CN108978696A - A kind of bottom sealing antiseepage and displacement monitor - Google Patents
A kind of bottom sealing antiseepage and displacement monitor Download PDFInfo
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- CN108978696A CN108978696A CN201810728518.5A CN201810728518A CN108978696A CN 108978696 A CN108978696 A CN 108978696A CN 201810728518 A CN201810728518 A CN 201810728518A CN 108978696 A CN108978696 A CN 108978696A
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- pressure sensor
- displacement
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 63
- 238000007789 sealing Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 238000009826 distribution Methods 0.000 claims abstract description 50
- 239000013307 optical fiber Substances 0.000 claims description 32
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of bottom sealing antiseepage and displacement monitors, including water proof thin plate, displacement monitor；The displacement monitor includes sequentially connected first bar, first pressure sensor, distribution type fiber-optic, second pressure sensor and the second bar, the water proof thin plate is horizontal positioned, the distribution type fiber-optic is placed horizontally in water proof thin plate upper surface, first bar and the second bar are placed vertically, and the distribution type fiber-optic can monitor the strain of water proof thin plate upper surface.It the beneficial effects of the invention are as follows the problem of artesian water causes bottom sealing to leak is slowed down, in addition can monitor whether bottom sealing has leakage, while monitor in bottom sealing the displacement of water proof thin plate and stress to artesian pressure excessive below early warning bottom sealing.
Description
Technical field
The invention belongs to geotechnical study fields, more particularly to a kind of bottom sealing antiseepage and displacement monitor.
Background technique
Well foundation is a kind of form of underground structure, its main feature is that first in the open caisson of earth's surface production pit shaft shape, then
Persistently cutting the earth in well makes open caisson gradually sink down into specified absolute altitude under Gravitative Loads, then back cover.Back cover can prevent underground
Water flows into open caisson.When the area of rich groundwater uses well foundation, for the influence of the artesian water under evenly, usually
Back cover is carried out using tremie method casting concrete, if but artesian pressure is excessive to will cause back cover difficulty, artesian pressure mistake
It will lead to back cover strain cracking greatly.
Summary of the invention
The present invention causes bottom sealing to leak the problem of cracking to slow down artesian water, and in order to detect bottom sealing
To the excessive artesian pressure of early warning, the present invention provides a kind of bottom sealing antiseepages and displacement monitoring to fill for displacement and stress
It sets.
Technical solution of the present invention: a kind of bottom sealing antiseepage and displacement monitor, including water proof thin plate, displacement monitoring
Device；The displacement monitor includes data acquisition and analysis system, optical fibre interrogation instrument and sequentially connected first bar, first
Pressure sensor, distribution type fiber-optic, second pressure sensor and the second bar, the data acquisition and analysis system, optical fibre interrogation instrument
Be sequentially connected with distribution type fiber-optic, the data acquisition and analysis system respectively with first pressure sensor and second pressure sensor
Connection, the water proof thin plate are horizontal positioned, and the distribution type fiber-optic is placed horizontally in water proof thin plate upper surface, first bar and the
Two bars are placed vertically.The distribution type fiber-optic can monitor the strain of water proof thin plate upper surface.
Preferably, the water proof thin plate is circle, and the optical fiber passes through the center of circle of water proof thin plate, and optical fiber midpoint and water proof
The thin plate center of circle is overlapped.
Preferably, the first pressure sensor and first pressure sensor are made of piezoelectric ceramics.
Preferably, the bottom sealing antiseepage and displacement monitor are furnished with DC power supply and galvanometer, in water proof thin plate
The positive access point and cathode access point of edge setting measurement resistance, the anode connection of positive access point and DC power supply, direct current
Cathode, galvanometer and the cathode access point of power supply are sequentially connected, the electric current I measured by the voltage U and galvanometer of DC power supply
Resistance R is calculated, is hadWhether have leakage, such as resistance R unexpected if bottom sealing is judged by the variation of monitoring resistor R
Reduction shows there is leakage.
A kind of bottom sealing antiseepage and the antiseepage of displacement monitor and displacement monitoring method, include the following steps:
Step 1: the cross section of open caisson is circle, and water proof thin plate is circle；There is back cover reinforcing layer in open caisson lower end, and back cover is reinforced
Layer can be that concreting forms or be that cement and soil stir, and back cover reinforcing layer, which has, resists open caisson bottom water pressure
It is acted on antiseepage, level lays water proof thin plate in back cover reinforcing layer, and the antiseepage energy of bottom sealing can be enhanced in water proof thin plate
Power, first pressure sensor and second pressure sensor are located at the top at distribution type fiber-optic both ends, one end of the first bar with
First pressure sensor connection and the other end is connect with open caisson bottom, one end of the second bar is connect and another with second pressure sensor
One end is connect with open caisson bottom, and water proof thin plate can prevent underground bearing water from infiltrating along back cover reinforcing layer crack；
Step 2: displacement monitoring: measuring the decrement of the first bar and the second bar first, if the first pole length is L1If second
Pole length is L2If the first bar Young's modulus is E1If the second bar Young's modulus is E2If what first pressure sensor measured answers
Power is σ1If the stress that second pressure sensor measures is σ2If the decrement of the first bar is Δ s1If the decrement of the second bar
For Δ s2, then the decrement of the first bar isThe decrement of second bar isThen measurement is distributed
Relative vertical displacement w of the optical fiber midpoint with respect to first pressure sensor1, measurement distribution type fiber-optic midpoint is sensed with respect to second pressure
The relative vertical displacement w of device2, then distribution type fiber-optic midpoint is w with respect to the average relative vertical displacement at itself both endso=(w1+
w2)/2, the absolute vertical displacement for finally calculating water proof thin plate center is w=wo+(Δs1+Δs2)/2；
Step 3: whether the stress for examining water proof thin plate is more than water proof thin plate intensity: set the radius of round water proof thin plate as R,
If the plate thickness of round water proof thin plate is h, if the Young's modulus of round water proof thin plate is E, if the Poisson's ratio of round water proof thin plate is
V, taking the displacement of round water proof thin plate the center point is to measure putting down for obtained distribution type fiber-optic midpoint Relative distribution formula optical fiber both ends
Equal relative displacement wo, set the maximum stress in water proof thin plate then as σmaxAnd calculation formula isIf every
The intensity of water thin plate is [σ], works as σmaxShow that the stress in water proof thin plate has been more than self-strength when >=[σ], i.e. underground bearing water
Cause back cover reinforcing layer and water proof thin plate to deform excessive and water proof thin plate destroyed, can be in this way artesian water to bottom sealing pressure
The excessive offer early warning of power；
Step 4: examine bottom sealing whether have leakage: water proof sheet edges setting resistance measurement positive access point and
The anode connection of cathode access point, positive access point and DC power supply, cathode, galvanometer and the cathode access point of DC power supply according to
Secondary connection calculates resistance R by the electric current I that the voltage U and galvanometer of DC power supply are measured, hasPass through monitoring resistor R
Variation judge whether bottom sealing has a leakage, such as resistance R reduces show to have leakage suddenly.
Preferably, relative vertical displacement w is measured in the step 21Mode are as follows: first by distribution type fiber-optic midpoint to
Optical fiber endpoint where one pressure sensor is equally divided into n sections, and the length of each segmentation is Δ l in distribution type fiber-optic, works as circle
When the radius of water proof thin plate is R, there is Δ l=R/n, the optical fiber endpoint where remembering first pressure sensor is node 1, cloth of scoring
The corresponding node in optical fiber midpoint is n+1, is successively denoted as 1,2,3, Λ, n, n+1 from node 1 toward the node that node is the direction n+1, if
The strain that distribution type fiber-optic the i-th node measurement obtains is εi, then distribution type fiber-optic midpoint is with respect to where first pressure sensor
The relative vertical displacement w of optical fiber endpoint1Calculation formula beDistribution type fiber-optic midpoint is passed with respect to second pressure
The relative vertical displacement w of optical fiber endpoint where sensor2Calculating process and w1Calculating process it is identical.
The beneficial effects of the invention are as follows the problem of artesian water causes bottom sealing to leak is slowed down, open caisson envelope in addition can be monitored
Whether bottom has leakage, while monitoring in bottom sealing the displacement of water proof thin plate and stress to the pressure-bearing below early warning bottom sealing
Water pressure is excessive.
Detailed description of the invention
Fig. 1 is the schematic diagram of water proof thin plate of the invention, back cover reinforcing layer and open caisson；
Fig. 2 is water proof thin plate schematic longitudinal section of the invention；
Fig. 3 is water proof thin plate top view of the invention.
Fig. 4 is data acquisition and analysis system and distribution type fiber-optic and pressure sensor connection schematic diagram of the invention.
1. foundation soil in figure, 2. open caissons, 3. water proof thin plates, 4. back cover reinforcing layers, 5. distribution type fiber-optics, 6. first bars,
7. the second bar, 8. first pressure sensors, 9. second pressure sensors, 10. DC power supplies, 11. galvanometer, 12. anode accesses
Point, 13. cathode access points, 14. optical fibre interrogation instrument, 15. data acquisition and analysis systems.
Specific embodiment
In order to realize the present invention technological means, character of innovation, reach purpose and effect is easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Such as bottom sealing antiseepage a kind of in Fig. 1-Fig. 3 and displacement monitor, including water proof thin plate 3, displacement monitor；
The displacement monitor includes data acquisition and analysis system 15, optical fibre interrogation instrument 14 and sequentially connected first bar 6, first
Pressure sensor 8, distribution type fiber-optic 5, second pressure sensor 9 and the second bar 7, the data acquisition and analysis system 15, optical fiber
(FBG) demodulator 14 and distribution type fiber-optic 5 are sequentially connected, the data acquisition and analysis system 15 respectively with first pressure sensor 8 and
The connection of two pressure sensors 9, the water proof thin plate 3 is horizontal positioned, and the distribution type fiber-optic 5 is placed horizontally in table on water proof thin plate 3
Face, first bar 6 and the second bar 7 are placed vertically；The distribution type fiber-optic 5 can monitor the strain of 3 upper surface of water proof thin plate；
The water proof thin plate 3 is circle, and the distribution type fiber-optic 5 passes through the center of circle of water proof thin plate 3, and distribution type fiber-optic 5
Midpoint and 3 center of circle of water proof thin plate are overlapped；
The bottom sealing antiseepage and displacement monitor are furnished with DC power supply 10 and galvanometer 11, on 3 side of water proof thin plate
The anode of the positive access point 12 and cathode access point 13 of edge setting measurement resistance, positive access point 12 and DC power supply 10 is even
It connects, cathode, galvanometer 11 and the cathode access point 13 of DC power supply 10 are sequentially connected, and pass through the voltage U and electricity of DC power supply 10
The electric current I that flowmeter measures calculates resistance R, hasJudge whether bottom sealing has leakage by the variation of monitoring resistor R,
Such as resistance R reduces show to have leakage suddenly.
A kind of bottom sealing antiseepage and the antiseepage of displacement monitor and displacement monitoring method, include the following steps:
Step 1: having open caisson 2 in foundation soil 1, the cross section of open caisson 2 is circle, and water proof thin plate 3 is circle；Under open caisson 2
There is a back cover reinforcing layer 4 at end, and back cover is reinforced, and 4 can be that concreting forms or be that cement and soil stir, back cover reinforcing
Layer 4, which has, resists 2 bottom water pressure of open caisson and antiseepage effect, and level lays water proof thin plate 3, water proof in back cover reinforcing layer 4
Thin plate 3 enhances the seepage capability of 2 back cover of open caisson, and first pressure sensor 8 and second pressure sensor 9 are located at distribution
The one end on the top at 5 both ends of optical fiber, the first bar 6 is connect with first pressure sensor 8 and the other end is connect with 2 bottom of open caisson, the
One end of two bars 6 is connect with second pressure sensor 9 and the other end is connect with 2 bottom of open caisson, and water proof thin plate 3 can prevent underground
Artesian water is infiltrated along 4 crack of back cover reinforcing layer；
Step 2: displacement monitoring: measuring the decrement of the first bar 6 and the second bar 7 first, if 6 length of the first bar is L1If
Second bar, 7 length is L2If 6 Young's modulus of the first bar is E1If 7 Young's modulus of the second bar is E2If first pressure sensor 8
The stress measured is σ1If the stress that second pressure sensor 9 measures is σ2If the decrement of the first bar 6 is Δ s1If second
The decrement of bar 7 is Δ s2, then the decrement of the first bar 6 isThe decrement of second bar 7 isSo
Relative vertical displacement w of measurement 5 midpoint of distribution type fiber-optic with respect to first pressure sensor 8 afterwards1, measure 5 midpoint of distribution type fiber-optic
The relative vertical displacement w of opposite second pressure sensor 92, then 5 midpoint of distribution type fiber-optic is average relatively perpendicular with respect to itself both ends
It is w to displacemento=(w1+w2)/2, the absolute vertical displacement for finally calculating 3 center of water proof thin plate is w=wo+(Δs1+Δs2)/2；
Step 3: whether the stress for examining water proof thin plate 3 is more than 3 intensity of water proof thin plate: setting the radius of round water proof thin plate 3
For R, if the plate thickness of round water proof thin plate 3 is h, if the Young's modulus of round water proof thin plate 3 is E, if the pool of round water proof thin plate 3
For pine than being v, taking the displacement of round 3 the center point of water proof thin plate is to measure obtained 5 midpoint Relative distribution formula optical fiber 5 of distribution type fiber-optic
The average relative vertical displacement w at both endso, set the maximum stress in water proof thin plate 3 then as σmaxAnd calculation formula isIf the intensity of water proof thin plate 3 is [σ], work as σmaxShow that the stress in water proof thin plate 3 is more than when >=[σ]
Self-strength, i.e. underground bearing water cause back cover reinforcing layer 4 and water proof thin plate 3 to deform excessive and 3 destroyed of water proof thin plate, this
Sample can provide early warning for artesian water is excessive to 2 back cover pressure of open caisson；
Step 4: examining whether 2 back cover of open caisson has leakage: in the positive access point of 3 edge of water proof thin plate setting resistance measurement
12 and cathode access point 13, the anode connection of positive access point 12 and DC power supply 10, cathode, the galvanometer 11 of DC power supply 10
It is sequentially connected with cathode access point 13, resistance R is calculated by the electric current I that the voltage U and galvanometer 11 of DC power supply 10 are measured, is hadWhether have leakage, such as resistance R reduces show there is infiltration suddenly if 2 back cover of open caisson is judged by the variation of monitoring resistor R
Leakage occurs.
Relative vertical displacement w is measured in the step 21Mode are as follows: first by 5 midpoint of distribution type fiber-optic to first pressure
5 endpoint of optical fiber where sensor 8 is equally divided into n sections, and the length of each segmentation is Δ l in distribution type fiber-optic 5, when round water proof
When the radius of thin plate 3 is R, there is Δ l=R/n, 5 endpoint of optical fiber where note first pressure sensor 8 is node 1, cloth of scoring
The corresponding node in 5 midpoint of optical fiber is n+1, is successively denoted as 1,2,3, Λ, n, n+1 from node 1 toward the node that node is the direction n+1,
If the strain that 5 i-th node measurement of distribution type fiber-optic obtains is εi, then 5 midpoint of distribution type fiber-optic is with respect to 8 institute of first pressure sensor
5 endpoint of optical fiber relative vertical displacement w1Calculation formula be5 midpoint of distribution type fiber-optic is with respect to second
The relative vertical displacement w of 9 place optical fiber of pressure sensor, 5 endpoint2Calculating process and w1Calculating process it is identical.
Claims (6)
1. a kind of bottom sealing antiseepage and displacement monitor, it is characterised in that: it includes water proof thin plate, displacement monitor；
The displacement monitor includes data acquisition and analysis system, optical fibre interrogation instrument and sequentially connected first bar, first pressure
Sensor, distribution type fiber-optic, second pressure sensor and the second bar, the data acquisition and analysis system, optical fibre interrogation instrument and point
Cloth optical fiber is sequentially connected, and the data acquisition and analysis system connects with first pressure sensor and second pressure sensor respectively
It connects, the water proof thin plate is horizontal positioned, and the distribution type fiber-optic is placed horizontally in water proof thin plate upper surface, first bar and second
Bar is placed vertically.
