CN101216479B - Test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition - Google Patents
Test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition Download PDFInfo
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- CN101216479B CN101216479B CN2007101691172A CN200710169117A CN101216479B CN 101216479 B CN101216479 B CN 101216479B CN 2007101691172 A CN2007101691172 A CN 2007101691172A CN 200710169117 A CN200710169117 A CN 200710169117A CN 101216479 B CN101216479 B CN 101216479B
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Abstract
The invention relates to a device for testing ecological slope protection of ecologic rock and soil mechanics under simulated rainfall condition, which is mainly used for studying scouring (or erosion) characteristics test of rock and soil slope by artificial rainfall and belongs to the field of geotechnical engineering and environmental engineering. The test device comprises an automatic variableslope test rack, a test soil bin and a rainfall simulator with adjustable rain intensity, wherein a rotary support is composed of a guide rail, a crank, a crank brake, an upper shaft and a device for preventing backward sliding; a fixed bearing support is composed of a lower shaft, a bearing seat, a bending guide groove, a capstan and a lower shaft caging device; the rainfall simulator with adjus table rain intensity is disposed on the variable slope test race through a support and includes a rainfall simulator, a pressure sensor, a vibrator, a barometer, a relief valve, etc. The inventive test device has the advantages of simple structure, adjustable rain intensity, uniform rainfall, automatic online collection of air pressure, water pressure and rainfall amount of the rainfall simulator and reduced time and labor force for loading the test soil bin.
Description
Technical field
The present invention relates to a kind of test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition, be mainly used in the research of rainmaking, belong to Geotechnical Engineering and field of environment engineering rock soil mass slope erosion (or erosion) attribute testing.
Background technology
Safety that exposed ground slope body brings and ecological environment problem have become focus and the focal issue in the current environmental problem.According to statistics, since the United Nations's Stockholm environmental protection meeting in 1972, because human factors such as engineering construction cause soil erosion and cultivated land occupancy to make the whole world lose nearly 5,000 hundred million tons veneer of soil; Meanwhile, vegetation deterioration causes the carbon dioxide output of greenhouse effect to increase by 10%, and wherein, the whole world surpasses 8,000,000,000 tons to the carbon dioxide and the sulfide of airborne release every year, and ozonosphere is seriously damaged.At present, China's soil erosion area accounts for 51% of area, and wherein water conservancy erosion area is about 180km2.The Eleventh Five-Year Plan period, the increase along with capital constructions such as highway in China, railway, water conservancy, electric power and mine and engineering excavation and embankment engineering has formed a large amount of secondary barrens and serious soil erosion phenomenon.The massif that vegetation wrecks causes a large amount of bare side slopings, the a series of environmental problems of the thing followed, worsen and the destruction of biologic chain etc. as soil erosion, landslide, rubble flow, local microclimate, all aggravated the deterioration of the ecosystem, this phenomenon is particularly evident in some ecological environment frailty districts.
The vegetation ecological bank protection is that a kind of solid soil of vegetation that utilizes protects and afforest effective way to sloping body, can consider biology simultaneously, influence each other between environment and human body and act on, it is by the ecological engineering self-supporting, self-organization, realize the anti-impact erosion of side slope with function such as self-regeneration, moving and the ecological recovery of antiskid, to reach the minimizing soil erosion, purpose such as keep the ecological diversity and the ecologic equilibrium and beautify the environment, can solve the contradiction of slope project construction and environmental destruction, improve protection effect, reduce engineering cost, can effectively protect the side slope disaster thereby reach, can make biology again, environment and and people three be benefited coordinated development mutually.The slope vegetation protection technology and along with growth and the breeding of plant, can also strengthen the anti-erosional competency of sloping body except the characteristics with economy; 2000 (31) numbers files of State Council " State Council is about the construction of the national green channel of further propelling " regulation: the green channel construction must be carried out under the prerequisite that ensures no potential safety hazard, make overall planning with Facilities Construction such as highway, railway, water conservancies and afforest synchronously with the engineering construction surrounding area.
In estimating the process of slope vegetation protection, must test by indoor analog simulation and obtain the correlation technique parameter ground slope body stability influence.Site test and observation process only can reflect the change procedure of a certain special time specific operation condition descending body medium moisture field, stress field and displacement field, can not system the dynamic change of reflection rock soil mass medium rock soil mass antiscour and erosional competency in whole vegetation construction and growth course and under the different operating mode, thereby can't satisfy the needs of practical engineering application.At present ecological revetment equipment has seriously restricted the accuracy that the development of describing sloping body estimation of stability model and minimum safety factor predict the outcome in the controllability of raininess, the uniformity coefficient of rainfall and the aspect limitation such as automatic change slope of experiment frame under the simulated rainfall conditions.Existing pilot system fails to realize the automatic adjusting of rainfall intensity, the stability analysis under the different grade of side slope conditions and have or not vegetation condition descending body to be subjected to rainfall to wash away (or corrode) comparative analysis.
