CN107228935A - A kind of passive pile soil arching effect experimental rig based on seepage effect - Google Patents
A kind of passive pile soil arching effect experimental rig based on seepage effect Download PDFInfo
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- CN107228935A CN107228935A CN201710570080.8A CN201710570080A CN107228935A CN 107228935 A CN107228935 A CN 107228935A CN 201710570080 A CN201710570080 A CN 201710570080A CN 107228935 A CN107228935 A CN 107228935A
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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
Abstract
The invention discloses a kind of passive pile soil arching effect experimental rig based on seepage effect, including passive pile pile-soil interaction simulation system and water circulation system, the passive pile pile-soil interaction simulation system includes chamber, mobile support, hanging basket and counterweight, soil sample and simulation stake are placed in the chamber to be used to simulate passive pile pile-soil interaction environment, the chamber connects water circulation system, and seepage flow is simulated by the water circulation system, the chamber is arranged on mobile support, the side connection hanging basket of the chamber, the counterweight is placed in hanging basket, and simulate Thrust of Landslide by increasing and decreasing the counterweight in the hanging basket.First passage of the present invention simulation under the conditions of anhydrous, full water, seepage flow native arch into, development, failure procedure, disclose the mechanism of the soil-water interaction in soil arching effect, the research in terms of pattern foundation pit supporting structure and slope preventing and treating is enriched, the related fields supplemented with existing soil arching effect under seepage effect are theoretical.
Description
Technical field
Seepage flow is based on the present invention relates to the retaining engineering technical field such as foundation ditch, water conservancy, traffic and side slope, more particularly to one kind
The passive pile soil arching effect experimental rig of effect.
Background technology
Passive pile is widely used in the engineering supports such as slope, slope treatment and foundation ditch, its earth-retaining that can be played very well effect
The reason for fruit is soil arching effect --- the Thrust that the soil body occurs in uneven displacement, the soil body after stake reaches pile body, simultaneously
Inter-pile soil body is compacted.Since the presence for confirming soil arching effect is tested by dodge gate from nineteen forty-three Tai Shaji, with ground work
Journey field is constantly deeply developed, and the project data relevant with soil arching effect, experiment and theoretical research are also more and more.With soil
Encircle theoretical continuous progress, achievement in research also gradually tries out, start to instruct, optimize engineer applied, obtain good application
Effect.
Soil arching effect theoretical developments so far, have achieved many outstanding achievements, positive guidance are also played to engineering practice
Effect, but still the problem of have many worth further investigateds.First, be " form " of soil arch, including arch, arch are thick, arch springing
Shape etc..Second, in being the influence of water, many geological disasters, engineering accident, such as landslide failure, the failure of foundation pit bracing, all
Have with water compared with Important Relations.Soft of soil, earth structure strength reduction, same meeting caused by the harmful effect of the water such as seepage flow, piping
Weaken soil arching effect, limit the performance of passive pile earth-retaining function.
At present, the research on soil arching effect is primarily rested on continuous uniform medium, and the soil body is substantially a kind of non-
Continuously, heterogeneous bulk solid.Meanwhile, in the past in the research on Seepage problems, continuous medium hypothesis is mostly based on, directly
The effect of seepage force is added on the continuous soil body and analyzed.The actual conditions that this only flows with fluid in soil body hole are not
Symbol, for considering that soil particle and the penetration mechanism of aqueous phase interaction have compared with big limitation.When seepage flow occurs, it can usually trigger tight
The seepage erosion of weight, that is, flow soil and piping.During generation failure by piping, the fine grained soil in the soil body is pulled away with current, soil skeleton hair
Raw destruction；Also, when fine grained soil is moved with water in bulky grain hole, may silting hole, can then be produced at silting compared with
Big penetration, causes damage of soil body.Influence due to water to the soil body is huge and the mechanism of action is complicated, need to study in full water emphatically
And the soil arching effect under the conditions of seepage flow.
The content of the invention
In view of this, the influence The embodiment provides a kind of seepage flow of research first to soil arching effect, improves soil
The passive pile soil arching effect experimental rig based on seepage effect of arching research.
Embodiments of the invention provide a kind of passive pile soil arching effect experimental rig based on seepage effect, including passive pile
Pile-soil interaction simulation system and water circulation system, the passive pile pile-soil interaction simulation system include chamber, mobile support, hung
Soil sample and simulation stake are placed in basket and counterweight, the chamber to be used to simulate passive pile pile-soil interaction environment, and the chamber connects
The water receiving circulatory system, and seepage flow is simulated by the water circulation system, the chamber is arranged on mobile support, the experiment
The side connection hanging basket of case, the counterweight is placed in hanging basket, and simulates Thrust of Landslide by increasing and decreasing the counterweight in the hanging basket.
Further, the water circulation system includes water tank, support, bucket and water pump, and the water tank is located on support, described
Support it is Height Adjustable, water inlet, delivery port and overfall are provided with the water tank, the water inlet connects water by water pump
Water in bucket is pumped into water tank, the side of the overfall connection test case, by described by bucket, the water pump by water inlet
Overfall spilling water into chamber simulates seepage flow, and the bucket is placed on below the opposite side of chamber, the delivery port connection
Bucket.
Further, the chamber includes being provided with inlet channel above cover body, the side of the cover body, the cover body it is another
Side bottom is provided with water outlet, the cover body to be provided with ejector dozer, the cover body close to water outlet close to the side of inlet channel
Side is provided with filter, and breast boards is provided between the filter and ejector dozer, and the simulation stake is located at breast boards and ejector dozer
Between, the soil sample is placed between breast boards and ejector dozer, and the water flowed out from the overfall flows through inlet channel, soil-shifting successively
Plate, soil sample, simulation stake and breast boards simulation seepage flow, the water flowed out from the breast boards is after filter plate from water outlet stream
Go out, and enter in bucket, the outside of the ejector dozer is provided with force transmission shaft, dynamometer and steering spindle wheel, the two of the steering spindle wheel
End is wound with hawser, the horizontal direction connection force transmission shaft of the hawser, the vertical direction connection hanging basket of the hawser, in the hanging basket
Middle placement counterweight, the dynamometer measures the quality of counterweight, and the hanging basket is moved straight down, and pulls force transmission shaft by hawser
Level Promoting ejector dozer, the ejector dozer so that by thrust pass to soil sample and simulation stake simulation Thrust of Landslide.
Further, transparent cover plate is covered with above the cover body, the top of the transparent cover plate is provided with photographing device, described
Photographing device shoots the surface change of soil sample, and the force transmission shaft connects displacement meter, and the displacement meter monitors the displacement of soil sample, described
Pressure cell and osmometer are embedded with soil sample, the internal stress of the pressure cell monitoring soil sample, the osmometer monitors soil sample
Inside seepage field, the side of the cover body is provided with sealing cable hole and switchable steam vent, the pressure cell and osmometer
Data wire passed by sealing cable hole, by open the steam vent by chamber residual gas discharge.
Further, water hole is provided with the ejector dozer and breast boards, and covered with gauze, the centre of the cover body is set
There is sealing rubber circle, the outside of the force transmission shaft is provided with sealing ring, and the water outlet includes the first lateral road, the first perpendicular road, the second horizontal stroke
Road and the second perpendicular road, first lateral road are located at the upper end flush of the lower section of chamber, second lateral road and chamber, institute
State the first lateral road, the first perpendicular road, the second lateral road and the second perpendicular road to be sequentially communicated, bucket, institute are placed in the lower section in the described second perpendicular road
Inlet channel is stated provided with valve, valve is equipped with below the described first perpendicular road and the second perpendicular road.
Compared with prior art, the invention has the advantages that：First passage simulation is in anhydrous, full water, seepage flow bar
Native arch discloses the mechanism of the soil-water interaction in soil arching effect, enriches slope preventing and treating side into, development, failure procedure under part
The research in face, it is theoretical supplemented with the water-related aspect of existing soil arching effect.
Brief description of the drawings
Fig. 1 is an a kind of schematic diagram of the passive pile soil arching effect experimental rig based on seepage effect of the present invention.
Fig. 2 is a schematic diagram of chamber in Fig. 1.
Fig. 3 is the side view of chamber in Fig. 1.
Fig. 4 is a kind of experiment flow figure of the passive pile soil arching effect experimental rig based on seepage effect of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is further described.
Fig. 1 is refer to, dress is tested The embodiment provides a kind of passive pile soil arching effect based on seepage effect
Put, including passive pile pile-soil interaction simulation system 1 and water circulation system 2.
