CN103882891B - The method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall - Google Patents
The method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall Download PDFInfo
- Publication number
- CN103882891B CN103882891B CN201410019859.7A CN201410019859A CN103882891B CN 103882891 B CN103882891 B CN 103882891B CN 201410019859 A CN201410019859 A CN 201410019859A CN 103882891 B CN103882891 B CN 103882891B
- Authority
- CN
- China
- Prior art keywords
- wall
- seam crossing
- breakthrough
- diaphram wall
- thermal field
- 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.)
- Expired - Fee Related
Links
Abstract
The present invention relates to a kind of method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall, in the process of excavation of foundation pit, utilize infrared thermal field to descend the mass defect place that diaphragm wall exists hidden leakage defect to carry out Non-Destructive Testing over the ground. Concrete steps include: (1) deep basal pit diaphram wall is patrolled. Find diaphram wall seam crossing. (2) dig a well at the outer seam crossing of foundation ditch and add artificial heat. (3) Site Detection is implemented. Utilize thermal infrared imager, the target in detection scheme is measured, form image, and record and keep relevant infra-red heat field picture. (4) the potential breakthrough of diaphram wall seam crossing judges. Analyze the infra-red heat field picture generated, abnormal thermal field is analyzed and judgement, and then carry out judging to breakthrough and position. This lossless detection method strong adaptability, not only can monitor foundation ditch situation daytime, and night still can monitor in real time when the vision of people is too late.
Description
Technical field
The present invention is applied to underground structrue engineering deep basal pit diaphram wall seam crossing leak detection field.
Background technology
In foundation pit construction particularly huge ultradeep foundation pit excavation construction, diaphram wall plays important safety guarantee effect. If diaphram wall seepage, foundation ditch side is kept away and is easy for caving in, and construction in foundation ditch is adversely affected, and construction can be threatened time serious even to directly contribute great deep pit monitor accident. Therefore monitoring of leakage is the important step of foundation ditch construction of diaphragm wall. Common practice is to arrange certain observation boring in foundation ditch diaphram wall both sides, level of ground water carries out comparative observation to determine whether that seepage occurs. The usual observation effect of this practice is inconspicuous, and observed result is more delayed, thus situation of falling into a passive position, causes that security of foundation ditch construction coefficient is high not. In the construction of base pit engineering, improve diaphram wall monitoring of leakage efficiency and precision particularly significant and urgent.
Summary of the invention
Imperfection for existing diaphram wall quality detection technology, the present invention provides a kind of method utilizing infrared thermal field quickly to detect side wall leakage of underground diaphragm wall, in Deep Excavation, thermal infrared imager is utilized to gather the infra-red heat information of diaphram wall body and seam crossing, thermal field image is generated according to infrared induction, analyze the infra-red heat field picture generated, abnormal thermal field is analyzed and judgement, and then carry out judging to breakthrough and position. This lossless detection method strong adaptability, not only can monitor foundation ditch situation daytime, and night still can monitor in real time when the vision of people is too late.
The technical scheme that the present invention provides is:
A kind of method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall, it is characterised in that specifically comprise the following steps that
(1) deep basal pit diaphram wall inspection.Inspection is the investigation carried out before formally carrying out detection, and main purpose is to find diaphram wall seam crossing, because owing to mud washes away unclean in ground wall work progress, causing that ground wall seam crossing exists percolating water risk. And pay close attention to surface of wall transverse crack and breakthrough. Further to define detection range and object, make detection more targeted.
(2) dig a well at the outer seam crossing of foundation ditch and add artificial heat. According to inspection result, detection range being carried out further clearly, dig a well and add artificial heat, improve the temperature of water outside ground wall seam crossing hole, constantly portion's potential seepage region infiltration within the walls to ground along with current, ground temperature within the walls also improves constantly. In foundation ditch the temperature of surface of wall also in rising in various degree.
(3) Site Detection is implemented. According to detection scheme, utilize thermal infrared imager, the target in detection scheme is measured, form image, and record and keep relevant infra-red heat field picture.
(4) the potential breakthrough of diaphram wall seam crossing judges. Analyze the infra-red heat field picture generated, abnormal thermal field is analyzed and judgement, and then carry out judging to breakthrough and position.
In the present invention, the seam described in step (1) is conventional deep basal pit diaphram wall seam.
In the present invention, the diaphram wall described in step (2) is conventional diaphram wall.
In the present invention, utilizing thermal infrared imager described in step (3) is according to the outer thermosetting associated hot field picture of diaphram wall surface red.
In the present invention, the analysis described in step (4) is by infra-red heat field picture analysis, abnormal thermal field and position being analyzed, and then carries out judging to breakthrough and position.
