CN202453134U - Penetrating-stretching type pore water pressure measuring device - Google Patents
Penetrating-stretching type pore water pressure measuring device Download PDFInfo
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- CN202453134U CN202453134U CN2012200441693U CN201220044169U CN202453134U CN 202453134 U CN202453134 U CN 202453134U CN 2012200441693 U CN2012200441693 U CN 2012200441693U CN 201220044169 U CN201220044169 U CN 201220044169U CN 202453134 U CN202453134 U CN 202453134U
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Abstract
The utility model relates to a penetrating-stretching type pore water pressure measuring device and a measuring method. A protruding segment of a conical penetrating head is inserted into a strainer pipe and connected with the strainer pipe through threads or pins, a sleeve is mounted outside the strainer pipe, matched with the strainer pipe in a sliding mode and pressed tightly on a shoulder of the conical penetrating head through a gasket, and the bottom end of a duct is arranged at the upper end of the sleeve through threads or is embedded at the upper end. According to the penetrating-stretching type pore water pressure measuring device and a measuring method, the problems of the complicated pore water pressure measuring and the indirect data in saturation soft soil distributing areas is solved, the device is particularly applicable to the monitoring and measuring of fine grained soil layer pore water pressure of the causes of delta facies, oxbow lake facies, lake facies, lagoon facies, swamp facies and the like of quaternary rivers, the measuring of phreatic water level and perched water level of ground water and confined water head, and the water quality stratification monitoring and sampling of the groundwater environment. Compared with the prior art, the device is simple in structure, low in cost and practical and convenient; the measuring method is simple to implement, convenient to operate and reliable in data.
Description
Technical field
The utility model relates to a kind of monitoring instrument, especially relates to a kind of direct-type measurement mechanism of measuring soil layer mesoporosity water pressure.
Background technology
Engineering construction area of activities in full water weak soil distributive province often needs the dynamic change of monitoring soil body mesoporosity water pressure and underground water table.Like monitoring dam foundation pore water pressure when seasonable in the construction of building a dam of weak soil distributive province hydraulic engineering, decide construction speed according to the dynamic change of the pore water pressure of different time sections; House floor constructure engineering aspect especially the soft soil foundation layering build fill out or during excavation of foundation pit underground monitoring pore water pressure also be like this; Existing monitoring pore water pressure metering system method commonly used has two kinds, and a kind of is to be utilized in to bury pore water pressure sensor in the boring underground, and another kind is to bury piezometric tube underground.The former utilizes wired conduction pattern, and the pore water pressure sensor sense film deformation signal of popping one's head in is converted into the electric signal of resistance variations, gives the user with electrical signal transfer then; Defective is that the method is through indirect metering system; The data of being gathered receive many factor affecting, and variability is big, like the problem of aging of sensor; Expensive cost issues, the short-term that can only be suitable in priority project is used; The latter is that piezometric tube is buried in layering underground before engineering construction, and then measures pore water pressure with pore pressure gauge, and shortcoming is be difficult for to ensure that piezometric tube is provided with requirement, also directly affects the Monitoring Data result like the leakproofness of verticality, sealing quality and connectedness etc.
Summary of the invention
The purpose of the utility model just is the deficiency to above-mentioned prior art, and a kind of injection-drawing pore water pressure force measuring device is provided;
The objective of the invention is to realize through following technical scheme:
Injection-drawing pore water pressure force measuring device; Be that convex section by taper injection 4 inserts filter pipe 2; Be connected with filter pipe 2 through screw thread or pin, the filter pipe 2 outer sleeve pipes 3 that are equipped with, filter pipe 2 is slidingly matched with sleeve pipe 3; Sleeve pipe 3 is pressed on the shoulder with taper injection 4 through packing ring 5, and conduit 6 bottoms are through screw thread or be nested in sleeve pipe 3 upper ends and constitute.
Filter pipe 2 is provided with infiltration 7, and infiltration hole 7 distributes or distributes arbitrarily in filter pipe 2 equal intervals, the diameter 1-2mm in infiltration hole 7, and the spacing 1-5cm in infiltration hole 7, the diameter 2.0cm of filter pipe 2, filter pipe 2 is selected from pvc pipe or metal tube.
