CN108152476A - A kind of Gu Gou protects plateau engineering measure simulator and its analogy method and application - Google Patents
A kind of Gu Gou protects plateau engineering measure simulator and its analogy method and application Download PDFInfo
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- CN108152476A CN108152476A CN201711397806.9A CN201711397806A CN108152476A CN 108152476 A CN108152476 A CN 108152476A CN 201711397806 A CN201711397806 A CN 201711397806A CN 108152476 A CN108152476 A CN 108152476A
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- raceway groove
- measure
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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
A kind of Gu Gou protects plateau engineering measure simulator and its analogy method and application, simulator includes the slope panel for placing loess erosion ditch model, slope panel is mounted on folding rack, folding rack is made of slope panel mounting bracket, base support, adjusting screw rod, one end of slope panel mounting bracket and base support is hinged, installation and adjustment screw rod between slope panel mounting bracket and the other end of base support, slope panel mounting bracket can be up and down along adjusting screw rod by nipple；Artificial rain device is provided with above the loess erosion ditch model, the bottom end of slope panel is disposed with silt collecting box；Sensor is provided in the plate face of slope panel and for the data line by the data transmission that sensor detects to external sensor data collector.The present invention realizes the quantitative analysis of engineering actual effect by carrying out senditivity experriments at the scene.
Description
Technical field
The invention belongs to geological disaster prevention and control fields, and plateau engineering measure simulator and its analogy method are protected for a kind of Gu Gou
With application.
Background technology
Tradition is related to the physical simulating device that rainfall induces geological disaster, such as mud-rock flow physical simulating device, generally all makes
It is more heavy with metal structure stent, it is not easy to move, simulation test can only be carried out in test site indoors.And in engineering reality
In border, most of position occurs for geological disaster in more remote area, and required simulation medium needs in-situ sampling band mostly
Indoor carry out physical analogy is returned, needs to expend a large amount of manpower and material resources, and can also change the physics and chemistry of medium in transportational process
Shape influences simulation test effect.In addition in simulation laboratory test, the similitude of field landform and the similitude of material resource are difficult to obtain
Meet.Therefore needing to develop a kind of can be convenient for carrying and simulate the novel field physical simulation experiment device to work well and side
Method carries out physical simulation experiment, and the comparison of plateau engineering construction effect and anti-is protected for retrogressive erosion process and Gu Gou to realize
Feedback.
Currently used Gu Gou, which protects plateau engineering measure, mainly to be had the backfill of ditch head, silt arrester, transforming slope into terrace, builds cistern etc.,
Though these engineering measures have more practical engineering experience, how implementation result also lacks the physics in situ of a set of maturation at present
Analogy method, therefore also just it is difficult to the carry out qualitative assessment to engineering actual effect and analysis.
Invention content
It is an object of the invention to the problems in for the above-mentioned prior art, provide a kind of Gu Gou to protect plateau engineering measure simulation
Device and its analogy method and application, the simulator is lightly portable, can carry out simulation test at the scene, similar to surrounding enviroment
Degree is high.
To achieve these goals, Gu Gou of the present invention protects plateau engineering measure simulator and includes placing loess erosion ditch
The slope panel of model, slope panel are mounted on folding rack, and folding rack is by slope panel mounting bracket, base support, adjusting spiral shell
Bar forms, and one end of slope panel mounting bracket and base support is hinged, the other end of slope panel mounting bracket and base support it
Between installation and adjustment screw rod, slope panel mounting bracket can be up and down along adjusting screw rod by nipple；The loess erosion
Artificial rain device is provided with above ditch model, the bottom end of slope panel is disposed with silt collecting box；In the plate face of slope panel
It is provided with sensor and for the data line by the data transmission that sensor detects to external sensor data collector.Slope
Continuously open up fluted in the plate face of panel, groove joining place forms to increase the fricting strip of loess erosion ditch model adhesive force
Line.
Baffle is provided on the slope panel of the loess erosion ditch model both sides.
The slope panel external connection rain trap of the loess erosion ditch model top and bottom both sides.
The middle part of the slope panel mounting bracket and base support is machined with respectively at respective folding.Artificial rain device
It is equipped with including the shower being connect by water pipe with water feeding tank, in water feeding tank for the suction pump of water pipe water delivery.
