CN208270359U - The test device of pipeline water flow scouring effect in a kind of simulation Rock And Soil - Google Patents
The test device of pipeline water flow scouring effect in a kind of simulation Rock And Soil Download PDFInfo
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- CN208270359U CN208270359U CN201820609457.6U CN201820609457U CN208270359U CN 208270359 U CN208270359 U CN 208270359U CN 201820609457 U CN201820609457 U CN 201820609457U CN 208270359 U CN208270359 U CN 208270359U
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Abstract
The utility model relates to a kind of measuring technologies of influencing factors for slope stability, specifically disclose a kind of test device for simulating pipeline water flow scouring effect in Rock And Soil, there is the simulation rock-soil layer of straight through tube including bottom plate and the inside being set on bottom plate, bottom plate includes fixing end and lift side, fixing end is fixed by trunnion axis and can be rotated around trunnion axis, lift side is connected with halliard, halliard is wound on wire spool after passing through fixed pulley, passes through the height of rotation wire spool continuously adjustable lift side in the vertical direction；Straight through tube in simulation rock-soil layer includes upstream port and downstream port, and downstream port, which is configured with, to be connected with the matched plug that blocks water of port shape, upstream port with water source.The utility model has the advantages that: the measurement suitable for water flow under heavy rainfall or drainage condition to straight through tube wall surface drag rock-soil layer, to provide reference and contribution for influence of the pipeline drag to Rock And Soil unstability under quantization heavy rainfall or drainage condition.
Description
Technical field
The utility model relates to a kind of measuring technologies of influencing factors for slope stability, especially a kind of for measuring ground
The test device that body pipeline stream influences stability of rock-soil body.
Background technique
Straight through tube, non-through pipeline and hole in Rock And Soil collectively form a complicated porous network system.Its
In, straight through tube is the predominating path mutually converted between underground water and surface water, is that waterpower joins between underground water and Rock And Soil
The boundary condition that the important channel and Rock And Soil unstable failure of system are usually tracked.Rock And Soil pipeline stream greatly affected friendship
The construction safety and normal operation of the engineerings such as logical, water conservancy and hydropower and mine, study the extensive pass by engineering circles and academia
Note.
Description of the field of civil engineering to water sport in Rock And Soil generallys use linear Darcy law.The law is suitable for single
One homogeneous porous medium, the linear laminar flow that the reynolds number Re upper limit is [1,10].Based on linear Darcy seepage theory, calculate opposite
Mechanical response under the flow field of uniform Rock And Soil pore media and accordingly evaluation fluid structure interaction is feasible.However, working as Re
Beyond the linear laminar flow upper limit or Rock And Soil there are when straight through tube concentrated leakage passage, still can then be generated with Darcy theoretical calculation
Appreciable error.1868, the famous Russia pungent habit Nie Siji of fluid scholar's cloth proposed Newton fluid in smooth parallel plate stitch
In kinematical theory.Under the theoretical framework system, the movement side of fluid in smooth equal diameter circular pipe can be also derived
Journey.When solving the Problems of Seepage Flow of the medium of Rock And Soil containing straight through tube, opening cubic law is generallyd use at present.So
And the wall surface of pipeline is considered as impervious boundary mostly when specifically calculating, which implies the Rock And Soil matrix of pipeline institute preservation
Also have impermeability (note: Rock And Soil matrix refers to comprising pore structure and non-through pipeline porous media part), while it is also assumed that
Shot charges are free of in pipeline, there are still relatively large deviations compared with practical for this.Therefore, it is still necessary to promote and improve classical underground
Water seepage flow motion theory, so that the Field Characteristics of the straight through tube Rock And Soil porous media containing charges are more accurately described, with
And the mechanical response of the more reasonably lower Rock And Soil of evaluation seepage action of ground water effect.Domestic and international related literatures is consulted, related pipe
The research of road stream, which rarely has, considers that water flow acts on the drag that pipeline wall surface generates.
Utility model content
In order to preferably study influence of the straight through tube wall surface current drag power to stability of rock-soil body, the utility model is mentioned
A kind of test device for simulating pipeline water flow scouring effect in Rock And Soil is supplied.
The technical scheme adopted by the utility model is the test device of pipeline water flow scouring effect in Rock And Soil is simulated,
There is the simulation rock-soil layer of straight through tube including bottom plate and the inside being layed on bottom plate；The bottom plate includes fixing end and lifting
End, the fixing end are fixed by trunnion axis and can be rotated around trunnion axis, and the lift side is connected with halliard, and halliard passes through
It is wound on wire spool after fixed pulley, passes through the height of rotation wire spool continuously adjustable lift side in the vertical direction；It is described
Straight through tube in simulation rock-soil layer includes the upstream port close to fixing end and the downstream port close to lift side, the downstream
Port, which is configured with, to be connected with the matched plug that blocks water of port shape, the upstream port with water source.
