CN202024949U - Variable-pressure constant head permeability test device - Google Patents
Variable-pressure constant head permeability test device Download PDFInfo
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- CN202024949U CN202024949U CN2011200242676U CN201120024267U CN202024949U CN 202024949 U CN202024949 U CN 202024949U CN 2011200242676 U CN2011200242676 U CN 2011200242676U CN 201120024267 U CN201120024267 U CN 201120024267U CN 202024949 U CN202024949 U CN 202024949U
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Abstract
The utility model discloses a variable-pressure constant head permeability test device, which comprises a test specimen pipe, a metal hole plate, a pressure test pipe, a piston water tank, a metal framework, a right support frame, a spring, a water tank, a water storage groove, a lower hose, a miniature water pumping pump, an electronic pressure switch, an upper hose, a water top clamp, a water stop switch and a piston, wherein the test specimen pipe adopts a transparent organic glass pipe, the piston water groove is connected with the test specimen pipe, the rod end of the piston is connected with a metal framework, the water tank and the water storage groove are connected through a hose, a certain height difference is formed by the two water grooves, the water is pumped from the water tank to the water storage groove through the miniature water pumping pump, and the electronic pressure switch is arranged in the water storage groove and is communicated with the water tank through the upper hose. The variable-pressure constant head permeability test device can automatically control the inward pumping and outward flowing of the water, and the damage phenomenon of upper and lower soil body perturbation caused by head change can be clearly observed, so the indoor test result of tested soil samples can more accurately represent the actual damage condition of the earth surface soil body under the underground water perturbation.
Description
Technical field
The utility model relates to a kind of infiltration experiment device, particularly a kind of transformation type constant head permeability test device, and this device also has the underground water of finishing circulation disturbance to the sex simulation test of soil stabilization except finishing conventional permeability test.
Background technology
Nearly 2 years, geologic hazard takes place frequently, " karst topography " phenomenon (being surface subsidence) constantly appears in southwestern various places, have a strong impact on people's ordinary production life and traffic safety order, therefore the surface subsidence problem also more and more is subjected to people's attention, in numerous reasons that cause surface subsidence, more very important studying a question when the underground water disturbance becomes people and studies the influence of soil body stability, and existing conventional darcy test unit (comprising varying head and constant head test device) is because the limitation of its structure, be not easy to make soil sample to reach destruction, thereby the lab simulation of above-mentioned correlated phenomena can't be carried out smoothly.In addition, in existing same device, much adopt opaque coupon, can not observe experimental result intuitively.In addition, it is bigger that existing experimental provision is finished when test required human and material resources, and waste more, the financial cost height.
Summary of the invention
The purpose of this utility model is to provide a kind of transformation type constant head permeability test device, this device can simulated groundwater up and down during disturbance to the extruding of last overburden layer with inhale the erosion process.
For achieving the above object, the solution that the utility model adopts is: this infiltration experiment device comprises coupon, metal perforated plate, piezometric tube, the piston tank, metal framework, spring, water tank and sealing switch, the top in coupon left side is provided with the spillway hole that Open Side Down, the bottom is provided with the infiltration hole that Open Side Down, metal perforated plate lies against in the coupon, piezometric tube is installed on the right side of coupon by the sealing switch, its opening upwards, water tank places metal framework, metal framework is fixed by the spring suspension that is connected in its upper end, the piston tank links to each other with coupon by the sealing switch, its tailpiece of the piston rod is connected with metal framework, in addition, this device has also increased right support, aqua storage tank, bottom hose, miniature suction pump, electron pressure switch and top hose, right support is fixed in the upper right side of metal framework, aqua storage tank places on the right support, miniature suction pump is connected with water tank, the two ends of bottom hose link to each other with miniature suction pump with aqua storage tank respectively, electron pressure switch is installed in the aqua storage tank, and is communicated with water tank by top hose.
The said sample pipe adopts the transparent organic glass pipe.
Above-mentioned metal perforated plate places 30CM place, top, coupon bottom.
The utlity model has following advantage:
(1), and make its conversion of between two water tanks, flowing by the electron pressure switch controlled water flow owing to adopted two reserve tanks, water pump and electron pressure switchs, thereby but the disturbance up and down of simulated groundwater;
(2), can see intuitively, clearly that therefore soil sample is out of shape the phenomenon of destruction under the underground water disturbance owing to adopted the transparent sample pipe;
(3) be used for the water reusable edible of transformation in the test, thereby but the conserve water resource;
(4) device is simple, and has realized the robotization of process, thereby can save human resources greatly, reduces cost.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: the 1-coupon 2-metal perforated plate 3-spillway hole 4-hole of seeping water
5-piezometric tube 6-piston tank 7-metal framework 8-right support
9-spring 10-water tank 11-aqua storage tank 12-bottom hose
The miniature suction pump 14-of 13-electron pressure switch 15-top hose
16-tongs 17-sealing switch 18-piston
Embodiment
As shown in drawings, the utility model is made up of coupon 1, metal perforated plate 2, piezometric tube 5, piston tank 6, metal framework 7, right support 8, spring 9, water tank 10, aqua storage tank 11, bottom hose 12, miniature suction pump 13, electron pressure switch 14, top hose 15, tongs 16, sealing switch 17 and piston 18, be out of shape under the underground water disturbance in order intuitively, clearly to see soil sample, the phenomenon of destroying, coupon 1 adopts transparent plexi-glass tubular.Metal perforated plate 2 is placed horizontally in the coupon 1, and 30CM place, top bottom being positioned at, the top in coupon 1 left side is provided with the spillway hole 3 that Open Side Down, the bottom is provided with the infiltration hole 4 that Open Side Down, piezometric tube 5 is installed on the right side of coupon 1 by sealing switch 17, its opening upwards, water tank 10 places metal framework 7, metal framework 7 hangs fixing by the spring 9 that is connected in its upper end, piston tank 6 links to each other with coupon 1 by sealing switch 17, the rod end of its piston 18 is connected with metal framework 7, right support 8 is fixed in the upper right side of metal framework 7, aqua storage tank 11 places on the right support 8, miniature suction pump 13 is connected with water tank 10, and water is extracted into the aqua storage tank 11 from water tank 10, and the two ends of bottom hose 12 link to each other with miniature suction pump 13 with aqua storage tank 11 respectively, electron pressure switch 14 is installed in the aqua storage tank 11, and is communicated with water tank 10 by top hose 15.When the water pressure in the aqua storage tank 11 reached the higher limit of setting, the valve of pressure switch 14 was opened automatically, and water all is back to water tank 10, and after pressure reduced, the valve of pressure switch 14 was closed again.
The principle of work of the present utility model and the course of work are: during test, install the each several part device earlier, put into soil sample in coupon 1, good metal perforated plate 2 of cloth and bottom gravel bed make to be full of water in the gravel bed, but do not cover metal perforated plate 2, in piston tank 6, water is filled it up with the good piston 18 of cloth then.The water that then in water tank 10, at the uniform velocity adds certain volume, because the increasing of water tank 10 gravity, framework 7 begins to sink, spring 9 is stretched gradually, top integral body is exerted pressure to piston 18, piston 18 promptly pushes the water in the piston tank 6, makes in the permeability apparatus water in the gravel bed enter the earthing sample and it is pushed.At this moment, open miniature suction pump 13, adjust its unit interval pump-out, with water from water tank 10 suction to aqua storage tank 11, the integral body of water tank 10 deadweight slowly reduces, spring 9 shrinks, piston 18 beginnings are upwards lifted rise, water in the piston tank 6 is formed pull of vacuum, and the water in the gravel bed equally also forms pull of vacuum to last earthing body, decline of water table in the soil body.Along with the water yield in the aqua storage tank 11 constantly increases, the pressure of the electron pressure switch 14 of water tank bottom continues to increase, treat that pressure reaches certain value after, electron pressure switch 14 is opened automatically, the water in the aqua storage tank 11 is again from top hose 15 reflow tank 10 slowly.Repeat said process again, form the positive and negative transition loop of water pressure, thereby realize the phenomenon simulation of underground water disturbance last overburden layer influence.
Claims (3)
1. transformation type constant head permeability test device, comprise coupon (1), metal perforated plate (2), piezometric tube (5), piston tank (6), metal framework (7), spring (9), water tank (10) and sealing switch (17), the top in coupon (1) left side is provided with the spillway hole that Open Side Down (3), the bottom is provided with the infiltration hole (4) that Open Side Down, metal perforated plate (2) lies against in the coupon (1), piezometric tube (5) is installed on the right side of coupon (1) by sealing switch (17), its opening upwards, water tank (10) places metal framework (7), metal framework (7) hangs fixing by the spring (9) that is connected in its upper end, piston tank (6) links to each other with coupon (1) by sealing switch (17), the rod end of its piston (18) is connected with metal framework (7), it is characterized in that: also comprise right support (8), aqua storage tank (11), bottom hose (12), miniature suction pump (13), electron pressure switch (14) and top hose (15), right support (8) is fixed in the upper right side of metal framework (7), aqua storage tank (11) places on the right support (8), miniature suction pump (13) is connected with water tank (10), the two ends of bottom hose (12) link to each other with miniature suction pump (13) with aqua storage tank (11) respectively, electron pressure switch (14) is installed in the aqua storage tank (11), and is communicated with water tank (10) by top hose (15).
2. a kind of transformation type constant head permeability test device according to claim 1, it is characterized in that: coupon (1) is the transparent organic glass pipe.
3. a kind of transformation type constant head permeability test device according to claim 1 is characterized in that: metal perforated plate (2) places 30CM place, top, coupon (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200242676U CN202024949U (en) | 2011-01-25 | 2011-01-25 | Variable-pressure constant head permeability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200242676U CN202024949U (en) | 2011-01-25 | 2011-01-25 | Variable-pressure constant head permeability test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202024949U true CN202024949U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200242676U Expired - Fee Related CN202024949U (en) | 2011-01-25 | 2011-01-25 | Variable-pressure constant head permeability test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202024949U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792172A (en) * | 2014-01-15 | 2014-05-14 | 山东农业大学 | Pressurized variable water head permeameter |
| CN104568693A (en) * | 2014-12-09 | 2015-04-29 | 北京林业大学 | Indoor soil infiltration rate measuring device and method |
| CN104677803A (en) * | 2015-03-12 | 2015-06-03 | 河南理工大学 | Constant and variable head composite penetration testing device |
| CN104914029A (en) * | 2015-05-29 | 2015-09-16 | 浙江工业大学 | Large-size urban solid waste framework and pore water volume variation coefficient measurement device |
| CN106092849A (en) * | 2016-05-27 | 2016-11-09 | 北京交通大学 | A kind of sand-pebble layer earth pressure balanced shield, EPBS driving anti-gush experimental provision and method |
| CN106596316A (en) * | 2016-12-26 | 2017-04-26 | 深圳大学 | Device and method for testing area of cross section of rusted reinforcing steel bar |
-
2011
- 2011-01-25 CN CN2011200242676U patent/CN202024949U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792172A (en) * | 2014-01-15 | 2014-05-14 | 山东农业大学 | Pressurized variable water head permeameter |
| CN103792172B (en) * | 2014-01-15 | 2016-04-27 | 山东农业大学 | Adding pressure type falling head permeameter |
| CN104568693A (en) * | 2014-12-09 | 2015-04-29 | 北京林业大学 | Indoor soil infiltration rate measuring device and method |
| CN104568693B (en) * | 2014-12-09 | 2017-12-15 | 北京林业大学 | A kind of indoor soil infiltration rate measurement apparatus and method |
| CN104677803A (en) * | 2015-03-12 | 2015-06-03 | 河南理工大学 | Constant and variable head composite penetration testing device |
| CN104677803B (en) * | 2015-03-12 | 2017-10-10 | 河南理工大学 | Often, varying head is combined pervasion test device |
| CN104914029A (en) * | 2015-05-29 | 2015-09-16 | 浙江工业大学 | Large-size urban solid waste framework and pore water volume variation coefficient measurement device |
| CN104914029B (en) * | 2015-05-29 | 2017-05-31 | 浙江工业大学 | Large scale city solid waste skeleton and pore water Volume Changes coefficient measuring device |
| CN106092849A (en) * | 2016-05-27 | 2016-11-09 | 北京交通大学 | A kind of sand-pebble layer earth pressure balanced shield, EPBS driving anti-gush experimental provision and method |
| CN106092849B (en) * | 2016-05-27 | 2019-02-05 | 北京交通大学 | A kind of sand-pebble layer earth pressure balanced shield, EPBS driving anti-gush experimental provision and method |
| CN106596316A (en) * | 2016-12-26 | 2017-04-26 | 深圳大学 | Device and method for testing area of cross section of rusted reinforcing steel bar |
| CN106596316B (en) * | 2016-12-26 | 2024-03-22 | 深圳大学 | Testing device and method for cross-sectional area of rusted steel bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20120125 |