The present invention is in Deep Excavation, thermal infrared imager is used to gather the infra-red heat information of diaphram wall body and seam crossing, the thermal field image generated is analyzed, and then judge whether diaphram wall exists seepage and potential breakthrough, it is greatly improved monitoring efficiency, it is possible to round-the-clock real-time monitoring. Use infrared thermal field that foundation ditch carries out monitoring in real time and there is the advantages such as cost is low, efficiency is high, pollution-free.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the present invention.
Fig. 2 is thermal imager operation principle schematic.
The potential breakthrough infrared image of diaphram wall seam that Fig. 3 is corresponding with Fig. 4.
Fig. 4 is the potential breakthrough visible images of diaphram wall seam.
The potential breakthrough schematic three dimensional views of diaphram wall seam that Fig. 5 is corresponding with Fig. 4.
Detailed description of the invention
Below embodiments of the invention being elaborated, the present embodiment is carried out under premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1: the diaphram wall breakthrough test of above sea base hole is example, and concrete application sequentially includes the following steps:
Project profile: field geology exploration shows, stratum is divided into 3 layers in target foundation ditch diaphram wall coverage, and foundation depth is 9m, is that 1. layer is artificial earth fill, thickness 1.5m respectively; 2. 1 layer of silty clay, thickness 1.5m; 2. 3 layers of sandy silt, thickness 3.6m; 3. layer very soft sill clay, thickness 2.4m; 4. it is the soil layers such as the good medium sand of stress below layer.
Step one, deep pit digging, according to design drawing and job specfication requirement, taking out precipitation to cheating below base plate after 0.5m, deep basal pit can proceed by stage excavation, and lift height is 3m.
Step 2, in conjunction with job specfication, carries out apparent mass inspection to deep basal pit diaphram wall, is recorded would be likely to occur the place such as voids and pits, cavity of mass defect, surface infiltration and retention of excessive fluid etc.
Step 3, according to inspection result, carries out further clearly detection target, detection time, target and method is refined, forms formal detection scheme.
Step 4, utilizes thermal infrared imager, and target detection scope is shot, and utilizes body surface infra-red radiation thermosetting infrared radiation images.
Step 5, in conjunction with thermodynamics knowledge, is analyzed by infrared radiation images, and the position that thermal field is abnormal is analyzed and judgement, carries out judging to diaphram wall breakthrough and positions.
The present embodiment is by analyzing infrared radiation images, as shown in Fig. 3, Fig. 5, it follows that at diaphram wall seam quality fault location, diaphram wall Temperature Distribution is significantly different with other site distribution, owing to different material slin emissivity is different, body surface temperature is also different, forms diaphram wall surface temperature spatial abnormal feature.
Seeing that Fig. 4 visible ray picture is diaphram wall body seam crossing, Seepage once occurred, leakage is now blocked by the poly-ethyl ester of one. Infrared thermal imagery image still some seepage vestige near wall seam visibly through left side. The regional temperature field of multi-line section delineation is significantly lower than environment temperature. In this region, mean temperature is at about 18.4 DEG C, and surface is without obvious washmarking. Illustrate there is mass defect inside this region body of wall.
The effect of the present embodiment: on the basis of deep basal pit stage excavation, by thermal infrared imager, carries out judging to foundation ditch diaphram wall seepage easily and quickly and positions.
Claims (1)
1. the method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall, it is characterised in that specifically comprise the following steps that
(1) deep basal pit diaphram wall inspection:
Find diaphram wall seam crossing, and pay close attention to surface of wall transverse crack and breakthrough;
(2) dig a well at the outer seam crossing of foundation ditch and add artificial heat:
Outer in ground wall seam crossing hole dig a well and add artificial heat, improving the temperature of water, constantly portion's potential seepage region infiltration within the walls to ground along with current, ground temperature within the walls also improves constantly, in foundation ditch the temperature of surface of wall also in rising in various degree;
(3) Site Detection is implemented:
Utilize thermal infrared imager, the target in detection scheme is measured, form image, and record and keep relevant infra-red heat field picture;
(4) the potential breakthrough of diaphram wall seam crossing judges:
Analyze the infra-red heat field picture generated, abnormal thermal field is analyzed and judgement, and then carry out judging to breakthrough and position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019859.7A CN103882891B (en) | 2014-01-16 | 2014-01-16 | The method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019859.7A CN103882891B (en) | 2014-01-16 | 2014-01-16 | The method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103882891A CN103882891A (en) | 2014-06-25 |
| CN103882891B true CN103882891B (en) | 2016-06-08 |
Family
ID=50951994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410019859.7A Expired - Fee Related CN103882891B (en) | 2014-01-16 | 2014-01-16 | The method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103882891B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652496B (en) * | 2014-12-26 | 2016-05-04 | 中铁二局工程有限公司 | A kind of diaphram wall percolating water detection method |
| GB201711412D0 (en) * | 2016-12-30 | 2017-08-30 | Maxu Tech Inc | Early entry |
| CN108760745A (en) * | 2018-04-12 | 2018-11-06 | 上海建工集团股份有限公司 | Diaphram wall seam leakage inspector and method |
| CN108489680B (en) * | 2018-04-26 | 2020-12-18 | 中铁十一局集团第二工程有限公司 | Method and system for detecting leakage of foundation surface of basement with room soil |
| CN109577392B (en) * | 2019-01-21 | 2023-09-15 | 中国科学院武汉岩土力学研究所 | Underground continuous wall joint leakage monitoring and repairing device and method based on optical fiber temperature measurement |
| CN112834401A (en) * | 2020-12-22 | 2021-05-25 | 中建四局土木工程有限公司 | Method for rapidly predicting sidewall leakage of underground continuous wall based on infrared technology |
| CN113203527B (en) * | 2021-05-22 | 2021-12-24 | 崇金玲 | Method for detecting leakage point position of underground concrete continuous wall |
| CN114250988B (en) * | 2022-01-24 | 2023-11-21 | 上海市建筑科学研究院有限公司 | Method for detecting and repairing leakage water at bottom joint of precast concrete shear wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636313A (en) * | 2012-04-11 | 2012-08-15 | 浙江工业大学 | Leakage source detecting device based on infrared thermal imaging processing |
| CN102680174A (en) * | 2011-11-30 | 2012-09-19 | 河南科技大学 | System and method for detecting leakage based on infrared image processing |
| CN102776904A (en) * | 2012-07-19 | 2012-11-14 | 同济大学 | Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05203596A (en) * | 1991-05-31 | 1993-08-10 | Maeda Corp | Management of concrete structure |
-
2014
- 2014-01-16 CN CN201410019859.7A patent/CN103882891B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680174A (en) * | 2011-11-30 | 2012-09-19 | 河南科技大学 | System and method for detecting leakage based on infrared image processing |
| CN102636313A (en) * | 2012-04-11 | 2012-08-15 | 浙江工业大学 | Leakage source detecting device based on infrared thermal imaging processing |
| CN102776904A (en) * | 2012-07-19 | 2012-11-14 | 同济大学 | Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103882891A (en) | 2014-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103882891B (en) | The method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall | |
| CN103266638B (en) | A kind of detection method of underground concrete diaphragm wall breakthrough position | |
| De Carlo et al. | Characterization of a dismissed landfill via electrical resistivity tomography and mise-à-la-masse method | |
| Battaglia et al. | Fluorescent tracer tests for detection of dam leakages: the case of the Bumbuna dam-Sierra Leone | |
| CN102776904A (en) | Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields | |
| CN109405871B (en) | Surrounding rock observation system based on double-shield TBM construction tunnel | |
| CN105239609B (en) | Underground continuous wall leakage detection method | |
| CN105239611A (en) | Method for determining influence of waterproof curtain leakage below foundation pit excavation surface on surroundings | |
| CN113029443B (en) | Ultra-deep underground wall leakage risk detection method based on distributed optical fiber sensing | |
| CN108425359B (en) | Method for controlling influence of rainfall on environment by groundwater recharge | |
| CN108241772A (en) | Consider Tunnel Gushing method for determination of amount in the crack artesian aquifer of multiple factors | |
| CN107727337A (en) | A kind of leakage detection method of the foundation pit enclosure structure based on micro logging electrical method | |
| CN102704456A (en) | Method for judging leakage of waterproof curtain of foundation pit by using artificial heat source and temperature tracing of underground water | |
| Pan et al. | Effect of random geometric imperfections on the water-tightness of diaphragm wall | |
| CN105201000A (en) | Wide foundation pit precipitation method capable of remotely monitoring | |
| CN107831529A (en) | A kind of method for lifting tunnel advance geologic prediction accuracy rate | |
| Wang et al. | Evaluation and comparison of different detection technologies on simulated voids near buried pipes | |
| Pantaleo et al. | The ring-shaped thermal field of Stefanos crater, Nisyros Island: a conceptual model | |
| Zhu et al. | Seepage and settlement monitoring for earth embankment dams using fully distributed sensing along optical fibers | |
| KR20150035969A (en) | Apparatus for indicating and closing thermal hole, and method for constructing thermal hole | |
| CN205134393U (en) | A drilling arrangement structure for detecting underground continuous wall seepage | |
| CN102677645A (en) | Multi-field coupling real-time sensing method for horizontal frozen soil | |
| CN206192333U (en) | Prevent layered settlement detection device that silt injected | |
| YOKOYAMA et al. | A review of groundwater observation methods for slow-moving landslide | |
| CN210487976U (en) | Sonar detection device for underground space engineering leakage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20190116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |