CN107340333A - Three-dimensional large power supersonic control bubbles silt consolidation pilot system and its method - Google Patents
Three-dimensional large power supersonic control bubbles silt consolidation pilot system and its method Download PDFInfo
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Abstract
The invention discloses a kind of three-dimensional large power supersonic control bubbles silt consolidation pilot system and its method, it is related to environmental geotechnical experimental technique.The system includes three-dimensional ultrasonic test unit（10）, bubbles soil sample test unit（20）, pressure chamber unit（30）And measurement unit（40）；Three-dimensional ultrasonic test unit（10）, bubbles soil sample test unit（20）And measurement unit（40）Respectively with pressure chamber unit（30）Connection.Described three-dimensional ultrasonic test unit（10）By vertical One-Dimensional Ultrasonic ripple unit（11）With radial direction two-dimensional ultrasonic unit（12）Composition.The present invention can meet the needs to the three-dimensional large power supersonic wave excitation of mud application, regulation Air Bubble Size and concentration, the experiment that accurate measurement is carried out to consolidation deformation, pore pressure and ultrasonic energy decay etc..
Description
Technical field
The present invention relates to environmental geotechnical experimental technique, more particularly to a kind of three-dimensional large power supersonic control bubbles to become silted up
Mud consolidation test system and its method, for determine different Air Bubble Sizes and concentration, different three-dimensional high-power ultrasonics with
And bubbles silt consolidation characteristic under the conditions of different consolidation pressures.
Background technology
In order to improve water quality, port, harbour are built, widens navigation channel, basin, it is necessary to carry out dredging dredging operation on a large scale,
It is inevitably generated substantial amounts of mud.The disposal to dredging silt domestic at present mainly directly discard in land throwing area or
Low laying areas, some even take fish pond and cultivated land, and ocean dredging also faces more because the environmental problem that mud brings is thrown at deep-sea
Number switchs to land-based area hydraulic reclamation.But dredging silt moisture content is high, low intensity, it is difficult to directly be developed and utilized to dredging silt.Its
Secondary, dredging silt clay content is high, bad hydraulic permeability, needs several years even longer times to complete consolidation under Gravitative Loads.
Therefore it is quick to discharge contained substantial amounts of water in dredging silt, it is necessary to quickly reduce the moisture content of dredging silt, solve dredging silt
Disposal take up an area the time length, waste preciousness land resource the problem of.
In recent years, ultrasonic technology by its feature of environmental protection, it is easy to operate and practical the advantages that, excitation mud take off
More and more extensive application is obtained in water effect.Under high-power ultrasonics effect, the small bubble in mud pore interior fluid
Core is activated, and ultrasonic activation constantly quickly alternately causes cavitation bubble nuclear disruption, and localized hyperthermia and height are produced in very short time
Pressure, and the shock wave and jet of accompanied by intense, so as to cause moisture and fine grain travel motion in mud.It is however, existing
Indoor silt consolidation test is carried out under without Ultrasonic Conditions mostly, ignores the influence of ultrasonic exciting.Secondly, in mud
Organic matter easily spontaneous carry out anaerobic organism reaction when stacking so that the hole in mud is by liquid and one or more kinds of gas
Body saturation, gas exist in hole in the form of minute bubbles or air pocket include particle, and the presence of bubble changes hole
Fluid properties simultaneously produce coupling with skeleton, have a significant impact to ultrasonic velocity and energy attenuation.Although because mud is consolidated
The development of knot technology so that the research of saturation silt consolidation characteristic has obtained certain achievement, but ignores the shadow of mud bubble
It will be inaccurate to ring obtained mud characteristic, can not meet the needs of Practical Project.Therefore, under large power supersonic wave excitation
The research of the consolidation characteristics of bubbles mud is in such as solid waste landfill, sewage disposal, the training of channel and treatment of soft foundation
Etc. have highly important application value.
In order to study the consolidation characteristics of bubbles mud under large power supersonic wave excitation, conventional indoor consolidation test equipment
It can not meet to require, the high-power three-dimensional ultrasonic consolidation test system of development of new seems particularly urgent and important.
Conventional consolidation test equipment is the effective tool of Consolidation Deformation of Soil under the conditions of one peacekeeping three-dimensional pressure of measure, but
It is that conventional consolidation test equipment can not can not meet to consider ultrasound to applying ultrasonic exciting and regulation Air Bubble Size and concentration
The test requirements document of the consolidation characteristics of bubbles mud under wave excitation.
The content of the invention
The purpose of the present invention be that overcome existing routine consolidation test equipment can not consider large power supersonic wave excitation and
The defects of bubble, there is provided a kind of three-dimensional large power supersonic control bubbles silt consolidation pilot system of high sensitivity and its side
Method.
The object of the present invention is achieved like this：
First, three-dimensional large power supersonic control bubbles silt consolidation pilot system（Abbreviation system）
The system includes three-dimensional ultrasonic test unit, bubbles soil sample test list, pressure chamber unit and measurement unit；
Its position and annexation are：
Three-dimensional ultrasonic test unit, bubbles soil sample test unit and measurement unit are connected with pressure chamber unit respectively.
2nd, three-dimensional large power supersonic control bubbles silt consolidation test method（Abbreviation method）
This method comprises the following steps：
1. before formal test, saturation is carried out to high air-entry value pottery clay plates using pumping saturation, untill without bubble；
2. carrying out natural air drying to mud sample under the conditions of cool place, air free water is added in mud air-dry sample；
3. will add the mud sample after air free water be put into two-dimensional ultrasound wave transducer be used for be layered load soil sample, to every layer of tamping
Same number is to ensure the overall uniformity of soil sample, and the water surface is higher than soil sample top surface 1-2cm when loading every time, it is ensured that the soil sample of filling
For saturation soil sample；Meanwhile temperature control equipment is adjusted, loaded under the conditions of 50 DEG C, gas componant is free of in soil sample；
4. the dissolved air water of certain mass is prepared by liquid air-dissolving apparatus, then by dissolved air water by high pressure from saturating at the top of soil sample
Injected at water stone, existing air free water is then discharged by the high air-entry value pottery clay plates of soil sample bottom in such soil sample；Noted to soil sample
When entering dissolved air water, to keep the vertical pressure that soil sample is subject to equal with the pressure in liquid air-dissolving apparatus；
5. after soil sample internal void is completely filled with by dissolved air water, the vertical pressure of soil sample is slowly reduced step by step, until reaching
Untill the pressure of test requirements document；In the above-mentioned stabilization per stage pressure, by increasing micro vertical pressure in a short time, work as soil sample
When volume no longer changes, the total variation of soil sample volume is recorded, you can obtain under the conditions of every stage pressure bubble volume in soil sample；By
Bubble volume under the conditions of gradually recording per stage pressure, Inversion Calculation is carried out by the diffusion theory of classics, you can obtain bubble chi
Very little and concentration；
6. during formal test, applying different ultrasonic excitings to soil sample under certain vertical pressure, bubbles mud is studied
Ultrasonic consolidation effect；During experiment, device is measured by liquid volume the volume of soil sample bottom efflux is surveyed
It is fixed, in combination with the specimen deformation measurement of pressure volume controller, ultrasonic consolidation drainage effect is evaluated；Together
When, the data of miniature pore pressure gauge and micro pressure sensor to uniformly being laid in soil sample are analyzed, and study pore pressure
Evolution with ultrasonic activation with the time；Secondly, efflux is taken to carry out granularity and turbidity test, analysis at regular intervals
In efflux granularity and turbidity with the time Evolution；In addition, after laboratory test terminates every time, at diverse location in soil sample
The shear strength of mud is tested.
Compared with prior art, the present invention has following advantages and good effect：
1. longitudinal ultrasonic wave excitation is applied using vibration mode conversion hysteria high power altrasonic transducer, using open circles pillar piezoelectricity
Ceramic transducer applies two-dimensional ultrasound wave excitation, can carry out silt consolidation attribute testing under different ultrasonic exciting forms；
2. being provided with liquid air-dissolving apparatus, annular-heating circle and high air-entry value pottery clay plates in system, axial translation technology system is utilized
The standby mud soil sample for containing certain bubble feature, can carry out silt consolidation attribute testing under different Air Bubble Sizes and concentration conditions；
3. pressure volume controller is connect by the top aperture of stainless steel pressure room, can be used in while applying ultrasonic exciting pairs
Soil sample applies vertical consolidation pressure and measures specimen deformation, can meet silt consolidation attribute testing under different vertical pressures；
4. in order to improve precision, device is measured by liquid volume the volume of efflux is measured, in combination with pressure body
The specimen deformation measurement of plot controller, exact evaluation is carried out to ultrasonic consolidation drainage effect；
5. miniature pore pressure gauge and micro pressure sensor are uniformly laid at soil sample diverse location and different depth, can be same
When to soil sample Pore Pressure under ul-trasonic irradiation and vibration decay Evolution measure；
6. it is easy to the control operation of ultrasonic exciting and bubble, automation, which is surveyed, to be realized to ultrasonic attenuation and pore water pressure
Amount and collection, and surveyed data are accurate.
In a word, the present invention can meet to apply mud three-dimensional large power supersonic wave excitation, regulation Air Bubble Size and concentration, right
The needs for the experiment that consolidation deformation, pore pressure and ultrasonic energy decay etc. are accurately controlled and measured.
Brief description of the drawings
Fig. 1 is the block diagram of the system；
Fig. 2 is the structural representation of the system.
In figure：
10-three-dimensional ultrasonic test unit,
11-vertical One-Dimensional Ultrasonic ripple unit,
111-One-Dimensional Ultrasonic wave producer,
112-One-Dimensional Ultrasonic wave transducer；
113-One-Dimensional Ultrasonic ripple signal-transmitting cable；
12-radial direction two-dimensional ultrasonic unit,
121-two-dimensional ultrasound wave producer,
122-two-dimensional ultrasound wave transducer,
123-two-dimensional ultrasonic signal-transmitting cable；
20-bubbles soil sample test unit,
21-soil sample,
22-liquid air-dissolving apparatus,
23-permeable stone,
24-high air-entry value pottery clay plates,
25-annular-heating circle,
26-temperature control equipment,
27-wire；
30-pressure chamber unit,
31-stainless steel pressure room,
32-stainless steel top cover,
33-stainless steel plate,
The heat-insulated soft felt of 34-base of receiving,
35-pressure volume controller,
36-movable bolt,
37-water filling port bolt,
38-drainpipe；
40-measurement unit,
41-liquid volume measures device,
42-miniature pore pressure gauge,
43-micro pressure sensor,
44-data collecting instrument,
45-signal transmssion line；
A-valve.
Embodiment
Describe in detail with reference to the accompanying drawings and examples：
First, system
1st, it is overall
Such as Fig. 1,2, the system includes three-dimensional ultrasonic test unit 10, bubbles soil sample test list 20, the and of pressure chamber unit 30
Measurement unit 40；
Its position and annexation are：
Three-dimensional ultrasonic test unit 10, bubbles soil sample test unit 20 and measurement unit 40 connect with pressure chamber unit 30 respectively
Connect.
2nd, functional unit
1）Three-dimensional ultrasonic test unit 10
Three-dimensional ultrasonic test unit 10 is made up of vertical One-Dimensional Ultrasonic ripple unit 11 and radial direction two-dimensional ultrasonic unit 12；
（1）Vertical One-Dimensional Ultrasonic ripple unit 11 is by One-Dimensional Ultrasonic wave producer 111 and One-Dimensional Ultrasonic wave transducer 112 by one-dimensional
The front and rear connection composition of ultrasound signal transmission cable 113.
The side of One-Dimensional Ultrasonic wave transducer 112 is sealed by rubber ring and two-dimensional ultrasound wave transducer 122, and one-dimensional
Ultrasonic transducer 112 can be moved up and down freely in two-dimensional ultrasound wave transducer 122.
One-Dimensional Ultrasonic wave producer 111 converts voltage to the high-frequency ac to match with One-Dimensional Ultrasonic wave transducer 112
Electric signal；The high frequency electrical signal received is changed into ultrasonic wave by One-Dimensional Ultrasonic wave transducer 112；One-Dimensional Ultrasonic wave transducer
The ultrasonic wave load of 112 transmittings is applied from up to down by permeable stone 23 from the top of soil sample 21.
