CN110988122B - Sectional type coupling device and method suitable for upward inclined borehole sound wave test - Google Patents
Sectional type coupling device and method suitable for upward inclined borehole sound wave test Download PDFInfo
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- CN110988122B CN110988122B CN201911221565.1A CN201911221565A CN110988122B CN 110988122 B CN110988122 B CN 110988122B CN 201911221565 A CN201911221565 A CN 201911221565A CN 110988122 B CN110988122 B CN 110988122B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
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Abstract
The invention discloses a sectional type coupling device suitable for an upward inclined hole sound wave test and a using method thereof. The invention can ensure the smooth and efficient performance of the sound wave test in the upward inclined hole, solves the problem of high coupling difficulty of the sound wave test in the upward inclined hole, avoids the direct contact of the transducer and the hole wall, avoids the waste of water resources, is convenient to disassemble and carry, meets the test requirement of drilling in a narrow cavity, and ensures the authenticity and accuracy of the sound wave test result of the upward inclined hole.
Description
Technical Field
The invention relates to a sectional type coupling device suitable for performing sound wave test in a drill hole in an upward inclining direction and a using method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The rock mass acoustic wave test is that elastic waves with certain frequency are artificially excited to propagate in a rock mass structure and are received by a corresponding receiver, and information such as rock mass physical and mechanical properties, structural characteristics and the like is indirectly acquired by recording and analyzing fluctuation signals received by the receiver, so that the rock mass acoustic wave test serves geotechnical engineering.
In the actual rock mass acoustic wave test process, the transmitting transducer (probe) and the receiving transducer (probe) must be well coupled with the wall of a borehole through coupling media, the method of filling clear water into the borehole is most widely applied, the method is feasible in the vertical borehole, but the difficulty is high when the method is applied in the borehole in the upward inclination direction, and the coupling of the transducers and the wall of the borehole is difficult to ensure. Even if a high-water-pressure continuous water injection method is adopted, the transducer is difficult to ensure to be completely in a coupling environment, a large amount of water resources are wasted, and meanwhile, the impact of high-water-pressure water flow cannot ensure the stability of the transducer, so that the transducer is in direct contact with the hole wall, and the detection result is directly influenced.
In order to solve the coupling problem of the upward inclined hole acoustic wave test, a device and a method for wrapping a transducer to assist coupling by using a water-filled air bag, an elastic capsule water jacket and the like are proposed, and the defects of the method are as follows: the coupling problem of transducer and pore wall is not solved at all, proves in the actual engineering practice, and the parcel of materials such as gasbag can influence the propagation of sound wave, causes test error, influences the testing result, and in addition, the condition of gasbag card in the drilling appears easily, influences going on of test.
Secondly, another problem is faced when conducting acoustic testing in angled deviated boreholes: due to gravity, the transducer can be in direct contact with the hole wall, and authenticity and accuracy of a sound wave test result cannot be guaranteed.
Disclosure of Invention
The invention aims to solve the defects and provides a sectional type coupling device suitable for an upward inclined hole sound wave test and a using method thereof. The invention can ensure the smooth and efficient performance of the sound wave test in the upward inclined hole, solves the problem of high coupling difficulty of the sound wave test in the upward inclined hole, avoids the direct contact of the transducer and the hole wall, avoids the waste of water resources, is convenient to disassemble and carry, meets the test requirement of drilling in a narrow cavity, and ensures the authenticity and accuracy of the sound wave test result of the upward inclined hole.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sectional type coupling device suitable for an upward inclined hole sound wave test comprises a transducer suspension air bag, a transducer, a plugging air bag, an umbrella rib type spring steel sheet, a water inlet pipe outer sleeve and a water supply system;
the transducer suspension air bag is connected with the transducer through a flexible thin wire, the length h of the flexible thin wire is less than r-l, wherein r is the maximum radius of the transducer suspension air bag, and l is the height of the transducer; the blocking air bag is an annular flat air bag, a middle through hole allows a water inlet pipe to pass through, and a rubber water stop is arranged around the middle through hole; the plugging air bag, the hole wall of the drill hole and the transducer suspension air bag form a closed space, the transducer is positioned in the closed space, one end of the water inlet pipe is connected with the water supply system, and the other end of the water inlet pipe extends into the closed space; one end of the umbrella rib type spring steel sheet is fixed at the bottom of the plugging air bag, the other end of the umbrella rib type spring steel sheet is connected with the wall of the water inlet pipe, the outer sleeve is sleeved outside the water inlet pipe, and the water inlet pipe can drive the umbrella rib type spring steel sheet to freely slide up and down in the outer sleeve of the water inlet pipe.
As a further technical scheme, the transducer suspension air bag is a spherical inflatable air bag, and the maximum radius of the transducer suspension air bag is 1-2cm smaller than the radius of the sound wave test drill hole.
As a further technical scheme, a skirt-pendulum-shaped annular water stop is cemented at the maximum vertical outer edge of the transducer suspension air bag, and the length of a bus of the water stop is 3-5 cm.
As a further technical scheme, an inverted skirt-shaped annular water stop belt is cemented at the position of the vertical maximum outer edge of the plugging air bag.
According to a further technical scheme, the umbrella rib type spring steel sheet comprises at least four spring steel sheets, the spring steel sheets are arc-shaped, one end of each spring steel sheet is cemented to the bottom of the plugging air bag, and the other end of each spring steel sheet is welded on the water inlet pipe;
as a further technical scheme, a cavity is arranged in the outer sleeve of the water inlet pipe, the outer sleeve of the water inlet pipe is provided with a spiral chute, and the top of the water inlet pipe is provided with a hemispherical bulge which is matched with the chute. The water inlet pipe can drive the umbrella rib type spring steel sheet to freely slide up and down in the water inlet pipe outer sleeve through the protrusion sliding in the sliding groove;
as a further technical scheme, the outer sleeve of the water inlet pipe and the water inlet pipe are in multiple sections, the signal cable of the transducer is arranged in the water inlet pipe, and the sections can be connected through threads and are connected according to different testing depth requirements;
as a further technical scheme, the water supply system comprises a variable frequency water pump, a water supply pipe, a water pressure meter and a water tank so as to meet the water supply requirements of different water pressures.
As a further technical solution, the method for using the segmented coupling device suitable for the inclined hole acoustic wave test includes:
step 1: connecting a water inlet pipe and an outer sleeve of the water inlet pipe section by section according to the length of a drill hole to be tested, rotating the water inlet pipe downwards along a chute of the outer sleeve of the water inlet pipe, and contracting an umbrella rib type spring steel sheet and a plugging air bag to conveniently enter the size of the drill hole to be tested;
step 2: after the device is stretched into a drill hole to be tested, the water inlet pipe is rotated upwards along the outer sleeve chute of the water inlet pipe, the umbrella rib type spring steel sheet is extended to the maximum extent, and the plugging air bag is ensured to be tightly contacted with the wall of the drill hole;
and step 3: connecting a water supply pipe with a water inlet pipe and debugging a water supply system;
and 4, step 4: the water supply pressure is reasonably controlled according to the depth of the drilled hole to supply water, the inverted skirt-shaped annular water stop on the plugging air bag is tightly attached to the wall of the drilled hole under the action of water to further ensure the plugging effect, and the transducer suspension air bag drives the transducer to gradually float under the action of buoyancy;
and 5: after the water pressure is stable, the sound wave test of the measuring point is carried out, after the test is finished, the water supply system is closed, the water inlet pipe is rotated downwards along the outer sleeve chute of the water inlet pipe, the umbrella rib type spring steel sheet and the plugging air bag are contracted, and the water inlet pipe moves to the next measuring point;
step 6: and (5) repeating the steps 4 and 5 until the test of all the test points in the drill hole is finished, disassembling the water inlet pipe and the outer sleeve of the water inlet pipe, cleaning and boxing.
The invention has the beneficial effects that:
the invention can ensure the smooth and efficient performance of the sound wave test in the upward inclined hole, solves the problem of high coupling difficulty of the sound wave test in the upward inclined hole, creates a good coupling environment for the transducer by a sectional type plugging mode, avoids water resource waste, and ensures the authenticity and accuracy of the sound wave test result of the upward inclined hole to the maximum extent.
The device is convenient to advance and retreat in the upward inclined drill hole by contracting and extending the umbrella rib type spring steel sheet and the plugging air bag, the air bag is prevented from being clamped in the upward inclined drill hole, and the air bag does not need to be repeatedly inflated and deflated;
the inverted skirt-shaped annular water stop band on the plugging air bag is tightly attached to the wall of the drill hole under the gravity action of water, so that the water leakage of a gap between the plugging air bag and the wall of the drill hole is prevented, and the plugging effect is ensured to the maximum extent under the action of the plugging air bag, so that the coupling environment of the transducer is ensured;
the transducer suspension gasbag is under the buoyancy for the transducer can keep between two parties in the drilling of slope, effectively avoids the contact of transducer and drilling wall, guarantees the accuracy of test effect.
