CN205607820U - Flexible wall infiltration appearance that measurable body becomes - Google Patents
Flexible wall infiltration appearance that measurable body becomes Download PDFInfo
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- CN205607820U CN205607820U CN201620330000.2U CN201620330000U CN205607820U CN 205607820 U CN205607820 U CN 205607820U CN 201620330000 U CN201620330000 U CN 201620330000U CN 205607820 U CN205607820 U CN 205607820U
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Abstract
The utility model discloses a flexible wall infiltration appearance that measurable body becomes, including the pressure chamber, the pressure chamber top is the pressure chamber roof, the bottom is the pressure chamber bottom plate install sample placing chamber in the pressure chamber, sample placing chamber installs on the top hood, the base is installed to the bottom, and its characterized in that still becomes sensor and data collection station including personally experiencing sth. Part of the body, the body becomes the sensor and installs on the pressure chamber roof and through the pipeline with the inside intercommunication of pressure chamber, the body become the sensor with data collection station connecting communication. The utility model discloses the problem that rigidity wall infiltration appearance lateral wall leaked has not only been overcome, sample volume change in moreover can the real -time supervision process of osmosis, can the quantitative stability of measureing the pore water pressure of sample top and bottom, the osmotic coefficient monitoring of different samples in the relevant standard of realization geotechnical engineering.
Description
Technical field
This utility model relates to permeability test equipment manufacturing technology field, a kind of flexible wall permeameter surveying body change.
Background technology
In engineering construction, infiltration coefficient is the important indicator of reflection soil body penetration performance.The Accurate Determining of infiltration coefficient has great importance for setting, dam foundation permeability values and saturated clay settlement of foundation and the Time Calculation of excavation of foundation pit pumping equipment.Permeability test is the important method measuring infiltration coefficient.
Current permeability test is tested by permeameter mostly, and conventional permeameter includes rigid walls permeameter (with TST-55 permeameter as representative) and flexible wall permeameter.Rigid walls permeameter can carry out the infiltration coefficient test of the preferable soil body of permeability, and the test scope of flexible wall permeameter is wider, it is possible not only to test the infiltration coefficient of the preferable sample of permeability, the infiltration coefficients such as the clay infiltration coefficient compared with small sample can be carried out simultaneously.The use in Geotechnical Engineering of the rigid walls permeameter is relatively broad, and present in test process, subject matter is sidewall seepy question, and the clearance leakage that contacts between infiltration cutting ring and permeameter sidewall causes the infiltration coefficient tested inaccurate；In recent years, flexible wall permeameter use in Geotechnical Engineering is also being on the increase, but flexible wall permeameter in use there is also some problems, flexible wall penetration testing mainly cannot measure the change in volume of sample, some scholars is provided with dial gauge inside pressure chamber, but dial gauge only can the vertical deformation of test sample, owing to sample is in infiltration, not only produce vertical deformation, also can produce radial deformation, and radial deformation is often in the diverse location property of there are differences of sample, the change in volume in sample infiltration is used to weigh for sample bulk deformation situation suggestion in process of osmosis, especially meet the Rock And Soil that water sedimentation and deformation is bigger, such as loess, deformation parameter in its process of osmosis has very important directive significance for the engineering design of this type of soil.
Utility model content
This utility model, for the deficiencies in the prior art, proposes a kind of flexible wall permeameter surveying body change, not only overcomes the problem that rigid walls permeameter sidewall leaks, and can monitor the volume of sample change in process of osmosis in real time；Can the stability of pore water pressure of quantitative measurement sample top and bottom；Realize the infiltration coefficient monitoring of various sample in Geotechnical Engineering related specifications.
In order to realize above-mentioned utility model purpose, this utility model offer techniques below scheme:
A kind of survey the flexible wall permeameter that body becomes, including pressure chamber, described pressure chamber top be pressure chamber top board, bottom be pressure chamber base plate, sample holding chamber is installed in described pressure chamber, described sample holding chamber top is provided with top cap, bottom is provided with base,
Also include body and become sensor and data acquisition unit,
Described body becomes sensor and is arranged on described pressure chamber top board and connects by pipeline and described pressure chamber are internal, and described body becomes sensor and described data acquisition unit connecting communication.
Further, also include that pressure controller, described pressure controller are connected with the water injection hole on described pressure chamber top board, described pressure chamber top board is additionally provided with steam vent.
Further, described top cap is provided with first row water hole, described base has the first inlet opening, described first row water hole is connected with the first pore water pressure sensor, described first inlet opening is connected with the second pore water pressure sensor, described first pore water pressure sensor connect and described second pore water pressure sensor all with described data acquisition unit connecting communication.
Further, the first two-way valve is installed between described first row water hole and described first pore water pressure sensor, the second two-way valve is installed between described first inlet opening and described second pore water pressure sensor.
Further, during by the first volume/stress controller and the second volume/stress controller back-pressure saturated sample, opening described first two-way valve, described second two-way valve, described first pore water pressure sensor and described second pore water pressure sensor, the registration of described first pore water pressure sensor and described second pore water pressure sensor is close to completing to i.e. thinking that back-pressure is saturated after preset range simultaneously.
6, a kind of flexible wall permeameter surveying body change, it is characterized in that, described top cap is also equipped with second row water hole, described base is also equipped with the second inlet opening, described second row water hole is connected with the first volume/stress controller, described second inlet opening is connected with the second volume/stress controller, described first volume/stress controller and described second volume/stress controller and described data acquisition unit connecting communication.
Further, between described second row water hole and described first volume/stress controller, the first three-way valve is installed, between described second inlet opening and the second volume/stress controller, the second three-way valve is installed.
Further, the sidewall internal diameter of described sample holding chamber, top cap internal diameter are corresponding with base inner diameter, and have several dimensions.
This utility model is a kind of surveys the flexible wall permeameter that body becomes, and opens body and become sensor in process of osmosis, can monitor the volume of sample change in process of osmosis in real time；Back-pressure saturation history is opened the pore water pressure sensor that sample top is corresponding with bottom conduit, utilizes pore water water pressure stationary value that data acquisition unit collects as the quantitative measurement standard of the saturated end of back-pressure；There is provided various sizes of sample holding chamber, it is achieved the infiltration coefficient monitoring of various sample in Geotechnical Engineering related specifications.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing flexible wall permeameter described in this utility model background technology, wherein 101-water inlet head water tank, 102-water head-drop water tank, 103-pressure chamber water tank, 104-air compressor；
Fig. 2 is a kind of schematic diagram surveying the flexible wall permeameter that body becomes described in the utility model；
Fig. 3 is the schematic top plan view of a kind of pressure chamber top board surveying the flexible wall permeameter that body becomes described in the utility model, and wherein 22-fixes bolt, and 25-becomes sensor junction with body；
Fig. 4 is the schematic top plan view of a kind of pressure chamber base plate surveying the flexible wall permeameter that body becomes described in the utility model, the pipeline that wherein 33-and the second inlet opening connect, the pipeline that the pipeline that 34-is connected with second row water hole, 35-and the first inlet opening connect, the pipeline that 36-is connected with first row water hole.
Detailed description of the invention
Being described in detail this utility model below in conjunction with the accompanying drawings, the description of this part is only exemplary and explanatory, should not have any restriction effect to protection domain of the present utility model.
A kind of flexible wall permeameter surveying body change as Figure 1-4, including pressure chamber 1, pressure chamber 1 top be pressure chamber top board 2, bottom be pressure chamber base plate 3, sample holding chamber 19 is installed in pressure chamber 1, sample holding chamber 19 top is provided with top cap 4, bottom is provided with base 5, base 5 is screwed on pressure chamber base plate 3
Also include body and become sensor 14 and data acquisition unit 17,
Body becomes sensor 14 and is arranged on pressure chamber top board 2 and connects by pipeline and pressure chamber 1 are internal, and body becomes sensor 14 and data acquisition unit 17 connecting communication.
Also include that pressure controller 16, pressure controller 16 are connected with the water injection hole 23 on pressure chamber top board 2, are additionally provided with steam vent 24 on pressure chamber top board 2.Pressure controller 16 is for applying in permeability test the pressure around sample, by going air water to pressure is applied on sample.
Top cap 4 is provided with first row water hole, base 5 has the first inlet opening, first row water hole is connected with the first pore water pressure sensor 11, first inlet opening is connected with the second pore water pressure sensor 10, first pore water pressure sensor 11 connect and the second pore water pressure sensor 10 all with data acquisition unit 17 connecting communication.
First two-way valve 9 is installed between first row water hole and the first pore water pressure sensor 11, the second two-way valve 8 is installed between the first inlet opening and the second pore water pressure sensor 10.
Top cap 4 is also equipped with second row water hole, base 5 is also equipped with the second inlet opening, second row water hole is connected with the first volume/stress controller 13, second inlet opening is connected with the second volume/stress controller 12, the first volume/stress controller 13 and the second volume/stress controller 12 and data acquisition unit 17 connecting communication.Volume/stress controller has measurement pressure and the dual-use function of volume, the test of change in volume can be carried out after fixation pressure is set, can carry out the real-time monitoring of pressure after arranging fixed volume, two volume/stress controllers are with the use of the setting carrying out osmotic pressure.
First three-way valve 6 is installed between second row water hole and the first volume/stress controller 13, the second three-way valve 7 is installed between the second inlet opening and the second volume/stress controller 12.
The sidewall internal diameter of sample holding chamber 19, top cap 4 internal diameter are corresponding with base 5 internal diameter, and have several dimensions.
When sample is installed, between base 5 and sample bottom, be provided with saturated permeable stone and filter paper, filter paper be located proximate to sample side, between top cap 4 and sample top, be provided with saturated permeable stone and filter paper, filter paper is located proximate to sample side, and saturated permeable stone has several specification.
This utility model using method is as follows:
(1) aerofluxus and sensor reset.The pipeline utilizing the first volume/stress controller 13 and the second volume/stress controller 12 top cap 4 and base 5 to connecting sample holding chamber 19 is exhausted work；It is exhausted work for connecting sample holding chamber 19 top cap 4 and the first pore water pressure sensor 11 of base 5 and the second pore water pressure sensor 10 after utilizing rubber pipette bulb water suction.Body change sensor the 14, first pore water pressure sensor 11 and the second pore water pressure sensor 10 are zeroed out after terminating by exhaust work.
(2) sample is installed.The sample that preprepared mates with base 5 size is taken out from moisture maintainer and weighs sample mass, saturated permeable stone is placed on base 5, filter paper and sample being put on permeable stone successively, sample top is sequentially placed filter paper, saturated permeable stone and sample top cap 4；
Utilization is held film cylinder and is installed rubber membrane, outer wall as sample holding chamber 19, place O in specimen mount 5 and sample top cap 4 with rubber membrane contact position simultaneously, ensure sealing, install after sample terminates and need to be installed by pressure chamber 1 with fixing bolt, open the steam vent 24 at pressure chamber top board 2, utilize pressure controller 16 to fill water in pressure chamber 1 by water injection hole 23, after water filling, close steam vent 24.
(3) saturated sample.Sample is carried out saturated by the methods such as utilized head is saturated, back-pressure is saturated.During anti-saturated sample, opening the first two-way valve the 9, second two-way valve the 8, first pore water pressure sensor 11 and the second pore water pressure sensor 10, the registration of the first pore water pressure sensor 11 and the second pore water pressure sensor 10 is close to completing to i.e. thinking that back-pressure is saturated after preset range simultaneously.
(4) saturation detection.By increasing predetermined confined pressure after the saturated end of back-pressure, the registration simultaneously surveying note the first pore water pressure sensor 11 and the second pore water pressure sensor 10 carries out saturation detection to sample.
(5) permeability test.Permeability test is started by arranging the first volume/stress controller 13 and the second volume/stress controller 12 and pressure controller 16 according to testing program, process of osmosis is opened body and becomes sensor 14, the change of volume during monitoring soil body penetration in real time, the precision that body becomes sensor 14 is higher, can be 1mm 3 In process of osmosis, volume of sample expands or contraction can cause and goes being decreased or increased of air water in confined pressure room, and goes the increase of air water in pressure chamber 1 or reduce and all can become sensor 14 by body, and body becomes sensor 14 and reacts the change of volume of sample by the change of the water yield in monitoring pressure chamber 1.
Finally, stored gathered data in real time by data acquisition unit 17, provide technological guidance for follow-up geotechnical engineering design.
This utility model is a kind of surveys the flexible wall permeameter that body becomes, and opens body and become sensor in process of osmosis, can monitor the volume of sample change in process of osmosis in real time；Back-pressure saturation history is opened the pore water pressure sensor that sample top is corresponding with bottom conduit, utilizes pore water water pressure stationary value that data acquisition unit collects as the quantitative measurement standard of the saturated end of back-pressure；There is provided various sizes of sample holding chamber, it is achieved the infiltration coefficient monitoring of various sample in Geotechnical Engineering related specifications.
