CN108205057A - Underground engineering blocks the simulation test device that water circulation path causes city ground subsidence - Google Patents
Underground engineering blocks the simulation test device that water circulation path causes city ground subsidence Download PDFInfo
- Publication number
- CN108205057A CN108205057A CN201711279571.3A CN201711279571A CN108205057A CN 108205057 A CN108205057 A CN 108205057A CN 201711279571 A CN201711279571 A CN 201711279571A CN 108205057 A CN108205057 A CN 108205057A
- Authority
- CN
- China
- Prior art keywords
- water
- model
- water tank
- circulation path
- underground engineering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01N33/42—Road-making materials
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses the simulation test devices that a kind of underground engineering blocks water circulation path initiation city ground subsidence, belong to surface collapse experimental rig technical field.Including level of ground water control structure, the model casing (water tank 1, native case, water tank 2) for simulating surface collapse, cyclic water tank, water cycle adjustment structure (iron plate, foundation pit plate), screening channel, level of ground water control structure.Due to there are the process that ease of solubility filler or horizontal remodeling stratum are gradually extended to a macroscopic-void under water seepage effect from a small holes in simulated formation, and overburden layer is constantly thinning thereon and eventually leads to ground subsidence.The present invention considered in horizontal seepage flow emphatically, and the influence and soil cave that water cycle extend soil cave develop to influence of the critical buried-depth cut-out water cycle to ground subsidence.The present invention can directly observe soil cave extension and the process collapsed, and the ground subsidence mechanism of water circulation path initiation is blocked for Study of The Underground engineering.
Description
Technical field
The present invention relates to a kind of for simulating the simulation examination that underground engineering blocks water circulation path and causes city ground subsidence
Experiment device and critical soil cave analogy method belong to surface collapse experimental rig technical field.
Background technology
Physical experiments are to study the important means of urban underground space security problem, at home and abroad extensively should
With, engineering research and design in play an important role.Domestic and foreign scholars are excavated for urban subway tunnel and foundation pit construction
Caused surface collapse problem has carried out fruitful research work, and the model for having developed different scales and purposes tries
Test equipment.
At present, with the fast development of China's urban construction, urban ground collapses accident and frequently occurs, native telluric water cycle
It is objective reality with soil cave, since current many buildings are smashed up reconstruction, some construction materials such as gypsum, calcium carbonate etc. are straight
It connects and is embedded in underground, become the horizontal ease of solubility stratum of thickness unevenness, and due to water seepage effect in soil, those buildings
Material is gradually dissolved in water so as to cause hole is formed in soil, under horizontal seepage effect, hole gradually develop expansion so that
Thickness of earth-fill cover is constantly thinning, and initial stage hole is little, due to the presence of soil arching effect, can't lead to surface collapse, but hole after
Continuous development upwards, covering soil thickness is constantly thinning, and final soil arching effect disappears, and surface collapse occurs.In recent years, it collapsed with landing ground
Sunken accident increases year by year, and correlative study is in the junior stage, it is impossible to fundamentally recognize such accident catastrophe mechanism and
Evolution, so as to propose rationally effective precautionary measures and control method.The patent provides a kind of experimental rig, examinations
Soil water cycle promotes hole development in artwork pseudo level remodeling stratum, and final hole development reaches critical condition, water cycle quilt
Cut-out causes surface collapse, so as to understand and solve the above problems.
The geometric similarity ratio of physical experiments is a crucial technical indicator, and geometric similarity is more too small than what is taken, although
Test material can be saved, be conveniently operated, but the too small model scale of construction can limit soil cave, percolation path arrangement, grasp simultaneously
Make narrow space to be easier to be interfered by extraneous factor, so as to influence test accuracy.Therefore, in the case where condition is permitted,
The larger model geometric likelihood ratio should be used as possible, this just increases difficulty to model test process.Such as large-sized model
Case materials are larger, and when simulating actual condition, earth material dosage and soil cave, percolation path size also accordingly increase.With underground sky
Between develop more and more, it is more and more surface collapse accident occur, is badly in need of following to fully realize the soil water by model test
Ring is cut off the catastrophe mechanism and mechanism of Evolution for causing surface collapse, so as to provide reliable foundation for Prediction of Collapse with Magnetic Resonance Imaging and prevention.
Invention content
Water circulation path initiation city stratum is blocked the technical problem to be solved in the present invention is to provide a kind of underground engineering to collapse
Sunken simulation test device, to fully realize catastrophe mechanism and the mechanism of Evolution that urban ground collapses.
To achieve the above object, the technical solution of this patent is as follows：
A kind of underground engineering blocks the simulation test device that water circulation path causes city ground subsidence, including model water tank
One 1, model clay case 2, model water tank 23, water recycle adjustment structure 4, level of ground water level control structure for water 5, screening channel 6 and follow
Ring water tank 7；Model water tank 1 and model water tank 23 are respectively at the left and right sides of model clay case 2, and one 1 He of model water tank
Model water tank 23 is provided with permeable membrane between model clay case 2；By underground water in model water tank 1 and model water tank 23
The position interval of level control structure for water 5 forms two cavitys；Model water tank 23, which closes in the cavity of model clay case 2 to be equipped with to sieve, to be led to
Road 6；Cyclic water tank 7 enters water tube hose 7-7 by first and connects the cavity closed in model water tank 1 with model clay case 2, recirculated water
Case 7 is connected in model water tank 1 by the first delivery hose 7-8 and the separate cavity of model clay case 2；Cyclic water tank 7 passes through
Two enter the cavity closed in water tube hose 7-9 connection models water tank 23 with model clay case 2, and cyclic water tank 7 passes through the second delivery hose
The 23 interior and separate cavity of model clay case 2 of 9-10 connection models water tank；First delivery hose 7-8, the first delivery hose 7-8,
Two enter and are mounted on conduit switch 7-1 and flowmeter 7-2 on water tube hose 7-9 and the second delivery hose 9-10；Inside model clay case 2
Earth material is loaded, arrangement percolation path is inserted into the earth material in model clay case 2 one end with soil cave, screening channel 3-2 is simulated in earth material,
And percolation path is wrapped in, the other end is fitted and fixed with model water tank 23, and steel plate operating platform is connected on model water tank 1.
Further to improve, the model water tank 1, model clay case 2, model water tank 23 are that organic glass is made.
Further to improve, the perspex panels of the model clay case 2 are equipped with scale, and scale is uniform, and range is
0.5m, wherein range first section 0.1m are using millimeter as precision, and 0.4m is with centimetre for precision behind range.
Further to improve, the simulation of the percolation path trend is using randomized both to shedding iron wire, seepage flow road in the air
The simulation of diameter is simulated using soil and ease of solubility material mixing, wherein the simulation of initial stage soil cave is using salt and native spherical mixing in soil
Object simulates to be formed.
Further to improve, the screening channel 3-2 in model water tank 23 is transparent glazing channel, wherein glazing channel
There are four layers of screening section, screening section is made of wire netting, and four layers of screening section will entirely sieve channel segmentation into 5 grain sizes
Space, each space lower section are connected to a geotechnological cloth bag.
Further to improve, the water cycle adjustment structure 4 includes permeable membrane 4-1, groove 4-2, fixation steel plate 4-3, carves
Spend screw rod 4-6, bearing 4-7, nut 4-4, reverse plate 4-5 and analog board, reverse plate 4-5 connecting screw 4-6 one end, screw rod 4-6
The other end is rotatablely connected by bearing 4-7 and analog board；Nut 4-4 screw threads are set on screw rod 4-6 and consolidate with fixation steel plate 4-3
Fixed connection.
Further to improve, the analog board is Base Pit Excavation Simulation plate 4-8 or excavation of subway analog board 4-9.
Further to improve, the level of ground water control structure 5 includes several small bolt water level baffle 5-1, described small slotting
Pin water level baffle 5-1 consolidates chimeric in the both sides of model casing, these adjacent small bolt water level baffle 5-1 consolidate embedding in-between
It closes.
Further to improve, the small bolt water level baffle 5-1 is bottom-up gradually to shorten, small bolt water level baffle 5-1
Length is 0.5m, 0.05m, 0.02m, 0.01m, 0.005m from big to small.
Specifically, the present invention provides the simulations that a kind of underground engineering blocks water circulation path initiation city ground subsidence
Experimental rig, including earth material, model water tank 1 and model clay case 2, model water tank 23, water cycle adjustment structure 4, level of ground water
Control structure 5, screening channel 6, cyclic water tank 7.
Cyclic water tank 7 has 4 inlet and outlet, respectively left water inlet 7-5), left water outlet 7-6, right water inlet 7-3, the right side goes out
Mouth of a river A7-4.The wherein supply of the left water inlet in 7 bottom of cyclic water tank, water outlet control left side model water tank 1, right water inlet,
The supply of water outlet Controlling model water tank 23, left water inlet connect water pump with right water inlet in water tank.
In order to avoid occurring water level shakiness in groundwater level control structure 5, model water tank 1 and model water tank 23 into
The mouth of a river, the transparent steel wire tube internal diameter size of water outlet are of different sizes, and water inlet bore is more than water outlet, ensure model water tank 1
With stable level in model water tank 23.
The present invention proposes a kind of underground engineering and blocks the simulation test device that water circulation path causes city ground subsidence.
Water cycle can be blocked so as to cause the accident that city ground collapses caused by simulating excavation and excavation of subway, wherein foundation pit is opened
Digging can simulate due to taking accident and dummy level that the artificial dewatering mode such as well-points dewatering is collapsed so as to cause road surface readily soluble
Property remodeling stratum in the soil water cycle in the presence of soil cave extension.The experimental rig of the present invention can realize the practical work of surface collapse
Condition is simulated, and can be carried out different soil conditions, the soil cave of different location and different percolation paths, cut-out feedwater, be cut off draining, cut-out
A variety of physical experiments such as soil water cycle can be used for causing due to the construction of the municipal projects such as excavation of foundation pit, subway work
Water cycle cuts off the simulation test so as to cause surface collapse, while this device can realize the water cycle of whole system.
Legibly see the development course of native Hole for clarity, the present apparatus employs half structure pattern, and by the soil body
Carry out layer dyeing, the Displacement Development situation of the soil body can by transparent glass it is clear see, and shone by high pixel
Cameras record.
The present invention can control underground water taking human as the height of the water level baffle 5-2 in controlling groundwater level control structure 5
Position height.
Water circulating baffle plate in the present apparatus has two pieces, one of baffle A sizes for 1m × 1m simulating excavations so as to
Water cycle is blocked, another block baffle B sizes simulate excavation of subway so as to block water cycle for 1m × 0.2m.Baffle A shielded areas
It is directly proportional with excavation of foundation pit depth, and the shielded area of baffle B is then certain, position is in the position of excavation of subway.
The present invention soil cave extension and water cycle can be blocked or be become according to caused by each operating mode come simulated groundwater cycle
Changing leads to the ground subsidence of critical buried-depth soil cave.For WATER LEVEL CHANGES caused by each condition, and influence water cycle so as to
The operating mode for influencing soil cave extension and collapsing can be simulated.
Description of the drawings
The following drawings is only intended to do schematic illustration and explanation for the present invention, not delimit the scope of the invention.Wherein,
Fig. 1 is a kind of the vertical of experimental rig for simulating underground engineering change water flow path initiation city ground subsidence of the present invention
Body structure diagram.
Fig. 2 is model casing vertical view.
Fig. 3 is screening channel three-view diagram.
Fig. 4 is model clay case side view.
Fig. 5 is the structure diagram for sieving card slot.
Fig. 6 is ground water level baffle schematic diagram.
Fig. 7 is water circulating baffle plate figure.
Fig. 8 is earth material vertical section figure.
Fig. 9 is earth material horizontal sectional view.
Figure 10 is the structure diagram of cyclic water tank.
Reference sign：1 model water tank one, 1-1 cat ladders, 1-2 steel plates operating platform, 1-3 faces steel plate, 2 model clay casees,
2-1 vertical displacements scale, 3 model water tanks two, 3-1 permeable membranes, 4 water cycle adjustment structure, 4-1 permeable membranes, 4-2 grooves, 4-3 are solid
Determine steel plate, 4-4 nuts, 4-5 reverse plates, 4-6 scales screw rod, 4-7 bearings, 4-8 Base Pit Excavation Simulations plate, 4-9 excavation of subway moulds
Intend plate, 5 level of ground water control structures, 5-1 water levels baffle, 6 screening channels, 6-1 screenings card slot, 6-2 earth materials entrance, 6-3 screenings
Grid groove, 6-4 screenings bag, 6-5 Screening Networks, 7 cyclic water tanks, 7-1 conduit switch, 7-2 flowmeters, the right water inlets of 7-3,7-4 are right
The left water inlet of water outlet, 7-5, the left water outlets of 7-6.
Specific embodiment
In order to which the technical features, objects and effects to the present invention are clearly understood from, now the narration of control description of the drawings is of the invention
Specific embodiment.Wherein, identical component uses identical label.
Fig. 1 is shown a kind of underground engineering and blocks the simulation test device that water circulation path causes city ground subsidence
Underground engineering of the present invention is shown roughly in figure and blocks water circulation path initiation city ground subsidence for dimensional structure diagram
The general configuration of simulation test device emphatically shows model casing simulation water cycle and is cut off and causes the feasibility that collapses and water follows
The influence that ring extends initial stage soil cave.Model box size is 1m × 1m × 2m length × width × heights.
As shown in the figure, a kind of underground engineering of the present invention blocks the simulation test that water circulation path causes city ground subsidence
Device generally comprises earth material, model water tank 1, model clay case 2, model water tank 23, water cycle adjustment structure 4, cyclic water tank
7th, channel 6, level of ground water adjustment structure 5 are sieved.Wherein, model water tank 1, model clay case 2, model water tank 23, water cycle are adjusted
Structure 4, level of ground water control structure 5, soil cave simulation, percolation path, screening channel 6 are that underground engineering is blocked water circulation path and drawn
Send out the primary structure of the simulation test device of city ground subsidence, the connection 7 right water outlet of cyclic water tank of 23 water outlet of model water tank
Mouthful, the immersible pump for being positioned over cyclic water tank is connected with model water tank one and model water tank two.That is, the underground engineering of the present invention is blocked
The simulation test device that water circulation path causes city ground subsidence includes at least filling earth material, the model clay for simulating surface collapse
Case 2, the model water tank 1 of level of ground water control and model water tank 23, water cycle adjustment structure 4, soil cave simulation, percolation path
Simulation and screening channel 6, level of ground water control structure 5.
Wherein, model casing is made of the poly (methyl methacrylate) plate of 5mm thickness, and adds ribbed stiffener around model casing surrounding；It is each organic
Glass is connected by a card slot, after connection with organic glass as shown in Fig. 2, be put into card slot, filled card slot with glass cement, is protected
Card connection is abundant, and a face steel plate 1-3 is fixed on the poly (methyl methacrylate) plate of model casing 11, cat ladder 1-1 is welded with, and at top on steel plate
It places one block of steel plate and serves as operating platform 1-2, the steel plate at top is welded with other two blocks of steel plates.
Being transported into for 2 earth material of model clay case can first be not connected to model casing, be transported into part earth material from right side, then reconnect mould
Molding box, compaction in layers when earth material highly reaches percolation path and soil cave height, start embedding soil cave and percolation path.
Percolation path under natural conditions in horizontal ease of solubility remodeling stratum be horizontally orientated to and indefinite, percolation path
There is certain randomness, to simulate percolation path, using to iron wire is shed in the air, treat that it falls on what is substantially formed in model casing plane
One paths carry out ease of solubility under simulating natural condition and remold percolation path in stratum.After path trend determines, with toothpick or carefully
Long rod-shaped objects dig out sulculus along iron wire trend in model casing, and fill salt earth mixtures simulation uniformly mixed already
Percolation path.Percolation path has 4 from top to bottom.The simulation of soil cave fills one on model clay case with salt earth mixtures
Then hemispherical object is carefully covered again with earth material and is slowly gently compacted, be then transported into remaining earth material again as simulation soil cave.Mould
It is connected firmly between molding box and model casing by bolt and glass cement, and the surrounding of model casing has reinforced steel bar ring around reinforcing, from upper
There are 4 layers under, bar diameter 1cm.
Before water pump in ON cycle water tank, the groundwater level of model water tank 11 and model water tank 23 is adjusted in advance
Water level baffle 5-1 in structure is combined to desired height, then permeable membrane is placed on model clay case 2 and model water tank 11 and model
Between water tank 23, the contact surface of soil and water is made to have one layer of antiseepage face, then screening channel is inserted into soil, wraps seepage flow road
Diameter by water level baffle combination to scheduled height, is then turned on water pump.
Screening channel is a transparent glass tube, and glass tube is interior to be divided into 5 by the screening grid formed by 4 layers of wire netting
A grain size space, each grain size space size of adjustment space grain size by adjusting the size for sieving grid.Treat that water cycle is opened
After beginning, water can flow into screening channel from percolation path, eventually pass through and sieve layer by layer, earth material eventually falls into the different screening of grain size
Bag is completed to carry seepage flow the screening of earth material.
Water recycles adjustment structure 4 and realizes connection by the nut 4-4 with being fixed on the steel plate at one top of model water tank, and
Nut 4-4 is fixed, and water recycles adjustment structure 4 under the rotation of reverse plate 4-5, can only be rotated and be moved up and down along nut 4-4,
Again because the connection of water cycle adjustment structure 4 lower part simulation baffle and scale screw rod 4-6 are connected by bearing 4-7, carve
Degree screw rod 4-6 can be twisted arbitrarily with simulation baffle, but when scale screw rod 4-6 is moved up and down by reverse plate 4-5, water follows
Analog board in ring adjustment structure 4 can also follow scale screw rod 4-6 to move up and down, but analog board will not rotate, and this water recycles
Adjustment structure 4 is stepless speed regulation structure, therefore can arbitrarily adjust the vertically movable distance of analog board as needed.
After water cycle starts, the upward development speed of hole is observed by the scale of model clay case, in record unit time
When thickness of earth covering reaches critical buried-depth, the steel plate operation console of water tank 1 is climbed up by cat ladder for the displacement extended up, and rotation is turned round
For turntable so as to which analog board excavation of subway analog board or Base Pit Excavation Simulation plate are moved to specified altitude assignment, that observes soil cave collapses feelings
Condition takes out screening channel from model water tank two, then weighs, records to the grain diameter classified automatically in screening channel
The curve that the speed that hole extends up changes over time in grain composition soil.And observation hole is in the situation of water cycle cut-out
Under, under different-diameter hole, the variation of critical buried-depth.
The present invention underground engineering block water circulation path cause ground subsidence simulation test device another significantly
Feature is largerization of its structure size, and model box size of the invention is 1m × 1m × 2m length × width × heights, relative to entity
For model, the road surface that the model casing of the size is enough really to reflect under actual condition collapses problem.
The present invention can simulate the influence that the change of percolation path water loop direction under various operating modes extends hole, when normal
In the presence of water-head, Water Level Regulating System is adjustably descended to can be realized.Excavation of foundation pit takes well-points dewatering etc. sometimes
Mode reduces the level of ground water height around foundation pit, so as to ensure to construct, some researches show that, when using well-points dewatering, week
It encloses and easily forms a funnelform level of ground water, if soil cave is in below infundibulum, by the percolation path of soil cave
Water cycle can be reverse, this is known as situation 1, if soil cave be in infundibulum top, by the percolation path of soil cave
Water cycle can inversely be flow to end, referred to herein as situation 2.Therefore, when simulation foundation pit reduces foundation pit peripherally using well-points dewatering etc. is similar
During the mode of lower water level, for situation 1, by reducing water can recycle adjustable plate and reduce the height of water level of model water tank 1 from
And it realizes and cheats the change of water seepage flow in soil nearby week caused by excavation of foundation pit, and ensure that the height of water level of model water tank 23 is higher than
The level of ground water height of model clay case；For situation 2, adjustable plate can be recycled by reducing water and reduce the water of model water tank 1
Position height realizes simulation, ensures that the water level of model water tank 23 is less than the ground of model clay case higher than the height of model water tank 1 at this time
Lower height of water level, if foundation pit construction ensures foundation pit construction using the measure of water-stop curtain energy, that can be by reducing water when simulating
Cycle adjustable plate does not change the height of water level of model water tank 1 still.The simulation of water cycle is blocked for tunnel excavation, it can be by water
Iron plate is moved to percolation path mouth with recycling adjustable plate, is cut so as to fulfill the water cycle blocked to simulate tunnel excavation of water cycle
Disconnected operating mode.
In addition, for the experiment of full structure subsurface model, observation experiment phenomenon is facilitated to become particularly difficult.The present invention's
Underground engineering blocks the simulation test device of water circulation path initiation ground subsidence using the thinking of half structure model test, though not
Completely true as full structural model test it can reflect actual condition, but it is determined between full structural model test result
Proportionate relationship and experimental phenomena changing rule it is consistent, can to study ease of solubility remodeling stratum surface soil water cycle be cut
It is disconnected to cause surface collapse catastrophe mechanism and its Evolution.
The present invention proposes a kind of underground engineering of simulating and changes the experimental rig that water flow path causes surface subsidence, the present invention
Experimental rig can carry out different soil conditions, different buried depth, cut-out feedwater, cut off draining, cut-out the soil water cycle etc. it is a variety of
Physical experiments cause surface collapse during use after the completion of being built available for town road since water recycles cut-out
Simulation test, model box size are 1m × 1m × 2m length × width × heights.
Water cycle cuts through the realization of water circulation faults plate, as needed, by rotating spiral shell on steel plate operation console 1-2
Water cycle adjustable plate is dropped to specified altitude assignment by cap.
The adjusting of model casing groundwater level height is by adjusting the water level baffle 5-1 height in level of ground water control structure
It realizes, both sides height of water level can adjust as needed.
Ease of solubility content of material different weight percentage water cycle test in soil is carried out respectively, records same soil cave and similary seepage flow
The sand amount that seepage flow water of the path before collapsing, seepage flow go out can keep the water of same percentage solonchak content to recycle examination later
It tests, records the sand amount that different soil caves go out in seepage flow water of the similary percolation path before collapsing, seepage flow.Each water inlet pipe and water outlet pipe pipe
Mouth has flowmeter, and cistern water level is constant, and the disengaging water of native case can be calculated.
Schematic specific embodiment of the above for the present invention, is not limited to the scope of the present invention, Ren Heben
The technical staff in field, the equal variation made under the premise of the design of the present invention and principle is not departed from, modification are with combining,
The scope of protection of the invention should be belonged to.
Claims (9)
1. a kind of underground engineering blocks the simulation test device that water circulation path causes city ground subsidence, which is characterized in that packet
Include model water tank one (1), model clay case (2), model water tank two (3), water cycle adjustment structure (4), level of ground water water level control
Structure (5), screening channel (6) and cyclic water tank (7)；Model water tank one (1) and model water tank two (3) are respectively at model clay case
(2) the left and right sides, and model water tank one (1) and model water tank two (3) are provided with infiltration between model clay case (2)
Film；It is spaced in model water tank one (1) and model water tank two (3) by level of ground water level control structure for water (5) and forms two cavitys；
Model water tank two (3), which is closed in the cavity of model clay case (2), is equipped with screening channel (6)；Cyclic water tank (7) enters water by first
The cavity closed in hose (7-7) connection model water tank one (1) with model clay case (2), cyclic water tank (7) are soft by the first water outlet
Pipe (7-8) connects in model water tank one (1) and the separate cavity of model clay case (2)；Cyclic water tank (7) enters water tube hose by second
The cavity closed in (7-9) connection model water tank two (3) with model clay case (2), cyclic water tank (7) pass through the second delivery hose
(9-10) is connected in model water tank two (3) and the separate cavity of model clay case (2)；First delivery hose (7-8), the first water outlet are soft
Pipe (7-8), second enter is mounted on conduit switch (7-1) and flowmeter on water tube hose (7-9) and the second delivery hose (9-10)
(7-2)；Filling earth material inside model clay case (2), the interior arrangement percolation path of earth material and simulation soil cave, sieve channel (3-2) one end
It is inserted into the earth material in model clay case (2), and is wrapped in percolation path, the other end is fitted and fixed with model water tank two (3), model
Steel plate operating platform is connected on water tank one (1).
2. underground engineering according to claim 1 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：The model water tank one (1), model clay case (2), model water tank two (3) are that organic glass is made.
3. underground engineering according to claim 1 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：The perspex panels of the model clay case (2) are equipped with scale, and scale is uniform, range 0.5m, wherein range
First section 0.1m is using millimeter as precision, and 0.4m is with centimetre for precision behind range.
4. underground engineering according to claim 1 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：The simulation of the percolation path trend had both shed iron wire using randomized to aerial, and the simulation of percolation path uses
Soil and the simulation of ease of solubility material mixing, wherein the simulation of initial stage soil cave simulates to be formed using the spherical mixture of salt and soil in soil.
5. underground engineering according to claim 1 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：Screening channel (3-2) in model water tank two (3) is transparent glazing channel, and wherein glazing channel has four layers of sieve
Partial cross-section, screening section is made of wire netting, and four layers of screening section will entirely sieve channel segmentation into 5 grain size spaces, often
A geotechnological cloth bag is connected to below a space.
6. underground engineering according to claim 1 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：The water cycle adjustment structure (4) includes permeable membrane (4-1), groove (4-2), fixation steel plate (4-3), scale spiral shell
Bar (4-6), bearing (4-7), nut (4-4), reverse plate (4-5) and analog board, reverse plate (4-5) connecting screw (4-6) one end,
Screw rod (4-6) other end is rotatablely connected by bearing (4-7) and analog board；Nut (4-4) screw thread is set on screw rod (4-6) simultaneously
It is fixedly connected with fixation steel plate (4-3).
7. underground engineering according to claim 6 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：The analog board is Base Pit Excavation Simulation plate (4-8) or excavation of subway analog board (4-9).
8. underground engineering according to claim 1 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：The level of ground water control structure (5) includes several small bolt water level baffles (5-1), the small bolt water level gear
Plate (5-1) consolidates chimeric in the both sides of model casing, these adjacent small bolt water level baffles (5-1) consolidate chimeric in-between.
9. underground engineering according to claim 8 blocks the simulation test device that water circulation path causes city ground subsidence,
It is characterized in that：The small bolt water level baffle (5-1) is bottom-up gradually to be shortened, and small bolt water level baffle (5-1) length is from big
To small for 0.5m, 0.05m, 0.02m, 0.01m, 0.005m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711279571.3A CN108205057B (en) | 2017-12-06 | 2017-12-06 | Simulation test device for urban stratum collapse caused by water cut-off circulation path of underground engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711279571.3A CN108205057B (en) | 2017-12-06 | 2017-12-06 | Simulation test device for urban stratum collapse caused by water cut-off circulation path of underground engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108205057A true CN108205057A (en) | 2018-06-26 |
| CN108205057B CN108205057B (en) | 2020-08-11 |
Family
ID=62603477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711279571.3A Active CN108205057B (en) | 2017-12-06 | 2017-12-06 | Simulation test device for urban stratum collapse caused by water cut-off circulation path of underground engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108205057B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507085A (en) * | 2018-12-29 | 2019-03-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Simulate the true triaxial experimental provision and its method of the multidirectional seepage flow of earth rock material |
| CN111044704A (en) * | 2019-12-03 | 2020-04-21 | 南昌大学 | Pipeline dissolution test equipment and method based on soil body internal erosion |
| CN113567317A (en) * | 2021-06-22 | 2021-10-29 | 济南轨道交通集团有限公司 | Testing device and system for underground water seepage simulation of subway structure |
| CN114441406A (en) * | 2022-01-05 | 2022-05-06 | 中交第四航务工程局有限公司 | Test system and test method for simulating local seepage of waterproof curtain of foundation pit |
| CN115184579A (en) * | 2022-06-20 | 2022-10-14 | 北京科技大学 | Device and method for testing disaster-causing evolution of cavity collapse hidden danger in whole process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784562A (en) * | 2016-03-08 | 2016-07-20 | 同济大学 | Transparent soil test device used for simulating seepage of foundation pit dewatering confined aquifer underground water |
| CN106018736A (en) * | 2016-05-10 | 2016-10-12 | 北京工业大学 | Device for testing surface collapse caused by urban underground pipeline leakage |
| CN106324226A (en) * | 2016-11-03 | 2017-01-11 | 山东大学 | Pouring and injection integrated indoor testing device and method for monitoring underground water seepage and precipitation |
-
2017
- 2017-12-06 CN CN201711279571.3A patent/CN108205057B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784562A (en) * | 2016-03-08 | 2016-07-20 | 同济大学 | Transparent soil test device used for simulating seepage of foundation pit dewatering confined aquifer underground water |
| CN106018736A (en) * | 2016-05-10 | 2016-10-12 | 北京工业大学 | Device for testing surface collapse caused by urban underground pipeline leakage |
| CN106324226A (en) * | 2016-11-03 | 2017-01-11 | 山东大学 | Pouring and injection integrated indoor testing device and method for monitoring underground water seepage and precipitation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507085A (en) * | 2018-12-29 | 2019-03-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Simulate the true triaxial experimental provision and its method of the multidirectional seepage flow of earth rock material |
| CN109507085B (en) * | 2018-12-29 | 2021-05-28 | 水利部交通运输部国家能源局南京水利科学研究院 | True triaxial experiment device and method for simulating multidirectional seepage of soil and stone materials |
| CN111044704A (en) * | 2019-12-03 | 2020-04-21 | 南昌大学 | Pipeline dissolution test equipment and method based on soil body internal erosion |
| CN113567317A (en) * | 2021-06-22 | 2021-10-29 | 济南轨道交通集团有限公司 | Testing device and system for underground water seepage simulation of subway structure |
| CN114441406A (en) * | 2022-01-05 | 2022-05-06 | 中交第四航务工程局有限公司 | Test system and test method for simulating local seepage of waterproof curtain of foundation pit |
| CN115184579A (en) * | 2022-06-20 | 2022-10-14 | 北京科技大学 | Device and method for testing disaster-causing evolution of cavity collapse hidden danger in whole process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108205057B (en) | 2020-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108205057A (en) | Underground engineering blocks the simulation test device that water circulation path causes city ground subsidence | |
| Sato et al. | Influence of location of subsurface structures on development of underground cavities induced by internal erosion | |
| CN108061687A (en) | It is a kind of to study the geotechnical engineering analogue test platform for having Latent destruction face | |
| CN107524138B (en) | Construction method of ultra-deep foundation pit underground diaphragm wall | |
| CN105926686A (en) | Centrifugal model testing system and method studying common character of composite foundation and support structure | |
| CN111337409B (en) | Test device and method for simulating influence of rainfall on seepage dynamic of karst tunnel | |
| CN106197944A (en) | The testing system apparatus of simulation complex condition deep tunnel inrush through faults and method | |
| CN103913289A (en) | Simulating system used for shield tunnel synchronous grouting test and test method thereof | |
| CN108489892B (en) | Submarine shield tunnel excavation test device and method under seepage condition | |
| CN106567416B (en) | The model test apparatus and test method of tunnel excavation in a kind of transparent soil base | |
| CN104900130B (en) | A kind of Foundation Pit Pouring demonstrator and its Foundation Pit Pouring experiment research | |
| JP7236781B2 (en) | Test equipment and test method for simulating the effect on bearing performance of pile foundation due to the presence of cavities at pile ends | |
| CN110387896B (en) | Foundation pit dewatering well design method | |
| CN105946090B (en) | 3D printing tunnel or above goaf pile foundation model test apparatus and Method of printing | |
| CN107024574A (en) | A kind of soil arching effect simulation test device and test method | |
| CN105527404A (en) | Test system and method for simulating ground loss extension in shield tunnel vertical section | |
| CN103389260A (en) | Laboratory simulation test method for researching underground water seepage obstruction caused by pile foundation | |
| CN217820364U (en) | Model test device for inducing ground surface deformation in underground water seepage tunnel construction | |
| CN205636834U (en) | Centrifugal model testing system of research composite foundation and common property of supporting construction | |
| CN108824501A (en) | Simulate the visual test device and method of underwater open caisson construction land movement | |
| CN104153390B (en) | Method for constructing ultra-large underground reinforced concrete frame structure | |
| CN111155542A (en) | PBA construction method tunnel waterproof curtain construction method based on hole guiding technology | |
| CN110288899A (en) | The device and method of homogeneous dykes and dams three dimensional animals cave cause calamity Mechanism simulation | |
| CN211061292U (en) | Microscopic visual model test device for dynamic compaction reinforcement of saturated sandy soil foundation | |
| CN108344839A (en) | A kind of foundation pit Horizontal seals water proof experimental rig and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |