CN205333459U - Characteristic curve of soil moisture survey device of level pressure power - Google Patents
Characteristic curve of soil moisture survey device of level pressure power Download PDFInfo
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- CN205333459U CN205333459U CN201620044266.0U CN201620044266U CN205333459U CN 205333459 U CN205333459 U CN 205333459U CN 201620044266 U CN201620044266 U CN 201620044266U CN 205333459 U CN205333459 U CN 205333459U
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Abstract
The utility model discloses a characteristic curve of soil moisture survey device of level pressure power, include: the dress model machine constructs, tensioner constructs and loading system, and dress model machine structure includes: a dress soil box for splendid attire sample soil, the tensioner structure includes: discharge, one end link to each other with the discharge has a charging pipe of 90 dog -ears, and a vitrified -clay pipe is connected to charging pipe's the other end, the vitrified -clay pipe in the inside sample soil of dress soil box is inserted to the through -hole level, an installation vacuum meter on the discharge. The utility model discloses a characteristic curve of soil moisture survey device of level pressure power simple structure, cost are lower, and convenient operation does not rely on accurate complicated determining instrument in addition, the specially adapted is determined artifical side slope and landfill soil property, through the method of the on -the -spot soil pressure of simulation in the laboratory, has returned to the original condition or shape than high degree ground and has measured on -the -spotly, and the error that environmental factor brought has been avoided to a certain extent to the reliable accurate and measurement accuracy height of measuring result.
Description
Technical field
This utility model relates to a kind of characteristic curve of soil moisture determinator, is specifically related to the characteristic curve of soil moisture determinator of a kind of constant-pressure；Belong to Soil water management and studying technological domain。
Background technology
Characteristic curve of soil moisture is the basic document of Soil water management and research, also referred to as soil characteristic curve or soil pF curve, it describes the relation between soil water potential (soil water suction) and soil water content, it is in the unsaturated situation of soil moisture, the relation curve between soil water content and soil matrix gesture。Characteristic curve of soil moisture not only reflects the moisture content of soil, also indirectly reflects the distribution of soil mesopore。
Earth structure is all fill as construction material with soil to form such as earth dam, earth embankment, road embankment, refuse landfill and embankment side slope etc.。If banketed, moisture content is too low, easily caused by saturated yielding after chance water；Too high other mechanical properties of deterioration being banketed again, whether proper the control of the moisture content that bankets in Practical Project is, is not only related to economic interests, and has influence on construction quality。
In order to ensure enough intensity of banketing, generally requiring compacting filler in construction, the soil pressure that the soil body is subject to is the key factor affecting characteristic curve of soil moisture。But current experimental technique is when the original-pack shape characteristic curve of soil moisture of mensuration original-state soil especially deep layer, very difficult simulated field conditions are measured, and the experimental facilities of traditional measurement characteristic curve of soil moisture is complicated, and price is high, it is unfavorable for popularization and application, haves much room for improvement。
Summary of the invention
For solving the deficiencies in the prior art, the purpose of this utility model is in that to provide a kind of characteristic curve of soil moisture determinator measuring constant-pressure accurate, easy and simple to handle。
In order to realize above-mentioned target, this utility model adopts the following technical scheme that:
A kind of characteristic curve of soil moisture determinator of constant-pressure, including: dress model machine structure, tension mechanism and pressing mechanism, described dress model machine structure includes: for containing the dress soil box of sample soil, described dress soil cassette bottom portion is provided with discharge structure, is provided with a through hole in the middle part of the box side wall of described dress soil box；Described tension mechanism includes: the charging pipe with 90 ° of knuckles that discharge, one end are connected with discharge, the other end of described charging pipe connects a vitrified-clay pipe, described vitrified-clay pipe is horizontally inserted in the sample soil within dress soil box from through hole, and described discharge is installed a vacuum meter；Described pressing mechanism is positioned at above dress model machine structure and applies equivalence soil pressure with the sample soil to dress soil box。
Preferably, aforementioned dress soil box includes: base, the metal ring perisporium being installed on base and be placed in the top permeable stone above sample soil, is additionally provided with bottom permeable stone, and is formed with outlet on base in described base。
Specifically, said base is fixed on testing stand by pin。
It is highly preferred that the external diameter of aforementioned metal annular perisporium is less than the internal diameter of base。
More preferably, aforementioned through-hole place is provided with rubber seal, to optimize the sealing property of dress soil box, it is prevented that leakage soil。
Further, aforementioned pressing mechanism includes: the load beam that the bearing being installed on testing stand is connected by rotating hinge with holder top, the scale pan hanging on load beam free end and weld with load beam add hammer, described in add hammer and apply pressure on the permeable stone of top。
Further, aforementioned rest base is provided with adjusting knob to regulate the height of load beam distance test (DT) platform。
Yet further, aforementioned load beam is provided with level vial bubble instrument。
Further, the free end of aforementioned load beam is formed with some slotted eyes for hanging scale pan, the convenient hanging position that the demand of pressure rationally arranges scale pan according to experiment equidistantly。
Of the present utility model have the beneficial effect that the characteristic curve of soil moisture assay device structures of constant-pressure of the present utility model is simple, less costly, and easy to operate, it is independent of accurate complicated determining instrument；It is particularly well-suited to Artificial Side-slope and refuse landfill soil property are measured, by the method testing lab simulation scene soil pressure, reducing measure field, measurement result is reliably accurate and certainty of measurement is high, avoids the error that environmental factors is brought to a certain extent higher degree。
Accompanying drawing explanation
Fig. 1 is the structural scheme of mechanism of a preferred embodiment of the characteristic curve of soil moisture determinator of a kind of constant-pressure of the present utility model；
Fig. 2 is the structural representation filling model machine structure and tension mechanism in embodiment illustrated in fig. 1。
The implication of accompanying drawing labelling in figure: 1, top permeable stone, 2, sample soil, 3, metal ring perisporium, 4, base, 5, pin, 6, outlet, 7, bottom permeable stone, 8, vitrified-clay pipe, 9, charging pipe, 10, vacuum meter, 11, discharge, 12, add hammer, 13, bearing, 14, adjusting knob, 15, rotating hinge, 16, load beam, 17, slotted eye, 18, level vial bubble instrument, 19, scale pan, 20, counterweight, 21, testing stand。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model done concrete introduction。
The characteristic curve of soil moisture determinator of constant-pressure of the present utility model can in laboratory conditions higher degree ground reduction measure field, it is applicable to Artificial Side-slope and refuse landfill soil property are measured, its structure, referring to Fig. 1, specifically includes that dress model machine structure, tension mechanism and pressing mechanism。
Wherein, dress model machine structure is used for containing sample soil 2, including a dress soil box, is provided with discharge structure in dress soil cassette bottom portion, and fills and be provided with a through hole in the middle part of the box side wall of soil box。Referring to Fig. 2, in the present embodiment, dress soil box specifically includes: base 4, the metal ring perisporium 3 being installed on base 4 and be placed in the top permeable stone 1 above sample soil 2, the external diameter of metal ring perisporium 3 less than the internal diameter of base 4 to facilitate installation, in base 4, it is additionally provided with bottom permeable stone 7, and base 4 is formed with outlet 6 to guarantee smooth draining in experimentation。In test process, base 4 is fixed on testing stand 21 by pin 5。
As shown in Figure 2, tension mechanism includes: the charging pipe 9 with 90 ° of knuckles that discharge 11, one end are connected with discharge 11, the other end of charging pipe 9 connects a vitrified-clay pipe 8, vitrified-clay pipe 8 is horizontally inserted in the sample soil 2 within dress soil box from through hole, in order to ensure sealing property, through hole is provided with rubber seal；Discharge 11 is installed a vacuum meter 10, the relevant information of soil moisture can be obtained by the reading monitored with recording vacuum gauge 10。
Pressing mechanism is positioned at above dress model machine structure and applies equivalence soil pressure with the sample soil 2 to dress soil box。Specifically, referring to Fig. 1, pressing mechanism includes: be installed on the load beam 16 that bearing 13 on testing stand 21 is connected by rotating hinge 15 with bearing 13 top, the scale pan 19 hanging on load beam 16 free end and weld with load beam 16 add hammer 12, add hammer 12 and directly apply pressure on top permeable stone 1。
As it is shown in figure 1, be provided with adjusting knob 14 bottom bearing 13 to regulate the height of load beam 16 distance test (DT) platform 21 and to guarantee that load beam 16 is horizontally disposed with, for test level degree, load beam 16 is provided with level vial bubble instrument 18。
Further, the free end at load beam 16 is also formed with some slotted eyes 17 for hanging scale pan 19, the convenient hanging position that the demand of pressure rationally arranges scale pan 19 according to experiment equidistantly, adds the counterweight 20 of different quality。
In order to be more fully understood that this utility model, below the characteristic curve of soil moisture determinator utilizing this constant-pressure is carried out characteristic curve method for measuring and carries out setting forth as follows:
S1, weighing dress model machine structure gross weight record, be fixed on base 4 on testing stand 21 by pin 5, puts into bottom permeable stone 7, and on bottom permeable stone 7, place a metafiltration paper, contain the sample soil 2 of certain volume, above sample soil 2, place a metafiltration paper, cover top permeable stone 1；
S2, hammer 12 will be added it will be positioned over the center of top permeable stone 1, and be regulated the height of load beam 16 by adjusting knob 14, make level vial bubble instrument 18 level on load beam 16；Calculating on-the-spot former state soil body pressure and the required arm of force of experiment and counterweight 20 mass, select the counterweight 20 of suitable slotted eye 17 position and appropriate mass, hang scale pan 19 and pressurize, after device is stable, fine setting adjusting knob 14, makes level vial bubble instrument 18 placed in the middle；
S3, use thermometer measure room temperature, are measured under 25 DEG C of temperature fields；The moistening 1 angel's sample soil 2 that adds water is saturated；
S4, to after tension mechanism degasification and correction zero-bit, use the bit diameter start bit identical with vitrified-clay pipe 8 diameter to be drilled into sample soil 2 center from through hole, be then horizontally inserted vitrified-clay pipe 8；
S5, shed the fixing pin 5 of load and device pedestal 4, weigh sample containing device gross weight record, retighten device, by original position pressurization leveling load beam 16；
S6, every 12h record vacuum meter 10 reading and weigh sample containing device quality by above-mentioned steps S5, till vacuum meter 10 reading no longer rises or reaches maximum range；
S7, shed device, take out sample soil 2 and also dry, measure sample soil 2 dry weight and installation weight, calculate soil moisture content and the matric potential in each stage, obtain the characteristic curve of soil moisture of drying。
To sum up, the characteristic curve of soil moisture assay device structures of constant-pressure of the present utility model is simple, less costly, and easy to operate, is independent of accurate complicated determining instrument；It is particularly well-suited to Artificial Side-slope and refuse landfill soil property are measured, by the method testing lab simulation scene soil pressure, reducing measure field, measurement result is reliably accurate and certainty of measurement is high, avoids the error that environmental factors is brought to a certain extent higher degree。
Of the present utility model ultimate principle, principal character and advantage have more than been shown and described。Skilled person will appreciate that of the industry, above-described embodiment does not limit this utility model in any form, and all employings are equal to the technical scheme that the mode of replacement or equivalent transformation obtains, and all fall within protection domain of the present utility model。
Claims (9)
1. the characteristic curve of soil moisture determinator of a constant-pressure, it is characterized in that, including: dress model machine structure, tension mechanism and pressing mechanism, described dress model machine structure includes: for containing the dress soil box of sample soil, described dress soil cassette bottom portion is provided with discharge structure, is provided with a through hole in the middle part of the box side wall of described dress soil box；Described tension mechanism includes: the charging pipe with 90 ° of knuckles that discharge, one end are connected with discharge, the other end of described charging pipe connects a vitrified-clay pipe, described vitrified-clay pipe is horizontally inserted in the sample soil within dress soil box from through hole, and described discharge is installed a vacuum meter；Described pressing mechanism is positioned at above dress model machine structure and applies equivalence soil pressure with the sample soil to dress soil box。
2. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to claim 1, it is characterized in that, described dress soil box includes: base, the metal ring perisporium being installed on base and be placed in the top permeable stone above sample soil, it is additionally provided with bottom permeable stone in described base, and base is formed outlet。
3. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to claim 2, it is characterised in that described base is fixed on testing stand by pin。
4. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to claim 2, it is characterised in that the external diameter of described metal ring perisporium is less than the internal diameter of base。
5. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to claim 2, it is characterised in that described through hole is provided with rubber seal。
6. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to any one of claim 2-5, it is characterized in that, described pressing mechanism includes: the load beam that the bearing being installed on testing stand is connected by rotating hinge with holder top, the scale pan hanging on load beam free end and weld with load beam add hammer, described in add hammer and apply pressure on the permeable stone of top。
7. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to claim 6, it is characterised in that described rest base is provided with adjusting knob to regulate the height of load beam distance test (DT) platform。
8. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to claim 6, it is characterised in that described load beam is provided with level vial bubble instrument。
9. the characteristic curve of soil moisture determinator of a kind of constant-pressure according to claim 6, it is characterised in that the free end of described load beam is formed with some slotted eyes for hanging scale pan equidistantly。
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| CN201620044266.0U CN205333459U (en) | 2016-01-18 | 2016-01-18 | Characteristic curve of soil moisture survey device of level pressure power |
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| CN201620044266.0U CN205333459U (en) | 2016-01-18 | 2016-01-18 | Characteristic curve of soil moisture survey device of level pressure power |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527190A (en) * | 2016-01-18 | 2016-04-27 | 江苏圣泰环境科技股份有限公司 | Device and method for determining soil water characteristic curve under constant pressure |
| CN108037036A (en) * | 2017-11-28 | 2018-05-15 | 东南大学 | The device and its measuring method of coral growth speed in a kind of monitoring seawater |
| CN108896402A (en) * | 2018-04-23 | 2018-11-27 | 江苏省水利科学研究院 | A kind of device of soil moisture and pressure test |
-
2016
- 2016-01-18 CN CN201620044266.0U patent/CN205333459U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527190A (en) * | 2016-01-18 | 2016-04-27 | 江苏圣泰环境科技股份有限公司 | Device and method for determining soil water characteristic curve under constant pressure |
| CN108037036A (en) * | 2017-11-28 | 2018-05-15 | 东南大学 | The device and its measuring method of coral growth speed in a kind of monitoring seawater |
| CN108037036B (en) * | 2017-11-28 | 2020-03-31 | 东南大学 | Device for monitoring growth rate of coral in seawater and measuring method thereof |
| CN108896402A (en) * | 2018-04-23 | 2018-11-27 | 江苏省水利科学研究院 | A kind of device of soil moisture and pressure test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device and method for determining soil water characteristic curve under constant pressure Effective date of registration: 20190722 Granted publication date: 20160622 Pledgee: City Branch of Jiangsu Zijin Rural Commercial Bank Co., Ltd. Pledgor: JIANGSU SENTAY ENVIRONMENTAL SCIENCE AND TECHNOLOGY CO., LTD. Registration number: 2019320000351 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |