 | 2019-09-10 | 江苏中达勘察设计有限公司 | A kind of piping in foundation pit simulation test device and test method |
| CN112834406A (en) * | 2021-01-08 | 2021-05-25 | 南京福欧地下空间数据科技有限公司 | Foundation pit piping image acquisition device and use method |
| CN112834406B (en) * | 2021-01-08 | 2022-08-09 | 南京福欧地下空间数据科技有限公司 | Foundation pit piping image acquisition device and use method |
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| Date | Code | Title | Description |
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| 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: 20140709 Termination date: 20161227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |