CN201716161U - System for detecting position of dam leakage channel by taking temperature as tracer - Google Patents
System for detecting position of dam leakage channel by taking temperature as tracer Download PDFInfo
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- CN201716161U CN201716161U CN2010202240473U CN201020224047U CN201716161U CN 201716161 U CN201716161 U CN 201716161U CN 2010202240473 U CN2010202240473 U CN 2010202240473U CN 201020224047 U CN201020224047 U CN 201020224047U CN 201716161 U CN201716161 U CN 201716161U
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Abstract
The utility model provides a system used for detecting the position of a dam leakage channel, which belongs to the technical field of hydraulic and hydroelectric engineering. The system comprises N temperature sensors, a signal acquisition device, a signal fusion processing device, a control system and a data terminal device, wherein N is a natural number; and the N temperature sensors are evenly distributed and arranged in the dam body of the dam and respectively connected with the signal acquisition device, and the signal acquisition device, the signal fusion processing device, the control system and the data terminal device are serially connected in sequence. The platinum resistor PT1000 is taken as the temperature-sensing element, the control system is used for controlling the switching of the network nodes, and the circulatory monitoring of the temperature sensor is carried out, therefore, the temperature detection for the fractured surface of the entire dam is realized.
Description
Technical field:
The utility model relates to a kind of system of detecting position of dam leakage passage, belongs to the Hydraulic and Hydro-Power Engineering technical field.
Background technology:
China has successively developed the detection instrument for hidden peril in dyke device based on methods such as TDEM, natural electric field method, resistivity method, seismic event, radar waves." the flow field method " that radioisotope logging technology, natural tracer technique and the Central South University of Hohai University's research simultaneously proposes can effectively be found dam hidden danger through the engineering practice checking.Traditional geophysical survey method is surveyed leak path, cost height not only, and also detection accuracy is low; Though it is high that tracer method is surveyed the dam leakage precision, belong to and diminish detection, and use restriction more to radioelement both at home and abroad; Temperature trace method detection dam leakage has simple and easy to do, the high and free of contamination characteristics of detection accuracy.Temperature is surveyed the research of dam leakage hidden danger, by the ground temperature research and development.The research of dam leakage hidden danger is surveyed in China's temperature spike, has experienced qualitative analysis and has judged and the preliminary theory study stage.Judge the stage in qualitative analysis, the main Temperature Distribution situation of utilizing the temperature judgement dam body of water in the boring.According to the temperature anomaly point, judge parameters such as dam body hidden leakage defect buried depth and scale.The preliminary theory study stage mainly is according to the situation of heat transfer theory in conjunction with dam body, has set up temperature field detecting model ideally, and has tentatively attempted utility theory model solution engineering problem.Yet because the complicacy of dykes and dams boundary condition and the diversity of seepage situation, this theory still is in the exploratory stage at present.Survey dam leakage hidden danger with temperature and can not cause environmental pollution, can also reach good effect, but also there is not the complete system of a cover to carry out the detection analysis of temperature at present, draw major part also based on manual drawing for isotherm, the utility model has designed hardware-software, had the complete detection system of a cover of one's own, relied on software can draw isothermal map automatically, the leak path position of judging dykes and dams has been provided good foundation.
The utility model content
The utility model purpose:
Technical matters to be solved of the present utility model is at the deficiencies in the prior art, and proposing a kind of is the system of the detecting position of dam leakage passage of tracer agent with the temperature.
Technical scheme:
The utility model is for realizing that above-mentioned utility model purpose adopts following technical scheme:
A kind of is the system of tracer agent detecting position of dam leakage passage with the temperature, comprises N temperature sensor, signal deriving means, signal processing apparatus, control system, data link and data terminal unit, and N is a natural number; Wherein N temperature sensor is uniformly set in the dam body of dykes and dams, is connected with the signal deriving means respectively, and signal deriving means, signal processing apparatus, control system, data link and data terminal unit are connected in series successively.
Further, the utility model is that temperature sensor is PT1000 in the system of tracer agent detecting position of dam leakage passage with the temperature.
Further, the utility model is the bridge diagram of signal deriving means for returning to zero in the system of tracer agent detecting position of dam leakage passage with the temperature.
Further, the utility model is that signal processing device is changed to differential amplifier circuit, single order active low-pass filter circuit and high precision analogue change-over circuit in the system of tracer agent detecting position of dam leakage passage with the temperature, and wherein differential amplifier circuit connects single order active low-pass filter circuit and high precision analogue change-over circuit successively.
Further, the utility model is that data terminal unit is a computer system in the system of tracer agent detecting position of dam leakage passage with the temperature.
Further, the utility model with the temperature be in the system of tracer agent detecting position of dam leakage passage control system for single-chip microcomputer 4051.
Ultimate principle of the present utility model is:
In view of the temperature of storehouse water often there are differences with the temperature of dam body, if there is leak path in dam body, under the effect of seepage flow, can break original Temperature Distribution, form the Temperature Distribution under the seepage effect.In conjunction with graph technology and software engineering, under the development seepage effect, the dykes and dams temperature distribution history is promptly drawn the isotherm in dykes and dams temperature field at this.
In view of the shape in the longitudinal profile of dam body and the distribution of temperature sensor network node, this method adopts the rectangular node method to draw the temperature isoline.The longitudinal profile that is about to dam body is divided into several little grids, and tries not to make net point to overlap with the temperature sensor network node.Read in raw data earlier, and then carry out data gridding, wait warm spot search and isotherm to follow the trail of then, carry out isothermal drafting at last.
Beneficial effect:
1, the utility model utilizes the dykes and dams intelligence infiltrometer device of temperature for tracer agent, can not pollute environment, also can not produce harm to operating personnel's health, and cheap, realizes easily;
When 2, utilizing detection method of the present utility model to carry out parameter detection, operation such as do not need to hole has applicability widely;
3, the utility model is based on the convection heat transfer' heat-transfer by convection model of groundwater velocity, and Temperature Distribution has good regularity and stability, makes result of detection accurate, and good reproducibility;
4, the utility model adopts the high-precision temperature sensing probe, and temperature survey is accurate, and the measurement result precision has a good guarantee.The utility model is simple to operate, is convenient to the staff and grasps;
5, the utility model practicality height has very high use value;
6, the isotherm drawn of the utility model is comparatively accurate, can judge the position of leak path comparatively accurately, can be widely used in engineering.
Description of drawings:
Fig. 1 is the method block diagram that position of dam leakage passage of the present utility model is surveyed.
The control module main flow chart that Fig. 2 surveys for position of dam leakage passage.
Fig. 3 is measurement module process flow diagram in the position of dam leakage passage detection.
Fig. 4 draws process flow diagram for isotherm.
Fig. 5 is the isothermal map of drawing in the utility model.
Fig. 6 is the hardware chart of detection system described in the utility model.
Specific embodiments:
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme:
As shown in Figure 1, the method block diagram of position of dam leakage passage detection described in the utility model.Can be divided into two parts, one for measuring control, and another is for analyzing.In measuring control,, obtain Temperature numerical then, preserve data at last by temperature value is carried out data acquisition.In the analytic process, generate position and the scale that isotherm is judged dam leakage passage by the data of preserving before.
The control module main flow chart that Fig. 2 surveys for position of dam leakage passage.The user at first carries out the parameter setting, mainly comprise communication setting and measurement pattern setting, wherein measurement pattern setting can be selected to measure automatically and the manual measurement pattern, send the beginning measuring command after setting completed, system just begins to take turns temperature survey, the automatic input computer software systems of measurement result; The user can select the preservation of data and further handle afterwards.
Fig. 3 is measurement module process flow diagram in the position of dam leakage passage detection.After software systems are received user's probe command, detection mode according to user's setting, the control hardware detection system begins to survey, result of detection is beamed back computer system, and computing machine carries out temperature value and calculates, then the form displays temperature value by tabulating, at last can be according to temperature value, automatically draw isothermal map, the user can judge the position of seepage channel according to temperature displayed abnormity point in the isothermal map.
Fig. 4 draws process flow diagram for isotherm.At first, system carries out gridding according to the temperature data that reads in, and the temperature value in the grid is carried out the isothermal point search, follows the trail of isotherm then, draws isotherm at last.
Fig. 5 utilizes the isotherm of this software drafting for by engineering gained data.The lower left corner with the dam body longitudinal profile among the figure is that true origin is set up coordinate system, and its dimensional units is: cm.In the drawings, can see significantly, locate, have tangible temperature anomaly zone, and extend toward the 110-direction in the temperature anomaly district in (110,120).Simultaneously, on the top in the longitudinal profile of dykes and dams, temperature is layered distribution substantially.Can tentatively judge, have strong blowby area in (110,120) of dykes and dams.
Shown in Figure 6, be system overview of the present utility model.(1), when building the dam, in dam body, buries some temp probes underground; (2), after the dam builds up, the temperature value of each probe of real time record; (3), according to the temperature of each probe, the position of analysis and judgement dam leakage passage and scale.
The dykes and dams intelligent detecting system that utilizes temperature as tracer agent described in the utility model, the temperature bottom layer signal through obtain with fusion treatment after, by control system temperature data is transferred to data terminal.Ooze network in view of the temperature survey that makes up and comprise a plurality of temperature probe nodes, native system is by control system, and the Control Network node switches, and implements the circulatory monitoring of temperature sensor, thereby the temperature that realizes the dykes and dams section is surveyed.
The utility model with PT1000 as temp probe, earlier convert temperature signal to electric signal, adopt MAX197 to carry out the A/D conversion, wave circuit is sent signal into single-chip microcomputer after filtration, single-chip microcomputer sends to the MAX485 chip with the signal that receives through serial ports, and the MAX485 chip converts the Transistor-Transistor Logic level of single-chip microcomputer to differential signal, changes the USB module through A, B end to 485 and sends, 485 change the USB module receives A, B differential signal, resolves the data that single-chip microcomputer sends.Wherein the switching of temperature detection network node adopts analog switch (CD4051) as switching device.Utilize the software of writing voluntarily, demonstrate the temperature value that temperature detects.By analysis, can judge the position and the scale of dam leakage passage.The utility model need not be holed and be surveyed, and can directly temp probe be embedded in the dam body, reduces the quantities of observation process.By burying a plurality of temp probes underground, the utility model can also carry out multiple spot in the dam surveys, thereby obtains the temperature value of whole section.
Introduce detection method of the present utility model below in detail,
Steps A, acquisition process step specifically comprise:
A1, employing temperature sensor obtain the temperature information of each sensing point of dykes and dams, and temperature information herein embodies by the variation of temperature sensor self resistance;
A2, employing signal deriving means change into voltage signal with the temperature information of A1 step, mainly are by bridge diagram the resistance of sensor in the steps A 1 to be changed to be converted to change in voltage herein;
A3, employing signal processing apparatus transform the Temperature numerical information that obtains with the described voltage signal of A2 step through amplification, filtering, high precision analogue;
Step B, measurement controlled step specifically comprise:
B1, data communication step: the Temperature numerical information of each sensing point that steps A 3 is obtained sends to data terminal unit by data link with Temperature numerical information;
B2, data processing step: the Temperature numerical information that the B1 step is sent is carried out the validity judgement, average after removing maximal value and minimum value, Temperature numerical information after averaging is converted into temperature value, transfer process is the inverse process of steps A, being about to the Temperature numerical information translation is corresponding voltage signal values, again voltage signal values is converted to the sensor electrical resistance,, calculates temperature value by sensor parameters;
B3, data are preserved step: the form of the temperature value after the described conversion of step B2 with list data is kept in the computing machine;
Step C, Measurement and analysis step:
The list data file that C1, opening steps B3 preserve, the longitudinal profile that is about to dam body is divided into several little grids, and try not to make net point to overlap with the temperature sensor network node, then, temperature value to node on the grid carries out interpolation fitting, interpolation adopts the Krige method, and this is the spatial data approximating method that geological sciences and engineering circle are most widely used; With the temperature on the grid node is initial point, and search waits warm spot between all the other grid nodes, after all isothermal point search are come out, with its regular one by one coupling together, just form an isotherm, so repeatedly, finish up to all isotherms are all drawn;
C2, user judge the temperature anomaly point according to isothermal map, promptly judge the leak path position.
Claims (6)
1. one kind is the system of tracer agent detecting position of dam leakage passage with the temperature, it is characterized in that: comprise N temperature sensor, signal deriving means, signal processing apparatus, control system, data link and data terminal unit, N is a natural number; Wherein N temperature sensor is uniformly set in the dam body of dykes and dams, is connected with the signal deriving means respectively, and signal deriving means, signal processing apparatus, control system, data link and data terminal unit are connected in series successively.
2. according to claim 1 is the system of tracer agent detecting position of dam leakage passage with the temperature, it is characterized in that: described temperature sensor is PT1000.
3. according to claim 1 is the system of tracer agent detecting position of dam leakage passage with the temperature, it is characterized in that: the bridge diagram of described signal deriving means for returning to zero.
4. according to claim 1 is the system of tracer agent detecting position of dam leakage passage with the temperature, it is characterized in that: described signal processing device is changed to differential amplifier circuit, single order active low-pass filter circuit and high precision analogue change-over circuit, and wherein differential amplifier circuit connects single order active low-pass filter circuit and high precision analogue change-over circuit successively.
5. according to claim 1 is the system of tracer agent detecting position of dam leakage passage with the temperature, it is characterized in that: described data terminal unit is a computer system.
