CN103176214A - Electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and method thereof - Google Patents
Electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and method thereof Download PDFInfo
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Abstract
The invention relates to an electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and a method thereof. The fully-mechanized excavating onboard geological structure detection system is used for detecting the hidden geological structure in front of a tunneling surface under a coal mine and is composed of a coal road fully-mechanized excavating ahead detector, an emission electrode, a restraining electrode and a grounding electrode. Double-frequency modulating wave current is emitted to an area to be detected through the emission electrode and the restraining electrode so as to generate induced polarization effect in coal rock. Polarization information is collected and processed by a receiving part of the detector, apparent resistivity and visual width frequency, namely power feeding equipment (PFE) values, can be automatically calculated and converted into coordinate graphs for display, accordingly, the ahead tunneling geological structure can be judged, and the abnormal positions can be determined by angle scanning and depth scanning. Detection data can be automatically stored and be further analyzed through special data interpretation software, the ahead tunneling geological structure can be obtained, and advanced detection of the fully-mechanized excavating surface of a coal road can be finished. The electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and the method thereof are in accordance with coal safety verification standards, can be in cooperative work with a heading machine and is fast in detection, high in accuracy, good in instantaneity and convenient to operate.
Description
Technical field
The present invention relates to the forward probe instrument of the coal mine operation in a kind of forward probe field, belong to applied geophysics electrical method advanced detection technology, particularly relate to a kind of electric field leash law coal peace type roadheader and carry tectonic structure detection system and method thereof.
Background technology
The mechanization degree of China's coal-mine mining method strengthens gradually, and is more and more higher to the work efficiency requirement of fully mechanized workface.Must follow the principle of " prediction has pick to visit, and first visits afterwards and digs, and first controls afterwards and adopts " in tunneling process, guarantee the safety in production of the interior personnel of workplace and machine.
Five large disasters are to occupy the second in gas, floods, fire, dust, Power geological disaster to mine water disaster in the colliery, and the annual mine disaster death toll that causes because of water damage remains high.Along with the development of technology and the requirement higher to safety in production, how effectively to survey the latent geologic structure, particularly moisture tectonic structure such as solution cavity, tomography, karst collapse col umn in development end the place ahead, become urgent problem in coal production.And these latent tectonic structures are difficult to find in macroscopical probe procedure of reconnaissance geological survey and accurate location, and therefore, advanced detection technology and the equipment of research fully mechanized workface become problem and research direction that people pay close attention to.
" having pick to visit, first visit afterwards and dig " is the principle that must adhere in the coal production process.Before driving, to the latent tectonic structure in development end the place ahead as can not in time finding out, can bring out the disaster geology phenomenons such as rock burst, Gas Outburst, Floor Heave in Roadway, gushing water, roof collapse, tunnel wall caving, cause casualties and property loss, particularly easily cause especially these disasters in heading end the place ahead.The frequent generation of development end water inrush accident seriously restricts normal the carrying out smoothly of producing in colliery.
An important sources of calamitous gushing water is that the base plate water under high pressure that the latent little structure of geology causes is charged into.Adopt traditional probing Working Means to find out latent tectonic structure, can not obtain gratifying effect, cost is also higher, waste time and energy, and the net degree of drilling is limited, often loses control of minor fault and little karst collapse col umn.Thereby latent tectonic structure and property of water-bearing detection thereof, particularly the tunnelling forward probe is urgent problem in coal production, is also domestic and international one large technical barrier.
Due to the development of mine laneway advanced prediction technology, increasing ground Electrical Prospecting Technology began to be applied to the down-hole, as " direct current three three utmost point probe methods " in mine direct current method, transient electromagnetic method, geological radar method, seismic wave method etc. in recent years.These geophysical prospecting method do not have outstanding advantage in the advanced prediction of coal mine roadway, the problem of existence is: all can not realize integrated with development machine, " visit, pick " separates has affected work efficiency; Forecast accuracy is low, and detecting directivity is poor, is vulnerable to tunnel the impact of rear geological state; Arrangement of electrodes or preliminary work are comparatively loaded down with trivial details, and is time-consuming, causes operating performance poor; The at present colliery probing method is combined with above-mentioned one or more methods use causes workload greatly to increase, the corresponding raising of cost.Therefore, study as early as possible that a kind of method of work is simple, detection accuracy is high, can be used in conjunction with and can satisfy the forward probe method of the special environmental requirement of working in driving face of coal mine with heading equipment, significant.
In view of above discussion, in order to realize " visiting, dig integrated ", improve the accuracy rate of coal road development end forward probe, reduce and survey the used time, guaranteeing that headwork is safe and efficient carries out, the inventor studies, designs through continuous, and after repeatedly verifying, finally creates the present invention with practical value.
Summary of the invention
Fundamental purpose of the present invention is, overcome the deficiency that existing development end forward probe method exists, carry tectonic structure detection system and method thereof and propose a kind of electric field leash law coal peace moulded coal lane roadheader, complete working in driving face of coal mine to harmful architectonic forward probe task such as water, tomography, karst collapse col umn.Because coal road shape and size factor has been considered in this invention, designed rational electrode arrangement mode, adopt the constraint electrode to control the direction of propagation that emitting electrode produces electric field, solved the restive problem of detecting directivity.
Fundamental purpose of the present invention also is, provide a kind of with can carry tectonic structure detection system and method thereof with the electric field leash law coal of development machine collaborative work peace moulded coal lane roadheader, be suitable for using safely in the coal dust environment under coal mine, owing to can realizing while digging spy, real-time detection and demonstration, can simplify the operation of coal road development end, improve headwork efficient.
The object of the invention to solve the technical problems realizes by the following technical solutions.The electric field leash law coal peace moulded coal lane roadheader that proposes according to the present invention carries the tectonic structure detection system, includes that development machine, coal road are combined pick forward probe instrument, fluid pressure type is surveyed emitting electrode, a plurality of constraint electrode, ground-electrode and database and data interpretation software.Wherein, described fluid pressure type is surveyed emitting electrode, comprise hydraulic cylinder and emitting electrode two parts, this hydraulic cylinder body is fixed on machine body of boring machine, and this emitting electrode is arranged on the hydraulic cylinder piston rod end head, during detection, piston rod stretches out, and emitting electrode is inserted in regional coal petrography to be measured emission double frequency alternating current, make the place ahead coal petrography produce effect of induced polarization, cylinder pressure fluid is from the hydraulic system of development machine.
this retrains electrode more than 4, take development end as test surface, described fluid pressure type is surveyed the geometric center position that emitting electrode 3 is placed in development end, be parallel on the same projecting plane of development end, the arrangement of those constraint electrodes is by emitting electrode symmetric points centered by the subpoint on this projecting plane, evenly surround take r as radius and be arranged symmetrically in around emitting electrode, the connecting line of electrode forms regular polygon, those retrain plane, electrode place and are positioned at development end the place ahead certain distance and parallel with development end, this constraint electrode is identical with the emitting electrode waveform with the emission of 2-5 rice with the distance of emitting electrode subpoint, the double frequency alternating current of same polarity, the electric field that emitting electrode is formed is retrained.
This ground-electrode is positioned over 70-80 rice, digging laneway rear, can make fluid pressure type survey emitting electrode and retrain electrode to form the loop.
this coal road is combined pick forward probe instrument and is formed by transmitting and receiving two parts, radiating portion comprises: the emission of double frequency modulating wave and controller, receiving unit comprises: signal receives acquisition module, the signal condition computing module, data-switching and image display module, the data recording memory module, this signal receives acquisition module, the signal condition computing module, data-switching sequentially is connected in series with image display module and data recording memory module and integrates, be placed on the development machine driver's desk, realize that signal receives, process, show and memory function, utilize shown data to come the tectonic structure in preliminary judgement driving the place ahead.Separately, this signal reception acquisition module is connected by wire with fluid pressure type detection emitting electrode; This emission of double frequency modulating wave and controller, be arranged on the development machine driver's desk respectively and be connected emitting electrode with the constraint electrode with fluid pressure type and be connected by wire, can launch as required the double frequency ac modulation ripple electric current of different frequency various combination, offer respectively fluid pressure type and survey emitting electrode and constraint electrode, can control separately and regulate each electrode current magnitude size, in order to realize angle scanning and the depth scan of forward probe.
Described data interpretation software is the special software supporting with this detection system, is used for the data of data recording memory module storage are further analyzed, and with the database data contrast, draws detailed tectonic structure result.
Wherein, the double frequency modulating wave that double frequency ripple modulate emission and controller produce sends in the coal petrography in coal road development end the place ahead through wire and electrode, produces and excites electric field and polarization effect.Signal receives acquisition module and is responsible for the measurement data such as the high and low frequency potential difference (PD) in polarization information and strength of current value are delivered to the signal condition computing module, the apparent resistivity that obtains after calculating and PFE value (Percent frequency effect, depending on the amplitude-frequency rate), processed by display screen output by data-switching and image display module, and by the data recording memory module, data are put into storage medium.It is fool that data interpretation software realizes that in conjunction with database robotization that measurement data is analyzed and result of calculation show.Utilize angle scanning and depth scan mode to realize orientation and the location determination of anomalous body, thereby complete the harmless forward probe that coal road is combined pick face.
