CN107102119A - A kind of slope and land slide experimental rig - Google Patents
A kind of slope and land slide experimental rig Download PDFInfo
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- CN107102119A CN107102119A CN201710368835.6A CN201710368835A CN107102119A CN 107102119 A CN107102119 A CN 107102119A CN 201710368835 A CN201710368835 A CN 201710368835A CN 107102119 A CN107102119 A CN 107102119A
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Abstract
The invention discloses a kind of slope and land slide experimental rig, described device includes model framework system, axial loading device, underground water and rainfall simulation system and servo-control system, the model framework system includes loading beam, reaction beam, bolster stake, rear wall, side wall and bottom plate, preparation and various test simulations for model sample, are fabricated by using steel structure splicing；Axial loading device drives ball screw auxiliary structure using reductor, and screw mandrel rotation nut vertical movement, nut leading portion has strain gauge；Servo-control system is used for the size for controlling the axial loading device to carry out adjusting force；Underground water and rainfall simulation system are used for simulated groundwater infiltration test and rain test, and by regulating system pressure come control system flow.The device can carry out similitude simulated test in large-scale slope project room, so that the Dynamic Evolution of side slope unstability is tracked, analyzes and studied.
Description
Technical field
The present invention relates to slope project experimental technique field, more particularly to a kind of slope and land slide experimental rig.
Background technology
Landslide is the sliding geological phenomenon that slope Rock And Soil occurs along the shear breakage for being used to lead to, with world population
Continuous growth, human being's production life space constantly extend, using economic and technical condition for support engineering activity further frequently
It is numerous, influenceed, landslide disaster takes place frequently, wherein being no lack of major landslip disaster, caused huge by the factor of Global climate change in addition
Big casualties and property loss, so far, as long as there is the area of mankind's production and living activity, all occurred landslide calamity
Evil.
Mine Slope Stability is that must face one of China's surface mine particularly deep mining surface mine is great
Problem, studies the inherent failure mechanism in landslide and feature, is Mine Safety in Production field so as to make counter-measure in advance
Important research direction and key technique.Slope instability experiment of the prior art, often using scaled down model
Heap is carried out in constrained space level ground to build, due to reduced scale back boundary condition, particularly gravitational effect, really by similar
Property simulation occur in that slope and land slide phenomenon almost without document and report, which greatly limits side slope engineering unstable failure machine
The understanding of reason and exploration；Simultaneously for tradition come down test site, can not generally also accomplish simultaneously underground water, precipitation, overlying burden,
Slopes material constitutes the landslide simulation under different variable collective effects, causes simulation error larger, it is impossible to the actual landslide of reaction
Destruction situation.
The content of the invention
It is an object of the invention to provide a kind of slope and land slide experimental rig, said apparatus can carry out large-scale slope project room
Interior similitude simulated test, so that the Dynamic Evolution of side slope unstability is tracked, analyzes and studied, it is that slope instability is broken
The early warning risen before bad promptly and accurately provides technical support.