Beneficial effect: the utility model has solved the monitoring pore water pressure measuring complex in full water weak soil distribution area; The roundabout problem of data; Be particularly useful for Quaternary system fluvial-delta phase, yoke lacustrine facies, lacustrine facies, lagoonal facies and marsh and equate the fine grained soil formation pore water pressure monitoring measurement of the origin cause of formation and the measurement of phreatic phreatic table, perched water level and piestic water head, the water quality hierarchical monitor and the sampling of groundwater monitoring and groundwater environment.Compared with prior art, apparatus structure is simple, and is with low cost, practical and convenient; The easy easy enforcement of its measuring method, easy to operate, data are reliable.
Description of drawings
Accompanying drawing 1 is injection-drawing pore water pressure force measuring device structural drawing
2 filter pipes, 3 sleeve pipes, 4 taper injection heads, 5 packing rings, 6 conduits, 7 infiltration holes
Embodiment:
Do further detailed description below in conjunction with accompanying drawing and embodiment:
Injection-drawing pore water pressure force measuring device comprises also comprising the underground water level measurement meter.Injection-drawing pore water pressure force measuring device bottom is taper injection 4; The convex section of taper injection 4 inserts filter pipe 2, is connected with filter pipe 2 through screw thread or pin, and filter pipe 2 is provided with treatment hole 7; Twine filter paper outward; On the shoulder of taper injection 4 packing ring 5 is housed, sleeve pipe 3 is pressed above that, and filter pipe 2 is slidingly matched with sleeve pipe 3.Sleeve pipe 3 bottoms freely contact with taper injection 4 circular bead surface; Be provided with annular seal packing ring 5 between the two; To guarantee in injection extrusion process, having reliable tightness; Stop non-test section underground water or seepage flow get in pipe, and can ensure when conduit 6 promotes with sleeve pipe 3 connectedness of separating back test section soil layer pore water infiltration filter pipe 2 with conical head injection 4.Earlier injection-drawing pore water pressure force measuring device is assembled before the test; Utilize static(al) injection equipment or knocker to squeeze on the projected depth that is pressed into test beds; Upwards promote conduit 6 about 100-200mm then; Make its together with outer layer sleeve 3 and taper injection 4 separate, let test section soil layer mesoporosity water infiltrate the internal layer filter pipe, promptly accomplish the setting that pore water pressure is measured.In the test, pore water pressure is measured and can be converted the pore water pressure value that obtains the test section soil layer with this at last through traditional millivolt amp gauge underground water level measurement method measuring guide inner pore rise waterborne.
Injection-drawing pore water pressure force measuring device; Be that convex section by taper injection 4 inserts filter pipe 2; Be connected with filter pipe 2 through screw thread or pin, the filter pipe 2 outer sleeve pipes 3 that are equipped with, filter pipe 2 is slidingly matched with sleeve pipe 3; Sleeve pipe 3 is pressed on the shoulder with taper injection 4 through packing ring 5, and conduit 6 bottoms are through screw thread or be nested in sleeve pipe 3 upper ends and constitute.
Filter pipe 2 is provided with infiltration 7, and infiltration hole 7 distributes or distributes arbitrarily in filter pipe 2 equal intervals, the diameter 1-2mm in infiltration hole 7, and the spacing 1-5cm in infiltration hole 7, the diameter 2.5cm of filter pipe 2, filter pipe 2 is selected from pvc pipe or metal tube.
Embodiment 1
In the building site, Jilin, earlier taper injection 4 is connected with filter pipe 2 through pin, filter pipe 2 is a pvc pipe; Filter pipe 2 is outer to be tied with filter paper, again sleeve pipe 3 is sleeved on filter pipe 2 outsides, and sleeve pipe 3 is pressed on the shoulder with taper injection 4 through packing ring 5; Filter pipe 2 is slidingly matched with sleeve pipe 3, conduit 6 bottoms through be nested in sleeve pipe 3 above, the diameter 2.0cm of filter pipe 2; The diameter 1mm in the infiltration hole 7 on the filter pipe 2, the spacing 2cm in infiltration hole 7
Embodiment 2
The building site of excavation of foundation pit in Tianjin; Earlier taper injection 4 is connected with filter pipe 2 through screw thread or pin; Conduit 6 bottoms through screw thread or be nested in sleeve pipe 3 above; The outer sleeve pipes 3 that are equipped with of filter pipe 2, filter pipe 2 is slidingly matched with sleeve pipe 3, and sleeve pipe 3 is pressed on the shoulder with taper injection 4 through packing ring 5 and constitutes.
