CN102839628B - Large-scale high-pressure cylinder permeation simulation device and method - Google Patents
Large-scale high-pressure cylinder permeation simulation device and method Download PDFInfo
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- CN102839628B CN102839628B CN201210327627.9A CN201210327627A CN102839628B CN 102839628 B CN102839628 B CN 102839628B CN 201210327627 A CN201210327627 A CN 201210327627A CN 102839628 B CN102839628 B CN 102839628B
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Abstract
The invention discloses a large-scale high-pressure cylinder permeation simulation device for verifying the reliability of a self-reversed-filtering anti-seepage system in a water retaining structure of a hydraulic structure and a method for carrying out simulation by utilizing the device. The simulation device comprises a first section of cylinder, a second section of cylinder, a third section of cylinder and a fourth section of cylinder from top to bottom; a sealing cover is covered above the first section of cylinder; each two adjacent cylinders are connected by a screw, the first section of cylinder is connected with the sealing cover by a screw and rubber pads are respectively arranged between each two adjacent cylinders and between the first section of cylinder and the sealing cover; a seam concrete structural layer, a sand-gravel material cushion layer, a non-woven fabric layer, a coal powder ash layer and a protection layer are sequentially arranged in each cylinder from bottom to top; one end of a plunger pump driven by a motor is connected to a water filling nozzle on the sealing cover by a hydraulic overflow valve; the other end of the plunger pump is connected with a water storage tank by a water inlet pipe; both ends of a drain pipe are respectively connected with the sand-gravel material cushion layers and the water storage tank; and first, second, third, fourth and fifth pressure measurement meters are respectively arranged on the hydraulic overflow valve, the sealing cover, the upper parts of the coal powder ash layers, the lower parts of the coal powder ash layers and cracks of the seam concrete structural layers.
Description
Technical field
The present invention relates in hydraulic structure water-retaining structure and construct from anti-filter formula seepage control system, particularly the simulator of the large-scale high-pressure cylinder permeation of this seepage control system and emulation mode thereof.
Background technology
Applicant have developed a kind of be applicable in hydraulic structure water-retaining structure from anti-filter formula seepage control system, be arranged on the basement rock before water-retaining structure or covering layer, comprise bed course, filtering layer and the powder bed of material from the bottom to top successively, wherein bed course is made up of enrockment bed course and thin sand from bottom to up, filtering layer is made up of non-woven fabrics, and the powder bed of material is less than 10 by transmission coefficient
-4the cohesionless material composition of cm/s, this system is laid on hydraulic structure water-retaining structure such as concrete dam and arrives upon the heels of another in the scope at 1.5 to 2.0 times of height of dam places before dam.But this seepage control system validity also needs corresponding simulator and method to verify.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly verifies the simulator of hydraulic structure water-retaining structure from the large-scale high-pressure cylinder permeation of anti-filter formula seepage control system reliability.
The technical scheme solved the problem is: the simulator of this large-scale high-pressure cylinder permeation, comprise first paragraph from top to bottom, second segment, 3rd section, 4th cylindrical section, seal cover is covered with above first paragraph cylinder, all be connected by screw between adjacent cylinders and between first paragraph cylinder and seal cover, concrete with seam is placed successively from top to bottom in cylinder, sandy gravel bed course, nonwoven layer, Flyash Layer, topping, one end of motor-driven plunger displacement pump is connected to the water filling port on seal cover by Hydraulic Relief Valve, the other end of plunger displacement pump is connected with storage tank by water inlet pipe, the two ends of gutter connect sandy gravel bed course and storage tank respectively, on Hydraulic Relief Valve, on seal cover, the top of Flyash Layer, the bottom of Flyash Layer, sewing on of concrete with seam is respectively equipped with first, second, 3rd, 4th, 5th pressure gauge.