One-Dimensional Ultrasonic wave transducer 112 uses vibration mode conversion hysteria high power altrasonic transducer, longitudinal direction in the transducer
Sandwich piezoelectric ceramic transducer produces extensional vibration, then drives coupled metal cylinder radiator to produce vibration；One
The size for tieing up ultrasonic transducer 112 is overall diameter 80cm, thickness 2cm.
（2）Radial direction two-dimensional ultrasonic unit 12 is passed through by two-dimensional ultrasound wave producer 121 and two-dimensional ultrasound wave transducer 122
The front and rear connection composition of two-dimensional ultrasonic signal-transmitting cable 123；
Two-dimensional ultrasound wave transducer 122 use open circles pillar piezoelectric ceramic transducer, the transducer by piezo ceramic element with
Hardware forms in radial compound, and ultrasonic wave load serves as radiating surface to the internal radiation of soil sample 21, inner cylinder face, can regard as
It is a sound wave focalizer.
The design principle of two-dimensional ultrasound wave transducer 122 is as follows：First, the inside and outside metal circular tube of transducer must use not
Same metal material, transducer inner metal cylinder is generally light metal, and outside metal cylinder should select heavy metal；Second,
The tubular electrode material of round metal should be beryllium-bronze material, and the number of piezoelectric ceramic circular tube should be even number, so can be fine
Ground solves ground connection and the Insulation Problems of piezoelectric ceramic circular tube.
The size of two-dimensional ultrasound wave transducer 122 is：Interior diameter 80cm, height 123cm, wall thickness 1.5cm, in the transducer
Inside filling soil sample.
In addition, One-Dimensional Ultrasonic wave producer 111 and two-dimensional ultrasound wave producer 121 are all surpassed using same type of auto-excitation type
Sonic generator, the type generator power output 0-20kW, output frequency 10-35kHz.
2）Bubbles soil sample test unit 20
Bubbles soil sample test unit 20 is by soil sample 21, liquid air-dissolving apparatus 22, permeable stone 23, high air-entry value pottery clay plates 24, ring
Shape heating collar 25 and temperature control equipment 26 and wire 27 form；
Its position and annexation are：
In pressure chamber unit 30, from top to bottom, stainless steel plate 33, high air-entry value pottery clay plates 24, soil sample 21, the and of permeable stone 23
One-Dimensional Ultrasonic wave transducer 112 is sequentially connected；
Liquid air-dissolving apparatus 22 is by pipeline connecting valve A and through the central small hole of One-Dimensional Ultrasonic wave transducer 112, with soil sample
The permeable stone 23 of 21 tops connects；
Annular-heating circle 25 is set between stainless steel pressure room 31 and two-dimensional ultrasound wave transducer 122, and annular-heating circle 25 leads to
Wire 27 is crossed with temperature control equipment 26 to be connected.
Soil sample 21 is in cylinder, and size is：Diameter 80cm, height 120cm；The soil sample 21 of this size range can be preferable
The rule of ground research ultrasonic exciting silt consolidation deformation；
Annular-heating circle 25 uses peak power to be generated heat for 3000W resistance-type and enclosed；
Temperature control equipment 26 is usual means, for adjusting the temperature in the manufacturing process of soil sample 21 in stainless steel pressure room 31.
The working mechanism of bubbles soil sample test unit 20：
Liquid air-dissolving apparatus 22 increases the confined pressure of water to improve by injecting pressure-air in the water to certain mass repeatedly
Solubility of the air in water, then dissolved air water is injected in soil sample 21 by permeable stone 23；Meanwhile the height of the bottom of soil sample 21 enters
During gas value 24 saturation of pottery clay plates, because the high surface micropore of air-entry value pottery clay plates 24 forms shrink film, this shrink film enters height
The numerous apertures connection of the surface of gas value pottery clay plates 24 and produce surface tension, so as to prevent air by high air-entry value pottery clay plates 24,
But moisture can discharge；The air-entry value of high air-entry value pottery clay plates 24 is 1500kPa, contains one so as to be prepared using axial translation technology
Determine the soil sample of bubble feature；When needing to bear more hyperbar, air-entry value can be used to be up to 10MPa special fibre film.