Gu Gou of the present invention protects the analogy method of plateau engineering measure simulator, includes the following steps：First, two sets of simulations are taken
Device makes loess erosion ditch model on slope panel respectively, wherein a set of model engineering measure, another set of not use any work
Journey measure simultaneously calculates plateau area and raceway groove parameter as control, the dimensional parameters of record cast；Then, branch is installed by slope panel
Frame adjusts the inclination angle of slope panel；Finally, two sets of loess erosion ditch models are uniformly dropped by artificial rain device simultaneous quantitative
Rain, observation raceway groove wash away situation, read sensing data by sensor data acquisition device, compare plateau area and raceway groove parameter
Variation.
The specific method for simulating gradient optimiziation measure is as follows：
The Huang of high h=300mm, width b=1000mm, long l=150mm are accumulated on the slope panel of two sets of simulators first
Native erosion groove shape, raceway groove is placed in the middle, divides loess tableland, and base slope face angle, θ is 15 °, and ditch length is initially set to L=1000mm, plateau face
Product is S=bl-0.5lL=1.2m, and ditch tail depth degree is H=50tan θ=134mm, and 5 points are equidistantly monitored on raceway groove, are denoted as
a、b、c、d、e；It measures each point channel depth and soil humidity sensor is buried in raceway groove；Then in simulation gradient optimiziation
Terraced fields are built in the slope surface of measure, vertical equidistantly 20mm builds one of terraced fields, and terrace width b=2/tan θ=74.6mm are rammed
The real raised path through fields has simultaneously built the drainage channel between terraced fields, and any engineering measure is not built in the another set of effect compared；Finally use
Artificial rain device carries out rain making to two sets of simulators simultaneously, and interval same time is recorded on two testing stands under raceway groove
Cutting depth, ditch bed wash away width and ditch head advance situation, when avalanche sliding occurring in plateau area when apparent physical change, observe ditch
Road washes away situation, records rainfall in the period graduated cylinder, channel depth, width, ditch head advance length, plateau face area, reads soil
Earth humidity data；According to the change of loess tableland physical aspect under the data of record and condition of raining, base slope face angle is obtained
When degree θ is 15 °, in the case of having gradient optimiziation measure and no engineering measure, the variation of plateau face area and the advance of ditch head
Length, raceway groove wash away changed condition；Under conditions of when base slope face angle, θ is 15 °, two sets of simulators of comparison are collected into
Ditch head retrogressive erosion amount data realize the comparative analysis for whetheing there is gradient optimiziation measure effect；Change base slope face angle, θ, then with
20 °, 25 °, 30 ° are tested, and are tested respectively under different slope angles, have gradient optimiziation measure and without in the case of the engineering measure
The variation of plateau face area and the advance length of ditch head, raceway groove wash away changed condition, and record data carry out Comparative and Quantitative Analysis.
The method for simulating the landfill engineering measure of ditch head is as follows：
Accumulated on two sets of simulator bottom plates first high h=300mm, width b=1000mm, long l=150mm loess invade
Etched groove shape, raceway groove is placed in the middle, divides loess tableland, and base slope face angle, θ is 15 °, and ditch length is initially set to L=1000mm, and plateau area is S
=bl-0.5lL=1m2, ditch tail depth degree be H=50tan θ=134mm, 5 points are equidistantly monitored on raceway groove, be denoted as a, b, c,
d、e；Each point channel depth is measured, soil humidity sensor is buried in raceway groove；Then in simulation ditch head stemming operation measure
The ditch head backfill soil body, by the control of ditch length in 900mm, after drainage pipeline is laid with, whole backfill is carried out, in backfill
Compaction in layers should be used, backfill face forms 30 °~40 ° of slope surface, prevents slopes voluntarily avalanche；Finally use artificial rain device
Rain making is carried out to two sets of simulators simultaneously, interval same time records dinting depth, the ditch bed of raceway groove on two testing stands
Width and ditch head advance situation are washed away, when apparent physical change occurs in plateau area, observation raceway groove washes away situation, records the period
Rainfall, channel depth, width, ditch head advance length, plateau face area in graduated cylinder read soil humidity sensor data；According to
The change of loess tableland physical aspect under the data and condition of raining of record, obtain base slope face angle, θ for 15 ° when, have ditch head backfill
Engineering measure and without in the case of the engineering measure, the advance length of ditch head, raceway groove wash away the physical aspects changes such as situation；
Under the conditions of slope surface angle, θ is 15 °, the ditch head retrogressive erosion amount data that two sets of simulators are collected into are compared, realization whether there is ditch head
The comparative analysis of stemming operation measure effect；Change base slope face angle, θ, then tested with 20 °, 25 °, 30 °, tested respectively not
In the case of under slope angle, having gradient optimiziation measure and no engineering measure, the variation of plateau face area and the advance of ditch head
Length, raceway groove wash away changed condition, and record data carry out Comparative and Quantitative Analysis.
The present invention analogy method silt arrester, build cistern engineering measure simulation in application.
Compared with prior art, the present invention has following advantageous effect：By there is Gu Gou to protect plateau engineering measure and no work
The comparison of journey measure, realize the engineering measure implement after feedback effects analysis, then by the comparison between various engineering measures,
It obtains an optimum Gu Gou and protects plateau engineering measure scheme.The present invention is stupid by using folding rack substitution conventional apparatus large size
The steel structure support of weight, increases the flexibility of simulator, easy to carry.Previous sampling is taken back laboratory test and become by the present invention
Into field in situ test, this also just solves the reality for wasting a large amount of manpower and materials, also, due to being to carry out at the scene
Simulation test can ensure that physical model experiment reaches maximum fitting with surrounding enviroment, improve the standard of simulation test
True property increases the reliability of data.The simulation that the present invention protects plateau engineering measure for Gu Gou provides the foundation, and realizes work
The blank in terms of Gu Gou protects plateau engineering measure analogue technique has been filled up in the quantitative analysis of journey actual effect.
Description of the drawings
The assembling structure schematic diagram of Fig. 1 simulators of the present invention；
The front view of Fig. 2 simulator structures of the present invention；
The vertical view of Fig. 3 slope surface harden structures of the present invention；
Loess erosion ditch model schematics of the Fig. 4 without engineering measure；
Fig. 5 simulates gradient optimiziation measure schematic diagram；
Fig. 6 simulates ditch head stemming operation measure schematic diagram.
In attached drawing：1- silt collecting boxs；2- loess erosion ditch models；2-1. slope surface；2-2. plateaus face；2-3. ditch heads；2-4.
The raised path through fields；2-5. fields face；2-6. ditch head backfills；3- artificial rain devices；4- suction pumps；5- water feeding tanks；6- simulators；6-1.
At folding；6-2. rain trap；6-3. friction stripeds；6-4. sensor data acquisition devices；6-5. data line；7- folding racks；7-
1. slope panel mounting bracket；7-2. base support；7-3. adjusting screw rod.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The basic principle of erosion：In its natural state, slope surface dead weight M generates two component, i.e., the direct stress σ of vertical slope surface
With the component F=Msin θ along line of slope (wherein θ is raceway groove base slope face angle degree).And rainwash is to the surface layer soil body
Drag τc=γ hj.
Soil shear strength(wherein C is cohesion of soil,For soil body internal friction angle).
As F+ τc>τ0When, soil shear strength can not resist downslide component, and slope surface is caved in sliding；
As F+ τc=τ0When, the soil body is in critical condition；
As F+ τc<τ0When, downslide component is not enough to cause slip, slope stability.
Since loess seepage of water is smaller, gradually full water, lower floor's soil body are unsaturated for the precipitation event Caused by Sloping Surfaces surface layer soil body.
With loess gap gradually satisfy water, soil body internal friction angleIt reduces, makes with the increase of water content with cohesive force C
Soil body coefficient of internal frictionBecome smaller, internal frictionIt reduces.
Therefore under precipitation event, flow is constantly washed away, the increase of raceway groove base slope face angle, θ, downslide component F=Msin θ
Increase.It moves in circles down, the intensification of ditch bed broadens, and plateau face width successively decreases, and ditch head gradually upstream advances.
