CN106568697A - Indoor model test device for testing permeability of geomembrane and operation method - Google Patents
Indoor model test device for testing permeability of geomembrane and operation method Download PDFInfo
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- CN106568697A CN106568697A CN201610954299.3A CN201610954299A CN106568697A CN 106568697 A CN106568697 A CN 106568697A CN 201610954299 A CN201610954299 A CN 201610954299A CN 106568697 A CN106568697 A CN 106568697A
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- geomembrane
- test device
- indoor model
- model test
- infiltrative
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/086—Investigating permeability, pore-volume, or surface area of porous materials of films, membranes or pellicules
Abstract
The invention relates to an indoor model test device for testing permeability of a geomembrane and an operation method, the indoor model test device includes a visual monitoring box system, a boundary condition regulation system, a geomembrane fixed adhesive system, a comprehensive measurement system and an information feedback analysis system. A visual monitoring box is used as a main body, toughened glass is used as a material, boundary conditions are controlled by a variable water level water box room, and the geomembrane fixed adhesive system comprising a geomembrane, a water permeation board, a cementing agent, a plugging layer and then like is used for bonding and fixing of the geomembrane. The boundary conditions of working states and paving conditions of the geomembrane can be studied by the indoor model test device for concrete design, the indoor model test device can be used for full-range and multi-level monitoring of pore water osmotic pressure, soil settlement, seepage flow, seepage time, permeability area, water level difference and seepage path length, permeability of a geotextile material can be evaluated and measured, compared with the previous, the indoor model test device is more simple, practical and comprehensive, and has obvious advantages.
Description
Technical field
The present invention relates to a kind of be used to test the infiltrative indoor model test device of geomembrane and method of operating.
Background technology
Earth and rockfill dam is frequently with clay, concrete, geosynthetics etc. as impervious material.Wherein, because barrier performance is high,
Adaptive deformation ability is strong, speed of application is fast, process is simple, low cost the features such as, geomembrane is widely applied.Geomembrane is
Non- pore media, penetration mechanism of the existing research to geomembrane under hydraulic gradient not yet recognizes completely.Geomembrane itself oozes
Thoroughly coefficient is generally 1 × 10-10M/s～1 × 10-15M/s, but transport as impervious barrier laying construction and under different engineering specifications
During row, because geomembrane is directly overlapped or bond quality is bad, the product that dispatches from the factory is defective, punctured by sharp object in bed course earth material
The presence of situation, the actual infiltration coefficient of geomembrane can be greatly affected.Therefore, different type, the geomembrane of thickness are studied
Comprehensive permeability under Different Strata condition, different head conditions, is very necessary to instructing Practical Project.
The content of the invention
The present invention is to overcome the shortcomings of above-mentioned technology, there is provided one kind can test the infiltrative indoor model test of geomembrane
Device and method of operating.
For achieving the above object, the present invention adopts following technical proposals：
One kind tests the infiltrative indoor model test device of geomembrane, including one visualizes square monitoring case, in institute
Be fitted with the monitoring case stated two it is being parallel to each other and for fixing and overlapping the porous disc of geomembrane, two porous discs and prison
Rectangle soil sample case is formed between the wall of measuring tank side, described rectangle soil sample case is used to contain soil sample, places in described soil sample and surveys
The various sensors of amount soil sample parameter, described various sensors are connected with information analysis system；Described rectangle soil sample case
To become level water tank room, described change level water tank room is connected with outside water supply installation, and described outside water supply installation connects for both sides
The turnover water yield that flow instrument control becomes level water tank room is connect, real working condition is simulated.
Further, one layer of primary backing is overlapped in the inner side of described porous disc, is passed through on the inside of described primary backing
Cementing agent pastes one layer of geomembrane.
Further, described geomembrane is sealed with the longitudinal seam of porous disc using the packing cloth for scribbling adhesive
It is stifled, formed and fixed using securing member at plugged zone, and longitudinal seam；Described transverse joint is using extrusion REPAIR WELDING.
Further, the pore water osmotic pressure that described sensor is included for measuring inside soil body osmotic pressure is sensed
Device, for measuring the displacement transducer of surface displacement.
