CN103592002B - Groundwater level testing device applicable to vacuum preloading foundation treatment technology and using method of groundwater level testing device - Google Patents
Groundwater level testing device applicable to vacuum preloading foundation treatment technology and using method of groundwater level testing device Download PDFInfo
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- CN103592002B CN103592002B CN201310478672.9A CN201310478672A CN103592002B CN 103592002 B CN103592002 B CN 103592002B CN 201310478672 A CN201310478672 A CN 201310478672A CN 103592002 B CN103592002 B CN 103592002B
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- pipe
- water
- supervisor
- water level
- laser range
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Abstract
The invention discloses a groundwater level testing device comprising a water level pipe, an emission sheet, a light-transmitting sheet and a laser range finder. The water level pipe is formed by coaxial connection of a main pipe located on the upper portion and a filter pipe located on the lower portion, the outer wall of the filter pipe is coated with a drain board filter membrane, and the bottom of the filter pipe is closed. The emission sheet floats on the water surface in the water level pipe; the light-transmitting sheet covers and is fixed on the pipe top of the water level pipe; the laser range finder is located above the light-transmitting sheet for testing. Test is performed based on the laser range finding principle, a test method is simple and convenient, test cost is low, and test results are visual, true and reliable, so that groundwater level change rules in a foundation can be acquired accurately.
Description
Technical field
The present invention relates to Soft Ground Improved By Vacuum Preloading processing technology field, specifically one kind are applied at Soft Ground Improved By Vacuum Preloading
The Novel underground test device for water level of reason technology and its using method.
Background technology
The Changing Pattern of level of ground water during research vacuum pre-press reinforcing, is conducive to recognizing vacuum method further and adds
Gu the mechanism of ground, it is more beneficial for the evaluation to vacuum pre-press reinforcing effect and analysis.However, with regard to vacuum pre-press reinforcing process
The Changing Pattern of middle level of ground water, is all the focus of industry arguement and difference all the time.At present, mainly there are 3 kinds of viewpoints, respectively
Rise for level of ground water, level of ground water is constant and level of ground water declines.Therefore, how simply and effectively to obtain vacuum pre-
The real change rule of level of ground water in pressure ground, it has also become industry problem demanding prompt solution.
It is clear that " obtaining the real change rule of level of ground water " depends primarily on the effective of level of ground water method of testing
Property and accuracy.At present, in Soft Ground Improved By Vacuum Preloading processing technology field, level of ground water method of testing mainly has: 1. normal water level
Tube method, the 2. method disclosed in Chinese patent cn 2777511y, 3. Hohai University's improved method (Geotechnical Engineering journal -2009,
Vol.31:48-51).The test value that respective deficiency is respectively as follows: 1. method is not the actual value of level of ground water under vacuum state,
And 2. method has explicitly pointed out its limitation；2. method can calculate the subsoil water place value under vacuum state indirectly, but test device is multiple
Miscellaneous, calculation procedure is loaded down with trivial details, the many factors of impact result of calculation accuracy, also shortage intuitive.3. method test device complexity, peace
Fill complex steps it is difficult to ensure that the vacuum of " between inner tube and outer tube " is consistent with the vacuum of " under diaphragm seal ", its test value
Nor represent the actual value of level of ground water under vacuum state completely.For 2. method and 3. method, although 1. method presence office
Sex-limited, but due to having the advantages that simple possible, still it is widely used in engineering at present actual.
Content of the invention
The purpose of the present invention is to overcome the shortcomings of above-mentioned existing method of testing, provides that a kind of device is simple, installation method is simple
Easily, method of testing is easy, test result is accurate, testing cost is low, be applied to the Novel underground of Soft Ground Improved By Vacuum Preloading treatment technology
Test device for water level and its using method.
For achieving the above object, the present invention adopts following technical proposals: one kind is applied to Soft Ground Improved By Vacuum Preloading treatment technology
Level of ground water test device it is characterised in that include: water level pipe, sheet emitting, light transmission piece and laser range finder,
By the supervisor occuping top and the chimney filter occuping bottom is coaxially connected forms for described water level pipe, the outer wall cladding of chimney filter
There is a draining board filter membrane, chimney filter bottom lock,
Described sheet emitting flies at the water surface in described water level pipe,
Described light transmission piece covers and is fixed on the pipe top of described water level pipe, and described laser range finder is located in described light transmission piece
Fang Jinhang tests.
Present invention also offers a kind of level of ground water test system, it includes water level pipe, sheet emitting, light transmission piece and Laser Measuring
Distance meter, vacuum sealing film, lubrication and seal material,
By the supervisor occuping top and the chimney filter occuping bottom is coaxially connected forms for described water level pipe, the outer wall cladding of chimney filter
There are draining board filter membrane, chimney filter bottom lock, water level pipe is vertically inserted in the soil body to be measured, supervisor is exposed to soil body surface,
Described sheet emitting flies at the water surface in described water level pipe,
Described light transmission piece covers and is fixed on the pipe top of described water level pipe, and described laser range finder is located in described light transmission piece
Fang Jinhang tests,
Described vacuum sealing film extends to from soil body surface and is exposed to supervisor's outer wall of soil body surface and seals fixation,
Described lubrication and seal material is filled between vacuum sealing film and the supervisor's outer wall being exposed to soil body surface.
For further, water level pipe chimney filter and water level pipe are responsible for the absolute altitude of junction with being not less than before vacuum pre-press reinforcing
Level of ground water absolute altitude in base.
Described supervisor and described chimney filter are tightly connected.
Present invention also offers a kind of level of ground water method of testing of Soft Ground Improved By Vacuum Preloading treatment technology, which employs as above
Described level of ground water test device, and adopt following operating procedure:
(1) water level pipe is inserted perpendicularly in foundation soil body to be measured to projected depth, wherein chimney filter and the mark being responsible for junction
Height should be not less than the level of ground water absolute altitude in ground before vacuum pre-press reinforcing；
(2) it is rinsed toward injected clear water in water level pipe no longer muddy to Guan Zhongshui, sheet emitting is put in pipe so as to floating
In the water surface；
(3) light transmission piece level is fixed at supervisor pipe top, and guarantees planarization；
(4) vacuum sealing film is coated on the soil body table being responsible for around the portions outer wall exposing soil body surface and supervisor
Face；
(5) filling lubrication and seal material between the portions outer wall of soil body surface is exposed in vacuum sealing film and supervisor；
(6) before evacuation, stable data is gathered by laser range finder, as level of ground water initial reading；
(7), during vacuum preloading, it is tracked testing by laser range finder, obtains real time readouts.
Lubrication and seal material in described step 5 is the colloid that butter etc. has good sealing property and lubricity.
In described step 5, fixed by vacuum sealing membrane material colligation between vacuum sealing film and supervisor.
Specifically, described use laser range finder gathered data is carried out successively in the steps below:
1. laser range finder transmitting terminal is close to be fixed on the light transmission piece at water level pipe supervisor pipe top；
2. laser range finder transmitting terminal is directed at the sheet emitting on bubbling through the water column in water level pipe pipe；
3. laser range finder continuous emission excimer laser bundle, automatically obtain simultaneously and record in water level pipe pipe the water surface to the mouth of pipe away from
From；
4. every time test when, repeat 1.～3..
The present invention is tested based on laser distance measuring principle, method of testing is easy, testing cost is low, test result is directly perceived and
True and reliable, therefore, can accurately obtain the Variation Regular of Groundwater Levels in ground.Particular, it is important that the ground of the present invention
Lower test device for water level can guarantee that the vacuum inside and outside water level pipe is consistent with the vacuum under diaphragm seal, and its test value can be truly
The actual value of level of ground water under reflection vacuum state.
Brief description
Fig. 1 is level of ground water test device schematic diagram of the present invention.
In figure: 1- is responsible for；2- chimney filter；3- sheet emitting；4- light transmission piece；5- laser range finder；6- vacuum sealing film；7- butter
Deng lubrication and seal material；8- horizontal drainage sand bedding course；9- is reinforced soft soil foundation；Ground in ground before 10- vacuum pre-press reinforcing
Lower water level.
Specific embodiment:
Below it is only the enforcement example of the present invention it is impossible to the scope of the present invention is limited with this.I.e. in every case according to the present patent application
Unsubstantiality change and modification that the scope of the claims is made, all should still remain within the scope of the patent.
As shown in figure 1, this level of ground water test device includes water level pipe (being assembled by supervisor 1 and chimney filter 2), sheet emitting
3rd, light transmission piece 4, laser range finder 5.
Referring to Figure of description 1, underground test device for water level and its using method are illustrated.
(1) first with the drilling equipment meeting technical requirements, water level pipe (being assembled by supervisor 1 and chimney filter 2) is installed to
Projected depth, and guarantee the perpendicularity of water level pipe, be located at the sealing of chimney filter 2 bottom and each connection between pipe sections at projected depth
Property, supervisor 1 pipe top section planarization；
Water level pipe chimney filter 2 can ensure that water level in pipe during vacuum pre-press reinforcing in time with its periphery soil body in water level guarantor
Hold dynamic equilibrium.It should be noted that chimney filter 2 outer wall needs outsourcing draining board filter membrane, bottom end closure, thin with the soil body that avoids surrounding
Granule enters the serious silting phenomenon of appearance in pipe and affects the permeable effect of freedom of chimney filter 2.In addition, water level pipe chimney filter 2 and water level
The absolute altitude that 1 junction is responsible for by pipe should be not less than the level of ground water absolute altitude 10 in ground before vacuum pre-press reinforcing.
(2) after a period of stabilisation, it is rinsed toward injected clear water in pipe, the water in pipe is no longer muddy；To launch
Piece 3 is put in pipe so as to fly at the water surface；
(3) light transmission piece 4 level is fixed at supervisor 1 pipe top, and guarantees planarization；
(4) vacuum sealing film 6 is coated on the portions outer wall and about that water level pipe supervisor 1 exposes sand bedding course 8 surface
Sand bedding course 8 surface.
(5) vacuum sealing film 6 and water level pipe are responsible for and are filled with Huang between the 1 portions outer wall exposing sand bedding course 8 surface
The oily or other colloid with good sealing property and lubricity is as lubrication and seal material 7, and it is close to pass through vacuum between the two
Sealer 6 material colligation is fixed, and to avoid water level pipe, with surrounding soil, inconsistent sedimentation occurs, causes vacuum sealing film 6 drawing crack, leakage
Gas, and then weaken sand bedding course 8 and the vacuum transmission effect being reinforced in soft soil foundation 9.
(6), before evacuation, the stable reading in water level pipe supervisor 1 is gathered by laser range finder, as at the beginning of level of ground water
Reading；
Wherein, the gathered data process of laser range finder is carried out successively in the steps below:
1. laser range finder transmitting terminal is close to be fixed on the light transmission piece at water level pipe supervisor pipe top；
2. laser range finder transmitting terminal is directed at the sheet emitting on bubbling through the water column in water level pipe pipe；
3. laser range finder continuous emission excimer laser bundle, automatically obtain simultaneously and record in water level pipe pipe the water surface to the mouth of pipe away from
From；
4. every time test when, repeat 1.～3..
(7), during vacuum preloading, it is tracked testing by laser range finder, as real time readouts.
The test philosophy of the present invention is: light is propagated in pipe with speed c, needed for round trip between the mouth of pipe and sheet emitting
Time be t, then between the two apart from d be: d=ct/2.
During vacuum pre-press reinforcing foundation, the water level in water level pipe pipe can change, and therefore swims in the water surface in pipe
On sheet emitting 3 also can move, cause the water surface in water level pipe pipe to the distance of the mouth of pipe to change, thus changing laser
The reading of diastimeter, the change according to reading can accurately measure the change of level of ground water.
Claims (4)
1. a kind of level of ground water method of testing of Soft Ground Improved By Vacuum Preloading treatment technology is applied to very it is characterised in that employing one kind
The level of ground water test system of empty precompressed foundation treatment technology, the described level of ground water being applied to Soft Ground Improved By Vacuum Preloading treatment technology
Test system, comprising: water level pipe, sheet emitting, light transmission piece and laser range finder, vacuum sealing film, lubrication and seal material,
By the supervisor occuping top and the chimney filter occuping bottom is coaxially connected forms for described water level pipe, and the outer wall of chimney filter is coated with row
Water plate filter membrane, chimney filter bottom lock, water level pipe is vertically inserted in the soil body to be measured, and supervisor is exposed to soil body surface, chimney filter with
The absolute altitude of supervisor junction is not less than the level of ground water absolute altitude in ground before vacuum pre-press reinforcing,
Described sheet emitting flies at the water surface in described water level pipe,
Described light transmission piece covers and is fixed on the pipe top of described water level pipe, and described laser range finder is located at and enters above described light transmission piece
Row test,
Described vacuum sealing film extends to from soil body surface and is exposed to supervisor's outer wall of soil body surface and seals fixation,
Described lubrication and seal material is filled between vacuum sealing film and the supervisor's outer wall being exposed to soil body surface；
The level of ground water method of testing of described Soft Ground Improved By Vacuum Preloading treatment technology includes following operating procedure:
(1) water level pipe is inserted perpendicularly into projected depth in foundation soil body to be measured, wherein chimney filter should with the absolute altitude of supervisor junction
It is not less than the level of ground water absolute altitude in ground before vacuum pre-press reinforcing；
(2) it is rinsed toward injected clear water in water level pipe no longer muddy to Guan Zhongshui, sheet emitting is put in pipe so as to float on water
Face；
(3) light transmission piece is covered and be fixed at supervisor pipe top, and guarantee level and planarization；
(4) vacuum sealing film is coated on the soil body surface being responsible for around the portions outer wall exposing soil body surface and supervisor；
(5) filling lubrication and seal material between the portions outer wall of soil body surface is exposed in vacuum sealing film and supervisor；
(6) before evacuation, stable data is gathered by laser range finder, as level of ground water initial reading；
(7), during vacuum preloading, it is tracked testing by laser range finder, obtains real time readouts.
