CN102776904A - Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields - Google Patents
Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields Download PDFInfo
- Publication number
- CN102776904A CN102776904A CN2012102501528A CN201210250152A CN102776904A CN 102776904 A CN102776904 A CN 102776904A CN 2012102501528 A CN2012102501528 A CN 2012102501528A CN 201210250152 A CN201210250152 A CN 201210250152A CN 102776904 A CN102776904 A CN 102776904A
- Authority
- CN
- China
- Prior art keywords
- diaphragm wall
- detection
- infrared thermal
- underground diaphragm
- foundation ditch
- 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.)
- Pending
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a method for fast predicting side wall leakage of an underground diaphragm wall using infrared thermal fields. The method includes: performing layered excavation to a deep foundation pit; pre-investigating the underground diaphragm wall of the deep foundation pit, and paying attention to positions such as voids and pits, cavities, water seepage surfaces and water gushing surfaces to further determine detecting range and objects; detailing detection time, targets and methods according to pre-investigating results to form a formal detection scheme; using an infrared thermal imager to detect the targets to form images according to the detection scheme and recording and saving the related thermal field images; judging leakage points of the underground diaphragm wall; and analyzing and judging abnormal thermal fields so as to judge and position the leakage points. The method uses clear principles, and is highly adaptive and economical. The infrared thermal imager is used to detect the infrared thermal fields so as to judge and position the leakage points of the underground diaphragm wall of the foundation pit while construction of the foundation pit is not affected. Accordingly, fast and convenient judging and positioning of the leakage of the underground diaphragm wall of the foundation pit are achieved.
Description
Technical field
The invention belongs to and be mainly used in municipal engineering, Industrial and Civil Engineering deep foundation ditch diaphragm wall sidewall leak detection field, be specifically related to kind of a method of utilizing infrared thermal field fast prediction diaphragm wall sidewall seepage.
Background technology
Particularly in the super large ultra-deep foundation pit excavation construction, diaphragm wall is being brought into play important safety guarantee effect at foundation pit construction.Cave in easily if diaphragm wall seepage, foundation ditch side are just kept away, construction in the foundation ditch is caused adverse effect, can threaten construction when serious even directly cause great foundation ditch security incident.Therefore monitoring of leakage is the important step of foundation ditch construction of diaphragm wall.Common way is that certain observation boring is set in foundation ditch diaphragm wall both sides, underground water level is compared observation judged whether that seepage takes place.The common observation effect of this practice is not obvious, and observed result relatively lags behind, thereby falls into a passive position situation, causes the security of foundation ditch construction coefficient high inadequately.In the construction of base pit engineering, it is very important and urgent to improve diaphragm wall monitoring of leakage efficiency and precision.
Thermal field is the natural physical field that is prevalent in the geologic body.Rule and conduction of heat rule that thermal field distributes are closely related, are the bases of carrying out infrared thermal field tracer study.
The present invention is in deep foundation ditch stage excavation process, and every excavation one deck uses thermal infrared imager to gather the infra-red heat information of diaphragm wall body and seam crossing, generates the thermal field image according to infrared induction.The thermal field image is analyzed, and then whether existed seepage and breakthrough to judge and the location, improve monitoring efficient greatly underground diaphragm wall.Not only practiced thrift engineering cost, improved the monitoring efficiency and precision, weakened the influence of monitoring, and used infrared thermal field to monitor to have advantages such as cost is low, efficient is high, pollution-free foundation pit construction.
Existing technical literature retrieval is found that the functional requirement diaphragm wall detection technique similar with the present invention mainly is through sniffer, and the data of utilizing instrument to collect are analyzed and are judged.Like Shanghai Tunnel Engineering stock Co., Ltd; The Yang Lei of Institute of Acoustics, Chinese Academy of Sciences, Donghai Institute; Wang Runtian; Zhang Ruichang; The patent of invention of Zhu Qiang " detection method of the diaphragm wall clay seam " (patent No.: 200710047373); The patent of invention of the Chen Liang of Hohai University, Li Gang, Wang Yuming, Fu Changjing, Yan Xiaolu " is the system and method for tracer detecting position of dam leakage passage with the temperature " (patent No.: CN101261053A).But these patents are not all considered and are utilized thermal infrared imager, utilize thermal field image and thermal field analysis underground diaphragm wall to be carried out the judgement of seepage.
Summary of the invention
Deficiency and defective to prior art; Technical problem to be solved by this invention is in deep foundation ditch stage excavation process; Utilize thermal infrared imager to gather the infra-red heat information of diaphragm wall body and seam crossing; Generate the thermal field image according to infrared induction, a kind of method of utilizing infrared thermal field fast prediction diaphragm wall sidewall seepage is provided.
In order to solve the problems of the technologies described above, the method for utilizing infrared thermal field fast prediction diaphragm wall sidewall seepage that the present invention proposes, concrete steps are following:
(1) deep foundation ditch stage excavation.Along with the progress of basic engineering construction, the deep foundation ditch stage excavation, diaphragm wall progressively exposes, and tentatively possesses the condition of detection;
(2) preset of deep foundation ditch diaphragm wall is looked into.It is at design detection scheme, the trial sex investigation that formally carries out before carrying out detection that preset is looked into; Main purpose is an inspection diaphragm wall apparent mass; Pay close attention to voids and pits, cavity, surface positions such as infiltration and water burst are arranged; Further to define detection range and object, make detect have more purpose, more science is with rationally;
(3) formulate detection scheme.Come to an end really according to preset, detection range is carried out further clearly, detection time, target and method are carried out refinement, form formal detection scheme;
(4) implement on-the-spot the detection.According to detection scheme, utilize thermal infrared imager, the target in the detection scheme is measured, form image, and record and keep relevant infra-red heat field picture;
(5) the diaphragm wall breakthrough is judged.Analyze the infra-red heat field picture that generates, the abnormal temperature field is analyzed, and then breakthrough is judged and the location.
Among the present invention, the described deep foundation ditch stage excavation of step (1) is opened spy for conventional deep foundation ditch layering.
Among the present invention, the described diaphragm wall of step (2) is conventional diaphragm wall.
Among the present invention, utilizing thermal infrared imager described in the step (4) is according to the outer thermosetting associated hot field picture of diaphragm wall surface red.
Among the present invention, the analysis described in the step (5) is through to the analysis of infra-red heat field picture, unusual thermal field and position is analyzed, and then breakthrough is judged and the location.
This method definite in principle; Compliance is strong, can under the condition of deep foundation ditch stage excavation, utilize thermal infrared imager; Through it underground diaphragm wall surface and the induction of seam crossing infra-red heat are formed image; Thereby carrying out the judgement of seepage, reach the judgement of carrying out foundation ditch diaphragm wall seepage quickly and easily and the dual purpose of location, is a kind of economically viable method.
Description of drawings
Fig. 1 is a schematic flow sheet of the present invention.
Fig. 2 is the foundation ditch layout plan.
Fig. 3 is a diaphragm wall stage excavation sketch map.
Fig. 4 is thermal imaging system critical piece and work sketch map.Label among the figure: 1 is camera lens, and 2 is grating, and 3 is probe.
Fig. 5 is diaphragm wall seam and not good enough some sketch map of presentation quality.Wherein: (a) being the diaphragm wall seam, (b) is the not good enough point of presentation quality.
Fig. 6 is diaphragm wall seam and not good enough some thermal infrared imager image of presentation quality.Wherein: (a) being diaphragm wall seam thermal infrared imager figure, (b) is not good enough some thermal infrared imager image of presentation quality.