Owing to placing concrete with seam, sandy gravel bed course, nonwoven layer, Flyash Layer, topping from top to bottom successively in the cylinder of this simulator; and pressure gauge is set in each position; so this device from the duty of anti-filter formula seepage control system before real simulation hydraulic structure water-retaining structure, can verify the reliability of its anti-seepage effect.
Meanwhile, this invention additionally provides the emulation mode of large-scale high-pressure cylinder permeation, comprises the following steps:
(1) raw-material performance test and primary election, raw material comprise sandy gravel, non-woven fabrics, flyash;
(2) the installation and debugging of simulator;
(3) concreting, and preset the crack for simulating basement rock crack, form band crack structure;
(4) lay sandy gravel bed course at structure with seam, re-lay the non-woven fabrics of exhaust of soaking, and close the contact site of non-woven fabrics and cylinder inner wall with the earth that loess is made;
(5) layering is wet fills out flyash;
(6) capping, exhaust, saturated sample: open outlet valve after capping, add water from top to bottom, vacuumized by saturated sample with vacuum pump simultaneously;
(7) pressurize: after sample is saturated, starts pressurization, opens outlet valve, close after there are flowing out, maximum pressure adds to 3.0MPa, and tests water pressure and the leakage of the first to the 5th pressure gauge.
Adopt in this way, the reliability of above device anti-seepage effect can be verified.
Accompanying drawing explanation
Fig. 1 is the structural representation of the simulator according to large-scale high-pressure cylinder permeation of the present invention.
Detailed description of the invention
As shown in Figure 1, the simulator of this large-scale high-pressure cylinder permeation, it comprises first paragraph from top to bottom, second segment, 3rd section, 4th cylindrical section, seal cover 10 is covered with above first paragraph cylinder, all be connected by screw between adjacent cylinders and between first paragraph cylinder and seal cover, band crack structure is placed from top to bottom successively as being with the layer of concrete 1 in crack in cylinder, sandy gravel bed course 2, nonwoven layer 3, Flyash Layer 4, topping 5, the one end of the plunger displacement pump 7 that motor 6 drives is connected to the water filling port 9 on seal cover by Hydraulic Relief Valve 8, the other end of plunger displacement pump is connected with storage tank 12 by water inlet pipe 11, the two ends of gutter 13 connect sandy gravel bed course 2 and storage tank 12 respectively, on Hydraulic Relief Valve 8, on seal cover 10, the top of Flyash Layer 4, the bottom of Flyash Layer 4, sewing on of concrete 1 with seam is respectively equipped with first, second, 3rd, 4th, 5th pressure gauge 14, 15, 16, 17, 18.
Owing to placing band crack structure, sandy gravel bed course, nonwoven layer, Flyash Layer, topping successively from top to bottom in the cylinder of this simulator; and pressure gauge is set in each position; so this device can real simulation from the duty of anti-filter formula seepage control system, to verify the reliability of its anti-seepage effect.
Preferably, described every cylindrical section is the steel cylinder of thickness 10mm, internal diameter 500mm.
Preferably, motor is also furnished with frequency converter 19.
Preferably, rubber pad is provided with between adjacent cylinders.
Preferably, seal cover is provided with outlet valve 20.
Additionally provide the emulation mode of large-scale high-pressure cylinder permeation, comprise the following steps:
(1) raw-material performance test and primary election, raw material comprise sandy gravel, non-woven fabrics, flyash;
(2) the installation and debugging of simulator;
(3) concreting, and preset the crack for simulating basement rock crack, form band crack structure;
(4) lay sandy gravel bed course at structure with seam, re-lay the non-woven fabrics of exhaust of soaking, and close the contact site of non-woven fabrics and cylinder inner wall with the earth that loess is made;
(5) layering is wet fills out flyash;
(6) capping, exhaust, saturated sample: open outlet valve after capping, add water from top to bottom, vacuumized by saturated sample with vacuum pump simultaneously;
(7) pressurize: after sample is saturated, starts pressurization, opens outlet valve, close after there are flowing out, maximum pressure, can add to 3.0MPa, and tests water pressure and the leakage of the first to the 5th pressure gauge.