2. method according to claim 1 it is characterised in that: the lubrication and seal material in described step 5 be butter.
3. method according to claim 1 it is characterised in that: in described step 5, vacuum sealing film and supervisor between pass through
Vacuum sealing membrane material colligation is fixed.
4. method according to claim 1 it is characterised in that: described use laser range finder gathered data successively press following
Step is carried out:
1. laser range finder transmitting terminal is close to be fixed on the light transmission piece at water level pipe supervisor pipe top；
2. laser range finder transmitting terminal is directed at the sheet emitting on bubbling through the water column in water level pipe pipe；
3. laser range finder continuous emission excimer laser bundle, obtains simultaneously and records the water surface in water level pipe pipe automatically to the distance of the mouth of pipe；
4. every time test when, repeat 1.～3..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310478672.9A CN103592002B (en) | 2013-10-14 | 2013-10-14 | Groundwater level testing device applicable to vacuum preloading foundation treatment technology and using method of groundwater level testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310478672.9A CN103592002B (en) | 2013-10-14 | 2013-10-14 | Groundwater level testing device applicable to vacuum preloading foundation treatment technology and using method of groundwater level testing device |
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| CN103592002A CN103592002A (en) | 2014-02-19 |
| CN103592002B true CN103592002B (en) | 2017-02-01 |
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| CN201310478672.9A Expired - Fee Related CN103592002B (en) | 2013-10-14 | 2013-10-14 | Groundwater level testing device applicable to vacuum preloading foundation treatment technology and using method of groundwater level testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104316144B (en) * | 2014-11-04 | 2017-06-09 | 河海大学 | A kind of visualization measurement method of level of ground water under condition of negative pressure |
| CN105424139B (en) * | 2015-11-05 | 2018-08-28 | 河海大学 | Level of ground water plugging meter devices and methods therefor based on ultrasonic wave negative pressure |
| CN109374091B (en) * | 2018-10-31 | 2020-07-24 | 重庆交通大学 | Underground water level measuring device and measuring method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203629640U (en) * | 2013-10-14 | 2014-06-04 | 中交四航工程研究院有限公司 | Underground water level test device and system applicable to vacuum preloading foundation treatment technology |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| IL56088A (en) * | 1978-11-30 | 1982-05-31 | Technion Res & Dev Foundation | Method of extracting liquid and gaseous fuel from oil shale and tar sand |
| CN2777511Y (en) * | 2005-04-08 | 2006-05-03 | 广州四航工程技术研究院 | Tester for underground water level in vacuum prepressing reinforced area |
| CN100359297C (en) * | 2006-06-09 | 2008-01-02 | 河海大学 | Device and method for testing water level in vacuum prepressing foundation reinforced area |
| CN101074889A (en) * | 2007-06-14 | 2007-11-21 | 南京航空航天大学 | Float laser liquid-level measuring device |
| CN201574168U (en) * | 2009-12-08 | 2010-09-08 | 攀枝花新钢钒股份有限公司 | Vacuum treatment jacking system |
| CN202453039U (en) * | 2011-10-14 | 2012-09-26 | 上海工电能源科技有限公司 | Laser liquid-level measuring device |
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| CN203629640U (en) * | 2013-10-14 | 2014-06-04 | 中交四航工程研究院有限公司 | Underground water level test device and system applicable to vacuum preloading foundation treatment technology |
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Effective date of registration: 20170921 Address after: 510000 headquarters building, Guangzhou, Haizhuqu District, Guangdong Zhenxing street, No. 18, Patentee after: CCCC Fourth Harbor Engineering Co.,Ltd. Address before: 510230 Guangzhou Qianjin Road, Guangdong, No. 157 Co-patentee before: CCCC FOURTH HARBOR GEOTECHNICAL ENGINEERING Co.,Ltd. Patentee before: CCCC FOURTH HARBOR ENGINEERING INSTITUTE Co.,Ltd. Co-patentee before: GUANGZHOU HARBOR ENGINEERING QUALITY EXAMINATION Co.,Ltd. Co-patentee before: GUANGZHOU SIHANG MATERIAL TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20170201 Termination date: 20211014 |