CN103884827A - Magnetic field force-seepage force model test device applicable to earth-rock slope - Google Patents
Magnetic field force-seepage force model test device applicable to earth-rock slope Download PDFInfo
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- CN103884827A CN103884827A CN201410014916.2A CN201410014916A CN103884827A CN 103884827 A CN103884827 A CN 103884827A CN 201410014916 A CN201410014916 A CN 201410014916A CN 103884827 A CN103884827 A CN 103884827A
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- 238000001764 infiltration Methods 0.000 claims abstract description 25
- 230000008595 infiltration Effects 0.000 claims abstract description 24
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- 239000004575 stone Substances 0.000 claims description 32
- 239000002689 soil Substances 0.000 claims description 18
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Abstract
The invention discloses a magnetic field force-seepage force model test device applicable to an earth-rock slope. The magnetic field force-seepage force model test device mainly comprises a talus body, a magnetic force layer, an infiltration tank, a header tank, a deformable permeable leg protecting body, a rainfall pipe, a displacement sensor and a pore pressure gauge, wherein the talus body and the ground form an angle of 20-45 degrees; the magnetic force layer is arranged below the talus body and parallel to the talus body; the infiltration tank is arranged at the upper end of the talus body, communicated with a water source and used for exerting seepage force along the slope on the talus body; the header tank is arranged in the direction of the lower end of the talus body and used for collecting seepage; the deformable permeable leg protecting body is arranged between the lower end of the talus body and the header tank and used for maintaining slope legs of the talus body; the rainfall pipe is arranged above the talus body, communicated with the water source and used for simulating rainfall; the displacement sensor is arranged above the talus body; the pore pressure gauge is arranged inside the talus body. The magnetic field force-seepage force model test device can really simulate effective stress and water pressure of the earth-rock slope inside the slope body under the synergistic effects of the seepage force along the slope and the magnetic field force of the vertical slope, the problem that a geotechnical model experiment cannot easily meet the geometric similarity and the physical similarity is solved, and a research means is provided for ecological protection of the earth-rock slope.
Description
Technical field
The present invention relates to native stone protecting slope ecology technical field, relate to specifically one and be applicable to native stone protecting slope ecology model test apparatus.
Background technology
Aspect geotechnical model test, popular test at present mainly contains conventional model, magnetic force geologic model and centrifugal model test.Different from rock and concrete, for the soil body, correctly simulating effective weight stress and water pressure is that its geotechnical model test is successfully crucial.A large amount of earth and stone material laboratory test results show, earth and stone material has following characteristics:
1. stress-strain relation is elastoplasticity and non-linear;
2. stress-strain relation shows difference under different stress level conditions, and deformation modulus, the intensity etc. of the soil body is all closely related with stress level, and this correlativity is nonlinear;
3. soil is three-phase body, adds the effect of rainfall and underground water, just requires the gravity stress in geotechnical model test must be consistent with prototype with pore water pressure, could simulate comparatively truly prototype with model.
Conventional geotechnical model test is in the gravity field of 1g, former molded dimension can be dwindled to n doubly by geometric similarity, but because of its physical similarity that can not meet soil body gravity stress level and water pressure, conventional geotechnical model test is difficult to meet physical similarity, therefore soil mechanics circle is seldom used at present.For above-mentioned reasons, similar even if bumper can be simulated dynamic stress, also limit it and be applied to earth structure model test.
Current magnetic force geologic model only considers that the gravity stress of solid phase is similar, can not meet liquid phase and water pressure is similar.
Geotechnical centrifugal model test is based on by the principle of centrifugal force field simulated gravity field, by being applied to ng centrifugal force on model, the effective stress of the soil body in model and pore water pressure and prototype reached unanimity.But the centrifugal force stress field that in fact obtained is in same plane unshapeliness.Although centrifugal model can meet geometry and the physical similarity of geotechnical model and prototype, but due to equipment manufacturing cost costliness, technical operation complexity, dynamic similation operating difficulties, general utilization rate is low, and has the shortcoming being not suitable for for the experimental study of natural vegetation ecological revetment.
In view of the geotechnical model test of prior art is not considered the effect of rainfall and underground water, and the seepage force of rainfall and underground water changes effective stress and the water pressure of the soil body, can not simulate truly native stone side slope prototype, therefore build can real simulation the empirical model of soil stone side slope carry out the problem that simulated experiment is affiliated field technology worker facing.