2. a kind of bottom sealing antiseepage according to claim 1 and displacement monitor, it is characterised in that: the water proof is thin
Plate is circle, and the optical fiber passes through the center of circle of water proof thin plate, and optical fiber midpoint and the water proof thin plate center of circle are overlapped.
3. a kind of bottom sealing antiseepage according to claim 1 and displacement monitor, it is characterised in that: first pressure
Force snesor and first pressure sensor are made of piezoelectric ceramics.
4. a kind of bottom sealing antiseepage according to claim 1 and displacement monitor, it is characterised in that: the open caisson envelope
Bottom antiseepage and displacement monitor are furnished with DC power supply and galvanometer, and the anode access of measurement resistance is arranged in water proof sheet edges
The anode connection of point and cathode access point, positive access point and DC power supply, cathode, galvanometer and the cathode access of DC power supply
Point is sequentially connected.
5. a kind of bottom sealing antiseepage and the antiseepage of displacement monitor described in -4 and displacement monitoring side according to claim 1
Method, it is characterised in that: it includes the following steps:
Step 1: the cross section of open caisson is circle, and water proof thin plate is circle；There is back cover reinforcing layer in open caisson lower end, and back cover reinforcing layer can
Think that concreting is formed or stirred for cement and soil, level lays water proof thin plate in back cover reinforcing layer, the
One pressure sensor and second pressure sensor are located at the top at distribution type fiber-optic both ends, one end of the first bar and the first pressure
Force snesor connection and the other end is connect with open caisson bottom, one end of the second bar connect with second pressure sensor and the other end and
The connection of open caisson bottom；
Step 2: displacement monitoring: measuring the decrement of the first bar and the second bar first, if the first pole length is L1If the second bar is long
Degree is L2If the first bar Young's modulus is E1If the second bar Young's modulus is E2If the stress that first pressure sensor measures is
σ1If the stress that second pressure sensor measures is σ2If the decrement of the first bar is Δ s1If the decrement of the second bar is Δ
s2, then the decrement of the first bar isThe decrement of second bar isThen distribution type fiber-optic is measured
Relative vertical displacement w of the midpoint with respect to first pressure sensor1, distribution type fiber-optic midpoint is measured with respect to second pressure sensor
Relative vertical displacement w2, then distribution type fiber-optic midpoint is w with respect to the average relative vertical displacement at itself both endso=(w1+w2)/2,
The absolute vertical displacement for finally calculating water proof thin plate center is w=wo+(Δs1+Δs2)/2；
Step 3: whether the stress for examining water proof thin plate is more than water proof thin plate intensity: the radius of round water proof thin plate is set as R, if circle
The plate thickness of shape water proof thin plate is h, if the Young's modulus of round water proof thin plate is E, if the Poisson's ratio of round water proof thin plate is v, is taken
The displacement of round water proof thin plate the center point is the average phase at the distribution type fiber-optic midpoint Relative distribution formula optical fiber both ends that measurement obtains
To displacement wo, set the maximum stress in water proof thin plate then as σmaxAnd calculation formula isIf water proof is thin
The intensity of plate is [σ], works as σmaxShow that the stress in water proof thin plate has been more than self-strength when >=[σ], i.e. underground bearing water causes
Back cover reinforcing layer and water proof thin plate deform excessive and water proof thin plate destroyed, can be in this way artesian water to bottom sealing pressure mistake
It is big that early warning is provided；
Step 4: examining whether bottom sealing has leakage: in the positive access point and cathode of the setting resistance measurement of water proof sheet edges
The anode connection of access point, positive access point and DC power supply, cathode, galvanometer and the cathode access point of DC power supply successively connect
It connects, resistance R is calculated by the electric current I that the voltage U and galvanometer of DC power supply are measured, is hadPass through the change of monitoring resistor R
Change to judge whether bottom sealing has a leakage, such as resistance R reduces show to have leakage suddenly.
