CN206959797U - Country rock test system - Google Patents
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- CN206959797U CN206959797U CN201720453883.0U CN201720453883U CN206959797U CN 206959797 U CN206959797 U CN 206959797U CN 201720453883 U CN201720453883 U CN 201720453883U CN 206959797 U CN206959797 U CN 206959797U
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Abstract
The utility model provides a kind of country rock test system, including：Data acquisition device and data processing equipment, the data acquisition device are connected with the data processing equipment；The data acquisition device is used to gather strain data and electric field data of the country rock to be measured at least one period, and the electric field data of the strain data of each period collected and each period is sent to the data processing equipment；Wherein, the data acquisition device is placed in the drilling in the country rock to be measured；The data processing equipment, for the strain data according to each period and the electric field data of each period, determine the deformation parameter of the country rock to be measured；Wherein, the data processing equipment is placed in outside the drilling of the country rock to be measured.Country rock test system provided by the utility model, pass through being used cooperatively for data acquisition device and data processing equipment, the deformation parameter of country rock can be accurately measured, improves the measuring accuracy of surrouding rock deformation situation, theoretical direction is provided to eliminate the potential safety hazard of seam mining.
Description
Technical field
The utility model belongs to seam mining technical field, more particularly to a kind of country rock test system.
Background technology
Country rock is the surrounding rock body of coal mining roadway.In the exploitation process of coal seam and after back production, the country rock of Ileal neobladder
Stress state often change so that the surrouding rock deformation of Ileal neobladder destroys and produces crack, and then causes stratum swelling
Enter stope drift active workings, cause tunnel to cave in, directly threaten the safety of operating personnel.Therefore the surrounding rock's elastic modulus feelings of Ileal neobladder
Condition is the problem of extremely concern in mine safety production.
Prior art can isolate the drilling in country rock by embolism the hole section of certain length, and press water to the hole section,
Deformation and the destruction situation of country rock are determined according to the relation of pressure and flow.But its can only to the deformation of the drilling in country rock with it is broken
Bad situation carries out qualitative test, can not test the deformation quantity and deformation range of country rock change.
The above method is only capable of measuring whether country rock produces deformation or produce crack, can not accurately reflect rock deformation quantity and
Deformation range so that seam mining has larger potential safety hazard.
Utility model content
The utility model provides a kind of country rock test system, is made by the cooperation of data acquisition device and data processing equipment
With can accurately measure the deformation parameter of country rock, improve the measuring accuracy of surrouding rock deformation situation, eliminate the safety of seam mining
Hidden danger.
The utility model provides a kind of country rock test system, including：
Data acquisition device and data processing equipment, the data acquisition device are connected with the data processing equipment；
The data acquisition device is used to gather strain data and electric field data of the country rock to be measured at least one period, and
The electric field data of the strain data of each period collected and each period is sent to the data processing equipment；Its
In, the data acquisition device is placed in the drilling in the country rock to be measured；
The data processing equipment, for the strain data according to each period and the electric field number of each period
According to determining the deformation parameter of the country rock to be measured；The data processing equipment is placed in outside the drilling of the country rock to be measured.
Further, the data acquisition device includes：Straining sensing optical cable, electrode and sleeve pipe, the strain sensing light
Cable and the electrode are fixed on the outside of described sleeve pipe, and described sleeve pipe is placed in the drilling of the country rock to be measured；
The straining sensing optical cable is used to gather strain data of the country rock to be measured in each period, and will collection
To the strain data of each period send to the data processing equipment；
The electrode is used to gather electric field data of the country rock to be measured in each period, and described in collecting
The electric field data of each period is sent to the data processing equipment.
Optionally, the data acquisition device also includes：Temperature-compensating optical cable, the temperature-compensating optical cable are fixed on described
The outside of sleeve pipe；
The temperature-compensating optical cable is used to gathering temperature of the country rock to be measured in each period, and will collect
The temperature of each period is sent to the data processing equipment.
Optionally, the data processing equipment is used for the temperature according to each period, determines each period
Abnormal data caused by temperature in strain data, and remove the abnormal data.
The utility model provides a kind of country rock test system, including：Data acquisition device and data processing equipment, the data
Harvester is connected with the data processing equipment；The data acquisition device is used to gather country rock to be measured answering at least one period
Become data and electric field data, and the electric field data of the strain data of each period collected and each period is sent to this
Data processing equipment；Wherein, the data acquisition device is placed in the drilling in the country rock to be measured；The data processing equipment, is used for
According to the strain data of each period and the electric field data of each period, the deformation parameter of the country rock to be measured is determined；Wherein,
The data processing equipment is placed in outside the drilling of the country rock to be measured.The country rock test system, at data acquisition device and data
Being used cooperatively for reason device, can accurately measure the deformation parameter of country rock, improve the measuring accuracy of surrouding rock deformation situation, to eliminate
The potential safety hazard of seam mining provides theoretical direction..
Brief description of the drawings
Fig. 1 is the structural representation of country rock test system provided by the utility model；
Fig. 2 is wall rock drill-hole structural representation provided by the utility model；
Fig. 3 is the flow chart of country rock method of testing provided by the utility model；
Fig. 4 is the flow chart of another country rock method of testing provided by the utility model；
Fig. 5 is the scatter chart of displacement field provided by the utility model；
Fig. 6 is resistivity inversion figure provided by the utility model.
Description of reference numerals：
1- data acquisition devices；
2- data processing equipments；
3- temperature sensing optic cables；
4- electrodes；
5- electrode connections；
6- sleeve pipes；
7- top plate drillings；
8- bottom plates drill.
Embodiment
The utility model provides a kind of country rock test system, and Fig. 1 is the knot of country rock test system provided by the utility model
Structure schematic diagram.Country rock test system as shown in Figure 1, including：Data acquisition device 1 and data processing equipment 2, data acquisition dress
1 is put to be connected with data processing equipment 2.
Data acquisition device 1 is used to gather strain data and electric field data of the country rock to be measured at least one period, and will
The strain data and the electric field data of each period of each period collected is sent to data processing equipment 2；Wherein, data are adopted
Acquisition means 1 are placed in the drilling in the country rock to be measured.
Data processing equipment 2, for the strain data according to each period and the electric field data of each period, it is determined that
The deformation parameter of the country rock to be measured；The data processing equipment is placed in outside the drilling of the country rock to be measured.
Specifically, the country rock to be measured may include：Country rock at the top of Ileal neobladder and the country rock positioned at Ileal neobladder bottom.Its
In, the country rock at the top of Ileal neobladder can be described as roof rock, and the country rock positioned at Ileal neobladder bottom can be described as floor rocks.This is treated
The drilling surveyed in country rock is towards the drilling of Ileal neobladder in the country rock to be measured.
The electric field data of each period can be earth electric field data.
Fig. 2 is wall rock drill-hole structural representation provided by the utility model.As shown in Fig. 2 the drilling of the country rock to be measured can
Including：Top plate drilling 7 and bottom plate drilling 8.Wherein, top plate drilling 7 can be located at roof rock in drilling, bottom plate drilling 8
Can be the drilling being located in floor rocks.
Wherein, the maximum of vertical range is the first preset value between top plate drilling 7 and Ileal neobladder.First preset value can
With the height more than or equal to leaking crevice belt.The leaking crevice belt can gather underground water or energy inside the roof rock
So that the passage that subsurface flow passes through.The top plate drilling passes through the leaking crevice belt, may be such that the data measured can be more accurate
Reflection country rock to be measured inside deformation and failure situation.
The maximum of vertical range is the second preset value between bottom plate drilling 8 and Ileal neobladder.Second preset value can be more than
Or the depth equal to coal seam floor failure.The coal seam floor failure can be that the floor rocks continuity is destroyed, and transmissibility occurs
The rock stratum band substantially changed.The bottom plate drills through the coal seam floor failure, may be such that the data measured can more accurately reflect
Deformation and failure situation inside country rock to be measured.
The data acquisition device can use cement injection sealing of hole, injection hole sealing behaviour after inserting in the drilling of the country rock to be measured
It may be such that the data acquisition device preferably couples with surrounding rock body so that the data acquisition device cooperates with the country rock to be measured
Deformation, and then make it that measurement result is more accurate.
Specifically, in the exploitation process of coal seam and after back production, the country rock of Ileal neobladder can be deformed and destroyed, and be caused
Its internal structure changes, and the change of country rock internal structure to be measured can then change the conductive condition of country rock so that country rock electricity
Resistance rate changes, while also make it that rock stratum produces deformation and displacement inside country rock.And the electric field data of each period can be anti-
The change in resistance situation of country rock to be measured should be gone out, while the strain data of each period can reflect the deformation of country rock to be measured
Amount.Therefore, by detecting the electric field data and strain data of country rock to be measured, the deformation parameter of country rock to be measured can accurately be determined.
Country rock test system provided by the utility model, including：Data acquisition device and data processing equipment, the data are adopted
Acquisition means are connected with the data processing equipment；The data acquisition device is used to gather strain of the country rock to be measured at least one period
Data and electric field data, and the electric field data of the strain data of each period collected and each period is sent to the number
According to processing unit；Wherein, the data acquisition device is placed in the drilling in the country rock to be measured；The data processing equipment, for root
According to the strain data of each period and the electric field data of each period, the deformation parameter of the country rock to be measured is determined；Wherein, should
Data processing equipment is placed in outside the drilling of the country rock to be measured.Country rock test system provided by the utility model, passes through data acquisition
Being used cooperatively for device and data processing equipment, can accurately measure the deformation parameter of country rock, improve the survey of surrouding rock deformation situation
Precision, and surrouding rock deformation or the destruction situation of energy Accurate Prediction Ileal neobladder are tried, is provided to eliminate the potential safety hazard of seam mining
Theoretical direction.
Further, country rock test system as shown in Figure 1, data acquisition device 1 include：Straining sensing optical cable 3, electrode
4 and sleeve pipe 6, straining sensing optical cable 3 and electrode 4 are fixed on the outside of sleeve pipe 6, and sleeve pipe 6 is placed in the drilling of the country rock to be measured.
Straining sensing optical cable 3 is used to gather the strain data of the country rock to be measured in each period, and should by what is collected
The strain data of each period is sent to data processing equipment 2.
Electrode 4 is used to gather the electric field data of the country rock to be measured in each period, and each period that will be collected
Electric field data send to data processing equipment 2.
Specifically, sleeve pipe 6 can be pvc pipe, for straining sensing optical cable 3 and electrode 4 to be implanted into the brill of the country rock to be measured
Kong Zhong.
Straining sensing optical cable 3 may include：Multiple strain transducers, communications optical cable etc., multiple strain transducers pass sequentially through
Communications optical cable connects.The communications optical cable is also connected with data processing equipment 2, what the communications optical cable can collect strain transducer
Strain data is sent to data processing equipment 2.
Wherein, straining sensing optical cable 3 may include that steel twists formula straining sensing optical cable and fixed-point type straining sensing optical cable, and the steel twists
Strain transducer in formula straining sensing optical cable can use full distributed arrangement, and the steel twists formula straining sensing optical cable can be accurate
Really measure less deformation inside the country rock to be measured.And the strain transducer in the fixed-point type straining sensing optical cable can use interval
The arrangement of distribution, its spacing can be 2 meters, the fixed-point type straining sensing optical cable can accurately measure inside the country rock to be measured compared with
Big deformation.The steel twists formula straining sensing optical cable and the fixed-point type straining sensing optical cable and is used cooperatively, and can meet to be measured to enclose this
Measured while rock deforms in various degree.
Straining sensing optical cable 3 can use Brillouin scattering optical time domain reflection monitoring technology (Brillouin Optical
Time-Domain Reflectometer, abbreviation BOTDR) gather the strain data of the country rock to be measured.Wherein, each period
Electric field data can be the country rock to be measured in sampled point each period strain data.
For example, straining sensing optical cable 3 can be incident from one end of optical fiber with default frequency by the pulsed light of detection, it is incident
Acoustical phonon interaction in pulsed light and optical fiber produces Brillouin scattering, and the Brillouin scattering is along optical fiber backtracking
To the incidence end of pulsed light, the Brillouin's back of the body astigmatism that can be obtained along the optical fiber is handled by a series of signal in the incidence end
Power.Afterwards, straining sensing optical cable 3 can also constantly change the frequency of incident pulse light at regular intervals, it is possible to obtain optical fiber
The Brillouin shift of point is up-sampled, then according to the variable quantity and optical fiber of the Brillouin shift of sampled point, and Brillouin shift
Linear relationship between strain, determine the strain data of the sampled point.
Electrode 4 can be multiple, and multiple electrodes 4 can be connected with electrode connection 5 respectively.The electrode connection 5 also with number
Connected according to processing unit 2, the electrode connection 5 can send the electric field data that electrode 4 collects to data processing equipment 2.Electricity
Pole 4 can gather electric field data of the country rock to be measured in each period using parallel electrical method measuring technology.
For example, electrode 4 keeps real-time contacts by electrode connection 5 and data processing equipment 2, and pass through electrode connection
5 in real time send the electric field data measured to data processing equipment 2.
In use, punctuate first is carried out to each strain transducer and electrode 4 before data acquisition device 1 to be inserted to drilling
Positioning, be easy to the later stage to determine to deform inside the country rock to be measured the particular location of destruction, then by the strain communications optical cable and
The electrode connection 5 is fixed on the outside of sleeve pipe 6, and sleeve pipe is sent into bore inner using the method for drilling implantation, with collection
The strain data of each period and the electric field data of each period, and data processing is carried out by data processing equipment 2.
Wherein, the data positioned according to the punctuate can determine the generation position of the failure and deformation of surrounding rocks to be measured, strain in real time
Sensing optic cable 3 can be real-time, is tested over long distances, can obtain strain data of the country rock to be measured in each period.And
Electrode 4 is tested by electrical method, can measure the deformation of interior surrounding rock structure to be measured in a big way.That is, strain sensing light
Cable 3 can be measured with the deformation and failure of the country rock to be measured, each period when straining sensing optical cable 3 deforms therewith
Strain data, and because straining sensing optical cable 3 is wire distribution, therefore the strain data of each period measured is only capable of reaction and is somebody's turn to do
Deformation extent of the country rock to be measured on the straight line where the straining sensing optical cable 3；And the country rock to be measured that electrode 4 measures is every at this
The electric field data of individual period can then reflect the scope that the deformation in surrounding rock to be measured destroys.
Thus, being used cooperatively by straining sensing optical cable 3 and electrode 4, can measure the country rock to be measured in each period
Strain data and the electric field data of each period, and according to the strain data of each period and the electric field of each period
Data, it can be achieved to the destructiveness of the country rock to be measured and the accurate judgement of damage envelope.
The present embodiment provide data acquisition device, by setting straining sensing optical cable 3 and electrode 4, can accurately measure by
Country rock strain and electric field change situation caused by back production, so as to realize to the surrounding rock failure degree to be measured, damage envelope it is accurate
Judge, theoretical direction is provided to eliminate the potential safety hazard of seam mining..
Optionally, data acquisition device 1 may also include：Temperature-compensating optical cable, temperature-compensating optical cable are fixed on the outer of sleeve pipe 6
Side.
Temperature-compensating optical cable is used to gather the temperature of the country rock to be measured in each period, and by collect this it is each when
The temperature of section is sent to data processing equipment 2.
Specifically, temperature-compensating optical cable may include：Multiple temperature sensors, communications optical cable etc., multiple temperature sensors according to
It is secondary to be connected by communications optical cable.The communications optical cable is also connected with data processing equipment 2, and the communications optical cable can adopt temperature sensor
The temperature collected is sent to data processing equipment 2.
Optionally, data processing equipment 2 is used for the temperature according to each period, determines the strain data of each period
Abnormal data caused by middle temperature, and remove the abnormal data.
Due to the deformation failure inside country rock, and temperature may cause that straining sensing optical cable 3 collects this it is each when
The change of the strain data of section, and it is abnormal data that data caused by temperature are actual in the strain data of each period.It is logical
Cross data processing equipment to be removed abnormal data caused by temperature in the strain data of each period, then according to removal
The strain data of each period after the abnormal data, obtain the displacement field data of each period.
Due in the test system, the temperature of each period can be gathered by temperature-compensating optical cable, then cause data
Processing unit determines abnormal data caused by temperature in the strain data of each period, and by the strain data of each period
Abnormal data caused by middle temperature is removed, and realizes the registration to strain data, and eliminating temperature interference influences so that test number
Improved according to accuracy.So that obtained displacement field data is more accurate, the measuring accuracy of surrouding rock deformation situation is improved.
Optionally, the utility model also provides a kind of country rock method of testing.Wherein, Fig. 3 encloses to be provided by the utility model
The flow chart of rock method of testing, as shown in figure 3, this method may include：
Strain data and electric field number of the country rock to be measured that S301, acquisition data acquisition device are gathered at least one period
According to；Wherein, the data acquisition device is placed in the drilling in the country rock to be measured.
Specifically, the coupling of data acquisition device 1 is arranged in the drilling of the country rock to be measured, to the change inside the country rock to be measured
Shape is destroyed situation and monitored in real time, and obtains the strain data and electric field data of the country rock to be measured.Wherein, can be passed by straining
Sensing optical cable 3 gathers the strain data of at least one period, and the electric field data of at least one period is gathered by electrode 4.
S302, the strain data according to each period, obtain the displacement field data of each period.
Specifically, it can be handled by the strain data of each period of the data processing equipment 2 to collecting, with true
The displacement field data of the fixed country rock to be measured.
S303, the electric field data according to each period, obtain the resistivity data of each period；
Specifically, it can be handled by the electric field data of each period of the data processing equipment 2 to collecting, with true
The resistivity data of the fixed country rock to be measured.
S304, according to the displacement field data of each period and the resistivity data of each period, determine that this to be measured encloses
Deformation parameter of the rock within each period.
Specifically, deformation parameter of the country rock to be measured within each period may include：The country rock to be measured is when this is each
Deformation quantity and deformation range in section, wherein, according to the displacement field data, it can accurately determine the deformation quantity of the country rock to be measured；Root
According to the resistivity data, the deformation range of the country rock to be measured can be accurately determined.
The country rock method of testing that the present embodiment provides, by the integration test of the deformation failure situation to the country rock to be measured,
The strain data and electric field data of total space deformation of the drilling total length during working face extraction are obtained, two kinds of data are mutual
Supplement checking, more accurately reflect the surrouding rock deformation to be measured, the mechanism destroyed.
Country rock method of testing provided by the utility model, including：The country rock to be measured that data acquisition device is gathered is obtained to exist
The strain data and electric field data of at least one period；Wherein, the data acquisition device is placed in the drilling in the country rock to be measured；
According to the strain data of each period, the displacement field data of each period is obtained；According to the electric field data of each period, obtain
To the resistivity data of each period；According to the displacement field data of each period and the resistivity data of each period,
Determine deformation parameter of the country rock within each period.Country rock method of testing provided by the utility model, passes through data acquisition
Being used cooperatively for device and data processing equipment, can accurately measure the deformation parameter of country rock, improve the survey of surrouding rock deformation situation
Precision is tried, theoretical direction is provided to eliminate the potential safety hazard of seam mining.
Optionally, on the basis of method as described above, the utility model also provides a kind of country rock method of testing.Fig. 4
For the flow chart of another country rock method of testing provided by the utility model.Optionally, as shown in figure 4, as described above
According to the strain data of each period in S302, before obtaining the displacement field data of each period, this method may also include：
S401, obtain the temperature of the country rock to be measured that the data acquisition device gathered in each period；
S402, the temperature according to each period, determine abnormal number caused by temperature in the strain data of each period
According to, and remove the abnormal data.
Specifically, because deformation or destruction inside country rock, and temperature may cause what straining sensing optical cable 3 collected
The change of the strain data of each period, the temperature of each period is gathered by temperature-compensating optical cable, then cause data
Processing unit determines abnormal data caused by temperature in the strain data of each period, and by the strain data of each period
Abnormal data caused by middle temperature is removed, and is realized the registration carried out to straining sensing optical cable 3 to the test data of strain, is disappeared
Except temperature interference influences so that the displacement field data of obtained each period is more accurate, improves the survey of surrouding rock deformation situation
Try precision.
Further, the position of each period is obtained according to the strain data of each period in S302 as described above
Move field data, it may include：
According to remove the abnormal data after each period strain data, obtain the displacement number of fields of each period
According to.
The method for the removal abnormal data that the present embodiment provides can be used for removing the abnormal data caused by environment influences,
The measuring accuracy of surrouding rock deformation situation is improved, eliminates the potential safety hazard of seam mining.
Further, each period is obtained according to the strain data of each period in step S302 as described above
Displacement field data may include：Integral Processing is carried out to the strain data of each period, obtains the displacement field of each period
Scatter chart；Wherein, the scatter chart of the displacement field includes the curve for being used to characterize the displacement field data of each period.
Specifically, forming similar stake formula structure after assuming bored grouting, pile body occurs bending and deformation with surrounding rock failure, its
In, it is assumed that pile body is not subjected to displacement in the drilling orifice opening position away from Ileal neobladder, close to the drilling hole bottom position of Ileal neobladder
Place first deforms upon, and the strain data progress integral and calculating to above-mentioned each period can obtain the position in respective two-dimensional space
Move field situation of change.Bringing the strain data of each period into formula (1) can obtain drilling the shift value size of interior every bit.
ν (z) is each sampled point in drilling in the displacement field data of each period, ε in formula (1)m(z) to be every in drilling
Strain data of the individual sampled point in each period, y (z) are the distance between straining sensing optical cable 3 and stake neutral surface, and z is brill
Hole aperture to any point between drilling hole bottom distance.Wherein, the neutral surface can both no pulling force or not had in the hypothesis stake
The face of pressure.
Extract above-mentioned integration data and draw the distribution curve of displacement field.Top plate drilling and bottom plate provided by the utility model
The strain data measuring method of drilling is identical with integration processing method, wherein, by taking top plate drilling as an example, Fig. 5 is the utility model
The scatter chart of the displacement field of offer.Displacement field scatter chart as shown in Figure 5, its abscissa and ordinate can be should
Become the elements of a fix of sensor, the scatter chart of the displacement field of top plate drilling includes being used for the displacement field for characterizing each period
The curve of data.According to the scatter chart of the displacement field, it may be determined that go out the height and caving zone height of leaking crevice belt.Its
In, the caving zone is the country rock internal sabotage to be measured and the rock stratum band being caving to stope drift active workings.As shown in figure 5, the displacement curvature of field
It is the leaking crevice belt that line, which is mutated larger rock stratum band,；The rock stratum band at the maximum and close drilling hole bottom of displacement field curve mutation
For caving zone.The displacement field curve is mutated the change of strain data of each sampled point in different periods in larger rock stratum band
Amount is more than or equal to the first default variable quantity.Each sampled point in the maximum rock stratum band of displacement field curve mutation is when different
The variable quantity of the strain data of section is more than or equal to the second default variable quantity.The first default variable quantity is less than the second default change
Amount.
The height of the leaking crevice belt can be the H shown in Fig. 5LCaving zone height can be the H shown in Fig. 5K。
The strain data measured, can be respectively corresponding to the wall rock drill-hole to be measured by the integration processing method that the present embodiment provides
The displacement of interior every bit, and the height value of leaking crevice belt and caving zone in country rock can be accurately determined, be advantageous to surrounding rock failure
The fine grasp of situation, eliminate the potential safety hazard of seam mining.
Further, in step S303 as described above, according to the electric field data of each period, obtain this it is each when
The resistivity data of section；It may also include：Resistivity inversion operation is carried out to the electric field data of each period, obtain this it is each when
The resistivity inversion figure of section；Wherein, the resistivity inversion figure includes being used to characterize the distribution of the resistivity data of each period
Scope.
Specifically, in this method, the resistivity inversion of a period can be obtained according to the electric field data of a period
Figure, the resistivity inversion figure of a period are included in the resistivity of at least one sampled point or opening position in a period
Data.It according to the strain data of at least one period, can thus obtain the resistivity inversion figure of at least one period.It is at least one
The distribution of the resistivity data of same position or sampled point is different in the resistivity inversion figure of different periods in period.
For example, can be according to the electric field data of each period, the coordinate of each electrode points, using high density electricity in this method
Method instrument carries out resistivity inversion operation, then using Resistivity Tomographic Technology, obtains the resistivity inversion of a period
Figure.Wherein the high-density electric instrument can be produced by the AGI companies in the U.S..Pass through the resistivity inversion of a period
Figure, user, which can understand, know the resistivity distribution situation of diverse location or sampled point in each period, and according to it is multiple when
The resistivity inversion figure of section, user, which can understand, knows the resistivity distribution situation of same position or sampled point in different periods.
According to the resistivity inversion figure of the plurality of period, user can understand deformation and the destruction situation known inside the country rock to be measured.
Top plate drilling provided by the utility model and the electric field measurement method that bottom plate drills are identical with resistivity inversion methods,
By taking top plate drilling as an example, Fig. 6 positions resistivity inversion figure provided by the utility model.Resistivity inversion figure as shown in Figure 6, it is horizontal
Coordinate and ordinate can be the elements of a fix of electrode 4, and Fig. 6 is the resistivity inversion figure of a period.According to the top plate drilling
In the resistivity inversion figure of the plurality of period, the change in resistance situation inside the country rock to be measured, Jin Erke can be dynamically determined
Determine the height and caving zone height of leaking crevice belt.Wherein, crack is more in the country rock to be measured, and resistivity value is bigger.Such as
Shown in Fig. 6, the larger rock stratum band of resistivity value is the rock stratum of the leaking crevice belt, resistivity value maximum and the close drilling hole bottom
Band is caving zone.Each sampled point in the larger rock stratum band of the resistivity value is more than or equal in the resistivity value of different periods
First preset value.Each sampled point in the maximum rock stratum band of the resistivity value is more than or equal in the resistivity value of different periods
Second preset value.First preset value is less than second preset value.
The height of the leaking crevice belt can be the H shown in Fig. 6LCaving zone height can be the H shown in Fig. 6K。
The height of the leaking crevice belt is wherein can determine that according to the scatter chart of displacement field and resistivity inversion figure
HLWith caving zone height HK, finally integrate the height H that the two ways determines leaking crevice beltLWith caving zone height HK, and with
Numerical value the greater is end value.
The resistivity inversion methods that the present embodiment provides, this continuously can be dynamically obtained according to the electric field data measured and to be measured is enclosed
Resistivity data inside rock, while the accurate judgement to caving zone and height of the water conductive fracture zone can be realized, be advantageous to enclosing
Rock destroys the fine grasp of situation, and theoretical direction is provided to eliminate the potential safety hazard of seam mining.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (4)
- A kind of 1. country rock test system, it is characterised in that including：Data acquisition device and data processing equipment, the data acquisition device are connected with the data processing equipment；The data acquisition device is used to gather strain data and electric field data of the country rock to be measured at least one period, and will adopt The strain data of each period collected and the electric field data of each period are sent to the data processing equipment；Wherein, The data acquisition device is placed in the drilling in the country rock to be measured；The data processing equipment, for the strain data according to each period and the electric field data of each period, Determine the deformation parameter of the country rock to be measured；Wherein, the data processing equipment is placed in outside the drilling of the country rock to be measured.
- 2. test system according to claim 1, it is characterised in that the data acquisition device includes：Strain sensing light Cable, electrode and sleeve pipe, the straining sensing optical cable and the electrode are fixed on the outside of described sleeve pipe, and described sleeve pipe is placed in described treat Survey in the drilling of country rock；The straining sensing optical cable is used to gathering strain data of the country rock to be measured in each period, and will collect The strain data of each period is sent to the data processing equipment；The electrode is used to gather electric field data of the country rock to be measured in each period, and described each by what is collected The electric field data of period is sent to the data processing equipment.
- 3. test system according to claim 2, it is characterised in that the data acquisition device also includes：Temperature-compensating Optical cable, the temperature-compensating optical cable are fixed on the outside of described sleeve pipe；The temperature-compensating optical cable is used to gather temperature of the country rock to be measured in each period, and described in collecting The temperature of each period is sent to the data processing equipment.
- 4. test system according to claim 3, it is characterised in that the data processing equipment is used for according to described each The temperature of period, abnormal data caused by temperature in the strain data of each period is determined, and remove the abnormal data.
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| CN201720453883.0U CN206959797U (en) | 2017-04-27 | 2017-04-27 | Country rock test system |
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| CN201720453883.0U CN206959797U (en) | 2017-04-27 | 2017-04-27 | Country rock test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989687A (en) * | 2017-04-27 | 2017-07-28 | 安徽理工大学 | Country rock method of testing and test system |
| LU500662B1 (en) * | 2021-08-30 | 2023-02-28 | Univ Anhui Sci & Technology | Intelligent test apparatus for loading-type plane model frame considering action of confined water |
-
2017
- 2017-04-27 CN CN201720453883.0U patent/CN206959797U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989687A (en) * | 2017-04-27 | 2017-07-28 | 安徽理工大学 | Country rock method of testing and test system |
| LU500662B1 (en) * | 2021-08-30 | 2023-02-28 | Univ Anhui Sci & Technology | Intelligent test apparatus for loading-type plane model frame considering action of confined water |
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