Summary of the invention
The state of the art of carrying out simulated experiment for the native stone side slope empirical model of prior art, object of the present invention aims to provide a kind of magnetic field force-seepage force model test apparatus that is applicable to native stone side slope, can not simulate truly the problem of prototype to solve the native stone side slope empirical model of prior art.
Magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope provided by the invention, its formation mainly comprises the slide rock body that is 20-45° angle with ground, be positioned at the magnetic force layer that slide rock body below and slide rock body be arranged in parallel, be positioned at slide rock body upper end and be communicated with the infiltration groove pond for slide rock body being applied to inclined slope aspect seepage force with water source, be positioned under slide rock body extreme direction for collecting the water leg pond of infiltration, between slide rock body lower end and water leg pond for safeguarding the spats body of slide rock body toe, be positioned at the rainfall pipe of the simulated rainfall being communicated with water source above slide rock body, meter is pressed in the hole that is arranged on the displacement transducer of slide rock body top and be arranged in slide rock body, described slide rock body is made up of the mixed simulation slope body soil that contains irony aggregate, on slide rock body, plant and be implanted with plant, the one side that described infiltration groove pond and slide rock body join designs some water seepage holes, the spats body of the porous that described spats body is made up of variable compression shape material, so that infiltration water enters water leg pond through spats body, and ensure to allow slide rock body, under seepage force effect, seepage deformation occurs, the one side that described water leg pond and spats body join is designed with gully-hole.
In technique scheme of the present invention, described magnetic force layer can be the magnetic board of monoblock, can be also to form magnetic force net by permanent magnetic material, and magnetic force layer can directly be placed in slide rock body below, also can be suspended from slide rock body below, is preferably directly placed in slide rock body below; Described magnetic force layer can be electromagnetic force layer, also can or permanent magnet magnetic force layer.
In technique scheme of the present invention, the weight content of the irony aggregate in described slide rock body is 10%-40%; Described irony aggregate can be iron filings, can be also irony sand pearl, and particle size distribution range is 0.25-2.0mm.
In technique scheme of the present invention, described slide rock body can make it to be with ground by support the slope angle of setting, also can make it to be with ground by supporter the slope angle of setting, and described supporter can be accumulation body, can be also to build to build body etc.
In technique scheme of the present invention, described infiltration groove pond is paid the utmost attention to and is designed to closed structure; The water source of capable of regulating head or pressure is preferentially selected at the water source being connected with infiltration groove pond.Further preferentially select the water tank that can adjust up and down head.
In technique scheme of the present invention, the plant on slide rock body, can be directly plantation, also can transplant, no matter but be that situation, in the time testing, plant on slide rock body, the plant that its root system and branch stem distribute on best and simulation prototype slide rock body approaches.
The further technical scheme of the present invention, the main body of test unit, be described slide rock body, be positioned at the infiltration groove pond of slide rock body upper end, that the spats body and the water leg pond etc. that are positioned at slide rock body lower end is arranged on case is indoor, in case chamber body wall, the both sides box body wall parallel with slide rock body preferably adopts transparent material material to make, for example poly (methyl methacrylate) plate is made, so that researchist understands slide rock body in inclined slope aspect seepage force and the variation of vertical domatic magnetic field force synergy upper/lower positions by observation in process of the test.Further, observe for the ease of researchist, on the both sides casing wall of being made by poly (methyl methacrylate) plate, be preferably designed with observation indicia grid.
In technique scheme of the present invention, the rainfall pipe of simulated rainfall is arranged on the casing roof of case chamber conventionally.In order to make the plant on slide rock body accelerate to grow up, the rainfall of simulating can be added with the nutritional labeling of Promoting plant growth.
In technique scheme of the present invention, the hole pressure meter that is arranged in the displacement transducer of slide rock body top and buries underground at slide rock body, the record outdoor with being arranged on case shows that secondary instrument is connected respectively.
Magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope provided by the invention, be Penetration Signature and the framework characteristic profound understanding to the long-pending body of the native stoneledges such as viscosity coarse-grained soil based on inventor, proposed native stone side slope to apply inclined slope aspect seepage force and the synergistic soil test model method of vertical domatic magnetic field force and experimental provision.Magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope provided by the invention, with the long-pending suffered mormal stress of body of vertical domatic magnetic field force simulation prototype soil stoneledge, with the seepage simulation soil stone side slope that applies along slope suffered suitable slope seepage force under underground water and rainwater effect in slope, utilize the synergy of the seepage force of vertical domatic magnetic field force and inclined slope aspect, make effective weight stress and the water pressure of slide rock body Model amplify the multiple of ratio of similitude, consistent with prototype slide rock body, effective stress and water pressure in the slope body of native stone side slope under rainwater acts synergistically along slope seepage force and pore water pressure are simulated truly, overcome the drawback that traditional geotechnical model test can not reflect resistance to shear of soil level, magnetic force geologic model can only meet soil skeleton gravity stress ratio of similitude and can not reflect the problem of water pressure ratio of similitude, and centrifugal model equipment manufacturing cost costliness, technical operation complexity, dynamic similation operating difficulties, general utilization rate is low, and there is the shortcoming being not suitable for for the research of vegetation ecological slope test.The geotechnical model that openly solved of the present invention is tested a difficult problem that is difficult to while meeting geometric phase Sihe physical similarity, for native stone protecting slope ecology provides a research means, has promoted the progress of native stone protecting slope ecology technology.
Magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope provided by the invention, have reasonable in design, technique is simple, easy to operate, cost is low, be easy to promote feature, the stress level that both can simultaneously ensure slide rock body soil skeleton stress and water pressure improves identical ratio of similitude multiple, reduce again ecological revetment test difficulty, be convenient to test operation.
Brief description of the drawings
Fig. 1 is the main TV structure schematic diagram of one embodiment of the invention.
Fig. 2 is the plan structure schematic diagram of accompanying drawing 1 embodiment.
Fig. 3 be in accompanying drawing 1 I-I to sectional structure schematic diagram.
Fig. 4-a is along slope seepage force simulation schematic diagram; Fig. 4-b is vertical domatic magnetic field force simulation schematic diagram; Fig. 4-c is the mechanical simulation schematic diagram under suitable slope of the present invention seepage force acts synergistically with vertical domatic magnetic field force.
In above-mentioned accompanying drawing, the object of each shown by reference numeral mark is respectively: water head equipment, 17-flowmeter, 18-simulated rainfall water pipe outside meter, 13-displacement transducer, 14-infiltration groove pond, 15-water inlet pipe, 16-are pressed in corrosion resistant plate, 2-poly (methyl methacrylate) plate, 3-slide rock body supporter, 4-spats body, 5-water leg pond, 6-drainpipe, 7-magnetic force layer, 8-Magnetic Control device, 9-observation mark, 10-slide rock body, the plant of the domatic plantation of 11-slide rock body, the 12-hole that 1-can splice with angle steel.
Embodiment
Provide embodiments of the invention below in conjunction with brief description of the drawings, and the present invention is further illustrated by embodiment, so that understand more easily the present invention.But it needs to be noted; the specific embodiment of the present invention is not limited to the described form of embodiment below; those skilled in the art is not in the situation that paying creative work; also can design easily other embodiment; therefore the embodiment of embodiment given below should be interpreted as to protection scope of the present invention, protection scope of the present invention is limited in to given embodiment.
Embodiment 1
Magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope of the present embodiment, its structure is as accompanying drawing 1, shown in 2 and 3, form and comprise case chamber and be positioned at that case is indoor is the slide rock body 10 of approximately 20 ° of slope angles with ground, be located immediately at the magnetic force layer 7 that slide rock body below and slide rock body be arranged in parallel, be positioned at slide rock body upper end and be communicated with the infiltration groove pond 14 for slide rock body being applied to inclined slope aspect seepage force with water source, be positioned under slide rock body extreme direction for collecting the water leg pond 5 of infiltration, between slide rock body lower end and water leg pond for safeguarding the spats body 4 of slide rock body toe, be positioned at the rainfall pipe 18 of the simulated rainfall being communicated with water source above slide rock body, meter 12 is pressed in the hole that is arranged on the displacement transducer 13 of slide rock body top and be embedded in slide rock body, described slide rock body is made up of the mixed simulation slope body soil that contains irony aggregate, and irony aggregate is that particle size distribution range is the steel ball of 0.25-2.0mm, and weight content accounts for 10%, plant 11 on slide rock body is for transplanting plant, described infiltration groove pond is closed structure, and the one side of joining with slide rock body designs some water seepage holes, and the water source that infiltration groove pond connects is the water tank of capable of regulating head, the Water permeable body that described spats body is made up of the rubber block that is filled in compressible distortion in casing, so that infiltration water enters water leg pond through spats body, and allows slide rock body to produce seepage deformation under seepage force effect, described water leg pond is closed cell pond, and the one side of joining with spats body is designed with gully-hole, is designed with drainpipe 6, the case chamber wall both sides box body wall parallel with slide rock body made by transparent organic glass, the case chamber body wall of another both sides is made by stainless steel material, be organized into one by angle steel, wherein the both sides casing wall by transparent organic glass made parallel with slide rock body is designed with observation mark 9, so that researchist understands slide rock body in inclined slope aspect seepage force and the variation of vertical domatic magnetic field force synergy upper/lower positions by observation in process of the test.The two ends of described rainfall pipe 18 are placed on the box body wall of both sides, measure slide rock displacement body sensor 13 and be placed in rainfall pipe 18 belows, be placed in the displacement transducer 13 of rainfall pipe 18 belows and be embedded in hole in slide rock body press meter 12 be positioned at case outdoor record display instrument or Instrument connection; Described magnetic force layer 7 is electromagnetic force layer, and electromagnetism intensity of force is regulated by Magnetic Control device 8.
Magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope of the present embodiment, basic identical with the structure of test unit described in embodiment 1 on the whole, difference place is that test unit is unenclosed construction, slide rock body 10 is 45 ° of slope angle settings by frame and ground, irony aggregate in slide rock body is that particle size distribution range is the iron filings of 0.25-2.0mm, and weight content accounts for 30%; Magnetic force layer 7 is permanent magnet material plate, is directly placed in slide rock body below, integral with the slide rock bodily form; The water source that infiltration groove pond connects is capable of regulating pressure water pump.
Magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope of the present embodiment, basic identical with the structure of test unit described in embodiment 1 on the whole, difference place is that slide rock body 10 is 30 ° of slope angle settings by assembling supporter and ground, irony aggregate in slide rock body is that particle size distribution range is the iron filings of 0.25-2.0mm, and weight content accounts for 15%; Magnetic force layer 7 is permanent magnet material plate, is suspended in slide rock body below; The water source that infiltration groove pond connects is the water tank of adjustable height position.
Claims (10)
1. one kind is applicable to magnetic field force-seepage force model test apparatus of native stone side slope, it is characterized in that: mainly comprise the slide rock body (10) that is 20-45° angle with ground, be positioned at the magnetic force layer (7) that slide rock body below and slide rock body be arranged in parallel, be positioned at slide rock body upper end and be communicated with the infiltration groove pond (14) for slide rock body being applied to inclined slope aspect seepage force with water source, be positioned under slide rock body extreme direction for collecting the water leg pond (5) of infiltration, between slide rock body lower end and water leg pond for safeguarding the spats body (4) of slide rock body toe, be positioned at the rainfall pipe (18) of the simulated rainfall being communicated with water source above slide rock body, meter (12) is pressed in the hole that is arranged on the displacement transducer (13) of slide rock body top and be arranged in slide rock body, described slide rock body is made up of the mixed simulation slope body soil that contains irony aggregate, on slide rock body, plant and be implanted with plant, the one side that described infiltration groove pond and slide rock body join designs some water seepage holes, the spats body of the porous that described spats body is made up of variable compression shape material, so that infiltration water enters water leg pond through spats body, and ensure to allow slide rock body, under seepage force effect, seepage deformation occurs, the one side that described water leg pond and spats body join is designed with gully-hole.
2. magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope according to claim 1, is characterized in that: described magnetic force layer is magnetic board, and slide rock body is directly placed on magnetic board.
3. magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope according to claim 2, is characterized in that: described magnetic board is electromagnetic force plate or permanent magnet magnetic force plate.
4. magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope according to claim 1, is characterized in that: the weight content of the irony aggregate in described slide rock body is 10%-40%.
5. magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope according to claim 4, is characterized in that: the particle diameter of described irony aggregate is distributed as 0.25-2.0mm.
6. according to the magnetic field force-seepage force model test apparatus that is applicable to native stone side slope one of claim 1 to 5 Suo Shu, it is characterized in that: described slide rock body is the slope angle of setting by support or supporter and ground.
7. according to the magnetic field force-seepage force model test apparatus that is applicable to native stone side slope one of claim 1 to 5 Suo Shu, it is characterized in that: described infiltration groove pond (14) is closed structure, and the water source being connected with infiltration groove pond (14) is the water source of capable of regulating head or pressure.
8. magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope according to claim 7, is characterized in that: the water source being connected with infiltration groove pond (14) is the water tank that can adjust up and down head.
9. according to the magnetic field force-seepage force model test apparatus that is applicable to native stone side slope one of claim 1 to 5 Suo Shu, it is characterized in that: it is indoor that slide rock body, the infiltration groove pond that is positioned at slide rock body upper end, the spats body that is positioned at slide rock body lower end and water leg pond are arranged on case, and both sides box body wall parallel with slide rock body in case chamber body wall is made by transparent material.
10. magnetic field force-seepage force the model test apparatus that is applicable to native stone side slope according to claim 9, is characterized in that: the both sides box body wall parallel with slide rock body made by poly (methyl methacrylate) plate, is designed with observation indicia grid (9) on casing wall.
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| CN201410014916.2A CN103884827B (en) | 2014-01-13 | 2014-01-13 | Be applicable to the magnetic field force-seepage force model test apparatus of native stone side slope |
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Cited By (9)
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| CN105223335A (en) * | 2015-09-30 | 2016-01-06 | 四川大学 | Tunnel zone of influence vegetation growth water method of testing |
| CN105510167A (en) * | 2016-02-03 | 2016-04-20 | 山东大学 | Water erosion characteristic testing device and method for geotextile slope protection |
| CN106248910A (en) * | 2016-09-27 | 2016-12-21 | 西安长庆科技工程有限责任公司 | One sweeps spray formula side slope rainfall system |
| CN106841309A (en) * | 2016-12-28 | 2017-06-13 | 中国地质大学（武汉） | Based on Electromagnetic Drive and the theoretical quickening water translocation method and device of consolidation by electroosmosis |
| CN107991464A (en) * | 2018-01-19 | 2018-05-04 | 石家庄铁道大学 | For wearing side slope protection modularization model pilot system under tunnel |
| CN111157418A (en) * | 2019-08-27 | 2020-05-15 | 华南农业大学 | Test device and method for simulating construction of ecological channel based on microbial mineralization |
| CN111576328A (en) * | 2020-04-17 | 2020-08-25 | 华北水利水电大学 | Utilize magnetic field force to change laboratory bench of gelatinization sand gravel dam model test piece unit weight |
| CN113433019A (en) * | 2021-08-27 | 2021-09-24 | 成都理工大学 | Vegetation slope protection erosion penetration experiment simulation device and simulation method |
| CN117368030A (en) * | 2023-12-07 | 2024-01-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing slope flow-seepage flow joint erosion wide-grading soil |
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| CN105223335A (en) * | 2015-09-30 | 2016-01-06 | 四川大学 | Tunnel zone of influence vegetation growth water method of testing |
| CN105510167A (en) * | 2016-02-03 | 2016-04-20 | 山东大学 | Water erosion characteristic testing device and method for geotextile slope protection |
| CN106248910A (en) * | 2016-09-27 | 2016-12-21 | 西安长庆科技工程有限责任公司 | One sweeps spray formula side slope rainfall system |
| CN106841309B (en) * | 2016-12-28 | 2024-01-09 | 中国地质大学（武汉） | Method and device for accelerating moisture migration based on electromagnetic driving and electroosmosis consolidation theory |
| CN106841309A (en) * | 2016-12-28 | 2017-06-13 | 中国地质大学（武汉） | Based on Electromagnetic Drive and the theoretical quickening water translocation method and device of consolidation by electroosmosis |
| CN107991464A (en) * | 2018-01-19 | 2018-05-04 | 石家庄铁道大学 | For wearing side slope protection modularization model pilot system under tunnel |
| CN111157418A (en) * | 2019-08-27 | 2020-05-15 | 华南农业大学 | Test device and method for simulating construction of ecological channel based on microbial mineralization |
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| CN113433019B (en) * | 2021-08-27 | 2021-10-29 | 成都理工大学 | Vegetation slope protection erosion penetration experiment simulation device and simulation method |
| CN113433019A (en) * | 2021-08-27 | 2021-09-24 | 成都理工大学 | Vegetation slope protection erosion penetration experiment simulation device and simulation method |
| CN117368030A (en) * | 2023-12-07 | 2024-01-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing slope flow-seepage flow joint erosion wide-grading soil |
| CN117368030B (en) * | 2023-12-07 | 2024-02-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing slope flow-seepage flow joint erosion wide-grading soil |
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