CN107421847A - A kind of total suction real-time measurement apparatus of unsaturation soil layer and its measuring method - Google Patents
A kind of total suction real-time measurement apparatus of unsaturation soil layer and its measuring method Download PDFInfo
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- CN107421847A CN107421847A CN201710347849.XA CN201710347849A CN107421847A CN 107421847 A CN107421847 A CN 107421847A CN 201710347849 A CN201710347849 A CN 201710347849A CN 107421847 A CN107421847 A CN 107421847A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
Abstract
The invention discloses a kind of total suction real-time measurement apparatus of unsaturation soil layer and its measuring method, including device outer tube, rubber pneumatic bag, interior transfer tube and electronics hygrograph, pass through the air of measurement soil layer section in rubber pneumatic bag sealing drilling, with the relative humidity after hygrometer method measurement soil layer balance, earth's surface is real-time transmitted to by data wire to be handled, and total suction of soil layer is calculated using Kelvin equation.The arrangement achieves the real-time monitoring to the total suction of unsaturation soil layer, and provide can expansion type interface, can simultaneously multiple different layers positions are measured.In the case where not destroying soil layer former state feature, measuring speed is accelerated, improves measurement accuracy.There is larger promotional value with improving unsaturation soil layer suction measurement efficiency to improving unsaturated soil area engineering investigation technique using the invention device.
Description
Technical field
The invention belongs to soil layer fields of measurement, the total suction real-time measurement apparatus of more particularly to a kind of unsaturation soil layer and its survey
Amount method.
Background technology
In past over half a century, the rapid development of saturation soil mechanics theory, and in the every field of Geotechnical Engineering
It is widely used, but people lack enough understanding for the theory and practice of unsaturated soil.Soil saturation with it is non-
Saturation state engineering properties has very big difference.In our Practical Project, what people faced is mostly unsaturation
The soil of form, such as base pit engineering, subgrade engineering, slope project and environmental project, all can be related to unsaturated soil in a certain respect
Or many characteristics.
Compared with saturated soil, unsaturated soil in addition to by three phase compositions such as solid particle, pore water, hole gas, it
The shrink film formed on liquid-gas interface considers as the 4th phase, and matric suction is generated on interface, therefore, relevant
The research of unsaturated soil is also just closely tied to matric suction and deployed.Research shows, the total suction of the soil body by matric suction with
Osmotic suction forms, and osmotic suction is smaller compared to matric suction proportion in total suction, will can ooze under normal circumstances
Saturating suction is ignored, and now total suction of the soil body is approximately equal to matric suction.
The total suction of hygrometer method calculating unsaturated soil is more ripe, phase when reaching balance by measuring unsaturation soil sample
To humidity, corresponding total suction can be calculated using Kelvin equation：
In formula, ψtFor total suction (kPa) of soil, R is argoshield constant (8.314J/ (molK)), T thermodynamic temperatures
(K), vwnIt is the specific volume (m of water3/ kg), ωiIt is the molal weight (18.016kg/mol) of vapor, uvIt is point of hole vapor
Press (kPa), uvnIt is the saturated vapour pressure (kPa) of Free water at identical temperature.Because relative humidity RH is equal to uv/uv0, more than
Formula can rewrite as follows：
At present, the research of domestic unsaturated soils theory remains in laboratory stage, lacks the survey in situ of suction measurement
Trial assembly is put, and directly has the drawbacks of larger in in-site measurement using the method in laboratory：Measurement efficiency is low, measurement range has
Limit, operation difficulty are larger etc., it is difficult to meet growing engineering demand.
The content of the invention
The present invention proposes a kind of total suction real-time measurement apparatus of unsaturation soil layer and its measuring method, it is intended that
Overcome in the prior art the total suction measurement efficiency of unsaturation soil layer it is low, the problem of operation difficulty is larger.