A kind of slope and land slide experimental rig, described device includes model framework system, axial loading device, underground water and drop
Rain simulation system and servo-control system, wherein：
The model framework system includes loading beam, reaction beam, bolster stake, rear wall, side wall and bottom plate, for model sample
Preparation and various test simulations, be fabricated by using steel structure splicing；
Further, the loading beam can be in certain distance slidably under the drive of screw lift, and can root
Loading position is adjusted according to the actual conditions during experiment of landslide, type of drive drives for servomotor；
The reaction beam has two, installed in the top of the loading beam, is linked together by bolt with bolster stake；
The bolster stake is connected with each other with bottom plate, reaction beam, constitutes the reaction frame of internal stress, and the bolster stake is main
Horizontal drum expansive force when pulling force and model side when bearing axially loaded are roused；
The bottom plate bears the axial stress that model sample strip is come；
The rear wall and side wall are formed using 50B I-shaped weldings, are connected with each other with the bolster stake and bottom plate, than described
The height of model sample will height；
The rear wall and side wall use transparent plexiglass plate with the inner side that the model sample is in contact, and this is transparent organic
Glass plate is arranged on the shaped steel on the inside of wall by screw, and sidewise restraint is provided for the model sample；
The axial loading device drives ball screw auxiliary structure, screw mandrel rotation nut vertical movement, spiral shell using reductor
Female leading portion has strain gauge；
The servo-control system includes computer, controller, servo-driver and sensor, for controlling the axial direction
Loading device carrys out the size of adjusting force, wherein：
Control command is sent to the controller by the computer, the controller according to the sensor send back come
The order data that sends of data and the computer carry out comparing calculation, the servo-driver is sent according to result of calculation
Control instruction, the servo driver drives screw mandrel action so that the numerical value of the sensor changes；This numerical value is passed again
The controller is sent to, servo closed control system is formed；
The underground water and rainfall simulation system include storage tank, booster pump, pressure regulator valve, supply channel, shower nozzle and pressure
Flow instrument, for simulated groundwater infiltration test and rain test, and by regulating system pressure come control system flow.
The loading beam is formed using 100mm carbon constructional quality steel Q345 welding processings, is internally provided with reinforcement, is used
In to model sample application axial load.
The shower nozzle of the underground water and rainfall simulation system includes three groups, and red shower nozzle is first group, and blue shower nozzle is the
Two groups, black nozzle is the 3rd group, and every group of shower nozzle is individually connected with flexible plastic tube, can independent control each group spray equipment.
The shower nozzle is made of stainless steel tube, and shower nozzle is sprayed water upwards, at top provided with blocking, using blocking so that current
Naturally reflect, form rainfall.
Booster pump is also equipped with the water source of the underground water and rainfall simulation system, for controlling rainfall pressure and water
Amount.
It is rubble positioned at the bottom 20cm scopes of model framework system in the underground water and rainfall simulation system, it is right
There is water inlet side bottom surface, and when water level exceedes at the model sample toe, whole horizontal waterline from bottom to top rises overally,
So as to simulate unstability situation of the side slope in the case of level of ground water rising.
The sensor of the servo-control system includes axial load sensor and displacement transducer, wherein：
The axial load sensor is used for the load measurement of axial direction, is radial load sensor；
Institute's displacement sensors are stay-supported type displacement sensor.
As seen from the above technical solution provided by the invention, said apparatus can carry out phase in large-scale slope project room
Like property simulated test, so that the Dynamic Evolution of side slope unstability is tracked, analyzes and studied, slope and land slide destruction is obtained
From being formed, stably, the dynamic space-time Evolution that breeds, develop, destroy and the form of expression, and according to side slope unstable failure
The understanding of rule and feature, research can be used for facing the method for sliding early warning before slope instability, thus to be risen before slope instability destruction and
When accurate early warning technical support is provided.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, being used required in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
The slope and land slide experimental rig overall structure diagram that Fig. 1 is provided by the embodiment of the present invention；
Rear wall and the structural representation of side wall that Fig. 2 is provided by the embodiment of the present invention；
Fig. 3 is provided the structural representation of axial loading device by the embodiment of the present invention；
Fig. 4 is the horizontal layout schematic diagram of rainfall shower nozzle described in the embodiment of the present invention；
Underground water and the overall schematic of rainfall simulation system that Fig. 5 is provided by the embodiment of the present invention；
Fig. 6 is provided the schematic diagram of simulated groundwater rising by the embodiment of the present invention；
Fig. 7 is provided the overall schematic of Ground arrangement by the embodiment of the present invention.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing, is as shown in Figure 1 present invention implementation
The slope and land slide experimental rig overall structure diagram that example is provided, described device includes model framework system, axially loaded dress
Put, underground water and rainfall simulation system and servo-control system, wherein：
The model framework system includes loading beam, reaction beam, bolster stake, rear wall, side wall and bottom plate, for model sample
Preparation and various test simulations, axial maximum load ability is fabricated by up to 20000kN using steel structure splicing；
Further, the loading beam can be in certain distance slidably under the drive of screw lift, and can root
Loading position is adjusted according to the actual conditions during experiment of landslide, type of drive drives for servomotor；In the specific implementation, the loading beam
Formed using 100mm carbon constructional quality steel Q345 welding processings, be internally provided with reinforcement, for applying axle to model sample
To load.
The reaction beam has two, installed in the top of the loading beam, is linked together by bolt with bolster stake；
The bolster stake is connected with each other with bottom plate, reaction beam, constitutes the reaction frame of internal stress, and the bolster stake is main
Horizontal drum expansive force when pulling force and model side when bearing axially loaded are roused；
The bottom plate bears the axial stress that model sample strip is come, and stress distribution is uneven when being loaded due to model sample,
From stress progressively reduces forward close to rear wall displacement, thus during structure welding the distribution of gusset be also it is uneven, being capable of maximum
The utilization rate and reasonable structure of the increase material of limit, while unsplit bed(-)plate is oversized, can have any problem in transportation, can
With using Split type structure design, to scene after it is assembled integral；
The rear wall and side wall are formed using 50B I-shaped weldings, are connected with each other with the bolster stake and bottom plate, than described
The height of model sample will height；The structural representation of rear wall that the embodiment of the present invention provided and side wall is illustrated in figure 2, it is described
Wall and side wall use transparent plexiglass plate with the inner side that the model sample is in contact afterwards, and the transparent plexiglass plate passes through spiral shell
Nail is arranged on the shaped steel on the inside of wall, and sidewise restraint is provided for the model sample；Utilize the Perspex and record
Deformation and infiltration situation of the model sample in loading procedure；
The axial loading device drives ball screw auxiliary structure, screw mandrel rotation nut vertical movement, spiral shell using reductor
Female leading portion has strain gauge, is driven using servomotor；Here, ball screw is to use big load screw mandrel, be the advantage is that
It can for a long time load, stability is high, no oil leakage phenomenon, good reliability, fault rate is low and maintenance cost is low, be illustrated in figure 3 this
Inventive embodiments provide the structural representation of axial loading device, can make control speed using servomotor, and positional precision is non-
It is often accurate, voltage signal can be converted into torque and rotating speed with the speed of service of drive control belt.Servo motor rotor turns
Speed by input signal control, and can fast reaction, in automatic control system, as executive component, and normal with the electromechanical time
The characteristics such as the high, pickup voltage of the small, linearity of number, the angular displacement that the electric signal received can be converted on motor reel or angle speed
Degree output.
The servo-control system includes computer, controller, servo-driver and sensor, for controlling the axial direction
Loading device carrys out the size of adjusting force, wherein：
Control command is sent to the controller by the computer, the controller according to the sensor send back come
The order data that sends of data and the computer carry out comparing calculation, the servo-driver is sent according to result of calculation
Control instruction, the servo driver drives screw mandrel action so that the numerical value of the sensor changes；This numerical value is passed again
The controller is sent to, servo closed control system is formed.
During implementing, the sensor includes axial load sensor and displacement transducer, wherein：
The axial load sensor is used for the load measurement of axial direction, is radial load sensor, and precision is high, stability
It is good, it is corrosion-resistant；Institute's displacement sensors are stay-supported type displacement sensor, and range is big, precision is high, stability is high, reliability is high, number
Word pulse is exported, and antijamming capability is extremely strong, low in energy consumption.
The underground water and rainfall simulation system include storage tank, booster pump, pressure regulator valve, supply channel, shower nozzle and pressure
Flow instrument, for simulated groundwater infiltration test and rain test, and by regulating system pressure come control system flow.Such as
Fig. 4 show the horizontal layout schematic diagram of rainfall shower nozzle described in the embodiment of the present invention, and the shower nozzle includes three groups, and red shower nozzle is the
One group, blue shower nozzle is second group, and black nozzle is the 3rd group, and every group of shower nozzle is individually connected with flexible plastic tube, can independent control
Each group spray equipment.
The overall schematic of underground water that the embodiment of the present invention provided and rainfall simulation system is illustrated in figure 5, it is described
Shower nozzle is made of stainless steel tube, and shower nozzle is sprayed water upwards, at top provided with blocking, under blocking so that current reflect naturally
Come, form rainfall, so as to carry out simulated precipitation experiment to model.
Booster pump is also equipped with the water source of the underground water and rainfall simulation system, for controlling rainfall pressure and water
Amount.
The schematic diagram that the embodiment of the present invention provides simulated groundwater rising is illustrated in figure 6, with reference to Fig. 6：Positioned at model
The bottom 20cm scopes of frame system are rubble, and right side bottom surface has water inlet, when water level exceedes at the model sample toe,
Whole horizontal waterline from bottom to top rises overally, so as to simulate unstability situation of the side slope in the case of level of ground water rising.Separately
Outside, can also be by installing booster pump at water source, to control water-filling pressure and water.
From above-described embodiment：The device can simulate different landslide risk factors, such as rainfall, freeze thawing, earthquake, people
Work engineering activity etc..In addition, main in the test site arrangement of the device include four regions：Device control area, material heap
Put area, Ji Kuichu areas of model area.The overall schematic that the embodiment of the present invention provides Ground arrangement is illustrated in figure 7, with reference to figure
7：Device control area is used to install model test armamentarium, machinery etc.；Placing of material area is used to stack pattern experiment
Use all material；Model area, which is used to place, does pattern, around provided with gutter；Kui Chu areas provide for the soil body behind landslide
Place, the inside is provided with three road gutters, furrow width 50cm, deep 50cm, the gradient 0.3%, by the gutter gradient at abutment wall on the outside of place
0.3%, sedimentation basin is can be used as, and a section silt groove is provided with, muddy water natural sedimentation can be made.
In summary, the device that the embodiment of the present invention is provided can carry out similitude simulation examination in large-scale slope project room
Test, so that the Dynamic Evolution of side slope unstability is tracked, analyzes and studied, obtain slope and land slide and destroy from formation, surely
The dynamic space-time Evolution and the form of expression determine, breed, develop, destroyed, and according to side slope unstable failure rule and spy
The understanding levied, research can be used for the method for facing sliding early warning before slope instability, so as to be risen promptly and accurately before being destroyed for slope instability
Early warning provides technical support；The device will be for work such as landslide natural calamity, Mine Safety in Production, landslide accident emergency management and rescue
Important guaranteeing role is played, with more important realistic meaning.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (7)
1. a kind of slope and land slide experimental rig, it is characterised in that described device include model framework system, axial loading device,
Underground water and rainfall simulation system and servo-control system, wherein：
The model framework system includes loading beam, reaction beam, bolster stake, rear wall, side wall and bottom plate, the system for model sample
Standby and various test simulations, are fabricated by using steel structure splicing；
Further, the loading beam can be in certain distance slidably under the drive of screw lift, and can be according to cunning
Actual conditions adjustment loading position when slope is tested, type of drive drives for servomotor；
The reaction beam has two, installed in the top of the loading beam, is linked together by bolt with bolster stake；
The bolster stake is connected with each other with bottom plate, reaction beam, constitutes the reaction frame of internal stress, and the bolster stake is primarily subjected to
Horizontal drum expansive force when pulling force and model side when axially loaded are roused；
The bottom plate bears the axial stress that model sample strip is come；
The rear wall and side wall are formed using 50B I-shaped weldings, are connected with each other with the bolster stake and bottom plate, than the model
The height of sample will height；
The rear wall and side wall use transparent plexiglass plate with the inner side that the model sample is in contact, the transparent organic glass
Plate is arranged on the shaped steel on the inside of wall by screw, and sidewise restraint is provided for the model sample；
The axial loading device is driven before ball screw auxiliary structure, screw mandrel rotation nut vertical movement, nut using reductor
Section has strain gauge；
The servo-control system includes computer, controller, servo-driver and sensor, described axially loaded for controlling
Device carrys out the size of adjusting force, wherein：
Control command is sent to the controller by the computer, the controller according to the sensor send back come number
Comparing calculation is carried out according to the order data that the computer is sent, control is sent to the servo-driver according to result of calculation
Instruction, the servo driver drives screw mandrel action so that the numerical value of the sensor changes；This numerical value is conveyed once again to
The controller, forms servo closed control system；
The underground water and rainfall simulation system include storage tank, booster pump, pressure regulator valve, supply channel, shower nozzle and pressure flow
Instrument, for simulated groundwater infiltration test and rain test, and by regulating system pressure come control system flow.
