CN107589030A - A kind of field riverbank in-situ testing device and method of testing - Google Patents
A kind of field riverbank in-situ testing device and method of testing Download PDFInfo
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Abstract
The invention discloses a kind of field riverbank in-situ testing device and method of testing, is related to outdoor field of measuring technique.The test device of the present invention includes：Flush equipment and diversion equipment；Flush equipment includes U-shaped baffle plate, the horizontal plate with the bottom plate of U-shaped baffle plate lower edge connection and in the side setting relative with the middle part wooden partition of U-shaped baffle plate；The height of horizontal plane, horizontal plate are connected with bottom plate by swash plate where the height of horizontal plane is higher than bottom plate where horizontal plate；Water inlet and delivery port are offered on the wooden partition of U-shaped baffle plate, water outlet is provided with control wet part；The entrance connection water source of diversion equipment, the outlet of diversion equipment connects with water inlet；U-shaped baffle plate, bottom plate and swash plate form scour trough；Diversion equipment introduces current in scour trough, and horizontal plate is inserted in the soil body to be measured, and the current scour soil body to be measured in scour trough is with the natural phenomena of simulated flow concave bank.Apparatus of the present invention measurement result is accurate, easy to carry and cost is relatively low.
Description
Technical field
The present invention relates to outdoor field of measuring technique, more particularly to a kind of field riverbank in-situ testing device and test side
Method.
Background technology
Alluvial river bed causes bank erosion, bank slope collapse under offshore current scour and Action of Gravity Field, when Scour and Accretion not
During balance, river type will produce change, while riverfront vegetation will also produce succession change.
In recent years, impact resilience and the gradient, coverage, vegetation class of the increasing experts and scholars to Different Soil
The correlation properties such as type and root system of plant have carried out experimental study.Research found under different type land use, soil anti-scouribility
Larger difference be present, and propose to analyze the erosion-resisting characteristics of soil by determining the anti-impact index of soil.Due to Qinghai-Tibet special
Different weather conditions and complicated topography and geomorphology, the experimental study on alluvial stream bank erosion need to overcome many difficulties.Pin
To river side bank avalanche erosional features, suitable flushing device, the setting of Wash flow flow velocity and to different material composition river
The measure of bank weight eroded is the key problem in technology of field riverbank original position washout test, be study riverbank erosion move back and river develop it is important
One of premise, and need further to be solved the problems, such as.
Soil body washout test device mainly passes through manual simulation's runoff original position concave bank soil body different in flow rate, Ke Yi
Process, runoff process are moved back in the erosion amount of moving back on measure different material composition riverbank, the erosion for analyzing riverbank in the shorter cycle in unit interval
With avalanche process, and evaluate root system of plant consolidated earth mass performance, there is the advantages of convenient, controllable, be easy to study different factors it
Between inherent influencing mechanism.Through consult amount of literature data find, at present both at home and abroad to soil body flushing device for a long time
Research and application, and most of test is simulation laboratory test, and what is mainly tested is the test body of manual manufacture in current
The migration characteristic of soil particle and the failure law of the whole soil body under souring.But machine is moved back in the erosion on research channel erosion riverbank
Reason, it is preferred that emphasis is grasp the erosion feature in river and the characteristic against corrosion of the riverbank original position soil body.At present, in relatively small number of field
In washout test research in situ, regulation and control and survey to influence factors such as water velocity, flushing time and different riverbank material compositions
Method for testing is relatively thin.
According to the data grasped at present, the existing test device and method of testing of washing away can not meet test requirements document, and right
Typical area, which is acted on, in partial rivers is concentrated mainly on the upstream area in river or the high and cold mountain area of awful weather, its landform bar
Part is complicated and changeable, lacks water facilities etc..For erosion of the in-site detecting riverbank material within the unit interval under different condition in the wild
The amount of moving back using the Portable in-situ of suitable field complicated landform and weather conditions, it is necessary to wash away test device.
The content of the invention
In view of this, the embodiments of the invention provide a kind of field riverbank in-situ testing device and method of testing, main mesh
Be to provide suitable field complicated landform and the Portable in-situ test device of weather.