A kind of total suction real-time measurement apparatus of unsaturation soil layer, including device outer tube 1, rubber pneumatic bag 2, interior transfer tube 3 with
And electronics hygrograph 4, the interior transfer tube 3 are nested in device outer tube 1；
Described device outer tube 1 is setting symmetrical above and below, is sequentially provided with interior room 6, middle room 8 and lower interior room 7, is set between each room
Sealing dividing plate 10 is equipped with, uses and is detachably connected between upper interior room and lower interior room and middle room；Wherein, upper interior room and lower interior outside
Provided with rubber pneumatic bag fixing groove 15, rubber pneumatic bag is installed in rubber pneumatic bag fixing groove, and between rubber pneumatic bag and interior transfer tube
The air inlet pipe 21 being communicated with, through hole 12 is offered on middle chamber outer wall；
An electronics hygrograph 4 is respectively provided with upper interior room and lower interior room, the moisture probe 14 of electronics hygronom passes through
Dividing plate 10 puts in middle room 8, and the data wire of electronics hygronom is connected along inside interior transfer tube with external instrument.
Further, the upper and lower ends of described device outer tube and interior transfer tube are equipped with hickey.
Further, the rubber pneumatic bag fixing groove is circle shape groove.
Further, including at least the total suction real-time measurement apparatus of two sets of unsaturation soil layers, screw thread is passed through between neighboring devices
Interface connects；Realize the measurement simultaneously to multiple stratum.
A kind of measuring method that the total suction of unsaturation soil layer is carried out using above-mentioned device, is comprised the following steps：
Step 1：Two mini-B data wires are passed through from the data string hole on interior transfer tube respectively, T-shaped interface end is stayed
In the upper interior room and lower interior room of the device outer tube residing for interior transfer tube, the USB ends of mini-B data wires are from the upper of interior transfer tube
Take out at end；
Step 2：Debugging recording instrument；
Two data lines are connected with same computer respectively by USB port, open hygrograph, and plug T
Type interface, the software that recorder is supporting on computer is opened, is debugged, after computer has begun to record data, pulled out respectively
The interface of data wire, afterwards recorder remain working condition；
Step 3：Rubber pneumatic bag is installed；
By in interior transfer tube insertion apparatus outer tube, two rubber pneumatic bags are arranged on to the rubber of upper interior room and lower interior outside
On bladder retaining slot, by air inlet pipe through the aperture in rubber pneumatic bag fixing groove, by joint it is corresponding with interior transfer tube enter
Air pipe interface is connected；
Step 4：Recorder is installed；
Two electronics hygrographs are respectively put into the upper and lower interior room of device outer tube, moisture probe from upper and lower interior room
Probe hole with being reserved on the space bar of middle room stretches into outer tube stage casing, and is fixed with cystosepiment and adhesive tape；
Step 5：Interior lid is mounted in interior transfer tube lower end by hickey, interior transfer tube lower end is kept closed；
Step 6：Put device and enter drilling, internal transfer tube gas transmission；
Above-mentioned device integral retaining is lived to be put into the drilling being drilled using rig, made at device outer tube interlude
At the soil layer of required measurement, pipe is increased to inner tube with pulsometer and topmost carries out pump gas, expands rubber pneumatic bag air inlet, when
Barometer on pump is shown be full of after, turn off pulsometer, sealed at internal transfer tube upper end outlet；
Step 7：Connect computer, real-time recorded data；
The computer of the USB ends connection earth's surface of electronics hygrograph data wire will be connected, the data measured under device to hole are carried out
Monitoring in real time and record.
The sealing for completing to increase inner tube after measuring pipe upper end is removed, and is made rubber pneumatic bag deflation, is passed through rig
The device is elevated, dismantled, recovery is arranged, in case use next time.
Further, when current measurement apparatus is unable to reach the soil depth of required measurement, increased by installing outer tube
Long tube and inner tube increase pipe and extend measurement apparatus；
The data wire of interior transfer tube upper end is lengthened, length adds 10 meters for the soil depth of required measurement, by data
Line is put into inner tube and increases pipe, and outer tube growth pipe sleeve is outer in inner tube growth pipe, passes through the screw thread of outer tube upper end and interior transfer tube upper end
Interface, and increase the hickey of pipe, constantly lengthen and increase pipe to soil depth, by interior lid by hickey mounted in interior
Transfer tube lower end, inner tube lower end is set to keep closed.
Further, when the soil layer of two or more different layers positions need to be measured, more set measurement apparatus groups are utilized
Dress is measured, and the middle room of each covering device is at the soil layer of required measurement.
Beneficial effect
Outside the invention provides a kind of total suction real-time measurement apparatus of unsaturation soil layer and its measuring method, including device
Pipe, rubber pneumatic bag, interior transfer tube and electronics hygrograph, by measuring the air of soil layer section in rubber pneumatic bag sealing drilling,
With the relative humidity after hygrometer method measurement soil layer balance, earth's surface is real-time transmitted to by data wire and handled, utilizes Kai Er
Literary formula calculates total suction of soil layer.The arrangement achieves the real-time monitoring to the total suction of unsaturation soil layer, and provide and can open up
The interface of exhibition formula, multiple different layers positions can be measured simultaneously.The device overcomes current researcher directly will experiment
The approach application of suction is surveyed in numerous drawbacks of engineering site in room：Measurement efficiency is low, measurement range is limited and operation difficulty compared with
Greatly；The measuring method provides a kind of in-situ measurement device, can quickly measure the total suction of soil layer, real-time delivery to earth's surface, and
And the soil body situation of different layers position can be measured simultaneously.In the case where not destroying soil layer former state feature, measuring speed is accelerated,
Improve measurement accuracy.Inhaled using the invention device to improving unsaturated soil area engineering investigation technique with improving unsaturation soil layer
Power measurement efficiency has larger promotional value.
Brief description of the drawings
Fig. 1 is measurement apparatus structural representation；
Fig. 2 is upper and lower interior room installation sectional view；
Fig. 3 is rubber pneumatic bag structural representation；
Fig. 4 is device outer tube structure schematic diagram；
Fig. 5 is upper and lower interior room structural representation；
Fig. 6 is middle cell structure schematic diagram；
Fig. 7 is interior transfer tube structural representation；
Fig. 8 is that outer tube increases tubular construction schematic diagram；
Fig. 9 is that inner tube increases tubular construction schematic diagram；
Figure 10 is interior lid structural representation；
Figure 11 is the diaphragm structure figure between upper and lower interior room and middle room；
Figure 12 is more set measurement apparatus operating diagram simultaneously；
In figure：1- device outer tubes, 2- rubber pneumatic bags, transfer tube in 3-, 4- electronics hygrographs, 5- data wires, on 6-
Interior room, interior room under 7-, room in 8-, 9- hickeys, 10- dividing plates, 11- inner orifices, 12- through holes, 13- probe holes, 14- humidity are visited
Head, 15- rubber pneumatic bag fixing grooves, 16- fixing groove apertures, 17- data string holes, 18- inner tubes increase pipe, and 19- outer tubes increase pipe,
Lid in 20-, 21- air inlet pipe, 22- intake pipe connections, 23- computers.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Figure 10 and Figure 11, a kind of total suction of unsaturation soil layer is surveyed in real time
Device is measured, including：Device outer tube 1, rubber pneumatic bag 2, interior transfer tube 3 and electronics hygrograph 4.
Such as Fig. 1, Fig. 4, Fig. 5, Fig. 6 and Figure 11, hickey 9 of the device outer tube 1 including upper and lower side, upper interior room 6, lower interior room
7th, middle room 8, there is dividing plate 10 between each room, there is a bore and the interior external diameter identical inner orifice 11 of transfer tube 3 among dividing plate, supply
Transfer tube in placement, it is probe hole 13 that the dividing plate between upper and lower interior room and middle room, which also has a circular aperture, for laying humidity
The moisture probe 14 of recorder 4；Upper and lower interior room perisporium has hickey 9, can be divided into two by screw thread by each interior chamber opening
Half, for opening installation interior arrangement；Middle room 8 is at the moisture probe work of recorder, and perisporium is provided with four through holes 12 so that
Middle room communicates with the air of outside pipe；Chamber outer wall has a rubber pneumatic bag fixing groove 15 at middle room in up and down, and this is solid
It is circle shape groove to determine groove, for laying rubber pneumatic bag 2, has fixing groove aperture 16 on groove, passes through for the air inlet pipe 21 of rubber pneumatic bag；
Device outer tube upper end is external screw thread, and lower end is internal thread.
As shown in Figure 1, Figure 2 and Fig. 3, rubber pneumatic bag 2 are annular closed structure, have air inlet pipe 21 on air bag, are placed in device
In the rubber pneumatic bag fixing groove 15 of outer tube 1, air inlet pipe is entered in outer tube through fixing groove aperture 16, passes through joint and interior transmission
Intake pipe connection 22 on pipe 3 is connected.
As shown in Figure 1, Figure 2, Fig. 3, Fig. 7 and Figure 10, the interior length of transfer tube 3 is identical with device outer tube 1, is positioned in outer tube
The heart, through three sections of outer tube upper, middle and lower, upper and lower side is hickey 9, and upper end is external screw thread, and lower end is internal thread, wherein in inner tube
There is intake pipe connection 22 positioned at upper and lower two interior rooms opening position, for connecting the air inlet pipe 21 of rubber pneumatic bag 2, two interfaces sides
There is a data string hole 17 respectively, for through data wire 5, because data wire is that rubber structure can play sealing function.Will
One sealing, an interior lid 20 for hickey, is connected with inner tube bottom, inner tube is sealed, avoid gas leakage.
Such as Fig. 1 and Fig. 2, the electronics hygrograph 4 that the present apparatus uses is small body type hygrometer on the market, has measurement
And the function of humidity situation of change is recorded, by taking German moral figure testo175H1 electronics humiture recorders as an example, support the use
Mini-B data wires 5 and ComSoft Basic data processing softwares；Upper and lower interior room can pass through the hickey 9 of interior room perisporium
Open；Electronics hygrograph is placed in interior room 6 and lower interior room 7, is fixed by cystosepiment and adhesive tape, hygronom
Moisture probe 14 puts in middle room through upper and lower interior room and the probe hole 13 on the space bar 10 of middle room 8, and the air of room is wet in measurement
Degree, the T interfaces of mini-B data wires are inserted into hygrograph, then cut data wire USB joint, data wire from interior biography
Data string hole 17 on defeated pipe 3 penetrates, and takes out, is lengthened from the upper end of interior transfer tube, until earth's surface, is connected to data wire
USB interface, for connecting computer 23, transmit data.
Such as Fig. 8 and Fig. 9, it is upper and lower threaded tubular structure that outer tube, which increases pipe 19 and increases pipe 18 with inner tube, and upper end is
External screw thread, lower end are internal thread, and bore is suitable with device outer tube 1 and interior transfer tube 3, can be connected by screw thread, wherein pipe range
It can produce according to demand.Increase the inner and outer pipes that pipe can be used to lengthen measurement apparatus, for measurement apparatus is put into drilling,
Or it can be used for connecting the 1st set of measurement apparatus and the 2nd set of measurement apparatus.
Specifically, when needing to measure the soil layer of simple layer position, measuring process is as follows：
Step 1：Installation data line.
By the USB of two mini-B data wires 5 to match with German moral figure testo175H1 electronics humitures recorder 4
Interface end is cut, and line is passed through from the data string hole 17 on interior transfer tube 3 respectively, T-shaped interface end is stayed in outside pipe, by two radicals
All taken out according to the other end of line from the upper end of interior transfer tube, USB joint is connected, for being connected with computer 23.
Step 2：Debugging recording instrument.
Two data lines 5 are connected with same computer 23 respectively by USB interface, open hygrograph 4, and insert
Upper T-shaped interface, opens the software ComSoft Basic that recorder is supporting on computer, is debugged, when computer has begun to record
After data, debug successfully, pull out the interface of data wire respectively, and remove USB joint and facilitate ensuing wiring to work.Remember therebetween
Record instrument needs to remain working condition.