Summary of the invention
At the problem of above-mentioned existence, it is a kind of simple in structure, easy to operate that the object of the invention is to provide, and is applicable to a kind of test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition of indoor ecological bank protection simulation test.
Its technical solution is:
Test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition, comprise automatic change slope test stand, the adjustable rain controller of soil bin and raininess, automatically become sloping test stand by runing rest, fixing carrying support and gradient control device constitute, runing rest is by guide rail, crank, the crank braking, last rotating shaft, form with anti-slip equipment, fixing carrying support is by lower rotary shaft, bearing seat, crooked guide groove, capstan and lower rotary shaft stop means are formed, runing rest is by being installed in Bearing Installation in the rotating shaft in the bearing seat of fixing carrying support, in the crooked guide groove that is installed in fixing carrying support of crank activity, soil bin is seated in the guide rail of runing rest by roller, the two ends of lower rotary shaft are respectively arranged with capstan, and the hinge rope in the capstan is fixedly connected on the crank along crooked guide groove by the pulley that is arranged on crooked guide groove end.Gradient control device comprises dial plate and pointer, and dial plate is fixedly mounted on the fixing carrying support, and indicator is fixedly mounted on the end of rotating shaft, and the center of dial plate and the axle center of last rotating shaft are on same axis.The lower rotary shaft stop means is fixedly mounted on respectively on the two ends of lower rotary shaft.Lower rotary shaft is by the rotating shaft interlock of gear and motor.
The adjustable rain controller of raininess is by rain controller, pressure transducer, Vib., barometer, pressure regulator valve, air pump, flowmeter, surplus valve, water pump, retaining valve is formed, rain controller top is cylinder, the bottom is the bucket type shower nozzle, fixedly connected between cylinder and the bucket type shower nozzle, cylinder connects barometer by pipeline, pressure regulator valve, air pump, the bucket type shower nozzle is by pipeline connection traffic meter, retaining valve, surplus valve, water pump, pressure transducer is arranged in the bucket type shower nozzle, Vib. is installed on the outer wall of rain controller, and the adjustable rain controller of raininess is seated in by support and becomes sloping test stand side.
Owing to adopted above technical scheme, the angle that the automatic change slope test stand that ecological rock-soil mechanics slope test device of the present invention adopts can be regulated test stand, the adjustable rain controller of raininess that uses can be regulated rainfall intensity, be captured in the air pressure under certain raininess, hydraulic pressure, discharge data, can simulated rainfall conditions under ecological rock-soil mechanics slope test.
Ecological rock-soil mechanics slope test device of the present invention has simple in structure, scalable rainfall intensity, rainfall is even, has realized the automatic on-line collection of rain controller internal gas pressure, hydraulic pressure and rainfall amount, saves the time of loading and unloading soil bin and the characteristics of labor capacity.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is an automatic change of the present invention slope test stand synoptic diagram
Fig. 3 is a soil bin structural representation of the present invention
Fig. 4 is a fixedly carrying supporting structure synoptic diagram of the present invention
Fig. 5 is a rotatable test stand structural representation of the present invention
Fig. 6 is the adjustable rain controller synoptic diagram of raininess of the present invention
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in further detail: see accompanying drawing
Test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition comprises automatic change slope test stand, soil bin A and the adjustable rain controller B of raininess, and the adjustable rain controller A of raininess is seated in by support and becomes sloping test stand B top.Soil bin 12 is three, automatically become sloping test stand by runing rest, fixing carrying support and gradient control device constitute, runing rest is by guide rail 11, crank 9, crank braking 8, last rotating shaft 10, form with anti-slip equipment, guide rail 11 is corresponding with soil bin 12, crank braking 8 directly and crank 9 link together, fixing carrying support is by lower rotary shaft 1, bearing seat 5, crooked guide groove 7, capstan 3 and lower rotary shaft stop means 2 are formed, lower rotary shaft stop means 2 can adopt gear and other device control, 2 position-limiting actions of lower rotary shaft stop means, runing rest is installed in the bearing seat 5 of fixing carrying support by the bearing 16 that is installed in the rotating shaft 10, in the crooked guide groove 7 that is installed in fixing carrying support of crank 9 activities, soil bin 12 is seated in the guide rail 11 of runing rest by roller 15, the two ends of lower rotary shaft 1 are respectively arranged with capstan 3, and the hinge rope 4 in the capstan 3 is fixedly connected on the crank 9 along crooked guide groove 7 by the pulley 6 that is arranged on crooked guide groove 7 ends.Gradient control device comprises dial plate 14 and pointer 13, and dial plate 14 is fixedly mounted on the fixing carrying support, refers to that 13 are fixedly mounted on the end of rotating shaft 10, and the center of dial plate 14 and the axle center of last rotating shaft are on same axis.Lower rotary shaft stop means 2 is fixedly mounted on respectively on the two ends of lower rotary shaft 1.Lower rotary shaft is played position-limiting action.Lower rotary shaft 1 is by the rotating shaft interlock of gear and motor.Driven by motor lower rotary shaft 1, the crank 9 that the rotation of lower rotary shaft 1 is cut with scissors ropes 4 driven rotary supports by capstan 3 tractions that are arranged on lower rotary shaft 1 two ends moves along crooked guide groove 7.
The adjustable rain controller A of raininess is made up of rain controller, pressure transducer 20, Vib. 21, barometer 24, pressure regulator valve 25, air pump 26, flowmeter 27, surplus valve 28, water pump 29, retaining valve 30, and rain controller top is cylinder 22, and the bottom is a bucket type shower nozzle 19.Pressure transducer 20 is arranged in the bucket type shower nozzle 19, and pressure transducer 20 is measured the rainfall water pressure.Fixedly connected between cylinder 22 and the bucket type shower nozzle 19, cylinder 22 connects barometer 24, pressure regulator valve 25, air pump 26 by pipeline, pressure regulator valve 25 is arranged between barometer 24 and the air pump 26, barometer 24 is used to measure the gaseous tension in the cylinder 22, air pump 26 blasts gas in cylinder 22, pressure regulator valve 25 adjustments of gas pressure, pressure regulator valve 25 adjustments of gas pressure.Bucket type shower nozzle 19 is by pipeline connection traffic meter 27, retaining valve 30, surplus valve 28, water pump 29, flowmeter 27 is provided with between bucket type shower nozzle 19 and the retaining valve 30, surplus valve 28 is arranged between retaining valve 30 and the water pump 29, piston 23 is exerted pressure in bucket type shower nozzle 19 under gas pressure, the water pressure that pressure transducer 20 is measured in the bucket type shower nozzle 19, bucket type shower nozzle 19 is evenly to soil bin 12 rainfalls, vibration 21 is installed on the outer wall of rain controller, soil bin 12 evenly falls raindrop to spill in vibrations cylinder 22.Pressure transducer 20, flowmeter 27, Vib. 21, barometer 24 are wired to computer 18, and computer is gathered the vibration amplitude and the frequency of the signal and the output signal control Vib. 21 of pressure transducer 20, flowmeter 27, barometer 24.
Claims (7)
1. test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition, it is characterized in that: test unit is by becoming sloping test stand (B), the adjustable rain controller of soil bin and raininess (A) constitutes, become sloping test stand (B) by runing rest, fixing carrying support and gradient control device constitute, runing rest is by guide rail (11), crank (9), crank braking (8), last rotating shaft (10) and anti-slip equipment are formed, fixing carrying support is by lower rotary shaft (1), bearing seat (5), crooked guide groove (7), capstan (3) and lower rotary shaft stop means (2) are formed, runing rest is installed in the bearing seat (5) of fixing carrying support by the bearing (16) that is installed in the rotating shaft (10), in the crooked guide groove (7) that is installed in fixing carrying support that crank (9) is movable, soil bin (12) is seated in the guide rail (11) of runing rest by roller (15), the two ends of lower rotary shaft (1) are respectively arranged with capstan (3), hinge rope (4) in the capstan (3) is fixedly connected on the crank (9) along crooked guide groove (7) by the pulley (6) that is arranged on crooked guide groove (7) end, the adjustable rain controller of raininess (A) is by rain controller, pressure transducer (20), Vib. (21), barometer (24), pressure regulator valve (25), air pump (26), flowmeter (27), surplus valve (28), water pump (29), retaining valve (30) is formed, rain controller top is cylinder (22), the bottom is bucket type shower nozzle (19), fixedly connected between cylinder (22) and the bucket type shower nozzle (19), cylinder (22) connects barometer (24) by pipeline, pressure regulator valve (25), air pump (26), bucket type shower nozzle (19) is by pipeline connection traffic meter (27), retaining valve (30), surplus valve (28), water pump (29), Vib. (21) is installed on the outer wall of rain controller, and the adjustable rain controller of raininess (A) is seated in by support and becomes sloping test stand (B) top.
