CN109425723A - Underground water and the simulation of condition of raining slope and monitoring system - Google Patents
Underground water and the simulation of condition of raining slope and monitoring system Download PDFInfo
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- CN109425723A CN109425723A CN201710778090.0A CN201710778090A CN109425723A CN 109425723 A CN109425723 A CN 109425723A CN 201710778090 A CN201710778090 A CN 201710778090A CN 109425723 A CN109425723 A CN 109425723A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 238000004088 simulation Methods 0.000 title claims abstract description 100
- 238000012544 monitoring process Methods 0.000 title claims abstract description 47
- 238000006073 displacement reaction Methods 0.000 claims abstract description 33
- 239000003673 groundwater Substances 0.000 claims abstract description 26
- 230000005484 gravity Effects 0.000 claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 13
- 230000035882 stress Effects 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 238000011160 research Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Food Science & Technology (AREA)
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- Geology (AREA)
- Medicinal Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Immunology (AREA)
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- Testing Or Calibration Of Command Recording Devices (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
A kind of underground water and the simulation of condition of raining slope and monitoring system, including side slope simulation system and the monitoring system to set within it, rainfall system is equipped with above side slope simulation system, side slope simulation system periphery is equipped with ground water regime, and the top of ground water regime is connected with rainfall system.Rainfall system for realizing varying strength above side slope simulation system rainfall；Ground water regime is for realizing side slope simulation system groundwater occurrence and situation of change；Monitoring system is for monitoring side slope simulation system its internal pore pressure, stress, gravity and change in displacement situation under underground water and/or condition of raining.Side slope simulation and the rainfall system in monitoring system, ground water regime and side slope simulation system, both it can work independently, it can be worked again with coordinated, so as to monitor the situation of change of side slope simulation system at different conditions, provide reliable experimental data and technical support for engineering design.
Description
Technical field
The invention belongs to geotechnical engineering fields, and in particular to a kind of underground water and the simulation of condition of raining slope and monitoring system
System.
Background technique
The stability influence of rainfall and groundwater effect side slope is always one of geotechnical engineering circle about research on landslide
Hot issue.The seepage effect of water and the stability of emollescence side slope have important influence.Historical summary statistics,
The Landslide revivification and formation landslide phenomenon of 80%-90% is related with water.In general, rainfall and the seepage flow activity of underground water are to draw
Play the immediate cause that landslide disaster occurs, and factor most complicated and that variation is most frequent.Seepage action of ground water movement and rainfall
Infiltrating can cause slopes internal void water pressure to increase, and certain physical chemistry emollescence is played to rock mass.Gu in view of stream-coupling
Coefficient strong destructiveness, Study of The Underground water and rainfall infiltration side slope are infiltrated-softened to the complexity and rainfall-for closing height
The influence of body becomes particularly significant.The present invention is that " 13 " state key research and development plan emphasis is special
The research achievement that (2016YFC080250504), state natural sciences fund (41472259) are subsidized.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of underground water and the simulation of condition of raining slope and prison
Examining system not only can individually be simulated under underground water or condition of raining, but also can be in underground water and rainfall common conditions
Imitating, so as to monitor side slope simulation system situation of change at different conditions, for the side of effectively research fluid-wall interaction complexity
Slope engineering problem provides reliable experimental assembly.
To achieve the above objectives, the technical solution adopted by the present invention is that: a kind of underground water and condition of raining slope are provided
Simulation and monitoring system, including side slope simulation system and the monitoring system to set within it, it is characterized in that: side slope simulation system
System top is equipped with rainfall system, and side slope simulation system periphery is equipped with ground water regime, the top of ground water regime and rainfall system
Bottom is connected；Rainfall system for realizing varying strength above side slope simulation system rainfall；Ground water regime for realizing
Side slope simulation system groundwater occurrence and situation of change；Monitoring system is for monitoring side slope simulation system in underground water and/or drop
Its internal pore pressure, stress, gravity and change in displacement situation under the conditions of rain.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, side slope simulation system
Cooling system is additionally provided in system, side slope caused by acting on for realizing subzero temperature condition slope simulation system frost heave and thaw collapse becomes
Shape, while by underground water and rainfall slope deformation.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, side slope simulation system
The side slope of system is equipped with device for exerting, changes the shadow of lower underground water and rainfall Slope Stability for simulating different loads
It rings.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, the rainfall system packet
The water-supply-pipe for including water tank and being connected to water tank；Multiple spray heads are arranged in the lower surface of water tank.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, the ground water regime
Including the cabinet with sandwich, the sandwich of the cabinet side is connected to the water-supply-pipe of rainfall system；Box inside wall
It is equipped with the first apopore；Cabinet other side sandwich bottom is equipped with the second apopore, and the lower section of the second apopore is equipped with storage
Hydrophone.