Passive pile pile-soil interaction simulation system 1 includes chamber 11, mobile support 12, hanging basket 13 and counterweight 14, the examination
Soil sample (not shown) and simulation stake 117 are placed in tryoff 11 to be used to simulate passive pile pile-soil interaction environment, the chamber
11 are arranged on mobile support 12, and the side connection hanging basket 13 of the chamber 11, the counterweight 14 is placed in hanging basket 13, and
Thrust of Landslide is simulated by increasing and decreasing the counterweight 14 in the hanging basket 13.
Chamber 11 connects water circulation system 2, and simulates seepage flow by the water circulation system 2, and water circulation system 2 includes
Water tank 21, support 22, bucket 23 and water pump 24, the water tank 21 are located on support 22, the support 22 it is Height Adjustable.
Water inlet 211, delivery port 212 and overfall 213 are provided with water tank 21, the water inlet 211 is connected by water pump 24
Water in bucket 21 is pumped into water tank 21, the connection of overfall 213 examination by water flowing bucket 21, the water pump 24 by water inlet 211
The side of tryoff 11, by the overfall 213, into chamber 11, spilling water simulates seepage flow, and the bucket 23 is placed on chamber
Below 11 opposite side, the delivery port 211 connects bucket 23.
Fig. 2 and Fig. 3 are refer to, chamber 11 includes cover body 111, and the centre of cover body 111 is provided with sealing rubber circle 1111, cover body
111 top is covered with transparent cover plate (not shown), and the top of the transparent cover plate is provided with photographing device (not shown),
The side of the cover body 111 is described provided with sealing cable hole (not shown) and switchable steam vent (not shown)
Inlet channel 112 is provided with above the side of cover body 111, another side bottom of the cover body 111 is provided with water outlet 113, the cover body
The side being provided with 111 close to the side of inlet channel 112 in ejector dozer 114, the cover body 111 close to water outlet 113 was provided with
Filter plate 115.
Water outlet 112 includes the first lateral road 1121, first and erects road 1122, the second lateral road 1123 and the second perpendicular road 1124, institute
The lower section that the first lateral road 1121 is located at chamber 11, second lateral road 1123 and the upper end flush of chamber 11 are stated, it is described
First lateral road 1121, first erects road 1122, the second lateral road 1123 and the second perpendicular road 1124 and is sequentially communicated, the described second perpendicular road 1124
Lower section place bucket 23, enable current horizontal homogeneous seepage flow, be convenient to clean draining, the described first perpendicular road 1122 and second is erected
The lower section in road 1124 is equipped with valve 1125, and the inlet channel 113 is provided with valve 1125,
Breast boards 116 is provided between filter 115 and ejector dozer 114, simulation stake 117 is located at breast boards 116 and ejector dozer
Between 114, soil sample is placed between breast boards 116 and ejector dozer 114, and pressure cell (not shown) is embedded with soil sample and is oozed
Pressure meter (not shown), the data wire of the pressure cell and osmometer is passed by sealing cable hole, in one embodiment, institute
State and water hole 1141 is provided with ejector dozer 114 and breast boards 116, and covered with gauze (not shown), can effectively prevent
Soil sample is oozed out, while ensureing that current can be uniformly through.
The outside of ejector dozer 114 is provided with force transmission shaft 118, dynamometer 119 and steering spindle wheel 120, and the force transmission shaft 118 is connected
Displacement meter 122, the outside of force transmission shaft 118 is provided with sealing ring 1181, and the two ends of steering spindle wheel 120 are wound with hawser 121, the hawser
121 horizontal direction connection force transmission shaft 118, the vertical direction connection hanging basket 13 of the hawser 121, is placed in the hanging basket 13
Counterweight 14, the dynamometer 119 measures the quality of counterweight 14.
The water flowed out from overfall 213 flows through inlet channel 112, ejector dozer 114, soil sample, simulation stake 117 and breast boards successively
116 simulation seepage flow.
Counterweight 14 is placed into hanging basket 13, the specific quality of counterweight 14 is measured by dynamometer 119, with the increasing of counterweight 14
Plus hanging basket 13 is moved straight down, and the Level Promoting ejector dozer 114 of force transmission shaft 118, the ejector dozer are pulled by hawser 121
114 so by thrust pass to soil sample and simulation stake 117 simulate Thrust of Landslide.
In experiment, the residual gas in chamber 11 is discharged by opening the steam vent, photographing device shoots soil sample
Surface change, displacement meter 122 monitors the displacement of soil sample, the internal stress of pressure cell monitoring soil sample, the osmometer
Monitor the inside seepage field of soil sample.
