CN112666060A - Penetration tester for researching soil body penetration destruction characteristics - Google Patents
Penetration tester for researching soil body penetration destruction characteristics Download PDFInfo
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- CN112666060A CN112666060A CN202011500593.XA CN202011500593A CN112666060A CN 112666060 A CN112666060 A CN 112666060A CN 202011500593 A CN202011500593 A CN 202011500593A CN 112666060 A CN112666060 A CN 112666060A
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- cylinder
- flange
- side walls
- penetration
- soil
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- 239000002689 soil Substances 0.000 title claims abstract description 48
- 230000035515 penetration Effects 0.000 title claims abstract description 33
- 230000006378 damage Effects 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000035699 permeability Effects 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000011160 research Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 229920005372 Plexiglas® Polymers 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 239000012466 permeate Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention discloses a penetration tester for researching the penetration destruction characteristics of soil, which comprises: the device comprises a first cylinder, a second cylinder, a base, supporting legs and a porous steel plate, wherein the first cylinder is arranged on the base, the supporting legs and the porous steel plate are sequentially connected from bottom to top, the cross section of the porous steel plate is matched with that of the first cylinder, and the first cylinder is connected with the second cylinder positioned at the top end of the first cylinder; pressure measuring holes are formed in the side walls of the first cylinder and the second cylinder, a water inlet is formed in the lower portion of one side wall of the first cylinder, a water outlet is formed in the upper portion of two side walls of the second cylinder, and a cover plate is connected to the top end of the second cylinder in a sealing mode. The invention can simultaneously measure the permeability coefficient of soil and research the permeability destruction characteristic, and can simulate the permeability and the permeability destruction phenomenon of the soil body under the condition of indoor test. The lower part of one side wall of the cylinder is provided with a water inlet, the upper parts of the two side walls of the cylinder are provided with water outlets, water permeates from bottom to top in the whole permeation process, and the in-situ soil body permeation phenomenon can be simulated really.
Description
Technical Field
The invention belongs to the technical field of geotechnical tests, and particularly relates to a penetration tester for researching the penetration destruction characteristics of soil.
Background
The permeability of soil means that soil has properties of allowing fluid such as water to pass through, and is important physical and mechanical properties and engineering properties, like strength and deformability. The strength of the permeability of soil is generally measured by permeability coefficient, and the permeability coefficient has important influence on engineering problems such as slope stability, soil consolidation, safety of a river bank and a dam body and the like. At present, the research on the permeability of soil is generally based on Darcy's law, and the commonly-made indoor permeability tests include a constant head test and a variable head test.
The dam break reasons of the earth and rockfill dam caused by water disasters mainly comprise overtopping damage and seepage damage (soil flow, piping and the like), the mechanical mechanism of the seepage damage is the result of water-soil interaction, and when the dragging force of water flow breaks the static balance of soil particles, the movement of water flow containing the soil particles can be formed in the soil body, so that the overall stability of the soil body is further influenced. Therefore, the research on the permeability coefficient and the permeability failure characteristic of the soil body is necessary.
Therefore, it is an urgent need of those skilled in the art to develop a penetration tester capable of simulating the penetration and penetration destruction phenomena of soil under the condition of indoor test, measuring the permeability coefficient of soil and researching the penetration destruction characteristics.
Disclosure of Invention
In view of the above, the invention provides a penetration tester capable of simultaneously measuring the permeability coefficient of soil and researching the penetration destruction characteristics, which can simulate the penetration and penetration destruction phenomena of soil under the condition of indoor tests.
The technical scheme is as follows:
a penetration tester for researching the penetration destruction characteristics of soil mass comprises: the device comprises a first cylinder, a second cylinder, a base, supporting legs and a porous steel plate, wherein the first cylinder is arranged on the base, the supporting legs and the porous steel plate are sequentially connected from bottom to top, the cross section of the porous steel plate is matched with that of the first cylinder, and the first cylinder is connected with the second cylinder positioned at the top end of the first cylinder;
pressure measuring holes are formed in the side walls of the first cylinder and the second cylinder, a water inlet is formed in the lower portion of one side wall of the first cylinder, a water outlet is formed in the upper portion of two side walls of the second cylinder, and a cover plate is connected to the top end of the second cylinder in a sealing mode.
Further, the first cylinder is connected with the second cylinder at the top end of the first cylinder through a flange, the flange comprises a first flange plate and a second flange plate, the top end of the first cylinder is fixedly connected with the first flange plate, the bottom end of the second cylinder is fixedly connected with the second flange plate, and the first flange plate is connected with the second flange plate through bolts.
The adoption of the further beneficial effects is as follows: the flange plate is used for connecting the two organic glass cylinders, so that the test instrument can be conveniently disassembled and assembled.
Furthermore, a first pressure measuring hole is formed in the middle of one side wall of the cylinder, a second pressure measuring hole is formed in the lower portion of the two side walls of the cylinder, and a third pressure measuring hole is formed in the middle of the two side walls of the cylinder.
The adoption of the further beneficial effects is as follows: the pressure measuring holes can be automatically increased or decreased according to test requirements, can be connected with pressure measuring tubes to observe test phenomena conveniently, and can also be connected with pressure sensors to record pressure data accurately conveniently.
Further, the porous steel plate is made of a steel wire mesh.
The adoption of the further beneficial effects is as follows: the wire net is water-permeable and blocks that soil particles fall into the lower part hydroecium, if more tiny soil particles have been piled up to steel sheet lower part hydroecium, can take out porous steel sheet and clearance with the support frame.
Further, the side walls of the first cylinder and the second cylinder are made of transparent organic glass.
The adoption of the further beneficial effects is as follows: the wall of the cylinder is transparent, and the phenomenon of infiltration damage on the surface of the soil body can be clearly observed in an infiltration test.
The invention has the beneficial effects that: the penetration tester for researching the soil body penetration destruction characteristics can simultaneously measure the penetration coefficient of soil and research the penetration destruction characteristics, and can simulate the penetration and penetration destruction phenomena of the soil body under the condition of indoor tests. The lower part of one side wall of the cylinder is provided with a water inlet, the upper parts of the two side walls of the cylinder are provided with water outlets, water permeates from bottom to top in the whole permeation process, and the in-situ soil body permeation phenomenon can be simulated really.
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 described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a penetration tester for studying the penetration destruction characteristics of soil bodies according to the present invention;
FIG. 2 is a schematic view of a top view of a penetration tester for studying the penetration destruction characteristics of soil according to the present invention;
the pressure measuring device comprises a cylinder I, a cylinder II, a base, 4 supporting legs, 5 porous steel plates, 6 pressure measuring holes, 7 water inlets, 8 water outlets, 9 cover plates, 10 flanges, 11 flange I, 12 flange II, 13 bolts, 14 pressure measuring holes I, 15 pressure measuring holes II and 16 pressure measuring holes III.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention 1. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
A penetration tester for researching the penetration destruction characteristics of soil mass comprises: the device comprises a first cylinder 1, a second cylinder 2, a base 3, supporting legs 4 and a porous steel plate 5, wherein the first cylinder 1 is arranged on the base 3, the supporting legs 4 and the porous steel plate 5 are sequentially connected from bottom to top, the cross section of the porous steel plate 5 is matched with that of the first cylinder 1, and the first cylinder 1 is connected with the second cylinder 2 positioned at the top end of the first cylinder;
In one embodiment, the cylinder 1 and the cylinder 2 at the top end thereof are connected through a flange 10, the flange 10 comprises a flange plate 11 and a flange plate 12, the top end of the cylinder 1 is fixedly connected with the flange plate 11, the bottom end of the cylinder 2 is fixedly connected with the flange plate 12, and the flange plate 11 and the flange plate 12 are connected through bolts 13.