Step 3：Rubber pneumatic bag is installed.
The 6-7 of interior room up and down of device outer tube 1 is opened by hickey 9, transfer tube 3 in insertion, by two rubber gas
Capsule is strutted with hand, makes the air bag internal diameter of circular ring type is temporary transient to become big, convenient installation, air bag is put to two ring-types reserved on outer tube
In rubber pneumatic bag fixing groove, by air inlet pipe through the aperture in fixing groove, into outer tube, by interface with it is right on interior transfer tube
The interface answered is connected.
Step 4：Recorder is installed.
Two hygrographs 4 are respectively put into the interior room 6-7 up and down of device outer tube 1, moisture probe 14 out of up and down
Room in outer tube is stretched into room with the probe hole 13 reserved on the space bar 10 of middle room 8, and recorder is fixed with cystosepiment and adhesive tape, will be pre-
The T-shaped interface of the data wire 5 stayed in outside interior transfer tube 3 plugs recorder, finally by hickey 9 that upper and lower interior room is all respective
Close.
Step 5：Outer tube is installed and increases pipe, inner tube growth pipe and interior lid.
The spreading of data wire 5 that the interior upper end of transfer tube 3 is stretched, length add 10 for the soil depth of required measurement
Rice, and connect USB interface.Data wire is put into inner tube and increases pipe 18, outer tube increases pipe 19 and is enclosed on outside inner tube growth pipe, by outer
Pipe upper end and the hickey 9 of interior transfer tube upper end, and increase the hickey of pipe, constantly lengthen and increase pipe to soil layer depth
Degree.Interior lid 20 is mounted in interior transfer tube lower end by hickey, inner tube lower end is kept closed.
Step 6：Put device and enter drilling, to inner tube gas transmission.
Above-mentioned device integral retaining is lived to be put into good drilling by common rig, makes device outer tube 1
Required for middle room is exactly at the soil layer of measurement, pipe 18 is increased to inner tube with pulsometer and topmost carries out pump gas, makes rubber gas
The air inlet of capsule 2 expands, and after the barometer on pump, which is shown, to be full of, turns off pulsometer, increases the top exit of pipe to inner tube and makes
Simply sealed with rubber stopper.
Step 7：Connect computer, real-time recorded data.
Two data lines 5 stretched are connected into USB joint respectively, the computer 23 of earth's surface is connected by USB joint, are used
The supporting software ComSoft Basic of the hygrograph 4 carry out monitoring in real time and record to the data for the lower measurement that drills, and calculate
Total suction of measured soil layer.
Step 8：Reclaimer.
The sealing for completing to increase inner tube after measuring the upper end of pipe 18 is removed, and is made the deflation of rubber pneumatic bag 2, is passed through brill
Machine elevates the device, is dismantled, and recovery is arranged, in case the use measured next time.
Such as Figure 12, when needing to measure the soil layer of multiple different layers positions, it is necessary to cover the device, measuring process is as follows more：
Step 1：Installation data line.
The interface end for two mini-B data wires 5 that every covering device is used respectively is cut, from respective interior transfer tube 3
Data string hole 17 pass through, T-shaped interface end is stayed in outside pipe, the other end of two data lines is connected into USB interface again, from each
From interior transfer tube upper end take out；
Step 2：Debugging recording instrument.
Two data lines 5 of each covering device are connected with same computer 23 respectively by USB interface, opened all
Hygrograph 4, and plug T-shaped interface, open the software that recorder is supporting on computer, debugged successively, when computer
After start recording data, debug successfully, pull out the interface of data wire respectively, during which recorder needs to remain work shape
State.
Step 3：Rubber pneumatic bag is installed.
The upper and lower interior room of the device outer tube 1 of every covering device is opened by hickey 9, each transfer tube 3 in insertion,
Each two rubber pneumatic bags 2 are strutted with hand, the air bag internal diameter of circular ring type is temporarily become big, convenient installation, air bag is put to outer
On the two ring-shaped rubber bladder retaining slots 15 reserved on pipe, by air inlet pipe 21 through the aperture 16 in fixing groove, into outer tube
It is interior, it is connected by interface with corresponding intake pipe connection 22 on respective interior transfer tube.