To reach above-mentioned purpose, invention broadly provides following technical scheme：
On the one hand, the embodiments of the invention provide a kind of field riverbank in-situ testing device, described device to include：Wash away and set
Standby and diversion equipment；The flush equipment include U-shaped baffle plate, the bottom plate that is connected with U-shaped baffle plate lower edge and with U-shaped baffle plate
The horizontal plate that wooden partition relative side in middle part is set；The height of horizontal plane is higher than where the bottom plate where the horizontal plate
The height of horizontal plane, the horizontal plate are connected with the bottom plate by swash plate；Offered on the wooden partition of the U-shaped baffle plate into water
Mouth and delivery port, the water outlet are provided with control wet part；
The entrance connection water source of the diversion equipment, the outlet of the diversion equipment connects with the water inlet；
The U-shaped baffle plate, the bottom plate and the swash plate form scour trough；
The diversion equipment introduces current in the scour trough, and the horizontal plate is inserted in the soil body to be measured, the punching
The soil body to be measured is with the natural phenomena of simulated flow concave bank described in current scour in brush groove.
Preferably, the water inlet, in a side wall of the U-shaped baffle plate, the delivery port is located at another side wall
On；
Dividing plate is set in one end of the scour trough of the water inlet, the scour trough is divided into reality by the dividing plate
Scour trough and area of slack water；The length of the horizontal plate and the equal length of the actual scour trough；
Side shield of the U-shaped baffle plate close to the area of slack water has extension baffle plate；U-shaped baffle plate, institute close to area of slack water
State extension baffle plate, bottom plate and dividing plate and form unhurried current groove；
The current of introducing flow into the unhurried current groove by the water inlet, when the liquid level in the unhurried current groove higher than it is described every
After the height of plate, water automatically flows into the actual scour trough, and the liquid level in the actual scour trough is higher than the height of the swash plate
Afterwards, the soil body to be measured described in current scour.
Preferably, the dividing plate is welded in the scour trough；It is vertical between the bottom plate and the horizontal plate
Distance is identical with the height of the dividing plate.
Preferably, the control wet part is by being welded in the neck on delivery port periphery and the water control drainer in the insertion neck
Plate is formed, and the water control drainer plate is moved up and down in the neck with adjusting water outlet flow.
Preferably, described device includes scour trough support bar, the support bar is drill rod, and quantity is 4；One level side
To drill rod and the drill rod of a vertical direction by iron wire be in cross bundled fixed, the drill rod insertion of the horizontal direction is to be measured
In the soil body of riverbank, in the drill rod insertion river bed soil body of the vertical direction.
Preferably, described device includes hook, the hook is on the middle part wooden partition of the U-shaped baffle plate, the extension
Hook washes away the drill rod fixation on bank bank to fix scour trough by nylon rope with insertion.
Preferably, the entrance of the diversion equipment is connected by water pipeline with filter plant, the filter plant is inserted
Enter in the water body of riverbank；The outlet of the diversion equipment is connected by water outlet pipeline with the water inlet；Set on the water outlet pipeline
There is water control valve.
Preferably, the water inlet is shaped as circle, a diameter of 5cm-6cm；Being shaped as the delivery port is square,
Size is 5cm × 8cm；
Described device includes runoff bucket, its be used to holding from the delivery port release washed away the soil body to be measured containing sand
Water.
Preferably, the material of the scour trough and the horizontal plate is stainless steel, the thickness of the stainless steel is
2mm；The angle of the swash plate and the bottom plate is 40 ° -50 °.
