CN104007051A - Ultrasonic control earth pillar pressure chamber system - Google Patents
Ultrasonic control earth pillar pressure chamber system Download PDFInfo
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- CN104007051A CN104007051A CN201410260204.9A CN201410260204A CN104007051A CN 104007051 A CN104007051 A CN 104007051A CN 201410260204 A CN201410260204 A CN 201410260204A CN 104007051 A CN104007051 A CN 104007051A
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Abstract
The invention discloses an ultrasonic control earth pillar pressure chamber system. The ultrasonic control earth pillar pressure chamber system comprises a pressure chamber, an earth pillar, an ultrasonic device, a liquid supply device and a liquid outlet device. The pressure chamber is provided with a cavity filled with water, and the earth pillar is arranged inside the cavity; the ultrasonic device comprises an ultrasonic generator, an ultrasonic transducer, an ultrasonic amplitude-change pole and an ultrasonic emission tool head, and the ultrasonic emission tool head extends into the cavity and makes contact with the top end of the earth pillar; the liquid supply device comprises a liquid inlet pipe, a liquid storage tank, a peristaltic pump and a flowmeter; the liquid outlet device comprises a turbidimeter and a liquid outlet pipe, the turbidimeter is connected to the liquid outlet pipe, and the liquid outlet pipe extends into the cavity and is connected with the bottom end of the earth pillar. The system can accurately measure the evolution situation of rubber concentration along with time, the ultrasonic attenuation situation, the temperature change situation and the earth pillar deformation situation in the process of ultrasonic load changes, earth pillar height changes and earth pillar confining pressure changes, and then research on rubber migration and deposition characteristic in porous media under the multi-factor coupling action is carried out.
Description
Technical field
The present invention relates to the earth pillar pressure chamber system that the ultrasound wave in environmental geotechnical is controlled, be used for measuring colloid migration and the deposition characteristics in porous medium under variation ultrasound wave load, confined pressure and earth pillar height condition.
Background technology
Along with China's economy and social high speed development, groundwater contamination is on the rise, and China's resident living and activity in production have been produced and had a strong impact on.Underground reservoir complex structure, groundwater velocity is slow, and groundwater contamination has the feature of difficult discovery and refractory reason.In underground environment, compose oxide, clay particle and the soil ulmin isocolloid deposited and make water-bearing media become three-phase medium by two-phase medium (fixing solid phase and mobile gas phase or liquid phase), that of increase is mobile solid phase (colloid).Underground pollution thing not only can transmit by liquids and gases, also can be adsorbed on colloid and moves with seepage flow.Secondly, grouting curtain technology is a kind of effective landfill site seepage prevention treatment measures.In injecting paste material, cement grout can be regarded cement granules as and be suspended in water, and cement granules stops up soil body hole, and then reduces the perviousness of the soil body, and the migration of the cement granules of follow-up injection is had a significant impact.Therefore, to the research of colloid Transport, can provide fundamental basis for the grouting water-tight measure of pollutant control, percolate migration and refuse landfill engineering, have very high using value.Soil-column test is the main method of carrying out colloid migration research, is the important means that obtains breakthrough curve.
In recent years, the needs that increase the engineering problems such as oil extraction, ultrasound wave change groundwater level and municipal solid wastes landfill due to ultrasound wave, become a crucial problem about the migration of colloid and the research of deposition characteristics in saturated porous media under the ultrasound wave load action changing.And conventional indoor soil-column test, can only consider the impact of the factors such as colloidal particle size, percolation flow velocity, pore character on colloid migration and deposition characteristics, and cannot adjust as required the height of earth pillar, also cannot apply ultrasound wave load and confined pressure to earth pillar, also, can not measure and be controlled at migration and the deposition characteristics of colloid in the earth pillar of differing heights under the effect of ultrasound wave load and confined pressure.
And, under the effect of ultrasound wave load, the variation of the temperature of earth pillar, seepage flow, pore character and earth pillar volume, colloid in porous medium is accelerated to migrate attribute very important impact, and conventional soil-column test device cannot meet this demand.