Referring to Fig. 1-3, Gu Gou of the present invention protects plateau engineering measure simulator, and loess erosion ditch model 2 is placed including being used for
Slope panel, continuously open up in the plate face of slope panel fluted, groove joining place forms attached for increasing loess erosion ditch model 2
The friction striped 6-3 puted forth effort is provided with baffle 8 on the slope panel of 2 both sides of loess erosion ditch model.Loess erosion ditch model 2 pushes up
Portion and the slope panel external connection rain trap 6-2 of two bottom sides.Slope panel is mounted on folding rack 7, and folding rack 7 is by slope surface
Plate mounting bracket 7-1, base support 7-2, adjusting screw rod 7-3 compositions, the one of slope panel mounting bracket 7-1 and base support 7-2
End is hinged, installation and adjustment screw rod 7-3 between the other end of slope panel mounting bracket 7-1 and base support 7-2, slope panel installation branch
Frame 7-1 can be up and down along adjusting screw rod 7-3 by nipple.In slope panel mounting bracket 7-1 and base support 7-2
Portion is machined with 6-1 at respective folding respectively.The top of loess erosion ditch model 2 is provided with artificial rain device 3, slope panel
Bottom end is disposed with silt collecting box 1, and artificial rain device 3 includes the shower being connect by water pipe with water feeding tank 5, in water feeding tank 5
Equipped with for the suction pump 4 of water pipe water delivery.Sensor is provided in the plate face of slope panel and for sensor to be detected
The data transmission arrived to external sensor data collector 6-4 data line 6-5.
Referring to Fig. 4, Fig. 5, present invention simulation gradient optimiziation measure, engineering purpose reduces slope surface to retain slope flow
It washes away；Increase milliosmolarity under precipitation, reduce raceway groove runoff, reduce current scour erosion groove bed, specifically include following steps：
(1) simulator is unfolded in the wild, fixes stent.
Scene gets out material requested (the experiment soil body, rainer etc.) by test requirements document.
(2) it is stacked on two sets of simulator bottom plates into approximate intact loess retrogressive erosion ditch head shapes with the original state soil body,
A set of simulation gradient optimiziation measure, it is another set of to be used as control without using any engineering measure.
1. high h=300mm, wide b=1000mm, the loess erosion of long l=150mm are accumulated on two sets of simulator bottom plates
Ditch shape, raceway groove is placed in the middle, divides loess tableland, and base slope face angle, θ is 150, ditch length is initial to be all set to L=1000mm, calculates plateau face
Area is S=bl-0.5lL=1m2, ditch tail depth degree is H=50tan θ=134mm.5 points are equidistantly monitored on raceway groove, are remembered
For a, b, c, d, e.Go out each point channel depth, and soil humidity sensor is buried in raceway groove with tape measure；
2. building terraced fields in the slope surface of simulation gradient optimiziation measure, vertical equidistantly 20mm builds one of terraced fields, ladder
Field width b=2/tan θ=74.6mm.The raised path through fields is tamped, the raised path through fields is made to combine closely with field face, the raised path through fields collapses during preventing experiment.
The drainage channel between terraced fields is built.The another set of effect compared, does not build any engineering measure.
(3) rain making, interval same time record two are carried out to two sets of simulators simultaneously using artificial rain device
The dinting depth of raceway groove and ditch bed wash away width and ditch head advance situation on testing stand.
1. surrounding uniformly respectively installs the graduated cylinder that catchments in trial zone, manually rainer gives trial zone uniform rainfall；
Avalanche sliding occurs for ②Yuan areas when apparent physical change, and observation raceway groove washes away situation, records the period graduated cylinder
Interior rainfall, channel depth, width, ditch head advance length, plateau face area.Read soil humidity sensor data；
3. according to the change of loess tableland physical aspect under the data of record and condition of raining, it is 15 ° that can obtain base slope face angle, θ
When, in the case of having gradient optimiziation measure and no engineering measure, the variation of plateau face area and the advance length of ditch head, raceway groove
Wash away the physical aspects changes such as situation；
4. under conditions of when base slope face angle, θ is 15 °, compare the ditch head retrogressive erosion amount that two sets of simulators are collected into
Data are, it can be achieved that whether there is the comparative analysis of gradient optimiziation measure effect.
(4) change base slope face angle, θ, by being tested again with 20 °, 25 °, 30 ° respectively the step of (2), (3), try respectively
It tests under different slope angles, has gradient optimiziation measure and without the variation of plateau face area in the case of the engineering measure and the advance of ditch head
Length, raceway groove wash away the physical aspects changes such as situation.
(5) simulator bottom plate angle a is adjusted, raceway groove current scour intensity can be changed, the ditch of different gradients can be simulated
Flow washes away situation to raceway groove in bed.By measuring the sediment yield of ditch bed, dinting depth, width under the identical rainfall of different angle
Degree etc. carries out quantitative comparison.The preparation before rainfall is carried out by (2) step, is tried respectively with 5 °, 7 °, 9 °, 11 °, 13 °, 15 °
Test, it may also be necessary to add angle a be 6 °, 8 °, 10 °, 12 °, 14 ° of test group is as control.Record data are quantified
Comparative analysis.
Referring to Fig. 4, Fig. 6, the engineering purpose of present invention simulation ditch head landfill engineering measure slows down plateau face and invades to reinforce ditch head
Speed is lost, ditch head is prevented and advances, ground is protected by gully cutting damage, not specifically include following steps：
(1) simulator is unfolded in the wild, fixes stent.
Scene gets out material requested (the experiment soil body, rainer etc.) by test requirements document.
(2) it is stacked on two sets of simulator bottom plates into approximate intact loess retrogressive erosion ditch head shapes with the original state soil body,
A set of simulation ditch head stemming operation measure, it is another set of to be used as control without using any engineering measure.
1. the loess erosion of high h=300mm, width b=1000mm, long l=150mm are accumulated on two sets of simulator bottom plates
Ditch shape, raceway groove is placed in the middle, divides loess tableland, and base slope face angle, θ is 15 °, and ditch length is initially all set to L=1000mm, calculates plateau face
Area is S=bl-0.5lL=1m2, ditch tail depth degree is H=50tan θ=134mm.5 points are equidistantly monitored on raceway groove, are remembered
For a, b, c, d, e.Go out each point channel depth with tape measure, soil humidity sensor is buried in raceway groove；
2. the soil body is backfilled in the ditch head of simulation ditch head stemming operation measure, by the control of ditch length in 900mm, by drainage pipeline
After laying, whole backfill is carried out.Compaction in layers should be used in backfill.Its backfill face will form 30~40 ° of slope surface, prevent
Only slopes voluntarily avalanche.
(3) rain making, interval same time record two are carried out to two sets of simulators simultaneously using artificial rain device
The dinting depth of raceway groove and ditch bed wash away width and ditch head advance situation on testing stand.
1. surrounding uniformly respectively installs the graduated cylinder that catchments in trial zone, manually rainer gives trial zone uniform rainfall；
Avalanche sliding occurs for ②Yuan areas when apparent physical change, and observation raceway groove washes away situation, records the period graduated cylinder
Interior rainfall, channel depth, width, ditch head advance length, plateau face area.Read soil humidity sensor data；
3. according to the change of loess tableland physical aspect under record data and condition of raining, it is 15 ° that can obtain base slope face angle, θ
When, there is ditch head stemming operation measure and without in the case of the engineering measure, ditch head advance length, raceway groove wash away the physics such as situation
Metamorphosis；
4. under the conditions of slope surface angle, θ is 15 °, the ditch head retrogressive erosion amount data that two sets of simulators are collected into are compared,
It can be achieved to whether there is the comparative analysis of ditch head stemming operation measure effect.
(4) change base slope face angle, θ, by being tested again with 20 °, 25 °, 30 ° respectively the step of (2), (3), try respectively
It tests under different slope angles, has gradient optimiziation measure and without the variation of plateau face area in the case of the engineering measure and the advance of ditch head
Length, raceway groove wash away the physical aspects changes such as situation.
(5) simulator bottom plate angle a is adjusted, raceway groove current scour intensity can be changed, the ditch of different gradients can be simulated
Flow washes away situation to raceway groove in bed.By measuring the sediment yield of ditch bed, dinting depth, width under the identical rainfall of different angle
Degree etc. carries out quantitative comparison.The preparation before rainfall is carried out by (2) step, is tried respectively with 5 °, 7 °, 9 °, 11 °, 13 °, 15 °
Test, it may also be necessary to add angle a be 6 °, 8 °, 10 °, 12 °, 14 ° of test group is as control.Record data are quantified
Comparative analysis.
In an identical manner can to silt arrester, build the engineering measures such as cistern simulation.
Claims (8)
1. a kind of Gu Gou protects plateau engineering measure simulator, it is characterised in that：Including being used to place loess erosion ditch model (2)
Slope panel, slope panel are mounted on folding rack (7), and folding rack (7) is by slope panel mounting bracket (7-1), base support (7-
2), adjusting screw rod (7-3) forms, and slope panel mounting bracket (7-1) and one end of base support (7-2) are hinged, slope panel installation
Installation and adjustment screw rod (7-3), slope panel mounting bracket (7-1) pass through between the other end of stent (7-1) and base support (7-2)
Nipple can be up and down along adjusting screw rod (7-3)；Rain making is provided with above the loess erosion ditch model (2)
Device (3), the bottom end of slope panel are disposed with silt collecting box (1)；Sensor is provided in the plate face of slope panel and is used for
By the data line (6-5) of the data transmission that sensor detects to external sensor data collector (6-4)；
Continuously open up fluted in the plate face of the slope panel, groove joining place is formed for increasing loess erosion ditch model (2)
The friction striped (6-3) of adhesive force；Baffle (8) is provided on the slope panel of loess erosion ditch model (2) both sides.
2. Gu Gou according to claim 1 protects plateau engineering measure simulator, it is characterised in that：The loess erosion ditch mould
The slope panel external connection rain trap (6-2) of type (2) top and bottom both sides.
3. Gu Gou according to claim 1 protects plateau engineering measure simulator, it is characterised in that：The slope panel installation branch
Frame (7-1) and the middle part of base support (7-2) are machined at respective folding (6-1) respectively.
4. Gu Gou according to claim 1 protects plateau engineering measure simulator, it is characterised in that：Artificial rain device (3)
It is equipped with including the shower being connect by water pipe with water feeding tank (5), in water feeding tank (5) for the suction pump of water pipe water delivery (4).
5. Gu Gou described in any one claim protects the simulation of plateau engineering measure simulator in a kind of 1-4 based on claim
Method, which is characterized in that include the following steps：First, two sets of simulators is taken to make loess erosion ditch on slope panel respectively
Model (2), wherein a set of model engineering measure, another set of to be used as control, the size of record cast without using any engineering measure
Parameter simultaneously calculates plateau area and raceway groove parameter；Then, the inclination angle of slope panel is adjusted by slope panel mounting bracket (7-1)；Finally,
By artificial rain device (3) simultaneous quantitative to two sets of loess erosion ditch model (2) uniform rainfalls, observation raceway groove washes away feelings
Condition reads sensing data by sensor data acquisition device (6-4), compares the variation of plateau area and raceway groove parameter.
6. analogy method according to claim 5, which is characterized in that the specific method of simulation gradient optimiziation measure is such as
Under：
Accumulated on the slope panel of two sets of simulators first high h=300mm, width b=1000mm, long l=150mm loess invade
Etched groove shape, raceway groove is placed in the middle, divides loess tableland, and base slope face angle, θ is 15 °, and ditch length is initially set to L=1000mm, and plateau area is S
=bl-0.5lL=1.2m, ditch tail depth degree be H=50tan θ=134mm, 5 points are equidistantly monitored on raceway groove, be denoted as a, b,
c、d、e；It measures each point channel depth and soil humidity sensor is buried in raceway groove；Then in simulation gradient optimiziation measure
Slope surface on build terraced fields, vertical equidistantly 20mm builds one of terraced fields, and terrace width b=2/tan θ=74.6mm tamp field
Bank has simultaneously built the drainage channel between terraced fields, and any engineering measure is not built in the another set of effect compared；Finally using artificial
Rainer (3) while rain making are carried out to two sets of simulators, interval same time is recorded on two testing stands under raceway groove
Cutting depth, ditch bed wash away width and ditch head advance situation, when avalanche sliding occurring in plateau area when apparent physical change, observe ditch
Road washes away situation, records rainfall in the period graduated cylinder, channel depth, width, ditch head advance length, plateau face area, reads soil
Earth humidity data；According to the change of loess tableland physical aspect under the data of record and condition of raining, base slope face angle is obtained
When degree θ is 15 °, in the case of having gradient optimiziation measure and no engineering measure, the variation of plateau face area and the advance of ditch head
Length, raceway groove wash away changed condition；Under conditions of when base slope face angle, θ is 15 °, two sets of simulators of comparison are collected into
Ditch head retrogressive erosion amount data realize the comparative analysis for whetheing there is gradient optimiziation measure effect；Change base slope face angle, θ, then with
25 °, 35 °, 45 ° are tested, and are tested respectively under different slope angles, have gradient optimiziation measure and without in the case of the engineering measure
The variation of plateau face area and the advance length of ditch head, raceway groove wash away changed condition, and record data carry out Comparative and Quantitative Analysis.
7. analogy method according to claim 5, which is characterized in that the method for simulation ditch head landfill engineering measure is as follows：
The loess erosion ditch of high h=300mm, width b=1000mm, long l=150mm are accumulated on two sets of simulator bottom plates first
Shape, raceway groove is placed in the middle, divides loess tableland, and base slope face angle, θ is 15 °, and ditch length is initially set to L=1000mm, and plateau area is S=
Bl-0.5lL=1m2, ditch tail depth degree be H=50tan θ=134mm, 5 points are equidistantly monitored on raceway groove, be denoted as a, b, c, d,
e；Each point channel depth is measured, soil humidity sensor is buried in raceway groove；Then in simulation ditch head stemming operation measure
Ditch head backfills the soil body, and ditch length is controlled in 900mm, after drainage pipeline is laid with, whole backfill is carried out, is answered in backfill
Using compaction in layers, backfill face forms 30 °~40 ° of slope surface, prevents slopes voluntarily avalanche；Finally use artificial rain device
(3) while to two sets of simulators rain making is carried out, interval same time records dinting depth, the ditch of raceway groove on two testing stands
Bed washes away width and ditch head advance situation, and when apparent physical change occurs in plateau area, observation raceway groove washes away situation, when recording this
Rainfall, channel depth, width, ditch head advance length, plateau face area in section graduated cylinder, read soil humidity sensor data；Root
According to the change of loess tableland physical aspect under the data and condition of raining of record, when to obtain base slope face angle, θ be 15 °, there is ditch head to return
Fill out engineering measure and without in the case of the engineering measure, the advance length of ditch head, raceway groove wash away the physical aspects changes such as situation；
Under the conditions of slope surface angle, θ is 15 °, the ditch head retrogressive erosion amount data that two sets of simulators are collected into are compared, realization whether there is ditch
The comparative analysis of head stemming operation measure effect；Change base slope face angle, θ, then tested with 25 °, 35 °, 45 °, tested respectively
Under different slope angles, in the case of having gradient optimiziation measure and no engineering measure, before the variation of plateau face area and ditch head
Changed condition is washed away into length, raceway groove, and record data carry out Comparative and Quantitative Analysis.
8. a kind of analogy method as claimed in claim 5 silt arrester, build cistern engineering measure simulation in application.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711397806.9A CN108152476B (en) | 2017-12-21 | 2017-12-21 | Tableland fixing and protecting project measure simulation device and simulation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397806.9A CN108152476B (en) | 2017-12-21 | 2017-12-21 | Tableland fixing and protecting project measure simulation device and simulation method and application thereof |
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| CN108152476A true CN108152476A (en) | 2018-06-12 |
| CN108152476B CN108152476B (en) | 2020-11-10 |
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Cited By (4)
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| CN109753749A (en) * | 2019-01-15 | 2019-05-14 | 中国水利水电科学研究院 | A kind of soil body avalanche method for numerical simulation based on mechanical balance principle |
| CN111157437A (en) * | 2020-01-07 | 2020-05-15 | 西北农林科技大学 | A observation device for ditch head erosion process of tracing to source |
| CN113820093A (en) * | 2021-09-15 | 2021-12-21 | 东北石油大学 | Instantaneous water distribution measuring device |
| CN114112893A (en) * | 2021-12-20 | 2022-03-01 | 苏州金螳螂园林绿化景观有限公司 | Method for detecting scouring of heap slope soil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109753749A (en) * | 2019-01-15 | 2019-05-14 | 中国水利水电科学研究院 | A kind of soil body avalanche method for numerical simulation based on mechanical balance principle |
| CN111157437A (en) * | 2020-01-07 | 2020-05-15 | 西北农林科技大学 | A observation device for ditch head erosion process of tracing to source |
| CN113820093A (en) * | 2021-09-15 | 2021-12-21 | 东北石油大学 | Instantaneous water distribution measuring device |
| CN113820093B (en) * | 2021-09-15 | 2022-06-21 | 东北石油大学 | Instantaneous water distribution measuring device |
| CN114112893A (en) * | 2021-12-20 | 2022-03-01 | 苏州金螳螂园林绿化景观有限公司 | Method for detecting scouring of heap slope soil |
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