3）Pressure chamber unit 30
Pressure chamber unit 30 includes stainless steel pressure room 31, stainless steel top cover 32, stainless steel plate 33, the heat-insulated soft and of felt 34 of base of receiving
Pressure volume controller 35, movable bolt 36, water filling port bolt 37 and drainpipe 38；
Its position and annexation are：
Stainless steel top cover 32, stainless steel pressure room 31 and stainless steel plate 33 are vertically connected with as an axial symmetry by movable bolt 36
Container, pasted in container outer wall and receive the heat-insulated soft felt 34 of base for two layers, water filling port bolt 37 is provided with stainless steel top cover 32,
Drainpipe 38 is provided with stainless steel plate 33.
Container interior diameter 83.5cm, inner height 160cm, wall thickness 2cm；
Aperture connection pressure volume controller 35 is provided with the top of stainless steel top cover 32, for applying vertical consolidation to soil sample 21
Pressure and measurement specimen deformation, pressure volume controller 35 select GDS geotechnical centrifuge model instrument pressure volume controllers.
The heat-insulated soft felt 34 of base of receiving is one of current soft insulating product most efficient on the market.
4）Measurement unit 40
Measurement unit 40 measures device 41, miniature pore pressure gauge 42, micro pressure sensor 43 and data by liquid volume
Acquisition Instrument 44 forms；
Liquid volume measures device 41 and connected by drainpipe 38 with pressure chamber unit 30, measures the change of its liquid volume；
Miniature pore pressure gauge 42 and the micro pressure sensing being connected respectively with data collecting instrument 44 by signal transmssion line 45
Device 43 is respectively arranged in soil sample 21, measures pore water pressure and ultrasonic activation.
3rd, operation principle
1）Layering loads soil sample 21 in two-dimensional ultrasound wave transducer 122, and the water surface is higher than the top surface 1- of soil sample 21 when loading every time
2cm, it is ensured that the soil sample 21 of filling is saturation soil sample；Meanwhile in higher temperature（50℃）Lower filling soil sample 21, can so be reduced
Air enters soil sample 21 when loading；The soil sample 21 being prepared is fully saturated soil sample, and in soil sample 21 without gas into
Point；After soil sample 21 has loaded, stainless steel top cover 32 and associated pipe are installed, regulation pressure volume controller 35 is to soil sample
21 apply vertical pressure.
2）The dissolved air water of certain mass is prepared by liquid air-dissolving apparatus 22, then by dissolved air water by high pressure from soil sample 21
Soil sample 21 is injected at the permeable stone 23 at top, existing air free water then passes through the high air-entry value of the bottom of soil sample 21 in such soil sample 21
Pottery clay plates 24 are discharged；The volume of injection dissolved air water will reach more than 10 times of the mesopore volume of soil sample 21, could be by soil sample 21
The air free water discharge of residual；When injecting dissolved air water to soil sample 21, the vertical pressure that soil sample 21 is subject to is kept to be filled with liquid air-dissolving
The pressure put in 22 is equal, is so avoided that in dissolved air water test error caused by gas release.
3）After the internal void of soil sample 21 is completely filled with by dissolved air water, the vertical pressure of soil sample 21 is slowly reduced step by step,
Untill the pressure of test requirements document is reached；When reducing vertical pressure step by step, the gas transition being dissolved in water in soil sample 21 is
Over-saturation state, at this moment initially form bubble in soil sample 21；It is micro- by increasing in a short time in the above-mentioned stabilization per stage pressure
Vertical pressure is measured, when the volume of soil sample 21 no longer changes, records the total variation of the volume of soil sample 21, you can obtain every stage pressure bar
Bubble volume in soil sample 21 under part；Bubble volume under the conditions of gradually record is per stage pressure, carried out by the diffusion theory of classics
Inversion Calculation, you can obtain bubble size and concentration；In bubble volume in determining soil sample, the application time of vertical pressure is necessary
It is very short, avoid bubble during applying from re-dissolving into water.