6. according to claim 1 is the system of tracer agent detecting position of dam leakage passage with the temperature, it is characterized in that: described control system is with single-chip microcomputer 4051.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202240473U CN201716161U (en) | 2010-06-12 | 2010-06-12 | System for detecting position of dam leakage channel by taking temperature as tracer |
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| CN2010202240473U CN201716161U (en) | 2010-06-12 | 2010-06-12 | System for detecting position of dam leakage channel by taking temperature as tracer |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858991A (en) * | 2010-06-12 | 2010-10-13 | 河海大学 | System and method for detecting position of dam leakage passage by using temperature as tracer |
| CN102162765A (en) * | 2011-01-26 | 2011-08-24 | 南京航空航天大学 | System and method for detecting leakage of high-temperature gas in high-temperature high-pressure guide pipe of airplane |
| CN102175399A (en) * | 2011-02-24 | 2011-09-07 | 河海大学 | Method for judging grouting effect of dam body |
| CN102721514A (en) * | 2012-04-27 | 2012-10-10 | 河海大学 | Method for detecting leakage passage based on entropy weight fuzzy clustering |
| CN104048696A (en) * | 2013-03-15 | 2014-09-17 | 阿斯特里姆有限责任公司 | Detection device for detecting at least one fault condition |
| CN104458130A (en) * | 2014-12-01 | 2015-03-25 | 华北水利水电大学 | Method for detecting multiple concentrated leakage positions of rock and earth mass based on ground temperature data |
| CN105738140A (en) * | 2016-02-17 | 2016-07-06 | 河海大学 | Wading structure object and foundation seepage behavior adaptive identification system and method |
| CN106338366A (en) * | 2016-10-10 | 2017-01-18 | 河海大学 | Seepage monitoring apparatus and monitoring method thereof |
| CN107272080A (en) * | 2017-07-01 | 2017-10-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Site standardization analysis method for underground water leakage channel investigation |
| CN107490455A (en) * | 2017-09-13 | 2017-12-19 | 长江勘测规划设计研究有限责任公司 | Earth and rockfill dam seepage real-time monitoring device and monitoring method based on warming imaging |
| CN107607265A (en) * | 2017-10-09 | 2018-01-19 | 中国水利水电科学研究院 | Seepage recognition positioning method and device based on temperature time-space distribution graph |
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2010
- 2010-06-12 CN CN2010202240473U patent/CN201716161U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858991A (en) * | 2010-06-12 | 2010-10-13 | 河海大学 | System and method for detecting position of dam leakage passage by using temperature as tracer |
| CN102162765A (en) * | 2011-01-26 | 2011-08-24 | 南京航空航天大学 | System and method for detecting leakage of high-temperature gas in high-temperature high-pressure guide pipe of airplane |
| CN102175399A (en) * | 2011-02-24 | 2011-09-07 | 河海大学 | Method for judging grouting effect of dam body |
| CN102721514A (en) * | 2012-04-27 | 2012-10-10 | 河海大学 | Method for detecting leakage passage based on entropy weight fuzzy clustering |
| CN104048696A (en) * | 2013-03-15 | 2014-09-17 | 阿斯特里姆有限责任公司 | Detection device for detecting at least one fault condition |
| CN104458130B (en) * | 2014-12-01 | 2017-02-01 | 华北水利水电大学 | Method for detecting multiple concentrated leakage positions of rock and earth mass based on ground temperature data |
| CN104458130A (en) * | 2014-12-01 | 2015-03-25 | 华北水利水电大学 | Method for detecting multiple concentrated leakage positions of rock and earth mass based on ground temperature data |
| CN105738140A (en) * | 2016-02-17 | 2016-07-06 | 河海大学 | Wading structure object and foundation seepage behavior adaptive identification system and method |
| CN105738140B (en) * | 2016-02-17 | 2018-01-19 | 河海大学 | Paddle works and its basic observed seepage behavior optical fiber Adaptive Identification system and method |
| CN106338366A (en) * | 2016-10-10 | 2017-01-18 | 河海大学 | Seepage monitoring apparatus and monitoring method thereof |
| CN107272080A (en) * | 2017-07-01 | 2017-10-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Site standardization analysis method for underground water leakage channel investigation |
| CN107272080B (en) * | 2017-07-01 | 2019-04-02 | 中国电建集团贵阳勘测设计研究院有限公司 | Site standardization analysis method for underground water leakage channel investigation |
| CN107490455A (en) * | 2017-09-13 | 2017-12-19 | 长江勘测规划设计研究有限责任公司 | Earth and rockfill dam seepage real-time monitoring device and monitoring method based on warming imaging |
| CN107607265A (en) * | 2017-10-09 | 2018-01-19 | 中国水利水电科学研究院 | Seepage recognition positioning method and device based on temperature time-space distribution graph |
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Granted publication date: 20110119 Termination date: 20130612 |