2. test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition according to claim 1, it is characterized in that: described gradient control device comprises dial plate (14) and pointer (13), dial plate (14) is fixedly mounted on the fixing carrying support, pointer (13) is fixedly mounted on the end of rotating shaft (10), and the center of dial plate (14) and the axle center of last rotating shaft are on same axis.
3. test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition according to claim 1 is characterized in that: lower rotary shaft stop means (2) is fixedly mounted on respectively on the two ends of lower rotary shaft (1).
4. test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition according to claim 1 is characterized in that: lower rotary shaft (1) is by the rotating shaft interlock of gear and motor.
5. test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition according to claim 1 is characterized in that: pressure transducer (20) is arranged in the bucket type shower nozzle (19).
6. test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition according to claim 1 is characterized in that: pressure regulator valve (25) is arranged between barometer (24) and the air pump (26).
7. test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition according to claim 1, it is characterized in that: flowmeter (27) is arranged between bucket type shower nozzle (19) and the retaining valve (30), and surplus valve (28) is arranged between retaining valve (30) and the water pump (29).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101691172A CN101216479B (en) | 2007-12-29 | 2007-12-29 | Test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101691172A CN101216479B (en) | 2007-12-29 | 2007-12-29 | Test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition |
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| CN101216479A CN101216479A (en) | 2008-07-09 |
| CN101216479B true CN101216479B (en) | 2010-12-15 |
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Families Citing this family (24)
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| CN101793657B (en) * | 2010-03-18 | 2012-06-20 | 长安大学 | Test device for scour resistance of base course |
| CN101967817B (en) * | 2010-10-26 | 2011-11-09 | 南京林业大学 | Impact-resisting instrument for water and soil erosion |
| CN102179331B (en) * | 2011-05-04 | 2013-08-21 | 陈洪凯 | Automatic control rainfall simulation device and using method thereof |
| CN102297834B (en) * | 2011-05-27 | 2013-07-31 | 浙江大学 | Dry-wet circulation climate hypergravity simulation system |
| CN102507413B (en) * | 2011-11-14 | 2012-12-05 | 北京交通大学 | Device for testing infiltration capacity of frozen soil side slope during raining |
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| CN103245772B (en) * | 2013-05-13 | 2015-03-25 | 湖南大学 | Indoor analog experiment device for roadbed slope erosion |
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| CN104849431A (en) * | 2015-05-19 | 2015-08-19 | 江西省水土保持科学研究院 | Movable test room for sample collection in rainfall test process |
| CN105241773B (en) * | 2015-10-23 | 2017-10-20 | 三峡大学 | A kind of simulation device of current to reservoir stability rock mass souring under sunshine rainfall and slacking |
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| CN105603930B (en) * | 2016-03-09 | 2018-01-19 | 华北水利水电大学 | The antiskid of eco-concrete bank protection and anti-rain drop erosion stability testing method |
| CN105891037B (en) * | 2016-06-27 | 2018-05-22 | 重庆交通大学 | slope erosion simulation test device |
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| CN110424477A (en) * | 2019-08-15 | 2019-11-08 | 黑龙江大学 | A kind of anti-impact force test equipment of ecological revetment brick |
| CN110534005B (en) * | 2019-09-05 | 2021-09-14 | 山东建筑大学 | Simulation demonstration device for soil liquefaction disasters |
| CN112305165B (en) * | 2020-10-23 | 2022-06-24 | 四川华能泸定水电有限公司 | Simulation model and method for evaluating stability of slope vegetation body |
| CN113324834A (en) * | 2021-05-27 | 2021-08-31 | 同济大学 | Centrifugal model test device and method for h-shaped anti-slide pile reinforced rock pile slope under rainfall condition |
| CN113333203B (en) * | 2021-05-28 | 2022-08-05 | 浙江大学 | Rainfall simulation device component capable of adjusting nozzle position and adjusting method thereof |
| CN114965949B (en) * | 2022-05-12 | 2023-06-30 | 合肥工业大学 | Ecological rock-soil mechanical slope protection test device under rainfall simulation condition |
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| DE4311032A1 (en) * | 1993-03-30 | 1993-10-21 | Juergen Dipl Phys Dr Re Punzel | Double ring tension infiltration measuring device for determining hydraulic conductivity of soil in field - has infiltration system connected to water supply system and is divided into two separate complete concentric infiltration chambers |
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