After experiment, the water flowed out from the breast boards 116 flows out after being filtered through filter 115 from water outlet 113, goes forward side by side
Enter in bucket 23.
Fig. 4 is refer to, a kind of experimental method of the passive pile soil arching effect experimental rig based on seepage effect is as follows：
S1. great soil group to be studied is chosen, soil sample is prepared, and determine the mechanics index of physics of soil sample；The great soil group includes soil
Sample, clay and silt, the mechanics index of physics of the soil sample includes natural density, dry density, grain density, infiltration coefficient, viscous
Poly- power, angle of friction, effective cohesion intercept and effective angle of friction；In one embodiment, great soil group selection soil sample to be studied, takes particle diameter
0.5mm-2mm coarse sand groups are prepared into the soil sample that porosity is 0.7 and tested, and determine its physico-mechanical properties：Density, friction
Angle, infiltration coefficient etc..
S2. type, shape, size and the stake spacing of stake 117 are simulated in design experiment case 11；The simulation stake 117
Type includes embedment stake and cantilever pile, and the shape of the simulation stake 117 includes square and circle, and other shapes also may be used；It should be noted
The size of stake 117 and stake spacing are simulated, if stake spacing is excessive, pile body is undersized, soil arch may be caused not formed, and between stake
It is oversized away from too small, pile body, soil arch bearing capacity can be caused to greatly reinforce again, so that soil arch failure procedure can not be studied.
In one embodiment, simulation stake 117 is from embedment stake, and simulation stake 117 pile body size is 10 × 10cm square piles, length
For 30cm, stake spacing is 35cm.
S3. the step S1 soil samples prepared are filled in simulation passive pile pile-soil interaction environment in chamber 11, and in soil sample
In bury pressure cell or osmometer；
Soil sample is tested when anhydrous, the closely knit soil sample of layering filling in chamber 11, it is ensured that soil sample filling is uniform, soil sample
In bury pressure cell, stand 8h after seal；
Soil sample is tested in full water or seepage flow, side layering filling soil sample, marginal not water, and pressure cell and osmotic pressure are buried in soil sample
Meter, is sealed after standing 12 hours.
In one embodiment, soil sample is tested when anhydrous, often fills the uniform densification of the thick soil samples of 10cm, it is ensured that in chamber 11
Soil sample, which is tried one's best, to be uniformly distributed, and notices that the amount of banketing keeps soil sample porosity 0.7 in chamber, during filling soil sample inside soil sample
Even arrangement pressure cell, while noting pressure cell cabling, it is to avoid cause soil sample in test failure, chamber to fill because cabling is improper
Bi Houxu stand 8 hours release soil sample internal stress, rear seal-cover, transparent cover plate can be capped, set and take pictures on transparent cover plate
Equipment, the photographing device shoots the change on soil sample surface；
Soil sample is tested in full water or seepage flow, during filling soil sample, is needed successively water filling, is pressed while being arranged in soil sample inner homogeneous
Power box and osmometer, monitor soil sample internal water pressure, remaining, test identical when anhydrous with soil sample；
S4. it is further applied load simulation Thrust of Landslide to soil sample, load is realized by applying counterweight 14 in hanging basket 13, sets up water
The circulatory system 2 simulates seepage flow, and by pressure cell, displacement meter 122 and osmometer monitor respectively the stress everywhere of soil sample, displacement with
And pore water pressure change, set up soil sample internal stress, surface-displacement and seepage field；
S5. the internal stress of soil sample under the different water environments of the water environment of soil sample, repeat step S4, and analysis of control is changed
Field, surface-displacement and seepage field, understand the influence of formation, development, failure procedure and the water of soil arching effect wherein；
Soil sample is tested when anhydrous, is applied to soil sample after one-level load, observes the data of pressure cell, until after data stabilization
Apply next stage load, be constantly further applied load step by step, and record Monitoring Data, until larger position occurs for soil sample in chamber 11
Move, local failure, closing presure box, remove the load of application, and porosity is measured by sampling in the diverse location of soil sample, per one-level
Load is 10kg, is defined by the measurement of dynamometer 119.