The mode of connecting inlet tube and inlet tube outer tube through the merogenesis has greatly improved the device's flexibility, conveniently carries and dismantles, satisfies the needs of drilling sound wave test in the narrow and small chamber.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a water inlet pipe and an umbrella rib type spring steel sheet;
FIG. 3 is a sectional view of the outer sleeve of the water inlet pipe;
FIG. 4 is a top view of the water inlet pipe and the umbrella rib type spring steel sheet;
FIG. 5 is a schematic view of an occlusion balloon;
FIG. 6 is a schematic view of a skirt-shaped ring-shaped water stop;
the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only. Wherein: the energy converter comprises an energy converter suspension air bag 1, a skirt-shaped annular water stop belt 2, a flexible thin line 3, an energy converter 4, an energy converter signal cable 5, an inverted skirt-shaped annular water stop belt 6, a plugging air bag 7, an umbrella rib type spring steel sheet 8, a water inlet pipe 9, a hemispherical bulge 10, a water inlet pipe outer sleeve 11, a spiral chute 12, a variable frequency water pump 13, a water supply pipe 14, a water pressure gauge 15 and a water tank 16.
Detailed Description
The invention is further described with reference to the following figures and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
In a typical embodiment of the present application, as shown in fig. 1, 2, and 3, a sectional type coupling device suitable for an upward hole acoustic wave test includes a transducer suspension airbag 1, a blocking airbag 7, an umbrella rib type spring steel sheet 8, a water inlet pipe 9, a water inlet pipe outer sleeve 11, and a water supply system;
the transducer suspension air bag 1 is connected with the transducer 4 through a flexible thin line, the plugging air bag 7, the hole wall of the drill hole and the transducer suspension air bag 1 form a closed space, the transducer 4 is positioned in the closed space, one end of the water inlet pipe 9 is connected with the water supply system, and the other end of the water inlet pipe extends into the closed space; one end of the umbrella rib type spring steel sheet is fixed at the bottom of the plugging air bag, the other end of the umbrella rib type spring steel sheet is connected with the wall of the water inlet pipe, the outer sleeve is sleeved outside the water inlet pipe, and the water inlet pipe can drive the umbrella rib type spring steel sheet to freely slide up and down in the outer sleeve of the water inlet pipe.
The specific structure of each component is as follows:
the transducer suspension air bag 1 is connected with the transducer 4 through the flexible thin wire 3, the length h of the flexible thin wire 3 is less than r-l (r is the maximum radius of the transducer suspension air bag 1, and l is the height of the transducer 4), the transducer is ensured not to be contacted with the hole wall, the transducer suspension air bag 1 is a spherical inflation air bag, the maximum radius of the transducer suspension air bag is 1-2cm smaller than the radius of a sound wave test drilling hole, and the inflation air bag is prevented from being clamped in the drilling hole; the transducer 4 is connected with a sound wave test host machine on the ground through a transducer signal cable 5.
The energy converter suspension air bag 1 is glued with a skirt-shaped annular water stop 2 at the vertical maximum outer edge, and further, the skirt-shaped annular water stop 2 is 3-5cm long in generatrix; if the water stop belt is too long, the water stop belt is adhered to the hole wall, the transmission of sound wave signals can be influenced, and the water blocking effect can be influenced in a too short time.
As shown in fig. 5, the plugging air bag 7 is an annular flat closed air bag, a through hole in the middle allows the water inlet pipe 9 to pass through, and a rubber water stop is arranged around the through hole in the middle; one end of the feed pipe 9 is connected to a water supply pipe 14, and the other end of the feed pipe 9 extends into the enclosed space in which the transducer 4 is located. An inverted skirt-shaped annular water stop belt 6 is cemented at the vertical maximum outer edge of the plugging air bag 7;
the umbrella rib type spring steel sheets 8 comprise at least four spring steel sheets, the spring steel sheets are arc-shaped, one end of each spring steel sheet is cemented at the bottom of the plugging air bag 7, and the other end of each spring steel sheet is welded on the side wall of the water inlet pipe 9; in this embodiment, four spring steel plates are provided, as shown in fig. 2.
The water inlet pipe outer sleeve 11 is internally provided with a cavity and a spiral chute 12, the water inlet pipe outer sleeve 11 is sleeved on the outer ring of the water inlet pipe 9, the side wall of the water inlet pipe 9 is provided with a hemispherical bulge 10, and the hemispherical bulge 10 is matched with the chute 12 (particularly, in the figure 2, the bulge is positioned at the middle upper part of the water inlet pipe). Through the matching of the hemispherical bulge 10 and the spiral chute 12, the water inlet pipe 9 can drive the umbrella rib type spring steel sheet 8 to freely slide up and down in the water inlet pipe outer sleeve 11; it will be understood that in other embodiments, the hemispherical protrusion 10 may be replaced by a spiral protrusion, and the outer sleeve 11 of the water inlet pipe and the water inlet pipe are engaged by a screw thread to realize the relative movement therebetween.
Furthermore, the outer sleeve 11 of the water inlet pipe and the water inlet pipe 9 are both in multiple sections, the transducer signal cable 5 is arranged in the water inlet pipe 9, and the sections can be connected through threads and connected according to different testing depth requirements;
the water supply system comprises a variable frequency water pump 13, a water supply pipe 14, a water pressure gauge 15 and a water tank 16 to meet the water supply requirements of different water pressures, specifically, as shown in fig. 1, the water tank 16 is connected with the water supply pipe 14 through the variable frequency water pump 13, and the water supply pipe 14 is provided with the water pressure gauge 15; the water supply device supplies water to ensure that the hole wall of the part of the drilled hole where the transducer 4 is positioned and a cylindrical closed space formed by the plugging air bag 7, the transducer suspension air bag 1 and the arranged water stop belt are filled with water through the water supply device, so that the transducer 4 is positioned in the water; the transducer 4 is a probe of the acoustic testing device, the transducer 4 transmits an acoustic signal to be received by the transducer in another borehole, and the lead of the transducer is connected with an acoustic testing host machine on the ground, so that the acoustic testing is realized.
As a further technical solution, the method for using the segmented coupling device suitable for the inclined hole acoustic wave test includes:
step 1: connecting a water inlet pipe 9 and a water inlet pipe outer sleeve 11 section by section according to the length of a drill hole to be tested, rotating the water inlet pipe 9 downwards along a water inlet pipe outer sleeve sliding groove 12, and contracting the umbrella rib type spring steel sheet 8 and the plugging air bag 7 to the size convenient for entering the drill hole to be tested;
step 2: after the device is stretched into a position to be tested in a drill hole, the water inlet pipe 9 is rotated upwards along the water inlet pipe outer sleeve sliding groove 12, the umbrella rib type spring steel sheet 8 is extended to the maximum extent, and the plugging air bag 7 is ensured to be in close contact with the wall of the drill hole;
and step 3: connecting a water supply pipe 14 with a water inlet pipe 9 and debugging a water supply system;
and 4, step 4: the water supply pressure is reasonably controlled according to the depth of the drilled hole to supply water, the inverted skirt-shaped annular water stop belt 6 on the plugging air bag 7 is tightly attached to the wall of the drilled hole under the action of water to further ensure the plugging effect, and the energy transducer suspension air bag 1 drives the energy transducer 4 to gradually float under the action of buoyancy;
and 5: after the water pressure is stable, the sound wave test of the measuring point is carried out, after the test is finished, the water supply system is closed, the water inlet pipe 9 is rotated downwards along the water inlet pipe outer sleeve sliding groove 12, the umbrella rib type spring steel sheet 8 and the plugging air bag 7 are contracted, and the test is moved to the next measuring point;
step 6: and (5) repeating the steps 4 and 5 until the test of all the test points in the drill hole is finished, disassembling the water inlet pipe 9 and the water inlet pipe outer sleeve 11, cleaning and boxing.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A sectional type coupling device suitable for an upward inclined hole sound wave test is characterized by comprising an energy converter suspension air bag, a plugging air bag, an umbrella rib type spring steel sheet, a water inlet pipe, an outer sleeve and a water supply system; the transducer suspension air bag is connected with the transducer through a flexible thin line, the plugging air bag is an annular flat air bag, a middle through hole allows a water inlet pipe to pass through, and a rubber water stop is arranged around the middle through hole; the plugging air bag, the hole wall of the drilled hole and the transducer suspension air bag form a closed space, one end of the water inlet pipe is connected with the water supply system, and the other end of the water inlet pipe extends into the closed space; one end of the umbrella rib type spring steel sheet is fixed at the bottom of the plugging air bag, the other end of the umbrella rib type spring steel sheet is connected with the wall of the water inlet pipe, the outer sleeve is sleeved outside the water inlet pipe, and the water inlet pipe can drive the umbrella rib type spring steel sheet to freely slide up and down in the outer sleeve of the water inlet pipe; the water supply pressure is reasonably controlled according to the drilling depth to supply water, the inverted skirt-shaped annular water stop belt on the plugging air bag is tightly attached to the wall of the drilling hole under the action of water to further guarantee the plugging effect, and the transducer suspension air bag drives the transducer to gradually float under the action of buoyancy.