Further, system, surrounding in the cabinet are simulated and monitored to underground water described above and condition of raining slope
Equipped with rotary fan, for simulating the influence of side slope simulation system natural wind and different wind directions, wind speed to rainfall.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, the monitoring system packet
Include multiple sensor for pore water pressure, multiple strain gauges, multiple gravity sensors and multiple displacement meters；It is multiple sensor for pore water pressure, more
A strain gauge, multiple gravity sensors are arranged in side slope simulation system at each measuring point, are used for side slope simulation system
Interior each measuring point pore water pressure, gravity, internal stress are monitored；In multiple displacement meter setting side slope simulation system side slopes, use
It is displaced and is monitored at each measuring point of side slope.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, the rainfall system are led to
The floor space size of the water and water tank that enter water tank was crossed in the unit time to control rainfall, i.e. calculation formula are as follows:Wherein Q is the water into water tank, and T is the time, and A is the floor space of water receiver.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, side slope simulation system
Entirety of uniting infiltration coefficient, is calculated, i.e., using Darcy formulaWherein, Q' is the inflow of the second apopore
The water of water receiver, A are water receiver floor space, and L is side slope simulation system length of slope, and Δ H is water body loss, and T is the time.
Further, underground water described above and the simulation of condition of raining slope and monitoring system, according in monitoring system
The monitoring of each measuring point displacement of displacement meter side slope simulation system side slope calculates, i.e., further according to no guiding principle amount displacement formulaSide slope simulation system side slope maximum displacement can be calculated；Wherein, E is elasticity modulus at maximum displacement measuring point, δmax
For the maximum displacement of side slope measuring point, γ is side slope body bulk density, and H is slope height.
The beneficial technical effect of the present invention lies in:
(1) ground water regime of the invention, rainfall system, side slope simulation system, cooling system not only can work independently, but also can
It is worked with coordinated, so as to monitor the situation of change of side slope simulation system at different conditions, Gu for effectively research stream-
The complicated slope project problem of coupling provides reliable experimental assembly；
(2) rainfall system of the invention can pass through the water and the control of water tank floor space in the control unit time into water tank
Rainfall size processed, and then simulate different rainfall intensity rating conditions slope deformation failure situations；
(3) monitoring system of the invention can be calculated by the monitoring of each measuring point displacement of displacement meter side slope simulation system
Side slope simulation system side slope maximum displacement value under different conditions out, to judge side slope simulation system with the presence or absence of landslide danger
Danger；
(4) ground water regime of the invention, can be existing to simulate by changing the variation of cabinet two sides sandwich water level height
Field groundwater occurrence and situation of change, it is simple and easy.
Detailed description of the invention
Fig. 1 is the main view of side slope simulation of the present invention and monitoring system；
Fig. 2 is the side view of side slope simulation of the present invention and monitoring system.
In figure:
1- tap, 2- water-supply-pipe, 3- pressurizing valve, 4,5- flow-controlled device, the first water check valve of 6-, the second water check valve of 7-, 8- wind
Fan, 9- water tank, 10- spray head, 11- underground water, the first apopore of 12-, 13- side slope, 14- jack, 15- displacement meter, 16- are refined
Gram force plate, 17- metal screen, 18- stopple, the second apopore of 19-, 20- data collecting instrument, 21- computer, 22- water receiver,
23- sensor for pore water pressure, 24- strain gauge, 25- gravity sensor, 26- freezing pipe, 27- water check valve 3,28- cabinet
Specific embodiment
With reference to the accompanying drawing, a specific embodiment of the invention is described in further detail.
It as shown in Figure 1, 2, is underground water and condition of raining slope simulation provided by the invention and monitoring system, including side
Slope simulation system, the rainfall system being arranged in above side slope simulation system, the lithic drainage that side slope simulation system periphery is set
It unites and monitoring system and cooling system inside side slope simulation system is set, the lower end and ground water regime upper end of rainfall system
It is connected, and the two can share water source.
Rainfall system includes water tank 9 and the water-supply-pipe being connected with water tank 92.Multiple spray heads are arranged in the lower surface of water tank 9
10, water is uniformly sprayed from spray head 10.Water tank 9 is equipped with scale, for observing the variation of outflow water.It is successively set on water-supply-pipe 2
There are tap 1,3, two the 4,5, first water check valves 6 of flow-controlled device of pressurizing valve and water meter.First water check valve 6 is arranged inside water tank 9,
For controlling the water for entering water tank.Pressurizing valve 3 and flow-controlled device 4,5 are arranged at outside water tank, for controlling the flow velocity of water.Drop
Rain system mainly passes through pressurizing valve 3 and flow-controlled device 4,5 coutroi velocities, is then sprayed by the spray head on water tank, to realize side
The rainfall of varying strength above the simulation system of slope.
Ground water regime includes the cabinet 28 with sandwich, and the top of the cabinet 28 passes through with 9 bottom end of water tank to be connect
Part connection, junction adds rubber water-proof sealing.The sandwich of cabinet side is connected with the water-supply-pipe 2 of rainfall system, case
The inner sidewall of body is equipped with the first apopore 12, so that the water source in water-supply-pipe 2, which becomes 11 head of underground water, passes through cabinet interlayer
Structure, the first apopore 12 enter side slope simulation system, realize side slope simulation system groundwater occurrence and situation of change.Cabinet
Lateral wall is equipped with the second water check valve 7, for controlling underground water water.The inner sidewall of cabinet other side sandwich is equipped with stopple
18, for blocking water outlet, bottom is equipped with the second apopore 19 and water check valve 27, and the lower section of the second apopore 19 is equipped with water storage
Device 22.Underground water can be flowed into from cabinet side sandwich as a result, be flowed out from cabinet other side sandwich.In order to guarantee to flow
The cleannes of water outlet are equipped with metal screen 17 on the inner wall of the side box body.Transparent refined gram force plate 16, three faces can be used in cabinet
A fixed, face movable connection method, to guarantee the disengaging of side slope simulation system.Surrounding is equipped with the fan 8 of rotation in cabinet, can
Simulating live side slope simulation system different directions natural wind and rainfall is influenced situation by wind direction, improves simulation similarity.Cabinet
It is equipped with scale, for observing the variation of level of ground water.Ground water regime can be by changing cabinet two sides sandwich water as a result,
The height of position simulates live groundwater occurrence and situation of change.
Cooling system includes multiple cryovials 26, is evenly arranged in side slope simulation system at different measuring points, for simulating winter
Freeze frost heave under the conditions of rock and soil slope subzero temperature and thaw collapse effect causes slope deforming, while by underground water and rainfall side
Slope deformation.
Monitoring system includes multiple sensor for pore water pressure 23, multiple strain gauges 24, multiple gravity sensors 25 and multiple
Displacement meter 15；Multiple sensor for pore water pressure 23, multiple strain gauges 24, multiple gravity sensors 25 are evenly arranged on side slope simulation system
On interior each measuring point, for water pressure, gravity, internal stress at each measuring point of side slope simulation system hole；Multiple displacement meters 15 are
Cloth is monitored at each measuring point of side slope 13 of side slope simulation system for being displaced at each measuring point of side slope 13.Multiple pore pressures pass
The data of sensor 23, multiple strain gauges 24, multiple gravity sensors 25 and multiple displacement meters 15 with setting outside cabinet
Acquisition Instrument 20 is connected, and acquires the situation of change of each index inside side slope simulation system in real time.Data collecting instrument 20 and calculating
Machine 21 connects, and transfers data to computer 21, calculates meter 21 by calculating, determines that side slope simulation system is at different conditions
No generation landslide accident.
The side slope 13 of side slope simulation system is equipped with device for exerting, which can be used jack 14, for simulating
Underground water and rainfall impact on slope stability under the conditions of different loads changes.
Side slope simulation system is that the practical slopes situation of binding isotherm and scene is established, i.e., is reconnoitred according to field geology
Data carries out proportion analog material, simulates different materials rock stratum, and has carried out the load mechanics simulated experiment of slope ground body, from
And increase the similarity with on-site actual situations.
In addition, rainfall system of the invention, can pass through the water and water tank floor space in the control unit time into water tank
Rainfall size is controlled, and then simulates different rainfall intensity rating conditions slope deformations, its calculation formula is:Wherein Q is the water into water tank, and T is the time, and A is the floor space of water tank.
Side slope simulation system of the invention can calculate the system entirety infiltration coefficient, i.e., by Darcy formulaWherein, Q' is the water of the second apopore inflow water collector, and A is water receiver floor space, and L is side slope simulation
System length of slope, Δ H are water body loss, and T is the time.It follows that pore water pressure increases, effectively when infiltration coefficient increases
Stress reduces, and Side Slope Safety Coefficient will reduce, and slope stability reduces.
Monitoring system of the invention, according to the monitoring of each measuring point displacement of displacement meter side slope simulation system side slope, further according to
Nondimensional displacement formula calculates, i.e.,So as to calculate side slope simulation system maximum displacement；Wherein, E is maximum
Elasticity modulus at displacement measuring points, δmaxFor the maximum displacement of side slope measuring point, γ is side slope body bulk density, and H is slope height.Thus may be used
Know, when side slope simulation system maximum displacement F increases suddenly, in fact it could happen that landslide accident.
This system operation is briefly described below:
As shown in Figure 1, 2, the first water check valve 6 and the second water check valve 7 are opened, water reaches water by tap 1, water-supply-pipe 2
Case 9 and sandwich, to simulate rainfall and the underground water of varying strength.
When ground water regime is used alone, the first water check valve 6 can be closed, the second water check valve 7 is opened, in sandwich
Carry out the supply of water level；When rainfall system is used alone, the second water check valve 7 can be closed, the first water check valve 6 is opened, in water tank 9
The middle supply for carrying out water；When simulated groundwater and rainfall system collective effect, the second water check valve 7 can be first opened, is carried out
The supply of underground water, then the first water check valve 6 is opened, carry out the supply of rainfall system.
Underground water and condition of raining slope analog simulation and monitoring system of the invention, however it is not limited to above-mentioned specific implementation
Mode, those skilled in the art can derive other implementation manners according to the technical scheme of the present invention, and also belong to skill of the invention
Art innovates range.
Claims (10)
1. a kind of underground water and the simulation of condition of raining slope and monitoring system, including side slope simulation system and set within it
Monitoring system, it is characterized in that: being equipped with rainfall system above the side slope simulation system, side slope simulation system periphery is equipped with underground water
The top of system, ground water regime is connected with rainfall system bottom；Rainfall system for realizing above side slope simulation system not
With the rainfall of intensity；Ground water regime is for realizing side slope simulation system groundwater occurrence and situation of change；Monitoring system is used for
Monitor side slope simulation system its internal pore pressure, stress, gravity and change in displacement situation under underground water and/or condition of raining.
2. underground water as described in claim 1 and the simulation of condition of raining slope and monitoring system, it is characterized in that: the side slope
Cooling system is additionally provided in simulation system, side caused by acting on for realizing subzero temperature condition slope simulation system frost heave and thaw collapse
Slope deformation, while by underground water and rainfall slope deformation.
3. underground water as claimed in claim 2 and the simulation of condition of raining slope and monitoring system, it is characterized in that: the side slope
Simulation system is equipped with device for exerting, changes the shadow of lower underground water and rainfall Slope Stability for simulating different loads
It rings.
4. underground water as described in any one of claims 1-3 and the simulation of condition of raining slope and monitoring system, it is characterized in that:
The rainfall system includes water tank (9) and the water-supply-pipe (2) being connected to water tank (9)；Multiple spray heads are arranged in the lower surface of water tank (9)
(10)。
5. underground water as claimed in claim 4 and the simulation of condition of raining slope and monitoring system, it is characterized in that: the underground
Water system includes the cabinet (28) with sandwich, the sandwich of cabinet (28) side and the water-supply-pipe of rainfall system
(2) it is connected to；Cabinet (28) inner sidewall is equipped with the first apopore (12)；Cabinet (28) other side sandwich bottom is equipped with second
The lower section of apopore (19), the second apopore (19) is equipped with water receiver (22).