Summary of the invention
The invention provides the earth pillar pressure chamber system that ultrasound wave is controlled, it has overcome the existing deficiency of background technology.The technical solution adopted for the present invention to solve the technical problems is: the earth pillar pressure chamber system that ultrasound wave is controlled, is characterized in that: it comprises:
Pressure chamber, it is provided with water-filled cavity (110);
The earth pillar of periphery parcel elastic waterproof layer (520), it is placed in cavity (110);
For earth pillar is applied to ultrasound wave so that the vibrative ultrasonic unit of earth pillar, it comprises connected successively ultrasonic generator (210), ultrasonic transducer (220), ultrasonic variable amplitude bar (230) and ultrasound wave emission tool head (240), and ultrasound wave emission tool head (240) stretches in cavity (110) and contacts with the top ends of earth pillar;
For earth pillar being provided to the liquid feed device of the liquid that is mixed with colloid, it comprises liquid reserve tank (310), feed tube (320), peristaltic pump (330) and flowmeter (340), it is upper that liquid reserve tank (310), peristaltic pump (330) and flowmeter (340) are installed in feed tube (320) successively, and feed tube (320) stretches in cavity (110) and is connected with the top ends sidewall of earth pillar;
Liquid discharge device, it comprises for measuring nephelometer (410) and the drain pipe (420) of the liquid colloid turbidity flowing out from earth pillar bottom, it is upper that nephelometer (410) is installed in drain pipe (420), and drain pipe (420) stretches in cavity (110) and is connected with the bottom of earth pillar.
Among one preferred embodiment: the width of described earth pillar is less than the width of cavity (110), earth pillar be highly less than cavity (110) height.
Among one preferred embodiment: the top ends of described pressure chamber is provided with projection (120), projection (120) offers and longitudinally runs through the inside and outside through hole (121) of cavity (110), and ultrasound wave emission tool head (240) is stretched in cavity (110) and coordinated with through hole (121) phase air-tight movable by through hole (121).
Among one preferred embodiment: described earth pillar comprises columned soil sample (510), described pressure chamber convexes with flange (130) in cavity (110), described soil sample (510) is positioned on flange (130), described elastic waterproof layer (520) extends to flange (130) periphery, separately be provided with for the fixing flexible fastening piece of elastic waterproof layer (520), flexible fastening piece is tightly placed on flange (130) and earth pillar top ends periphery.
Among one preferred embodiment: described earth pillar also comprises permeable part (530) and lower permeable part (540), upper permeable part (530) comprises the screen cloth part of sealing and affixed sealing, screen cloth part is placed in the top of soil sample (510), elastic waterproof layer (520) extends upward week outside supreme permeable part (530), and feed tube (320) passes elastic waterproof layer (520) and is connected with upper permeable part (530) sidewall; Lower permeable part (540) contact between soil sample (510) and flange (130) and end face be mesh structure, drain pipe (420) passes flange (130) and is connected with lower permeable part (540) bottom surface, and ultrasound wave emission tool head (240) contacts with the sealing of upper permeable part (530).
Among one preferred embodiment: the thickness of described upper permeable part (530) is that the aperture of 4-6 millimeter and screen cloth part is 0.4-0.6 millimeter, the thickness of described lower permeable part (540) is that the aperture of 4-6 millimeter and screen cloth is 0.4-0.6 millimeter.
Among one preferred embodiment: also comprise vibration detecting device, it comprises vibration probe (610) for surveying earth pillar vibrating bottom situation and for earth pillar vibrating bottom situation being converted to the vialog (620) of vibration data, vibration probe (610) passes cavity (110) and stretches into the bottom of earth pillar, and vialog (620) is connected with vibration probe (610).
Among one preferred embodiment: also comprise temperature measuring equipment, it comprises for detection of the temperature-sensing element (710) of the interior temperature of cavity (110) with for showing the temperature indicator (720) of temperature-sensing element (710) measured temperature, temperature-sensing element (710) stretches in cavity (110), and temperature indicator (720) is connected with temperature-sensing element (710).
Among one preferred embodiment: also comprise can exert pressure to cavity (110), pressure measurement and the confined pressure that can measure the volume change of the interior water of cavity (110) apply and measuring equipment (800), separately be provided with pressure connection tube (810), two ends of pressure connection tube (810) connect respectively cavity (110) and confined pressure applies and measuring equipment (800).
Among one preferred embodiment: described pressure chamber comprises body (140), top cover (150) and the bottom (160) of tubular, the double-decker that the perisporium of body (140) is hollow, separately be provided with and receive the heat insulation soft felt of base (141), this is received the heat insulation soft felt of base (141) and is installed in the perisporium of body (140); The top of body (140) is provided with along limit (142), the bottom of body (140) is provided with lower along limit (143), top cover (150) lid be connected on body (140) top and and above along between limit (142), by bolt (170), fix, bottom (160) lid is connected on the bottom of body (140) and with lower (143) fix by bolt (170) along limit, the cavity (110) described in surrounding between body (140), top cover (150) and bottom (160).
Among one preferred embodiment: described pressure chamber also comprises upper ceramic wafer (180) and the lower ceramic wafer (190) with water proof and effect of heat insulation, upper ceramic wafer (180) contact is between top cover (150) and the top of body (140), and lower ceramic wafer (190) contact is between bottom (160) and the bottom of body (140).
The technical program is compared with background technology, and its tool has the following advantages:
1. in cavity, be full of water, earth pillar is placed in cavity, it by ultrasonic generator, by voltage transitions, is the high-frequency ac electric signal matching with ultrasonic transducer, ultrasonic transducer changes into ultrasonic vibration by the high frequency electrical signal receiving, ultrasonic vibration amplitude is after ultrasonic variable amplitude bar amplifies, again by the head transmission of ultrasound wave emission tool and be applied to earth pillar top ends, earth pillar is vibrated under hyperacoustic effect, the mixed liquor of colloid and deionized water is housed in liquid reserve tank, liquid in liquid reserve tank is entered the top ends of earth pillar and in earth pillar, is moved and deposit by feed tube, the liquid that earth pillar bottom is oozed out flows out from drain pipe, nephelometer is measured colloid turbidity the liquid oozing out from earth pillar bottom, utilize the relation of colloid turbidity and concentration that turbidity is converted to colloid concentration, can analyse in depth colloid concentration in liquid body exudate.This system can be controlled hyperacoustic frequency in 20-200KHZ scope, can meet the requirement of soil-column test under ul-trasonic irradiation.This system energy Accurate Measurement is colloid concentration evolution situation, hyperacoustic attenuation, temperature variations and earth pillar deformation in time in ultrasound wave loads change, earth pillar height change and earth pillar confined pressure change procedure, and then colloid migration and deposition characteristics in porous medium under multifactor coupling are studied.
Earth pillar be highly less than cavity height, the width of earth pillar is less than the width of cavity, makes this pressure chamber can meet the test needs of the earth pillar of differing heights, earth pillar height all can adopt this pressure chamber to test in 20-80 cm range.
3. ultrasound wave emission tool head coordinates with through hole phase air-tight movable, make ultrasound wave emission tool head be positioned at the adjustable in length of cavity, and between the earth pillar top ends of ultrasound wave emission tool head and differing heights, contact, facilitate the soil-column test of differing heights.
4. earth pillar comprises soil sample and elastic waterproof layer, this water barrier can prevent that the water in cavity from infiltrating soil sample, flexible fastening piece is tightly placed on the elastic waterproof layer periphery at earth pillar top ends and flange place, pressure chamber, for elastic waterproof layer is fixed, further strengthens waterproof effect.
5. go up the screen cloth part that permeable part comprises sealing and affixed sealing, sealing infiltrates from soil sample top for preventing the water in cavity, and screen cloth part guarantees that the liquid in liquid reserve tank can flow into soil sample top uniformly.The mesh size of lower permeable part is less than the minimum grain size of porous medium particle, except the liquid energy uniform-flow that makes to ooze out from soil sample bottom goes out soil sample, can also guarantee that porous medium particle does not run off with current, thereby avoid seepage flow that earth pillar inner structure is produced and destroyed.
6. the thickness of going up permeable part and lower permeable part is 4-6 millimeter, can prevent that colloid from depositing in permeable part, reduces the residence time of colloid in permeable part; The aperture of screen cloth part and mesh structure is 0.4-0.6 millimeter, makes colloid and seepage flow pass through better effects if.And ultrasound wave emission tool head contacts with the sealing of upper permeable part, can to greatest extent ultrasound wave be passed to earth pillar, and test findings is more accurate.
7. vibration probe is used for surveying earth pillar vibrating bottom situation, and vialog is for being converted to vibration data by earth pillar vibrating bottom situation, and this vibration detecting device can be measured earth pillar to hyperacoustic attenuation, the testing requirements of the ultrasonic attenuation data of satisfying the demand.
8. because being subject to hyperacoustic effect, earth pillar vibrates, earth pillar can produce heat and be released in cavity in vibration processes, temperature-sensing element is for detection of the temperature in cavity and show by temperature indicator, makes this temperature measuring equipment can detect the temperature variation of earth pillar under different ul-trasonic irradiation forms.
Confined pressure apply with measuring equipment can exert pressure to cavity, pressure measurement and can measure the volume change of water in cavity, this confined pressure applies with measuring equipment can apply confined pressure to earth pillar, and by measuring the volume change of water in cavity and then the deflection of measurement earth pillar.
10. peristaltic pump is used for by the liquid suction in liquid reserve tank, to earth pillar, having advantages of the high and low shearing force of pollution-free, precision, good airproof performance; Flowmeter can be measured the flow of liquid unit time, and the adjustable liquid flow velocity of the valve in flowmeter.
11. receive the heat insulation soft felt of base is installed in the perisporium of body, and the heat insulation soft felt of the base of receiving coefficient of heat conductivity is at normal temperatures lower than static air, is one of the most efficient insulating product on the market, guarantees the data accuracy of temperature measuring equipment.And between bottom and body, be bolted between top cover and body, can change at any time the earth pillar of differing heights.
On 12., ceramic wafer and lower ceramic wafer have good water proof and effect of heat insulation, and the data accuracy of assurance temperature measuring equipment and confined pressure apply the data accuracy with measuring equipment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 has illustrated the overall schematic of the earth pillar pressure chamber system that the ultrasound wave of a preferred embodiment controls.
Embodiment
Please refer to Fig. 1, one preferred embodiment of the earth pillar pressure chamber system that ultrasound wave is controlled, the earth pillar pressure chamber system that described ultrasound wave is controlled, it comprises that pressure chamber, earth pillar, ultrasonic unit, liquid feed device, liquid discharge device, vibration detecting device, temperature measuring equipment and confined pressure apply and measuring equipment 800.
Pressure chamber, it is provided with water-filled cavity 110.
In the present embodiment, described pressure chamber comprises body 140, top cover 150 and the bottom 160 of tubular, and the double-decker that the perisporium of body 140 is hollow is separately provided with and receives the heat insulation soft felt 141 of base, and this is received the heat insulation soft felt 141 of base and is installed in the perisporium of body 140; The top of body 140 is provided with along limit 142, the bottom of body 140 is provided with lower along limit 143, top cover 150 lid be connected on body 140 top and and above along between limit 142, by bolt 170, fix, bottom 160 lid is connected on the bottom of body 140 and along limit, 143 by bolt 170, fixes the cavity 110 described in surrounding between body 140, top cover 150 and bottom 160 with lower.In the present embodiment, this cavity 110 height can be set to 100 centimetres, and the radius of cavity is 20 centimetres, and all wall thickness of body are 3 centimetres.
In the present embodiment, described pressure chamber also comprises upper ceramic wafer 180 and the lower ceramic wafer 190 with water proof and effect of heat insulation, upper ceramic wafer 180 contacts are between top cover 150 and the top of body 140, and lower ceramic wafer 190 contacts are between bottom 160 and the bottom of body 140.
In the present embodiment, the bottom 160 of described pressure chamber convexes with flange 130 in cavity 110, and this flange 130 is cylindric.
In the present embodiment, the top ends of described pressure chamber is provided with projection 120, and projection 120 offers and longitudinally runs through the inside and outside through hole 121 of cavity 110.
Described earth pillar periphery parcel elastic waterproof layer 520, it is placed in cavity 110.
In the present embodiment, the width of described earth pillar is less than the width of cavity 110, earth pillar be highly less than cavity 110 height.In the present embodiment, the diameter of earth pillar can be 7 centimetres, and its height can be selected between 20-80 centimetre.
In the present embodiment, described earth pillar comprises the soil sample 510 of column, described soil sample 510 is positioned on the flange 130 of bottom, described elastic waterproof layer 520 extends to flange 130 peripheries, separately be provided with for the fixing flexible fastening piece of elastic waterproof layer 520, flexible fastening piece is tightly placed on elastic waterproof layer 520 peripheries at earth pillar top ends and flange place, pressure chamber.In the present embodiment, elastic waterproof layer 520 can adopt rubber membrane, and flexible fastening piece can adopt rubber band.
