CN203275668U - Roadway transient electromagnetic focusing advanced detection device - Google Patents
Roadway transient electromagnetic focusing advanced detection device Download PDFInfo
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- CN203275668U CN203275668U CN2013201078875U CN201320107887U CN203275668U CN 203275668 U CN203275668 U CN 203275668U CN 2013201078875 U CN2013201078875 U CN 2013201078875U CN 201320107887 U CN201320107887 U CN 201320107887U CN 203275668 U CN203275668 U CN 203275668U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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Abstract
The utility model discloses a roadway transient electromagnetic focusing advanced detection device, which comprises a transmitting line frame and two receiving line frames, wherein the transmitting line frame is a square line frame whose 9-turn sides are wound by a cable and 2.0m in length, the two receiving line frames is square line frames whose 18-turn sides are wound by a cable and 0.5m in length, two ends of the cable winding the transmitting line frame are connected to a transmission port of a transient electromagnetic host, cable ends of the two receiving line frames are connected to two receiving channels of the transient electromagnetic host, and the transient electromagnetic host is connected with a data processing platform. The roadway transient electromagnetic focusing advanced detection device constructs a transient electromagnetic focusing advanced detection device system by utilizing one transmitting line frame and multiple receiving line frames, carries out exploration on containing water abnormity of a front coal and rock layer in a roadway, acquires an electrical parameter section of the front coal and rock layer, and carries out geological interpretation and prediction, thereby providing effective technical parameters for coal and rock roadway tunneling security.
Description
Technical field
The utility model relates generally to a kind of Roadway Leading Prospecting method and technology field, relates in particular to a kind of tunnel transient electromagnetic and focuses on the forward probe device.
Background technology
There is the geological problem of many impact safety in production in tunnelling the place ahead, moisture extremely larger to Influence of production in coal rock layer wherein, therefore need to carry out forward probe in the tunnelling work progress, exist the position of geological problem and feature to forecast to the place ahead.The electrical property feature that utilizes at present transient electromagnetic method can obtain the place ahead coal and rock distributes, and extremely judges the rich water characteristic of coal rock layer according to the resistivity low value, forecasts corresponding position relationship, instructs the roadway construction technical safety measures to formulate.At present, existing transient electromagnetic forward probe method adopts one one little wire frame of receiving overlapping loop line of multiturn to carry out emission and the reception of transient electromagnetic field, and it is relatively less that its point is surveyed the data message amount, and signal is subjected to the interference of the self-induction of wire frame own and mutual inductance larger.
The utility model content
The utility model purpose is exactly in order to make up the defective of prior art, provide a kind of tunnel transient electromagnetic to focus on the forward probe device, by the improvement to testing tool equipment and wire frame, increase data acquisition channel and data volume, reduce the interference between wire frame, raising is to front geological abnormal test and judgement, but value is high.
The utility model is achieved through the following technical solutions:
A kind of tunnel transient electromagnetic focuses on the forward probe device, include emission wire frame and two reception wire frames, described emission wire frame is the square wire frame of the 7-9 circle 2.0m length of side that turns to cable, described two receive the square wire frame that wire frames are 16-18 circle 0.5m length of sides of turning to cable, and described two receive wire frame central authorities at the emission wire frame placed side by side; Described emission wire frame and reception wire frame surrounding all support with the hard rod member, perhaps each wire frame cable separately are embedded on soft panel slot; Also include transient electromagnetic main frame and data processing platform (DPP), wherein two the end of a thread of coiling emission wire frame cable access the emission port of transient electromagnetic main frame jointly, two two receiving cables that receive the end of a thread access transient electromagnetic main frame of wire frame, the transient electromagnetic main frame is connected with data processing platform (DPP).
During data acquisition, main frame take a cover emission coefficient and two cover reception systems as main, is completed transient electromagnetic field excitation and reception to each single measurement point.Emission coefficient emission bipolarity rect.p. wherein, transmission frequency comprise 2.5,6.25,12.5,25,62.5Hz; Register system whole process records the positive negative peak size of supply current and off-position current value, and secondary vortices flow field value in receiving coil.During Roadway Leading Prospecting, press the 0.2-0.5m moving step pitch according to field condition and change the measurement point position, realize roadway head is organized the collection of the leading data of transient electromagnetic more.
Decide source data and process focusing in conjunction with overlapping loop line apparent resistivity in late period empirical formula, and carry out depth correction in conjunction with tunnelling coal rock layer geologic condition, obtain corresponding depth measurement resistivity profile.Form the electrical generalized section in the place ahead, tunnel and express according to the multiple spot computation of apparent resistivity result of test section, further improving the judgement precision to the place ahead coal rock layer watery.
In conjunction with the resistivity profile feature of the electrical condition of digging laneway coal rock layer and acquisition, analyze judgement to surveying tunnel front geological condition.Usually determine the low value exceptions area according to average resistivity value size in section, can be low resistance abnormity area lower than the average resistivity value more than 3 times, in conjunction with the detection of a target, the low resistance abnormal area is judged, explains out-of-the way position, and according to exceptional value difference size sxemiquantitative ground evaluation coal rock layer degree of water-rich and off-note.
The utility model is to utilize the transient electromagnetic method the moisture anomalous body in the place ahead, tunnel to be carried out a kind of technological system of forward probe.By the improvement to an Acceptance Tests apparatus system in the existing transient electromagnetic detecting in down-hole, forms two signals of receiving and transmit and receive focalizer system, collection quantity and the analysis precision of the single measuring point data of raising.Obtain the place ahead, tunnel electric resistance rate of coal petrology distribution characteristics by the leading imaging of transient electromagnetic method, further according to resistivity low value anomaly evaluation coal rock layer water signature, forecast the place ahead out-of-the way position and feature.
The utility model has the advantages that:
1, overlapping loop line is improved to transmit and receive separation decide the source type of focusing, a two-wire frame receives, and improves the one point data collection capacity, the continuous moving image data of meeting head in the tunnel can form the multi-measuring point section, improves the exploration resolution characteristic to the place ahead objective body.
2, two take-up frames are embedded in the soft working panel of canvas type, are convenient to carry out the tunnel adherent operation of workplace of meeting head on, and reduce the signal attenuation or the interference that produce between Air Coupling and cable.
3, improving main frame is that two passages receive, and when emission bipolarity rect.p., whole process records secondary vortices flow field in supply current and receiving coil, is convenient to the analysis of late time data processing and objective body.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that embedded wire frame is arranged schematic diagram.
Embodiment
As shown in Figure 1, a kind of tunnel transient electromagnetic focuses on the forward probe device, include emission wire frame 1 and two reception wire frames 2,3, described emission wire frame 1 is the square wire frame of the 9 circle 2.0m length of sides that turn to cable, described two receive wire frames 2, the 3rd, the square wire frame of the 18 circle 0.5m length of sides that turn to cable, and described two receive wire frames 2,3 central authorities at emission wire frame 1 placed side by side; Described emission wire frame 1 and reception wire frame 2,3 surroundings all support with the hard rod member, perhaps each wire frame cable separately are embedded on soft panel slot; Also include transient electromagnetic main frame 4 and data processing platform (DPP) 5, wherein two the end of a thread of coiling emission wire frame 1 cable access the emission port of transient electromagnetic main frame 4 jointly, two two receiving cables that receive wire frame 2, the end of a thread access transient electromagnetic main frame 4 of 3, transient electromagnetic main frame 4 is connected with data processing platform (DPP) 5.
With the sending and receiving loophole of emission wire frame 1 and after receiving wire frame 2,3 receiving cable termination and entering transient electromagnetic main frame 4, arrange measurement point according to the tunnel face condition of meeting head on, lay wire frame, host parameter is set, carry out the one point data collection.Move measuring point at the roadway head section by the 0.2-0.5m step pitch according to measuring accuracy, further complete the leading DATA REASONING of multiple spot transient electromagnetic of whole section.Complete at last the data processing of whole section according to the focusing power supply method for computing data, form investigative range electric resistance rate of coal petrology section and also carry out low-resistance interpretation of anomaly and judgement.
Claims (1)
1. a tunnel transient electromagnetic focuses on the forward probe device, it is characterized in that: include emission wire frame and two reception wire frames, described emission wire frame is the square wire frame of the 7-9 circle 2.0m length of side that turns to cable, described two receive the square wire frame that wire frames are 16-18 circle 0.5m length of sides of turning to cable, and described two receive wire frame central authorities at the emission wire frame placed side by side; Described emission wire frame and reception wire frame surrounding all support with the hard rod member, perhaps each wire frame cable separately are embedded on soft panel slot; Also include transient electromagnetic main frame and data processing platform (DPP), wherein two the end of a thread of coiling emission wire frame cable access the emission port of transient electromagnetic main frame jointly, two two receiving cables that receive the end of a thread access transient electromagnetic main frame of wire frame, the transient electromagnetic main frame is connected with data processing platform (DPP).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201078875U CN203275668U (en) | 2013-03-11 | 2013-03-11 | Roadway transient electromagnetic focusing advanced detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201078875U CN203275668U (en) | 2013-03-11 | 2013-03-11 | Roadway transient electromagnetic focusing advanced detection device |
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| Publication Number | Publication Date |
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| CN203275668U true CN203275668U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201078875U Expired - Fee Related CN203275668U (en) | 2013-03-11 | 2013-03-11 | Roadway transient electromagnetic focusing advanced detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105824047A (en) * | 2015-01-07 | 2016-08-03 | 淮南矿业(集团)有限责任公司 | Transient electromagnetic advanced detection monitoring device and method |
| CN106054260A (en) * | 2016-05-18 | 2016-10-26 | 吉林大学 | Real-time tunnel advanced forecasting method by means of parallel pilot tunnel |
| CN107272074A (en) * | 2017-05-16 | 2017-10-20 | 中国矿业大学(北京) | A kind of apparatus and method for realizing Mine transient electromagnetic focusing-detection |
-
2013
- 2013-03-11 CN CN2013201078875U patent/CN203275668U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105824047A (en) * | 2015-01-07 | 2016-08-03 | 淮南矿业(集团)有限责任公司 | Transient electromagnetic advanced detection monitoring device and method |
| CN106054260A (en) * | 2016-05-18 | 2016-10-26 | 吉林大学 | Real-time tunnel advanced forecasting method by means of parallel pilot tunnel |
| CN107272074A (en) * | 2017-05-16 | 2017-10-20 | 中国矿业大学(北京) | A kind of apparatus and method for realizing Mine transient electromagnetic focusing-detection |
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| Date | Code | Title | Description |
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| 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: 20131106 Termination date: 20140311 |