6. underground water as claimed in claim 5 and the simulation of condition of raining slope and monitoring system, it is characterized in that: the cabinet
Rotary fan (8) are inside surrounded by, for simulating the influence of side slope simulation system natural wind and different wind directions, wind speed to rainfall.
7. underground water as claimed in claim 6 and the simulation of condition of raining slope and monitoring system, it is characterized in that: the monitoring
System includes multiple sensor for pore water pressure (23), multiple strain gauges (24), multiple gravity sensors (25) and multiple displacement meters
(15)；Multiple sensor for pore water pressure (23), multiple strain gauges (24), multiple gravity sensors (25) are arranged at side slope simulation
In system at each measuring point, it is monitored for measuring point pore water pressure each in side slope simulation system, gravity, internal stress；It is more
On a displacement meter (15) setting side slope simulation system side slope (13), it is monitored for being displaced at side slope (13) each measuring point.
8. underground water as claimed in claim 4 and the simulation of condition of raining slope and monitoring system, it is characterized in that: the rainfall
System controls rainfall by the water and the floor space size of water tank (9) that enter water tank (9) in the unit time, that is, calculates
Formula are as follows:Wherein Q is the water into water tank, and T is the time, and A is the floor space of water tank.
9. underground water as claimed in claim 5 and the simulation of condition of raining slope and monitoring system, it is characterized in that: the side slope
Simulation system entirety infiltration coefficient, is calculated, i.e., using Darcy formulaWherein, Q' is the second apopore
The water of inflow water collector, A are water receiver floor space, and L is side slope simulation system length of slope, and Δ H is water body loss, when T is
Between.
10. underground water as claimed in claim 7 and the simulation of condition of raining slope and monitoring system, it is characterized in that: according to prison
The monitoring of each measuring point displacement of displacement meter side slope simulation system side slope in examining system is calculated further according to no guiding principle amount displacement formula,
I.e.Calculate side slope simulation system side slope maximum displacement；Wherein, E is elasticity modulus at maximum displacement measuring point, δmax
For the maximum displacement of side slope measuring point, γ is side slope body bulk density, and H is slope height.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778090.0A CN109425723A (en) | 2017-09-01 | 2017-09-01 | Underground water and the simulation of condition of raining slope and monitoring system |
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| CN201710778090.0A CN109425723A (en) | 2017-09-01 | 2017-09-01 | Underground water and the simulation of condition of raining slope and monitoring system |
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| CN110441496A (en) * | 2019-07-26 | 2019-11-12 | 河海大学 | A kind of physical model test device and test method for testing Landslide Stability |
| CN110618086A (en) * | 2019-10-15 | 2019-12-27 | 中国矿业大学(北京) | Side slope device for simulating seepage-freeze thawing coupling effect and using method |
| CN111551691A (en) * | 2020-05-18 | 2020-08-18 | 广西大学 | Multifunctional side slope model test device |
| CN111551694A (en) * | 2020-06-24 | 2020-08-18 | 中国有色金属工业昆明勘察设计研究院有限公司 | Slope instability experimental device and method with rainfall and overload as inducers |
| 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 |
| CN115876980A (en) * | 2022-12-29 | 2023-03-31 | 长江大学 | Freezing-thawing landslide test device under coupling action of underground water erosion and river lateral erosion |
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| CN111551691A (en) * | 2020-05-18 | 2020-08-18 | 广西大学 | Multifunctional side slope model test device |
| 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 |
| CN111551694A (en) * | 2020-06-24 | 2020-08-18 | 中国有色金属工业昆明勘察设计研究院有限公司 | Slope instability experimental device and method with rainfall and overload as inducers |
| CN115876980A (en) * | 2022-12-29 | 2023-03-31 | 长江大学 | Freezing-thawing landslide test device under coupling action of underground water erosion and river lateral erosion |
| CN115876980B (en) * | 2022-12-29 | 2024-01-09 | 长江大学 | Freezing and thawing landslide test device under coupling effect of groundwater erosion and river side erosion |
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Application publication date: 20190305 |