Further, described pore water osmolarity sensor is arranged in inside different soil, and displacement transducer is arranged in
Surface of stratum.
Further, the outside of the described square monitoring case of visualization is provided with scale value, for observing the change of seepage discharge,
The regulation and control of head difference are carried out at any time.
Further, described porous disc is apertured grills glass.
Further, described information analysis system includes computer and display, described sensor and computer phase
Even, described computer carries out data analysis and feedback processing；And the data for processing are shown by display.
The infiltrative method of operating of geomembrane, including the following steps are tested using said apparatus：
1) primary backing, brushing cementing agent, by geomembrane successively paving on cementing agent are wound on porous disc；
2) smear adhesive using packing cloth to block geomembrane with the longitudinal seam of porous disc, longitudinal seam is adopted
Securing member is fixed, and transverse joint is using extrusion REPAIR WELDING；
3) needed for according to test, the porous disc after bonding is inserted in the square monitoring case of visualization, two porous discs with
Rectangle soil sample case is formed between the wall of monitoring case side；The both sides of described rectangle soil sample case will become water level water to become level water tank room
Chamber is connected with outside water supply installation；
4) needed to arrange soil layer in rectangle soil sample case according to concrete operating mode, cloth pore water is buried in soil layer setting up procedure and is oozed
Saturating pressure sensor and displacement transducer；
5) pore water osmolarity sensor and displacement transducer are connected with information analysis system；
6) flow control valve of water supply installation is adjusted, the water level of water tank room is controlled, the perimeter strip determined by operating mode is set
Part；
7) at regular intervals, the change of each item data of computer recording and chart is formed, analyzes result of the test.
Can specifically be arranged for individual layer geomembrane, composite geo-membrane according to different operating modes, repeat step 1) -5), control
Flow processed controls situation, repeat 6) -7), according to step 7) monitoring obtain seepage discharge, duration, infiltrating area, water-head, ooze
Electrical path length, is calculated the infiltration coefficient of geomembrane, and the change of the hole osmotic pressure for monitoring and soil body sedimentation can intuitively embody
It is infiltrative excellent, to need to provide help to concrete engineering.
Described geomembrane is divided into multistage carries out successively paving, and adjacent both ends geomembrane paving mode is：Rear end geomembrane
Leading portion is coated on the end outside of leading portion geomembrane.
The present invention have studied a kind of infiltrative indoor model test device of test geomembrane and method of operating, solve by
Cause the actual infiltration coefficient of geomembrane that larger problem is differed with product parameters in laying construction error, product self-defect etc.,
Can test to different type, the comprehensive permeability of the geomembrane under Different Strata condition, different head condition of thickness, it is right to realize
The infiltrative assessment of earth working material, more simply, more practicality, comprehensive is with the obvious advantage.Compared with forefathers study, the present invention
Device has advantages below：
1) visualizing monitor case system is intuitively observed simulation process, easy to assembly, economical and practical；
2) device is poor using flow valve controlling water level, makes boundary condition controllable, and adaptive is strong, easy to operate；
3) device can be according to concrete engineering situation, to the concrete material of geomembrane, the number of plies and actual bonding, overlap joint and weldering
The situation of connecing is configured, and more truly reappears concrete operating mode, simulates geomembrane anti-seepage effect in practical situations both；
4) device carries out data acquisition using multiple sensors and measuring instrument, accomplishes real-time comprehensive monitoring, information analysis
System is for accurate data analysis and timely feedback processing provides condition；
Description of the drawings
Fig. 1 is experimental rig schematic diagram of the present invention；
Fig. 2 is experimental rig two dimension front view；
Fig. 3 is apertured grills glass porous disc schematic diagram；
Fig. 4 is that geomembrane fixes bonding system detail drawing；
Wherein, 1, square monitoring case is visualized；2nd, porous disc；3rd, level water tank room is become；4th, outside water supply installation；5th, geotechnique
Film；6th, cementing agent；7th, drainage channel；8th, flow instrument；9th, pore water osmolarity sensor；10th, displacement transducer；11st, computer；
12nd, display；13rd, transmission line；14th, primary backing；15th, packing cloth.
Specific embodiment
Below in conjunction with the accompanying drawings, specific implementation of the patent mode is further described.
As Figure 1-4, the infiltrative indoor model test device of geomembrane is tested, including one visualizes square monitoring
Case, be fitted with described monitoring case two it is being parallel to each other and for fixing and overlapping the porous disc of geomembrane, two are thoroughly
Rectangle soil sample case is formed between water plate and monitoring case side wall, described rectangle soil sample case is used to contain soil sample, in described soil sample
The interior various sensors for placing measurement soil sample parameter, described various sensors are connected with information analysis system；Described rectangle
To become level water tank room, described change level water tank room is connected with outside water supply installation, described outside confession for the both sides of soil sample case
Water installations connection traffic instrument control system becomes the turnover water yield of level water tank room, simulates real working condition.
Specifically following system can be divided into according to function：
Visualizing monitor case system, main body is the square monitoring case 1 of visualization, and material is safety glass, nested two on base
The individual porous disc 2 for fixing and overlapping geomembrane, two porous discs 2 and the square prison of the visualization between two porous discs
The side wall of measuring tank 1 is collectively forming a rectangle soil sample case, and corresponding multiple sensors and measuring instrument are placed on the rectangle soil sample case
It is interior.
Visualizing monitor case system is a square monitoring case 1 equipped with safety glass, the long 80cm of soil sample case, wide 60cm,
High 50cm.
There is readable scale outside monitoring case, for observing the change of seepage discharge.
Border regulator control system includes the change level water tank room 3 around soil sample case, high by the controlling water level of outside water supply installation 4
Low, the connection traffic instrument control system turnover water yield simulates real working condition.Meanwhile, there is readable scale outside monitoring case, for observing seepage discharge
Change, the regulation and control of head difference are carried out at any time.
Geomembrane fixes bonding system：The system is made up of porous disc 2, geomembrane 5, cementing agent 6, plugged zone etc., is responsible for
Fixed and overlap joint earth working material；
Porous disc 2 is apertured grills glass, and primary backing 14, and brushing cementing agent 6 are wound on plate, and geomembrane 4 is coated on
On cementing agent 5.Specifically, geomembrane is divided into multistage carries out successively paving, and adjacent both ends geomembrane paving mode is：Rear end geotechnique
Film leading portion is coated on the end outside of leading portion geomembrane.
Primary backing 14 is glass fabric, and adhesive 5 is mixed by epoxy resin and epoxy curing agent and made.
Geomembrane is blocked with the longitudinal seam of porous disc using the packing cloth 15 for scribbling cementing agent 6, forms plugged zone,
And fixed using securing member at longitudinal seam；Described transverse joint is using extrusion REPAIR WELDING.
Comprehensive monitor system is by flow instrument 8, pore water osmolarity sensor 9, displacement transducer 10, spiral micrometer, quarter
Degree chi, timer composition, to the soil body monitoring of Comprehensive is carried out；
Comprehensive monitor system is made up of various measuring instruments, and the monitoring of Comprehensive is carried out to the soil body, and such as flow instrument 8 is used for
Control water tank room water level height, pore water osmolarity sensor 9 is used to measure inside soil body osmotic pressure, and displacement transducer 10 is used for
Measurement surface displacement, spiral micrometer is used to measure geotechnological film thickness, and rule is used to measure both sides cistern water level height, geotechnique
Film participates in the length and width of infiltrating area, and timer is used to record the duration of flow event.
Pore water osmolarity sensor 9 is arranged in inside different soil, and displacement transducer 10 is arranged in surface of stratum.
Border regulator control system is made up of the change level water tank room 3 of monitoring case both sides, and outside water supply installation 4 is water pump, is connected
Flow instrument 8, the control turnover water yield, that is, control cistern water level height, and water tank room bottom is provided with drainage channel 7.
Information analysis system is made up of computer 11, display 12, transmission line 13, pore water osmolarity sensor 9 and position
Displacement sensor is connected by transmission line 13 with computer 11, and described computer 11 carries out data analysis and feedback processing；And it is logical
Cross 12 pairs of data for processing of display to show, complete the feedback processing of package unit.
