CN109324356A - A kind of mine total space three dimension direct current experimental rig and test method - Google Patents
A kind of mine total space three dimension direct current experimental rig and test method Download PDFInfo
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- CN109324356A CN109324356A CN201811430966.3A CN201811430966A CN109324356A CN 109324356 A CN109324356 A CN 109324356A CN 201811430966 A CN201811430966 A CN 201811430966A CN 109324356 A CN109324356 A CN 109324356A
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Abstract
The invention belongs to mine geophysical prospecting technical fields, it is related to a kind of mine total space three dimension direct current experimental rig and test method, using the Fluid Dynamics working face shoulder-bed resistivity (SBR) in sink, metallic conductor simulates low-resistance anomalous body, and non-metallic isolator simulates high resistance area；Similar tunnel is designed, similar electrode and cable are laid in tunnel, establishes total space experimental observation device；Observation device is fully recessed into the water in sink, it is connected by copper conductor with cable connector, realize the acquisition of DC electrical method instrument data, establish mine total space three dimension direct current test platform, conducting shaft total space three dimension direct current experimental study, three-dimensional DC electrical law technology is improved, so that effectively detection operations face rock stratum watery, better services are prevented and treated in water bursting in mine；Its experimental rig principle is simple, reproducible convenient for operation, practical, environmental-friendly.
Description
Technical field:
The invention belongs to mine geophysical prospecting technical fields, are related to a kind of mine total space three dimension direct current test
Device and test method.
Background technique:
North China type coalfield deep fractures exploitation in China's is constantly subjected to Water Inrush threat, and a large amount of mining Practice proves, adopts
Before detect floor undulation not water zone, be possible to be converted into water zone during working face mining, to cause bottom
Plate gushing water water damage.Therefore, it is one worth constantly deep that Floor water end of love how is effectively detected during the advance of the face
Enter the project probed into.
For rock stratum watery in effectively detection operations face, Three Dimensional Ground DC electrical method technology is applied directly to by people
The detection of formation downhole watery, realizes working face three-dimensional DC electrical law technology.However, conventional three-dimensional DC electrical method technical application
To underground, since underground space limits, electrode and cable can only be laid around working face (ring working face lay electrode and
Cable), electrode and cable cannot be laid inside working face, measurement data points are concentrated mainly on the outside rock stratum of working face, thus
Rock stratum on the inside of floor undulation is caused blind area occur, therefore, mine water prevention and treatment person cannot accurately draw a circle to approve out the model of bottom plate exceptions area
It encloses, easily causes floor undulation water bursting disaster, influence working face and normally promote.
Currently, for conventional three-dimensional DC electrical method technology can only on the outside of detection operations face the watery of rock stratum problem, lead to
It crosses and builds three dimension direct current physical simulation experiment platform in laboratory, face rock stratum watery detection test of carrying out the work is ground
Study carefully, analyzes floor undulation post non of low resistance body abnormal response.However, during the test, traditional three dimension direct current physics
Simulation test is all half space, is not able to satisfy mine total space physical simulation experiment demand.
Summary of the invention:
It is an object of the invention to overcome disadvantage of the existing technology, design provides a kind of mine total space three-dimensional direct current
Electrical method experimental rig and test method, according to the principle of similitude, based in sink water, metallic conductor, non-metallic isolator with adopt
There are similitudes for the country rock of coal working face and low resistance abnormity area and high resistance area, and it is flat to establish the test of mine total space three dimension direct current
Platform, conducting shaft total space three dimension direct current experimental study improve three-dimensional DC electrical law technology, thus effectively detection operations face
Rock stratum watery, better services are in water bursting in mine prevention and treatment person.
To achieve the goals above, the main structure packet of mine total space three dimension direct current experimental rig of the present invention
Include mine total space three-dimensional observation device, DC electrical method instrument, 32 core data acquisition cable, cable interface, sink, Natural Water,
Metallic conductor and non-metallic isolator；Wherein mine total space three-dimensional observation device include pvc pipe plane of vision, pvc pipe pillar,
Small copper wire, copper conductor constitute mine total space three-dimensional observation device；Pvc pipe plane of vision is seen by PVC two-by-two by four pvc pipes
Plane three-way plug connection composition rectangular planar structure is surveyed, for simulating headentry road and return aircourse and working face open-off cut
Eye etc.；Pvc pipe pillar includes long pvc pipe, pvc pipe pillar three-way plug and short pvc pipe, the identical long pvc pipe point of four height
It is not mounted below pvc pipe plane of vision by PVC plane of vision three-way plug, every root long pvc pipe lower end is separately connected one
Pvc pipe pillar three-way plug, short pvc pipe are mounted below long pvc pipe by pvc pipe pillar three-way plug, are used to support observation
Plane and stablize pvc pipe pillar, pvc pipe plane of vision is made to be located at sustained height；With anti-at each pvc pipe pillar three-way plug
The winding of glue cloth, makes pvc pipe pillar three-way plug and pvc pipe plane of vision stable connection；The small copper wire difference of 5cm long is equidistant
It is fixed on four pvc pipes of pvc pipe plane of vision, for simulating the electrode in tunnel, the quantity of small copper wire is seen according to pvc pipe
The length of pvc pipe and the spacing of small copper wire in plane is surveyed to determine；Small copper wire is acquired by copper conductor and cable interface and core data
The length of cable connection, copper conductor is determined according in test demand；Small copper wire and copper conductor junction are wound using mackintosh,
It prevents copper conductor from leaking electricity, electrode is caused to be unable to normal power supply；DC electrical method instrument and 32 core data acquire cable connection, and cable connects
Cable connector sheet metal on mouth is fastened by copper conductor, and Natural Water is filled in sink, and the height of water level of Natural Water is greater than
The height of pvc pipe pillar, less than the height of sink, mine total space three-dimensional observation device is placed in sink, metallic conductor and
Non-metallic isolator is placed inside mine total space three-dimensional observation device in the sink.
Mine total space three-dimensional observation device of the present invention the preparation method comprises the following steps:
(1) it according to principle of similitude design experiment working face plane of vision length and width in the prior art, then uses
The long two short pvc pipes of the interception respectively two of the pvc pipe of long 2m are made two long two short pvc pipes by PVC plane of vision three-way plug
At pvc pipe plane of vision；
(2) according to test demand, the height of pvc pipe pillar is designed, four identical height are then intercepted from the pvc pipe of long 2m
The long pvc pipe of degree connects the long pvc pipe intercepted at PVC plane of vision three-way plug, makes in the other end of long pvc pipe
With pvc pipe pillar three-way plug, connect short pvc pipe, be fabricated to pvc pipe pillar, then in PVC plane of vision three-way plug and
Pvc pipe pillar three-way plug junction is utilized respectively mackintosh winding, makes to be connected firmly between pvc pipe；
(3) it on pvc pipe plane of vision, measures identical distance and makes marks and preset small copper wire position, then in long copper wire
The small copper wire multistage of upper interception 5cm, is fixed on the place that marked for small copper wire using mackintosh；
(4) one end of copper conductor is opened, exposes copper wire, the copper wire exposed in the upper end of small copper wire connection copper conductor,
Copper wire is wound with small copper wire junction using mackintosh again, small copper wire electric leakage is prevented and treated, finally, by copper conductor along pvc pipe
Trend along going out, mostly will be bundled in one piece with copper conductor, be fixed on above pvc pipe, the length of copper conductor can be according to experiment need
Seek design.
The present invention realizes the detailed process of mine total space three dimension direct current test are as follows:
(1) connection of experimental rig: designing according to test requirements document and build sink, Natural Water is put into sink, then will
Mine total space three-dimensional observation device is put into sink middle position, and small copper wire is fixed on to the pvc pipe of pvc pipe plane of vision
On, copper conductor and small copper wire are connected, copper conductor is then pulled out into sink, copper conductor is wrapped in data acquisition cable connector
On sheet metal, then with mackintosh winding prevent from leaking electricity, it is good that DC electrical method instrument and 32 core data are then acquired cable connection,
Metallic conductor and non-metallic isolator are put to the bottom plate Exception Model established in working face mining active process in the sink, test dress
Connection is set to finish；
(2) Test Data Collecting: opening DC electrical method instrument, detect to small copper wire connection, if connection is not
It is good, it needs to reconnect, after determining that small copper wire connection is intact, starts to carry out data acquisition to the bottom plate Exception Model of foundation, and
The test data of acquisition is saved；
(3) test data extract and processing: the test data of acquisition is pressed in into row data processing, it is too small for electric current or
The data for not meeting field distribution are rejected, and the data of requirement extract different device are detected according to working face, to extraction data
Inversion procedure is carried out, the total space three-dimensional data of inverting is obtained；
(4) three-dimensional visualization of mine total space inverting data volume: the total space 3D data volume of inverting is imported existing
Three-dimensional visualization software establishes the 3D data volume of inverting, and according to the high and low resistance modal position situation of foundation, draws different
Dropping cut slice, the terrace cut slice in direction, so that the position in delineation abnormality area, analyzes the validity of test detection achievement.
Compared with prior art, the present invention according to the principle of similitude, based on water, metallic conductor, the non-metallic insulation in sink
There are similitudes for the country rock and low resistance abnormity area of body and coal working face and high resistance area, are enclosed using the Fluid Dynamics working face in sink
Rock resistivity, metallic conductor simulate low-resistance anomalous body, and non-metallic isolator simulates high resistance area；Similar tunnel is designed, in tunnel
Similar electrode and cable are laid, total space experimental observation device is established；Observation device is fully recessed into the water in sink, is passed through
Copper conductor is connected with cable connector, realizes the acquisition of DC electrical method instrument data, establishes the examination of mine total space three dimension direct current
Platform is tested, conducting shaft total space three dimension direct current experimental study improves three-dimensional DC electrical law technology, to effectively detect work
Make face rock stratum watery, better services are in water bursting in mine prevention and treatment person；Its experimental rig principle is simple, reproducible convenient for operation,
It is practical, it is environmental-friendly.
Detailed description of the invention:
Fig. 1 is main structure schematic illustration of the invention.
Fig. 2 is the principle schematic diagram of mine total space three-dimensional observation device of the present invention.
Fig. 3 is that data of the present invention acquire cable interface principle schematic diagram.
Fig. 4 is pvc pipe corbeling schematic illustration of the present invention.
Specific embodiment:
The present invention will be further described by way of example and in conjunction with the accompanying drawings.
Embodiment:
The main structure of mine total space three dimension direct current experimental rig described in the present embodiment includes the mine total space three
It ties up observation device, DC electrical method instrument 1,32 core data and acquires cable 2, cable interface 3, sink 4, Natural Water 5, metallic conductor 8
With non-metallic isolator 9；Wherein mine total space three-dimensional observation device includes pvc pipe plane of vision 7, pvc pipe pillar 6, small copper
Silk 701-732, copper conductor 302 constitute mine total space three-dimensional observation device；Pvc pipe plane of vision 7 is by four 733 liang of pvc pipe
Two by the connection composition rectangular planar structure of PVC plane of vision three-way plug 601, for simulating headentry road and return air
Tunnel and working face open-off cut eye etc.；Pvc pipe pillar 6 includes long pvc pipe 602, pvc pipe pillar three-way plug 603 and short pvc pipe 604,
The identical long pvc pipe 602 of four height is mounted under pvc pipe plane of vision 7 by PVC plane of vision three-way plug 601 respectively
Side, every 602 lower end of root long pvc pipe are separately connected a pvc pipe pillar three-way plug 603, and short pvc pipe 604 passes through pvc pipe pillar
Three-way plug 603 is mounted on long 602 lower section of pvc pipe, is used to support plane of vision and stablizes pvc pipe pillar, keeps pvc pipe observation flat
Face 7 is located at sustained height；It is wound at each pvc pipe pillar three-way plug 603 with mackintosh, inserts pvc pipe pillar threeway
First 603 with 7 stable connection of pvc pipe plane of vision；It is flat that the small copper wire 701-732 of 5cm long is equidistantly fixed on pvc pipe observation respectively
On four pvc pipes in face 7, for simulating the electrode in tunnel, the quantity of small copper wire is according to pvc pipe in pvc pipe plane of vision 7
733 length and the spacing of small copper wire determine；Small copper wire 701-732 passes through copper conductor 302 and the core data of cable interface 301 and 32
It acquires cable 2 to connect, the length of copper conductor is determined according in test demand；Small copper wire and copper conductor junction use mackintosh
Winding, prevents copper conductor from leaking electricity, electrode is caused to be unable to normal power supply；The core data of DC electrical method instrument 1 and 32 acquire cable 2 and connect
It connecing, the cable connector sheet metal 301 on cable interface 3 is fastened by copper conductor 302, Natural Water 5 is filled in sink 4, from
The height of water level of right water 5 is greater than the height of pvc pipe pillar 6, and less than the height of sink 4, mine total space three-dimensional observation device is put
It sets in sink 4, metallic conductor 8 and non-metallic isolator 9 are placed inside mine total space three-dimensional observation device in the sink.
Sink 4 described in the present embodiment uses the commercially available home-use swimming pool of large size, and size is 4m × 2m × 1m；Natural Water 5
For simulating working face roof and floor country rock, volume is 4m × 2m × 0.8m；DC electrical method instrument 1 uses FlashRES64-61
Ultra high density electrical instrument, for acquiring the device of resistivity during testing；The use of metallic conductor 8 0.2m × 0.2m ×
The column metal bucket that the iron plate of 0.02m and a length of 0.2m diameter are 0.1m；Non-metallic isolator 9 uses a length of 0.3m diameter for 8cm
Cylindrical plastic tube and a length of 0.3m, width 0.2m, thickness be 2cm plastic plate.
Mine total space three-dimensional observation device described in the present embodiment the preparation method comprises the following steps:
It (1) is 1.1m × 0.5m's according to the size of principle of similitude design experiment pvc pipe plane of vision 7 in the prior art
Then plane intercepts pvc pipe two of 1.1m and 0.5m respectively on the pvc pipe of long 2m, passes through PVC plane of vision three-way plug
Two long two short pvc pipes are fabricated to pvc pipe plane of vision 7 by 601；
(2) according to test demand, the height of design pvc pipe pillar 6 is 0.6m, then intercepts four from the pvc pipe of long 2m
The long pvc pipe 602 of root 0.6m long connects the long pvc pipe 602 intercepted, in long PVC at PVC plane of vision three-way plug 601
The other end of pipe 602 uses pvc pipe pillar three-way plug 603, and connection length is the short pvc pipe 604 of 0.1m, is fabricated to PVC
Then tube support 6 is utilized respectively waterproof in PVC plane of vision three-way plug 601 and 603 junction of pvc pipe pillar three-way plug
Adhesive plaster winding, makes to be connected firmly between pvc pipe；
(3) it on pvc pipe plane of vision 7, makes marks every 0.1m and presets small copper wire position, then intercepted on long copper wire
Small copper wire is fixed on marked locations using mackintosh, is wound using mackintosh by the small copper wire multistage of 5cm, will
Small copper wire is fixed；
(4) one end of copper conductor is opened, exposes copper wire, the copper wire exposed in the upper end of small copper wire connection copper conductor,
Copper wire is wound with small copper wire junction using mackintosh again, small copper wire electric leakage is prevented and treated, finally, will be with small copper wire 701-706
For the copper conductor of connection along pvc pipe left side along out, the copper conductor connecting with small copper wire 707-712 is suitable out along pvc pipe right side, will
The copper conductor being connect with small copper wire 713-714 along on front side of pvc pipe along going out, the copper conductor being connect with small copper wire 715-717 along
Along out, the copper conductor connecting with small copper wire 718-722, along out, connects pvc pipe rear side along pvc pipe right side with small copper wire 723-728
The copper conductor connect along on the left of pvc pipe along going out, copper conductor connect with small copper wire 729-730 along on rear side of pvc pipe along out, and it is small
The copper conductor of copper wire 731-732 connection, along out, will be bundled in one piece along the more copper conductors gone out, be fixed on along pvc pipe front side
Above pvc pipe, the length of copper conductor can be according to experiment Demand Design.
