CN104878735B - Soil osmotic coefficient in-situ testing device and testing method thereof - Google Patents
Soil osmotic coefficient in-situ testing device and testing method thereof Download PDFInfo
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- CN104878735B CN104878735B CN201510192336.7A CN201510192336A CN104878735B CN 104878735 B CN104878735 B CN 104878735B CN 201510192336 A CN201510192336 A CN 201510192336A CN 104878735 B CN104878735 B CN 104878735B
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Abstract
The invention relates to the technical field of measurement, in particular to a soil osmotic coefficient in-situ testing device and testing method thereof. The testing device comprises a testing barrel and a driving control box, the surface of the testing barrel is provided with a water inlet hole, a water pump and a water pressure sensor are arranged in the testing barrel, a lifting mechanism is arranged in the driving control box, a traction line of the lifting mechanism is connected with the testing barrel fixedly, the driving control box controls the testing barrel up and down by the lifting mechanism, and the traction line comprises a water guide pipe, a sensing line and a bearing line. The sensing line is connected with the water pressure sensor, the water guide pipe is connected with the water pump, and the bearing line is fixedly connected with the testing barrel. The soil osmotic coefficient in-situ testing device has the advantages that the testing device can be used fittingly in any manholes in situ and can measure soil osmotic coefficient of assigned depth.
Description
Technical field
The present invention relates to field of measuring technique, more particularly, to soil layer infiltration coefficient in-situ testing device and its method of testing.
Background technology
In geotechnical engineering investigation field, generally require to carry out a series of in-situ test, understand the hydrology in floor area
Geological characteristics.Wherein infiltration coefficient in-situ test is a kind of relatively common in-situ test that can be appreciated that hydrogeological characteristic.Mesh
Front conventional means of testing is bailing test, water injection test, and so this two methods can only coordinate rig to use, and cannot be carried out spy
Determine the test job of soil body penetration characteristic in scope.Because interior carries out soil body osmotic coefficient mensure work, it is related to sample matter
The quality of amount, and have ignored too many boundary condition, cause result of the test often not fully up to expectations.Have no convenient, fast at present
Instrument, can be carried out the test job of soil body osmotic coefficient in specific region, facilitates ground designer according to engineering design needs
Member targetedly tests the original position infiltration coefficient of the specific soil body.The soil layer being therefore easy to each engineers and technicians' onsite application oozes
Coefficient in-situ testing device is particularly important thoroughly.
Content of the invention
The purpose of the present invention is according to above-mentioned the deficiencies in the prior art, there is provided soil layer infiltration coefficient in-situ testing device and
Its method of testing, device includes driving means and drives, by driving means, the test barrel risen and fallen, can any inspecting hole in the venue
Inside record the soil body osmotic coefficient of designated depth.
The object of the invention is realized being completed by technical scheme below:
A kind of soil layer infiltration coefficient in-situ testing device it is characterised in that: described test device includes test barrel and driving
Control chamber, described test barrel surface offers inlet opening, is internally provided with suction pump and hydraulic pressure sensor, described drive control box
In be provided with elevating mechanism, the draught line of described elevating mechanism is connected with described test barrel, and described drive control box passes through
Described elevating mechanism controls rising and falling of described test barrel, and institute's draught line is made up of aqueduct, sensing line and load-bearing line, wherein said
Sensing line is connected with described hydraulic pressure sensor, and described aqueduct is connected with described suction pump, described load-bearing line and described test barrel
It is connected.
The top of described test barrel and bottom are respectively arranged with water-stop sheet, and described water-stop sheet has been respectively fixedly connected with a rotation
Gear, described swing pinion connects driving by described drive control box, and described swing pinion drives described water-stop sheet to rotate expansion
Or rotate gathering.
Described test barrel be provided centrally with hard tube, described draught line is arranged in the inside of described hard tube.
It is respectively arranged with telescopic joint on the vertical direction of described test barrel and described hard tube.
It is related to the soil layer infiltration coefficient home position testing method of above-mentioned soil layer infiltration coefficient in-situ testing device, its feature exists
In: described method of testing at least comprises the following steps:
By the driving of elevating mechanism described in described drive control box, described test barrel is put into the soil depth specified
Scope, the length of described test barrel is matched with described soil body depth bounds；
Described swing pinion rotation is driven by described drive control box, described swing pinion drives described water-stop sheet to launch
And insert among the described soil body；
By the subsoil water of the soil body of pumping designated depth of drawing water described in the startup of described drive control box, and by described
Hydraulic pressure sensor measures the pressure value of the water yield in described test barrel.
According to required by soil layer infiltration coefficient in-situ test, the soil depth scope of measurement adjusts stretching in described test barrel
Casing coupling, makes the length of described test barrel identical with described soil depth scope.
The invention has the advantage that any inspecting hole in place can be coordinated to use；The soil body penetration system of designated depth can be recorded
Number；Have the advantages that structure is simple, workable, easy to carry, practical, novel in design.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the filter structure schematic diagram of test barrel periphery in the present invention；
Fig. 3 is the filter structure schematic diagram of test barrel bottom in the present invention.
Specific embodiment
Feature of present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that
Understanding in technical staff of the same trade:
As Figure 1-3, in figure labelling 1-25 be respectively as follows: drive control box 1, test barrel 2, accumulator 3, power interface 4,
Time display screen 5, hydraulic pressure display screen 6, coiling 7, motor 8, control knob 9, shell 10, filter screen 11, suction pump 12, water
Pressure sensor 13, aqueduct 14, sensing line 15, swing pinion 16, water-stop sheet 17, hard tube 18, draught line 19, screw ring 20, on
Surface 21, drain pipe 22, bayonet lock 23, telescopic joint 24, load-bearing line 25.
Embodiment: as shown in figure 1, the soil layer infiltration coefficient in-situ testing device in the present embodiment include drive control box 1,
Test barrel 2, wherein drive control box 1 connect control test barrel 2.It is provided with accumulator 3, accumulator can be led in drive control box 1
Cross power interface 4 to charge, if live electricity consumption is convenient, this power interface 4 also can be directly connected to alternating current power supply and use.Drive control box
1 upper surface is distributed with time display screen 5, hydraulic pressure display screen 6 and control knob 9.
Structure hard tube 18 is fixedly installed on test barrel 2 inner hub location, the bottom of test barrel 2 is provided with Miniature water-pumping
Pump 12 and hydraulic pressure sensor 13.It is provided with the shell 10 of drive control box 1 by draught line 19, coiling 7 and motor 8 structure
The elevating mechanism becoming, wherein draught line 19 is wrapped on coiling 7, and its one end is mutually fixed with coiling 7, the other end and test barrel
2 are connected, and one end of coiling 7 is connected to a fixed with the drive shaft of motor 8.By the driving coiling of motor 8
Circle 7 rotation, the draught line 19 being wound on coiling 7 zooms in and out, thus controlling 2 liters of test barrel being connected with draught line 19
Fall.
Draught line 19 can be connected with the hard tube 18 of test barrel 2 by termination screw ring 20, thus ensure that the whole of device
Body.Draught line 19 is made up of aqueduct 14, sensing line 15, load-bearing line 25 and the flexible pipe being sleeved on outside it, aqueduct 14
Pass through the structure hard tube 18 in test barrel 2 respectively with sensing line 15 and connect Miniature water-pumping pump 12 and hydraulic pressure to test barrel 2 bottom
Sensor 13, and the bottom surface phase of load-bearing line 25 and test barrel 2 is fixed, to ensure stability in lifting process for the test barrel 2.Lead
The other end of water pipe 14 stretches out in the outer formation drain pipe 22 of shell 10 of drive control box 1, when the gaging hole in place has measured
Subsoil water, when next gaging hole measures, is discharged from test barrel 3 by Bi Hou by drain pipe 22.
The top of test barrel 2 and bottom are respectively arranged with swing pinion 16, and swing pinion 16 has connecting line to be connected to draught line
On sensing line 15 in 19, swing pinion 16 connects control by drive control box 1.The periphery of swing pinion 16 is fixedly connected with water proof
Plate 17, between the two constitute be connected, realize swing pinion 16 rotation when, water-stop sheet 17 rotary expansion or rotation draw in.