Step 4：Recorder is installed.
Two hygrographs 4 are respectively put into the upper and lower interior room of respective device outer tube 1, moisture probe 14 from upper and lower
Interior room stretches into middle room with the probe hole 13 reserved on the space bar 10 of middle room 8, fixes recorder with cystosepiment and adhesive tape, finally leads to
Hickey 9 is crossed all each to close upper and lower interior room.
Step 5：Outer tube is installed and increases pipe, inner tube growth pipe and interior lid.
The data wire 5 that the upper end of interior transfer tube 3 of each covering device is stretched is lengthened, length is to be measured needed for the covering device
Soil depth add 10 meters, will be joined directly together between each covering device or by increase pipe be connected, in a set of of topmost
Device upper end lengthens also by pipe is increased, and increases pipe 19 by outer tube between each covering device and inner tube increases the hickey of pipe 18
9 are connected, the soil depth for finally causing each covering device to be measured required for being each device to the distance of growth pipe the top,
The data wire of each covering device increases pipe by inner tube and inner tube and reached successively outside the pipe of the top, is numbered.By inner tube
Lid 20 is mounted in the interior transfer tube lower end of the set of device in bottom by hickey, makes under the whole inner tube of more covering devices
End keeps closed.
Step 6：Put device and enter drilling, to inner tube gas transmission.
Above-mentioned device clamped by common rig and is put into the dress in good drilling, making each covering device
At the soil layer for putting measurement required for the interlude of outer tube 1 is exactly in each, pipe 18 is increased to inner tube with pulsometer and topmost carried out
Pump gas, two air inlets of rubber pneumatic bag 2 of each covering device are expanded, after the barometer on pump, which is shown, to be full of, turn off pulsometer,
The top exit for increasing pipe to inner tube is simply sealed with rubber stopper.
Step 7：Connect computer, real-time recorded data.
Two data lines 5 of every covering device are connected into USB joint respectively, the computer 23 of earth's surface is connected by USB joint, it is right
The each group of data of the lower measurement of drilling carries out monitoring in real time and record.
Step 8：Reclaimer.
The sealing for completing to increase inner tube after measuring the upper end of pipe 18 is removed, and makes all deflations of rubber pneumatic bag 2,
All devices are elevated by rig, dismantled, recovery is arranged respectively to every covering device, in case what is measured makes next time
With.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although with reference to above-described embodiment pair
The present invention is described in detail, those of ordinary skills in the art should understand that：Still can be to the specific of the present invention
Embodiment is modified or equivalent substitution, and without departing from any modification of spirit and scope of the invention or equivalent substitution,
It all should cover among scope of the presently claimed invention.
Claims (7)
1. a kind of total suction real-time measurement apparatus of unsaturation soil layer, it is characterised in that including device outer tube (1), rubber pneumatic bag
(2), interior transfer tube (3) and electronics hygrograph (4), the interior transfer tube (3) are nested in device outer tube (1)；
Described device outer tube (1) is setting symmetrical above and below, is sequentially provided with interior room (6), middle room (8) and lower interior room (7), each room it
Between be provided with sealing dividing plate (10), using being detachably connected between upper interior room and lower interior room and middle room；Wherein, upper interior room and lower interior
Outside is provided with rubber pneumatic bag fixing groove (15), and rubber pneumatic bag is installed in rubber pneumatic bag fixing groove, and rubber pneumatic bag and interior biography
The air inlet pipe (21) being communicated between defeated pipe, through hole (12) is offered on middle chamber outer wall；
An electronics hygrograph (4) is respectively provided with upper interior room and lower interior room, the moisture probe (14) of electronics hygronom passes through
Dividing plate (10) puts in middle room (8), and the data wire of electronics hygronom is connected along inside interior transfer tube with external instrument.