Existing pipeline water flow calculates not certain theory, the utility model in the drag that straight through tube wall surface generates
Propose the drag measuring technology that a set of water flow generates straight through tube wall surface.
For this purpose, the utility model has developed the test device of pipeline water flow scouring effect in above-mentioned simulation Rock And Soil, use
The device can realize measurement of the water flow to straight through tube wall surface drag in rock soil medium.
Readily comprehensible, the upstream port of the utility model straight through tube should be connected with water source, and the selection at water source is unlimited,
But it needs to guarantee that water flow can be uniformly entered gently in straight through tube, to realize the purpose of simulation nature pipeline stream, therefore passes through
The upstream port threaded a pipe cannot be connect with equipment such as taps with pressure, and being preferably equipped with dedicated water storage container is straight through tube
It supplies water.
The pipe of the straight through tube of various forms in different rock-soil layers can be tested using the test device of the utility model
Road stream drag need to be made and be laid with to simulation rock-soil layer according to geological condition to be tested when test.Such as it is filled by this
When setting the pipeline stream drag for testing in rock stratum, it can first be laid with one layer of sand bedding course on bottom plate, then put on sand bedding course
Concrete layer simulation rock stratum is set, straight through tube is set according to the actual situation in rock stratum, then fills silty clay layer in the duct
Simulate pipeline filler.Situations such as laying depth and density and pipeline form of each rock-soil layer, should be according to geology item to be tested
Part is laid with according to the size principle of similitude." the size principle of similitude " described in the utility model is referred to according to the reality simulated
Each rock stratum and the thickness of the layer and distribution proportion in geological conditions, pipeline form, filler distribution situation is to simulation rock-soil layer
And its pipeline is selected, made and is laid with.
The application method of the utility model is as follows:
A, experimental site is chosen, the test dress of pipeline water flow scouring effect in the simulation Rock And Soil of the utility model is installed
It sets；
B, the internal simulation rock-soil layer with straight through tube is laid on bottom plate according to geological conditions to be tested, with configuration
The good plug that blocks water blocks the downstream port of straight through tube；
C, hydrostatic is tested: by rotation wire spool regulating base board to being horizontally arranged, then passing through upstream port to through tube
It is filled the water in road, makes water full of stopping water filling after straight through tube；
D, wire spool is rotated, tilts down lift side slowly, until the simulation rock-soil layer on bottom plate just slides
When stop operating at once wire spool, and measure the inclination angle alpha of bottom plate at this time；
E, move water experiment: reduction bottom plate is to horizontal positioned and in laying on bottom plate according to mode identical with step B
Portion has the simulation rock-soil layer of straight through tube, blocks the downstream port of straight through tube with the configured plug that blocks water, then passes through
Upstream port is filled the water into straight through tube, makes water full of straight through tube；
F, the plug that blocks water is pulled out, while rotating wire spool, tilts down lift side slowly, should be kept in the process to through tube
Filling the water in road and adjusting water flow ensures always full of water flow in straight through tube, until the simulation rock-soil layer on bottom plate just occurs
Stop operating wire spool at once when sliding, and measures the inclination angle beta of bottom plate at this time；
G, water flow is calculated to the drag of straight through tube wall surface according to experimental result.
The test of pipeline water flow scouring effect in the simulation Rock And Soil using the utility model can be realized using this method
Device carries out measurement of the water flow to straight through tube wall surface drag in rock-soil layer.
The beneficial effects of the utility model are: the test for simulating pipeline water flow scouring effect in Rock And Soil of the utility model
Measurement of the device suitable for water flow under heavy rainfall or drainage condition to straight through tube wall surface drag rock-soil layer, thus for quantization
Influence of the pipeline drag to Rock And Soil unstability provides reference and contribution under heavy rainfall or drainage condition.
Detailed description of the invention
Fig. 1 is the schematic structural diagram of testing device of pipeline water flow scouring effect in the simulation Rock And Soil of embodiment one.
Fig. 2 is the schematic structural diagram of testing device of pipeline water flow scouring effect in the simulation Rock And Soil of embodiment two.
Fig. 3 is the simulation rock-soil layer cross-sectional structure figure of embodiment one.
Fig. 4 is the simulation rock-soil layer cross-sectional structure figure of embodiment two.
Fig. 5 is the internal Rock And Soil force analysis figure with straight through tube under hydrostatic experiment condition.
Fig. 6 is the internal Rock And Soil force analysis figure with straight through tube under water experiment condition.
In the figure, it is marked as 1- bottom plate, 2- simulates rock-soil layer, 21- sand bedding course, 22- concrete layer, the filling of 23- silty clay
Layer, 3- straight through tube, 31- upstream port, 32- downstream port, 33- block water plug, 9- halliard, 10- fixed pulley, 11- wire spool,
There is G- the Rock And Soil of straight through tube to be self-possessed, pressure of the water body to Rock And Soil in F- straight through tube, FfLower layer's rock mass to have pass through
The frictional force for the Rock And Soil threaded a pipe, the base plate inclination degree measured under the conditions of α-smooth water test, β-are surveyed under the conditions of moving water test
The base plate inclination degree obtained, FdThe drag that water flow generates straight through tube wall surface, FNLower layer's rock mass is to straight through tube
The holding power of Rock And Soil, pressure of the water to the plug that blocks water in P- straight through tube.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the test for simulating pipeline water flow scouring effect in Rock And Soil of the utility model
Device, including bottom plate 1, inside have the simulation rock-soil layer 2 of straight through tube 3；The bottom plate 1 includes fixing end and lift side, institute
It states fixing end to fix and can be rotated around trunnion axis by trunnion axis, the lift side is connected with halliard 9, and halliard 9 passes through fixed
It is wound in after pulley 10 on wire spool 11, passes through the height of rotation 11 continuously adjustable lift side of wire spool in the vertical direction；
The simulation rock-soil layer 2 is set on bottom plate 1, including the sand bedding course 21 that is laid on bottom plate 1 and is laid on sand bedding course 21
Concrete layer 22, straight through tube 3 are set to inside concrete layer 22, and 3 inner wall of straight through tube has silty clay filled layer
23；Straight through tube 3 includes upstream port 31 and downstream port 32, and the downstream port 32 is configured with and the matched resistance of port shape
Water plug 33.
Embodiment one:
The test device pair of pipeline water flow scouring effect in the simulation Rock And Soil of the utility model is utilized according to the following steps
The drag that water flow generates circular pipe wall surface is measured:
(1) experimental site is chosen, the test device of pipeline water flow scouring effect in above-mentioned simulation Rock And Soil is installed；
(2) one layer of sand bedding course 21 is laid with according to the size principle of similitude on bottom plate according to geological conditions to be tested, in sand pad
It is laid with concrete layer 22 on layer 21 and simulates rock stratum, straight through tube 3 is set to inside concrete layer 22, and cross-section of pipeline is circle,
3 inner wall of straight through tube is provided with the silty clay filled layer 23 for simulating pipeline filler.Then with the configured plug that blocks water
33 block the downstream port 32 of straight through tube 3；
(3) hydrostatic is tested: by rotation 11 regulating base board 1 of wire spool to horizontal positioned, then by upstream port 31 to
It is filled the water in straight through tube 3, makes water full of stopping water filling after straight through tube 3；
(4) wire spool 11 is rotated, tilts down lift side slowly, until the concrete layer 22 on bottom plate 1 just occurs
Stop operating wire spool 11 at once when sliding, and measures the inclination angle alpha of bottom plate 1 at this time；
(5) move water experiment: reduction bottom plate 1 is to horizontal positioned and lay on bottom plate 1 according to mode identical with step B
Simulation rock-soil layer 2 simultaneously sets its internal straight through tube 3, is then filled the water by upstream port 31 into straight through tube 3, makes water
Full of straight through tube 3；
(6) pull out the plug 33 that blocks water, while rotating wire spool 11, tilt down lift side slowly, should during keep to
Filling the water in straight through tube 3 and adjusting water flow ensures always full of water flow in straight through tube 3, until the concrete layer on bottom plate 1
22 stop operating wire spool 11 at once when just sliding, and measure the inclination angle beta of bottom plate 1 at this time；
(7) water flow is calculated to the drag of 3 wall surface of straight through tube according to experimental result.
