CN110146396A - Measure the device and method of the anti-current scour erosion performance of the cementing soil body of microorganism - Google Patents
Measure the device and method of the anti-current scour erosion performance of the cementing soil body of microorganism Download PDFInfo
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- CN110146396A CN110146396A CN201910427898.3A CN201910427898A CN110146396A CN 110146396 A CN110146396 A CN 110146396A CN 201910427898 A CN201910427898 A CN 201910427898A CN 110146396 A CN110146396 A CN 110146396A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
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Abstract
The invention discloses a kind of devices for measuring the anti-current scour erosion performance of the cementing soil body of microorganism, including washing away sink and control water tank, overflow port and adjustable end stop are provided on control water tank, pass through the water level of the lift adjustment overflow of adjustable end stop, the water outlet for controlling water tank washes away the water inlet of sink by valve connection, and the slot bottom for washing away sink is provided with soil body placing groove.Corresponding method is also disclosed simultaneously.Invention emulates the soil bodys accurately to judge the anti-current scour erosion performance of the soil body by the erosion amount of the soil body under measurement soil body antiscour maximum flow rate, certain erosive velocity and flushing time by current scour erosion process.
Description
Technical field
The present invention relates to a kind of device and methods for measuring the anti-current scour erosion performance of the cementing soil body of microorganism, belong to micro-
Biomineralization soil mass consolidation antiscour Characteristics Detection field.
Background technique
Microorganism induction precipitation of calcium carbonate is the mineralization that microorganism occurs in metabolism, is formed by calcium carbonate
With excellent cohesiveness and consolidation performance, there is good scour resistance and certain soil strength, this technology is in building
The numerous areas such as engineering, material engineering, environmental project are widely applied.
The device for having the measurement anti-current scour erosion performance of the cementing soil body of microorganism at present is mostly measurement wave to cementing
The impact damage of slope surface, tide destroy the immersion of cementing slope protection, river unhurried current washes away brokenly to the long-term accumulated in cementing riverbed
Bad, miniature jet washes away the erosion of cementing dust devil, rainwater to cementing slope protection, and lacks the anti-high-velocity flow of binder soil surface layer
Wash away the device and process of erosion.
Summary of the invention
The present invention provides a kind of device and methods for measuring the anti-current scour erosion performance of the cementing soil body of microorganism, solve
The above problem existing for existing apparatus.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
The device of the anti-current scour erosion performance of the cementing soil body of microorganism is measured, including washes away sink and control water tank, control
It is provided with overflow port and adjustable end stop on water tank processed, by the water level of the lift adjustment overflow of adjustable end stop, controls going out for water tank
The water inlet of sink is washed away at the mouth of a river by valve connection, and the slot bottom for washing away sink is provided with soil body placing groove.
It further include water tank and water pump, the inlet communication of water tank washes away the outlet of sink, will be in water tank by water pump
Water be pumped to control water tank.
It further include spill box, spill box collects the water flowed out from overflow port.
Spill box is connected to water tank by reflux line.
The method for measuring the anti-current scour erosion performance device of the cementing soil body of microorganism, including,
Measure adjustable end stop height and erosive velocity calibration relationship, wherein adjustable end stop height be adjustable end stop top margin extremely
The height on overflow port bottom edge；
Measure the maximum flow rate V of the anti-water erosion of soil body surface；
Measure erosion amount L of the soil body in certain flushing time.
It measures adjustable end stop height and the process of erosive velocity calibration relationship is,
Soil body placing groove is covered, valve is closed, adjustable end stop is adjusted to elemental height, past control water tank with water, until
Overflow port waterflow stabilization；
Valve is opened, the corresponding erosive velocity of adjustable end stop elemental height is measured；
Adjustable end stop height is adjusted, the highly corresponding erosive velocity of different adjustable end stops is obtained, draws erosive velocity with liter
The curve of downshift plate height change obtains adjustable end stop height with the rate for washing away stream and determines relationship.
Measurement the anti-water erosion maximum flow rate of soil body surface process be,
The soil body is put into soil body placing groove, valve is closed, adjustable end stop is adjusted to elemental height, toward control water tank note
Water, until overflow port waterflow stabilization；
Open valve, the current scour soil body；
Adjust adjustable end stop height, adjustable end stop height when record has soil particle to be taken away by water flow；
According to the calibration relationship of adjustable end stop height and erosive velocity, the anti-water erosion maximum flow rate V of soil body surface is obtained.
Soil body surface after washing away to V carries out penetration resistance measurement, and the foundation bearing of the soil body is conversed according to penetration resistance
Power.
Measuring soil body process of erosion amount in certain flushing time is,
Weigh the mass M 1 of the soil body；
The soil body is put into soil body placing groove, closes valve；
Choose the erosive velocity V1 for being greater than V；
Adjustable end stop is adjusted to height corresponding with erosive velocity V1, toward control water tank with water, until overflow port water flow
Stablize；
Open valve, the current scour soil body；
After washing away T time, valve is closed, the soil body is taken out and is dried, weighs soil body mass M 2；
Erosion amount L=M1-M2 in T time.
Soil body surface after washing away to V1 carries out penetration resistance measurement, and the foundation bearing of the soil body is conversed according to penetration resistance
Power.
Advantageous effects of the invention: invention emulates the soil bodys by current scour erosion process, pass through measurement soil
The erosion amount of the soil body under body antiscour maximum flow rate, certain erosive velocity and flushing time corrodes the anti-current scour of the soil body
Performance is accurately judged.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, the device of the measurement anti-current scour erosion performance of the cementing soil body of microorganism, including wash away sink 1, control
Water tank 2, water tank 3, water pump 6 and spill box 5 processed.
It is provided with overflow port and adjustable end stop 4 on control water tank 2, by the water level of the lift adjustment overflow of adjustable end stop 4,
Spill box 5 collects the water flowed out from overflow port, and spill box 5 is connected to water tank 3 by reflux line 7, and control water tank 2 goes out
The water inlet of sink 1 is washed away by valve connection in the mouth of a river, and the slot bottom for washing away sink 1 is provided with soil body placing groove 8, water tank 3 into
The outlet of sink 1 is washed away in mouth connection, is sent the water pump 6 in water tank 3 to control water tank 2 by water pump 6.
Washing away sink 1 is Rectangular Water Trough, and having a size of 3m × 0.3m × 0.5m, washing away sink 1 be may be provided on bracket, be washed away
Sink 1 outlet be located at water tank 3 top, water flow self weight under the action of, automatically flow into water tank 3, wash away sink into
The mouth of a river is in the same plane with slot bottom, and water stream is gradually transitions tiled state in washing away sink 1, equably puts to the soil body
The soil body set in slot is washed away.
Control water tank 2 is open-topped water tank, is also provided on bracket, size is about 1.2m × 1.2m × 0.8m, water pump 6
The water of pumping is poured into from top opening, and the outlet of control water tank 2 is located at bottom, and overflow port and adjustable end stop 4 are located at control water tank 2
Side, overflow port width is about 0.2m, and adjustable end stop 4 includes and the baffle of control 2 side wall of water tank sliding connection and drive
Common electric cylinders etc. can be used in the lifting structure of baffle lifting, lifting structure, and baffle is located at overflow port, keep water in sliding
Close property, more than water, that is, overflow outflow of 4 height of adjustable end stop, 4 height of adjustable end stop is 4 top margin of adjustable end stop to overflow port bottom edge
Height.
Spill box 5 is open-topped water tank, is also provided on bracket, size is about 0.5m × 0.5m × 0.6m, is located at
2 overflow port side of water tank is controlled, the water gone out from control 2 overflow of water tank is pooled in spill box 5.
8 size of soil body placing groove is about 0.5m × 0.3m × 0.05m, by fluid-tight glass cement and washes away sink 1 sternly
Close connection, for holding the cementing soil body 9 of microorganism induction tosca.
Water in water tank 3 is pumped by pumping conduit and controls water tank 2 by water pump 6, pumping conduit 80~100mm of diameter,
Pipeline one end is put into water tank 3, and the other end is put into control water tank 2.
The method of above-mentioned apparatus, comprising the following steps:
Step 1, the calibration relationship of 4 height of adjustable end stop and erosive velocity is measured.
Detailed process are as follows:
11) it is filled the water into water tank 3, covers soil body placing groove 8, closed valve, adjustable end stop 4 is adjusted to initial height
Degree is filled the water toward control water tank 2, until overflow port waterflow stabilization.
The water filling into water tank 3 covers soil with organic glass plate until at 3 10~20cm of top of water surface distance water tank
Body placing groove 8 flushes its upper surface with 1 slot bottom of sink is washed away, and closes valve, and adjustable end stop 4 is adjusted to elemental height (just
Depending on height begin according to the actual situation), water pump 6 is opened, is filled the water toward control water tank 2, waits the spill stream of water tank 2 to be controlled steady
It is fixed.
12) valve is opened, the corresponding erosive velocity of 4 elemental height of adjustable end stop is measured.
Erosive velocity is measured using Particle tracking velocity measuring technique (PTV), specific as follows:
The camera horizon that pixel resolution is A × B (A >=B) is fixed at 8 top certain altitude of soil body placing groove,
Arrange that the long side of its imaging area along Wash flow direction, wherein pixel resolution is at least 640 × 480, and the shooting soil body is put
Setting 8 physical length of slot is D, spatial resolution R=D/A, and camera shooting frame per second F is 25~30 frames/s；It is thrown into the water stream sprayed
Enter the phenol formaldehyde foam tracer grain that diameter is 4~5mm, flows through the soil body with Wash flow using video camera shooting tracer grain and place
The video pictures of slot upper area, and on computers by the time upper two adjacent frames in the video pictures for tracer grain occur
Image individually extracts, the pixel coordinate (x1, y1) of the tracer grain center in available two images and (x2,
Y2), to obtain the pixel distance of tracer grain movementTherefore movement it is practical away from
From Z=S × R, erosive velocity V=ZF is finally obtained.
13) 4 height of adjustable end stop is adjusted, the highly corresponding erosive velocity of different adjustable end stops 4 is obtained, draws erosive velocity
With the curve of 4 height change of adjustable end stop, the calibration relationship of 4 height of adjustable end stop with erosive velocity is obtained.
Step 2, the maximum flow rate V of the anti-water erosion in 9 surface of the soil body is measured.
Detailed process are as follows:
21) it is filled the water into water tank 3, the soil body 9 is put into soil body placing groove 8, valve is closed, adjustable end stop 4 is adjusted to
Elemental height is filled the water toward control water tank 2, until overflow port waterflow stabilization.
22) valve, the current scour soil body 9 are opened.
23) 4 height of adjustable end stop is adjusted, 4 height of adjustable end stop when record initial time has soil particle to be taken away by water flow
H。
24) according to the calibration relationship of 4 height of adjustable end stop and erosive velocity, the corresponding erosive velocity of H is obtained, this washes away stream
Speed is the anti-water erosion maximum flow rate V in 9 surface of the soil body.
9 surface of the soil body after washing away to V carries out penetration resistance measurement (measuring using Type portable penetration meter), according to
Penetration resistance value and foundation bearing capacity the conversion table of " CECS54-93 Type portable penetration meter testing regulations ", converse the ground of the soil body 9
Base bearing capacity.
Step 3, erosion amount L of the measurement soil body 9 in certain flushing time.
Detailed process are as follows:
31) mass M 1 of the soil body 9 is weighed.
32) soil body 9 is put into soil body placing groove 8, closes valve.
33) the erosive velocity V1 for being greater than V is chosen.
34) adjustable end stop 4 is adjusted to height corresponding with erosive velocity V1, is filled the water toward control water tank 2, until overflow port
Waterflow stabilization.
35) valve, the current scour soil body 9 are opened.
36) after washing away T time, valve is closed, the soil body 9 is taken out and is dried, weighs 9 mass M 2 of the soil body.
37) erosion amount L=M1-M2 in T time.
9 surface of the soil body after washing away to V1 carries out penetration resistance measurement, is held according to the ground that penetration resistance converses the soil body 9
Carry power.
The above-mentioned soil body 9 can be first placed in container, and container and the soil body 9 are then put into togerther soil body placing groove
8, when weighing, Rice container and the soil body 9 are weighed together, can guarantee the complete of the soil body 9 in this way.
Invention emulates the soil bodys 9 by current scour erosion process, by measurement 9 antiscour maximum flow rate of the soil body, centainly
The erosion amount of the soil body 9 under erosive velocity and flushing time accurately judges the anti-current scour erosion performance of the soil body 9.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. measuring the device of the anti-current scour erosion performance of the cementing soil body of microorganism, it is characterised in that: including washing away sink and control
Water tank processed controls and is provided with overflow port and adjustable end stop on water tank, passes through the water level of the lift adjustment overflow of adjustable end stop, control
The water outlet of water tank washes away the water inlet of sink by valve connection, and the slot bottom for washing away sink is provided with soil body placing groove.
2. the device of the measurement anti-current scour erosion performance of the cementing soil body of microorganism according to claim 1, feature exist
In: it further include water tank and water pump, the inlet communication of water tank washes away the outlet of sink, by water pump by the water pump in water tank
It send to control water tank.
3. the device of the measurement anti-current scour erosion performance of the cementing soil body of microorganism according to claim 2, feature exist
In: it further include spill box, spill box collects the water flowed out from overflow port.
4. the device of the measurement anti-current scour erosion performance of the cementing soil body of microorganism according to claim 3, feature exist
In: spill box is connected to water tank by reflux line.
5. special based on the method for the measurement anti-current scour erosion performance device of the cementing soil body of microorganism described in claim 1
Sign is: including,
The calibration relationship of adjustable end stop height and erosive velocity is measured, wherein adjustable end stop height is adjustable end stop top margin to overflow
The height on mouth bottom edge；
Measure the maximum flow rate V of the anti-water erosion of soil body surface；
Measure erosion amount L of the soil body in certain flushing time.
6. the method for the measurement anti-current scour erosion performance device of the cementing soil body of microorganism according to claim 5, special
Sign is: it measures adjustable end stop height and the process of erosive velocity calibration relationship is,
Soil body placing groove is covered, valve is closed, adjustable end stop is adjusted to elemental height, toward control water tank with water, until overflow
Mouth waterflow stabilization；
Valve is opened, the corresponding erosive velocity of adjustable end stop elemental height is measured；
Adjustable end stop height is adjusted, the highly corresponding erosive velocity of different adjustable end stops is obtained, draws erosive velocity and kept off with lifting
The curve of plate height change obtains adjustable end stop height with the rate for washing away stream and determines relationship.
7. the method for the measurement anti-current scour erosion performance device of the cementing soil body of microorganism according to claim 5, special
Sign is: measurement the anti-water erosion maximum flow rate of soil body surface process be,
The soil body is put into soil body placing groove, valve is closed, adjustable end stop is adjusted to elemental height, toward control water tank with water, directly
To overflow port waterflow stabilization；
Open valve, the current scour soil body；
Adjust adjustable end stop height, adjustable end stop height when record has soil particle to be taken away by water flow；
According to the calibration relationship of adjustable end stop height and erosive velocity, the anti-water erosion maximum flow rate V of soil body surface is obtained.
8. the method for the measurement anti-current scour erosion performance device of the cementing soil body of microorganism according to claim 7, special
Sign is: the soil body surface after washing away to V carries out penetration resistance measurement, and the foundation bearing of the soil body is conversed according to penetration resistance
Power.
9. the method for the measurement anti-current scour erosion performance device of the cementing soil body of microorganism according to claim 5, special
Sign is: measuring soil body process of erosion amount in certain flushing time is,
Weigh the mass M 1 of the soil body；
The soil body is put into soil body placing groove, closes valve；
Choose the erosive velocity V1 for being greater than V；
Adjustable end stop is adjusted to height corresponding with erosive velocity V1, toward control water tank with water, until overflow port waterflow stabilization；
Open valve, the current scour soil body；
After washing away T time, valve is closed, the soil body is taken out and is dried, weighs soil body mass M 2；
Erosion amount L=M1-M2 in T time.
10. the method for the measurement anti-current scour erosion performance device of the cementing soil body of microorganism according to claim 9, special
Sign is: the soil body surface after washing away to V1 carries out penetration resistance measurement, and the foundation bearing of the soil body is conversed according to penetration resistance
Power.
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Cited By (1)
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Application publication date: 20190820 |