CN203606514U - Gallery penetration acquisition system - Google Patents
Gallery penetration acquisition system Download PDFInfo
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- CN203606514U CN203606514U CN201320833819.7U CN201320833819U CN203606514U CN 203606514 U CN203606514 U CN 203606514U CN 201320833819 U CN201320833819 U CN 201320833819U CN 203606514 U CN203606514 U CN 203606514U
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- 230000035515 penetration Effects 0.000 title abstract 4
- 238000000034 method Methods 0.000 claims description 24
- 238000009738 saturating Methods 0.000 claims description 15
- 239000003245 coal Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The utility model provides a gallery penetration acquisition system. The gallery penetration acquisition system is characterized in that at least one first emitter is arranged in a wind road, and at least one first receiver is arranged in a machine road; at least one second emitter is arranged in the machine road, and at least one second receiver is arranged in the wind road; the first emitter and the second emitter are used for alternatively emitting electromagnetic waves; the first receiver is used for receiving field intensity H signals generated by the electromagnetic waves emitted by the first emitter; and the second receiver is used for receiving field intensity H signals generated by the electromagnetic waves emitted by the second emitter. And therefore, the gallery penetration acquisition system solves the problems that the efficiency of underground wireless electromagnetic wave data acquisition is low, the workload of the personnel is heavy, and the on-site working time is long.
Description
Technical field
The utility model embodiment relates to a kind of acquisition system, relates in particular to the saturating acquisition system in a kind of hole.
Background technology
Working face of coal seam back production requires there is a understanding roughly to affecting the geology development condition of safe and efficient production; For meeting safety in production requirement, introduced physical prospecting field, down-hole the radio magnetic wave perspective technology with high-efficiency high-precision.Wherein, tunnel radio wave pentration method, claims again hole saturating method.The various radio magnetic wave perspectives that research coal seam, exploiting field, various structure and geologic body cause electromagnetic impact are abnormal, thereby carry out geology deduction and explanation, the ultimate principle of the saturating method in hole that Here it is.
Radio magnetic wave perspective technology is in the time of the detection application of colliery at present, and its data acquisition adopts fix point method, and a transmitter is launched in a tunnel, and receiver receives data, i.e. a receipts pattern at the corresponding acceptance point in another tunnel.
But a receipts pattern can cause the problems such as personnel's labor capacity is large, and the work on the spot time is long, and data acquisition efficiency is low.
Utility model content
The utility model provides a kind of hole saturating acquisition system, and low in order to solve in prior art downhole wireless electromagnetic wave data acquisition efficiency, personnel's labor capacity is large, the problem that the work on the spot time is long.
On the one hand, the utility model provides a kind of hole saturating acquisition system, at least one first transmitter is wherein set in air way, at least one first receiver is set in Ji lane, at least one second transmitter is set in Ji lane, and at least one second receiver is set in air way, the first transmitter and the second transmitter are for alternate emission electromagnetic wave, the field intensity H signal that the first receiver produces for receiving the electromagnetic wave of the first transmitter transmitting, the field intensity H signal that the second receiver produces for receiving the electromagnetic wave of the second transmitter transmitting.
In an embodiment of the present utility model, first transmitter is set in air way, multiple the first receivers are set in machine lane.The first transmitter, for moving to successively multiple first launching site of air way, and at each the first launching site emitting electromagnetic wave; Each the first receiver, with the corresponding setting of at least one the first launching site, at described the first transmitter during at corresponding the first launching site emitting electromagnetic wave, receives the field intensity H signal that the electromagnetic wave of the first transmitter transmitting produces.
Further, the second transmitter is for moving to successively multiple second launching site in machine lane, and send electromagnetic wave at each the second launching site, each the second receiver and the corresponding setting of at least one the second launching site, for at the second transmitter during at corresponding the second launching site emitting electromagnetic wave, receive the field intensity H signal that the electromagnetic wave of the second transmitter transmitting produces.Wherein, the first transmitter, at a first launching site emitting electromagnetic wave, hockets at a second launching site emitting electromagnetic wave with the second transmitter.
In an embodiment of the present utility model, the process that the first transmitter moves to another first launching site from first launching site, the second transmitter is at a second launching site emitting electromagnetic wave, and the process that moves to another second launching site from second launching site of the second transmitter the first transmitter at a first launching site emitting electromagnetic wave.
On the other hand, in an embodiment of the present utility model, anti-saturating acquisition system also comprises control module, being used for controlling the first transmitter moves, and control the process that the second transmitter moves to another first launching site from first launching site at the first transmitter, at a second launching site emitting electromagnetic wave; And control the second transmitter and move, and control the process that the first transmitter moves to another second launching site from second launching site at the second transmitter, at a first launching site emitting electromagnetic wave.Control module also receives the field intensity H signal that the electromagnetic wave of the first transmitter transmitting produces for controlling the first receiver, and controls the field intensity H signal that electromagnetic wave that the second receiver receives the second transmitter transmitting produces.
In an embodiment of the present utility model, the range of receiving of the first receiver is no more than 45 degree take the first launching site of correspondence as the fan-shaped angle on summit, and the range of receiving of the second receiver is no more than 45 degree take the second launching site of correspondence as the fan-shaped angle on summit.
The utility model provides a kind of hole saturating acquisition system, comprise: at least one first transmitter is set in air way, at least one first receiver is set in Ji lane, and at least one second transmitter is set in Ji lane, at least one second receiver is set in air way, the first transmitter and the second transmitter are for alternate emission electromagnetic wave simultaneously, the field intensity H signal that the first receiver produces for receiving the electromagnetic wave of the first transmitter transmitting, the field intensity H signal that the second receiver produces for receiving the electromagnetic wave of the second transmitter transmitting.In order to improve downhole wireless electromagnetic wave data acquisition efficiency, reduce personnel's workload and working time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the saturating acquisition system in hole of the utility model embodiment mono-;
Fig. 2 A is the first transmitter and the first receiver transmitting reception schematic diagram that the utility model embodiment bis-cheats acquisition system;
Fig. 2 B is the second transmitter and the second receiver transmitting reception schematic diagram that the utility model embodiment bis-cheats acquisition system;
Fig. 3 is the process flow diagram that the utility model embodiment tri-cheats acquisition system.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment mono-
What working face of coal seam back production mainly adopted is wireless electromagnetic wave technology, the method of cheating is generally carried out between two tunnels, as arranged launching site at air way, to the electromagnetic wave of launching a certain frequency in coal seam, Ji lane settles receiver to receive electromagnetic field field intensity H signal, and electromagnetic wave runs into medium in propagate in coal seam while electrically changing, electromagnetic wave is absorbed or shields, receive signal and significantly weaken or can not receive useful signal, as along tunnel multipoint reception, form so-called perspective abnormal.In order to improve downhole wireless electromagnetic wave data acquisition efficiency, the utility model has adopted single-shot Duo Shoushuan lane to replace parallel acquisition method, and the method is applied in the saturating acquisition system in hole.Specific as follows:
Fig. 1 is the schematic diagram of the saturating acquisition system in hole of the utility model embodiment mono-.As shown in Figure 1, the present embodiment provides a kind of hole saturating acquisition system, can specifically comprise: at least one first transmitter 1 is set in air way 2, at least one first receiver 4 is set in Ji lane 3, at least one second transmitter 5 is set in Ji lane 3, and at least one second receiver 6, the first transmitter 1 and the second transmitter 5 are set in air way 2 for alternate emission electromagnetic wave, the field intensity H signal that described the first receiver 4 produces for the electromagnetic wave that receives described the first transmitter 1 and launch; The field intensity H signal that described the second receiver 6 produces for the electromagnetic wave that receives the second transmitter 5 and launch.
Particularly, the ultimate principle of cheating method is by research coal seam, exploiting field, the various radio magnetic wave perspectives that various structures and geologic body cause electromagnetic impact are abnormal, thereby carry out geology deduction and explanation, therefore the utility model is launched radio magnetic wave by least one the first transmitter 1 and at least one second transmitter 5, receive by least one the first receiver 4 and at least one second receiver 6 the field intensity H signal that electromagnetic wave produces, and the first transmitter 1 and the second transmitter 5 are for alternate emission electromagnetic wave, the first transmitter 1 is in the time that air way 2 is launched, many first receivers 4 in Ji lane 3 are started working, after arriving the launch time of agreement, the first transmitter 1 and the first receiver 4 quit work, at this moment the second transmitter 5 and the second receiver 6 proceed to preliminary work, wherein many second receivers 6 receive background lectromagnetism field value, prevent the authenticity that strong electromagnetic wave interfering data gathers.After background lectromagnetism field value gathers, the second transmitter 5 emitting electromagnetic waves, many second receivers 6 receive the field intensity H signal that electromagnetic wave produces.
Further, split in many receivers by the data that same tunnel is gathered, in the time that data derive, utilize the data splicing function of software, the data that are separated in each receiver sort in order, thereby reach the data layout of inverting requirement.
In the present embodiment, provide a kind of hole saturating acquisition system, by at least one first transmitter is set in air way, at least one first receiver is set in Ji lane, at least one second transmitter is set in Ji lane, and at least one second receiver is set in air way, thereby improve downhole wireless electromagnetic wave data acquisition efficiency, reduce personnel's labor capacity and working time.
Embodiment bis-
Fig. 2 A is the first transmitter and the first receiver transmitting reception schematic diagram that the utility model embodiment bis-cheats acquisition system, and Fig. 2 B is the second transmitter and the second receiver transmitting reception schematic diagram that the utility model embodiment bis-cheats acquisition system.
As shown in Figure 2 A, first transmitter 1 is set in air way 2, multiple the first receivers 4 are set in Ji lane 3, the first transmitter 1 moves to multiple the first launching site 7 in air way 2 successively, and at each the first launching site 7 emitting electromagnetic waves, each the first receiver 4 and the corresponding setting of at least one the first launching site 7, for at the first transmitter 1 during at corresponding the first launching site 7 emitting electromagnetic wave, the first receiver 4 receives at the first acceptance point 8 the field intensity H signal that electromagnetic wave that the first transmitter 1 launches produces.
As shown in Figure 2 B, second transmitter 5 is set in machine lane, multiple the second receivers 6 are set in air way 2, the second transmitter 5 moves to multiple the second launching site 9 in machine lane 3 successively, and send electromagnetic wave at each the second launching site 9, each the second receiver 6 and the corresponding setting of at least one the second launching site 9, for at the second transmitter 5 during at corresponding the second launching site 9 emitting electromagnetic wave, the second receiver 6 receives at secondary destination 10 the field intensity H signal that the electromagnetic wave of the second transmitter transmitting produces.
The first transmitter 1, at first launching site 7 emitting electromagnetic waves, hockets at second launching site 9 emitting electromagnetic waves with the second transmitter 5.The anti-acquisition system that the utility model provides also comprises control module, control module is used for controlling the first transmitter 1 and moves, and control the process that the second transmitter 5 moves to another first launching site 7 from first launching site 7 at the first transmitter 1, at second launching site 9 emitting electromagnetic waves; And control the second transmitter 5 and move, and control the process that the first transmitter 1 moves to another second launching site 9 from second launching site 9 at the second transmitter 5, at first launching site 7 emitting electromagnetic waves.
Control module also for: control the first receiver 4 and receive the field intensity H signal that electromagnetic wave that the first transmitter 1 launches produces, and control the second receiver 6 and receive the field intensity H signal that electromagnetic wave that the second transmitter 5 launches produces.
Particularly, as shown in Figure 2 A, the first launching site 7 is odd point, and as shown in Figure 2 B, the second launching site 9 is even number point.When the second transmitter 5 process that the first transmitter 1 moves to another first launching site 7 from first launching site 7 is at second launching site 7 emitting electromagnetic waves; And when the first transmitter 1 process that the second transmitter 5 moves to another second launching site 9 from second launching site 9 is at first launching site 7 emitting electromagnetic waves.
As shown in Figure 2 A and 2 B, transmitter circulates successively in launching site order, until finish the work according to work design drawing.Usually, the range of receiving of the first receiver 4 is no more than 45 degree take the first launching site 1 of correspondence as the fan-shaped angle on summit, and the range of receiving of the second receiver 6 is no more than 45 degree take the second launching site 5 of correspondence as the fan-shaped angle on summit.The refraction effect occurring when preventing electromagnetic wave wide-angle incident coal seam.
In the face of multiple launching site and the acceptance point in two tunnels, after definite workplace tendency length and thickness of coal seam, select suitable frequency of operation, guarantee that the first receiver and the second receiver must receive signal.If the distance between launching site is M, because the reception segment angle of each launching site is no more than 45 degree, be that the wide launching site of every hundred rice and flour should be no more than 42m apart from M, acceptance point distance is Q, gathering distance is 2M, wherein receiver moves to down the time of any according to workplace tendency length and transmitter, can select suitable receiver quantity is N platform, N platform receiver with tunnel is on average born acquisition tasks, it is the acquisition tasks that every receiver is born 2M/N, the reception of every receiver is counted as (2M/N)/Q+1, due to the impact of tunnel condition, every receiver moves to time of next group acceptance point from current acceptance point may be different, therefore transmitter should consider every receiver and move to from current acceptance point at the time of reception of each acceptance point and receiver the time of next group acceptance point in design in the launch time of each launching site, get the launch time of the longest this transmitter of conduct each launching site wherein launch time.
Particularly, take the long 200m of workplace tendency as example, each launching site, apart from be 80m, gathers apart from 160m, and acceptance point distance is 10m, and can be calculated by (2M/N)/Q+1 that collection counts is 17; According to gathering distance, can select transmitter of each block configuration and two receivers, every receiver receives 80m, be that each receiver receives 9 points, now completed the acquisition time of 80 meters using 180 seconds as launch time of transmitter, transmitter is 180 seconds in the launch time of each launching site.If tunnel condition is better, and have number of seconds timing device, launch time can adopt 150 second launch time, configuration by equipment etc. has improved collecting efficiency greatly like this.And receiver receives two secondary data on the acceptance point vertical with transmitter, the data of its overlapping acceptance point can compare the reception quality of data of two receivers, proofread and correct two receivers and whether have systematic error.
The saturating acquisition system in hole that the present embodiment provides is passed through the first transmitter at a first launching site emitting electromagnetic wave, hocket at a second launching site emitting electromagnetic wave with the second transmitter, on the one hand, when the first transmitter is when mobile, the second transmitter carries out electromagnetic wave transmitting; On the other hand, when the second transmitter is when mobile, the first transmitter carries out electromagnetic wave transmitting, improve collecting efficiency, and complete electromagnetic wave reception by multiple receivers are set, thereby improve downhole wireless electromagnetic wave data acquisition efficiency, reduce personnel's labor capacity and working time.
Embodiment tri-
Fig. 3 is the process flow diagram that the utility model embodiment tri-cheats acquisition system, as shown in Figure 3:
Step 101: according to the launching site distance of the long design effort face of tendency, acceptance point distance, collection distance, guarantee that electromagnetic wave penetrates coal seam.
In tunnel, design is layouted the stage, take into full account working face of coal seam tendency long, usually, the reception segment angle of each launching site is no more than 45 degree, be that the wide launching site of every hundred rice and flour is no more than 42m apart from M, the refraction effect occurring while mainly preventing electromagnetic wave wide-angle incident coal seam.In a tunnel, multiple launching site are set, in another tunnel, arrange corresponding acceptance point accordingly; Symmetrical multiple acceptance points in a launching site coverage, by inversion accuracy requirement, arrange acceptance point apart from Q, and gathering distance is 2M.Thereby select suitable frequency of operation, guarantee that field intensity H signal and background lectromagnetism field value that receiver receives have obvious discrimination.
Step 102: according to the number of units that gathers the definite receiver of distance, optimize time of reception, determine the launch time of transmitter.
Launching site is apart from be M, and acceptance point is apart from Q, and gathering distance is 2M, when receiver number of units is N, and determine that the reception of every receiver is counted (2 × M/N)/Q+1, the finally time of reception of definite receiver.
Transmitter moves to the time of next group acceptance point from current acceptance point at the time of reception at each acceptance point that should consider in design every receiver launch time of each launching site and receiver, get the launch time of the longest this transmitter of conduct each launching site wherein launch time.
Step 103: the first transmitter is at air way emitting electromagnetic wave, and the first receiver receives corresponding field intensity H signal at acceptance point.
The first transmitter is at air way emitting electromagnetic wave, and after arriving the launch time of agreement, the first transmitter stops transmitting, and the first receiver stops receiving.
Step 104: the first transmitter stops after transmitting at current the first launching site, and the second receiver receives background lectromagnetism field value.
After the first transmitter and the first receiver quit work, the second receiver and the second transmitter proceed to preliminary work, and wherein many second receivers receive background lectromagnetism field values, prevent the authenticity that strong electromagnetic wave interfering data gathers.
Step 105: the second receiver receives after background lectromagnetism field value, the second transmitter Ji lane emitting electromagnetic wave, the second receiver receives corresponding field intensity H signal at air way acceptance point place.
Step 106: the first transmitter and the second transmitter are launched successively according to the launching site nature sequence number of design drawing, until it is complete to work.
The first transmitter, at a first launching site emitting electromagnetic wave, hockets at a second launching site emitting electromagnetic wave with the second transmitter.Particularly, the first launching site is odd point, and the second launching site is even number point.When the second transmitter the process that the first transmitter moves to another first launching site from first launching site is at a second launching site emitting electromagnetic wave; And when the first transmitter the process that the second transmitter moves to another second launching site from second launching site is at a first launching site emitting electromagnetic wave.
Step 107: utilize the data splicing function of software that the data that are separated in each receiver are sorted according to design drawing order, thereby reach the data layout of inverting requirement.
The utility model provides a kind of hole saturating acquisition system, comprise: at least one first transmitter is set in air way, at least one first receiver is set in Ji lane, and at least one second transmitter is set in Ji lane, at least one second receiver is set in air way, the first transmitter and the second transmitter are for alternate emission electromagnetic wave simultaneously, the field intensity H signal that the first receiver produces for receiving the electromagnetic wave of the first transmitter transmitting, the field intensity H signal that the second receiver produces for receiving the electromagnetic wave of the second transmitter transmitting.In order to improve downhole wireless electromagnetic wave data acquisition efficiency, reduce personnel's workload and working time.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.
Claims (8)
1. the saturating acquisition system in hole, is characterized in that, at least one first transmitter is set in air way, and at least one first receiver is set in Ji lane; At least one second transmitter is set in described machine lane, and at least one second receiver is set in described air way;
Described the first transmitter and described the second transmitter are for alternate emission electromagnetic wave;
The field intensity H signal that described the first receiver produces for receiving the electromagnetic wave of described the first transmitter transmitting; The field intensity H signal that described the second receiver produces for receiving the electromagnetic wave of described the second transmitter transmitting.
2. system according to claim 1, is characterized in that, described first transmitter is set in described air way, and multiple described the first receivers are set in described machine lane;
Described the first transmitter, for moving to successively multiple first launching site of described air way, and at each described the first launching site emitting electromagnetic wave;
Each described the first receiver, with the corresponding setting of the first launching site described at least one, at described the first transmitter during at corresponding the first launching site emitting electromagnetic wave, receives the field intensity H signal that the electromagnetic wave of described the first transmitter transmitting produces.
3. system according to claim 2, is characterized in that, described second transmitter is set in described machine lane, and multiple described the second receivers are set in described air way;
Described the second transmitter, for moving to successively multiple second launching site in described machine lane, and sends electromagnetic wave at each described the second launching site;
Each described the second receiver, with the corresponding setting of the second launching site described at least one, at described the second transmitter during at corresponding the second launching site emitting electromagnetic wave, receives the field intensity H signal that the electromagnetic wave of described the second transmitter transmitting produces.
4. system according to claim 3, is characterized in that, described the first transmitter, at a described first launching site emitting electromagnetic wave, hockets at a described second launching site emitting electromagnetic wave with described the second transmitter.
5. system according to claim 4, is characterized in that, described the first transmitter from described first launching site to the second transmitter described in the process that described in another, the first launching site moves at a described second launching site emitting electromagnetic wave; And
Described the second transmitter from described second launching site to the first transmitter described in the process that described in another, the second launching site moves at a described first launching site emitting electromagnetic wave.
6. system according to claim 5, is characterized in that, also comprises:
Control module, moves for controlling described the first transmitter, and control described the second transmitter described the first transmitter from described first launching site to the process that described in another, the first launching site moves, at a described second launching site emitting electromagnetic wave; And
Control described the second transmitter and move, and control described the first transmitter described the second transmitter from described second launching site to the process that described in another, the second launching site moves, at a described first launching site emitting electromagnetic wave.
7. system according to claim 6, it is characterized in that, described control module also for: control the field intensity H signal that electromagnetic wave that described the first receiver receives described the first transmitter transmitting produces, and control the field intensity H signal that electromagnetic wave that described the second receiver receives described the second transmitter transmitting produces.
8. according to system described in claim 1-7 any one, it is characterized in that, the range of receiving of described the first receiver is no more than 45 degree take the first launching site of correspondence as the fan-shaped angle on summit, and the range of receiving of described the second receiver is no more than 45 degree take the second launching site of correspondence as the fan-shaped angle on summit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833819.7U CN203606514U (en) | 2013-12-16 | 2013-12-16 | Gallery penetration acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833819.7U CN203606514U (en) | 2013-12-16 | 2013-12-16 | Gallery penetration acquisition system |
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| CN203606514U true CN203606514U (en) | 2014-05-21 |
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| CN201320833819.7U Expired - Lifetime CN203606514U (en) | 2013-12-16 | 2013-12-16 | Gallery penetration acquisition system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675924A (en) * | 2013-12-16 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Tunnel radio-wave penetration collection system |
| CN109187643A (en) * | 2018-06-25 | 2019-01-11 | 国网福建省电力有限公司宁德供电公司 | A kind of transmission tower column foot gap measurement device based on wide-angle mensuration |
| 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 |
-
2013
- 2013-12-16 CN CN201320833819.7U patent/CN203606514U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675924A (en) * | 2013-12-16 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Tunnel radio-wave penetration collection system |
| CN103675924B (en) * | 2013-12-16 | 2017-01-18 | 淮南矿业(集团)有限责任公司 | Tunnel radio-wave penetration collection system |
| CN109187643A (en) * | 2018-06-25 | 2019-01-11 | 国网福建省电力有限公司宁德供电公司 | A kind of transmission tower column foot gap measurement device based on wide-angle mensuration |
| 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 |
| CN110954961B (en) * | 2019-11-22 | 2022-07-12 | 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 |
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Inventor after: Meng Qingbiao Inventor after: Wang Guosheng Inventor after: Cao Zhaofei Inventor after: Liu Yong Inventor after: Du Lei Inventor after: Shi Xinquan Inventor after: Cheng Wei Inventor before: Meng Qingbiao Inventor before: Wang Guosheng Inventor before: Cao Zhaofei Inventor before: Liu Yong Inventor before: Du Lei Inventor before: Shi Xinquan Inventor before: Cheng Wei |