2. The segmented coupling device for upward-inclined hole acoustic testing of claim 1, wherein said transducer levitation balloon is a spherical inflatable balloon with a maximum radius 1 to 2cm smaller than the acoustic testing borehole radius.
3. The segmented coupling device suitable for the upward inclined hole acoustic wave test as claimed in claim 1, wherein the largest vertical outer edge of the transducer suspension air bag is cemented with a skirt-shaped annular water stop.
4. The segmented coupling device for upward inclined hole acoustic wave testing of claim 1, wherein said transducer is connected to a host acoustic wave testing machine on the ground by a transducer signal cable; the transducer signal cable is arranged in the water inlet pipe.
5. The segmented coupling device suitable for the upward inclined hole sound wave test as claimed in claim 1, wherein the blocking air bag is cemented with an inverted skirt-shaped annular water stop at the vertical largest outer edge.
6. The segmented coupling device suitable for the upward inclined hole sound wave test as claimed in claim 1, wherein the umbrella rib type spring steel plate comprises at least four spring steel plates, the spring steel plates are arc-shaped, one end of each spring steel plate is glued at the bottom of the plugging air bag, and the other end of each spring steel plate is welded on the water inlet pipe.
7. The device of claim 1, wherein the outer sleeve has a cavity therein and a spiral groove, and the sidewall of the inlet pipe has a hemispherical protrusion matching with the groove.
8. The segmented coupling device for upward inclined hole acoustic wave testing as claimed in claim 1, wherein the outer sleeve of the water inlet pipe and the water inlet pipe are in multiple segments, and the segments can be connected through screw threads and can be connected according to different testing depth requirements.
9. The segmented coupling device for upward hole acoustic testing of claim 1, wherein the flexible filament length h < r-l, where r is the maximum radius of the transducer suspension bladder and l is the height of the transducer.
10. The method of using a segmented coupling device for inclined hole acoustic testing according to any one of claims 1 to 9,
step 1: connecting a water inlet pipe and an outer sleeve of the water inlet pipe section by section according to the length of a drill hole to be tested, rotating the water inlet pipe downwards along a chute of the outer sleeve of the water inlet pipe, and contracting an umbrella rib type spring steel sheet and a plugging air bag to conveniently enter the size of the drill hole to be tested;
step 2: after the device is stretched into a drill hole to be tested, the water inlet pipe is rotated upwards along the outer sleeve chute of the water inlet pipe, the umbrella rib type spring steel sheet is extended to the maximum extent, and the plugging air bag is ensured to be tightly contacted with the wall of the drill hole;
and step 3: connecting a water supply pipe with a water inlet pipe and debugging a water supply system;
and 4, step 4: the water supply pressure is reasonably controlled according to the depth of the drilled hole to supply water, the inverted skirt-shaped annular water stop on the plugging air bag is tightly attached to the wall of the drilled hole under the action of water to further ensure the plugging effect, and the transducer suspension air bag drives the transducer to gradually float under the action of buoyancy;
and 5: after the water pressure is stable, the sound wave test of the measuring point is carried out, after the test is finished, the water supply system is closed, the water inlet pipe is rotated downwards along the outer sleeve chute of the water inlet pipe, the umbrella rib type spring steel sheet and the plugging air bag are contracted, and the water inlet pipe moves to the next measuring point;
step 6: and (5) repeating the steps 4 and 5 until the test of all the test points in the drill hole is finished, disassembling the water inlet pipe and the outer sleeve of the water inlet pipe, cleaning and boxing.
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| CN201911221565.1A CN110988122B (en) | 2019-12-03 | 2019-12-03 | Sectional type coupling device and method suitable for upward inclined borehole sound wave test |
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| CN201811917U (en) * | 2010-07-28 | 2011-04-27 | 山东大学 | Photoacoustic spectrum gas detection system based on Mach-Zehnder interferometer |
| CN104094098A (en) * | 2012-02-03 | 2014-10-08 | 埃尔特克有限公司 | Sensor and method for measuring properties of a liquid by means of a sensing element |
| CN104713950A (en) * | 2015-03-31 | 2015-06-17 | 中国科学院武汉岩土力学研究所 | Acoustic wave test coupling device and test method thereof |
| CN106523845A (en) * | 2016-12-15 | 2017-03-22 | 福州市水务管网维护有限公司 | Pipeline plugging device |
| CN208377422U (en) * | 2018-07-09 | 2019-01-15 | 山东威邦工艺品股份有限公司 | A kind of art glass bottle gasket |
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