Soil sample is tested in full water or seepage flow, is applied to soil sample after one-level load, starts water pump, and two grades of lotuses are applied to soil sample
After load, the valve of inlet channel 112 of chamber 11, and the height of the data point reuse water tank 21 according to osmometer, then the row of opening are opened
Stomata, the residual gas in chamber 11 is discharged, and steam vent is closed, and is gradually increased water into the flow velocity of chamber 11 to setting
After constant current speed, the data stabilization of displacement meter 122, pressure cell and osmometer, apply next stage load, and record the water outlet of chamber 11
The water flow velocity that road 113 flows out, when the data that pressure cell is monitored are in reduction trend, the data speedup that displacement meter 122 is monitored is in become big
During trend, soil arch has failed, and stops experiment, and first closing presure box and osmometer stop water circulation system, close chamber 11 and enter
The valve of water channel 112, opens the valve of steam vent and chamber water outlet 113, flows out the water in chamber 11, in chamber 11
Porosity is measured by sampling in diverse location behind water outflow part in soil sample.
S6. type, shape, size and the stake spacing that stake 117 is simulated in chamber 11 are changed, repeat step S3-S5 divides
Analysis it is different simulation stakes 117 under the conditions of seepage flow to native arch into, development, failure mechanism of action；
S7. soil sample, repeat step S2-S6, the soil arching effect probed under different great soil group environment are changed.
This example simulates soil arching effect under 0.45m (i.e. soil sample length after stake) heads and higher seepage velocity, and
Anhydrous, full water condition is contrasted.
In anhydrous conditions, original upload starts, and load is applied to soil sample via force transmission shaft 118, ejector dozer 114, bulldozes
Plate 114 promotes soil sample to move forward, and pressure is gradually transferred in soil sample and simulation stake 117, and stake is simulated in the increase of inside soil body stress
117 undertake load more than inside soil body stress and amplification it is bigger, native arch into；Further increase with load, the displacement of ejector dozer 114
Increase, amplification is small than before, and simulation stake 117 undertakes load and is still more than inside soil body stress, but the two speedup is basically identical, soil
Arch further development, soil arching effect is gradually strengthened；When load increase to a certain extent when soil arching effect reach maximum, bulldoze afterwards
The displacement amplification of plate 114 is increased, and simulation stake 117 undertakes load reduction, and soil arch is in failure stage；But with the displacement of ejector dozer 114
Further increase, soil arch is formed again, and simulation stake 117 undertakes load, but small compared with most preceding undertaken load peak value；Experiment is carried out
When, start with loading, ejector dozer 114 promotes soil sample, the soil body stops compacted due to simulation stake after stake, between stake and thereafter the soil body to
Preceding movement, between stake and the soil body after more than stake of land movement thereafter, there is uneven displacement in the soil body；Inside soil body stress is transferred to
Pile body, native arch is into soil arch arch body region is compacted；Arch after one's death because soil arch encircles body force to do one's bidding by portion's soil body, and displacement is less than between stake and stake
The preceding soil body.
Under the conditions of full water and seepage flow, the formation of soil arch, development, failure regularity with it is anhydrous when it is basically identical, but with dampening
Head increase, i.e. osmotic pressure increase, the load peak value reduction that simulation stake 117 is born, while land movement increases；In loading procedure
In, osmometer record water pressure is in reduction trend mostly, and this is due to that soil sample is progressively compacted before breast boards, and soil sample permeability becomes
Difference, the loss of flood peak becomes big.And the soil body and soil sample centre local location, i.e. soil arch arch springing, arch are in after stake, stress concentration, soil
Body is more closely knit compared with other positions, and water body is lockable and can not drained in hole, and pore water pressure increases on the contrary.Further, with
Native roach exhibition, failure, while water pressure is excessive, causes in the local soil body particle changing of the relative positions, hole water body to be taken advantage of a situation and drains, water pressure
Reduce, thus part osmometer detection data have been fluctuated in overall reduction trend.
First passage of the present invention simulation native arch under the conditions of anhydrous, full water, seepage flow, into, development, failure procedure, is disclosed
The mechanism of soil-water interaction in soil arching effect, enriches the research in terms of the preventing and treating of slope, supplemented with existing soil arching effect and aqueous phase
It is theoretical in terms of pass.
Herein, the involved noun of locality such as forward and backward, upper and lower is to be located at parts in accompanying drawing in figure and zero
The position of part each other is intended merely to the clear of expression technology scheme and conveniently come what is defined.It should be appreciated that the noun of locality
Use should not limit the claimed scope of the application.
