CN104459807A - One-sending and multi-receiving radio wave tunnel penetration field strength measuring system and method between double roadways - Google Patents
One-sending and multi-receiving radio wave tunnel penetration field strength measuring system and method between double roadways Download PDFInfo
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Abstract
The invention relates to a one-sending and multi-receiving radio wave tunnel penetration field strength measuring system and method between double roadways. The system comprises a sending system and a multi-channel receiving system. The position of a sending point of the sending system is changed by fixing a receiving measuring point where the multi-channel receiving system is located into one observation station, the penetration field strength values obtained when electromagnetic waves sent by the sending system and received by receiving systems in observation stations pass through working media between the double roadways are collected, the multi-channel receiving system is moved to form the multiple observation stations, and high-precision transmission electromagnetic wave data bodies are formed among the observation stations; field strength and absorption coefficient distribution diagrams of coal rock stratus between the double roadways are obtained through electromagnetic wave transmission imaging, the disclosed geological conditions are used for carrying out the fine explanation on the face interior structure and the abnormality of the face interior structure, and reliable technical parameters are provided for safe recovery of a working face.
Description
Technical field
The invention belongs to mine exploration engineering field, be specifically related to multicast radiowave between mine two lane and cheat field strength measurement System and method for.
Background technology
The geologic agent of the safe and efficient production of many impacts is there is in mine working face exploitation process, mainly comprise the extension situation that tunnel discloses tomography, squeeze district, and the developmental condition such as potential fault, karst collapse col umn in face, comprehensive mechanical coal mining degree more in high request opposite structure to detect degree meticulousr.At present, the method for effectively detecting fully-mechanized mining working internal structure is the most general with Radio Penetration method, and its execute-in-place is simple, and resolution characteristic is strong, is therefore widely used at underground coal mine.But data acquisition is only debit's formula in existing Radio Penetration device, on-the-spot by fixed transmission point, conversion acceptance point, form the fan data area of observation coverage, its work on the spot amount is large, data cover face is little, and imaging precision is low, is unfavorable for that radiowave cheats Technique Popularizing and application.
summary of the invention:
The defect that pin Underground Electromagnetic Wave Perradiator device equipment of the present invention and operating technology method exist, utilize the condition in workplace Shi Shuan lane, improve radiowave and cheat technology, multiple acceptance point is arranged in a tunnel, mobile launching site in another tunnel, form a set of multicast transmission measurement system, the saturating field intensity in the hole between two lane is measured, form wide region, high density scans perspective electromagnetic wave data volume.By transmission tomography between two lane, obtain field intensity and the absorption coefficient distribution plan of coal rock layer in workplace, disclose in geologic condition opposite in conjunction with tunnel and construct and extremely carry out explication de texte, further raising field survey efficiency and tomography effect, for workplace safety coal extraction provides technical support.
The technical scheme that the present invention adopts is as follows:
Between two lane, multicast radiowave cheats field strength measurement system, comprise emission coefficient and hyperchannel receiving system, described emission coefficient comprises the emitting antenna wire frame launched main frame and be connected with transmitting host cable, multiple receiving antenna wire frames that described hyperchannel receiving system comprises multi channel signals registering instrument and is connected with receiver multi channel signals registering instrument cable, the digital signal of 1-16 channel emission frequency can be received, it is characterized in that: described emission coefficient is positioned at a tunnel, described hyperchannel launches system bits in another tunnel, described multiple receiving antenna wire frame is distributed in successively in tunnel, place and forms a reception observation section, be connected successively by cable and be connected to the observation that multi channel signals registering instrument realizes this reception observation section in tunnel, place, described hyperchannel receiving system moves successively in tunnel, realize the observation in whole tunnel, described hyperchannel receiving system often moves once, determine a reception observation section, a transmitter section is had in corresponding tunnel, emission coefficient place, launching site at regular intervals is established in described transmitter section, described emission coefficient is in emitting electromagnetic wave on launching site successively, described hyperchannel receiving system is received by multiple receiving antenna and realizes multicast formula detection in this observation receiving end through the electromagnetic wave of workplace between two tunnels, treat that the observation of whole tunnel is complete, mutual replacing emission coefficient and the tunnel at hyperchannel receiving system, repeat above process, realize mutually observing between two tunnel.
Described transmitting main frame transmission frequency comprises 0.158MHz, 0.365 MHz and 0.965MHz, and described emitting antenna wire frame is rectangle, and its plane normal direction and tunnel, place move towards consistent; Described receiving antenna coil is rounded, and plane normal direction and tunnel, place move towards consistent.
The distribute spacing of described receiving antenna coil in tunnel is that 5-10m forms reception observation section, and in the transmitter section of this reception observation section correspondence, launching site is arranged by spacing 5-30m; Overlap or keep at a certain distance away between the adjacent reception observation section first and last determined when described hyperchannel receiving system moves successively in tunnel.
Between a kind of two lane, multicast radiowave cheats field strength measurement method, it is characterized in that, comprises the following steps:
(1), select a tunnel to do and launch tunnel, emission coefficient is arranged at emitting electromagnetic wave in this tunnel, select another tunnel to do and receive tunnel, hyperchannel receiving system to be placed in this tunnel multipoint reception electromagnetic wave through value, the on-the-spot receiving cable number selecting multi channel signals registering instrument according to tunnel condition, and 5-10m point is pressed apart from laying acceptance point in reception tunnel, receiving antenna is fixed on acceptance point position;
(2), in setting launching site position, transmitting tunnel, transmitting wire frame is placed on launching site, and transmission frequency, transmitting duration parameters are set;
(3), at transmitter be often in described hyperchannel receiving system in the transmitting duration on a launching site and gather 3 groups of data respectively, after being averaged as received electromagnetic wave through field intensity value, and to store;
(4), described hyperchannel receiving system position is motionless, emission coefficient moves to next launching site, carry out signal transmitting, hyperchannel receiving system is carried out a new round and is received through field intensity and store in transmitter transmitting duration, repetition like this terminates to transmitter section tail point, the spacing of transmitter section length and launching site is arranged according to the spacing of tunnel condition and acceptance point and position, and wherein the spacing of launching site is set to 5-30m;
(5), mobile hyperchannel receiving system to next round receives observation section, and described next round receives the head end of observation station and the end of last round of reception observation station can overlap or keep at a certain distance away, and is convenient to the alternate covering of data acquisition;
(6), carry out next round electromagnetic radiation to circulate with reception;
(7) after, transmitting tunnel and reception tunnel data acquisition session complete, change emission coefficient and hyperchannel receiving system place roadway position realization transmitting tunnel and receive tunnel exchange function, former transmitting tunnel becomes reception tunnel, former reception tunnel becomes launches tunnel, repeat electromagnetic radiation and reception, until complete the data acquisition session of whole workplace;
(8), adopt chromatography imaging method to process image data, obtain the field intensity of coal rock layer between workplace two lane and absorption coefficient distribution plan and make an explanation.
The process that described employing chromatography imaging method processes image data is as follows:
(1) cheat data volume to total space radiowave to arrange; (2) build inverse model between two lane, carry out grid cell division; (3) Electromgnetically-transparent ray tracing, realizes field intensity and absorption coefficient inversion, obtains coal rock layer dielectric field intensity and absorption coefficient distribution plan between two lane; (4) disclose coal rock layer feature in conjunction with tunnelling, establish field intensity exception and the abnormal criterion of absorption coefficient, abnormal and carry out Fine structural interpretation in extraction face.
Beneficial effect of the present invention is embodied in:
1, multicast recording geometry, its data acquisition is arranged sensitive, can effectively improve on-site data gathering efficiency, strengthen the consistance of data acquisition between different acceptance point.
2, during on-site data gathering, the alternate covering that can realize between data collection point according to exploration requirement, increases the data volume of actual measurement, improves the degree of convergence of data inversion, and the accuracy rate of geologic interpretation.
accompanying drawing illustrates:
Fig. 1 is schematic diagram of the present invention;
Fig. 2 (a) is emission coefficient structural representation of the present invention;
Fig. 2 (b) is receiving system structural representation of the present invention;
Tu3Wei Shuan lane Radio Penetration is launched and scanning receives recording geometry schematic diagram.
Embodiment
As shown in Figure 1 to Figure 3, between two lane, multicast radiowave cheats field strength measurement system, comprise emission coefficient and hyperchannel receiving system, described emission coefficient comprises the emitting antenna wire frame launched main frame and be connected with transmitting host cable, multiple receiving antenna wire frames that described hyperchannel receiving system comprises multi channel signals registering instrument and is connected with receiver multi channel signals registering instrument cable, the digital signal of 1-16 channel emission frequency can be received, described emission coefficient is positioned at a tunnel, described hyperchannel launches system bits in another tunnel, described multiple receiving antenna wire frame is distributed in successively in tunnel, place and forms a reception observation section, be connected successively by cable and be connected to the observation that multi channel signals registering instrument realizes this reception observation section in tunnel, place, described hyperchannel receiving system moves successively in tunnel, realize the observation in whole tunnel, described hyperchannel receiving system often moves once, determine a reception observation section, a transmitter section is had in corresponding tunnel, emission coefficient place, launching site at regular intervals is established in described transmitter section, described emission coefficient is in emitting electromagnetic wave on launching site successively, described hyperchannel receiving system is received by multiple receiving antenna and realizes multicast formula detection in this observation receiving end through the electromagnetic wave of workplace between two tunnels, treat that the observation of whole tunnel is complete, mutual replacing emission coefficient and the tunnel at hyperchannel receiving system, repeat above process, realize mutually observing between two tunnel.
Described transmitting main frame transmission frequency comprises 0.158MHz, 0.365 MHz and 0.965MHz, and described emitting antenna wire frame is rectangle, and its plane normal direction and tunnel, place move towards consistent; Described receiving antenna coil is rounded, and plane normal direction and tunnel, place move towards consistent.
The distribute spacing of described receiving antenna coil in tunnel is that 5-10m forms reception observation section, and in the transmitter section of this reception observation section correspondence, launching site is arranged by spacing 5-30m; Overlap or keep at a certain distance away between the adjacent reception observation section first and last determined when described hyperchannel receiving system moves successively in tunnel.
Between a kind of two lane, multicast radiowave cheats field strength measurement method, comprises the following steps:
(1), select a tunnel to do and launch tunnel, emission coefficient is arranged at emitting electromagnetic wave in this tunnel, select another tunnel to do and receive tunnel, hyperchannel receiving system to be placed in this tunnel multipoint reception electromagnetic wave through value, the on-the-spot receiving cable number selecting multi channel signals registering instrument according to tunnel condition, and 5-10m point is pressed apart from laying acceptance point in reception tunnel, receiving antenna is fixed on acceptance point position;
(2), in setting launching site position, transmitting tunnel, transmitting wire frame is placed on launching site, and transmission frequency, transmitting duration parameters are set;
(3), at transmitter be often in described hyperchannel receiving system in the transmitting duration on a launching site and gather 3 groups of data respectively, after being averaged as received electromagnetic wave through field intensity value, and to store;
(4), described hyperchannel receiving system position is motionless, emission coefficient moves to next launching site, carry out signal transmitting, hyperchannel receiving system is carried out a new round and is received through field intensity and store in transmitter transmitting duration, repetition like this terminates to transmitter section tail point, the spacing of transmitter section length and launching site is arranged according to the spacing of tunnel condition and acceptance point and position, and wherein the spacing of launching site is set to 5-30m;
(5), mobile hyperchannel receiving system to next round receives observation section, and described next round receives the head end of observation station and the end of last round of reception observation station can overlap or keep at a certain distance away, and is convenient to the alternate covering of data acquisition;
(6), carry out next round electromagnetic radiation to circulate with reception;
(7) after, transmitting tunnel and reception tunnel data acquisition session complete, change emission coefficient and hyperchannel receiving system place roadway position realization transmitting tunnel and receive tunnel exchange function, former transmitting tunnel becomes reception tunnel, former reception tunnel becomes launches tunnel, repeat electromagnetic radiation and reception, until complete the data acquisition session of whole workplace;
(8), adopt chromatography imaging method to process image data, obtain the field intensity of coal rock layer between workplace two lane and absorption coefficient distribution plan and make an explanation.
The process that described employing chromatography imaging method processes image data is as follows:
(1) cheat data volume to total space radiowave to arrange; (2) build inverse model between two lane, carry out grid cell division; (3) Electromgnetically-transparent ray tracing, realizes field intensity and absorption coefficient inversion, obtains coal rock layer dielectric field intensity and absorption coefficient distribution plan between two lane; (4) disclose coal rock layer feature in conjunction with tunnelling, establish field intensity exception and the abnormal criterion of absorption coefficient, abnormal and carry out Fine structural interpretation in extraction face.
Claims (5)
1. between pair lane, multicast radiowave cheats field strength measurement system, comprise emission coefficient and hyperchannel receiving system, described emission coefficient comprises the emitting antenna wire frame launched main frame and be connected with transmitting host cable, multiple receiving antenna wire frames that described hyperchannel receiving system comprises multi channel signals registering instrument and is connected with receiver multi channel signals registering instrument cable, the digital signal of 1-16 channel emission frequency can be received, it is characterized in that: described emission coefficient is positioned at a tunnel, described hyperchannel launches system bits in another tunnel, described multiple receiving antenna wire frame is distributed in successively in tunnel, place and forms a reception observation section, be connected successively by cable and be connected to the observation that multi channel signals registering instrument realizes this reception observation section in tunnel, place, described hyperchannel receiving system moves successively in tunnel, realize the observation in whole tunnel, described hyperchannel receiving system often moves once, determine a reception observation section, a transmitter section is had in corresponding tunnel, emission coefficient place, launching site at regular intervals is established in described transmitter section, described emission coefficient is in emitting electromagnetic wave on launching site successively, described hyperchannel receiving system is received by multiple receiving antenna and realizes multicast formula detection in this observation receiving end through the electromagnetic wave of workplace between two tunnels, treat that the observation of whole tunnel is complete, mutual replacing emission coefficient and the tunnel at hyperchannel receiving system, repeat above process, realize mutually observing between two tunnel.
2. between according to claim 1 pair of lane, multicast radiowave cheats field strength measurement system, it is characterized in that: described transmitting main frame transmission frequency comprises 0.158MHz, 0.365 MHz and 0.965MHz, described emitting antenna wire frame is rectangle, and its plane normal direction and tunnel, place move towards consistent; Described receiving antenna coil is rounded, and plane normal direction and tunnel, place move towards consistent.
3. between according to claim 1 pair of lane, multicast radiowave cheats field strength measurement system, it is characterized in that: the distribute spacing of described receiving antenna coil in tunnel is that 5-10m forms reception observation section, and in the transmitter section of this reception observation section correspondence, launching site is arranged by spacing 5-30m; Overlap or keep at a certain distance away between the adjacent reception observation section first and last determined when described hyperchannel receiving system moves successively in tunnel.
4. between a Zhong Shuan lane, multicast radiowave cheats field strength measurement method, it is characterized in that, comprises the following steps:
(1), select a tunnel to do and launch tunnel, emission coefficient is arranged at emitting electromagnetic wave in this tunnel, select another tunnel to do and receive tunnel, hyperchannel receiving system to be placed in this tunnel multipoint reception electromagnetic wave through value, the on-the-spot receiving cable number selecting multi channel signals registering instrument according to tunnel condition, and 5-10m point is pressed apart from laying acceptance point in reception tunnel, receiving antenna is fixed on acceptance point position;
(2), in setting launching site position, transmitting tunnel, transmitting wire frame is placed on launching site, and transmission frequency, transmitting duration parameters are set;
(3), at transmitter be often in described hyperchannel receiving system in the transmitting duration on a launching site and gather 3 groups of data respectively, after being averaged as received electromagnetic wave through field intensity value, and to store;
(4), described hyperchannel receiving system position is motionless, emission coefficient moves to next launching site, carry out signal transmitting, hyperchannel receiving system is carried out a new round and is received through field intensity and store in transmitter transmitting duration, repetition like this terminates to transmitter section tail point, the spacing of transmitter section length and launching site is arranged according to the spacing of tunnel condition and acceptance point and position, and wherein the spacing of launching site is set to 5-30m;
(5), mobile hyperchannel receiving system to next round receives observation section, and described next round receives the head end of observation station and the end of last round of reception observation station can overlap or keep at a certain distance away, and is convenient to the alternate covering of data acquisition;
(6), carry out next round electromagnetic radiation to circulate with reception;
(7) after, transmitting tunnel and reception tunnel data acquisition session complete, change emission coefficient and hyperchannel receiving system place roadway position realization transmitting tunnel and receive tunnel exchange function, former transmitting tunnel becomes reception tunnel, former reception tunnel becomes launches tunnel, repeat electromagnetic radiation and reception, until complete the data acquisition session of whole workplace;
(8), adopt chromatography imaging method to process image data, obtain the field intensity of coal rock layer between workplace two lane and absorption coefficient distribution plan and make an explanation.
5. between one according to claim 4 two lane, multicast radiowave cheats field strength measurement method, it is characterized in that: process that is described, that adopt chromatography imaging method to process image data is as follows:
(1) cheat data volume to total space radiowave to arrange; (2) build inverse model between two lane, carry out grid cell division; (3) Electromgnetically-transparent ray tracing, realizes field intensity and absorption coefficient inversion, obtains coal rock layer dielectric field intensity and absorption coefficient distribution plan between two lane; (4) disclose coal rock layer feature in conjunction with tunnelling, establish field intensity exception and the abnormal criterion of absorption coefficient, abnormal and carry out Fine structural interpretation in extraction face.
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Cited By (7)
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| CN107085243A (en) * | 2017-05-18 | 2017-08-22 | 淮南矿业(集团)有限责任公司 | A kind of assay method and drawing formation system of filling-in field strength |
| CN107783180A (en) * | 2016-08-30 | 2018-03-09 | 福州华虹智能科技股份有限公司 | A kind of tunnel back wave earthquake forward probe method |
| CN107884836A (en) * | 2017-11-09 | 2018-04-06 | 淮南矿业(集团)有限责任公司 | Absorption coefficient β computational methods in a kind of radio wave penetration method |
| CN110568510A (en) * | 2019-10-08 | 2019-12-13 | 福州华虹智能科技股份有限公司 | Mining full-length in-situ radio wave perspective instrument |
| CN110954961A (en) * | 2019-11-22 | 2020-04-03 | 山西晋煤集团技术研究院有限责任公司 | Large-sector mine working face radio wave penetration system and method |
| CN111830582A (en) * | 2020-07-07 | 2020-10-27 | 中国矿业大学 | Average value constraint-based chromatographic inversion method |
| CN112241026A (en) * | 2019-07-19 | 2021-01-19 | 福州华虹智能科技股份有限公司 | Same-field electromagnetic observation method based on full mining face |
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| CN112241026B (en) * | 2019-07-19 | 2023-05-26 | 福州华虹智能科技股份有限公司 | Full mining surface-based same-field electromagnetic observation method |
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| CN111830582A (en) * | 2020-07-07 | 2020-10-27 | 中国矿业大学 | Average value constraint-based chromatographic inversion method |
| CN111830582B (en) * | 2020-07-07 | 2021-12-24 | 中国矿业大学 | Average value constraint-based chromatographic inversion method |
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