CN215414888U - Testing device for penetration strength of underwater surface soil body - Google Patents
Testing device for penetration strength of underwater surface soil body Download PDFInfo
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- CN215414888U CN215414888U CN202120921709.0U CN202120921709U CN215414888U CN 215414888 U CN215414888 U CN 215414888U CN 202120921709 U CN202120921709 U CN 202120921709U CN 215414888 U CN215414888 U CN 215414888U
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Abstract
The utility model relates to a device for testing the penetration strength of an underwater surface soil body, which comprises a pressure cylinder for placing the surface of the underwater soil body, wherein a sealing plate which is in sealing fit with the inner wall of the pressure cylinder and can slide up and down relative to the pressure cylinder is arranged in the inner cavity of the pressure cylinder, a testing rod extending downwards is fixedly connected to the lower side of the sealing plate, a bottom hole for the lower end of the testing rod to penetrate through and be in sealing sliding fit with is formed in the lower end of the pressure cylinder, an annular copper electrode is embedded in the upper end of the pressure cylinder, an electrode rod extending upwards is fixedly connected to the upper end of the sealing plate, the electrode rod penetrates through the middle of the copper electrode and is in sealing sliding fit with the copper electrode, a plurality of electrode plates which are matched with the copper electrode through the sliding of the electrode rod are arranged on the electrode rod at intervals, the electrode plates and the copper electrode are connected with a universal meter through leads, and the upper end of the pressure cylinder is also connected with an inflation tube and an exhaust tube. The device for testing the penetration strength of the soil body on the underwater surface layer has the advantages of simple structure, low manufacturing cost and convenient operation, and is beneficial to being applied to a large number of projects.
Description
Technical Field
The utility model relates to the technical field of geological survey, in particular to a device for testing the penetration strength of an underwater surface soil body.
Background
With the expansion of the infrastructure of China, more and more underwater projects are provided, for example, pipelines are laid at the bottom of a river, a lake or the sea, the strength of a surface soil body needs to be tested, when the water depth is shallow, a cross plate shearing instrument can be used for testing, and the testing is easy; however, when the water depth is deep or the water flow is large, a large error exists in the test result of the cross plate shearing instrument; at the moment, a static penetrometer can be selected for testing, but the underwater static penetrometer is expensive and inconvenient for large-scale application of engineering.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to provide a device for testing the penetration strength of an underwater surface soil body, which has a simple structure, low manufacturing cost and convenient operation.
The utility model is realized by adopting the following scheme: the utility model provides an underwater surface layer soil body penetration strength test device, is including placing the pressure section of thick bamboo on the soil body surface under water, the pressure section of thick bamboo inner chamber is provided with and can be relative its gliding closing plate from top to bottom with pressure section of thick bamboo inner wall seal fit, the closing plate downside links firmly downwardly extending's test bar, the pressure section of thick bamboo lower extreme is seted up and is supplied the test bar lower extreme to pass and rather than sealed sliding fit's bottom hole, the pressure section of thick bamboo upper end inlays and is equipped with annular copper electrode, and the closing plate upper end links firmly the electrode bar that upwards extends, the electrode bar passes and rather than sealed sliding fit by the copper electrode centre, the interval is provided with a plurality ofly slides through the electrode bar and copper electrode complex electrode slice on the electrode bar, electrode slice and copper electrode pass through the wire and are connected with universal meter, pressure section of thick bamboo upper end still is connected with gas tube and exhaust tube.
The ship body floats on the water surface, a high-pressure pump and a vacuum pump are arranged on the ship body, the vacuum pump is connected with an exhaust pipe, the high-pressure pump is connected with an inflation pipe, valves are arranged on the inflation pipe and the exhaust pipe, and a pressure gauge is further arranged on the inflation pipe.
Further, the universal meter is also arranged on the ship body, the electrode bar is of a hollow structure, and a lead connected with an electrode plate on the electrode bar penetrates out of the upper end of the electrode bar through an inner hole of the electrode bar.
Furthermore, the upper end of the pressure cylinder is fixedly connected with a pair of hanging rings used for connecting a rope.
Compared with the prior art, the utility model has the following beneficial effects: the device for testing the penetration strength of the soil body on the underwater surface layer has the advantages of simple structure, low manufacturing cost and convenient operation, and is beneficial to being applied to a large number of projects.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
Drawings
FIG. 1 is a schematic construction of an embodiment of the present invention;
the reference numbers in the figures illustrate: 1-pressure cylinder, 2-sealing plate, 3-testing rod, 4-electrode bar, 5-multimeter, 6-high pressure pump, 7-vacuum pump, 8-pressure gauge, 9-valve, 10-hanging ring, 11-electrode slice, 12-lead and 13-copper electrode.
Detailed Description
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.
As shown in figure 1, the device for testing the penetration strength of the soil body on the underwater surface layer comprises a pressure cylinder 1 for placing the surface of the underwater soil body, wherein the pressure cylinder is cylindrical, the height is 1.2-1.5 m, and the diameter is 30-50 cm is made of steel, and the wall thickness is 2-5 mm; the inner cavity of the pressure cylinder 1 is provided with a sealing plate 2 which is in sealing fit with the inner wall of the pressure cylinder 1 and can slide up and down relative to the pressure cylinder, the sealing plate is also made of a steel plate, the outer diameter of the sealing plate is the same as the inner diameter of the pressure cylinder, the sealing plate has higher rigidity, the wall thickness is 2-5 mm, and the sealing property between the sealing plate and the pressure cylinder is good; the lower side of the sealing plate 2 is fixedly connected with a downward extending test rod 3, the lower end of the pressure cylinder 1 is provided with a bottom hole through which the lower end of the test rod 3 passes and is in sealing sliding fit with the lower end of the pressure cylinder, the test rod is made of steel, the diameter of the test rod is 1.0-2.0 cm, the length of the test rod is about 1.0m, the bottom end of the test rod is conical, the cone angle of the test rod is 30 degrees, and the test rod is vertical to the sealing plate; an annular copper electrode 13 is embedded at the upper end of the pressure cylinder 1, an electrode rod 4 extending upwards is fixedly connected at the upper end of the sealing plate 2, the electrode rod is made of high-strength carbon fibers or glass fibers, the diameter of the electrode rod is 1.0-2.0 cm, the length of the electrode rod is about 1.0m, a plurality of electrode plates 11 matched with the copper electrode through the electrode rod sliding are arranged on the electrode rod 4 at intervals, the electrode plates are also made of copper and are annular, the interval between every two adjacent electrode plates is 20cm, and the electrode plates 11 and the copper electrode 13 are connected with a universal meter 5 through a lead 12 to test the resistance of the electrode plates and the copper electrode; the upper end of the pressure cylinder 1 is also connected with an inflation tube and an exhaust tube; then calculating the penetration strength N of the soil body at different depths according to the following formulai，Ni=Pi（A-A0) Wherein P isiThe number of the pressure gauges at different depths is read, i is an integer from 1 to n, n represents the number of electrode plates, A is the area of the sealing plate, and A0Is the cross-sectional area of the electrode rod.
The device for testing the penetration strength of the soil body on the underwater surface layer has the advantages of simple structure, low manufacturing cost and convenient operation, and is beneficial to being applied to a large number of projects.
In this embodiment, still including the hull 14 that floats on the surface of water, be equipped with high-pressure pump 6 and vacuum pump 7 on the hull 14, vacuum pump 7 is connected with the exhaust tube, high-pressure pump and gas tube connection are equipped with valve 9 on gas tube and the exhaust tube, still be equipped with manometer 8 on the gas tube.
In this embodiment, the multimeter 5 is also disposed on the hull 14, the electrode bar 4 is a hollow structure, and a wire connected with an electrode plate on the electrode bar 4 penetrates out from the upper end through an inner hole of the electrode bar.