The specific embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Embodiment 1: with the test of somewhere foundation ditch diaphragm wall breakthrough is example, and concrete application is carried out according to the following steps:
Project profile: on-the-spot geological prospecting shows that the stratum is divided into 3 layers in target foundation ditch diaphragm wall influence basin, and foundation depth is 9m, be respectively 1. the layer artificial earth fill, bed thickness 1.5m; 2.
1Layer silty clay, bed thickness 1.5m; 2.
3Layer sandy silt, bed thickness 3.6m; 3. layer mud matter silty clay, bed thickness 2.4m; 4. below the layer soil layers such as stressed medium sand preferably.
Step 1, the deep foundation ditch stage excavation according to design drawing and job specfication requirement, is being taken out precipitation to below base plate of foundation pit behind 0.5 m, and deep foundation ditch can begin to carry out stage excavation, and lift height is 3m.
Step 2 in conjunction with job specfication, is carried out the apparent mass inspection to the deep foundation ditch diaphragm wall, and place such as voids and pits, cavity, surface infiltration and the water burst etc. that possibly have mass defect are carried out mark and record (see figure 5);
Step 3 comes to an end really according to preset, and detection range is carried out further clearly, and detection time, target and method are carried out refinement, forms formal detection scheme.
Step 4 is utilized thermal infrared imager, and the target detection scope is taken, and utilizes body surface infrared radiation thermosetting infrared radiation image (see figure 6).
Step 5 in conjunction with thermodynamics knowledge, through the infrared radiation graphical analysis, to analyzing and judge the unusual position of thermal field, is judged and the location underground diaphragm wall breakthrough.
Can know through infrared radiation graphical analysis (see figure 6); In diaphragm wall infiltration place; The diaphragm wall Temperature Distribution is different with normal distribution, because the place of seepage can be taken away energy by flow, body surface temperature and normal temperature are low; Form the diaphragm wall surface temperature and distribute unusually, on the infra-red heat field pattern, be reflected as black.Analysis is visible, and breakthrough occurs in illustrated black place, and promptly seepage occurs in the diaphragm wall seam crossing (seeing black part on Fig. 6 infra-red heat field pattern) that inspection is found.
The effect of present embodiment: on the basis of deep foundation ditch stage excavation,, easily and quickly foundation ditch diaphragm wall seepage is judged and the location through thermal infrared imager.
Claims (2)
1. method of utilizing infrared thermal field fast prediction diaphragm wall sidewall seepage is characterized in that concrete steps are following:
(1) deep foundation ditch stage excavation, along with the progress of basic engineering construction, the deep foundation ditch stage excavation, diaphragm wall progressively exposes, and tentatively possesses the condition of detection;
(2) preset of deep foundation ditch diaphragm wall is looked into, and preset is looked into and paid close attention to voids and pits, cavity, surface infiltration and water burst position, clear and definite detection range and object are arranged;
(3) formulate detection scheme, come to an end really, detection range is carried out further clearly, detection time, target and method are carried out refinement, form formal detection scheme according to preset;
(4) implement on-the-spot the detection,, utilize thermal infrared imager, the target in the detection scheme is measured, form image according to detection scheme, and record and keep relevant infra-red heat field picture;
(5) the diaphragm wall breakthrough is judged, analyzes the infra-red heat field picture that generates, and unusual thermal field is analyzed and is judged, and then breakthrough is judged and the location.
2. the method for utilizing infrared thermal field fast prediction diaphragm wall sidewall seepage according to claim 1 is characterized in that described deep foundation ditch stage excavation is conventional excavation of foundation pit, and is stage excavation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102501528A CN102776904A (en) | 2012-07-19 | 2012-07-19 | Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102501528A CN102776904A (en) | 2012-07-19 | 2012-07-19 | Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102776904A true CN102776904A (en) | 2012-11-14 |
Family
ID=47122000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102501528A Pending CN102776904A (en) | 2012-07-19 | 2012-07-19 | Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102776904A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147467A (en) * | 2013-03-13 | 2013-06-12 | 中国建筑第八工程局有限公司 | Leak detection device for underground diaphragm wall and construction method of leak detection device |
| CN103884431A (en) * | 2013-12-31 | 2014-06-25 | 华中科技大学 | Infrared imaging detection and positioning method of underground building in plane surface environment |
| CN103882891A (en) * | 2014-01-16 | 2014-06-25 | 同济大学 | Method for utilizing infrared thermal fields to quickly predict side wall leakage of underground continuous wall |
| CN103912311A (en) * | 2014-03-11 | 2014-07-09 | 北京华安奥特科技有限公司 | Mine infrared aqueous detecting and water inrush warning method |
| CN104652496A (en) * | 2014-12-26 | 2015-05-27 | 中铁二局股份有限公司 | Detection method of underground continuous wall water seepage |
| CN107256623A (en) * | 2017-02-22 | 2017-10-17 | 许兰兰 | Signal data is received and processing system |
| CN108489680A (en) * | 2018-04-26 | 2018-09-04 | 中铁十局集团第二工程有限公司 | Band room cubsoil basement base surface leakage detection method and system |
| 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 |
| CN110130414A (en) * | 2019-05-20 | 2019-08-16 | 中铁七局集团郑州工程有限公司 | A method of detection diaphram wall quality of wall |
| CN110458044A (en) * | 2019-07-22 | 2019-11-15 | 苏州慧润百年物联科技有限公司 | A kind of judgement ground immersion method based on image recognition |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080265162A1 (en) * | 2006-10-16 | 2008-10-30 | Flir Systems Ab | Method for displaying a thermal image in a IR camera and an IR camera |
| CN102261982A (en) * | 2011-04-26 | 2011-11-30 | 同济大学 | Early warning method for water seepage of tunnel |
| CN102279081A (en) * | 2011-04-26 | 2011-12-14 | 同济大学 | Method and device for detecting water seepage of tunnel |
-
2012
- 2012-07-19 CN CN2012102501528A patent/CN102776904A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080265162A1 (en) * | 2006-10-16 | 2008-10-30 | Flir Systems Ab | Method for displaying a thermal image in a IR camera and an IR camera |
| CN102261982A (en) * | 2011-04-26 | 2011-11-30 | 同济大学 | Early warning method for water seepage of tunnel |
| CN102279081A (en) * | 2011-04-26 | 2011-12-14 | 同济大学 | Method and device for detecting water seepage of tunnel |
Non-Patent Citations (2)
| Title |
|---|
| 沈春林: "《建筑的渗漏与防治》", 30 September 2008, 中国建材工业出版社 * |
| 麻长安: "地下连续墙基坑支护技术的工程实践", 《广西城镇建设》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147467A (en) * | 2013-03-13 | 2013-06-12 | 中国建筑第八工程局有限公司 | Leak detection device for underground diaphragm wall and construction method of leak detection device |
| CN103884431A (en) * | 2013-12-31 | 2014-06-25 | 华中科技大学 | Infrared imaging detection and positioning method of underground building in plane surface environment |
| US9741120B2 (en) | 2013-12-31 | 2017-08-22 | Huazhong University Of Science And Technology | Infrared imaging detection and positioning method for underground building in planar land surface environment |
| CN103884431B (en) * | 2013-12-31 | 2015-09-09 | 华中科技大学 | The infrared imaging detection localization method of hypogee in plane ground surface environment |
| CN103882891B (en) * | 2014-01-16 | 2016-06-08 | 同济大学 | The method utilizing infrared thermal field fast prediction side wall leakage of underground diaphragm wall |
| CN103882891A (en) * | 2014-01-16 | 2014-06-25 | 同济大学 | Method for utilizing infrared thermal fields to quickly predict side wall leakage of underground continuous wall |