4）Vertical One-Dimensional Ultrasonic wave excitation is applied to soil sample 21 using One-Dimensional Ultrasonic wave transducer 112；Pass through two-dimensional ultrasound
Wave transducer 122 applies radial direction two-dimensional ultrasound wave excitation to soil sample 21；Under high-power ultrasonics effect, mud pore interior stream
Small complex in body is activated, and ultrasonic activation constantly quickly alternately causes cavitation bubble nuclear disruption, is produced in very short time
Localized hyperthermia and high pressure, and the shock wave and jet of accompanied by intense, so as to cause moisture and fine grain travel motion in mud；
Apply vertical consolidation pressure to soil sample 21 using pressure volume controller 35 simultaneously and measure specimen deformation, the system can be to solid
Knot deformation, pore pressure and ultrasonic energy decay etc. are tested.
2nd, method
1. whether saturation is related to experiment success or failure for high air-entry value pottery clay plates 24 and its pipeline, therefore, before formal test, using taking out
Gas saturation carries out saturation to high air-entry value pottery clay plates 24, and the saturation of test system pipeline is then in advance to pipeline using peristaltic pump
Middle injection air free water is rinsed, untill without bubble；
2. carrying out natural air drying to mud under the conditions of cool place, according to test requirements document, the air free water of certain mass is added into mud
In air-dry sample；
3. the mud sample after water will be added to be layered filling soil sample 21 in two-dimensional ultrasound wave transducer 122, it is identical to every layer of tamping
Number is to ensure the overall uniformity of soil sample 21, and the water surface is higher than the top surface 1-2cm of soil sample 21 when loading every time, it is ensured that the 21 of filling are
Saturation soil sample；Meanwhile temperature control equipment 26 is adjusted, soil sample 21 is loaded at relatively high temperatures, can so be reduced air and filled out
Enter soil sample 21 during dress；Mud composition can be had an impact however, temperature is too high, tentatively draft and being loaded under the conditions of 50 DEG C；Cause
This, just can prepare the saturation soil sample 21 of certain density, and gas componant is free of in soil sample 21 by above-mentioned steps；
4. the dissolved air water of certain mass is prepared by liquid air-dissolving apparatus 22, then by dissolved air water by high pressure from the top of soil sample 21
Injected at portion's permeable stone 23, existing air free water then passes through the high row of air-entry value pottery clay plates 24 of the bottom of soil sample 21 in such soil sample 21
Go out；Related data is consulted, the volume of the dissolved air water of injection will reach more than 10 times of the mesopore volume of soil sample 21, could be by soil sample
The air free water discharge of middle residual, this process need the long period；Meanwhile by adjusting pressure volume controller 35 to soil sample 21
Apply vertical pressure；
When injecting dissolved air water to soil sample, the vertical pressure that soil sample 21 is subject to and the pressure phase in liquid air-dissolving apparatus 22 are kept
Deng being so avoided that in dissolved air water test error caused by gas release；
5. after the internal void of soil sample 21 is completely filled with by dissolved air water, the vertical pressure of soil sample 21 is slowly reduced step by step, until
Untill the pressure for reaching test requirements document；When reducing vertical pressure step by step, the gas transition being dissolved in water in soil sample 21 is super full
And state, at this moment initially form bubble in soil sample；It is micro vertical by increasing in a short time in the above-mentioned stabilization per stage pressure
Pressure, when the volume of soil sample 21 no longer changes, record the total variation of the volume of soil sample 21, you can obtain soil under the conditions of every stage pressure
Bubble volume in sample；Bubble volume under the conditions of gradually record is per stage pressure, Inversion Calculation is carried out by the diffusion theory of classics,
Bubble size and concentration can be obtained；
In bubble volume in determining soil sample, the application time of vertical pressure must be very short, avoids bubble weight during applying
Newly it is dissolved into water.
6. during formal test, applying different ultrasonic excitings to soil sample under certain vertical pressure, bubbles are studied
The ultrasonic consolidation effect of mud；During experiment, body of the device 41 to the bottom efflux of soil sample 21 is measured by liquid volume
Product is measured, and in combination with the specimen deformation measurement of pressure volume controller 35, ultrasonic consolidation drainage effect is entered
Row evaluation；Meanwhile the data of the miniature pore pressure gauge 42 to uniformly being laid in soil sample and micro pressure sensor 43 are carried out
Analysis, study the Evolution of pore pressure and ultrasonic activation with the time；Secondly, take at regular intervals efflux carry out granularity and
Turbidity is tested, and analyzes in efflux granularity and turbidity with the Evolution of time；In addition, after laboratory test terminates every time, to soil
The shear strength of mud is tested at diverse location in sample.
Claims (6)
- A kind of 1. three-dimensional large power supersonic control bubbles silt consolidation pilot system, it is characterised in that：Including three-dimensional ultrasonic test unit（10）, bubbles soil sample test unit（20）, pressure chamber unit（30）It is single with measuring Member（40）；Its position and annexation are：Three-dimensional ultrasonic test unit（10）, bubbles soil sample test unit（20）And measurement unit（40）It is single with balancing gate pit respectively Member（30）Connection.
- 2. a kind of three-dimensional large power supersonic control bubbles silt consolidation pilot system as described in claim 1, its feature exist In：Described three-dimensional ultrasonic test unit（10）By vertical One-Dimensional Ultrasonic ripple unit（11）With radial direction two-dimensional ultrasonic unit （12）Composition；Vertical One-Dimensional Ultrasonic ripple unit（11）By One-Dimensional Ultrasonic wave producer（111）, One-Dimensional Ultrasonic wave transducer（112）Pass through one Tie up ultrasound signal transmission cable（113）Front and rear connection composition；Radial direction two-dimensional ultrasonic unit（12）By two-dimensional ultrasound wave producer（121）, two-dimensional ultrasound wave transducer（122）Pass through two Tie up ultrasound signal transmission cable（123）Front and rear connection composition.
- 3. a kind of three-dimensional large power supersonic control bubbles silt consolidation pilot system as described in claim 1, its feature exist In：Described bubbles soil sample test unit（20）By soil sample（21）, liquid air-dissolving apparatus（22）, permeable stone（23）, high air inlet It is worth pottery clay plates（24）, annular-heating circle（25）, temperature control equipment（26）And wire（27）Composition；In pressure chamber unit（30）It is interior, from top to bottom, stainless steel plate（33）, high air-entry value pottery clay plates（24）, soil sample（21）, thoroughly Water stone（23）With One-Dimensional Ultrasonic wave transducer（112）It is sequentially connected；Liquid air-dissolving apparatus（22）Pass through pipeline connecting valve（A）And pass through One-Dimensional Ultrasonic wave transducer（112）Central small hole, with Soil sample（21）The permeable stone of top（23）Connection；In stainless steel pressure room（31）With two-dimensional ultrasound wave transducer（122）Between set annular-heating circle（25）, annular-heating Circle（25）Pass through wire（27）With temperature control equipment（26）It is connected.
- 4. a kind of three-dimensional large power supersonic control bubbles silt consolidation pilot system as described in claim 1, its feature exist In：Described pressure chamber unit（30）Including stainless steel pressure room（31）, stainless steel top cover（32）, stainless steel plate（33）, receive The heat-insulated soft felt of base（34）, pressure volume controller（35）, movable bolt（36）, water filling port bolt（37）And drainpipe（38）；Its position and annexation are：Stainless steel top cover（32）, stainless steel pressure room（31）And stainless steel plate（33）Pass through movable bolt（36）Be vertically connected with for One axisymmetric container, pasted in container outer wall and receive the heat-insulated soft felt of base for two layers（34）, in stainless steel top cover（32）On be provided with note Mouth of a river bolt（37）, in stainless steel plate（33）On be provided with drainpipe（38）；Container interior diameter 83.5cm, inner height 160cm, wall thickness 2cm；In stainless steel top cover（32）Top be provided with aperture connection pressure volume controller（35）.