In this embodiment, the upper end of the pressure cylinder 1 is fixedly connected with a pair of lifting rings 10 for connecting a rope, so that the rope can lift and lower the pressure cylinder.
The testing process of the underwater surface layer soil body penetration strength testing device comprises the following steps: moving the ship body to a test place, placing a high-pressure pump, a vacuum pump and a pressure gauge on the ship body, fixing a hanging ring at the top of the pressure cylinder on a rope, closing a valve on an inflation pipe, starting the vacuum pump, pumping air between a sealing plate and the top of the pressure cylinder, closing the valve on an exhaust pipe, and keeping the sealing plate at the topmost position under the action of vacuum pressure; placing the pressure cylinder on the surface of the underwater soil body by using a winch; opening a valve on the inflation tube, starting the high-pressure pump, slowly increasing the pressure, and observing the reading of the pressure gauge and the reading of the universal meter; when the resistance reading of the multimeter is instantly reduced, the first electrode plate of the electrode rod is in contact with the copper electrode of the pressure cylinder, the test rod penetrates into the depth of the first electrode plate, and the reading P of the pressure gauge is recorded1According to the method, the reading of the pressure gauge at the depth of the test rod penetrating into the rest electrode plates is recorded, and is respectively P2、P3、P4、P5… …, and then calculating the penetration strength N of soil bodies at different depths according to the following formulai，Ni=Pi（A-A0) Wherein P isiThe number of the pressure gauges at different depths is read, i is an integer from 1 to n, n represents the number of electrode plates, A is the area of the sealing plate, and A0Is the cross-sectional area of the electrode rod.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the utility model discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the utility model can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides an underwater surface layer soil body penetration strength testing arrangement which characterized in that: including placing the pressure section of thick bamboo on the soil body surface under water, the pressure section of thick bamboo inner chamber is provided with and can be relative its gliding closing plate from top to bottom with pressure section of thick bamboo inner wall sealing fit, the closing plate downside links firmly downwardly extending's test bar, the pressure section of thick bamboo lower extreme is seted up and is supplied the test bar lower extreme to pass and rather than sealed sliding fit's bottom hole, the pressure section of thick bamboo upper end inlays and is equipped with annular copper electrode, and the closing plate upper end links firmly the electrode bar of upwards extending, the electrode bar passes and rather than sealed sliding fit by the copper electrode centre, the interval is provided with a plurality of electrode slices of sliding through the electrode bar and copper electrode complex on the electrode bar, electrode slice and copper electrode pass through the wire and are connected with universal meter, the pressure section of thick bamboo upper end still is connected with gas tube and exhaust tube.
2. The underwater surface soil body penetration strength testing device according to claim 1, characterized in that: the ship body floats on the water surface, a high-pressure pump and a vacuum pump are arranged on the ship body, the vacuum pump is connected with an exhaust pipe, the high-pressure pump is connected with an inflation pipe, valves are arranged on the inflation pipe and the exhaust pipe, and a pressure gauge is further arranged on the inflation pipe.
3. The underwater surface soil body penetration strength testing device according to claim 2, characterized in that: the universal meter is also arranged on the ship body, the electrode bar is of a hollow structure, and a lead connected with the electrode plate on the electrode bar penetrates out from the upper end through an inner hole of the electrode bar.
4. The underwater surface soil body penetration strength testing device according to claim 1, characterized in that: the upper end of the pressure cylinder is fixedly connected with a pair of lifting rings used for connecting a rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120921709.0U CN215414888U (en) | 2021-04-30 | 2021-04-30 | Testing device for penetration strength of underwater surface soil body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120921709.0U CN215414888U (en) | 2021-04-30 | 2021-04-30 | Testing device for penetration strength of underwater surface soil body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215414888U true CN215414888U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120921709.0U Active CN215414888U (en) | 2021-04-30 | 2021-04-30 | Testing device for penetration strength of underwater surface soil body |
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| CN (1) | CN215414888U (en) |
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2021
- 2021-04-30 CN CN202120921709.0U patent/CN215414888U/en active Active
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