On the other hand, the embodiments of the invention provide a kind of field riverbank home position testing method, methods described to include following
Step：
Step 1, riverbank is chosen, riverbank section processing is smooth；
Step 2, dig out scour trough in the soil body of riverbank and taken up space, scour trough is installed in the space, by level side
To drill rod insert in the riverbank soil body to be measured, by the drill rod insertion river bed soil body of vertical direction；
Step 3, selection are easy to extract the position installation water pump of river, adjust pump power and valve, water speed is reached pre-
If switched off the pump after current scour flow velocity；
Step 4, the delivery port closed on U-shaped baffle plate, start water pump, the first water filling in scour trough, when the depth of water reaches default
Water fender is above carried during depth, is discharged water while water inlet, allowing in scour trough the water velocity of the concave bank soil body to reach setting will
Ask, the basic homeostasis of water quantity holding, water containing silt is collected with runoff bucket；
Step 5, river bank scouring total time is set, the timing node sample bottle in setting is collected water sample and detected respectively；
The water sample that step 6, filtering drying are collected, weighs Sediment quality, asks for the quality of whole bucket silt in proportion；
Step 7, wash away after the completion of all deposition gravel in collecting tank bottom do grain composition, determine grain composition；
Step 8, using three-dimensional laser scanner determine current scour before and after riverbank pattern；
Step 9, take 3 groups of soil samples washing away bank, determine the Shear Strength Index of soil sample, density, moisture content, root area
Than.
Compared with prior art, the beneficial effects of the invention are as follows：
Test device and method are washed away in field riverbank provided by the invention original position, and the original position for carrying out the natural riverbank in field is washed away
Experiment, with reference to the actual conditions on current scour riverbank, consider every influence factor during experiment, ensuring result of the test
In the case of accurately and reliably, the understanding with reference to field investigation and to existing washout test device, it is determined that being washed away using original position
Experiment, observe the critical bar of migration rule and riverbank soil body avalanche of the riverbank soil body of different constituents under flow action
Part, promote current scour process to be more nearly field normal erosion situation, so as to make to obtain wash away data more accurately with can
Lean on, and the test device of the present invention is easy to use, and measurement is accurate, and cost is relatively low.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram for the field riverbank in-situ testing device that the embodiment of the present invention 1 provides；
Fig. 2 is the dimensional structure diagram for the field riverbank in-situ testing device that the embodiment of the present invention 2 provides；
Fig. 3 is the control wet part floor map of field riverbank provided in an embodiment of the present invention in-situ testing device；
Fig. 4 is the side view of field riverbank provided in an embodiment of the present invention in-situ testing device；
Fig. 5 is grading curve figure at section 10-20cm in riverbank provided in an embodiment of the present invention.
Reference：
1. flush equipment, 101.U type baffle plate .102. bottom plates, 103. swash plates, 104. horizontal plates, 105. dividing plates, 106. prolong
Stretch baffle plate, 107. water inlets, 108. delivery ports, 109. control wet parts, 1091. necks, 1092. water control drainer plates, 110. scour troughs,
1101. actual scour troughs, 1102. unhurried current grooves；
2. diversion equipment, 201. pumps, 202. entrances, 203. outlets, 204. filter plants, 205. water control valves；
3. runoff bucket, 4. drill rods, 5. hooks.
Embodiment
Be further illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below with compared with
Good embodiment, to embodiment, technical scheme, feature and its effect according to the present patent application, describe in detail as after.Under
State it is bright in multiple embodiments in special characteristic, structure or feature can be combined by any suitable form.
Embodiment 1
As shown in figure 1, a kind of field riverbank in-situ testing device, including：Flush equipment 1 and diversion equipment 2；It is above-mentioned to wash away
Equipment 1 includes U-shaped baffle plate 101, the bottom plate 102 being connected with the U-shaped lower edge of baffle plate 101 and in the middle part wooden partition with U-shaped baffle plate 101
The horizontal plate 104 that relative side is set；The height of the above-mentioned place horizontal plane of horizontal plate 104 is higher than the above-mentioned institute of bottom plate 102
In the height of horizontal plane, above-mentioned horizontal plate 104 is connected with above-mentioned bottom plate 102 by swash plate 103；The plate of above-mentioned U-shaped baffle plate 101
Water inlet 107 and delivery port 108 are offered on wall, control wet part 109 is provided with above-mentioned delivery port 108；Above-mentioned diversion equipment 2
Entrance 202 connects water source, and the outlet 203 of above-mentioned diversion equipment connects with above-mentioned water inlet 107；It is above-mentioned U-shaped baffle plate 101, above-mentioned
Bottom plate 102 and above-mentioned swash plate 103 form scour trough 110；Above-mentioned diversion equipment 2 introduces current in above-mentioned scour trough 110, above-mentioned
Horizontal plate 104 is inserted in the soil body to be measured, and the above-mentioned soil body to be measured of the current scour in above-mentioned scour trough 110 is washed away with simulated flow
The natural phenomena on riverbank.
