CN204422776U - A kind ofly identify and extract the device of coal mine roadway lateral wall less parallel minor fault signal - Google Patents
A kind ofly identify and extract the device of coal mine roadway lateral wall less parallel minor fault signal Download PDFInfo
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- CN204422776U CN204422776U CN201520004570.8U CN201520004570U CN204422776U CN 204422776 U CN204422776 U CN 204422776U CN 201520004570 U CN201520004570 U CN 201520004570U CN 204422776 U CN204422776 U CN 204422776U
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Abstract
The utility model discloses and a kind ofly identify and extract the device of coal mine roadway lateral wall less parallel minor fault signal, belong to exploration geophysics.The investigative range of conducting electrical method is the total space, and when only detecting the minor fault of coal road lateral wall, forward and backward side discontinuously plastid is a kind of interference.This patent gives a kind of device identifying lateral wall minor fault signal in these interference.This device near left side side, right side side and the intersection of base plate, is respectively put three electrodes of A at a distance of the identical polar of certain intervals, B, C and D, E, F is powered.When A, B, C of left side side power respectively, same position obtains the electric signal of a reflection minor fault, simultaneously when D, E, F of right side side power respectively, certain other same position obtains the electric signal of a reflection minor fault, if the position of this signal is close to the side of left side, then it is the reflection of left side side minor fault; If close to the side of right side, then it is the reflection of right side side minor fault.
Description
One. technical field: the present invention relates to and a kind ofly identify and extract the device of coal mine roadway lateral wall less parallel minor fault signal, by National Standard of the People's Republic of China " subject classification and code ", the utility model patent belongs to " exploration geophysics (coding: 1702065) " in geoscience, namely, applied geophysics (physical prospecting, geophysical survey).
Two. background technology
In coal seam, turn-off is one of gas enrichment areas at the minor fault of 0.5 meter ~ 5 meters, is also conduit pipe.This minor fault brings great threat to Safety of Coal Mine Production.At present, China's shallow coal has substantially been exploited and has been over, and the coal seam that a lot of colliery is exploited is subsurface about-700 meters.Want to make clear at subsurface-700 meters of, the turn-off in development end front is at the minor fault of 0.5 meter ~ 5 meters, and current ground physical prospecting is helpless.At present both at home and abroad, the tomography of more than 500 meters turn-offs more than 10 meters can be found out with three-dimensional high-precision seismic detection method.The resolution of ground physical prospecting increases with depth of exploration and reduces.The following coal seam that will exploit may, subsurface about-1000 meters, at this moment use the minor fault in ground physical prospecting detection coal mine will be very difficult.In order to make minor fault latent in coal road road (tunnel) lateral wall clear, if by working position classification, the method adopted both at home and abroad at present can be classified as two classes, and a class is surface process, and another kind of is tunnel method in well.
In surface process, there are three-dimensional high-precision seismic detection method and boring method.Describe before the relative merits of three-dimensional high-precision seismic detection method; Boring method maximum shortcoming of constructing is that expense is extra-high, to take the engineering time long, and when meeting soft formation on occasion, boring can deflect, beat less than immediately below.
In well in the method for tunnel, it comprises geology method, advanced parallel heading method, horizontal protruded drill hole method, sound detection, wave reflection method and resistivity method.Horizontal protruded drill hole method executive cost is high, it is long to take the engineering time, and easily causes artificial tunnel accident, and when meeting soft formation on occasion, boring can deflect, and beats less than dead ahead.Echolation is according to the tectonic structure of the parameters such as radar waveform, electromagnetic intensity, amplitude and two way travel time just deducibility coal road road lateral wall, its resolution is high, not damaged, detection and data processing speed are fast, maneuverability, easy to operate, but its forecast distance shorter (only having tens meters), the hardware in tunnel is very large and be difficult to eliminate on the impact of result of detection.
Conducting electrical method (resistivity method) is a kind of geophysics branching method of inferring rock distribution and character according to rock resistivity and space electric field distribution.Because its depth of exploration (forward probe distance) is closely related with the laying length of measurement mechanism, under the prerequisite that tunnel length meets the demands, its depth of exploration or forward probe distance can reach more than 100 meters, and there is the features such as exploration efficiency is high, less investment, easy construction is flexible, device form is various, particularly crucially the reflection of resistivity method to low-resistance geologic bodies such as moisture minor faults is highly sensitive, resolution characteristic strong, has its unique advantage in forward probe field.
Conducting electrical method is the with the most use and effect the best way of current coal mine roadway forward probe, but it is a total space probe method, the scope of its distribution of current and reflection is the total space, the minor fault being approximately parallel to tunnel only detecting coal mine roadway lateral wall is wished for us, the geology discontinuum at front, tunnel, rear is exactly a kind of interference, and this serious interference have impact on the accuracy of geophysical data analysing and data processing, repeatability and detection accuracy.How to eliminate or to weaken this interference, further, from these interference, identify the approximately parallel minor fault of coal mine roadway lateral wall, also do not have good method, device or equipment at present, the utility model patent gives and a kind ofly identifies and extract the device of coal mine roadway lateral wall less parallel minor fault signal.
Three. summary of the invention
1. goal of the invention
As in background technology say, conducting electrical method is a total space probe method, the scope of its distribution of current and reflection is the total space, the minor fault being approximately parallel to tunnel only detecting coal mine roadway lateral wall is wished for us, the geology discontinuum at front, tunnel, rear is exactly a kind of interference, and this serious interference have impact on the accuracy of geophysical data analysing and data processing, repeatability and detection accuracy.How to eliminate or to weaken this interference, further, from these interference, identify the approximately parallel minor fault of coal mine roadway lateral wall, also do not have good method, device or equipment at present, the utility model patent gives and a kind ofly identifies and extract the device of coal mine roadway lateral wall less parallel minor fault signal.Here is principle of work (technical scheme) and the advantage (beneficial effect) of this device.
2. technical scheme
The basic thought of 2.1 technical schemes: can by the needs of research from the result that conducting electrical method volume is explored in order to reach, effective separation also extracts the object of tunnel lateral wall less parallel minor fault information respectively, the basic thought or the principle of work that solve the technical scheme of this problem make use of at tunnel lateral wall, front, the geology discontinuum (comprising minor fault) at rear is for the same sensing point in tunnel, its position is different, thus their (geology discontinuums) are relative to the different sensing points in tunnel, its position is again this different brass tacks, in tunnel, multiple different sensing point is put in portion, according to the detection information on these different sensing points, further identification also extracts the signal of coal mine roadway lateral wall less parallel minor fault.
2.2 concrete technical schemes: identify to reach and extract the object of the signal of coal mine roadway lateral wall less parallel minor fault, according to " the geology discontinuum (comprising minor fault) on diverse location is for the same sensing point in tunnel; its positional information is different " this brass tacks, can realize this object, the technical scheme of specific implementation is as follows:
As shown in drawings, assuming that the surrounding in tunnel, except minor fault, then there is no other geology discontinuum.The minor fault F1 that distance left side side (1) is h1 is had in left side side (1) of tunnel (3); The minor fault F2 that distance right side side (2) is h2 is had in right side side (2) of tunnel (3); There is a distance transmitting electrode B to be the minor fault F4 of h4 in the front of meeting head on of tunnel (3); There is a distance transmitting electrode B to be the minor fault F3 of h3 at the rear of tunnel (3).
When single transmitting electrode is powered, such as, when transmitting electrode B powers, obtain the electric signal of a minor fault, this signal may be the minor fault signal at side or right side side or front or rear on the left of tunnel.
In order to accurately judge and identify the signal that this minor fault signal is the minor fault where gone up actually, at this moment, as shown in drawings, in tunnel, side (1) and right side side (2) are respectively put three apart the electrodes of A of the identical polar of certain intervals (such as 4 meters (5)), B, C and D, E, F are powered on the left of the tunnel.Electrodes of A, B, C help the intersection with base plate (3) on the left of tunnel, and transmitting electrode D, E, F help the intersection of (2) and base plate (3) on the right side of tunnel.In three electrodes of A of side (1) on the left of the tunnel, between B, C, be spaced apart 4 meters, simultaneously electrodes of A, B, C line with help on the left of tunnel parallel.Also be 4 meters at the interval between three transmitting electrodes D, E, F of side (2) on the right side of the tunnel, simultaneously transmitting electrode D, E, F line with help on the right side of tunnel parallel.
When electrodes of A, B, C and D, E, F power respectively, be obtained for the electric signal of a minor fault separately, this signal may be the minor fault signal helping (1), right side side (2), front, rear on the left of tunnel.In order to accurately judge and identify the signal that this minor fault signal is the minor fault where gone up actually, at this moment, can with following combination determining method, identify and extract the signal of coal mine roadway lateral wall less parallel minor fault.
When three electrodes of A, B, C helping on the left of tunnel power respectively, same position obtains the electric signal of a reflection minor fault, this signal may be the signal of the minor fault parallel with tunnel that be that help on the left of tunnel or right side side, instead of the signal of front, tunnel or rear minor fault F3 or F4.Does is that the signal of minor fault F1 or F2 parallel with tunnel that be that help on the left of tunnel or right side side actually? this is, if the minor fault of this signal reflection help from left side three electrodes of A, B, C nearly (helping relatively), away from three transmitting electrodes D, E, F of right side side (opposing left side), and the distance of difference is the width (4) in tunnel, then illustrating that the minor fault that this signal reflects is helped in left side, is the reflection of the F1 minor fault in accompanying drawing.Similar, if close to three transmitting electrodes D, E, F that the minor fault of this signal reflection is helped from right side (opposing left side), away from three electrodes of A, B, C of left side side (relatively right side side), and the distance of difference is the width (4) in tunnel, then illustrating that the minor fault that this signal reflects is helped on right side, is the reflection of the F2 minor fault in accompanying drawing.
3. beneficial effect: the beneficial effect of the utility model patent effectively can identify and extract in coal mine roadway lateral wall and the approximately parallel minor fault signal of tunnel lateral wall, improves in detection coal mine roadway lateral wall and the accuracy of the approximately parallel minor fault of tunnel lateral wall, the reliability of explanation results.This apparatus structure is simple, easily uses, cost is low.
Four. accompanying drawing illustrates:
Accompanying drawing, a kind of identification also extracts the device key diagram of coal mine roadway lateral wall less parallel minor fault signal.
In the accompanying drawings, help on the left of (1) tunnel; (2) help on the right side of tunnel; (3) roadway floor; (4) width in tunnel; (5) distance between electrodes of A and transmitting electrode B, this distance is 4 meters.
Five. embodiment:
As shown in drawings, in tunnel, side (1) and right side side (2) are respectively put three apart the electrodes of A of the identical polar of certain intervals (such as 4 meters (5)), B, C and D, E, F are powered on the left of the tunnel.Electrodes of A, B, C help the intersection with base plate (3) on the left of tunnel, and transmitting electrode D, E, F help the intersection of (2) and base plate (3) on the right side of tunnel.In three electrodes of A of side (1) on the left of the tunnel, between B, C, be spaced apart 4 meters, simultaneously electrodes of A, B, C line with help on the left of tunnel parallel.Also be 4 meters at the interval between three transmitting electrodes D, E, F of side (2) on the right side of the tunnel, simultaneously transmitting electrode D, E, F line with help on the right side of tunnel parallel.
When three electrodes of A, B, C helping on the left of tunnel power respectively, same position obtains the electric signal of a reflection minor fault, simultaneously, when three transmitting electrodes D, E, F helping on the right side of tunnel power respectively, certain other same position obtains the electric signal of a reflection minor fault, at this moment can judge that the electric signal of this reflection minor fault is from tunnel lateral wall, this signal may be the signal of the minor fault parallel with tunnel that be that help on the left of tunnel or right side side, instead of the signal of front, tunnel or rear minor fault.Does is that the signal of minor fault F1 or F2 parallel with tunnel that be that help on the left of tunnel or right side side actually? this is, if the minor fault of this signal reflection help from left side three electrodes of A, B, C nearly (helping relatively), away from three transmitting electrodes D, E, F of right side side (opposing left side), and the distance of difference is the width (4) in tunnel, then illustrating that the minor fault that this signal reflects is helped in left side, is the reflection of the F1 minor fault in accompanying drawing.Similar, if close to three transmitting electrodes D, E, F that the minor fault of this signal reflection is helped from right side (opposing left side), away from three electrodes of A, B, C of left side side (relatively right side side), and the distance of difference is the width (4) in tunnel, then illustrating that the minor fault that this signal reflects is helped on right side, is the reflection of the F2 minor fault in accompanying drawing.
Like this, just effectively can identify and extract the signal of coal mine roadway lateral wall less parallel minor fault, and analyzing its attitude further.
Claims (2)
1. identify a device for coal mine roadway lateral wall less parallel tomography, it is characterized in that: in tunnel, side and right side side respectively put three apart the electrodes of A of the identical polar of certain intervals, B, C and D, E, F power on the left of the tunnel; Electrodes of A, B, C help on the left of tunnel with the intersection of base plate and the line of A, B, C with help parallel on the left of tunnel, three electrodes of A, between B, C, be spaced apart 4 meters; Transmitting electrode D, E, F help on the right side of tunnel with the intersection of base plate and the line of D, E, F with help parallel on the right side of tunnel, the interval between three transmitting electrodes D, E, F is also 4 meters.
2. a kind of device identifying coal mine roadway lateral wall less parallel tomography according to claim 1, it is characterized in that: when A, B, C of left side side power respectively, same position obtains the electric signal of a reflection minor fault, simultaneously when D, E, F of right side side power respectively, certain other same position obtains the electric signal of a reflection minor fault, if the position of this signal is close to the side of left side, then it is the reflection of left side side minor fault; If close to the side of right side, then it is the reflection of right side side minor fault.
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| CN201520004570.8U CN204422776U (en) | 2015-01-06 | 2015-01-06 | A kind ofly identify and extract the device of coal mine roadway lateral wall less parallel minor fault signal |
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| CN201520004570.8U CN204422776U (en) | 2015-01-06 | 2015-01-06 | A kind ofly identify and extract the device of coal mine roadway lateral wall less parallel minor fault signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963173A (en) * | 2020-03-16 | 2020-11-20 | 济宁矿业集团有限公司安居煤矿 | Construction method for advancing fault crossing during crossheading of coal mine |
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2015
- 2015-01-06 CN CN201520004570.8U patent/CN204422776U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963173A (en) * | 2020-03-16 | 2020-11-20 | 济宁矿业集团有限公司安居煤矿 | Construction method for advancing fault crossing during crossheading of coal mine |
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Granted publication date: 20150624 Termination date: 20180106 |
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