CN105352635B - Underground coal and rock space built-in type three-dimensional stress monitoring system and monitoring method - Google Patents
Underground coal and rock space built-in type three-dimensional stress monitoring system and monitoring method Download PDFInfo
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- CN105352635B CN105352635B CN201511003848.0A CN201511003848A CN105352635B CN 105352635 B CN105352635 B CN 105352635B CN 201511003848 A CN201511003848 A CN 201511003848A CN 105352635 B CN105352635 B CN 105352635B
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- 239000003245 coal Substances 0.000 title claims abstract description 69
- 239000011435 rock Substances 0.000 title claims abstract description 69
- 238000012544 monitoring process Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000001939 inductive effect Effects 0.000 claims abstract description 70
- 230000006698 induction Effects 0.000 claims abstract description 39
- 238000012360 testing method Methods 0.000 claims description 45
- 239000000919 ceramic Substances 0.000 claims description 43
- 238000005553 drilling Methods 0.000 claims description 19
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 2
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- 230000002153 concerted effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
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- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
Underground coal and rock space built-in type three-dimensional stress monitoring system and monitoring method, belong to coal and rock security technology area.It is characterized in that：Including being fixed on coal and rock（1）In inductive output device（3）, inductive output device（3）In comprise at least stress induction module（12）, in stress induction module（12）In be provided with for coal and rock（1）The stress mornitoring unit that three-dimensional stress is detected, the output signal of stress mornitoring unit is by signal wire（6）Draw.Including stress monitoring flow and the temperature-compensating flow carried out before stress mornitoring flow.By this underground coal and rock space built-in type three-dimensional stress monitoring system, the stress in three directions of coal and rock can be detected, to the stress of coal and rock come press direction and size realize it is more accurate judge, so as to improve the security of underground construction.
Description
Technical field
Underground coal and rock space built-in type three-dimensional stress monitoring system and monitoring method, belong to coal and rock safe practice neck
Domain.
Background technology
Crustal stress is deposited in the earth formation not by the natural stress of Engineering Disturbance, also referred to as primary stress, absolute stress or original
Rock stress.The underground engineering constructions such as colliery can cause the redistribution of primitive stress, and the stress of redistribution is referred to as secondary answer
Power, secondary stress.Crustal stress is ground and underground geotechnical engineering design and the prerequisite of the scientification of decision-making, and secondary stress pair
In findding out underground engineering construction scope stress distribution situation, underground engineering dynamic disaster is administered（Such as rock burst, bump）Have
Significance.Crustal stress complex genesis, state is changeable, is the result of nature many factors combined influence, major influence factors
There are plate boundary extruding, earth internal stress, earth rotation and earth mantle thermal convection current etc., chief component is rock gravity power and structure
Make stress.Secondary stress is influenceed by the factor such as type of geological conditions, mining work activities, and disturbance scale and degree have very big area
Not, secondary stress distribution has very big otherness, on the one hand can produce the concentration of stress；On the other hand stress release can be produced,
Trigger dynamic disaster accident.
In the prior art, when engineering site carries out stress monitoring, mostly use what is be improved based on pressure cell
Drilling hole stress test device, such as now widely used fluid pressure type borehole stressmeter.Such device internal liquid in-site pouring compared with
Hardly possible is grasped, and is irrigated oil pipe and be easily damaged and cause stress monitoring to fail, and can not be timely after the installation of such monitor for stress
Drilling good coupling is installed with coal petrography vivo devices, device has space with hole wall, causes Monitoring Data inaccurate, can only monitor
Unidirectional relative stress, the purpose monitored in real time to coal and rock three-dimensional stress state can not be realized, so that can not accurate judgement coal petrography
Direction is pressed with accurate to press size in vivo, so as to causing can not to be that advanced prevention dynamic disaster provide basic data support.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, there is provided it is a kind of can be to the three of coal and rock
The stress in individual direction is detected, to the stress of coal and rock come press direction and size realize it is more accurate judge, so as to improve
The underground coal and rock space built-in type three-dimensional stress monitoring system and monitoring method of underground construction security.
The technical solution adopted for the present invention to solve the technical problems is：The underground coal and rock space built-in type three-dimensional stress
Monitoring system, it is characterised in that：Including the inductive output device being fixed in coal and rock, inductive output device includes stress sense
Module is answered, the stress mornitoring unit for being detected to coal and rock three-dimensional stress, stress are provided with stress induction module
The output signal of detection unit is drawn by signal wire.
Preferably, described inductive output device also includes shell body, and described stress induction module is located in shell body
And the surface for protruding from shell body is set, and the temperature compensation module for sensing coal petrography temperature is additionally provided with shell body,
Temperature compensation module is compensated to the output of stress induction module, and the output signal of temperature compensation module is drawn by signal wire.
Preferably, described stress induction module includes piezoelectric ceramics fixed seat, and the top of piezoelectric ceramics fixed seat is set
There is platform, stress mornitoring unit is fixed on the platform, and the shell body that stress mornitoring unit protrudes from inductive output device is set.
Preferably, described stress mornitoring unit includes piezoelectric transducer and stress cover, and piezoelectric transducer is fixed on pressure
On platform at the top of electroceramics fixed seat；
Stress cover is arc of the spiral-lock at the top of piezoelectric transducer, and its outer surface protrudes from the shell of inductive output device
Body, its medial surface top and the upper surface of piezoelectric transducer fit.
Preferably, described piezoelectric transducer includes three groups of piezoelectric ceramic pieces stacked：X is to piezoelectric ceramic piece, Y-direction piezoelectricity
Potsherd and Z-direction piezoelectric ceramic piece.
Preferably, described temperature compensation module includes temperature sensor fixed seat and by temperature sensor fixed seat
Fixed temperature sensor, temperature sensor are bonded with stress induction module.
Preferably, described shell body is cylindric, the forward and backward both ends inside it be also respectively provided with positioning end block and
End fixed seat, signal wire self-induction output device end are drawn；Concrete Filled is filled between shell body and coal and rock.
Underground coal and rock space built-in type three-dimensional stress monitoring method, it is characterised in that：Including stress monitoring flow and
The temperature-compensating flow carried out before stress mornitoring flow.
Preferably, described stress mornitoring flow, comprises the following steps：
Step a1, coal and rock to be measured is determined, and inductive output device is put into the drilling for being opened in coal and rock；
Step a2, the signal wire of inductive output device is drawn from drilling；
Step a3, the data of inductive output device are led in monitoring host computer by signal wire；
Step a4, the data exported by monitoring host computer to inductive output device are analyzed and temperature-compensating, to coal and rock
Stress situation judged.
Preferably, described temperature-compensating flow, comprises the following steps：
Step b1, according to the working environment of inductive output device, it is determined that needing to carry out some test temperatures of temperature test
Point；
Step b2, inductive output device is placed under test temperature point, and records inductive output device in real time in test temperature
Output valve under degree point；
Step b3, judges whether output valve of the inductive output device under the test temperature point is stablized, and is held if stable
Row step b4, unstable rule return to step b2；
Step b4, using deviation of the output valve of inductive output device as inductive output device at such a temperature, and remember
Record the test temperature point corresponding to the deviation；
Step b5, if completed the temperature test under all test temperature points, if completed, performed step b6, such as
Fruit is not yet completed, return to step b2, carries out the temperature-compensating test of next test temperature point；
Step b6, all test temperature points of inductive output device and the deviation under each test temperature point are entered
Row records and forms the relation table of temperature-deviation of the inductive output device.
Compared with prior art, beneficial effect possessed by the present invention is：
1st, can be to three directions of coal and rock by this underground coal and rock space built-in type three-dimensional stress monitoring system
Stress is detected, to the stress of coal and rock come press direction and size realize it is more accurate judge, applied so as to improve underground
The security of work.
2nd, by setting temperature compensation module, the operating temperature of stress induction module can be monitored in real time, thus
Know the operating temperature of stress induction module, and the pass of temperature-deviation of the stress induction module obtained according to testing in advance
It is table, the output bias that stress induction module can be influenceed and be occurred by temperature are excluded, therefore test result is more
Accurately.
3rd, by setting stress cover, the stress for the coal and rock that can be subject to is transferred directly to piezoelectric transducer, simultaneously
Serve the protective effect to piezoelectric transducer.
4th, three-dimensional detection, measurement accuracy are carried out to the stress of coal and rock as piezoelectric transducer by using piezoelectric ceramic piece
And reliability is higher.
Brief description of the drawings
Fig. 1 is underground coal and rock space built-in type three-dimensional stress monitoring system structure diagram.
Fig. 2 is underground coal and rock space built-in type three-dimensional stress monitoring system inductive output apparatus structure schematic diagram.
Fig. 3 is underground coal and rock space built-in type three-dimensional stress monitoring system stress induction modular structure schematic diagram.
Fig. 4 is A-A sectional views in Fig. 3.
Fig. 5 is underground coal and rock space built-in type three-dimensional stress monitoring system piezoelectric sensor structure schematic diagram.
Fig. 6 is underground coal and rock space built-in type three-dimensional stress monitoring system temperature compensation module structural representation.
Fig. 7 is underground coal and rock space built-in type three-dimensional stress monitoring method flow chart.
Fig. 8 is underground coal and rock space built-in type three-dimensional stress monitoring method temperature-compensating flow chart.
Wherein：1st, coal and rock 2, Concrete Filled 3, inductive output device 4, installation drilling 5, signal wire protection
Pipe 6, signal wire 7, data collecting instrument 8, industrial looped network 9, positioning end block 10, positioning hole 11, temperature-compensating mould
Block 12, stress induction module 13, shell body 14, end fixed seat 15, stress cover 16, piezoelectric transducer
1601st, X is to piezoelectric ceramic piece 1602, Y-direction piezoelectric ceramic piece 1603, Z-direction piezoelectric ceramic piece 17, piezoelectric ceramics fixed seat
18th, glue 20, temperature sensor fixed seat 21, adhesive layer 22, temperature sensor are filled.
Embodiment
Fig. 1 ~ 8 are highly preferred embodiment of the present invention, and 1 ~ 8 the present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, underground coal and rock space built-in type three-dimensional stress monitoring system, including be fixed in coal and rock 1
Inductive output device 3.Installation drilling 4 is offered in coal and rock 1, inductive output device 3 passes through after being arranged in installation drilling 4
Into installation drilling 4, the fixation of inductive output device 3 is realized in placing concrete filling 2.In the placing concrete into installation drilling 4
Signal wire protection pipe 5 pre-buried first before filling 2, for the signal wire 6 in inductive output device 3 to be drawn, signal wire 6 uses
Multicore signal wire, simultaneously independent it can export different electric signals.Signal wire 6 is defeated with the data of data collecting instrument 7 after drawing
Inbound port is connected, and the data-out port of data collecting instrument 7 is led by network connection into industrial looped network 8 and further with monitoring
Machine is connected.
As shown in Fig. 2 inductive output device 3 includes columned shell body 13 and is successively set in shell body 13
Position end block 9, temperature compensation module 11, stress induction module 12 and end fixed seat 14, on shell body 13 with stress induction
Position corresponding to module 12 offers mounting hole, and the outer ring of stress induction module 12 protrudes from the side of shell body 13 and set.Fixed
Through hole is offered on position end block 9, temperature compensation module 11, stress induction module 12 and the axial direction of end fixed seat 14, successively
The multiple through holes set are formed through the upward positioning hole 10 of the inner shaft of inductive output device 3 each other.In temperature compensation module 11
And the wire for transmitting data is provided with stress induction module 12, different core in all wire access signal wires 6
In line, the transmission of data is independently realized.The wire of temperature compensation module 11 and stress induction module 12 passes through positioning hole 10
Drawn from the end of end fixed seat 14.In inductive output device 3, positioning end block 9 one end is front end, and before positioning end block 9
Hold as cone tip shape, in actual installation, positioning end block 9 one end is first fed in installation drilling 4.
As shown in Fig. 3 ~ 4, stress induction module 12 includes the piezoelectric ceramics fixed seat 17 of cylinder, composition positioning hole 10
Through hole is opened at the axle center of piezoelectric ceramics fixed seat 17.The upper level of piezoelectric ceramics fixed seat 17 is provided with platform, pressed
Electric transducer 16 is fixed on the surface of the platform by adhesive.Spiral-lock has stress cover 15 above piezoelectric ceramics fixed seat 17,
The spiral-lock of stress cover 15 is bonded after completing with the upper surface of piezoelectric transducer 16, the contact surface of piezoelectric transducer 16 and stress cover 15
Between by the adhesive of insulated type carry out glue cemented fixed, the sky formed between the outlet of piezoelectric transducer 16 and stress cover 15
In gap, it is filled by filling glue 18.
Stress cover 15 is arc top plate shape, is horizontal plane at the top of its medial surface, by the spiral-lock of stress cover 15 in piezoelectric ceramics
After the top of fixed seat 17, the upper surface of horizontal plane and piezoelectric transducer 16 at the top of the medial surface of stress cover 15 fits.
The top of shell body 13 offers the opening being consistent with the shape of stress cover 15, and the extrados of stress cover 15 is opened from the top of shell body 13
Expose at mouthful and protrude from the lateral surface of shell body 13.
In this underground coal and rock space built-in type three-dimensional stress monitoring system, piezoelectric transducer 16 is passed by piezoelectric ceramics
Sensor is realized.As shown in figure 5, piezoelectric transducer 16 includes three groups of piezoelectric ceramic pieces stacked：X is to piezoelectric ceramic piece 1601, Y-direction
Piezoelectric ceramic piece 1602 and Z-direction piezoelectric ceramic piece 1603, by X to piezoelectric ceramic piece 1601, Y-direction piezoelectric ceramic piece 1602 and Z
The power in X-direction, Y-direction and Z-direction can be measured respectively to piezoelectric ceramic piece 1603, it is same as the prior art, X to
Piezoelectric ceramic piece 1601, Y-direction piezoelectric ceramic piece 1602 and Z-direction piezoelectric ceramic piece 1603 form by two panels potsherd, respectively group
Into the positive pole and negative pole of piezoelectric ceramic piece, then by wire respectively by X to piezoelectric ceramic piece 1601, Y-direction piezoelectric ceramic piece
1602 and the two poles of the earth of Z-direction piezoelectric ceramic piece 1603 draw electric signal and be respectively connected in cored wire different in signal wire 6, it is final to realize
The output of pressure signal.
After stress 15 stress of cover, the power that can be subject to is transferred on piezoelectric transducer 16, piezoelectric transducer 16 by
After power, the X in it is experienced respectively to piezoelectric ceramic piece 1601, Y-direction piezoelectric ceramic piece 1602 and Z-direction piezoelectric ceramic piece 1603
The stressing conditions of X-direction, Y-direction and Z-direction, and pressure signal is exported as electronic signals.Work as different directions
Electric signal be uploaded to monitoring host computer through signal wire 6, data collecting instrument 7, after industrial looped network 8, monitoring host computer is according to three sides
To stressing conditions calculated, be calculated its make a concerted effort size and Orientation, so as to calculate the feelings of stress in coal and rock 1
Condition, the convenient analysis for carrying out the stress situation of coal and rock 1.X is to piezoelectric ceramic piece 1601, Y-direction piezoelectric ceramic piece 1602 and Z-direction piezoelectricity
The position of 1,603 3 groups of piezoelectric ceramic pieces of potsherd can arbitrarily be changed.
As shown in fig. 6, temperature compensation module 11 includes temperature sensor fixed seat 20 and is bonded in by adhesive layer 21
The temperature sensor 22 at the rear portion of temperature sensor fixed seat 20, temperature sensor 22 are bonded with stress induction module 12.Temperature passes
The use of sensor fixed seat 20 is cylindric, and the through hole of positioning hole 10 in composition inductive output device 3 is offered at its axle center.To coordinate
The ring section of temperature sensor fixed seat 20, temperature sensor 22 is realized using commercially available common ring temperature sensor, warm
The temperature signal of degree sensor 22 is exported as electronic signals, and the wire for exporting electric signal accesses above-mentioned signal wire
In 6, the output of temperature signal is finally realized.
When actually carrying out pressure measxurement, in coal and rock 1 change of temperature can cause the piezoelectricity in stress induction module 12
The change of the output valve of sensor 16, therefore by setting temperature compensation module 11, work temperature that can be to stress induction module 12
Degree is monitored in real time, and monitoring host computer is converted to temperature signal after receiving the electric signal of the feeding of temperature compensation module 11, by
This knows the operating temperature of stress induction module 12, and temperature-deviation of the stress induction module 12 obtained according to testing in advance
The relation table of value, stress induction 12 output bias value at such a temperature of module is obtained according to tabling look-up, and exported accordingly
Value complement is repaid.Therefore, in this underground coal and rock space built-in type three-dimensional stress monitoring system, by setting temperature compensation module
11, the output bias that stress induction module 12 can be received to temperature to be influenceed and occur are excluded, therefore test result is more
Accurately.
As shown in fig. 7, underground coal and rock space built-in type three-dimensional stress monitoring method, comprises the following steps：
Step 1001, coal and rock to be measured is determined.
Step 1002, construction and installation drill.
Installation drilling 4 of the diameter more than inductive output device 3 is opened up by rig in coal and rock to be measured.
Step 1003, inductive output device 3 is installed；
Inductive output device 3 is put into by installation 4 inner terminals of drilling by mounting rod.
Step 1004, signal wire protection pipe 5 is installed；
The signal wire 6 of inductive output device 3 is drawn from installation drilling 4, and signal wire protection pipe 5 is installed.
Step 1005, filling Concrete Filled 2；
Concrete is inserted into installation drilling 4, forms the Concrete Filled 2 of the border of inductive output device 3.
Step 1006, installation data Acquisition Instrument 7；
Installation data Acquisition Instrument 7, and signal wire 6 is connected with the input of data collecting instrument 7, then by data collecting instrument 7
Output end access industrial looped network 8.
Step 1007, transmit, record Monitoring Data；
The data that inductive output device 3 monitors are exported to data collecting instrument 7 through signal wire 6, and pass through data collecting instrument 7
Data-out port monitoring host computer is delivered into industrial looped network 8 and further by network connection, remembered by monitoring host computer
Record.
Step 1008, data analysis；
The data being sent into by monitoring host computer to data collecting instrument 7 are analyzed, and the stress situation of coal and rock 1 is supervised
Survey.
, it is necessary to carry out temperature-compensating test to inductive output device 3 before actual monitoring is carried out, and record inductive output
The relation table of temperature-deviation of device 3.As shown in figure 8, temperature-compensating is tested, comprise the following steps：
Step 2001, test temperature point is determined.
According to the working environment of inductive output device 3, it is determined that needing to carry out some test temperature points of temperature test.
Step 2002, inductive output device 3 is placed under test temperature point.
Step 2003, curve of output is recorded；
Record inductive output 3 output valve under test temperature point of device in real time.
Step 2004, whether data are stablized；
Judge whether output valve of the inductive output device 3 under the test temperature point is stablized, step is performed if stable
2004, unstable rule return to step 2003.
Step 2005, the deviation of inductive output device 3 is recorded；
After output value stabilization of the inductive output device 3 under test temperature point, the output valve of inductive output device 3 is made
For the deviation of inductive output device 3 at such a temperature, and record the test temperature point corresponding to the deviation.
Step 2006, if complete temperature test；
Tester judges whether to have completed the temperature test under all test temperature points, if completed, performs step
2007, if not yet completed, return to step 2002, carry out the temperature-compensating test of next test temperature point.
Step 2007, record, storage temperature-deviation relation.
All test temperature points of inductive output device 3 and the deviation under each test temperature point are recorded
And the relation table of temperature-deviation of the inductive output device 3 is formed, and the record sheet of the temperature-deviation is stored in prison
Control in main frame, for transferring.
Specific work process and operation principle are as follows：
Installation drilling 4 is opened up by rig first in coal and rock 1 to be measured, and by mounting rod by inductive output device 3
The inner terminal of installation drilling 4 is put into, then signal wire 6 is drawn and signal wire protection pipe 5 is installed, is filled out in most backward installation drilling
Concrete is filled, forms the Concrete Filled 2 of the outlet of inductive output device 3, completes the fixation of inductive output device 3.
When carrying out the stress monitoring of actual coal and rock 1, the stress of coal and rock 1 is applied to sensing by Concrete Filled 2
In output device 3 in stress induction module 12, and perceived by the stress cover 15 of stress induction module 12, stress cover 15 further will
Stress is applied on the piezoelectric transducer 16 in stress induction module 12.
After the stress of piezoelectric transducer 16, X in it is to piezoelectric ceramic piece 1601, Y-direction piezoelectric ceramic piece 1602 and Z-direction pressure
Electroceramics piece 1603 experiences the stressing conditions of X-direction, Y-direction and Z-direction respectively, and by pressure signal with the shape of electric signal
Formula is exported.When the electric signal of different directions is through being uploaded to monitoring master after signal wire 6, data collecting instrument 7, industrial looped network 8
Machine.While monitoring host computer obtains the stress signal that stress induction module 12 is sent into, monitoring host computer obtains inductive output simultaneously
The temperature signal that temperature compensation module 11 is sent into device 3, monitoring host computer is according to the temperature of the inductive output device 3 pre-deposited
The data of the relation table of degree-deviation, inductive output 3 deviation at such a temperature of device is obtained, and to stress induction module
The stress data of 12 X-directions being sent into, Y-direction and Z-direction compensates and corrects, and obtains the defeated of the reality of stress induction module 12
Go out value.Then monitoring host computer is calculated according to the stressing conditions in three directions, and its size and Orientation made a concerted effort is calculated, from
And the situation of stress in coal and rock 1 is calculated, the convenient analysis for carrying out the stress situation of coal and rock 1.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (5)
1. underground coal and rock space built-in type three-dimensional stress monitoring system, it is characterised in that：Including being fixed on coal and rock（1）In
Inductive output device（3）, inductive output device（3）Include stress induction module（12）, in stress induction module（12）In set
It is equipped with for coal and rock（1）The stress mornitoring unit that three-dimensional stress is detected, the output signal of stress mornitoring unit is by believing
Number line（6）Draw；
Described stress induction module（12）Including piezoelectric ceramics fixed seat（17）, piezoelectric ceramics fixed seat（17）Top set
There is platform, stress mornitoring unit is fixed on the platform, and stress mornitoring unit protrudes from inductive output device（3）Shell body
（13）Set；
Described stress mornitoring unit includes piezoelectric transducer（16）And stress cover（15）, piezoelectric transducer（16）It is fixed on pressure
Electroceramics fixed seat（17）On the platform at top；
Stress cover（15）It is spiral-lock in piezoelectric transducer（16）The arc at top, its outer surface protrude from inductive output device
（3）Shell body（13）, at the top of its medial surface and piezoelectric transducer（16）Upper surface fit；
Described piezoelectric transducer（16）Including three groups of piezoelectric ceramic pieces stacked：X is to piezoelectric ceramic piece（1601）, Y-direction piezoelectricity
Potsherd（1602）With Z-direction piezoelectric ceramic piece（1603）；
Described inductive output device（3）Also include shell body（13）, described stress induction module（12）Positioned at shell body
（13）It is interior and protrude from shell body（13）Surface set, in shell body（13）In be additionally provided with for sensing coal and rock（1）Temperature
The temperature compensation module of degree（11）, temperature compensation module（11）To stress induction module（12）Output compensates, temperature-compensating
Module（11）Output signal by signal wire（6）Draw；
Described temperature compensation module（11）Including temperature sensor fixed seat（20）And by temperature sensor fixed seat
（20）Fixed temperature sensor（22）, temperature sensor（22）With stress induction module（12）Fitting.
2. built-in type three-dimensional stress monitoring system in underground coal and rock space according to claim 1, it is characterised in that：It is described
Shell body（13）To be cylindric, the forward and backward both ends inside it are also respectively provided with positioning end block（9）With end fixed seat
（14）, signal wire（6）Self-induction output device（3）Draw end；In shell body（13）With coal and rock（1）Between be filled with coagulation
Soil filling（2）.
3. the underground coal realized using the underground coal and rock space built-in type three-dimensional stress monitoring system described in claim 1 or 2
Rock mass space built-in type three-dimensional stress monitoring method, it is characterised in that：Including stress monitoring flow and stress monitoring flow it
The temperature-compensating flow of preceding progress.
4. built-in type three-dimensional stress monitoring method in underground coal and rock space according to claim 3, it is characterised in that：It is described
Stress monitoring flow, comprise the following steps：
Step a1, determine coal and rock to be measured（1）, and by inductive output device（3）It is put into and is opened in coal and rock（1）Drilling in；
Step a2, by inductive output device（3）Signal wire（6）Drawn from drilling；
Step a3, by inductive output device（3）Data pass through signal wire（6）Lead in monitoring host computer；
Step a4, by monitoring host computer to inductive output device（3）The data of output are analyzed and temperature-compensating, to coal and rock
（1）Stress situation judged.
5. built-in type three-dimensional stress monitoring method in underground coal and rock space according to claim 4, it is characterised in that：It is described
Temperature-compensating flow, comprise the following steps：
Step b1, according to inductive output device（3）Working environment, it is determined that need carry out temperature test some test temperatures
Point；
Step b2, by inductive output device（3）It is placed under test temperature point, and records inductive output device in real time（3）Testing
Output valve under temperature spot；
Step b3, judge inductive output device（3）Whether the output valve under the test temperature point is stablized, and is performed if stable
Step b4, unstable rule return to step b2；
Step b4, by inductive output device（3）Output valve as inductive output device（3）Deviation at such a temperature, and
Record the test temperature point corresponding to the deviation；
Step b5, if completed the temperature test under all test temperature points, if completed, step b6 has been performed, if still
Do not complete, return to step b2, carry out the temperature-compensating test of next test temperature point；
Step b6, by inductive output device（3）All test temperature points and the deviation under each test temperature point enter
Row records and forms the inductive output device（3）Temperature-deviation relation table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511003848.0A CN105352635B (en) | 2015-12-29 | 2015-12-29 | Underground coal and rock space built-in type three-dimensional stress monitoring system and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511003848.0A CN105352635B (en) | 2015-12-29 | 2015-12-29 | Underground coal and rock space built-in type three-dimensional stress monitoring system and monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105352635A CN105352635A (en) | 2016-02-24 |
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| CN106846839A (en) * | 2017-04-18 | 2017-06-13 | 哈尔滨理工大学 | A kind of Novel traffic light automatic control system |
| CN107389247A (en) * | 2017-08-23 | 2017-11-24 | 晋能集团有限公司 | A kind of mining stress of coal pillar meter |
| CN107389235A (en) * | 2017-08-23 | 2017-11-24 | 晋能集团有限公司 | A kind of stress of coal pillar sensor |
| CN108007775A (en) * | 2017-11-21 | 2018-05-08 | 中国矿业大学 | Subterranean strata strain monitoring system |
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| DE4129701C2 (en) * | 1991-09-06 | 1994-07-28 | Halil Ulusar Dr Akbay | Measuring method for measuring mechanical stresses and transducers for carrying out the method |
| CN202033140U (en) * | 2011-03-23 | 2011-11-09 | 闫慧 | Three dimensional stress collector |
| CN202166495U (en) * | 2011-08-08 | 2012-03-14 | 大连理工大学 | Embedded concrete rod member power damage three-dimensional stress sensor |
| US9027411B2 (en) * | 2012-04-03 | 2015-05-12 | Public Interest Incorporated Foundations Association For The Development Of Earthquake Prediction | Stress and strain sensing device |
| CN104458073A (en) * | 2013-09-18 | 2015-03-25 | 长江大学 | Implantable concrete three-dimensional space stress monitoring sensor |
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