Monitoring seepage action of ground water, sedimentation are realized using said apparatus, method of operating includes the following steps：
1) primary backing 15, brushing cementing agent 6, by geomembrane 5 successively paving on cementing agent 6 are wound on porous disc 2.
2) smear cementing agent 6 using packing cloth 16 to block geomembrane 5 with the longitudinal seam of porous disc 2, longitudinally connect
Seam is fixed using securing member, and transverse joint is using extrusion REPAIR WELDING.
3) it is needed for according to test, the porous disc 2 after monitoring case 1 and bonding is nested up；Porous disc after bonding is inserted
Enter to visualizing in square monitoring case, rectangle soil sample case is formed between two porous discs and monitoring case side wall；Described rectangle soil
The both sides of sample case will become level water tank room and be connected with outside water supply installation to become level water tank room；
4) needed to arrange soil layer according to concrete operating mode, the He of cloth hole water penetration pressure sensor 9 is buried in soil layer setting up procedure
Displacement transducer 10；
5) each component connection of border regulator control system, comprehensive monitor system and information analysis system is finished；
6) flow instrument 8 is adjusted, controls the water level of water tank room 3, set the boundary condition determined by operating mode；
7) at regular intervals, computer 11 records the change of each item data and forms chart, analyzes result of the test.
Can specifically be arranged for individual layer geomembrane, composite geo-membrane according to different operating modes, be repeated (1)-(5), control
Flow controls situation, repeats (6)-(7), the seepage discharge that obtains according to step (7) monitoring, duration, infiltrating area, water-head, oozes
Electrical path length, is calculated the infiltration coefficient of geomembrane, and the change of the hole osmotic pressure for monitoring and soil body sedimentation can intuitively embody
It is infiltrative excellent, to need to provide help to concrete engineering.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (10)
1. it is a kind of to test the infiltrative indoor model test device of geomembrane, it is characterised in that to visualize square prison including one
Measuring tank, be fitted with described monitoring case two it is being parallel to each other and for fixing and overlapping the porous disc of geomembrane, two
Rectangle soil sample case is formed between porous disc and monitoring case side wall, described rectangle soil sample case is used to contain soil sample, in described soil
The various sensors of measurement soil sample parameter are placed in sample, described various sensors are connected with information analysis system；Described square
To become level water tank room, described change level water tank room is connected with outside water supply installation, described outside for the both sides of shape soil sample case
Water supply installation connection traffic instrument control system becomes the turnover water yield of level water tank room, simulates real working condition.
2. it is as claimed in claim 1 to test the infiltrative indoor model test device of geomembrane, it is characterised in that described
The inner side of porous disc overlaps one layer of primary backing, and one layer of geomembrane is pasted by cementing agent in the inner side of described primary backing.
3. it is as claimed in claim 2 to test the infiltrative indoor model test device of geomembrane, it is characterised in that described soil
Work film is blocked with the longitudinal seam of porous disc using the packing cloth for scribbling adhesive, forms plugged zone, and longitudinal seam
Place is fixed using securing member；Geomembrane adopts extrusion REPAIR WELDING with the transverse joint of porous disc.
4. it is as claimed in claim 1 to test the infiltrative indoor model test device of geomembrane, it is characterised in that described biography
Sensor includes the pore water osmolarity sensor for measuring inside soil body osmotic pressure, and the displacement for measuring surface displacement is passed
Sensor.
5. it is as claimed in claim 4 to test the infiltrative indoor model test device of geomembrane, it is characterised in that described hole
Gap water penetration pressure sensor is arranged in inside different soil, and displacement transducer is arranged in surface of stratum.
6. it is as claimed in claim 1 to test the infiltrative indoor model test device of geomembrane, it is characterised in that described can
Outside depending on changing square monitoring case is provided with scale value, for observing the change of seepage discharge, the regulation and control of head difference is carried out at any time.
7. it is as claimed in claim 1 to test the infiltrative indoor model test device of geomembrane, it is characterised in that described is saturating
Water plate is apertured grills glass.
8. it is as claimed in claim 1 to test the infiltrative indoor model test device of geomembrane, it is characterised in that described letter
Breath analysis system includes computer and display, and described sensor is connected with computer, and described computer carries out data point
Analysis and feedback processing；And the data for processing are shown by display.
