CN104849195A - Permeation detector and water drain plate permeation testing method - Google Patents
Permeation detector and water drain plate permeation testing method Download PDFInfo
- Publication number
- CN104849195A CN104849195A CN201510278584.3A CN201510278584A CN104849195A CN 104849195 A CN104849195 A CN 104849195A CN 201510278584 A CN201510278584 A CN 201510278584A CN 104849195 A CN104849195 A CN 104849195A
- Authority
- CN
- China
- Prior art keywords
- pressure chamber
- water
- sand
- test trough
- permeable membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a permeation detector. An upper pressure chamber and a lower pressure chamber are communicated in a connection manner, a gas inlet is formed in the lower pressure chamber and is connected with a gas outlet of a gas pump, a testing tank is arranged at the connecting position of the upper pressure chamber and the lower pressure chamber, the testing tank is connected with a measuring cup, a pressure bearing membrane and a water permeable membrane are arranged on the upper pressure chamber and the lower pressure chamber, the pressure bearing membrane is away from the connecting position of two pressure chambers, the water permeable membrane is close to the connecting position of the two pressure chambers, and a water inlet is formed between the pressure bearing membrane and the water permeable membrane and is connected with a water inlet box. The invention also provides a detection method by use of the detector. The detection method comprises the steps of mounting a double-model structure, placing sandy soil, mounting a testing sample, introducing water, pressurizing and the like. The double-model structure is adopted to prevent permeation water from permeating from one end of the testing sample, the permeation water permeates into the testing sample after spreading the whole water permeable membrane, and the conformity of the testing result and the practical working condition is improved; a sandy soil mounting groove can simulate the working state of a in-situ water drain plate really; and the testing tank can be opened conveniently for containing the testing sample due to the structures of the upper pressure chamber and the lower pressure chamber.
Description
Technical field
The present invention relates to the construction quality monitoring technical field of Geotechnical Engineering, particularly relate to a kind of be applicable to use in reinforced soft soil ground engineering drain bar or the Liquid penetrant testing instrument of sand and drain bar penetrant detecting method.
Background technology
Inspection of engineering quality code requirement, when drain bar reinforcing soft ground, will detect the quality of drain bar, and wherein one is detected drain bar permeability exactly.
The drain bar Liquid penetrant testing instrument of current domestic use all adopts Zheng Tong pressure chamber form, and test trough is offered at the center covered in the left and right of cylinder.During detection, drain bar rubber diaphragm is packaged, insert in test trough, the notch of pressure chamber, test trough is sealed up by rubber diaphragm upper and lower opening respectively, prevents gas leakage, as Fig. 1, then direct to drain bar water filling, other end water receiving, the seepage flow in the unit of account time.There is following shortcoming in this tester: the sealing difficulty that 1, drain bar is upper and lower; 2, when inserting test trough, rubber diaphragm very easily damages; 3, actual infiltration water does not enter from plate two ends, but infiltrated from drain bar side by sand or weak soil, metering system and real work situation are not inconsistent, and comprehensively can not pass judgment on the actual working state of drain bar.
Summary of the invention
The object of this invention is to provide a kind of Liquid penetrant testing instrument, infiltration water can put on the whole plane of sample uniformly, improves the validity of penetration testing.
In order to achieve the above object, the invention provides following technical scheme:
A kind of Liquid penetrant testing instrument, comprise pressure chamber and test trough, pressure chamber offers test trough, pressure chamber offers air intake opening, and also comprise two membrane structure, two film comprises pressure-bearing film and water permeable membrane, the upper and lower side of test trough all arranges two mode field, and pressure-bearing film is away from test trough, water permeable membrane, near test trough, offers water inlet between pressure-bearing film and water permeable membrane.By two mode field, infiltration water is injected in the middle of two mode field.Pressure-bearing film is waterproof, and water permeable membrane can be permeable.Certain effect is blocked because water permeable membrane has, water can not infiltrate from one end of sample quickly, but full whole water permeable membrane is flowed while infiltration sample, and permeate toward sample direction water permeable membrane gradually, thus avoid infiltration water and infiltrate from one end of sample, improve the result of test and the compatibility of real work situation.
Further, pressure chamber comprises upper and lower pressure chamber, and upper and lower pressure chamber is connected by detachable mode, and test groove is in the junction of described upper and lower pressure chamber.Directly the test trough between pressure chamber can be opened by detachable mode, facilitate sample to be placed in test trough, two mode field can not cause when inserting test trough and break, and easily seals between test trough and sample.
Further, also comprise sand mounting groove, sand mounting groove is arranged between test trough and two mode field.The sand material of the onsite application such as normal sand, weak soil can be placed in sand mounting groove.After infiltration water enters from two mode field, first flow to again on sample by the sand in sand mounting groove.Like this can the duty of simulated field drain bar truly, improve the accuracy of test result further.
Further, also comprise measuring equipment, measuring equipment is connected with test trough by pipeline.Sample is placed in test trough, is flow in measuring equipment after infiltration water infiltrates from sample by pipeline, thus tests out the infiltration capacity of sample.
Further, also comprise sealing strip, sealing strip is arranged in the junction of upper and lower pressure chamber, test trough.By sealing strip, the gap sealing between sample and pressure chamber, between test trough is got up, ensure that infiltration water effectively permeates toward sample direction.
Further, also comprise air pump, the gas outlet of air pump connects air intake opening.
Further, also comprise inlet water tank, the water delivering orifice of inlet water tank connects water inlet.
Further, also comprise device for fastening, upper and lower pressure chamber is connected by device for fastening.
Further, upper and lower pressure chamber is connected through the hinge, and device for fastening is butterfly bolt.Adopt hinge conveniently the test trough between Liang Ge pressure chamber to be opened and closed, butterfly bolt is convenient to be connected and fixed pressure chamber, test trough.
The present invention also provides a kind of penetrant detecting method using the drain bar of above-mentioned tester, comprises following detecting step:
1) between sand mounting groove and pressure chamber, install two mode field, two film comprises pressure-bearing film and water permeable membrane, and make the pressure-bearing film in two mode field away from the junction of upper and lower pressure chamber, water permeable membrane is near the junction of upper and lower pressure chamber;
2) on the sand mounting groove of downforce room, place sand, the position of sand and the plane of test trough are maintained an equal level, and records the weight of sand;
3) sample is placed in test trough, and places sand on the sand mounting groove of upward pressure room, and the weight of upward pressure room sand is the same with the sand weight of the sand mounting groove of downforce room;
4) upward pressure room and downforce are coupled together, test trough are combined,
5) in the water inlet in the middle of two mode field, infiltration water is added, and with measuring the infiltration water flowed out from sample;
6) pressurizeed in Liang Ge pressure chamber, and keep the water inlet of water inlet, simultaneously computing time;
7) measure within the unit interval, from sample, flow out infiltration water.
Beneficial effect of the present invention is:
1) adopt two mode field to avoid infiltration water to infiltrate from one end of sample, just infiltrate sample after making the full whole water permeable membrane of infiltration current, improve the result of test and the compatibility of real work situation.；
2) arranging sand mounting groove can the duty of simulated field drain bar truly, improves the accuracy of test result further;
3) test trough between pressure chamber can be opened by detachable mode, facilitate sample to be placed in test trough, two mode field can not cause when inserting test trough and break, and easily seals between test trough and sample;
4) by sealing strip, the gap sealing between sample and pressure chamber, between test trough is got up, ensure that infiltration water effectively can permeate toward sample direction.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of existing penetration testing instrument;
Fig. 2 is the structural representation of the present embodiment;
Fig. 3 is the construction profile of the present embodiment;
Fig. 4 is the A place enlarged drawing of Fig. 3;
Wherein, 1, water tank, 2, air pump, 3.1, upward pressure room, 3.2, downforce room, 4, two mode field, 4.1, pressure-bearing film, 4.2, water permeable membrane, 5, sand mounting groove, 6, test trough, 7, pipeline, 8, measuring cup, 9, rubber weather strip, 10, hinge, 11, water inlet, 12, air intake opening, 13, butterfly bolt.
Embodiment
Below in conjunction with accompanying drawing of the present invention, be clearly and completely described technical scheme of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Shown in composition graphs 2-4, a kind of Liquid penetrant testing instrument, comprises upward pressure room 3.1, downforce room 3.2, test trough 6, water tank 1, air pump 2, two mode field 4, sand mounting groove 5, measuring cup 8.Upward pressure room 3.1, downforce room 3.2 adopt the aluminium alloy of thick 20mm to make, and the xsect of upward pressure room 3.1, downforce room 3.2 is semicircle.Upward pressure room 3.1 is connected by hinge 10 with one end of downforce room 3.2, and the other end is connected by butterfly bolt 13.Upward pressure room 3.1 is connected rear formation xsect with downforce room 3.2 be circular tubular.The pressure chamber's diameter closed after closing is 200mm, high 300mm.Communicate between upward pressure room 3.1 with downforce room 3.2, downforce room 3.2 is offered air intake opening 12.Air intake opening 12 connects the gas outlet of air pump 2.
Test trough 6 is offered in upward pressure room 3.1 and the junction of downforce room 3.2.Gap between the junction of upward pressure room 3.1, downforce room 3.2 and test trough 6 arranges rubber weather strip 9.Test trough 6 is connected to measuring cup 8 by pipeline 7.
Upward pressure room 3.1 with downforce room 3.2 arrange two mode field 4.Two mode field 4 comprises the glued membrane pressure-bearing film 4.1 that thickness is 0.3mm, glued membrane water permeable membrane 4.2.Pressure-bearing film 4.1 is away from the junction of Liang Ge pressure chamber, and water permeable membrane 4.2 is near the junction of Liang Ge pressure chamber.Water inlet 11 is offered between pressure-bearing film 4.1 and water permeable membrane 4.2.Water inlet 11 connects the water delivering orifice of inlet water tank 1.
Be sand mounting groove 5 between the junction of upward pressure room 3.1, downforce room 3.2 and two mode field 4.The sand material of the onsite application such as normal sand, weak soil can be placed in sand mounting groove 5, can the duty of simulated field drain bar truly.
The present invention also provides a kind of penetrant detecting method of drain bar, and this detection method needs to use the equipment in above-described embodiment, and it comprises following detecting step:
1) in Liang Ge pressure chamber, install pressure-bearing film, water permeable membrane, make pressure-bearing film away from the junction of Liang Ge pressure chamber, water permeable membrane is near the junction of Liang Ge pressure chamber;
2) on the sand mounting groove of downforce room, place sand, the position of sand and the plane of test trough are maintained an equal level, and records the weight of sand;
3) be placed in test trough by sample, the length of sample is slightly longer than the length of pressure chamber, and places sand on the sand mounting groove of upward pressure room, and the weight of upward pressure room sand is the same with the sand weight of the sand mounting groove of downforce room;
4) upward pressure room and downforce are connected and fixed, test trough are combined,
5) infiltration water is added in the centre of pressure-bearing film and water permeable membrane, and with measuring the infiltration water flowed out from sample;
6) pressurizeed in Liang Ge pressure chamber, and keep the water inlet of water inlet, simultaneously computing time;
7) measure within the unit interval, from sample, flow out infiltration water.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (10)
1. a Liquid penetrant testing instrument, comprise pressure chamber and test trough, described pressure chamber offers test trough, described pressure chamber offers air intake opening, it is characterized in that: also comprise two membrane structure, described pair of film comprises pressure-bearing film and water permeable membrane, the upper and lower side of described test trough all arranges two mode field, and described pressure-bearing film is away from test trough, described water permeable membrane, near test trough, offers water inlet between described pressure-bearing film and water permeable membrane.
2. Liquid penetrant testing instrument according to claim 1, it is characterized in that: described pressure chamber comprises upper and lower pressure chamber, described upper and lower pressure chamber is connected by detachable mode, described test groove is in the junction of described upper and lower pressure chamber.
3. Liquid penetrant testing instrument according to claim 2, is characterized in that: also comprise sand mounting groove, described sand mounting groove is arranged between described test trough and two mode field.
4., according to the arbitrary described Liquid penetrant testing instrument of claim 1-3, it is characterized in that: also comprise measuring equipment, described measuring equipment is connected with described test trough by pipeline.
5. Liquid penetrant testing instrument according to claim 4, is characterized in that: also comprise sealing strip, and sealing strip is arranged in the junction of described upper and lower pressure chamber, test trough.
6. Liquid penetrant testing instrument according to claim 5, is characterized in that: also comprise air pump, and the gas outlet of described air pump connects air intake opening.
7. the Liquid penetrant testing instrument according to claim 5 or 6, is characterized in that: also comprise inlet water tank, and the water delivering orifice of described inlet water tank connects water inlet.
8. Liquid penetrant testing instrument according to claim 7, is characterized in that: also comprise device for fastening, and described upper and lower pressure chamber is connected by described device for fastening.
9. Liquid penetrant testing instrument according to claim 8, is characterized in that: described upper and lower pressure chamber is connected through the hinge, and described device for fastening is butterfly bolt.
10. use a drain bar penetrant detecting method for the arbitrary described Liquid penetrant testing instrument of claim 1-9, it is characterized in that, comprise following detecting step:
1) install pressure-bearing film and water permeable membrane, make pressure-bearing film away from the junction of upper and lower pressure chamber, water permeable membrane is near the junction of upper and lower pressure chamber;
2) on the sand mounting groove of downforce room, place sand, the position of sand and the plane of test trough are maintained an equal level, and records the weight of sand;
3) sample is placed in test trough, and places sand on the sand mounting groove of upward pressure room, and the weight of upward pressure room sand is the same with the sand weight of the sand mounting groove of downforce room;
4) upward pressure room and downforce are coupled together, test trough are combined,
5) in the water inlet in the middle of two mode field, infiltration water is added, and with measuring the infiltration water flowed out from sample;
6) pressurizeed in Liang Ge pressure chamber, and keep the water inlet of water inlet, simultaneously computing time;
7) measure within the unit interval, from sample, flow out infiltration water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278584.3A CN104849195A (en) | 2015-05-27 | 2015-05-27 | Permeation detector and water drain plate permeation testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278584.3A CN104849195A (en) | 2015-05-27 | 2015-05-27 | Permeation detector and water drain plate permeation testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104849195A true CN104849195A (en) | 2015-08-19 |
Family
ID=53849006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510278584.3A Pending CN104849195A (en) | 2015-05-27 | 2015-05-27 | Permeation detector and water drain plate permeation testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104849195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705608A (en) * | 2022-06-08 | 2022-07-05 | 江西省交通设计研究院有限责任公司 | Waterproof performance test device based on concave-convex drainage plates |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3645529B2 (en) * | 2002-02-18 | 2005-05-11 | 株式会社九州山光社 | Water container for testing moisture permeability of membrane |
| CN2816809Y (en) * | 2005-08-01 | 2006-09-13 | 上海市政工程设计研究院 | Device for detecting seepage coefficient and seepage-resisting gradient ratio |
| CN101285754A (en) * | 2008-05-14 | 2008-10-15 | 浙江大学 | Integral permeability testing machine for self circulation measuring for perpendicular and horizontal permeability coefficient |
| CN203261905U (en) * | 2013-05-24 | 2013-11-06 | 福建省亚热带植物研究所 | Afforestation water keeping bag capable of absorbing and releasing moisture repeatedly |
| CN103926182A (en) * | 2014-04-17 | 2014-07-16 | 中铁第四勘察设计院集团有限公司 | Permeability coefficient test method and test device under normal pressure |
| CN204882314U (en) * | 2015-05-27 | 2015-12-16 | 水利部农村电气化研究所 | Infiltration detector |
-
2015
- 2015-05-27 CN CN201510278584.3A patent/CN104849195A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3645529B2 (en) * | 2002-02-18 | 2005-05-11 | 株式会社九州山光社 | Water container for testing moisture permeability of membrane |
| CN2816809Y (en) * | 2005-08-01 | 2006-09-13 | 上海市政工程设计研究院 | Device for detecting seepage coefficient and seepage-resisting gradient ratio |
| CN101285754A (en) * | 2008-05-14 | 2008-10-15 | 浙江大学 | Integral permeability testing machine for self circulation measuring for perpendicular and horizontal permeability coefficient |
| CN203261905U (en) * | 2013-05-24 | 2013-11-06 | 福建省亚热带植物研究所 | Afforestation water keeping bag capable of absorbing and releasing moisture repeatedly |
| CN103926182A (en) * | 2014-04-17 | 2014-07-16 | 中铁第四勘察设计院集团有限公司 | Permeability coefficient test method and test device under normal pressure |
| CN204882314U (en) * | 2015-05-27 | 2015-12-16 | 水利部农村电气化研究所 | Infiltration detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705608A (en) * | 2022-06-08 | 2022-07-05 | 江西省交通设计研究院有限责任公司 | Waterproof performance test device based on concave-convex drainage plates |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588796B (en) | A kind of device of accurate quick measure soil permeability coefficient | |
| CN203732408U (en) | Testing device for permeation coefficient of pervious concrete | |
| CN105334142B (en) | A kind of experimental provision formed for simulating shield mud film | |
| CN105486840A (en) | Solidification and permeation combined experimental device | |
| CN107063972B (en) | It is a kind of often-varying head integration osmotic coefficient investigating device and its test method | |
| CN105158136A (en) | Determination method and testing apparatus for permeability coefficient of cement-based material | |
| CN105181549B (en) | Test the pilot system and method for injecting cement paste seepage flow and setting time characteristic | |
| CN108982327A (en) | A kind of damage concrete permeability detection device | |
| WO2013154360A3 (en) | Water leak-detecting ground water pressure testing apparatus | |
| CN1737530B (en) | Method for testing permeability coefficient and anti-pervasion gradient ratio | |
| CN206459937U (en) | A kind of packer permeability test device of engineering geological investigation | |
| CN105319113A (en) | Concrete test piece and device for testing and evaluating self-curing capacity for water seepage of crack, and test and evaluation method | |
| CN206020233U (en) | A kind of soil body osmotic coefficient measurement apparatus for being contemplated that sticking grain silting | |
| CN107255613A (en) | A kind of dynamic capillary force experimental evaluation system of reservoir rockses | |
| CN204882314U (en) | Infiltration detector | |
| CN108414416A (en) | A kind of more sample infiltration coefficients test and comparison means and method | |
| CN111337407B (en) | Device and method for testing impermeability and durability of precast concrete joint | |
| CN104849195A (en) | Permeation detector and water drain plate permeation testing method | |
| CN112525797A (en) | Soil body horizontal permeability coefficient testing device | |
| CN106501159A (en) | Particulate infiltration migration assay device and its method based on opposite opened osmos tube | |
| CN207882118U (en) | Measure the experimental rig of the long-term water permeability of pervious concrete | |
| CN207850876U (en) | A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube | |
| CN110296927A (en) | A kind of rock fracture permeability test device and method applying unidirectional confining pressure | |
| CN102890046B (en) | A kind of device and method detecting impermeable performance of impermeable sand | |
| CN208399335U (en) | A kind of crack rock high pressure permeability properties test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20180814 |
|
| AD01 | Patent right deemed abandoned |