In the present embodiment, described earth pillar also comprises permeable part 530 and lower permeable part 540.
Upper permeable part 530 comprises the screen cloth part of sealing and affixed sealing, screen cloth part is placed in the top of soil sample 510, elastic waterproof layer 520 extends upward week outside supreme permeable part 530, and feed tube 320 passes elastic waterproof layer 520 and is connected with upper permeable part 530 sides; In the present embodiment, upper permeable part 530 is special stainless steel permeable part.The thickness of described upper permeable part 530 is that the aperture of 4-6 millimeter and screen cloth part is 0.4-0.6 millimeter.Best, the thickness of upper permeable part 530 is 5 millimeters, and the aperture of screen cloth part is 0.5 millimeter.
Lower permeable part 540 contacts are between soil sample 510 and flange 130 and be mesh structure, and drain pipe 420 is through flange 130 and be connected with lower permeable part 540.In the present embodiment, lower permeable part 540 is special stainless steel permeable part.The thickness of described lower permeable part 540 is that the aperture of 4-6 millimeter and screen cloth is 0.4-0.6 millimeter.Best, the thickness of lower permeable part 540 is 5 millimeters, and the aperture of screen cloth is 0.5 millimeter.
Described ultrasonic unit is for applying ultrasound wave to earth pillar so that earth pillar produces vibration, and it comprises connected successively ultrasonic generator 210, ultrasonic transducer 220, ultrasonic variable amplitude bar 230 and ultrasound wave emission tool head 240.
In the present embodiment, cavity 110 is stretched out in one end of ultrasound wave emission tool head 240, the other end of ultrasound wave emission tool head 240 is stretched in cavity 110 and is coordinated with through hole 121 phase air-tight movables by through hole 121, and one end of stretching into cavity 110 of ultrasound wave emission tool head 240 contacts with the sealing of upper permeable part 530, ultrasound wave emission tool head is positioned at the adjustable in length of cavity, facilitates the soil-column test of differing heights.
Described liquid feed device is for providing to earth pillar the liquid that is mixed with colloid, and it comprises liquid reserve tank 310 and feed tube 320, and one end of feed tube 320 connects liquid reserve tank 310, and the other end of feed tube 320 stretches in cavity 110 and is connected with the top ends of earth pillar.The mixed liquor of colloid and deionized water is housed in liquid reserve tank 310, and colloid is the colloidal solid that particle diameter is less than 1 micron.
In the present embodiment, described liquid feed device also comprise for by the liquid suction in liquid reserve tank 310 to the peristaltic pump 330 in earth pillar with for measuring the flowmeter 340 of fluid flow, peristaltic pump 330 and flowmeter 340 are all installed on feed tube 320, and peristaltic pump 330 is between liquid reserve tank 310 and flowmeter 340.Peristaltic pump is used for the liquid suction in liquid reserve tank, to earth pillar, providing the current of constant flow rate; Flowmeter can be measured the flow of liquid unit time, and the adjustable liquid flow velocity of the valve in flowmeter.
Described liquid discharge device, it comprises that nephelometer 410 is installed on drain pipe 420 for measuring nephelometer 410 and the drain pipe 420 of the liquid colloid turbidity oozing out from earth pillar bottom, drain pipe 420 stretches in cavity 110 and is connected with the bottom of earth pillar.
Described vibration detecting device, it comprises for surveying the vibration probe 610 of earth pillar vibrating bottom situation and for earth pillar vibrating bottom situation being converted to the vialog 620 of vibration data, vibration probe 610 passes cavity 110 and stretches into the bottom of earth pillar, and vialog 620 is connected with vibration probe 610.
Described temperature measuring equipment, it comprises that temperature-sensing element 710 stretches in cavity 110 for detection of the temperature-sensing element 710 of cavity 110 interior temperature with for showing the temperature indicator 720 of temperature-sensing element 710 measured temperatures, temperature indicator 720 is connected with temperature-sensing element 710.In the present embodiment, this temperature-sensing element 710 is electroheat pair.
Described confined pressure applies with measuring equipment 800 and can exert pressure to cavity 110, pressure measurement and can measure the volume change of cavity 110 interior water, separately be provided with pressure connection tube 810, two ends of pressure connection tube 810 connect respectively cavity 110 and confined pressure applies and measuring equipment 800.In the present embodiment, this confined pressure applies the confining pressure device that can adopt conventional geotechnological triaxial tester with measuring equipment 800, and earth pillar periphery confined pressure can be controlled at a certain constant confining pressure value within the scope of 0-2MPa.
Test specific operation process is as follows:
(1) selection of colloid
Select the ball-shaped silicon micro powder of artificial preparation to test, silicon powder is a kind of nontoxic, tasteless, free of contamination Inorganic Non-metallic Materials, and it possesses the characteristics such as temperature tolerance, acid-alkali-corrosive-resisting, stable chemical performance, hardness be large.Select the monodisperse spherical silicon powder of 5 kinds of narrow diameter distributions, the meta particle diameter of 5 kinds of silicon powders is respectively: 0.05 μ m, 0.1 μ m, 0.5 μ m, 1 μ m, these 5 kinds of silicon powders can be buied on market.
(2) preparation of soil sample
Porous medium is selected the silica sand (particle diameter is 1-4mm) after pickling, and the oxides such as the iron, aluminium of quartz sand surface have been removed in pickling, can be good at the interference of despumation.In special sample preparation device, soil sample is loaded in layering, and while loading, the water surface, higher than sample end face 1-2cm, can guarantee that the earth pillar of loading is saturated earth pillar so at every turn.Meanwhile, to the identical number of times of every layer of tamping to guarantee the homogeneity of earth pillar integral body.After earth pillar makes, sample preparation device is taken out.Because the mineralogical composition of selected silica sand is known, the physics and chemistry character of prepared like this earth pillar is just very clear.Therefore, experimental rules expection has reasonable comparability and representativeness.
(3) earth pillar is installed
Cut-off footpath is 7 centimetres, it is highly the soil sample of 50 centimetres, permeable part 540 under placing on flange 130, again soil sample is positioned on lower permeable part 540, upper permeable part 530 is positioned over to the top of soil sample, again elastic waterproof layer 520 is enclosed within to soil sample, upper and lower permeable part and flange 130 peripheries, to guarantee that earth pillar is completely waterproof around;
Again top cover 150 and bottom, upper and lower ceramic wafer and body 140 are fixed;
Adjust height of ultrasound wave emission tool head, to guarantee that ultrasound wave emission tool head contacts with upper permeable part 530;
(4) official test
The ultrasonic frequency that controls ultrasonic transducer generation is 100KHZ, control confined pressure applies and makes earth pillar confined pressure with measuring equipment 800 is 1MPa, starting peristaltic pump 330 take and as 0.2mg/ml, particle diameter as the liquor pump of the colloid of 0.5 μ m, enter the top of earth pillar by being mixed with concentration in liquid reserve tank 310, adjust flowmeter 340 valve so that its flow control at 500ml/min, vibration probe 610 is surveyed earth pillar vibrating bottom situations and also by vialog 620, earth pillar vibrating bottom situation is converted to vibration data, and the ultrasonic vibration of earth pillar bottom is initial value 20%.Confined pressure applies the volume change of water in the cavity of surveying with measuring equipment 800, and be 200ml by the deflection that this volume change is converted into earth pillar, nephelometer is measured colloid turbidity the liquid oozing out from earth pillar bottom, utilize the relation of colloid turbidity and concentration that turbidity is converted to colloid concentration for normal distribution curve, concentration maximal value is 0.3mg/ml, records those data;
Change vibration parameters, confined pressure parameter, percolation flow velocity and colloid parameter, remeasure numerical value, and record those data;
By multi-group data, can analyse in depth colloid concentration in different ultrasound wave form earth pillar liquid body exudates.
(5) earth pillar sampling and testing
After each indoor soil-column test finishes, earth pillar is measured along the deformation behaviour of depth direction;
At certain depth, take out a certain amount of silica sand, analyze seepage flow and ul-trasonic irradiation and be still deposited on colloid in earth pillar with the Changing Pattern of the degree of depth later.For the test of colloid concentration in sampling, porous medium can be cleaned in the deionized water of certain volume to surperficial and then turbidity in water be tested without colloid, finally by the relation of colloid turbidity and concentration, obtain the concentration of colloid.
This system energy Accurate Measurement earth pillar in ultrasound wave loads change, earth pillar confined pressure change procedure is analyzed hyperacoustic attenuation, temperature variations and earth pillar deformation, and then colloid migration and deposition characteristics in porous medium are studied.
Above are only the specific embodiment of the present invention, therefore can not limit according to this scope of the invention process, the equivalence done according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (11)
1. the earth pillar pressure chamber system that ultrasound wave is controlled, is characterized in that: it comprises:
Pressure chamber, it is provided with water-filled cavity (110);
The earth pillar of periphery parcel elastic waterproof layer (520), it is placed in cavity (110);
For earth pillar is applied to ultrasound wave so that the vibrative ultrasonic unit of earth pillar, it comprises connected successively ultrasonic generator (210), ultrasonic transducer (220), ultrasonic variable amplitude bar (230) and ultrasound wave emission tool head (240), and ultrasound wave emission tool head (240) stretches in cavity (110) and contacts with the top ends of earth pillar;
For earth pillar being provided to the liquid feed device of the liquid that is mixed with colloid, it comprises liquid reserve tank (310), feed tube (320), peristaltic pump (330) and flowmeter (340), it is upper that liquid reserve tank (310), peristaltic pump (330) and flowmeter (340) are installed in feed tube (320) successively, and feed tube (320) stretches in cavity (110) and is connected with the top ends sidewall of earth pillar;
Liquid discharge device, it comprises for measuring nephelometer (410) and the drain pipe (420) of the liquid colloid turbidity flowing out from earth pillar bottom, it is upper that nephelometer (410) is installed in drain pipe (420), and drain pipe (420) stretches in cavity (110) and is connected with the bottom of earth pillar.
2. the earth pillar pressure chamber system that ultrasound wave according to claim 1 is controlled, is characterized in that: the width of described earth pillar is less than the width of cavity (110), earth pillar be highly less than height of cavity (110).
3. the earth pillar pressure chamber system that ultrasound wave according to claim 1 is controlled, it is characterized in that: the top ends of described pressure chamber is provided with projection (120), projection (120) offers and longitudinally runs through the inside and outside through hole (121) of cavity (110), and ultrasound wave emission tool head (240) is stretched in cavity (110) and coordinated with through hole (121) phase air-tight movable by through hole (121).
4. the earth pillar pressure chamber system that ultrasound wave according to claim 1 is controlled, it is characterized in that: described earth pillar comprises columned soil sample (510), described pressure chamber convexes with flange (130) in cavity (110), described soil sample (510) is positioned on flange (130), described elastic waterproof layer (520) extends to flange (130) periphery, separately be provided with for the fixing flexible fastening piece of elastic waterproof layer (520), flexible fastening piece is tightly placed on flange (130) and earth pillar top ends periphery.
5. the earth pillar pressure chamber system that ultrasound wave according to claim 4 is controlled, it is characterized in that: described earth pillar also comprises permeable part (530) and lower permeable part (540), upper permeable part (530) comprises the screen cloth part of sealing and affixed sealing, screen cloth part is placed in the top of soil sample (510), elastic waterproof layer (520) extends upward week outside supreme permeable part (530), and feed tube (320) passes elastic waterproof layer (520) and is connected with upper permeable part (530) sidewall; Lower permeable part (540) contact between soil sample (510) and flange (130) and end face be mesh structure, drain pipe (420) passes flange (130) and is connected with lower permeable part (540) bottom surface, and ultrasound wave emission tool head (240) contacts with the sealing of upper permeable part (530).
6. the earth pillar pressure chamber system that ultrasound wave according to claim 5 is controlled, it is characterized in that: the thickness of described upper permeable part (530) is that the aperture of 4-6 millimeter and screen cloth part is 0.4-0.6 millimeter, the thickness of described lower permeable part (540) is that the aperture of 4-6 millimeter and screen cloth is 0.4-0.6 millimeter.
7. the earth pillar pressure chamber system that ultrasound wave according to claim 1 is controlled, it is characterized in that: also comprise vibration detecting device, it comprises vibration probe (610) for surveying earth pillar vibrating bottom situation and for earth pillar vibrating bottom situation being converted to the vialog (620) of vibration data, vibration probe (610) passes cavity (110) and stretches into the bottom of earth pillar, and vialog (620) is connected with vibration probe (610).