9. the infiltrative indoor model test device test geomembrane infiltration of test geomembrane as described in claim 1-7 is arbitrary
The method of operating of property, it is characterised in that including the following steps：
1) primary backing, brushing cementing agent, by geomembrane successively paving on cementing agent are wound on porous disc；
2) smear adhesive using packing cloth to block geomembrane with the longitudinal seam of porous disc, longitudinal seam is using fastening
Part is fixed, and transverse joint is using extrusion REPAIR WELDING；
3) needed for according to test, the porous disc after bonding is inserted in the square monitoring case of visualization, two porous discs and monitoring
Rectangle soil sample case is formed between the wall of case side；The both sides of described rectangle soil sample case will become level water tank room to become level water tank room
It is connected with outside water supply installation；
4) needed to arrange soil layer in rectangle soil sample case according to concrete operating mode, cloth hole water penetration pressure is buried in soil layer setting up procedure
Sensor and displacement transducer；
5) pore water osmolarity sensor and displacement transducer are connected with information analysis system；
6) flow control valve of water supply installation is adjusted, the water level of water tank room is controlled, the boundary condition determined by operating mode is set；
7) at regular intervals, the change of each item data of computer recording and chart is formed, analyzes result of the test.
10. the infiltrative indoor model test device test geomembrane of test geomembrane as claimed in claim 9 is infiltrative
Method of operating, it is characterised in that can specifically be arranged for individual layer geomembrane, composite geo-membrane according to different operating modes, be repeated
Step 1) -5), control flow control situation, repeat 6) -7), according to step 7) the monitoring seepage discharge, duration, the permeable face that obtain
Product, water-head, seepage paths length, are calculated the infiltration coefficient of geomembrane.
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| CN201610954299.3A CN106568697B (en) | 2016-11-03 | 2016-11-03 | A kind of infiltrative indoor model test device of test geomembrane and operating method |
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| CN201610954299.3A CN106568697B (en) | 2016-11-03 | 2016-11-03 | A kind of infiltrative indoor model test device of test geomembrane and operating method |
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| CN110186829A (en) * | 2019-05-31 | 2019-08-30 | 贵州大学 | A kind of physical simulation experiment device of seepage deformation monitoring and permeability parameters solution |
| CN111650107A (en) * | 2020-06-08 | 2020-09-11 | 上海大学 | Multifunctional soil body infiltration and dirt intercepting capability test device |
| CN113866066A (en) * | 2021-10-26 | 2021-12-31 | 贵州乌江水电开发有限责任公司东风发电厂 | Three-dimensional visual hydropower station underground powerhouse hole seepage monitoring method and system |
| CN114813498A (en) * | 2022-03-04 | 2022-07-29 | 东南大学 | Testing device and testing method for gas-liquid seepage quantity of lap joint of bentonite waterproof blanket |
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| CN110186829A (en) * | 2019-05-31 | 2019-08-30 | 贵州大学 | A kind of physical simulation experiment device of seepage deformation monitoring and permeability parameters solution |
| CN111650107A (en) * | 2020-06-08 | 2020-09-11 | 上海大学 | Multifunctional soil body infiltration and dirt intercepting capability test device |
| CN113866066A (en) * | 2021-10-26 | 2021-12-31 | 贵州乌江水电开发有限责任公司东风发电厂 | Three-dimensional visual hydropower station underground powerhouse hole seepage monitoring method and system |
| CN113866066B (en) * | 2021-10-26 | 2023-11-03 | 贵州乌江水电开发有限责任公司东风发电厂 | Three-dimensional visual hydropower station underground powerhouse chamber water seepage monitoring method and system |
| CN114813498A (en) * | 2022-03-04 | 2022-07-29 | 东南大学 | Testing device and testing method for gas-liquid seepage quantity of lap joint of bentonite waterproof blanket |
| CN114813498B (en) * | 2022-03-04 | 2023-11-14 | 东南大学 | Testing device and testing method for gas-liquid seepage rate at joint of bentonite waterproof blanket |
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|---|---|
| CN106568697B (en) | 2019-06-14 |
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