Embodiment 2
As shown in Fig. 2 a kind of field riverbank in-situ testing device, including：Flush equipment 1 and diversion equipment 2；It is above-mentioned to wash away
Equipment 1 includes U-shaped baffle plate 101, the bottom plate 102 being connected with the U-shaped lower edge of baffle plate 101 and in the middle part wooden partition with U-shaped baffle plate 101
The horizontal plate 104 that relative side is set；The height of the above-mentioned place horizontal plane of horizontal plate 104 is higher than the above-mentioned institute of bottom plate 102
In the height of horizontal plane, above-mentioned horizontal plate 104 is connected with above-mentioned bottom plate 102 by swash plate 103；The plate of above-mentioned U-shaped baffle plate 101
Water inlet 107 and delivery port 108 are offered on wall, control wet part 109 is provided with above-mentioned delivery port 108；Above-mentioned diversion equipment 2
Entrance 202 connects water source, and the outlet 203 of above-mentioned diversion equipment connects with above-mentioned water inlet 107；It is above-mentioned U-shaped baffle plate 101, above-mentioned
Bottom plate 102 and above-mentioned swash plate 103 form scour trough 110；Above-mentioned water inlet 107 is above-mentioned in a side wall of above-mentioned U-shaped baffle plate
Delivery port 108 is in another side wall；Dividing plate 105 is set in one end of the above-mentioned scour trough 110 of above-mentioned water inlet 107, on
State dividing plate 105 and above-mentioned scour trough 110 is divided into actual scour trough 1101 and area of slack water；Above-mentioned U-shaped baffle plate is close to above-mentioned area of slack water
Side shield have extension baffle plate 106；U-shaped baffle plate, above-mentioned extension baffle plate 106, bottom plate 102 and dividing plate 105 close to area of slack water
Form unhurried current groove 1102；The length of above-mentioned horizontal plate 104 and the equal length of above-mentioned actual scour trough 1102；It is above-mentioned horizontal slotting
Plate 104 is inserted in the soil body to be measured, and current are introduced above-mentioned unhurried current groove by above-mentioned diversion equipment 2, the liquid in above-mentioned unhurried current groove 1102
After position is higher than the height of aforementioned barriers 105, water automatically flows into above-mentioned actual scour trough 1101, in above-mentioned actual scour trough 1101
After liquid level is higher than the height of above-mentioned swash plate 103, the above-mentioned soil body to be measured of current scour is with the natural phenomena of simulated flow concave bank.
As the preferred of above-described embodiment, aforementioned barriers 105 are welded in above-mentioned scour trough 110；Above-mentioned bottom plate 102 with it is upper
State that the vertical range between horizontal plate 104 is identical with the height of aforementioned barriers 105, the height of dividing plate 105 is mainly designed to use
In stable initial water inlet current, vertical range and dividing plate identical between bottom plate and horizontal plate are highly mainly designed to conveniently
The making of scour trough, as depicted in figs. 1 and 2.
As the preferred of above-described embodiment, above-mentioned control wet part 109 is used to controlling the flow of water, and above-mentioned control wet part can be with
It is valve or baffle plate；Preferably, above-mentioned control wet part is by being welded in the neck 1091 on delivery port periphery and inserting in above-mentioned neck
Water control drainer plate 1092 form, as shown in figure 3, above-mentioned water control drainer plate 1092 moves up and down in above-mentioned neck 1091, pass through tune
Save the size adjusting water outlet flow of delivery port 108.
As the preferred of above-described embodiment, as shown in figure 4, said apparatus includes scour trough support bar, above-mentioned support bar is
Drill rod 4, quantity are 4；The drill rod of the drill rod of one horizontal direction and a vertical direction is in cross bundled fixed by iron wire, such as
Shown in Fig. 4, the drill rod of above-mentioned horizontal direction is inserted in the riverbank soil body to be measured, the drill rod insertion river bed soil body of above-mentioned vertical direction
In.
As the preferred of above-described embodiment, as shown in figure 4, said apparatus includes hook 5, above-mentioned hook is located at above-mentioned U-shaped
On the middle part wooden partition of baffle plate, the drill rod that above-mentioned hook washes away bank bank by nylon rope with insertion is fixedly connected, and passes through hook
It is more firm that design makes flush equipment be contacted with the soil body.
As the preferred of above-described embodiment, as shown in Fig. 2 the entrance 202 of above-mentioned diversion equipment 2 passes through water pipeline and mistake
Filter equipment 204 connects, and in above-mentioned filter plant insertion riverbank water body, filter plant may filter that in river compared with bigger material；It is above-mentioned
The outlet 203 of diversion equipment 2 is connected by water outlet pipeline with above-mentioned water inlet 107；Above-mentioned water outlet pipeline is provided with water control valve
205, above-mentioned water control valve is used to control the water-carrying capacity introduced in flush equipment 1.
As the preferred of above-described embodiment, as depicted in figs. 1 and 2, scour trough entire length is 120cm, is highly 45cm,
Width 40cm；Wherein unhurried current slot length is 20cm, width 25cm, and unhurried current groove water fender is highly 5cm；Bottom land baseplate width is
10cm, the vertical range between bottom land bottom plate and horizontal plate are 5cm, and the width of horizontal plate is 25cm, when installing scour trough
Horizontal plate will insert minimum 15cm in the soil body of riverbank；The height of the water fender of U-shaped baffle plate both sides is 43cm, width 30cm,
Water inlet is diameter 6cm circular hole, and delivery port is 5cm × 8cm square openings；The steel that scour trough support bar is grown using four 1.5m
Pricker, insert respectively in riverbank and the river bed soil body, use iron wire bundled fixed in cross two-by-two；Said apparatus also includes runoff bucket 3,
It is used to hold the arsenicbearing gold ores for washing away the soil body to be measured released from above-mentioned delivery port.
As the preferred of above-described embodiment, the material of above-mentioned scour trough and above-mentioned horizontal plate is stainless steel, it is above-mentioned not
The thickness of rust steel is 2mm；The angle (i.e. the gradient) of above-mentioned swash plate and above-mentioned bottom plate is 40 ° -50 °, preferably 45 °, using the angle
Conveniently wash away the riverbank soil body particle to get off and fall into bottom of gullet in time and gone out from delivery port.
Embodiment 3
A kind of field riverbank home position testing method, the described method comprises the following steps：
Step 1, the experiment about 50km the Yellow River tributary orchid wood on the south Huang Nan Zhouhes Nan County, Qinghai Province arrange heating bending river,
Choose typical riverbank, more than riverbank length 150cm, more than riverbank height 70cm (riverbank section soil body agensis longitudinal direction crack
And without rat hole), riverbank section processing is smooth；
Step 2, using long cut native knife and take slot in scour trough level board insertion position, flush equipment is installed, by level
The drill rod in direction is inserted in the riverbank soil body to be measured, by the drill rod of vertical direction in the U-shaped baffle plate insertion river bed soil body of scour trough；
Step 3, selection are easy to extract the position installation water pump of river, adjust pump power and valve, water speed is reached pre-
If switched off the pump after current scour flow velocity；
Step 4, the delivery port closed on U-shaped baffle plate, start water pump, the first water filling in scour trough, washed away when the depth of water reaches
Water fender is above carried during groove bottom above 20cm or so, is discharged water while water inlet, allows the current of the concave bank soil body in scour trough
Speed reaches the basic homeostasis of sets requirement, water quantity holding, and water containing silt is collected with runoff bucket；
Step 5, river bank scouring total time is set, the timing node sample bottle in setting is collected water sample and detected respectively；
The water sample that step 6, filtering drying are collected, weighs Sediment quality, asks for the quality of whole bucket silt in proportion；
Detected by collecting water sample to embodiment 3, it is as shown in table 1 that it detects data.
The water sample filtration test data logger of table 1.
Step 7, wash away after the completion of all deposition gravel in collecting tank bottom do grain composition, determine grain composition；
Sieve test is carried out to the grains of sand sample after natural drying, is by the quality of soil sample ratio that aperture is 40mm sieves
100%, it is 50.3% by the quality of soil sample ratio that aperture is 2mm sieves, soil particle minimum grain size>0.011mm, granular-grade are write music for a song
Line chart is shown in Fig. 5；
Step 8, using three-dimensional laser scanner determine current scour before and after riverbank pattern；
Step 9, take 3 groups of soil samples washing away bank, determine the Shear Strength Index of soil sample, density, moisture content, root area
Than.
The Shear Strength Index of three groups of soil samples, density, moisture content, root area ratio is taken to be defined by average value, such as the institute of table 2
Show.
The concave bank soil sample relevant parameter of table 2.
| Soil sample is numbered | Cohesive strength c/kPa | Internal friction angle Φ/° | Density/g/cm3 | Moisture content/% | Root area ratio/% |
| Ⅲ-3 | 11.83 | 18.2 | 1.49 | 52.12 | 0.08 |
It is an object of the invention to provide field riverbank original position to wash away test device and method of testing, carries out the natural river in field
The washout test in situ of bank；With reference to the actual conditions on current scour riverbank, every influence factor during experiment is considered,
In the case of ensuring result of the test accurately and reliably, the understanding with reference to field investigation and to existing washout test device, it is determined that
Using washout test in situ, migration rule and the riverbank soil body of the riverbank soil body of different constituents under flow action are observed
The critical condition of avalanche；Current scour process is promoted to be more nearly field normal erosion situation, so as to which make to obtain washes away data
More accurately with reliably.Test device of the invention is easy for installation, easy to carry, measurement is accurate, cost is relatively low, and suitable popularization makes
With.
Part, those skilled in the art can not select from the prior art to the greatest extent in the embodiment of the present invention.
Disclosed above is only the embodiment of the present invention, but protection scope of the present invention is not limited thereto, and is appointed
What those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using above-mentioned scope of the claims as
It is accurate.
Claims (10)
1. a kind of field riverbank in-situ testing device, it is characterised in that described device includes：Flush equipment and diversion equipment；
The flush equipment includes U-shaped baffle plate, the bottom plate being connected with U-shaped baffle plate lower edge and in the middle part wooden partition with U-shaped baffle plate
The horizontal plate that relative side is set；The height of horizontal plane is higher than horizontal plane where the bottom plate where the horizontal plate
Highly, the horizontal plate is connected with the bottom plate by swash plate；Water inlet and water outlet are offered on the wooden partition of the U-shaped baffle plate
Mouthful, the water outlet is provided with control wet part；
The entrance connection water source of the diversion equipment, the outlet of the diversion equipment connects with the water inlet；
The U-shaped baffle plate, the bottom plate and the swash plate form scour trough；
The diversion equipment introduces current in the scour trough, and the horizontal plate is inserted in the soil body to be measured, the scour trough
The soil body to be measured is with the natural phenomena of simulated flow concave bank described in interior current scour.
2. a kind of field riverbank in-situ testing device according to claim 1, it is characterised in that the water inlet is located at institute
State in a side wall of U-shaped baffle plate, the delivery port is in another side wall；
Dividing plate is set in one end of the scour trough of the water inlet, the scour trough is divided into by the dividing plate actually to be washed away
Groove and area of slack water；The length of the horizontal plate and the equal length of the actual scour trough；
Side shield of the U-shaped baffle plate close to the area of slack water has extension baffle plate；U-shaped baffle plate close to area of slack water, described prolong
Stretch baffle plate, bottom plate and dividing plate and form unhurried current groove；
The current of introducing flow into the unhurried current groove by the water inlet, when the liquid level in the unhurried current groove is higher than the dividing plate
After height, water automatically flows into the actual scour trough, after the liquid level in the actual scour trough is higher than the height of the swash plate, water
Stream washes away the soil body to be measured.
3. a kind of field riverbank in-situ testing device according to claim 2, it is characterised in that the dividing plate is welded in institute
State in scour trough；The height of vertical range and the dividing plate between the bottom plate and the horizontal plate is identical.
