CN108597353A - A kind of indoor instruction model of original position bailing test - Google Patents
A kind of indoor instruction model of original position bailing test Download PDFInfo
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- CN108597353A CN108597353A CN201810418077.9A CN201810418077A CN108597353A CN 108597353 A CN108597353 A CN 108597353A CN 201810418077 A CN201810418077 A CN 201810418077A CN 108597353 A CN108597353 A CN 108597353A
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- soil sample
- water
- sample groove
- slot
- suction eye
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/06—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes for surveying; for geography, e.g. relief models
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- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of indoor instruction models of bailing test in situ, including the suction eye being arranged concentrically from inside to outside（4）, soil sample groove（1）, water level slot（2）With overflow collection slot（3）, the suction eye（4）With soil sample groove（1）Height it is identical, the soil sample groove（1）Inner wall on be glued with geotextiles（9）, drinking-water pipe（5）Water inlet be set to the suction eye（4）It is interior, the drinking-water pipe（5）Water outlet be set to the overflow collection slot（3）It is interior, the overflow collection slot（3）On be provided with the osculum being connected with sewer（7）, the drinking-water pipe（5）On be provided with valve（6）.The present invention can carry out the simulated experiment of bailing test in situ indoors, can both carry out the teaching of relevant knowledge, allow student to recognize water pumping experiment in situ there are one relatively intuitive, while can also avoid directly carrying out all many condition restricted problem of field test.
Description
Technical field
The present invention relates to a kind of indoor instruction models of bailing test in situ, belong to geotechnical engineering experimental teaching model of cobalt technology
Field.
Background technology
In geotechnical engineering investigation, bailing test is to find out that the stratum permeability of building yard and watery, measurement are related
The permeability test in situ of hydrogeological parameter often uses the Pumping Test for Steady Flow of single hole.The experiment drills through one in engineering site
The wellhole for determining diameter and depth is restored during being drawn water by observation with water level using the confluence ponding in pumping equipment extraction aperture
The contents such as water level, flow and the water temperature of period can be calculated the soil body using the Dupuit theories answer of spatial radial stream and ooze
Saturating coefficient.
Bailing test is civil engineering, Geological Engineering and hydraulic engineering etc. as a kind of rock-soil engineering in-situ measuring technology
The student of profession needs the professional skill for learning and grasping, and needs to carry out imparting knowledge to students in relevant laboratory to teach.But it is teaching
Directly carry out bailing test in situ in, many difficulties can be faced.Firstly, it is necessary to find suitable field place；Secondly, to have
Time enough is so as to round-trip scene and is tested.And these difficulties are not easy to be solved, especially when towards multiple professions
When multiple classes, so teaching of the civil engineering specialty of most schools all without carrying out bailing test.Therefore there is an urgent need for a kind of pumpings in situ
The indoor instruction model of water test solves above-mentioned technical problem.
Invention content
It can carry out bailing test teaching the technical problem to be solved by the invention is to provide one kind and overcome place
And the indoor instruction model of the bailing test in situ of the conditions such as time limitation.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of indoor instruction model of original position bailing test, including the suction eye, soil sample groove, the water that are arranged concentrically from inside to outside
Position slot and overflow collection slot, the suction eye is identical as the height of soil sample groove, and geotextiles are glued on the inner wall of the soil sample groove,
The water inlet of drinking-water pipe is set in the suction eye, and the water outlet of the drinking-water pipe is set in the overflow collection slot, institute
The osculum for being provided on overflow collection slot and being connected with sewer is stated, valve, the water level slot are provided on the drinking-water pipe
Height be less than the soil sample groove height；It is both provided with several permeable holes on the suction eye and the side wall of soil sample groove.
The top of the soil sample groove and water level slot is reinforced by reinforcement elements.
The reinforcement elements include angle steel hoop.
The suction eye, soil sample groove, the material of water level slot and overflow collection slot are transparent organic glass.
The water level slot is supplied water by tap.
Fine sand is filled in the soil sample groove.
The soil sample groove, water level slot and overflow collection slot are square groove body, and the suction eye is round groove body.
Bailing test is critically important professional knowledge and technical ability, but due to the limitation of the conditions such as place and time, it is difficult to
Carried out in teaching.Therefore it needs to find the method that can carry out bailing test teaching and difficulties associated, this is this
The technical problems to be solved by the invention.
The principle of the present invention：Filling experiment soil sample is to simulate the live soil body in soil sample groove；Four walls of soil sample groove are permeable
Plate is fed by water level slot moisturizing with the flow of the live semi-infinite half-space of simulation；It is drilled with preset suction eye simulation scene,
The water in live pumping equipment extraction soil layer is simulated with drinking-water pipe；Water level and flow in different moments suction eye are recorded, is waited until
In hole after stable level, show that seepage flow reaches condition of steady flow, infiltration can be calculated using water level in hole at this time and flow
Coefficient.
The invention has the advantages that using this model, the simulated experiment of bailing test in situ can be carried out indoors, both
The teaching that can carry out relevant knowledge allows student to recognize bailing test in situ there are one relatively intuitive, while can also avoid
Directly carry out all many condition restricted problem of field test.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the structural schematic diagram of soil sample groove sidewall in the present invention；
Fig. 4 is the structural schematic diagram of suction eye in the present invention.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
As shown in Figure 1 to 4, a kind of indoor instruction model of bailing test in situ, including soil sample groove 1, water level slot 2, overflow
Flow collecting tank 3, suction eye 4, drinking-water pipe 5, valve 6, osculum 7, angle steel hoop 8, geotextiles 9.The soil sample groove 1,2 and of water level slot
Overflow collection slot 3 is with central square groove body；The suction eye 4 is fixed at the center of soil sample groove 1, and and soil sample
1 height of slot is identical.The soil sample groove 1, water level slot 2, overflow collection slot 3 and suction eye 4 are clear perspex material.
The top of the soil sample groove 1 and water level slot 2 is reinforced with angle steel hoop 8.
The organic glass of the soil sample groove 1 and suction eye 4 is equipped with several permeable holes.
The geotextiles 9 are tightly attached to the madial wall of soil sample groove 1 and the lateral wall of suction eye 4, to prevent soil sample particle
It is lost in from permeable hole.
The water level slot 2 is directly supplied water by tap, and keeps water level in the top surface of water level slot 2.
The water that the drinking-water pipe 5 extracts in suction eye 4 is discharged into overflow collection slot 3.
Water in the overflow collection slot 3 is discharged into sewer by osculum 7.
The inner wall width of the soil sample groove 1, water level slot 2 and overflow collection slot 3 is respectively 50cm, 62cm and 74cm, height
Respectively 40cm, 35cm, 8cm.
The inner diameter of suction eye 4 is 3.4cm, is highly 50cm.
The soil sample of the present invention is a kind of fine sand.
This modeling be dive under water complete penetration of well single hole Pumping Test for Steady Flow.
Specific use process is as follows for model of the present invention：
1) preparation model as shown in Figure 1.
2) experiment fine sand is successively inserted in soil sample groove 1, when filling pays attention to successively being compacted.
3) water pipe being connected on tap is put into water level slot 2, opens tap, the water filling into water level slot 2, flow
Suction eye 4 can be flowed by the permeable hole of 1 surrounding side wall of soil sample groove and through soil sample.
4) when in water level slot 2 water level reach top surface, and have water spilling after, with steel ruler measure suction eye 4 in water level, directly
It is risen to and 2 same water level of water level slot to it.
5) suction eye 4 is inserted into 5 one end of drinking-water pipe with valve 6, opens valve 6, suction ball is pinched into flat rear be inserted into and is drawn water
The other end of pipe 5 unclamps suction ball, and due to siphon principle, the water in suction eye 4 can be flowed out from drinking-water pipe 5 automatically.Close valve
6, it allows and is full of water in drinking-water pipe 5.
6) it is a little to open valve 6, allows water to flow into overflow collection slot 3 through drinking-water pipe 5 from suction eye 4, and after beginning of drawing water
30s, 1min, 2min, 3min, 4min, 5min, 10min, 15min, 20min, 25min, 30min, 40min, 50min,
60min, 80min, 100min, 120min observe the water level in suction eye 4, later primary every 30min observations, until experiment knot
Beam.
7) stable level (stability criterion in suction eye 4 is waited until：The difference of continuous 3 water level observations is no more than 2mm)
Afterwards, show that seepage flow has reached condition of steady flow, collect the water that drinking-water pipe 5 flows out with graduated cylinder, manual time-keeping, about 20s is used in combination
Afterwards, the volume of water and specific time are read in graduated cylinder, flow Q is calculated.
8) it repeats step 6) and 7), carries out the experiment of no less than 3 times stable drawdowns in total, record corresponding in suction eye 4
Fixed level and the flow that draws water utilize formula (1) calculation permeability coefficient.
In formula, Q is flow, unit cm3/s；swFor drawdown, unit cm；H0For initial aqueous layer thickness, unit
For cm；rwFor the inner wall radius of suction eye 4, unit cm；R is the radius of influence of phreatic well, can be by formulaEstimate
It calculates, unit cm.
9) it is measured with temperature and reads experiment water temperature, and temperature correction is carried out to the infiltration coefficient of calculating.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of indoor instruction model of original position bailing test, it is characterised in that：Including the suction eye being arranged concentrically from inside to outside
（4）, soil sample groove（1）, water level slot（2）With overflow collection slot（3）, the suction eye（4）With soil sample groove（1）Height it is identical, institute
State soil sample groove（1）Inner wall on be glued with geotextiles（9）, drinking-water pipe（5）Water inlet be set to the suction eye（4）It is interior, institute
State drinking-water pipe（5）Water outlet be set to the overflow collection slot（3）It is interior, the overflow collection slot（3）On be provided with and lower water
The osculum that road is connected（7）, the drinking-water pipe（5）On be provided with valve（6）, the water level slot（2）Height be less than it is described
Soil sample groove（1）Height；The suction eye（4）And soil sample groove（1）Side wall on be both provided with several permeable holes.
2. a kind of indoor instruction model of bailing test in situ according to claim 1, it is characterised in that：The soil sample groove
（1）With water level slot（2）Top reinforced by reinforcement elements.
3. a kind of indoor instruction model of bailing test in situ according to claim 2, it is characterised in that：The reinforcing is single
Member includes angle steel hoop（8）.
4. a kind of indoor instruction model of bailing test in situ according to claim 1, it is characterised in that：The suction eye
（4）, soil sample groove（1）, water level slot（2）With overflow collection slot（3）Material be transparent organic glass.
5. a kind of indoor instruction model of bailing test in situ according to claim 1, it is characterised in that：The water level slot
（2）It is supplied water by tap.
6. a kind of indoor instruction model of bailing test in situ according to claim 1, it is characterised in that：The soil sample groove
（1）It is interior to be filled with fine sand.
7. a kind of indoor instruction model of bailing test in situ according to claim 1, it is characterised in that：The soil sample groove
（1）, water level slot（2）With overflow collection slot（3）It is square groove body, the suction eye（4）For round groove body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810418077.9A CN108597353A (en) | 2018-05-04 | 2018-05-04 | A kind of indoor instruction model of original position bailing test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810418077.9A CN108597353A (en) | 2018-05-04 | 2018-05-04 | A kind of indoor instruction model of original position bailing test |
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| Publication Number | Publication Date |
|---|---|
| CN108597353A true CN108597353A (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810418077.9A Pending CN108597353A (en) | 2018-05-04 | 2018-05-04 | A kind of indoor instruction model of original position bailing test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110390867A (en) * | 2019-07-23 | 2019-10-29 | 甘肃工业职业技术学院 | A kind of teaching pumped well model |
Citations (5)
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|---|---|---|---|---|
| DE10360704A1 (en) * | 2003-10-07 | 2005-05-19 | Brandenburgische Technische Universität Cottbus | Treatment of ground water flows, e.g. from lignite mines, uses infiltration wells across the ground water flow with dosing units and control filters to add neutralizing agents and reagents to stabilize and improve the water quality |
| CN1877659A (en) * | 2006-07-04 | 2006-12-13 | 成都理工大学 | Pumping simulator for completely penetrating well under water |
| CN204315152U (en) * | 2014-11-18 | 2015-05-06 | 成都理工大学 | Phreatic well flood-pot-test device |
| CN105243935A (en) * | 2015-11-17 | 2016-01-13 | 安徽理工大学 | Testing device for simulating and verifying motion of underground water toward well near boundary |
| CN208796558U (en) * | 2018-05-04 | 2019-04-26 | 河海大学 | A kind of indoor instruction model of original position bailing test |
-
2018
- 2018-05-04 CN CN201810418077.9A patent/CN108597353A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10360704A1 (en) * | 2003-10-07 | 2005-05-19 | Brandenburgische Technische Universität Cottbus | Treatment of ground water flows, e.g. from lignite mines, uses infiltration wells across the ground water flow with dosing units and control filters to add neutralizing agents and reagents to stabilize and improve the water quality |
| CN1877659A (en) * | 2006-07-04 | 2006-12-13 | 成都理工大学 | Pumping simulator for completely penetrating well under water |
| CN204315152U (en) * | 2014-11-18 | 2015-05-06 | 成都理工大学 | Phreatic well flood-pot-test device |
| CN105243935A (en) * | 2015-11-17 | 2016-01-13 | 安徽理工大学 | Testing device for simulating and verifying motion of underground water toward well near boundary |
| CN208796558U (en) * | 2018-05-04 | 2019-04-26 | 河海大学 | A kind of indoor instruction model of original position bailing test |
Non-Patent Citations (1)
| Title |
|---|
| 高宗军: "可实现三维水位观测的抽水试验实验教学装置及教学效果", 《中国地质教育》, no. 1, pages 70 - 75 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110390867A (en) * | 2019-07-23 | 2019-10-29 | 甘肃工业职业技术学院 | A kind of teaching pumped well model |
| CN110390867B (en) * | 2019-07-23 | 2021-06-01 | 甘肃工业职业技术学院 | Pumping well model for teaching |
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