| CN103912311A (en) * | 2014-03-11 | 2014-07-09 | 北京华安奥特科技有限公司 | Mine infrared aqueous detecting and water inrush warning method |
| CN104652496A (en) * | 2014-12-26 | 2015-05-27 | 中铁二局股份有限公司 | Detection method of underground continuous wall water seepage |
| CN107256623A (en) * | 2017-02-22 | 2017-10-17 | 许兰兰 | Signal data is received and processing system |
| CN107256623B (en) * | 2017-02-22 | 2018-08-14 | 兰州飞天网景信息产业有限公司 | Signal data receives and processing system |
| 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 |
| CN108489680A (en) * | 2018-04-26 | 2018-09-04 | 中铁十局集团第二工程有限公司 | Band room cubsoil basement base surface leakage detection method and system |
| CN110130414A (en) * | 2019-05-20 | 2019-08-16 | 中铁七局集团郑州工程有限公司 | A method of detection diaphram wall quality of wall |
| CN110458044A (en) * | 2019-07-22 | 2019-11-15 | 苏州慧润百年物联科技有限公司 | A kind of judgement ground immersion method based on image recognition |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102776904A (en) | Method for fast predicting side wall leakage of underground diaphragm wall using infrared thermal fields | |
| CN103266638B (en) | A kind of detection method of underground concrete diaphragm wall breakthrough position | |
| Atef et al. | Multi-tier method using infrared photography and GPR to detect and locate water leaks | |
| CN103882891A (en) | Method for utilizing infrared thermal fields to quickly predict side wall leakage of underground continuous wall | |
| Zhang et al. | Predicting the grouting effect on leakage-induced tunnels and ground response in saturated soils | |
| Li et al. | Study of seepage field distribution and its influence on urban tunnels in water-rich regions | |
| Battaglia et al. | Fluorescent tracer tests for detection of dam leakages: The case of the Bumbuna dam-Sierra Leone | |
| Anchuela et al. | Internal characterization of embankment dams using ground penetrating radar (GPR) and thermographic analysis: A case study of the Medau Zirimilis Dam (Sardinia, Italy) | |
| CN102704456A (en) | Method for judging leakage of waterproof curtain of foundation pit by using artificial heat source and temperature tracing of underground water | |
| CN113029443B (en) | Ultra-deep underground wall leakage risk detection method based on distributed optical fiber sensing | |
| Gokhale et al. | A new development in locating leaks in sanitary sewers | |
| Pan et al. | Effect of random geometric imperfections on the water-tightness of diaphragm wall | |
| Wang et al. | Evaluation and comparison of different detection technologies on simulated voids near buried pipes | |
| Meng et al. | Research of concrete dam leakage detection based on anomaly current field of reservoir water | |
| Park et al. | A preliminary study on leakage detection of deteriorated underground sewer pipes using aerial thermal imaging | |
| JP5541533B2 (en) | Estimating method of water leakage position of earth retaining wall and ground excavation method | |
| Su et al. | Wellbore leakage risk management in CO2 geological utilization and storage: A review | |
| Ye et al. | Intelligent Risk Assessment for Dewatering of Metro‐Tunnel Deep Excavations | |
| Jolly et al. | Resolution of electrical imaging of fluid movement in landfills | |
| Motamedi et al. | Thermal performance of the ground in geothermal pavements | |
| Zhu et al. | Seepage and settlement monitoring for earth embankment dams using fully distributed sensing along optical fibers | |
| Lines et al. | Investigation of groundwater flow and saturated multi-layer soil on the ground temperature response of an energy pile through thermal response and recovery testing | |
| Wu et al. | Risk assessment of seepage failure in deep excavations based on fuzzy analytic hierarchy process and cloud model | |
| Zhao et al. | Flow-field fitting method applied to the detection of leakages in the concrete gravity dam | |
| Huang et al. | Detection of leakage paths at the Wanyao dam body in Southwest China by hydrochemical analysis and tracer testing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121114 |