2. slope and land slide experimental rig according to claim 1, it is characterised in that
The loading beam is formed using 100mm carbon constructional quality steel Q345 welding processings, is internally provided with reinforcement, for pair
Model sample applies axial load.
3. slope and land slide experimental rig according to claim 1, it is characterised in that the underground water and rainfall simulation system
Shower nozzle includes three groups, and red shower nozzle is first group, and blue shower nozzle is second group, and black nozzle is the 3rd group, and every group of shower nozzle is independent
Connected with flexible plastic tube, can independent control each group spray equipment.
4. the slope and land slide experimental rig according to claim 1 or 3, it is characterised in that
The shower nozzle is made of stainless steel tube, and shower nozzle is sprayed water upwards, at top provided with blocking, using blocking so that current are natural
Reflection is got off, and forms rainfall.
5. slope and land slide experimental rig according to claim 1, it is characterised in that in the underground water and rainfall simulation system
Water source at be also equipped with booster pump, for controlling rainfall pressure and water.
6. slope and land slide experimental rig according to claim 1, it is characterised in that in the underground water and rainfall simulation system
In, the bottom 20cm scopes positioned at model framework system are rubble, and right side bottom surface has water inlet, when water level is tried more than the model
When at sample toe, whole horizontal waterline from bottom to top rises overally, so as to simulate side slope in the case of level of ground water rising
Unstability situation.
7. slope and land slide experimental rig according to claim 1, it is characterised in that the sensor bag of the servo-control system
Axial load sensor and displacement transducer are included, wherein：
The axial load sensor is used for the load measurement of axial direction, is radial load sensor；
Institute's displacement sensors are stay-supported type displacement sensor.
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| CN201710368835.6A CN107102119A (en) | 2017-05-23 | 2017-05-23 | A kind of slope and land slide experimental rig |
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| CN201710368835.6A CN107102119A (en) | 2017-05-23 | 2017-05-23 | A kind of slope and land slide experimental rig |
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Cited By (13)
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| CN107561246A (en) * | 2017-09-29 | 2018-01-09 | 中冶交通建设集团有限公司 | A kind of slope model test device |
| CN107843447A (en) * | 2017-12-05 | 2018-03-27 | 中国矿业大学(北京) | A kind of block bulk material slope stability simulation test device and test method |
| CN108827802A (en) * | 2018-09-07 | 2018-11-16 | 长沙理工大学 | A kind of embankment power wet-chemical model experimental provision |
| CN109490512A (en) * | 2018-12-26 | 2019-03-19 | 西南交通大学 | A kind of base covers type slope instability simulation test device |
| CN110133214A (en) * | 2019-05-15 | 2019-08-16 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of experimental rig for the cold area's canal for water conveyance fluctuation in stage of centrifugal field Imitating |
| CN110553910A (en) * | 2019-07-10 | 2019-12-10 | 中国科学院地质与地球物理研究所 | Slope normal position loading device |
| CN110716029A (en) * | 2019-10-29 | 2020-01-21 | 三明学院 | Rainfall landslide model test system |
| CN111389611A (en) * | 2020-03-20 | 2020-07-10 | 重庆广播电视大学重庆工商职业学院 | Detachable rainfall simulation device and method for building |
| CN111627279A (en) * | 2020-05-19 | 2020-09-04 | 中国安全生产科学研究院 | Test system for simulating whole process of landslide and debris flow disaster chain |
| CN111721913A (en) * | 2020-05-23 | 2020-09-29 | 中国科学院武汉岩土力学研究所 | Comprehensive model device with rainfall and underground water level tests |
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| CN114279810A (en) * | 2020-09-27 | 2022-04-05 | 中车唐山机车车辆有限公司 | Testing device and measuring method for pull-out force of connector plug |
| CN117007506A (en) * | 2023-08-16 | 2023-11-07 | 北方工业大学 | Tailing dam loading test method under influence of lens body |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561246A (en) * | 2017-09-29 | 2018-01-09 | 中冶交通建设集团有限公司 | A kind of slope model test device |
| CN107843447A (en) * | 2017-12-05 | 2018-03-27 | 中国矿业大学(北京) | A kind of block bulk material slope stability simulation test device and test method |
| CN108827802A (en) * | 2018-09-07 | 2018-11-16 | 长沙理工大学 | A kind of embankment power wet-chemical model experimental provision |
| CN109490512A (en) * | 2018-12-26 | 2019-03-19 | 西南交通大学 | A kind of base covers type slope instability simulation test device |
| CN110133214B (en) * | 2019-05-15 | 2021-07-13 | 水利部交通运输部国家能源局南京水利科学研究院 | Test device for simulating water level rise and fall of cold region water delivery channel under centrifugal field |
| CN110133214A (en) * | 2019-05-15 | 2019-08-16 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of experimental rig for the cold area's canal for water conveyance fluctuation in stage of centrifugal field Imitating |
| BE1026548B1 (en) * | 2019-07-10 | 2021-02-05 | Inst Geology & Geophysics Cas | A SLOPE IN SITU LOADING DEVICE |
| CN110553910A (en) * | 2019-07-10 | 2019-12-10 | 中国科学院地质与地球物理研究所 | Slope normal position loading device |
| WO2021003689A1 (en) * | 2019-07-10 | 2021-01-14 | 中国科学院地质与地球物理研究所 | Side slope in-situ loading device |
| CN110716029A (en) * | 2019-10-29 | 2020-01-21 | 三明学院 | Rainfall landslide model test system |
| CN111389611A (en) * | 2020-03-20 | 2020-07-10 | 重庆广播电视大学重庆工商职业学院 | Detachable rainfall simulation device and method for building |
| CN111627279A (en) * | 2020-05-19 | 2020-09-04 | 中国安全生产科学研究院 | Test system for simulating whole process of landslide and debris flow disaster chain |
| CN111721913A (en) * | 2020-05-23 | 2020-09-29 | 中国科学院武汉岩土力学研究所 | Comprehensive model device with rainfall and underground water level tests |
| CN114279810A (en) * | 2020-09-27 | 2022-04-05 | 中车唐山机车车辆有限公司 | Testing device and measuring method for pull-out force of connector plug |
| CN114279810B (en) * | 2020-09-27 | 2024-01-12 | 中车唐山机车车辆有限公司 | Connector plug pulling-out force testing device and pulling-out force measuring method |
| CN113671155A (en) * | 2021-08-24 | 2021-11-19 | 上海交通大学 | Side slope rock-soil body electrical parameter spatial and temporal evolution test system and method |
| CN113671155B (en) * | 2021-08-24 | 2023-02-17 | 上海交通大学 | Side slope rock-soil body electrical parameter spatial and temporal evolution test system and method |
| CN117007506A (en) * | 2023-08-16 | 2023-11-07 | 北方工业大学 | Tailing dam loading test method under influence of lens body |
| CN117007506B (en) * | 2023-08-16 | 2024-04-02 | 北方工业大学 | Tailing dam loading test method under influence of lens body |
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Application publication date: 20170829 |