the object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further aforesaid electric field leash law coal peace moulded coal lane roadheader and carry the tectonic structure detection system, wherein said constraint electrode arrangement mode is that symmetrical regular polygon is arranged, namely take the face of development end as surveying, the piston rod of surveying hydraulic cylinder stretches out, fluid pressure type is surveyed the geometric center position that emitting electrode 3 pushes up development end, be parallel on the same projecting plane of development end, those constraint electrodes are surveyed the subpoint of emitting electrode on this projecting plane as symcenter take fluid pressure type, take r as radius, evenly surround be arranged symmetrically in emitting electrode around, the connecting line of electrode forms regular polygon, described constraint electrode is existing anchor pole or insert development end by boring in the tunnel, described emitting electrode is the material that do not polarize.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.Aforesaid electric field leash law coal peace moulded coal lane roadheader carries the tectonic structure detection system, and wherein said ground-electrode is positioned over 70-80 rice, development machine rear, and the remainder of system except electrode is installed on the development machine driver control console.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.Aforesaid electric field leash law coal peace moulded coal lane roadheader carries the tectonic structure detection system, wherein said electric field constraint efficiency is to be decided by the ratio size that retrains electrode current magnitude and emitting electrode strength of current, strength of current ratio is larger, and constrained electric field efficient is higher.Judge the roughly scale of anomalous body by changing constrained electric field efficient.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.Aforesaid electric field leash law coal peace moulded coal lane roadheader carries the tectonic structure detection system, and wherein said anomalous body localization method has adopted angle scanning and depth scan mode, satisfies the requirement of directed and depthkeeping.
In the regular polygon electrode arrangement mode, relatively increase and be positioned at the regular polygon strength of current of upper constraint electrode on one side, restrained opposite side corresponding to fields propagate direction deflection, relatively increase the strength of current that is positioned at two constraint electrodes on intersection edges, restrained fields propagate direction is partial to another to the angular direction, realizes the directed requirement of anomalous body in this angle scanning mode.When the fields propagate direction is certain, when increasing emitting electrode strength of current, detection range increases, otherwise when reducing emitter current intensity, detection range reduces, and realizes the positioning requirements of anomalous body in this depth scan mode.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.Aforesaid electric field leash law coal peace moulded coal lane roadheader carries the tectonic structure detection system, wherein said detection instrument is pacified Valuation Standard according to coal when design and development, adopt the electrical equipment of low power consuming, explosion-proof, shockproof, humidity resistance, guarantee the job safety in the coal road workplace.
Electric field leash law coal peace moulded coal of the present invention lane roadheader carries the tectonic structure detection system compared with prior art, has obvious advantage and beneficial effect.By technique scheme, electric field leash law coal of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, can reach suitable technical progress and practicality, and have the extensive promotional value on industry, and it has following advantages at least:
(1) the present invention utilizes the character that the electric field same sex is torn open mutually, adopts the electric field leash law to control the fields propagate direction, has solved the impact that is subject to development end rear geological state and equipment interference when surveying with classic method, and namely direction handling quality is strong.
(2) electric field leash law coal of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, uses the intrinsic safety type electric element, satisfies the requirement of particular surroundings to electrical equipment under coal mine, and security performance is good.
(3) electric field leash law coal of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, the coal road pick existing machinery of face and equipment have been taken into full account, realize forward probe instrument and development machine integrated design, can utilize the anchor pole of accomplishing fluently as exploring electrode, overcome that the development end plant equipment is various, limited space and cause mixed and disorderly, block up, namely simple and direct performance is good.
(4) electric field leash law coal of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, adopts angle scanning and depth scan mode, realizes orientation and the depthkeeping of anomalous body, i.e. accurate positioning.
(5) electric field leash law coal of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, each electrode current magnitude is adjustable, make electric field constraint efficient variable, thereby can determine the scale of anomalous body, can be headwork in conjunction with advantage (2) detection information accurately is provided, formulate process flow for the coal road headwork reliable data foundation is provided.
(6) electric field leash law coal of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, adopt intelligent input, robotization processing, fool demonstration, danger classes audio alert, saved the detection used time, shorten detect cycle, simple to operate, result of detection is understandable, reduce operating personnel's difficulty, can realize real-time detection.
(7) electric field leash law coal of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, and in view of above advantage, so it is low, time saving and energy saving to survey cost, economic performance is good.
In sum, electric field leash law coal peace moulded coal of the present invention lane roadheader carries the tectonic structure detection system, purpose is to propose a kind of forward probe system of new coal road comprehensive mechanized driving face, realization is to real-time detection and the early-warning and predicting of driving front geological structure as water, tomography, karst collapse col umn, reach " visit, dig " integrated target, guarantee safe and efficient the carrying out of coal road headwork.This system is applicable to Driving Face in Coal Tunnel, and has the value on industry.It has above-mentioned many advantages and practical value, its Detection location mode and structural design have no to be published and practical effect, have large different on Detection location mode and structural design from disclosed close patent, and the multinomial effect with enhancement, thereby more be suitable for practicality, and have the extensive value of industry, be really a new and innovative, progressive, practical new design.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and coordinate accompanying drawing to be described in detail as follows.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is that structure of the present invention forms schematic diagram;
Fig. 2 is that system architecture of the present invention forms schematic top plan view;
Fig. 3 is forward probe instrument system structural representation of the present invention;
Fig. 4 is the A-A cloth utmost point mode schematic diagram of Fig. 1 of the present invention
Fig. 5 is the A-A cloth utmost point mode schematic diagram of Fig. 1 of the present invention
Fig. 6 a: coal road of the present invention is combined pick forward probe instrument angle and depth scan schematic diagram;
Fig. 6 b: coal road of the present invention is combined pick forward probe instrument angle and depth scan schematic diagram;
Fig. 6 c: coal road of the present invention is combined pick forward probe instrument angle and depth scan schematic diagram;
Wherein:
1: development machine 2: coal road is combined pick forward probe instrument
3: fluid pressure type is surveyed emitting electrode
4: the constraint electrode
4B1: constraint electrode 4B2: constraint electrode
4B3: constraint electrode 4B4: constraint electrode
4B5: constraint electrode 4B6: constraint electrode
4B7: constraint electrode 4B8: constraint electrode
5: tunnel to be measured regional 6: ground-electrode
7: the emission of double frequency modulating wave and controller 8: signal receives acquisition module
9: signal condition computing module 10: data-switching and image display module
11: the data recording memory module
Embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, the electric field leash law coal peace moulded coal lane roadheader that foundation the present invention is proposed carries embodiment, structure, feature and the effect thereof of tectonic structure detection system and method thereof, is described in detail as follows.
Relevant aforementioned and other technology contents of the present invention, Characteristic can be known to present in the detailed description of the preferred embodiments of following cooperation referenced in schematic.By the explanation of embodiment, can be to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended diagram only be to provide with reference to the use of explanation, the present invention is limited.
The electric field leash law coal of preferred embodiment of the present invention peace moulded coal lane roadheader carries the tectonic structure detection system, as Fig. 1, Fig. 2, shown in Figure 3, combine pick forward probe instrument 2, fluid pressure type detection emitting electrode 3, constraint electrode 4 and ground-electrode 6 by development machine 1, coal road and form.Wherein:
This coal road is combined pick forward probe instrument 2 and is arranged on development machine 1 driver control console, realizes visiting pick integrated.This coal road is combined pick forward probe instrument 2 and is comprised of radiating portion and receiving unit.This radiating portion comprises: the emission of double frequency modulating wave and controller 7.Receiving unit comprises: signal receives acquisition module 8, signal condition computing module 9, data-switching and image display module 10, data recording memory module 11.This coal road is combined pick forward probe instrument 2 and also can be placed on development machine, consists of independently detection system together with electrode.
This fluid pressure type is surveyed emitting electrode 3, comprises hydraulic cylinder and emitting electrode two parts.This hydraulic cylinder body is fixed on development machine 1 fuselage, and this emitting electrode is arranged on the hydraulic cylinder piston rod end head.During detection, piston rod stretches out, and emitting electrode is inserted in regional 5 coal petrographys to be measured, and emission double frequency alternating current makes the place ahead coal petrography produce effect of induced polarization, and cylinder pressure fluid is from the hydraulic system of development machine 1.
As shown in Figure 4 and Figure 5, the present embodiment is established 8 constraint electrode 4B1,4B2,4B3,4B4,4B5,4B6,4B7,4B8.those constraint electrodes are take development end as test surface, described emitting electrode is placed in the geometric center position of development end, be parallel on the same projecting plane of development end, the arrangement of those constraint electrodes 4 is by emitting electrode symmetric points centered by the subpoint on this projecting plane, evenly surround take r as radius and be arranged symmetrically in around emitting electrode, the connecting line of electrode forms square (as shown in Figure 4) or regular hexagon (as shown in Figure 5), those retrain plane, electrode place and are positioned at development end the place ahead certain distance and parallel with development end, this constraint electrode is identical with the emitting electrode waveform with 3 meters emissions with the distance of emitting electrode subpoint, the double frequency alternating current of same polarity, the electric field that emitting electrode is formed is retrained.Existing anchor pole or insert development end by boring in described constraint electrode 4 tunnels, described emitting electrode is the material that do not polarize.
This ground-electrode 6 is positioned over 70-80 rice, digging laneway rear, can make fluid pressure type detection emitting electrode 3 and 8 constraint electrodes 4 form the loop.
This coal road is combined pick forward probe instrument 2 and is comprised of radiating portion and receiving unit.Radiating portion comprises: the emission of double frequency modulating wave and controller 7.Receiving unit comprises: signal receives acquisition module 8, signal condition computing module 9, data-switching and image display module 10, data recording memory module 11.This signal reception acquisition module 8, signal condition computing module 9, data-switching are connected in series with image display module 10 and data recording memory module 11 orders and integrate, and are placed on development machine 1 driver's desk.Realize signal reception, processing, demonstration and memory function, utilize shown data to come the tectonic structure in preliminary judgement driving the place ahead.Separately, this signal reception acquisition module 8 is electrically connected to by wire with fluid pressure type detection emitting electrode 3.This double frequency modulating wave emission is arranged on to distinguish on development machine 1 driver's desk and be connected emitting electrode 3 with fluid pressure type with 8 constraint electrodes 4 with controller 7 and is connected by wire, can launch as required the double frequency ac modulation ripple electric current of different frequency various combination, offer respectively fluid pressure type and survey emitting electrode 3 and constraint electrode 4, can control separately and regulate each electrode current magnitude size, in order to realize angle scanning and the depth scan of forward probe.
Described coal road is combined pick forward probe instrument 2 and is used for controlling fluid pressure type detection emitting electrode 3 and eight constraint electrode 4 emission detection electric currents, and the polarization information that receives is processed and displayed.Coal road is combined the double frequency modulating wave emission of digging in forward probe instrument 2 and is surveyed emitting electrode 3 and eight double frequency ac modulation ripple electric currents that retrain electrodes 4 emission same frequencys, same polarity with controller 8 control fluid pressure types.The polarity of surveying emitting electrode 3 and constraint electrode 4 transmitter currents due to fluid pressure type is identical, the emission electric field under the constraint of constrained electric field forwards driving to be measured regional 5 propagate, thereby solved the whole-space effect of electric field.
Described fluid pressure type is surveyed emitting electrode 3 and is connected with controller 7 and signal reception acquisition module 8 with the double frequency modulating wave emission that coal road is combined in pick forward probe instrument 2, the emission of double frequency modulating wave is controlled fluid pressure type with controller 7 and is surveyed emitting electrode 3 emission double frequency ac modulation ripple electric currents, surveys emitting electrode 3 at fluid pressure type and produces the emission electric field with driving to be measured regional 5.Emitting electrode also as potential electrode, is passed to signal with polarization information and is received acquisition module 8 in transmitter current.
Described eight constraint electrodes 4 are connected with controller 7 with the double frequency modulating wave emission that coal road is combined in pick forward probe instrument 2, double frequency modulating wave emission and controller 7 are controlled the double frequency ac modulation ripple electric current that 4 emissions of constraint electrodes and fluid pressure type are surveyed emitting electrode 3 same frequencys, same polarity, with to be measured regional 5 produce constrained electric fields.Because the current polarity of constraint electrode 4 is identical with the current polarity of fluid pressure type detection emitting electrode 3, utilize the character of electric field two like magnetic poles repel each other, just can control the direction of the propagation of electric field.
As shown in Fig. 4,5, described eight constraint electrodes 4 are with symmetrical square or orthohexagonal cloth utmost point mode, evenly, the symmetrical fluid pressure type that is arranged in surveys on eight directions of surrounding of emitting electrode 3, be respectively and retrain electrode 4B1, constraint electrode 4B2, constraint electrode 4B3, constraint electrode 4B4, constraint electrode 4B5, constraint electrode 4B6, constraint electrode 4B7, constraint electrode 4B8.A0 (+) surveys emitting electrode 3 for fluid pressure type, and A1 (+) represents eight constraint electrodes 4.During electrode work, fluid pressure type surveys emitting electrode 3 and eight constraint electrodes 4 are worked simultaneously, and the strength of current size of each electrode can be regulated separately.
As shown in Fig. 6 (a), fluid pressure type surveys emitting electrode 3 and eight constraint electrodes 4 are launched the double frequency alternating current of same polarities to driving to be measured regional 5 simultaneously.According to same sex electric current phase exclusion principle, fluid pressure type is surveyed emission electric field and eight constrained electric field interactions that constraint electrode 4 produces that emitting electrode 3 produces, the emission electric field is retrained, and be bell mouth shape surveying the place ahead, when retraining the strength of current in the same size of electrodes 4 for eight, can make the probe current along continuous straight runs be radial to driving depths propagation.
As shown in Fig. 6 (a), wish strengthens investigation depth, must strengthen the intensity of transmitter current.When the fields propagate direction is certain, when increasing fluid pressure type and surveying emitting electrode 3 strength of current, detection range increases, and search coverage is 2 positions that increase to cross section 1 from the cross section.Otherwise when reducing fluid pressure type and surveying emitter 3 strength of current, detection range reduces, and search coverage is 1 position that arrives cross section 2 from the cross section, realizes the positioning requirements of anomalous body in this depth scan mode.
As shown in Fig. 6 b, 6c, relatively increase and be positioned at the regular polygon strength of current of upper two constraint electrodes 4 on one side, restrained opposite side corresponding to fields propagate direction deflection, relatively increase be positioned at two on the intersection edges mid point constraint electrode 4 and the strength of current of drift angle constraint electrode 4, restrained fields propagate direction is partial to another to the angular direction, realizes the directed requirement of anomalous body in this angle scanning mode.Depth scan and angle surface sweeping are combined just can judge soon exactly abnormal direction and distance.Described driving to be measured regional 5 is the conical region in development end the place ahead.Survey at fluid pressure type the electrochemical process that complexity can occur for the medium in driving to be measured regional 5 under the i.e. effect of an electric field of electric field that the double frequency Interaction Law of Electric Current of emitting electrode 3 and 4 emissions of constraint electrode forms, be polarization phenomena, and to form a polarized electric field that increases in time and increase be secondary electrical field.
In order to obtain obvious effect of induced polarization, make fluid pressure type survey that low-frequency component frequency in the double frequency alternating current of emitting electrode 3 and 4 emissions of constraint electrode is fully low (is designated as f
L), under its effect the medium of driving in to be measured regional 5 can, fully to be polarized, the low frequency potential difference (PD) Δ V that records
LIn contain enough secondary field current potentials; Make fluid pressure type survey that radio-frequency component frequency in the double frequency alternating current of emitting electrode 3 and 4 emissions of constraint electrode is fully high (is designated as f
H), the medium of search coverage has little time to produce effect of induced polarization, the high-frequency electrical potential difference Δ V that records under its effect
HIn almost there is no the secondary field current potential, Δ V
HValue close to the primary field current potential.At this moment just can calculate the number percent that voltage of secondary field accounts for the induced polarization resultant field by formula (1.1), i.e. the PFE value.
Described constraint electrode 4 and coal road are combined signal in pick forward probe instrument 2 and are received acquisition module 8 and be connected, are responsible for receiving polarization information, and polarization information is delivered in signal reception acquisition module 8 does follow-up processing.
Described signal receives acquisition module 8 measurement data such as high and low frequency potential difference (PD) and strength of current value in polarization information is delivered to signal condition computing module 9, the apparent resistivity that obtains after calculating and PFE value, processed by display screen output by data-switching and image display module 10, and put into storage medium by data recording memory module 11.It is fool that data interpretation software realizes that in conjunction with database robotization that measurement data is analyzed and result of calculation show.Utilize angle scanning and depth scan mode to realize orientation and the depthkeeping judgement of anomalous body, thereby complete the forward probe that coal road is combined pick face.
Described data interpretation software is compared the apparent resistivity that calculates with the apparent resistivity scope of different target body in database, the details such as the particular type of judgement detection of a target body, scale, volume.If containing the dangerous geology such as water body, karst collapse col umn, tomography, detection the place ahead reports to the police.When entering alarm module, image conversion shows apparent resistivity, PFE value, and represents the character of the detection of a target in the respective distance image.
Described coal road is combined pick forward probe instrument 2 and is pacified Valuation Standard in strict accordance with coal in design during with development, adopts the electric component of low power consuming, explosion-proof, shockproof, humidity resistance, guarantees the job safety in the coal road workplace.And this design can suppress effectively, and the low frequency terrestrial current disturbs and electromagnetic coupled is disturbed, the precision that assurance is surveyed.
Surveying under electric field action, tunneling to be measured regional 5 the induced polarization phenomenon occurs.
The implementation step that constrained electric field method intrinsic safety type coal road is combined pick detection system and method thereof is:
(1) piston rod of the hydraulic cylinder of fluid pressure type detection emitting electrode 3 stretches out, and the emitting electrode that will be arranged on the piston rod front end inserts in regional 5 coal petrographys to be detected;
(2) coal road is combined the double frequency modulating wave emission of digging in forward probe instrument 2 and is controlled with controller 8 the double frequency ac modulation ripple electric current that fluid pressure types are surveyed emitting electrode 3 and constraint electrode 4 emission same frequencys, same polarity.Form electric field at electrode and to be measured regional 5;
(3) fluid pressure type detection emitting electrode 3 interacts with the electric field that constraint electrode 4 forms, and the detection electric field is retrained within the specific limits.
Retrain the strength of current size of electrode 4 relevant position electrodes by adjusting, with angle scanning and the depth scan that realizes surveying;
(4) under the effect of probe current, tunnel regional 5 coal petrography generation induced polarization phenomenons to be measured, ground-electrode 6 is placed in 70-80 rice, development machine rear, forms current return;
(5) coal road is combined the polarization information that the signal reception acquisition module 8 in pick forward probe instrument 2 gathers on emitting electrodes;
(6) do to the received signal the processing such as amplification, filtering by signal condition and computing module 9, and calculate the electrical parameters such as PFE value and apparent resistivity;
(7) information after being processed by data-switching and graphics memory module 10 is presented on display.By data recording memory module 11, the data that record are stored at last;
(8) with data interpretation software, data are further analyzed, draw tectonic structure result more specifically.
adopted the anomalous body localization method of angle scanning and depth scan mode, satisfy the requirement of directed and depthkeeping, be positioned at the strength of current of a plurality of constraint electrodes of a certain position by increase, a restrained position corresponding to fields propagate direction deflection, relatively increase be positioned at two on the intersection edges mid point the constraint electrode and the strength of current of drift angle constraint electrode, restrained fields propagate direction is partial to another to the angular direction, realize the directed requirement of anomalous body in this angle scanning mode, when the fields propagate direction certain, when increasing emitting electrode strength of current, detection range increases, otherwise, when reducing emitter current intensity, detection range reduces, realize the positioning requirements of anomalous body in this depth scan mode.
the above, it is only preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (7)
1. an electric field leash law coal peace type roadheader carries the tectonic structure detection system, include development machine (1), it is characterized in that: also comprise: coal road is combined pick forward probe instrument (2), fluid pressure type is surveyed emitting electrode (3), a plurality of constraint electrodes (4), ground-electrode (6) and database and data interpretation software form, wherein, described fluid pressure type is surveyed emitting electrode (3), comprise hydraulic cylinder and emitting electrode two parts, this hydraulic cylinder body is fixed on development machine (1) fuselage, this emitting electrode is arranged on the hydraulic cylinder piston rod end head, during detection, piston rod stretches out, emitting electrode is inserted in the coal petrography of zone to be measured (5), emission double frequency alternating current, make the place ahead coal petrography produce effect of induced polarization, cylinder pressure fluid is from the hydraulic system of development machine (1),
the described electrode (4) that retrains more than 4, take development end as test surface, described emitting electrode is placed in the geometric center position of development end, be parallel on the same projecting plane of development end, the arrangement of those constraint electrodes (4) is by emitting electrode symmetric points centered by the subpoint on this projecting plane, evenly surround take r as radius and be arranged symmetrically in around emitting electrode, those retrain plane, electrode place and are positioned at development end the place ahead certain distance and parallel with development end, this constraint electrode is identical with the emitting electrode waveform with the emission of 2-5 rice with the distance of emitting electrode subpoint, the double frequency alternating current of same polarity, the electric field that emitting electrode is formed is retrained,
Described ground-electrode (6) is positioned over 70-80 rice, digging laneway rear, can make fluid pressure type survey emitting electrode (3) and retrain electrode (4) to form the loop;
described coal road is combined pick forward probe instrument (2) and is comprised of radiating portion and receiving unit, radiating portion comprises: the emission of double frequency modulating wave and controller (7), receiving unit comprises: signal receives acquisition module (8), signal condition computing module (9), data-switching and image display module (10), data recording memory module (11), this signal receives acquisition module (8), signal condition computing module (9), data-switching is connected in series with image display module (10) and data recording memory module (11) order and integrates, be placed on development machine (1) driver's desk, realize that signal receives, process, show and memory function, utilize shown data to come the tectonic structure in preliminary judgement driving the place ahead, separately, this signal reception acquisition module (8) is electrically connected to fluid pressure type detection emitting electrode (3), this emission of double frequency modulating wave and controller (7), be arranged on to distinguish on development machine (1) driver's desk and be connected emitting electrode (3) with fluid pressure type with constraint electrode (4) and be connected by wire, can launch as required the double frequency ac modulation ripple electric current of different frequency various combination, offer respectively fluid pressure type and survey emitting electrode (3) and constraint electrode (4), can control separately and regulate each electrode current magnitude size, in order to realize angle scanning and the depth scan of forward probe,
Described data interpretation software is the special software supporting with this detection system, is used for the data of data recording memory module (11) storage are further analyzed, and with the database data contrast, draws detailed tectonic structure result.
2. electric field leash law coal peace type roadheader according to claim 1 carries the tectonic structure detection system, it is characterized in that wherein said constraint electrode (4) arrangement is that symmetrical regular polygon is arranged, namely take the face of development end as surveying, the piston rod of surveying hydraulic cylinder stretches out, fluid pressure type is surveyed emitting electrode 3, the top is to the geometric center position of development end, be parallel on the same projecting plane of development end, those constraint electrodes (4) are surveyed the subpoint of emitting electrode 3 on this projecting plane with fluid pressure type
Be symcenter, take r as radius, evenly surround be arranged symmetrically in emitting electrode around, the connecting line of electrode forms regular polygon, described constraint electrode (4) is existing anchor pole or insert development end by boring in the tunnel, and described emitting electrode is the material that do not polarize.
3. the described electric field leash law of any one coal peace type roadheader carries the tectonic structure detection system according to claim 1-2, it is characterized in that described electric field constraint efficiency is to be decided by the ratio size that retrains electrode (4) strength of current and fluid pressure type detection emitting electrode (3) strength of current, strength of current ratio is larger, and constrained electric field efficient is higher.
4. electric field leash law coal peace type roadheader according to claim 3 carries the tectonic structure detection system, it is characterized in that described coal road comprehensive pick forward probe instrument (2) is arranged on development machine (1), realizes visiting the integrated requirement of pick.
5. electric field leash law coal peace type roadheader according to claim 4 carries the tectonic structure detection system, it is characterized in that described coal road comprehensive pick forward probe instrument (2) has shockproof, humidity resistance, the electrical equipment that forms coal road comprehensive pick forward probe instrument (2) all meets coal peace Valuation Standard, low consumption, safety.
6. the electric field leash law coal peace type roadheader that adopts according to claim 1 carries the method for tectonic structure detection system, and it is characterized in that: its key step is as follows:
(1) piston rod of the hydraulic cylinder of fluid pressure type detection emitting electrode (3) stretches out, and the emitting electrode that is arranged on the piston rod front end is inserted in the coal petrography of zone to be detected (5);
(2) coal road is combined the double frequency modulating wave emission of digging in forward probe instrument (2) and is controlled with controller 8 the double frequency ac modulation ripple electric current that fluid pressure types are surveyed emitting electrode (3) and retrained electrode (4) emission same frequency, same polarity.Form electric field at electrode and zone to be measured (5);
(3) fluid pressure type detection emitting electrode (3) interacts with the electric field that constraint electrode (4) forms, and the detection electric field is retrained within the specific limits,
Retrain the strength of current size of electrode (4) relevant position electrode by adjusting, with angle scanning and the depth scan that realizes surveying;
(4) under the effect of probe current, tunnel zone to be measured (5) coal petrography generation induced polarization phenomenon, ground-electrode 6 is placed in 70-80 rice, development machine rear, forms current return;
(5) coal road is combined the polarization information on signal reception acquisition module (8) the collection emitting electrode of digging in forward probe instrument (2);
(6) do to the received signal the processing such as amplification, filtering by signal condition and computing module (9), and calculate the electrical parameters such as PFE value and apparent resistivity;
(7) information after being processed by data-switching and graphics memory module (10) is presented on display, by data recording memory module (11), the data that record is stored at last;
(8) with data interpretation software, data are further analyzed, draw tectonic structure result more specifically.
7. the leash law coal peace type roadheader method of carrying the tectonic structure detection system is characterized in that according to claim 6: the anomalous body localization method that has adopted angle scanning and depth scan mode, satisfy the requirement of directed and depthkeeping, be positioned at the strength of current of a plurality of constraint electrodes of a certain position by increase, a restrained position corresponding to fields propagate direction deflection, relatively increase be positioned at two on the intersection edges mid point the constraint electrode and the strength of current of drift angle constraint electrode, restrained fields propagate direction is partial to another to the angular direction, realize the directed requirement of anomalous body in this angle scanning mode, when the fields propagate direction certain, when increasing emitting electrode strength of current, detection range increases, otherwise, when reducing emitter current intensity, detection range reduces, realize the positioning requirements of anomalous body in this depth scan mode.
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| CN103616727A (en) * | 2013-12-20 | 2014-03-05 | 中国矿业大学(北京) | Dynamic orient electric field exciting coal road fully-mechanized excavating advanced detection launching system for mine |
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| CN104730992A (en) * | 2015-03-23 | 2015-06-24 | 中国矿业大学(北京) | Phase-sensitive detecting circuit used for focusing dual-frequency induced polarization method |
| CN105676296A (en) * | 2016-02-26 | 2016-06-15 | 中国矿业大学(北京) | Isolated-driven control circuit for mining focused dual-frequency intensification-polarization instrument |
| CN105785125A (en) * | 2016-03-04 | 2016-07-20 | 中国矿业大学 | Coal rock identification method based on digital dual-clamp phase volometer |
| CN105785478A (en) * | 2016-04-13 | 2016-07-20 | 华中科技大学 | System suitable for testing surface polarization effect between solid-phase samples and current electrodes |
| CN105785478B (en) * | 2016-04-13 | 2018-02-02 | 华中科技大学 | A kind of system for being applied to surface polarization effect between test solid phase sample and current electrode |
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