Claims (7)
1. can survey the flexible wall permeameter that body becomes, including pressure chamber, described pressure chamber top be pressure chamber top board, bottom be pressure chamber base plate, sample holding chamber is installed in described pressure chamber, described sample holding chamber top is provided with top cap, bottom is provided with base, it is characterised in that
Also include body and become sensor and data acquisition unit,
Described body becomes sensor and is arranged on described pressure chamber top board and connects by pipeline and described pressure chamber are internal, and described body becomes sensor and described data acquisition unit connecting communication.
A kind of flexible wall permeameter surveying body change, it is characterised in that also include that pressure controller, described pressure controller are connected with the water injection hole on described pressure chamber top board, be additionally provided with steam vent on described pressure chamber top board.
A kind of flexible wall permeameter surveying body change, it is characterized in that, described top cap is provided with first row water hole, described base has the first inlet opening, described first row water hole is connected with the first pore water pressure sensor, described first inlet opening is connected with the second pore water pressure sensor, described first pore water pressure sensor connect and described second pore water pressure sensor all with described data acquisition unit connecting communication.
A kind of flexible wall permeameter surveying body change, it is characterized in that, first two-way valve is installed between described first row water hole and described first pore water pressure sensor, the second two-way valve is installed between described first inlet opening and described second pore water pressure sensor.
A kind of flexible wall permeameter surveying body change, it is characterized in that, described top cap is also equipped with second row water hole, described base is also equipped with the second inlet opening, described second row water hole is connected with the first volume/stress controller, described second inlet opening is connected with the second volume/stress controller, described first volume/stress controller and described second volume/stress controller and described data acquisition unit connecting communication.
A kind of flexible wall permeameter surveying body change, it is characterized in that, between described second row water hole and described first volume/stress controller, the first three-way valve is installed, between described second inlet opening and the second volume/stress controller, the second three-way valve is installed.
A kind of flexible wall permeameter surveying body change, it is characterised in that the sidewall internal diameter of described sample holding chamber, top cap internal diameter are corresponding with base inner diameter, and have several dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620330000.2U CN205607820U (en) | 2016-04-19 | 2016-04-19 | Flexible wall infiltration appearance that measurable body becomes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620330000.2U CN205607820U (en) | 2016-04-19 | 2016-04-19 | Flexible wall infiltration appearance that measurable body becomes |
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| CN201620330000.2U Expired - Fee Related CN205607820U (en) | 2016-04-19 | 2016-04-19 | Flexible wall infiltration appearance that measurable body becomes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806766A (en) * | 2016-04-19 | 2016-07-27 | 兰州大学 | Flexible wall permeameter capable of measuring volume changes |
| CN107389530A (en) * | 2017-08-11 | 2017-11-24 | 上海岩土工程勘察设计研究院有限公司 | A kind of Dispersion Test equipment suitable for hypotonicity soil |
| CN107505244A (en) * | 2017-08-11 | 2017-12-22 | 上海岩土工程勘察设计研究院有限公司 | A kind of Dispersion Test method suitable for hypotonicity soil |
| CN108982325A (en) * | 2018-07-30 | 2018-12-11 | 浙江大学 | The antifouling barrier materials chemistry compatibility test device and method in underground |
-
2016
- 2016-04-19 CN CN201620330000.2U patent/CN205607820U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806766A (en) * | 2016-04-19 | 2016-07-27 | 兰州大学 | Flexible wall permeameter capable of measuring volume changes |
| CN105806766B (en) * | 2016-04-19 | 2019-01-18 | 兰州大学 | A kind of flexible wall permeameter for surveying body change |
| CN107389530A (en) * | 2017-08-11 | 2017-11-24 | 上海岩土工程勘察设计研究院有限公司 | A kind of Dispersion Test equipment suitable for hypotonicity soil |
| CN107505244A (en) * | 2017-08-11 | 2017-12-22 | 上海岩土工程勘察设计研究院有限公司 | A kind of Dispersion Test method suitable for hypotonicity soil |
| CN108982325A (en) * | 2018-07-30 | 2018-12-11 | 浙江大学 | The antifouling barrier materials chemistry compatibility test device and method in underground |
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| 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: 20160928 Termination date: 20190419 |