Filter pipe 2 is provided with infiltration hole 7, and infiltration hole 7 distributes or irregular distribution in filter pipe 2 equal intervals, the diameter 2mm in infiltration hole 7; The spacing 2cm in infiltration hole 7; The diameter 2.0cm of filter pipe 2 is tied with filter paper outside the filter pipe 2, and filter pipe 2 is the pipe or the metal tube of pvc pipe, polyesters.
The Tibet reservoir; Earlier taper injection 4 is connected with filter pipe 2 through screw thread or pin, conduit 6 bottoms through screw thread or be nested in sleeve pipe 3 above, filter pipe 2 is equipped with sleeve pipes 3 outward; Filter pipe 2 is slidingly matched with sleeve pipe 3, and sleeve pipe 3 is pressed on the shoulder with taper injection 4 through packing ring 5 and constitutes.
Filter pipe 2 is provided with the hole 7 of seeping water, and infiltration hole 7 distributes or irregular distribution in filter pipe 2 equal intervals, the diameter 2mm in infiltration hole 7, and the spacing 2cm in infiltration hole 7, the diameter 2.0cm of filter pipe 2 is tied with filter paper outside the filter pipe 2, and filter pipe 2 is an iron pipe.
Claims (2)
1. injection-drawing pore water pressure force measuring device; It is characterized in that, be by the convex section insertion filter pipe (2) of taper injection head (4), is connected with filter pipe (2) through screw thread or pin; The outer sleeve pipe (3) that is equipped with of filter pipe (2); Filter pipe (2) and sleeve pipe (3) are slidingly matched, and sleeve pipe (3) is pressed on the shoulder with taper injection head (4) through packing ring (5), and conduit (6) bottom is through screw thread or be nested in sleeve pipe (3) upper end and constitute.
2. according to the described injection of claim 1-drawing pore water pressure force measuring device; It is characterized in that filter pipe (2) is provided with infiltration hole (7), infiltration hole (7) distributes or distributes arbitrarily in filter pipe (2) equal intervals; The diameter 1-2mm in infiltration hole (7); The spacing 1-5cm in infiltration hole (7), the diameter 2.0cm of filter pipe (2), filter pipe (2) is selected from pvc pipe or metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200441693U CN202453134U (en) | 2012-02-12 | 2012-02-12 | Penetrating-stretching type pore water pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200441693U CN202453134U (en) | 2012-02-12 | 2012-02-12 | Penetrating-stretching type pore water pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453134U true CN202453134U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200441693U Expired - Fee Related CN202453134U (en) | 2012-02-12 | 2012-02-12 | Penetrating-stretching type pore water pressure measuring device |
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| CN (1) | CN202453134U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564676A (en) * | 2012-02-12 | 2012-07-11 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN106052946A (en) * | 2016-07-27 | 2016-10-26 | 西南交通大学 | Self entering type surrounding rock pore water pressure sensing device |
| CN108195496A (en) * | 2017-11-29 | 2018-06-22 | 中国神华能源股份有限公司 | Measuring apparatus and measuring method |
-
2012
- 2012-02-12 CN CN2012200441693U patent/CN202453134U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564676A (en) * | 2012-02-12 | 2012-07-11 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN102564676B (en) * | 2012-02-12 | 2014-08-13 | 吉林大学 | Penetrating-stretching type pore water pressure measurement device and measurement method thereof |
| CN106052946A (en) * | 2016-07-27 | 2016-10-26 | 西南交通大学 | Self entering type surrounding rock pore water pressure sensing device |
| CN108195496A (en) * | 2017-11-29 | 2018-06-22 | 中国神华能源股份有限公司 | Measuring apparatus and measuring method |
| CN108195496B (en) * | 2017-11-29 | 2020-02-18 | 中国神华能源股份有限公司 | Measuring device and measuring method for measuring effective force |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20140212 |