In one embodiment, the middle of the side wall of the first cylinder 1 is provided with a first pressure measuring hole 14, the lower part of the side wall of the second cylinder 2 is provided with a second pressure measuring hole 15, and the middle of the side wall of the second cylinder 2 is provided with a third pressure measuring hole 16.
In one embodiment, the perforated steel sheet 5 is made of steel wire mesh.
In one embodiment, the side walls of the cylinders one 1 and two 2 are made of transparent plexiglas.
The use method of the penetration tester for researching the penetration destruction characteristics of the soil body comprises the following steps:
the water chamber is arranged between the base 3 and the porous steel plate 5 in the barrel, the lower part from the porous steel plate 5 to the water outlet 8 is a soil body chamber, water is supplied for the permeameter by a water supply system capable of controlling a water head, the water inlet 7 is connected with the water supply system through a water pipe with a valve, the water outlet 8 is connected with an iron barrel for recovering water flowing out of the permeameter through a water pipe, soil body sample loading is needed to be carried out on the soil body chamber before the permeameter test, the soil body needs to be compacted after each sample loading is carried out at a certain height in the sample loading process, the compaction degree needs to be kept consistent every time, after the soil body sample loading is completed, the water supply valve is opened, the test is started, when the water inlet 7 starts to feed water, water flows into the water. Under the condition that the water supply head is low, recording the head height of each pressure measuring hole, under the condition that the head height of each pressure measuring hole is stable and unchanged, continuously measuring for three times and recording the volume of water flowing out of the water outlet 8 in unit time, and if the measured volumes of the three times are the same, calculating to obtain the permeability coefficient of the soil body; under the condition that the water supply head is high, the height of the water supply head is gradually increased, the height of the water head of the pressure measuring pipe and the seepage phenomenon of the side surface of the soil sample are observed and recorded until the side surface of the soil body and the upper surface of the soil body generate obvious seepage damage phenomena, and the test simulation of the soil body seepage damage phenomena is realized.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The utility model provides a research soil body infiltration destruction characteristic's penetration test appearance which characterized in that includes: the device comprises a first cylinder, a second cylinder, a base, supporting legs and a porous steel plate, wherein the first cylinder is arranged on the base, the supporting legs and the porous steel plate are sequentially connected from bottom to top, the cross section of the porous steel plate is matched with that of the first cylinder, and the first cylinder is connected with the second cylinder positioned at the top end of the first cylinder;
pressure measuring holes are formed in the side walls of the first cylinder and the second cylinder, a water inlet is formed in the lower portion of one side wall of the first cylinder, a water outlet is formed in the upper portion of the two side walls of the second cylinder, and a cover plate is connected to the top end of the second cylinder in a sealing mode.
2. The permeability tester for studying the permeability failure characteristics of the soil body according to claim 1, wherein the first cylinder is connected with the second cylinder at the top end thereof through a flange, the flange comprises a first flange and a second flange, the top end of the first cylinder is fixedly connected with the first flange, the bottom ends of the second cylinder are fixedly connected with the second flange, and the first flange and the second flange are connected through bolts.
3. The infiltration tester for studying infiltration collapse characteristics of soil mass according to claim 1, wherein a first pressure measuring hole is arranged in the middle of one side wall of the cylinder, a second pressure measuring hole is arranged at the lower part of the two side walls of the cylinder, and a third pressure measuring hole is arranged in the middle of the two side walls of the cylinder.
4. The apparatus of claim 1, wherein the porous steel plate is made of steel wire mesh.
5. The apparatus of claim 1, wherein the side walls of the first and second cylinders are made of transparent plexiglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011500593.XA CN112666060A (en) | 2020-12-17 | 2020-12-17 | Penetration tester for researching soil body penetration destruction characteristics |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011500593.XA CN112666060A (en) | 2020-12-17 | 2020-12-17 | Penetration tester for researching soil body penetration destruction characteristics |
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| Publication Number | Publication Date |
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| CN112666060A true CN112666060A (en) | 2021-04-16 |
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| CN202011500593.XA Pending CN112666060A (en) | 2020-12-17 | 2020-12-17 | Penetration tester for researching soil body penetration destruction characteristics |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109239A (en) * | 2021-05-18 | 2021-07-13 | 江西理工大学 | Improved multifunctional earth pillar penetration experiment device |
| CN113514629A (en) * | 2021-05-19 | 2021-10-19 | 北京航空航天大学 | Method for measuring unsaturated soil matrix suction based on relative humidity of soil body pore gas |
| CN117538237A (en) * | 2024-01-10 | 2024-02-09 | 中建三局集团有限公司 | Water seepage and adsorption test system for recycled concrete test piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201876408U (en) * | 2010-11-02 | 2011-06-22 | 同济大学 | Multifunctional permeameter |
| CN203965428U (en) * | 2014-06-12 | 2014-11-26 | 中国建筑股份有限公司 | Native test unit is flowed in a kind of piping |
| CN104831674A (en) * | 2015-03-12 | 2015-08-12 | 黄河水利委员会黄河水利科学研究院 | Seepage failure hydraulic model |
| JP3220586U (en) * | 2018-02-12 | 2019-03-22 | 浙江大学Ｚｈｅｊｉａｎｇ Ｕｎｉｖｅｒｓｉｔｙ | Equipment for measuring the hydraulic conductivity of various types of earth and sand |
| CN109975192A (en) * | 2019-04-22 | 2019-07-05 | 中南大学 | The infiltration measuring device and method of different osmotic gradient lower leaf sand transition process |
| CN110082275A (en) * | 2019-05-22 | 2019-08-02 | 陕西秦海检测科技有限公司 | It is large-scale simple with the vertical seepage deformation tester of coarse-grained soil and test method |
| CN210803220U (en) * | 2019-08-27 | 2020-06-19 | 华南理工大学 | Constant head's penetration test device |
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2020
- 2020-12-17 CN CN202011500593.XA patent/CN112666060A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201876408U (en) * | 2010-11-02 | 2011-06-22 | 同济大学 | Multifunctional permeameter |
| CN203965428U (en) * | 2014-06-12 | 2014-11-26 | 中国建筑股份有限公司 | Native test unit is flowed in a kind of piping |
| CN104831674A (en) * | 2015-03-12 | 2015-08-12 | 黄河水利委员会黄河水利科学研究院 | Seepage failure hydraulic model |
| JP3220586U (en) * | 2018-02-12 | 2019-03-22 | 浙江大学Ｚｈｅｊｉａｎｇ Ｕｎｉｖｅｒｓｉｔｙ | Equipment for measuring the hydraulic conductivity of various types of earth and sand |
| CN109975192A (en) * | 2019-04-22 | 2019-07-05 | 中南大学 | The infiltration measuring device and method of different osmotic gradient lower leaf sand transition process |
| CN110082275A (en) * | 2019-05-22 | 2019-08-02 | 陕西秦海检测科技有限公司 | It is large-scale simple with the vertical seepage deformation tester of coarse-grained soil and test method |
| CN210803220U (en) * | 2019-08-27 | 2020-06-19 | 华南理工大学 | Constant head's penetration test device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109239A (en) * | 2021-05-18 | 2021-07-13 | 江西理工大学 | Improved multifunctional earth pillar penetration experiment device |
| CN113514629A (en) * | 2021-05-19 | 2021-10-19 | 北京航空航天大学 | Method for measuring unsaturated soil matrix suction based on relative humidity of soil body pore gas |
| CN117538237A (en) * | 2024-01-10 | 2024-02-09 | 中建三局集团有限公司 | Water seepage and adsorption test system for recycled concrete test piece |
| CN117538237B (en) * | 2024-01-10 | 2024-03-29 | 中建三局集团有限公司 | Water seepage and adsorption test system for recycled concrete test piece |
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Application publication date: 20210416 |