When actually used, the rotation direction of swing pinion 16 can be controlled, and then adjusts by the control knob 9 on drive control box 1
The retracted position of water-stop sheet 17.When test barrel 2 to reach predetermined depth when, by control knob 9, drive control box 1 drives rotation
Rotating disk 16 rotates makes water-stop sheet 17 launch, and in incision soil at both sides, prevents the upper and lower current of gaging hole from entering test barrel 2, by micro-
Type suction pump 12, extracts the original gaging hole water between two water-stop sheets 17.Subsequently pass through hydraulic pressure sensor 13, ground in monitoring and test cylinder 2
Seepage discharge in special time for the lower water, and then try to achieve the infiltration coefficient of the soil body in the range of predetermined depth.
Water inlet is had on the outer wall of test barrel 2 and extracts native in the layer subsoil water for suction pump 12.Test barrel 2 periphery and
It is respectively arranged with filter screen 11 and filter screen 21, both are for preventing at suction pump, hydraulic pressure sensor structural area upper surface 21
In process of the test, gaging hole soil particle enters inside test barrel 2.
The cylinder of test barrel 2 and its internal hard tube 18 surface distributed have some bayonet locks 23, and surrounding filter screen relevant position is distributed
There is telescopic joint 24, for the adjustment test scope that once complete penetration testing is tested.Bayonet lock 23 spacing can be according to industry using habit
Used determination.For example, when soil body MTD is 1m-2m, can be by bayonet lock 23 and telescopic joint 24 by the length adjustment of test barrel 2
To 1m so that once testing the soil body osmotic coefficient only recording in 1m-2m depth bounds；In the same manner, when soil body MTD is 1m-
During 3m or 1m-4m, corresponding adjustment bayonet lock 23 and telescopic joint 24 make the length adjustment of test barrel 2 2m needed for test scope or
3m.
The present embodiment step in concrete test is as follows:
1st, will be fully charged for the accumulator 3 of drive control box 1, or power interface 4 is directly connected to the alternating current electricity in place
On source, then instrument is integrally removed by any gaging hole to place.
2nd, tighten draught line 19 and the connecting screw ring 20 of hard tube 18 makes drive control box 1 and test barrel 2 be connected to a fixed.
The length of test barrel 2 is adjusted so as to length and the soil body depth bounds kissing specified when testing by bayonet lock 23 and telescopic joint 24
Close.By control knob 9, adjust swing pinion 16, make water-stop sheet 17 be in closure rounding state.
3rd, test barrel 2 is placed in gaging hole, by control knob 9, by it down to predetermined depth.By control knob 9, adjust
Section swing pinion 16, makes water-stop sheet 17 launch and is cut in the surrounding soil body.Now measuring cylinder 3 is in by two pieces of water-stop sheets 17
In the soil body environment being separated out, and the depth bounds of this soil body environment is and tests required soil body depth bounds.Start suction pump
16, take out the original gaging hole water in optical tests cylinder 2, the gaging hole water in a gaging hole on this.
4th, suction pump 16 works on, opening time display screen 5 and pressure display screen 6, real-time by hydraulic pressure sensor 13
The pressure value of the water yield is newly oozed out in record test barrel 2.It is full of subsoil water, pressure display screen 6 numerical stability, examination in cylinder 2 to be tested
Test end.Technical staff passes through newly to ooze out the soil layer infiltration system that the pressure value of the water yield and time value are calculated in this depth bounds
Number
5th, pass through control knob 9, so that water-stop sheet 17 is closed, test device is put to next depth, repeat step 3,4, continues
Continuous test.
Claims (6)
1. a kind of soil layer infiltration coefficient in-situ testing device it is characterised in that: described test device include test barrel and drive control
Case processed, described test barrel surface offers inlet opening, is internally provided with suction pump and hydraulic pressure sensor, in described drive control box
It is provided with elevating mechanism, the draught line of described elevating mechanism is connected with described test barrel, described drive control box passes through institute
State elevating mechanism and control rising and falling of described test barrel, described draught line is made up of aqueduct, sensing line and load-bearing line, wherein said
Sensing line is connected with described hydraulic pressure sensor, and described aqueduct is connected with described suction pump, described load-bearing line and described test barrel
It is connected.
2. a kind of soil layer infiltration coefficient in-situ testing device according to claim 1 it is characterised in that: described test barrel
Top and bottom are respectively arranged with water-stop sheet, and described water-stop sheet has been respectively fixedly connected with a swing pinion, described swing pinion by
Described drive control box connects driving, and described swing pinion drives described water-stop sheet to rotate expansion or rotate gathering.
3. a kind of soil layer infiltration coefficient in-situ testing device according to claim 1 it is characterised in that: described test barrel
It is provided centrally with hard tube, described draught line is arranged in the inside of described hard tube.
4. a kind of soil layer infiltration coefficient in-situ testing device according to claim 3 it is characterised in that: described test barrel and
It is respectively arranged with telescopic joint on the vertical direction of described hard tube.
5. the soil layer infiltration system of a kind of soil layer infiltration coefficient in-situ testing device being related to described in any one of the claims 1-4
Number home position testing methods it is characterised in that: described method of testing comprises the following steps:
By the driving of elevating mechanism described in described drive control box, described test barrel is put into the soil depth model specified
Enclose, the length of described test barrel is matched with described soil depth scope；
Swing pinion rotation is driven by described drive control box, described swing pinion drives water-stop sheet to launch and insert described soil
Among layer；
By the subsoil water of the soil layer of pumping designated depth of drawing water described in the startup of described drive control box, and pass through described hydraulic pressure
Sensor measures the pressure value of the water yield in described test barrel.
6. a kind of soil layer infiltration coefficient home position testing method according to claim 5 it is characterised in that: according to soil layer permeate
The soil depth scope of the required measurement of coefficient in-situ test adjusts the telescopic joint in described test barrel, makes the length of described test barrel
Degree is identical with described soil depth scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192336.7A CN104878735B (en) | 2015-04-21 | 2015-04-21 | Soil osmotic coefficient in-situ testing device and testing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192336.7A CN104878735B (en) | 2015-04-21 | 2015-04-21 | Soil osmotic coefficient in-situ testing device and testing method thereof |
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| Publication Number | Publication Date |
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| CN104878735A CN104878735A (en) | 2015-09-02 |
| CN104878735B true CN104878735B (en) | 2017-02-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680483B (en) * | 2018-05-23 | 2020-05-08 | 中南大学 | Soil body in-situ permeability coefficient measuring device and testing method |
| CN109709018B (en) * | 2019-01-22 | 2020-08-14 | 南京大学 | Tunnel rich water fault broken zone permeability coefficient in-situ measuring device |
| CN110044797A (en) * | 2019-05-31 | 2019-07-23 | 中国地质大学（北京） | Aeration zone Infiltration monitoring method and device and monitoring extraction system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3772884B2 (en) * | 2003-11-21 | 2006-05-10 | 株式会社竹中工務店 | In-situ vertical permeability test equipment |
| CN102128775B (en) * | 2010-12-29 | 2013-05-15 | 河海大学 | Detachable constant head permeability coefficient tester |
| CN102252952A (en) * | 2011-07-20 | 2011-11-23 | 东南大学 | Device for determining soil layer in-situ permeability coefficient |
| JP5433888B1 (en) * | 2013-03-04 | 2014-03-05 | 強化土株式会社 | Ground improvement method |
| CN103344542A (en) * | 2013-07-11 | 2013-10-09 | 北京交通大学 | Device for measuring permeability coefficient by variable head method |
| CN103792172B (en) * | 2014-01-15 | 2016-04-27 | 山东农业大学 | Adding pressure type falling head permeameter |
| CN204589978U (en) * | 2015-04-21 | 2015-08-26 | 中铁上海设计院集团有限公司 | Soil layer transmission coefficient in-situ testing device |
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