8. the earth pillar pressure chamber system that ultrasound wave according to claim 1 is controlled, it is characterized in that: also comprise temperature measuring equipment, it comprises for detection of the temperature-sensing element (710) of the interior temperature of cavity (110) with for showing the temperature indicator (720) of temperature-sensing element (710) measured temperature, temperature-sensing element (710) stretches in cavity (110), and temperature indicator (720) is connected with temperature-sensing element (710).
9. the earth pillar pressure chamber system that ultrasound wave according to claim 1 is controlled, it is characterized in that: also comprise can exert pressure to cavity (110), pressure measurement and the confined pressure that can measure the volume change of the interior water of cavity (110) apply and measuring equipment (800), separately be provided with pressure connection tube (810), two ends of pressure connection tube (810) connect respectively cavity (110) and confined pressure applies and measuring equipment (800).
10. the earth pillar pressure chamber system of controlling according to the ultrasound wave described in any one in claim 1 to 9, it is characterized in that: described pressure chamber comprises body (140), top cover (150) and the bottom (160) of tubular, the double-decker that the perisporium of body (140) is hollow, separately be provided with and receive the heat insulation soft felt of base (141), this is received the heat insulation soft felt of base (141) and is installed in the perisporium of body (140); The top of body (140) is provided with along limit (142), the bottom of body (140) is provided with lower along limit (143), top cover (150) lid be connected on body (140) top and and above along between limit (142), by bolt (170), fix, bottom (160) lid is connected on the bottom of body (140) and with lower (143) fix by bolt (170) along limit, the cavity (110) described in surrounding between body (140), top cover (150) and bottom (160).
The earth pillar pressure chamber system that 11. ultrasound waves according to claim 10 are controlled, it is characterized in that: described pressure chamber also comprises upper ceramic wafer (180) and the lower ceramic wafer (190) with water proof and effect of heat insulation, upper ceramic wafer (180) contact is between top cover (150) and the top of body (140), and lower ceramic wafer (190) contact is between bottom (160) and the bottom of body (140).
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| CN201410260204.9A CN104007051A (en) | 2014-06-12 | 2014-06-12 | Ultrasonic control earth pillar pressure chamber system |
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| CN201410260204.9A Pending CN104007051A (en) | 2014-06-12 | 2014-06-12 | Ultrasonic control earth pillar pressure chamber system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106018562A (en) * | 2016-07-01 | 2016-10-12 | 杭州敦固建筑特种工程有限公司 | Concrete filled steel tubular column mechanical wave testing equipment tool and arrangement method |
| CN107340333A (en) * | 2017-08-01 | 2017-11-10 | 华侨大学 | Three-dimensional large power supersonic control bubbles silt consolidation pilot system and its method |
| CN107727471A (en) * | 2017-11-13 | 2018-02-23 | 中交天津港航勘察设计研究院有限公司 | A kind of preparation of soil sample device using fluid cavitation effect |
| CN108490070A (en) * | 2018-02-23 | 2018-09-04 | 清华大学 | A kind of jointed rock mass sample ultrasonic testing equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018562A (en) * | 2016-07-01 | 2016-10-12 | 杭州敦固建筑特种工程有限公司 | Concrete filled steel tubular column mechanical wave testing equipment tool and arrangement method |
| CN107340333A (en) * | 2017-08-01 | 2017-11-10 | 华侨大学 | Three-dimensional large power supersonic control bubbles silt consolidation pilot system and its method |
| CN107340333B (en) * | 2017-08-01 | 2023-04-07 | 华侨大学 | Three-dimensional high-power ultrasonic control consolidation test system and method for bubble-containing sludge |
| CN107727471A (en) * | 2017-11-13 | 2018-02-23 | 中交天津港航勘察设计研究院有限公司 | A kind of preparation of soil sample device using fluid cavitation effect |
| CN108490070A (en) * | 2018-02-23 | 2018-09-04 | 清华大学 | A kind of jointed rock mass sample ultrasonic testing equipment |
| CN108490070B (en) * | 2018-02-23 | 2019-10-01 | 清华大学 | A kind of jointed rock mass sample ultrasonic testing equipment |
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