CN204960924U - Ground water level measuring device under vacuum pre -compaction ground - Google Patents
Ground water level measuring device under vacuum pre -compaction ground Download PDFInfo
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- CN204960924U CN204960924U CN201520607036.6U CN201520607036U CN204960924U CN 204960924 U CN204960924 U CN 204960924U CN 201520607036 U CN201520607036 U CN 201520607036U CN 204960924 U CN204960924 U CN 204960924U
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Abstract
The utility model discloses a ground water level measuring device under vacuum pre -compaction ground, including airtight liquid level hose, the insulating floating block that the water -level fluctuation was freely floated is from top to bottom followed to insulator spindle and the suit located in the airtight liquid level hose on the insulator spindle, the winding of even interval has the resistance wire on the insulator spindle, on the insulating floating block hookup have with the insulator spindle on the conductive contact piece of resistance wire slidingtype contact, the resistance wire of conductive contact piece and insulator spindle top department is connected in order to constitute closed -loop with outside resistance meter through the wire, because insulating floating block freely floats from top to bottom along with the water -level fluctuation, make the resistance wire length that inserts among the closed -loop change, thereby rely on the change that relation between resistance wire resistance and the ground water level value can accurate measurement ground water level, the simple high efficiency of methods of measurement. For the measurement of current closed ground water level, avoided airtight liquid level hose to pierce through the vacuum membrane that destroys the top, guaranteed vacuum pressure's seal, measure more accurate stability.
Description
Technical field
The utility model relates to underground water level measurement device technique field, particularly a kind of measurement mechanism for measuring groundwater table under Soft Ground Improved By Vacuum Preloading.
Background technology
Under normal atmosphere pressure condition, groundwater table many employings opened type water level pipe is measured.For the underground water level measurement in Soft Ground Improved By Vacuum Preloading stabilization zone, if still adopt opened type water level pipe to measure, because water level pipe is connected with the external world, the inevitable rising instantaneously of water level pipe vacuum pressure being positioned at Soft Ground Improved By Vacuum Preloading stabilization zone becomes normal ambient pressure, groundwater table is inevitable to decline rapidly, and the groundwater table now recorded not is the actual value under vacuum pressure effect.Therefore, how to measure under the airtight condition be not in communication with the outside, i.e. closed underground water level measurement technology, become the key issue of WATER LEVEL CHANGES under research vacuum pressure effect.
For closed underground water level measurement, following several settling mode is there is: as Chinese patent CN2777511Y discloses a kind of tester for underground water level in vacuum prepressing reinforced area in prior art, this testing arrangement is the underground water place value under indirect calculation goes out vacuum state, and its testing arrangement is complicated, calculation procedure is loaded down with trivial details, the many factors that affects result of calculation accuracy, also lack intuitive; As Chinese patent CN103592002A also discloses a kind of the groundwater table testing arrangement and the using method thereof that are applicable to Soft Ground Improved By Vacuum Preloading treatment technology, this testing arrangement utilizes laser distance measuring principle to test, but this measuring method complex operation, measure efficiency low; As geotechnical engineering journal (2013,35(S2): 684-688) also disclose a kind of bar type vacuum preloading groundwater table tester, but this tester complex structure, and certainty of measurement is limited is only 5cm.And above-mentioned several metering systems all exist a common defect: water level pipe upper end is all destroyed and penetrated vacuum diaphragm, although adopt different encapsulating methods to prevent gas leakage, actual seal effect is difficult to ensure.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of good airproof performance, measure underground water level measurement device under Soft Ground Improved By Vacuum Preloading accurately.
For solving the problems of the technologies described above adopted technical scheme: underground water level measurement device under a kind of Soft Ground Improved By Vacuum Preloading, comprise airtight water level pipe, be located at the insulating bar in airtight water level pipe and be sleeved on the insulation floating block freely up and down floated on insulating bar and with SEA LEVEL VARIATION, on described insulating bar, uniform intervals is wound with resistance wire, described insulation floating block is connected with the conductive contact film contacted with the resistance wire slidingtype on insulating bar, described conductive contact film is connected to form closed-loop path with outside resistance meter by wire with the resistance wire of insulating bar top end.
Further, described airtight water level pipe top is stretched out one section and is provided with air-vent.
Further, described airtight water level pipe wall is spaced is distributed with multiple permeable hole and is coated with permeable cloth.
Further, described airtight water level pipe top socket supports and holds up component.
Further, in described airtight water level pipe outer, axially spaced-apart is set with multiple garter spring, and each described garter spring is formed down the anchor structure inserted and embed the soil body.
Further, described airtight water level pipe top and bottom are respectively equipped with seal cover, and described insulating bar two ends are connected to two seal cover centers and are fixed on airtight water level pipe center to make insulating bar.
Beneficial effect: the floating block that insulate in underground water level measurement device under this Soft Ground Improved By Vacuum Preloading freely up and down floats with SEA LEVEL VARIATION, and then the resistance wire length in access closed-loop path changes, get final product the change of Measurement accuracy groundwater table again by demarcating rear relation between resistance wire resistance and underground water place value, measuring method is simply efficient.And, relative to existing closed underground water level measurement, avoid airtight water level pipe and penetrate the vacuum diaphragm destroying top, ensure that the seal of vacuum pressure, measure more precise and stable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further;
Fig. 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
With reference to Fig. 1, underground water level measurement device under a kind of Soft Ground Improved By Vacuum Preloading of the utility model, comprise the airtight water level pipe 1 be embedded under Soft Ground Improved By Vacuum Preloading, be located at the insulating bar 2 in airtight water level pipe 1 and be sleeved on the insulation floating block 3 freely up and down floated on insulating bar 2 and with SEA LEVEL VARIATION, on insulating bar 2, uniform intervals is wound with resistance wire 4, insulation floating block 3 is connected with the conductive contact film 5 contacted with resistance wire 4 slidingtype on insulating bar 2, conductive contact film 5 is connected to form closed-loop path with outside resistance meter 6 by wire with the resistance wire of insulating bar 2 top end.
In the present embodiment, top and the bottom of airtight water level pipe 1 are respectively equipped with seal cover 7, the two ends of insulating bar 2 embed and are connected to seal cover 7 center, thus make insulating bar 2 vertically can be fixed on airtight water level pipe 1 center, resistance wire 4 adopts copper wire or nichrome wire, and uniform close is wrapped on insulating bar 2, and the center hollow out of insulation floating block 3 is through insulating bar 2, adopt the light weight insulating material that density ratio water is little, insulation floating block 3 is freely up and down floated along with SEA LEVEL VARIATION.Soft Ground Improved By Vacuum Preloading one section is stretched out on the top of airtight water level pipe 1, air-vent 8 is had at airtight water level pipe 1 top end, thus overpressure is consistent with the outer vacuum pressure of pipe, in addition, the wall of airtight water level pipe 1 is also spaced and is distributed with multiple permeable hole 9 and is coated with permeable cloth, the permeable hole 9 formed ensure that in pipe, water level is consistent with the outer actual water level of pipe, and the permeable cloth of permeable hole 9 outer cladding effectively prevents aperture from being affected permeable effect by soil body Particle Blocking.Airtight water level pipe 1 top is also socketed to support and holds up component 10, supporting and holding up component 10 longitudinal cross-section is inverted trapezoidal, make airtight water level pipe 1 top and vacuum diaphragm 11 joint form gas connected space to ensure that overpressure is consistent with the outer vacuum pressure of pipe, turn avoid airtight water level pipe 1 and penetrate destruction vacuum diaphragm 11.
The measuring principle of the utility model underground water level measurement device is as follows: the insulation floating block 3 on insulating bar 2 freely up and down can float with SEA LEVEL VARIATION, and then resistance wire 4 length accessed in closed-loop path is changed, thus change the reading of non-essential resistance tester 6, get final product the change of Measurement accuracy groundwater table again by demarcating rear relation between resistance wire resistance and underground water place value, measuring method is simply efficient.
Wherein, resistance meter 6 is arranged on outside works area, wire is buried underground along sand cushion surface after being drawn by the air-vent 8 of airtight water level pipe 1 top end, under wear sealing ditch until be connected with resistance meter 6 outside works area, avoid the vacuum diaphragm 11 destroying top covering, ensure that the seal of vacuum pressure, make measurement more precise and stable.
As preferably, in airtight water level pipe 1 outer, axially spaced-apart is set with multiple garter spring 12, each garter spring 12 is formed down the anchor structure inserted and embed the soil body, and this anchor structure is the anchor pole 13 pouring into the soil body obliquely, thus ensure that airtight water level pipe 1 is consistent with the sedimentation of surrounding soil.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that described technical field those of ordinary skill possesses, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (6)
1. underground water level measurement device under a Soft Ground Improved By Vacuum Preloading, it is characterized in that: comprise airtight water level pipe, be located at the insulating bar in airtight water level pipe and be sleeved on the insulation floating block freely up and down floated on insulating bar and with SEA LEVEL VARIATION, on described insulating bar, uniform intervals is wound with resistance wire, described insulation floating block is connected with the conductive contact film contacted with the resistance wire slidingtype on insulating bar, described conductive contact film is connected to form closed-loop path with outside resistance meter by wire with the resistance wire of insulating bar top end.
2. underground water level measurement device under Soft Ground Improved By Vacuum Preloading according to claim 1, is characterized in that: described airtight water level pipe top is stretched out one section and is provided with air-vent.
3. underground water level measurement device under Soft Ground Improved By Vacuum Preloading according to claim 1 and 2, is characterized in that: described airtight water level pipe wall is spaced and is distributed with multiple permeable hole and is coated with permeable cloth.
4. underground water level measurement device under Soft Ground Improved By Vacuum Preloading according to claim 1 and 2, is characterized in that: described airtight water level pipe top socket supports and holds up component.
5. underground water level measurement device under Soft Ground Improved By Vacuum Preloading according to claim 1, is characterized in that: in described airtight water level pipe outer, axially spaced-apart is set with multiple garter spring, and each described garter spring is formed down the anchor structure inserted and embed the soil body.
6. underground water level measurement device under Soft Ground Improved By Vacuum Preloading according to claim 1, it is characterized in that: described airtight water level pipe top and bottom are respectively equipped with seal cover, described insulating bar two ends are connected to two seal cover centers and are fixed on airtight water level pipe center to make insulating bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607036.6U CN204960924U (en) | 2015-08-12 | 2015-08-12 | Ground water level measuring device under vacuum pre -compaction ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607036.6U CN204960924U (en) | 2015-08-12 | 2015-08-12 | Ground water level measuring device under vacuum pre -compaction ground |
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| Publication Number | Publication Date |
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| CN204960924U true CN204960924U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520607036.6U Active CN204960924U (en) | 2015-08-12 | 2015-08-12 | Ground water level measuring device under vacuum pre -compaction ground |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741216A (en) * | 2017-11-17 | 2018-02-27 | 中南大学 | A kind of electromagnetic type solum settlement measurement apparatus |
| CN109577953A (en) * | 2018-12-29 | 2019-04-05 | 青海岩土工程勘察咨询有限公司 | A kind of drilling liquid monitoring device |
-
2015
- 2015-08-12 CN CN201520607036.6U patent/CN204960924U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741216A (en) * | 2017-11-17 | 2018-02-27 | 中南大学 | A kind of electromagnetic type solum settlement measurement apparatus |
| CN109577953A (en) * | 2018-12-29 | 2019-04-05 | 青海岩土工程勘察咨询有限公司 | A kind of drilling liquid monitoring device |
| CN109577953B (en) * | 2018-12-29 | 2023-12-22 | 青海岩土工程勘察咨询有限公司 | Drilling fluid liquid level monitoring device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District Patentee after: Guangzhou municipal engineering design and Research Institute Co., Ltd. Address before: 510060, No. 348, East Ring Road, Yuexiu District, Guangdong, Guangzhou Patentee before: Guangzhou City Engineering Design studies total institute |