Embodiment two:
The test device pair of pipeline water flow scouring effect in the simulation Rock And Soil of the utility model is utilized according to the following steps
The drag that water flow generates rectangular duct wall surface is measured:
(1) experimental site is chosen, the test device of pipeline water flow scouring effect in above-mentioned simulation Rock And Soil is installed；
(2) one layer of sand bedding course 21 is laid with according to the size principle of similitude on bottom plate according to geological conditions to be tested, in sand pad
It is laid with concrete layer 22 on layer 21 and simulates rock stratum, straight through tube 3 is set to inside concrete layer 22, and cross-section of pipeline is rectangle,
3 inner wall of straight through tube is provided with the silty clay filled layer 23 for simulating pipeline filler.Then with the configured plug that blocks water
33 block the downstream port 32 of straight through tube 3；
(3) hydrostatic is tested: by rotation 11 regulating base board 1 of wire spool to horizontal positioned, then by upstream port 31 to
It is filled the water in straight through tube 3, makes water full of stopping water filling after straight through tube 3；
(4) wire spool 11 is rotated, tilts down lift side slowly, until the concrete layer 22 on bottom plate 1 just occurs
Stop operating wire spool 11 at once when sliding, and measures the inclination angle alpha of bottom plate 1 at this time；
(5) move water experiment: reduction bottom plate 1 is to horizontal positioned and lay on bottom plate 1 according to mode identical with step B
Simulation rock-soil layer 2 simultaneously sets its internal straight through tube 3, is then filled the water by upstream port 31 into straight through tube 3, makes water
Full of straight through tube 3；
(6) pull out the plug 33 that blocks water, while rotating wire spool 11, tilt down lift side slowly, should during keep to
Filling the water in straight through tube 3 and adjusting water flow ensures always full of water flow in straight through tube 3, until the concrete layer on bottom plate 1
22 stop operating wire spool 11 at once when just sliding, and measure the inclination angle beta of bottom plate 1 at this time；
(7) water flow is calculated to the drag of 3 wall surface of straight through tube according to experimental result.
Cross section is set in concrete layer for round and square it should be appreciated that using in above-described embodiment one and embodiment two
The straight through tube of shape is measured, merely for the sake of be convenient for modelling the considerations of, measuring principle according to the present utility model can
Know, the measurement device and method of the utility model could be applicable to the straight through tube wall surface water that other forms include irregular form
Flow the measurement of drag.
Calculation method:
By (there is the Rock And Soil of straight through tube in example 1 and example 2 to the Rock And Soil with straight through tube
Refer to concrete layer) carry out power equilibrium analysis, substitute into smooth water test under the conditions of calculated frictional resistance Ff, to calculate
Drag F of the water flow to straight through tube wall surfaced。
Force analysis of the Rock And Soil with straight through tube under hydrostatic experiment and dynamic water experiment condition is respectively such as Fig. 5, Fig. 6
It is shown.
Drag calculation formula is as follows:
In formula:
G is represented, and there is the Rock And Soil of straight through tube to be self-possessed,
F represents water body in straight through tube to the pressure of Rock And Soil,
FfLower layer's rock mass is represented to the frictional force (table in example 1 and example 2 of the Rock And Soil with straight through tube
Show sand bedding course to the frictional force of concrete layer),
α represents the base plate inclination degree measured under the conditions of smooth water test,
β represents the base plate inclination degree measured under the conditions of dynamic water test,
FdRepresent the drag that water flow generates straight through tube wall surface.
Claims (1)
1. simulating the test device of pipeline water flow scouring effect in Rock And Soil, including bottom plate (1) and it is layed in interior on bottom plate (1)
Portion has the simulation rock-soil layer (2) of straight through tube (3)；The bottom plate (1) includes fixing end and lift side, and the fixing end passes through
Trunnion axis is fixed and can be rotated around trunnion axis, and the lift side is connected with halliard (9), and halliard (9) passes through fixed pulley (10)
After be wound on wire spool (11), pass through rotation wire spool (11) continuously adjustable lift side height in the vertical direction；Institute
Stating the straight through tube (3) in simulation rock-soil layer (2) includes the upstream port (31) close to fixing end and the downstream close to lift side
Port (32), the downstream port (32) are configured with and port shape is matched blocks water plug (33), the upstream port (31) and
Water source is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820609457.6U CN208270359U (en) | 2018-04-26 | 2018-04-26 | The test device of pipeline water flow scouring effect in a kind of simulation Rock And Soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820609457.6U CN208270359U (en) | 2018-04-26 | 2018-04-26 | The test device of pipeline water flow scouring effect in a kind of simulation Rock And Soil |
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| Publication Number | Publication Date |
|---|---|
| CN208270359U true CN208270359U (en) | 2018-12-21 |
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| CN201820609457.6U Expired - Fee Related CN208270359U (en) | 2018-04-26 | 2018-04-26 | The test device of pipeline water flow scouring effect in a kind of simulation Rock And Soil |
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- 2018-04-26 CN CN201820609457.6U patent/CN208270359U/en not_active Expired - Fee Related
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