CN102662191A - Underground pipeline tomography system for underground space - Google Patents
Underground pipeline tomography system for underground space Download PDFInfo
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- CN102662191A CN102662191A CN2012101822964A CN201210182296A CN102662191A CN 102662191 A CN102662191 A CN 102662191A CN 2012101822964 A CN2012101822964 A CN 2012101822964A CN 201210182296 A CN201210182296 A CN 201210182296A CN 102662191 A CN102662191 A CN 102662191A
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Abstract
本发明涉及一种面向地下空间开发的地下管线层析成像系统，包含：地面可控震源，其通过释放能量形成向地下传播的弹性波；弹性波检波器阵列，包含若干分别设置在地面或埋设在地下的弹性波检波器，采集经由地下管线反射后的弹性波反射信息；以及多道地震仪，其分别和每个弹性波检波器通过电缆连接，接收由弹性波检波器阵列所采集的弹性波反射信息，并经过数据处理后形成地下管线分布的三维图像信息。本发明抗干扰能力强，探测深度广，精确提供地下管线分布的高分辨率的三维图像信息，并且适用于各种材质和埋设深度的地下管线的探测。
The invention relates to an underground pipeline tomography imaging system developed for underground space, comprising: a ground vibrator, which releases energy to form elastic waves propagating underground; an array of elastic wave detectors, including several The elastic wave detectors in the ground collect the elastic wave reflection information reflected by the underground pipeline; and the multi-channel seismometers are respectively connected to each elastic wave detector through cables to receive the elastic wave detector array collected by the elastic wave detectors. Wave reflection information, and the three-dimensional image information of underground pipeline distribution is formed after data processing. The invention has strong anti-interference ability, wide detection depth, accurately provides high-resolution three-dimensional image information of underground pipeline distribution, and is suitable for detection of underground pipelines of various materials and buried depths.
Description
Technical field
The present invention relates to a kind of underground utilities chromatographic imaging system, refer in particular to a kind of underground utilities chromatographic imaging system that is applied to the underground space development of different depth, belong to the meticulous field of detecting of underground utilities.
Background technology
Along with China's economic development, quickening of urbanization process, metropolitan land resource becomes in short supply, and the exploitation of the underground space then becomes inexorable trend.But the urban underground space development and use are a very complicated job, and the urban underground space structure is numerous and diverse, and underground utilities distribution Miru spider net needs multidisciplinary, various technical service.The effective and reasonable the most basic most important work of utilizing urban underground space resource, structure attribute and the underground utilities of verifying urban underground space exactly distribute, and could plan the development and utilization of the underground space then accurately and effectively.Therefore, the space distribution position of accurately verifying the complicated underground utilities in city just seems particularly important.
In the existing engineering, adopt instruments such as electromagnetism pipeline orientator and GPR that the distributing position of underground utilities is surveyed usually.On principle, there is following defective in these conventional measuring methods: the first, and the degree of depth that detectable underground utilities are buried underground is more shallow, is no more than 5 meters usually; The second, detection accuracy is subject to the interference of electromagnetic field and ferromagnetic object, because in the city, there is the strong electromagnetic source, comprises hi-line, reinforced concrete pavement, communication base station etc., so Effect on Detecting is relatively poor; The 3rd, often can only be qualitative for the detection of underground utilities, and be difficult to accomplish accurately quantitative accurate detection; The 4th, the method for utilizing each detection instrument to survey all only is applicable to the pipeline survey of a certain type of material, such as metallic conduit, therefore lacks versatility.
In view of the shortcoming and the restriction that exist in the prior art described above; When urban underground space is developed; Need a kind of autonomous, jamproof underground utilities three-dimensional detection technology badly; The three-dimensional image information that accurately provides underground utilities to distribute, and this technology can be applicable to the detection of the underground utilities of the various materials and the depth of burying.
Therefore, the CT scan that can use for reference medically is theoretical, uses underground chromatography imaging technique to come to survey in detail the physical parameter of the investigation underground space.At present, promoted widely in the petroleum prospecting that described underground chromatography imaging technique is little at interference environment, the detection of a target is big, coal exploration, the ore prospecting and used, and obtained good effect.
But; When should underground chromatography imaging technique being applied to that City Buried Pipeline surveyed imaging; Still have two core technology problems still need solve: the first, need significantly reduce urban environment and disturb (for example electromagnetic interference (EMI), noise etc.) influence Image-forming instrument; The second, how to realize high-resolution underground tomography.
Summary of the invention
The purpose of this invention is to provide a kind of underground utilities chromatographic imaging system towards underground space development; Antijamming capability is strong; Investigation depth is wide, and the high-resolution three-dimensional image information of underground utilities distribution accurately is provided, and is applicable to the detection of the underground utilities of the various materials and the depth of burying.
For realizing above-mentioned purpose, the present invention provides a kind of underground utilities chromatographic imaging system towards underground space development, comprises: the ground vibroseis, and it forms the elastic wave to underground propagation through releasing energy; Elastic wave wave detector array comprises and somely is separately positioned on ground or is embedded in underground elastic wave wave detector, gathers via the elastic wave reflex information after the underground utilities reflection; And multichannel seismic instrument, it is connected through cable with each elastic wave wave detector respectively, receives the elastic wave reflex information of being gathered by elastic wave wave detector array, and through forming the three-dimensional image information that underground utilities distribute after the data processing.
Said ground vibroseis is for providing many components high frequency vibroseis of different frequency.
Saidly being embedded in underground plurality of elastic ripple wave detector, is to be embedded in the hole of underground about 0.5 meter depths.
Said elastic wave wave detector is many components elastic wave wave detector, comprises multistage interconnective many components pick-up unit; Each said many components pick-up unit comprises geophone assembly and the air bag component that is arranged in the housing; Said air bag component comprises the air bag multilayer shrink sleeve outside with being wrapped in this air bag, and is connected through tracheae between the air bag of the air bag of each many components pick-up unit and adjacent many components pick-up unit.
Adopt the multi-channel signal acquiring line to be connected between said each elastic wave wave detector and the multichannel seismic instrument.
Said multichannel seismic instrument comprises data conversion module, data filtering module, microcontroller and the data disaply moudle that connects successively; Said data conversion module is an A/D converter, receives the elastic wave reflex signal that each elastic wave wave detector collects, and carries out analog to digital conversion and forms the elastic wave reflex digital signal, and the elastic wave reflex digital signal is carried out the data stack; Noise jamming in the said data filtering module filtering elastic wave reflex digital signal; Said microcontroller carries out data analysis and processing to filtered elastic wave reflex digital signal, calculates the three-dimensional information of underground utilities distributing position; Said data disaply moudle is a LCD, shows the three-dimensional image information of the underground utilities distributing position that is calculated by microcontroller.
Said data filtering module comprises the hi-line trap module that connects successively, low filtration module and the high filtration module that cuts cut.
Said multichannel seismic instrument also comprises data memory module, and it is connected with said microcontroller, the three-dimensional information data of the underground utilities that storage detection arrives.
Said multichannel seismic instrument also comprises long distance communication module, and it is connected with said microcontroller, transmits the three-dimensional information data of the underground utilities that detect to remote computer.
Said underground utilities chromatographic imaging system also comprises the GPS equipment that is connected with said multichannel seismic instrument, obtains the absolute three-dimensional information with respect to geographic coordinate of underground utilities.
Underground utilities chromatographic imaging system towards underground space development provided by the present invention, antijamming capability is strong, in detection process, can effectively shield various stronger electromagnetic interference (EMI) and noise in the city; The subsurface investigation degree of depth is wide; Can realize the accurate detection that the underground utilities in underground 0.5～40 meter scope distribute; Generate the high-resolution three-dimension image information that underground utilities distribute, and this underground utilities chromatographic imaging system is applicable to the detection of the underground utilities of the various materials and the depth of burying.
Description of drawings
Fig. 1 is the underground utilities chromatographic imaging system structured flowchart towards underground space development among the present invention;
Fig. 2 is the structured flowchart of the multichannel seismic instrument among the present invention.
Embodiment
Below in conjunction with Fig. 1～Fig. 2, specify a preferred embodiment of the present invention.
As shown in Figure 1, be the structured flowchart of the underground utilities chromatographic imaging system towards underground space development provided by the present invention.This underground utilities chromatographic imaging system comprises: ground vibroseis 1, and it forms the elastic wave to underground propagation through releasing energy; Elastic wave wave detector array 2 comprises and somely is separately positioned on ground or is embedded in underground elastic wave wave detector 21, gathers via the elastic wave reflex information after the underground utilities reflection; And multichannel seismic instrument 3, it is connected through cable with each elastic wave wave detector 21 respectively, receives the elastic wave reflex information of being gathered by elastic wave wave detector array 2, and through forming the three-dimensional image information that underground utilities distribute after the data processing.
Wherein, said ground vibroseis 1 adopts light many components high frequency vibroseis, and it is a kind of signal source that impulses that is used for engineering sounding and shallow seismic exploration imaging; Can the controlled vibroseis of various different frequencies be provided according to the on-the-spot different pavement conditions of practice of construction, to reach best stimulation effect; And can control simultaneously and produce a plurality of focus, promptly simultaneously to underground emission and propagate a plurality of elastic waves.
In the present embodiment; The sweep signal that said ground vibroseis 1 adopts is a Chirp signal (linear FM signal; Have sharp-pointed ambiguity function, existing certain resolution has higher tolerance limit again); This Chirp signal is through power amplification rear drive vibration exciter, and vibrator is through launch four elastic waves with the substrate of the fine and close coupling in ground to underground simultaneously subsequently.Elastic wave in the underground propagation process as run into underground utilities then can reflected back ground, make it diffuse information and received in the elastic wave wave detector array 2 near its elastic wave wave detector 21.
Being embedded in underground plurality of elastic ripple wave detector 21 in the said elastic wave wave detector array 2, is to be embedded in the hole of underground about 0.5 meter depths.
Each described elastic wave wave detector 21 all adopts many components elastic wave wave detector, comprises multistage interconnective many components pick-up unit.Comprise the geophone assembly and the air bag component that are arranged in the housing in each many components pick-up unit; Interconnect between the housing of said each many components pick-up unit.Said air bag component comprises the air bag multilayer shrink sleeve outside with being wrapped in this air bag; And be connected through tracheae between the air bag of the air bag of each many components pick-up unit and adjacent many components pick-up unit; After said many components elastic wave wave detector 21 is embedded in the underground opening; To the airbag aeration of each many components pick-up unit it is heaved through tracheae, thereby be close to the hole inwall and realize fixing.
Because many components elastic wave wave detector 21 that the present invention adopted comprises the geophone assembly of some unit; Therefore it can receive the elastic wave reflex information of the common reflection point of gathering several times; The elastic wave reflex information that this stack back receives has improved resolution and signal to noise ratio (S/N ratio) greatly, thereby can effectively improve the collecting efficiency and the acquisition quality of the underground elastic wave in city.Simultaneously; Since among the present invention at ground and underground many components elastic wave wave detector that all is provided with in a large number, thereby realize repeatedly covering repeatedly transmitting-receiving; Gather the underground elastic wave propagation information of magnanimity; And receive via the elastic wave information after the underground utilities reflection, and help the follow-up data analyzing and processing, and generate accurate underground utilities three-dimensional image information.
Adopt the multi-channel signal acquiring line to be connected between said each elastic wave wave detector 21 and the multichannel seismic instrument 3; Said multi-channel signal acquiring line connects the processing of employing shielding material, has good shock resistance and water resistance, can effectively shield the various electromagnetic interference (EMI) in the city and shake interference etc.
As shown in Figure 2, said multichannel seismic instrument 3 comprises data conversion module 31, data filtering module 32, microcontroller 33 and the data disaply moudle 34 that connects successively.
Said data conversion module 31 adopts high-precision A/D (modulus) converter; Receive the elastic wave reflex signal that each elastic wave wave detector collects; Carry out analog to digital conversion and form the elastic wave reflex digital signal; Simultaneously the elastic wave reflex digital signal is carried out the data stack, can effectively suppress random noise and disturb, improve Signal-to-Noise.In the present embodiment, the high-precision a/d converter that is adopted can carry out the data stack of 32 (bit).
All kinds of city noises that said data filtering module 32 is used for filtering elastic wave reflex digital signal disturb, and comprise the machine of mobile automobile, hi-line and vibration etc., thereby further improve signal quality and resolution.Said data filtering module 32 comprises the hi-line trap module 321 that connects successively: be used to eliminate electrical network power frequency interference signals and hi-line electromagnetic interference signal, promptly be used to eliminate the undesired signal of frequency at 50/60Hz and harmonic wave thereof; Hang down and cut filtration module 322: be used for the undesired signal that effective roll wave signal tyrannously and traffic at a distance bring; The high filtration module 323 that cuts: be used for effectively reducing wind and make an uproar.
It is the high-performance microcontroller of NIOS II that said microcontroller 33 adopts model; It carries out data analysis and processing to filtered elastic wave reflex digital signal; Principle is calculated in the ray tracing of utilization elastic wave, through complementary operation, calculates the three-dimensional information of underground utilities distributing position.
Said data disaply moudle 34 adopts high-resolution LCD, shows the three-dimensional image information of the underground utilities distributing position that is calculated by microcontroller 33.In the present embodiment, said data disaply moudle 34 adopt with common computer compatible, the LCD of visible high resolving power 640
480 under the daylight.
Said multichannel seismic instrument 3 also comprises data memory module 35, and it is connected with said microcontroller 33, is used to store the three-dimensional information data of the underground utilities that in former days, detect.
Said multichannel seismic instrument 3 also comprises long distance communication module 36, and it is connected with said microcontroller 33, can transmit the three-dimensional information data of the underground utilities that detect to long-range computing machine 5.In the present embodiment, said long distance communication module 36 adopts the RS485 serial line interface.
Said underground utilities chromatographic imaging system also comprises GPS (GPS) equipment 4 that is connected with said multichannel seismic instrument 3, thereby can obtain the absolute three-dimensional information with respect to geographic coordinate of underground utilities.
Underground utilities chromatographic imaging system towards underground space development provided by the present invention, antijamming capability is strong, in detection process, can effectively shield various stronger electromagnetic interference (EMI) and noise in the city; The subsurface investigation degree of depth is wide; Can realize the accurate detection that the underground utilities in underground 0.5～40 meter scope distribute; Generate the high-resolution three-dimension image information that underground utilities distribute, and this underground utilities chromatographic imaging system is applicable to the detection of the underground utilities of the various materials and the depth of burying.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (10)
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Cited By (6)
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| CN104181581A (en) * | 2014-08-26 | 2014-12-03 | 北京市市政工程研究院 | Earthquake wave underground construction space observation system and method based on random arrangement |
| CN107703538A (en) * | 2017-09-14 | 2018-02-16 | 上海交通大学 | Underground unfavorable geology survey data acquisition analysis system and method |
| CN108646243A (en) * | 2018-07-13 | 2018-10-12 | 王彩云 | A kind of computed tomography scanning imager based on the orderly cloud signal of finite state machine |
| CN109061744A (en) * | 2018-07-13 | 2018-12-21 | 郭伟 | A kind of computed tomography scanning imager |
| CN109188504A (en) * | 2018-08-08 | 2019-01-11 | 武汉市工程科学技术研究院 | A kind of underground pipe gallery detection method |
| CN112379404A (en) * | 2020-10-20 | 2021-02-19 | 中科巨匠人工智能技术(广州)有限公司 | Active and passive mixed urban earthquake detection and monitoring system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104181581A (en) * | 2014-08-26 | 2014-12-03 | 北京市市政工程研究院 | Earthquake wave underground construction space observation system and method based on random arrangement |
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| CN107703538A (en) * | 2017-09-14 | 2018-02-16 | 上海交通大学 | Underground unfavorable geology survey data acquisition analysis system and method |
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| CN109061744A (en) * | 2018-07-13 | 2018-12-21 | 郭伟 | A kind of computed tomography scanning imager |
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| CN109188504A (en) * | 2018-08-08 | 2019-01-11 | 武汉市工程科学技术研究院 | A kind of underground pipe gallery detection method |
| CN109188504B (en) * | 2018-08-08 | 2020-04-17 | 武汉市工程科学技术研究院 | Underground pipe gallery detection method |
| CN112379404A (en) * | 2020-10-20 | 2021-02-19 | 中科巨匠人工智能技术(广州)有限公司 | Active and passive mixed urban earthquake detection and monitoring system |
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