6. a kind of bottom sealing antiseepage according to claim 5 and the antiseepage of displacement monitor and displacement monitoring method,
It is characterized by: measuring relative vertical displacement w in the step 21Mode are as follows: first by distribution type fiber-optic midpoint to first pressure
Optical fiber endpoint where force snesor is equally divided into n sections, and the length of each segmentation is Δ l in distribution type fiber-optic, when round water proof
When the radius of thin plate is R, there is Δ l=R/n, the optical fiber endpoint where remembering first pressure sensor is node 1, remembers distribution type fiber-optic
The corresponding node in midpoint is n+1,1,2,3, Λ, n, n+1 is successively denoted as from node 1 toward the node that node is the direction n+1, if distribution
The strain that the i-th node measurement of formula optical fiber obtains is εi, then distribution type fiber-optic midpoint is with respect to the optical fiber where first pressure sensor
The relative vertical displacement w of endpoint1Calculation formula beDistribution type fiber-optic midpoint is with respect to second pressure sensor
The relative vertical displacement w of place optical fiber endpoint2Calculating process and w1Calculating process it is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728518.5A CN108978696B (en) | 2018-07-05 | 2018-07-05 | Open caisson back cover prevention of seepage and displacement monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728518.5A CN108978696B (en) | 2018-07-05 | 2018-07-05 | Open caisson back cover prevention of seepage and displacement monitoring devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108978696A true CN108978696A (en) | 2018-12-11 |
| CN108978696B CN108978696B (en) | 2020-07-28 |
Family
ID=64536966
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810728518.5A Active CN108978696B (en) | 2018-07-05 | 2018-07-05 | Open caisson back cover prevention of seepage and displacement monitoring devices |
Country Status (1)
| Country | Link |
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| CN (1) | CN108978696B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139942A (en) * | 2020-01-14 | 2020-05-12 | 长沙同强电子科技有限公司 | Dehumidification system and dehumidification method thereof |
| CN115094958A (en) * | 2022-06-02 | 2022-09-23 | 北京建工集团有限责任公司 | Layered water pumping detection method for ultra-deep large-diameter high-pressure jet grouting bottom sealing effect |
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| JPH06264452A (en) * | 1993-03-12 | 1994-09-20 | Komatsu Ltd | Detector for position of excavator in open caisson method |
| CN201459747U (en) * | 2009-07-28 | 2010-05-12 | 武汉京冶地基基础工程有限责任公司 | Alarmable open caisson in construction |
| CN103175508A (en) * | 2011-12-23 | 2013-06-26 | 同方威视技术股份有限公司 | Monitoring for settlement of railroad bed |
| CN103592428A (en) * | 2013-11-07 | 2014-02-19 | 长安大学 | Device and method for detecting road surface compaction effect |
| CN207376637U (en) * | 2017-11-06 | 2018-05-18 | 重庆建工第四建设有限责任公司 | A kind of open caisson seepage-proof structure |
-
2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06264452A (en) * | 1993-03-12 | 1994-09-20 | Komatsu Ltd | Detector for position of excavator in open caisson method |
| CN201459747U (en) * | 2009-07-28 | 2010-05-12 | 武汉京冶地基基础工程有限责任公司 | Alarmable open caisson in construction |
| CN103175508A (en) * | 2011-12-23 | 2013-06-26 | 同方威视技术股份有限公司 | Monitoring for settlement of railroad bed |
| CN103592428A (en) * | 2013-11-07 | 2014-02-19 | 长安大学 | Device and method for detecting road surface compaction effect |
| CN207376637U (en) * | 2017-11-06 | 2018-05-18 | 重庆建工第四建设有限责任公司 | A kind of open caisson seepage-proof structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139942A (en) * | 2020-01-14 | 2020-05-12 | 长沙同强电子科技有限公司 | Dehumidification system and dehumidification method thereof |
| CN115094958A (en) * | 2022-06-02 | 2022-09-23 | 北京建工集团有限责任公司 | Layered water pumping detection method for ultra-deep large-diameter high-pressure jet grouting bottom sealing effect |
| CN115094958B (en) * | 2022-06-02 | 2023-05-16 | 北京建工集团有限责任公司 | Layered water pumping detection method for ultra-deep large-diameter high-pressure rotary spraying bottom sealing effect |
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| Publication number | Publication date |
|---|---|
| CN108978696B (en) | 2020-07-28 |
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