CN205898625U - Measure device of on --spot different degree of depth stratum department osmotic coefficient - Google Patents
Measure device of on --spot different degree of depth stratum department osmotic coefficient Download PDFInfo
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- CN205898625U CN205898625U CN201620619569.0U CN201620619569U CN205898625U CN 205898625 U CN205898625 U CN 205898625U CN 201620619569 U CN201620619569 U CN 201620619569U CN 205898625 U CN205898625 U CN 205898625U
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- communicating pipe
- water
- injecting tank
- water injecting
- pile crown
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Abstract
The utility model provides a measure device of on - -spot different degree of depth stratum department osmotic coefficient, includes water injection case, communicating pipe, bearing structure, pile head, pressure device and the pressure measurement device at top, the water injection case install bearing structure's top, the interior bottom of water injection case is equipped with and is used for determining hydraulic pressure measurement device, the top of water injection case is furnished with and is used for adjusting the hydraulic pressure device of water injection incasement, top water inlet and the sealed intercommunication of notes water tank inner cavity of communicating pipe, the bottom delivery port of communicating pipe passes bearing structure and later communicates with the pile head is sealed, pile head from the top down is divided into and is used for with construction section, the interlude of communicating pipe spiro union and is used for inserting the corresponding intraformational toper tip in ground of ground that awaits measuring, the interlude external conjugate diameter of pile head be less than the external conjugate diameter of communicating pipe, and interlude circumference be equipped with with the water outlet hole of pile head inner chamber intercommunication. The beneficial effects of the utility model are that: can fully react the place truly the circumstances of permeating, can truly react soil body truth and easy operation.
Description
Technical field
This utility model is related to a kind of device of infiltration coefficient at measure field different depth stratum.
Background technology
Infiltration coefficient is an index of combined reaction soil body penetration ability, and the correct determination of its numerical value has to infiltration calculation
Very important meaning.Its numerical value can obtain in the indoor measurement of experiment it is also possible to direct measurement at the construction field (site).
The measuring method of infiltration coefficient is divided into hydrostatic head method and variable water level method.The water permeable ability of sandy soil is stronger, typically adopts
Use hydrostatic head method.For cohesive soil, because its water penetration is poor, typically adopt variable water level method.Laboratory test needs to prepare soil sample,
Larger to native original state structural deterioration, lead to measured result to differ greatly with actual value.In order to obtain with actual value more
Close result, can carry out in-site measurement now.
Mostly existing measurement apparatus are to disclose surface infrastructure, make water body permeable soil, then calculate with Darcy's law
To numerical value.Measured result is only the permeability coefficient of earth's surface one specified point it is impossible to fully react the true infiltration in this place
Situation.
The Chinese patent of Publication No. 103091229a discloses a kind of varying head segmentation gas permeability measurement equipment and survey
Amount method.This equipment includes precipitation head slug test device, double thromboembolism plugging device and probe.Need to be existing during measurement infiltration coefficient
Hole to specified stratum in field, then the extremely specified stratum of decentralization probe, connects device, block one section by double thromboembolism plugging devices
Boring.By slug test device to block section water filling, record the water yield over time, obtain infiltration coefficient through conversion.
The Chinese patent of Publication No. 103344542a discloses the device that a kind of variable water level method measures infiltration coefficient.Should
Device includes the first cylinder, the second cylinder and overflow groove.First barrel diameter is much larger than the second barrel diameter, its lower end and second
Cylinder upper end is connected, and is provided with and fills out specimen chamber in the second cylinder.During measurement, current flow to the second cylinder by the first cylinder, further
Penetrate through and fill out specimen chamber and flow to overflow launder.The flow of record seepage flow and time, infiltration coefficient is calculated to obtain by Darcy's law.
The Chinese patent of Publication No. 103868838a discloses a kind of measuring system of soil body osmotic coefficient, comprising: fill out
Subsystem, feed flow subsystem and temperature control subsystem.During measurement, first load soil sample to be measured in subsystem filling out, then utilize
The temperature of temperature control subsystem controls whole system, then provide liquid to flow through soil sample to be measured by feed flow subsystem, calculated by Darcy's law
Obtain the infiltration coefficient of soil sample to be measured.
The patent of Publication No. 103091229a is on-site testing device, but because its structure is not sufficiently stable, sealing effect
It is difficult to ensure that, measurement result deviation is larger；The patent of Publication No. 103344542a and the patent of Publication No. 103868838a
It is indoor test device, acquired results can not reflect the truth of the soil body.In sum, for solving disadvantages described above, do
Go out following improvement.
Content of the invention
This utility model is directed to current on-site measurement infiltration coefficient and there is measured result only earth's surface one specified point
Permeability coefficient it is impossible to fully react the true infiltration situation in this place, acquired results can not reflect the true feelings of the soil body
The problem of condition it is proposed that one kind can fully react place truly permeate situation, can actual response soil body truth and operating
The device of infiltration coefficient at simple measure field different depth stratum.
At a kind of measure field different depth stratum described in the utility model infiltration coefficient device it is characterised in that:
Including the water injecting tank at top, communicating pipe, supporting construction, pile crown, pressue device and pressure tester, described water injecting tank is arranged on institute
The top of the supporting construction stated, the inner bottom part of described water injecting tank equipped with the pressure tester for measuring hydraulic pressure, described water filling
The top of case is furnished with the pressue device for adjusting hydraulic pressure in water injecting tank；The top water inlet of described communicating pipe and described note
Water tank cavity sealing connection, the bottom outlet of described communicating pipe is close with described pile crown after passing through described supporting construction
Envelope connection；Described pile crown be divided into from top to bottom for the construction section being spirally connected communicating pipe, interlude and being used for insert to be measured
Ground corresponding ground in the layer taper tip, the interlude overall diameter of described pile crown is less than the overall diameter of described communicating pipe,
And described interlude is circumferentially with the water outlet through hole with pile crown inner space.
The two ends of described communicating pipe are equipped with external screw thread, described communicating pipe top with water injecting tank bottom outlet spiral shell
Connect, the described bottom of communicating pipe is spirally connected with the construction section of described pile crown, and described communicating pipe and described water injecting tank
Junction, the junction of described communicating pipe and described pile crown be furnished with the rubber ring for sealing.
The length of described communicating pipe is adjusted according to the depth on ground stratum to be measured.
Described supporting construction adopts bowl fastening type communicating pipe scaffold.
It is provided with the scale for measuring water level in described water injecting tank.
The method of infiltration coefficient at a kind of measure field different depth stratum described in the utility model, walks including following
Rapid:
1) the mounted in advance communicating pipe with pile crown is inserted ground stratum to be measured；
2) it is filled to specified location by water injecting tank；
3) apply pressure p to the water in water injecting tank, record the time t simultaneously1With water surface elevation h1, t1Unit is the second；h1Unit
For cm；P unit pa；
4) through t postscript after a while be time t2, write down now liquid level h2, then through t time period postscript be t3,
Liquid level is h3, the rest may be inferred obtains tn,hn, wherein n is positive integer；t2、t3、…、tnUnit is the second；h2、h3…、hnUnit
For cm；
5) measure the infiltration coefficient of deeper soil: take out the water having been injected into, unload water injecting tank, continue to lengthen for even
The communicating pipe of pile extension head, repeat step 2)～5)；
6) according to the data obtaining by packer permeability test calculation permeability coefficient, each stage osmotic coefficient k can be respectively obtained1、
k2...kn, wherein n is positive integer；
V is the water yield (ml) of press-in, and d is communicating pipe external diameter (cm), and p is impressed pressure (pa), and δ t is time interval
(second)；
7) calculate average infiltration coefficientWherein n is positive integer.
Water injecting tank in this utility model is used for filling water and bears hydraulic pressure, records the change of water surface elevation, measurement is the most simultaneously
Whole discharge；It is used for communicating pipe squeezing soil, simultaneously as crossing aquaporin, water is delivered to specified stratum from top；Sealing rubber
Cushion rubber is for sealing connecing between interface and communicating pipe and pile crown between the interface between communicating pipe, communicating pipe and water injecting tank
Mouthful, prevent leak, improve the precision of measurement；Supporting construction is used for fixing the position of water injecting tank and whole device, with holding meanss
Stability in measurement process, improves the degree of accuracy of measurement result；Pile crown is connected to connection pipe end blend rubber circle sealing
Good, pile crown front end is taper in order to be pressed in soil.Pile crown mid portion diameter is less than connection pipe diameter, has water outlet thereon little
Hole, water body can outwards be overflowed by these apertures and be contacted thus permeating with soil；Described pressue device is arranged on water filling
On case, for applying pressure to accelerate seepage velocity in cohesive soil for the water to the water in water injecting tank, thus when reducing test
Between；Pressure tester is arranged in water injecting tank, for measuring the pressure suffered by water body in water injecting tank.
The beneficial effects of the utility model are: can fully react place truly permeate situation, can the actual response soil body true
Situation and simple to operate；Communicating pipe segmentation is threaded connection, to measure the infiltration coefficient on different depth stratum.Steel pipe adopts
Static pressure method is pressed into stratum.
Brief description
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structure chart of communicating pipe of the present utility model.
Fig. 3 is the connection figure of communicating pipe of the present utility model and pile crown.
Fig. 4 is the structure chart of pile crown of the present utility model.
Specific embodiment
Further illustrate this utility model below in conjunction with the accompanying drawings
Referring to the drawings:
The device of infiltration coefficient at a kind of embodiment 1 measure field different depth stratum described in the utility model, including
The water injecting tank 1 at top, communicating pipe 2, supporting construction 3, pile crown 4, pressue device 6 and pressure tester 5, described water injecting tank 1 is installed
At the top of described supporting construction 3, the inner bottom part of described water injecting tank 1 is equipped with the pressure tester 5 for measuring hydraulic pressure, described
The top of water injecting tank 1 be furnished with the pressue device 6 for adjusting hydraulic pressure in water injecting tank；The top water inlet of described communicating pipe 2
Connect with described water injecting tank 1 bore seal, after the bottom outlet of described communicating pipe 2 passes through described supporting construction 3
Connect with described pile crown 4 sealing；Described pile crown 4 be divided into from top to bottom for be spirally connected with communicating pipe 2 construction section, interlude
And it is used for inserting ground corresponding ground to be measured in the layer taper tip, the interlude overall diameter of described pile crown 4 is less than described
Communicating pipe 2 overall diameter, and described interlude is circumferentially with the water outlet through hole with pile crown 4 inner space.
The two ends of described communicating pipe 2 are equipped with external screw thread, described communicating pipe 2 top with water injecting tank 1 bottom outlet
It is spirally connected, the described bottom of communicating pipe 2 is spirally connected with the construction section of described pile crown 4, and described communicating pipe 2 and described note
The junction of the junction of water tank 1, described communicating pipe 2 and described pile crown 4 is furnished with the rubber ring 7 for sealing.
Described supporting construction 3 adopts bowl fastening type communicating pipe scaffold.
It is provided with the scale 11 for measuring water level in described water injecting tank 1.
The method of infiltration coefficient at a kind of embodiment 2 measure field different depth stratum described in the utility model, including
Following steps:
1) measuring apparatus are assembled: pile crown was docked with communicating pipe, seam seal with elastometic washer；To be depressed into communicating pipe specified
Depth stratum；If connection length of tube not can lengthen, seam is equally with seal with elastometic washer；Supporting construction and water injecting tank are installed,
And pressure tester is installed in water injecting tank, in water filling box top, pressue device is installed；By the mounted in advance connection with pile crown
Pipe inserts ground stratum to be measured；
2) it is filled to specified location by water injecting tank；
3) apply pressure p to the water in water injecting tank, record the time t simultaneously1With water surface elevation h1, t1Unit is the second；h1Unit
For cm；P unit pa；
4) through t postscript after a while be time t2, write down now liquid level h2, then through t time period postscript be t3,
Liquid level is h3, the rest may be inferred obtains tn,hn, wherein n is positive integer；t2、t3、…、tnUnit is the second；h2、h3…、hnUnit
For cm；
5) measure the infiltration coefficient of deeper soil: take out the water having been injected into, unload water injecting tank, continue to lengthen for even
The communicating pipe of pile extension head, repeat step 2)～5)；
6) according to the data obtaining by packer permeability test calculation permeability coefficient, each stage osmotic coefficient k can be respectively obtained1、
k2...kn, wherein n is positive integer；
V is the water yield (ml) of press-in, and d is communicating pipe external diameter (cm), and p is impressed pressure (pa), and δ t is time interval
(second)；
7) calculate average infiltration coefficientWherein n is positive integer.
Test measurement result table
| Press-in water yield v (m^3) | Communicating pipe outside diameter d (m) | Impressed pressure p (n) | Time interval δ t (s) | Osmotic coefficient k (m/s) |
| 0.628 | 0.1 | 98 | 600 | 1.7×10-5 |
| 0.517 | 0.1 | 98 | 600 | 1.4×10-5 |
| 0.236 | 0.1 | 98 | 600 | 6.4×10-6 |
Content described in this specification embodiment is only enumerating of the way of realization to utility model design, and this practicality is new
The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, protection domain of the present utility model also wraps
Include those skilled in the art according to this utility model design it is conceivable that equivalent technologies mean.
Claims (4)
1. at a kind of measure field different depth stratum infiltration coefficient device it is characterised in that: include the water injecting tank, even at top
Siphunculus, supporting construction, pile crown, pressue device and pressure tester, described water injecting tank is arranged on the top of described supporting construction,
The inner bottom part of described water injecting tank is furnished with for adjusting equipped with the pressure tester for measuring hydraulic pressure, the top of described water injecting tank
The pressue device of hydraulic pressure in water injecting tank；The top water inlet of described communicating pipe is connected with described water injecting tank bore seal, institute
The bottom outlet of the communicating pipe stated is connected with described pile crown sealing after passing through described supporting construction；Described pile crown from
Top to bottm it is divided into for inserting ground to be measured corresponding ground in the layer cone with the construction section being spirally connected communicating pipe, interlude and being used for
Shape tip, the interlude overall diameter of described pile crown is less than the overall diameter of described communicating pipe, and described interlude circumference
It is provided with the water outlet through hole with pile crown inner space.
2. as claimed in claim 1 at a kind of measure field different depth stratum infiltration coefficient device it is characterised in that: institute
The two ends of the communicating pipe stated are equipped with external screw thread, and described communicating pipe top is spirally connected with water injecting tank bottom outlet, described company
The bottom of siphunculus is spirally connected with the construction section of described pile crown, and the junction of described communicating pipe and described water injecting tank, institute
The junction of the communicating pipe stated and described pile crown is furnished with the rubber ring for sealing.
3. as claimed in claim 2 at a kind of measure field different depth stratum infiltration coefficient device it is characterised in that: institute
State supporting construction and adopt bowl fastening type communicating pipe scaffold.
4. as claimed in claim 2 at a kind of measure field different depth stratum infiltration coefficient device it is characterised in that: institute
It is provided with the scale for measuring water level in the water injecting tank stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620619569.0U CN205898625U (en) | 2016-06-21 | 2016-06-21 | Measure device of on --spot different degree of depth stratum department osmotic coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620619569.0U CN205898625U (en) | 2016-06-21 | 2016-06-21 | Measure device of on --spot different degree of depth stratum department osmotic coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205898625U true CN205898625U (en) | 2017-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620619569.0U Expired - Fee Related CN205898625U (en) | 2016-06-21 | 2016-06-21 | Measure device of on --spot different degree of depth stratum department osmotic coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205898625U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018239A (en) * | 2016-06-21 | 2016-10-12 | 浙江工业大学 | Method and device for measuring permeability coefficients of stratums at different depths in field |
| CN109629547A (en) * | 2019-01-11 | 2019-04-16 | 中国水利水电科学研究院 | A kind of great burying soil HYDRODYNAMIC CHARACTERISTICS parameter measurement system and method |
| CN113640191A (en) * | 2021-08-13 | 2021-11-12 | 中水淮河规划设计研究有限公司 | Large-size field water injection test device and test method |
| CN114594037A (en) * | 2022-03-30 | 2022-06-07 | 中国水利水电科学研究院 | Method for measuring permeability coefficient of soil material |
-
2016
- 2016-06-21 CN CN201620619569.0U patent/CN205898625U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018239A (en) * | 2016-06-21 | 2016-10-12 | 浙江工业大学 | Method and device for measuring permeability coefficients of stratums at different depths in field |
| CN109629547A (en) * | 2019-01-11 | 2019-04-16 | 中国水利水电科学研究院 | A kind of great burying soil HYDRODYNAMIC CHARACTERISTICS parameter measurement system and method |
| CN109629547B (en) * | 2019-01-11 | 2023-09-08 | 中国水利水电科学研究院 | System and method for measuring hydrodynamic characteristic parameters of large-burial-depth soil |
| CN113640191A (en) * | 2021-08-13 | 2021-11-12 | 中水淮河规划设计研究有限公司 | Large-size field water injection test device and test method |
| CN114594037A (en) * | 2022-03-30 | 2022-06-07 | 中国水利水电科学研究院 | Method for measuring permeability coefficient of soil material |
| CN114594037B (en) * | 2022-03-30 | 2023-07-07 | 中国水利水电科学研究院 | Method for measuring permeability coefficient of soil material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20190621 |