In the case where not conflicting, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (7)
1. a kind of passive pile soil arching effect experimental rig based on seepage effect, it is characterised in that including passive pile pile-soil interaction
Simulation system and water circulation system, the passive pile pile-soil interaction simulation system include chamber, mobile support, hanging basket and matched somebody with somebody
Soil sample and simulation stake are placed in weight, the chamber to be used to simulate passive pile pile-soil interaction environment, and the chamber connection water is followed
Loop system, and seepage flow is simulated by the water circulation system, the chamber is arranged on mobile support, and the one of the chamber
Side connects hanging basket, and the counterweight is placed in hanging basket, and simulates Thrust of Landslide by increasing and decreasing the counterweight in the hanging basket.
2. the passive pile soil arching effect experimental rig according to claim 1 based on seepage effect, it is characterised in that described
Water circulation system includes water tank, support, bucket and water pump, and the water tank is located on support, Height Adjustable, the institute of the support
State and water inlet, delivery port and overfall are provided with water tank, the water inlet connects bucket by water pump, and the water pump is by bucket
Water water tank is pumped into by water inlet, the side of the overfall connection test case is overflow by the overfall into chamber
Fluid Dynamics seepage flow, the bucket is placed on below the opposite side of chamber, and the delivery port connects bucket.
3. the passive pile soil arching effect experimental rig according to claim 2 based on seepage effect, it is characterised in that described
Chamber includes being provided with inlet channel above cover body, the side of the cover body, and another side bottom of the cover body is provided with water outlet, institute
State to be provided with ejector dozer, the cover body close to the side of inlet channel in cover body and be provided with filter close to the side of water outlet, it is described
Breast boards is provided between filter and ejector dozer, the simulation stake is located between breast boards and ejector dozer, and the soil sample is placed on
Between breast boards and ejector dozer, the water flowed out from the overfall flows through inlet channel, ejector dozer, soil sample, simulation stake and gear successively
Native template die intends seepage flow, and the water flowed out from the breast boards flows out after filter plate from water outlet, and enters in bucket, institute
The outside for stating ejector dozer is provided with force transmission shaft, dynamometer and steering spindle wheel, and the two ends of the steering spindle wheel are wound with hawser, the hawser
Horizontal direction connection force transmission shaft, the hawser vertical direction connection hanging basket, counterweight, the dynamometry are placed in the hanging basket
The quality of meter measurement counterweight, the hanging basket is moved straight down, and pulls force transmission shaft Level Promoting ejector dozer by hawser, described
Ejector dozer so by thrust pass to soil sample and simulation stake simulation Thrust of Landslide.
4. the passive pile soil arching effect experimental rig according to claim 3 based on seepage effect, it is characterised in that described
Transparent cover plate is covered with above cover body, the top of the transparent cover plate is provided with photographing device, and the photographing device shoots soil sample
Surface changes, and the force transmission shaft connects displacement meter, and the displacement meter monitors in the displacement of soil sample, the soil sample and is embedded with pressure cell
And osmometer, the internal stress of the pressure cell monitoring soil sample, the inside seepage field of the osmometer monitoring soil sample.
5. the passive pile soil arching effect experimental rig according to claim 4 based on seepage effect, it is characterised in that described
Walked provided with sealing cable hole and switchable steam vent, the data wire of the pressure cell and osmometer by sealing the side of cover body
String holes is passed, and is discharged the residual gas in chamber by opening the steam vent.
6. the passive pile soil arching effect experimental rig according to claim 3 based on seepage effect, it is characterised in that described
Water hole is provided with ejector dozer and breast boards, and covered with gauze, the centre of the cover body is provided with sealing rubber circle, the power transmission
The outside of axle is provided with sealing ring.
7. the passive pile soil arching effect experimental rig according to claim 3 based on seepage effect, it is characterised in that described
Water outlet includes the first lateral road, the first perpendicular road, the second lateral road and the second perpendicular road, and first lateral road is located at the lower section of chamber,
Second lateral road and the upper end flush of chamber, first lateral road, the first perpendicular road, the second lateral road and the second perpendicular road are successively
Connect, bucket is placed in the lower section in the described second perpendicular road, and the inlet channel is provided with valve, and the described first perpendicular road and second erect road
Lower section is equipped with valve.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114894234A (en) * | 2022-03-30 | 2022-08-12 | 泰州学院 | Dam osmotic pressure seepage flow monitoring devices for hydraulic engineering |
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| CN114894234B (en) * | 2022-03-30 | 2024-02-20 | 泰州学院 | Dam osmotic pressure seepage flow monitoring device for hydraulic engineering |
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