The present embodiment realizes the detailed process of mine total space three dimension direct current test are as follows:
(1) connection of experimental rig: designing according to test requirements document and builds sink 4, and Natural Water 5 is put into sink 4, then
Mine total space three-dimensional observation device is put into 4 middle position of sink, and small copper wire 701-732 is pulled out into sink 4, copper wire is led
Line 302 is connected after being wrapped on cable connector sheet metal 301 with mackintosh, then by the core data of DC electrical method instrument 1 and 32
Acquisition cable 2 connects, and metallic conductor 8 and non-metallic isolator 9 are placed in sink 4, established in working face mining active process
Bottom plate Exception Model, experimental rig connection finish；
(2) Test Data Collecting: DC electrical method instrument 1 is opened, small copper wire 701-732 connection is detected, such as
Fruit connection is bad, needs to reconnect, after determining that small copper wire 701-732 connection is intact, starts the bottom plate Exception Model to foundation
Data acquisition is carried out, in data acquisition, is first powered to small copper wire 701,703, other any two small copper wires measure, and see
Survey Potential distribution in sink 4；It powers again to 701,705, other small copper wires measure；And so on, according to what is measured above
Mode, wherein any two small copper wire power supply, other small copper wires carry out potential measurement, and the test data of acquisition is saved；
(3) test data extract and processing: the test data of acquisition is pressed in into row data processing, it is too small for electric current or
The data for not meeting field distribution are rejected, and the data of requirement extract different device are detected according to working face, to the number of extraction
According to inversion procedure is carried out, the total space three-dimensional data of inverting is obtained；
(4) three-dimensional visualization of mine total space inverting data volume: the total space 3D data volume of inverting is imported existing
Three-dimensional visualization software establishes the 3D data volume of inverting, and according to the high and low resistance modal position situation of foundation, draws different
Dropping cut slice, the terrace cut slice in direction, so that the position in delineation abnormality area, analyzes the validity of test detection achievement.
Claims (3)
1. a kind of mine total space three dimension direct current experimental rig, it is characterised in that main structure includes that the mine total space is three-dimensional
Observation device, DC electrical method instrument, 32 core data acquisition cable, cable interface, sink, Natural Water, metallic conductor and nonmetallic
Insulator；Wherein mine total space three-dimensional observation device includes pvc pipe plane of vision, pvc pipe pillar, small copper wire, copper conductor structure
At mine total space three-dimensional observation device；Pvc pipe plane of vision passes through PVC plane of vision three-way plug by four pvc pipes two-by-two
Connection composition rectangular planar structure, for simulating headentry road and return aircourse and working face open-off cut eye etc.；Pvc pipe pillar
Including long pvc pipe, pvc pipe pillar three-way plug and short pvc pipe, the identical long pvc pipe of four height is observed by PVC flat respectively
Face three-way plug is mounted below pvc pipe plane of vision, and every root long pvc pipe lower end is separately connected a pvc pipe pillar threeway and inserts
Head, short pvc pipe are mounted below long pvc pipe by pvc pipe pillar three-way plug, are used to support plane of vision and are stablized pvc pipe
Pillar makes pvc pipe plane of vision be located at sustained height；It is wound, is made with mackintosh at each pvc pipe pillar three-way plug
Pvc pipe pillar three-way plug and pvc pipe plane of vision stable connection；The small copper wire of 5cm long is equidistantly fixed on pvc pipe sight respectively
It surveys on four pvc pipes of plane, for simulating the electrode in tunnel, the quantity of small copper wire is according to pvc pipe in pvc pipe plane of vision
Length and small copper wire spacing determine；Small copper wire acquires cable connection by copper conductor and cable interface and core data, and copper is led
The length of line is determined according in test demand；Small copper wire and copper conductor junction are wound using mackintosh, prevent copper conductor from leaking
Electricity causes electrode to be unable to normal power supply；DC electrical method instrument and 32 core data acquire cable connection, and the cable on cable interface connects
Head sheet metal is fastened by copper conductor, and Natural Water is filled in sink, and the height of water level of Natural Water is greater than the height of pvc pipe pillar
Degree, less than the height of sink, mine total space three-dimensional observation device is placed in sink, and metallic conductor and non-metallic isolator are put
It sets inside mine total space three-dimensional observation device in the sink.
2. mine total space three dimension direct current experimental rig according to claim 1, it is characterised in that the mine is entirely empty
Between three-dimensional observation device the preparation method comprises the following steps:
(1) according to principle of similitude design experiment working face plane of vision length and width in the prior art, long 2m is then used
Pvc pipe the long two short pvc pipes of interception respectively two, two long two short pvc pipes are fabricated to by PVC plane of vision three-way plug
Pvc pipe plane of vision；
(2) according to test demand, the height of pvc pipe pillar is designed, then interception four is mutually level from the pvc pipe of long 2m
Long pvc pipe connects the long pvc pipe intercepted at PVC plane of vision three-way plug, uses PVC in the other end of long pvc pipe
Tube support three-way plug connects short pvc pipe, is fabricated to pvc pipe pillar, then in PVC plane of vision three-way plug and pvc pipe branch
Column three-way plug junction is utilized respectively mackintosh winding, makes to be connected firmly between pvc pipe；
(3) it on pvc pipe plane of vision, measures identical distance and makes marks and preset small copper wire position, then cut on long copper wire
Small copper wire is fixed on the place that marked using mackintosh by the small copper wire multistage for taking 5cm；
(4) one end of copper conductor is opened, exposes copper wire, the copper wire exposed in the upper end of small copper wire connection copper conductor, then will
Copper wire is wound with small copper wire junction using mackintosh, small copper wire electric leakage is prevented and treated, finally, the walking along pvc pipe by copper conductor
To along out, it mostly will be bundled in one piece with copper conductor, be fixed on above pvc pipe, the length of copper conductor can be set according to experiment demand
Meter.
3. a kind of method for carrying out the test of mine total space three dimension direct current using device as described in claim 1, feature
It is detailed process are as follows:
(1) connection of experimental rig: designing according to test requirements document and build sink, is put into Natural Water into sink, then by mine
Total space three-dimensional observation device is put into sink middle position, and small copper wire is fixed on the pvc pipe of pvc pipe plane of vision, will
Copper conductor is connected with small copper wire, and copper conductor is then pulled out sink, and copper conductor is wrapped in data acquisition cable connector metal
On piece, then prevent from leaking electricity with mackintosh winding, it is then that DC electrical method instrument and 32 core data acquisition cable connection is good, it will be golden
Belong to conductor and non-metallic isolator puts the bottom plate Exception Model established in working face mining active process in the sink, experimental rig connects
It connects and finishes；
(2) Test Data Collecting: opening DC electrical method instrument, detect to small copper wire connection, if connection is bad, needs
It reconnects, after determining that small copper wire connection is intact, starts to carry out the bottom plate Exception Model of foundation data acquisition, and will acquisition
Test data saved；
(3) test data is extracted and processing: the test data of acquisition is pressed in into row data processing, it is too small for electric current or be not inconsistent
The data for closing field distribution are rejected, and the data of requirement extract different device are detected according to working face, are carried out to data are extracted
Inversion procedure obtains the total space three-dimensional data of inverting；
(4) total space 3D data volume of inverting the three-dimensional visualization of mine total space inverting data volume: is imported into existing three-dimensional
Visual software establishes the 3D data volume of inverting, and according to the high and low resistance modal position situation of foundation, draws different directions
Dropping cut slice, terrace cut slice analyze the validity of test detection achievement thus the position in delineation abnormality area.
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|---|---|---|---|
| CN201811430966.3A CN109324356B (en) | 2018-11-28 | 2018-11-28 | Mine full-space three-dimensional direct current method testing device and testing method |
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| CN201811430966.3A CN109324356B (en) | 2018-11-28 | 2018-11-28 | Mine full-space three-dimensional direct current method testing device and testing method |
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| CN109324356B CN109324356B (en) | 2020-10-16 |
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