Adopt in this way, the anti-seepage effect quality of above device can be verified.
Preferably, the crack in step (3) is wide can to 2cm, and seam length can to 35cm.
Preferably, the non-woven fabrics in step (4) is cut into circle, and diameter is 500mm.
Preferably, according to every layer of wet volume filling out flyash in step (5), weigh up the weight of required flyash, then flyash compaction hammer is hit reality.
Provide a preferred embodiment below:
This device adopts 40mm steel cylinder that is thick, internal diameter 500mm to make, cylinder is made up of A, B, C, D tetra-sections, the bolt of 16 Φ 24mm is adopted to fix between cylinder and cylinder, centre is provided with rubber pad, barrel is furnished with water pressure measuring point, outer even pressure gauge, operating pressure can reach instantaneous pressure in 3.0MPa(process of the test and once reach 3.5MPa).Water under high pressure adopts plunger displacement pump supply, and motor is furnished with frequency converter, jointly controls hydraulic pressure with Hydraulic Relief Valve.Pump rated pressure is 4.0MPa.
The step of emulation mode is as follows:
(1) material property test and primary election, comprise impervious material (flyash) and filtering layer material (non-woven fabrics).
(2) development of test equipment, installation and debugging.
(3) concreting, and preset crack (the average wide 15mm in crack, seam the widest part reaches 20mm, the narrowest place 12mm, stitches long 35cm), for simulating basement rock crack.
(4) on concrete surface, lay bed course, re-lay the non-woven fabrics of exhaust of soaking, non-woven fabrics is cut into circle, and diameter is about 500mm, and closes the contact site of non-woven fabrics and cylinder inner wall with the earth that loess is made.
(5) layering is wet fills out flyash.According to the relation between flyash maximum dry density and optimum water content, layering is wet fills out flyash (at every turn filling 2.5cm in process of the test).Every layer of flyash concrete grammar filled out that wets is as follows: according to every layer of wet volume filling out flyash, weigh up the weight (controlling with 90% maximum dry density) of required flyash, then flyash compaction hammer is hit reality.
(6) capping, exhaust, saturated sample.Open the outlet valve being located at high-pressure cylinders permeameter top after capping, add water from top to bottom, use vacuum pump evacuation saturated sample simultaneously.
(7) pressurize.After sample is saturated, starts pressurization, opens the outlet valve that pressure gauge tube connector is arranged, close after there are flowing out, maximum pressure adds to 3.0MPa, and tests each pressure gauge water pressure and leakage.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong to the protection domain of technical solution of the present invention.
Claims (9)
1. the simulator of large-scale high-pressure cylinder permeation, is characterized in that: comprise first paragraph from top to bottom, second segment, 3rd section, 4th cylindrical section, is covered with seal cover (10), is all connected by screw between adjacent cylinders and between first paragraph cylinder and seal cover above first paragraph cylinder, place structural concrete layer (1) with seam in cylinder from top to bottom successively, sandy gravel bed course (2), nonwoven layer (3), Flyash Layer (4), topping (5), the one end of the plunger displacement pump (7) that motor (6) drives is connected to the water filling port (9) on seal cover by Hydraulic Relief Valve (8), the other end of plunger displacement pump is connected with storage tank (12) by water inlet pipe (11), and the two ends of gutter (13) connect sandy gravel bed course (2) respectively, storage tank (12), on Hydraulic Relief Valve (8), on seal cover (10), the top of Flyash Layer (4), the bottom of Flyash Layer, sewing on of concrete with seam (1) is respectively equipped with first, second, 3rd, 4th, 5th pressure gauge (14, 15, 16, 17, 18).
2. the simulator of large-scale high-pressure cylinder permeation according to claim 1, is characterized in that: described every cylindrical section is the steel cylinder of thickness 10mm, internal diameter 500mm.
3. the simulator of large-scale high-pressure cylinder permeation according to claim 1 and 2, is characterized in that: motor is also furnished with frequency converter (19).
4. the simulator of large-scale high-pressure cylinder permeation according to claim 1, is characterized in that: be provided with rubber pad between adjacent cylinders.
5. the simulator of large-scale high-pressure cylinder permeation according to claim 1, is characterized in that: seal cover is provided with outlet valve (20).
6. adopt the emulation mode of the large-scale high-pressure cylinder permeation of the simulator of large-scale high-pressure cylinder permeation according to claim 5, it is characterized in that: comprise the following steps:
(1) raw-material performance test and primary election, raw material comprise sandy gravel, non-woven fabrics, flyash;
(2) the installation and debugging of simulator;
(3) concreting, and preset the crack for simulating basement rock crack, form band crack structure;
(4) lay sandy gravel bed course at structure with seam, re-lay the non-woven fabrics of exhaust of soaking, and close the contact site of non-woven fabrics and cylinder inner wall with the earth that loess is made;
(5) layering is wet fills out flyash;
(6) capping, exhaust, saturated sample: open outlet valve after capping, add water from top to bottom, vacuumized by saturated sample with vacuum pump simultaneously;
(7) pressurize: after sample is saturated, starts pressurization, opens outlet valve, close after there are flowing out, maximum pressure adds to 3.0MPa, and tests water pressure and the leakage of the first to the 5th pressure gauge.
7. the emulation mode of large-scale high-pressure cylinder permeation according to claim 6, is characterized in that: the crack in step (3) is wide can to 2cm, and length can to 35cm.
8. the emulation mode of large-scale high-pressure cylinder permeation according to claim 7, is characterized in that: the non-woven fabrics in step (4) is cut into circle, and diameter is 500mm.
9. the emulation mode of large-scale high-pressure cylinder permeation according to claim 8, is characterized in that: according to every layer of wet volume filling out flyash in step (5), weigh up the weight of required flyash, then flyash compaction hammer is hit reality.
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| CN105118363B (en) * | 2015-07-03 | 2017-09-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Test method and model for simulating impervious curtain between concrete and bedrock |
| CN106568891B (en) * | 2016-10-12 | 2019-04-19 | 河海大学 | For the water saturated experimental rig of rocks sample batch positive pressure and application method |
Citations (5)
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| SU1148927A1 (en) * | 1983-12-02 | 1985-04-07 | Южный научно-исследовательский институт гидротехники и мелиорации | Apparatus for measuring seepage losses trough water reservoir lining |
| JP2009275362A (en) * | 2008-05-12 | 2009-11-26 | Kansai Electric Power Co Inc:The | River hydraulic test device |
| CN102277850A (en) * | 2011-05-05 | 2011-12-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Model experimental device for piping damage development process of embankment project sandy soil |
| CN102635087A (en) * | 2012-02-26 | 2012-08-15 | 长安大学 | River infiltration simulating device |
| CN202809555U (en) * | 2012-09-06 | 2013-03-20 | 中国水利水电科学研究院 | Large-sized high-pressure cylinder osmosis simulation device |
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- 2012-09-06 CN CN201210327627.9A patent/CN102839628B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1148927A1 (en) * | 1983-12-02 | 1985-04-07 | Южный научно-исследовательский институт гидротехники и мелиорации | Apparatus for measuring seepage losses trough water reservoir lining |
| JP2009275362A (en) * | 2008-05-12 | 2009-11-26 | Kansai Electric Power Co Inc:The | River hydraulic test device |
| CN102277850A (en) * | 2011-05-05 | 2011-12-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Model experimental device for piping damage development process of embankment project sandy soil |
| CN102635087A (en) * | 2012-02-26 | 2012-08-15 | 长安大学 | River infiltration simulating device |
| CN202809555U (en) * | 2012-09-06 | 2013-03-20 | 中国水利水电科学研究院 | Large-sized high-pressure cylinder osmosis simulation device |
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