2. device according to claim 1, it is characterised in that the upper and lower ends of described device outer tube and interior transfer tube are all provided with
There is hickey.
3. device according to claim 2, it is characterised in that the rubber pneumatic bag fixing groove is circle shape groove.
4. the device according to Claims 2 or 3, it is characterised in that real-time including at least two sets of total suction of unsaturation soil layer
Measurement apparatus, it is directly connected to by hickey between neighboring devices.
5. the device described in a kind of exploitation right 1 carries out the measuring method of the total suction of unsaturation soil layer, it is characterised in that including following
Step：
Step 1：Two mini-B data wires are passed through from the data string hole on interior transfer tube respectively, T-shaped interface end stayed in interior
In the upper interior room of device outer tube residing for transfer tube and lower interior room, the USB ends of mini-B data wires take from the upper end of interior transfer tube
Go out；
Step 2：Debugging recording instrument；
Two data lines are connected with same computer respectively by USB port, open hygrograph, and plug T-shaped connect
Mouthful, the software that recorder is supporting on computer is opened, is debugged, after computer has begun to record data, pulls out data respectively
The interface of line, afterwards recorder remain working condition；
Step 3：Rubber pneumatic bag is installed；
By in interior transfer tube insertion apparatus outer tube, two rubber pneumatic bags are arranged on to the rubber pneumatic bag of upper interior room and lower interior outside
In fixing groove, by air inlet pipe through the aperture in rubber pneumatic bag fixing groove, pass through joint air inlet pipe corresponding with interior transfer tube
Interface is connected；
Step 4：Recorder is installed；
Two electronics hygrographs are respectively put into the upper and lower interior room of device outer tube, moisture probe from upper and lower interior room with
The probe hole reserved on the space bar of room stretches into outer tube stage casing, and is fixed with cystosepiment and adhesive tape；
Step 5：Interior lid is mounted in interior transfer tube lower end by hickey, interior transfer tube lower end is kept closed；
Step 6：Put device and enter drilling, internal transfer tube gas transmission；
Above-mentioned device integral retaining is lived to be put into the drilling being drilled using rig, device outer tube interlude is in institute
Need at the soil layer that measures, increasing pipe to inner tube with pulsometer topmost carries out pump gas, makes rubber pneumatic bag air inlet expansion, when on pump
Barometer show and be full of after, turn off pulsometer, sealed at internal transfer tube upper end outlet；
Step 7：Connect computer, real-time recorded data；
The computer of the USB ends connection earth's surface of electronics hygrograph data wire will be connected, the data measured under device to hole carry out real-time
Monitoring and record.
6. according to the method for claim 5, it is characterised in that the soil of measurement needed for being unable to reach when current measurement apparatus
During layer depth, by installing, outer tube increases pipe and inner tube increases pipe and extends measurement apparatus；
The data wire of interior transfer tube upper end is lengthened, length adds 10 meters for the soil depth of required measurement, and data wire is put
Enter inner tube and increase pipe, outer tube growth pipe sleeve is outer in inner tube growth pipe, passes through the hickey of outer tube upper end and interior transfer tube upper end
Or increase the hickey of pipe, constantly lengthen and increase pipe to soil depth, interior lid is mounted in interior transmission by hickey
Pipe lower end, inner tube lower end is set to keep closed.
7. according to the method for claim 5, it is characterised in that when the soil that need to measure two or more different layers positions
During layer, measured using more set measurement apparatus assemblings, the middle room of each covering device is at the soil layer of required measurement.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813866A (en) * | 2019-01-24 | 2019-05-28 | 中南大学 | The measuring system and measurement method of unsaturation frozen soil matric potential |
| 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 |
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| CN109813866A (en) * | 2019-01-24 | 2019-05-28 | 中南大学 | The measuring system and measurement method of unsaturation frozen soil matric potential |
| CN109813866B (en) * | 2019-01-24 | 2021-08-17 | 中南大学 | Method for measuring matrix potential of unsaturated frozen soil |
| 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 |
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Application publication date: 20171201 |