- 5. a kind of three-dimensional large power supersonic control bubbles silt consolidation pilot system as described in claim 1, its feature exist In：Described measurement unit（40）Device is measured by liquid volume（41）, miniature pore pressure gauge（42）, micro pressure pass Sensor（43）And data collecting instrument（44）Composition；Liquid volume measures device（41）Pass through drainpipe（38）With pressure chamber unit（30）Connection, measure the change of its liquid volume Change；Pass through signal transmssion line（45）Respectively with data collecting instrument（44）The miniature pore pressure gauge of connection（42）With miniature pressure Force snesor（43）It is respectively arranged at soil sample（21）In diverse location, pore water pressure and ultrasonic activation are measured.
- 6. the test method of the pilot system based on claim 1-5, it is characterised in that comprise the following steps：1. before formal test, using pumping saturation to high air-entry value pottery clay plates（24）Saturation is carried out, until being without bubble Only；2. carrying out natural air drying to mud sample under the conditions of cool place, air free water is added in mud air-dry sample；3. it is put into two-dimensional ultrasound wave transducer by the mud sample after air free water is added（122）Soil sample is loaded for being layered（21）, Same number is consolidated to every layer to ensure soil sample（21）Overall uniformity, the water surface is higher than soil sample when loading every time（21）Top surface 1- 2cm, it is ensured that the soil sample of filling（21）For saturation soil sample；Meanwhile adjust temperature control equipment（26）, loaded under the conditions of 50 DEG C, Soil sample（21）In be free of gas componant；4. pass through liquid air-dissolving apparatus（22）Prepare the dissolved air water of certain mass, then by dissolved air water by high pressure from soil sample（21） The permeable stone at top（23）Place's injection, such soil sample（21）In existing air free water then pass through soil sample（21）The high air-entry value of bottom Pottery clay plates（24）Discharge；To soil sample（21）When injecting dissolved air water, soil sample is kept（21）The vertical pressure and liquid air-dissolving being subject to Device（22）Interior pressure is equal；5. work as soil sample（21）After internal void is completely filled with by dissolved air water, soil sample is slowly reduced step by step（21）Vertical pressure, Untill the pressure of test requirements document is reached；In the above-mentioned stabilization per stage pressure, by increasing micro vertical pressure in a short time Power, work as soil sample（21）When volume no longer changes, soil sample is recorded（21）The total variation of volume, you can under the conditions of obtaining every stage pressure Bubble volume in soil sample；Bubble volume under the conditions of gradually record is per stage pressure, inverting meter is carried out by the diffusion theory of classics Calculate, you can obtain bubble size and concentration；6. during formal test, to soil sample under certain vertical pressure（21）Apply different ultrasonic excitings, study bubbles The ultrasonic consolidation effect of mud；During experiment, device is measured by liquid volume（41）To soil sample（21）Bottom efflux Volume be measured, in combination with pressure volume controller（35）Specimen deformation measurement, to ultrasonic consolidation draining Effect is evaluated；Meanwhile the miniature pore pressure gauge to uniformly being laid in soil sample（42）And micro pressure sensor（43） Data analyzed, study the Evolution of pore pressure and ultrasonic activation with the time；Secondly, efflux is taken at regular intervals Granularity and turbidity test are carried out, analyzes in efflux granularity and turbidity with the Evolution of time；In addition, each laboratory test knot Shu Hou, the shear strength of mud at diverse location in soil sample is tested.
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| CN110031400A (en) * | 2019-05-05 | 2019-07-19 | 中交疏浚技术装备国家工程研究中心有限公司 | For dredging the multi-function device of cutter tooth and the measurement of clay adhesion strength and cutter tooth optimization |
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| CN108267370A (en) * | 2018-01-31 | 2018-07-10 | 浙江大学 | A kind of one-dimensional cylinder test device and method for simulating the kinetic head boundary effect soil body |
| CN109725127A (en) * | 2019-01-11 | 2019-05-07 | 河海大学 | A kind of ultrasonic wave promotes the experimental rig of soft clay discharging consolidation |
| CN110031400A (en) * | 2019-05-05 | 2019-07-19 | 中交疏浚技术装备国家工程研究中心有限公司 | For dredging the multi-function device of cutter tooth and the measurement of clay adhesion strength and cutter tooth optimization |
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