4. a kind of field riverbank in-situ testing device according to claim 1, it is characterised in that the control wet part is by welding
Be connected to the neck on delivery port periphery and the water control drainer plate composition inserted in the neck, the water control drainer plate in the neck on
Lower movement is with adjusting water outlet flow.
5. a kind of field riverbank in-situ testing device according to claim 1, it is characterised in that described device includes washing away
Groove support bar, the support bar are drill rod, and quantity is 4；The drill rod of the drill rod of one horizontal direction and a vertical direction passes through iron
Silk is in cross bundled fixed, and the drill rod of the horizontal direction is inserted in the riverbank soil body to be measured, and the drill rod of the vertical direction is inserted
Enter in the soil body of river bed.
6. a kind of field riverbank in-situ testing device according to claim 1, it is characterised in that described device includes hanging
Hook, for the hook on the middle part wooden partition of the U-shaped baffle plate, the hook washes away the steel on bank bank by nylon rope with insertion
Pricker fixation is to fix scour trough.
7. a kind of field riverbank in-situ testing device according to claim 1, it is characterised in that the diversion equipment enters
Mouth is connected by water pipeline with filter plant, in the filter plant insertion riverbank water body；The outlet of the diversion equipment leads to
Water outlet pipeline is crossed to connect with the water inlet；The water outlet pipeline is provided with water control valve.
A kind of 8. field riverbank in-situ testing device according to claim 1, it is characterised in that the shape of the water inlet
For circle, a diameter of 5cm-6cm；Being shaped as the delivery port is square, and size is 5cm × 8cm；
Described device includes runoff bucket, and it is used to hold the arsenicbearing gold ores for washing away the soil body to be measured released from the delivery port.
A kind of 9. field riverbank in-situ testing device according to claim 1, it is characterised in that the scour trough with it is described
The material of horizontal plate is stainless steel, and the thickness of the stainless steel is 2mm；The angle of the swash plate and the bottom plate is 40 °-
50°。
10. a kind of field riverbank home position testing method, it is characterised in that the described method comprises the following steps：
Step 1, riverbank is chosen, riverbank section processing is smooth；
Step 2, dig out scour trough in the soil body of riverbank and taken up space, scour trough is installed in the space, by horizontal direction
Drill rod is inserted in the riverbank soil body to be measured, by the drill rod insertion river bed soil body of vertical direction；
Step 3, selection are easy to extract the position installation water pump of river, adjust pump power and valve, water speed is reached default water
Switched off the pump after stream erosive velocity；
Step 4, the delivery port closed on U-shaped baffle plate, start water pump, the first water filling in scour trough, when the depth of water reaches predetermined depth
When on carry water fender, discharged water while water inlet, allow the water velocity of the concave bank soil body in scour trough to reach sets requirement, water
Amount keeps basic homeostasis, and water containing silt is collected with runoff bucket；
Step 5, river bank scouring total time is set, the timing node sample bottle in setting is collected water sample and detected respectively；
The water sample that step 6, filtering drying are collected, weighs Sediment quality, asks for the quality of whole bucket silt in proportion；
Step 7, wash away after the completion of all deposition gravel in collecting tank bottom do grain composition, determine grain composition；
Step 8, using three-dimensional laser scanner determine current scour before and after riverbank pattern；
Step 9, take 3 groups of soil samples washing away bank, determine the Shear Strength Index of soil sample, density, moisture content, root area ratio.
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| CN110132779A (en) * | 2019-05-16 | 2019-08-16 | 中国十九冶集团有限公司 | For characterizing the three dimensional analysis method of concrete surface Scouring Characteristic |
| CN111474086A (en) * | 2020-04-24 | 2020-07-31 | 三峡大学 | Test device and method for bank slope soil body washout starting |
| CN111896366A (en) * | 2020-08-19 | 2020-11-06 | 黄河水利委员会黄河水利科学研究院 | Method for simulating multi-structure river bank impedance water flow scouring |
| CN113484498A (en) * | 2021-06-18 | 2021-10-08 | 西南林业大学 | In-situ scouring measuring device and using method thereof |
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