CN206627104U - A kind of goaf top plate multi-point displacement synchronous measuring apparatus - Google Patents
A kind of goaf top plate multi-point displacement synchronous measuring apparatus Download PDFInfo
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- CN206627104U CN206627104U CN201720372883.8U CN201720372883U CN206627104U CN 206627104 U CN206627104 U CN 206627104U CN 201720372883 U CN201720372883 U CN 201720372883U CN 206627104 U CN206627104 U CN 206627104U
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- inner cylinder
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Abstract
The utility model discloses a kind of goaf top plate multi-point displacement synchronous measuring apparatus, including housing, anchor fluke, steel wire rope, the grating rule displacement sensor of detection top plate sedimentation, some grating rule displacement sensors for detecting overlying strata deep displacement, wireless communication module and resilient mounting；The grating emitting head and scale grating of the grating rule displacement sensor of the detection top plate sedimentation are individually fixed in inner tank theca and protection cylinder inwall；The grating emitting head connecting steel wire ropes of the grating rule displacement sensor of the detection overlying strata deep displacement, scale grating are fixed on inner cylinder inwall；Institute's displacement sensors are by wireless communication module to Receiving Host output signal.The utility model accurately calculates top board surface settling amount and overlying strata deep displacement simultaneously using the change in displacement of each basic point of goaf top plate, and realizes data transfer by wireless-transmission network and Ethernet, without burying transmission line in the complex environment in goaf.
Description
Technical field
It the utility model is related to coal mine goaf top plate STABILITY MONITORING field, more particularly to a kind of filling mining goaf
Top plate settles and overlying strata deep displacement synchronous measuring apparatus and measuring method.
Background technology
During seam mining, due to stress release or other mining influences, goaf top plate can be produced mobile and collapsed
Emit, influence safety in production and stratum (table) environment；In order to prevent top plate produces movement and collapsed from emitting, current method is to be formed
Goaf in filled in time with obturation, reach roof supporting, reduce being caving and deform of top plate, mitigate face pressure,
Reduce the purpose of the deformation and failure degree of overlying strata.Research to goaf top plate and the characteristics of motion of overlying strata, it is filling mining
The key of technology development.
The characteristics of motion of research goaf top plate and overlying strata at present, need to be evaluated by the method for field monitoring.Wherein push up
Plate surface displacement and overlying strata deep displacement are two important indicators.
Installation set cartridge type monitoring device measures between goaf top plate settling amount generally use roof and floor.As Chinese patent discloses
Number CN204286286U discloses a kind of obturation displacement monitor, and its operation principle is：It is fixed on the interior of goaf top plate
Cylinder is connected by tape with the detection assembly being fixed in outer barrel, and flexible by tape measures top plate settling amount.The device is only
Goaf top plate surface settlement amount can be measured, does not have the function of measurement overlying strata deep displacement, measurement data can not be comprehensively anti-
Reflect movement rule；Meanwhile the device needs to bury transmission line in bashing, embedded process is complicated and is applied
Worker person brings potential safety hazard.
China Patent Publication No. CN203224223U is disclosed a kind of to be enclosed based on displacement transducer with the detection being wirelessly transferred
The device of rock absciss layer, its operation principle are：Anchorage head is fixed in the rock stratum of different depth, when country rock produces absciss layer, anchor
Gu the movement of head opposite sets produces displacement and drives displacement transducer movement, and is real-time transmitted to reception master by wireless communication module
Machine.The device is installed on top board surface, due to not having bottom plate basic point, can not measure top board surface settling amount, can only measure rock stratum
Between relative displacement, i.e. absciss layer distance.
The e measurement technology that above-mentioned two document is recorded only has simple function, can be with synchro measure there presently does not exist one kind
The device and application method of goaf top plate surface settlement and overlying strata deep displacement.
Utility model content
In order to solve above-mentioned problems of the prior art, the utility model provides a kind of goaf top plate multi-point
Synchronous measuring apparatus is moved, the present apparatus realizes measurement function using grating scale high accuracy displacement sensor, not only can simultaneously measure and adopt
Dead zone top plate surface displacement and overlying strata deep multi-point displacement, and it is easy to operate, and accurately and reliably, Monitoring Data passes through wireless data
Transmission, without the complex process of goaf buried line, avoids long range transmission line destructible and the safety of workmen
Potential problem.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of goaf top plate multi-point displacement synchronous measuring apparatus, it is characterised in that it is by goaf top plate settlement measurement
Partly, set overlying strata deep displacement measurement part and housing more forms.
Described housing is a tubular structure, main to include being used to settle mobile inner cylinder with goaf top plate and being used for
Protection and the protection cylinder of support inner cylinder, protection cylinder bottom are fixed on base, and protection barrel chamber inner bottom part is mounted with balancing spring, puts down
Weighing apparatus spring top withstands on inner cylinder bottom, is provided with end cap at the top of inner cylinder, it is desirable to which balancing spring is constantly in compressive state, inner cylinder is begun
End and top plate contact, synchronizing moving occurs in protection cylinder with top plate；Sealing ring is provided between inner cylinder and protection cylinder.
Described top plate settling amount measurement part, is to be fixed with first grating scale displacement transducer in protection barrel chamber inwall,
First grating scale displacement transducer is used to detect goaf top plate sedimentation deformation；The grating reading of first grating scale displacement transducer
Head is fixed on that section of inner tank theca being in protection barrel chamber, and the scale grating of first grating scale displacement transducer is fixed on protection
Cylinder inwall；First grating scale displacement transducer bottom is connected with the first wireless communication module, and the first wireless communication module is by first
Grating scale displacement transducer signal is converted to digital quantity and transmitted to Receiving Host；
Described overlying strata deep displacement measurement part, is to be fixed with second grating scale displacement sensing in interior barrel chamber inwall
Device, second grating scale displacement transducer are used to detect overlying strata deep displacement；The grating reading head of second grating scale displacement transducer
It is connected with steel wire rope, the scale grating of second grating scale displacement transducer is fixed on inner cylinder inwall, with inner cylinder movement and light
Grid reading head relatively moves；Second grating scale displacement transducer bottom is connected with the second wireless communication module；In inner cylinder
Be fixed with steel wire rope resilient mounting on wall, resilient mounting is in below the second wireless communication module, the steel wire rope of resilient mounting to
Pull up out and reconnect an anchor fluke for being used to determine measurement basic point after passing freely through inner cylinder end cap.
Further, the electric signal analysis of sensor is converted into digital quantity by the first and second wireless communication modules, is passed through
The mode being wirelessly transferred is sent to Receiving Host.
Further, Receiving Host will be transferred to reception eventually after the data processing received by way of Ethernet transmission
End.
Further, inner cylinder is connected with top cover by trip bolt.
Further, resilient mounting is fixed on inner cylinder intracavitary by trip bolt.
Compressive state is kept in order to ensure spring when normal, is provided with positioning screw on protection barrel, positioning screw penetrates
Protection barrel withstands on inner tank theca.
The method for realizing top plate settling amount and overlying strata displacement synchro measure using said apparatus, is comprised the following steps that：
The first step：Drill through drilling
Before goaf filling, vertical drilling is drilled through in tested point top plate, hole depth is true according to overlying strata situation and detection requirement
It is fixed；
Second step：Erecting device
About 1m is cleaned out in goaf area to be monitored2Working space, by goaf top plate multi-point displacement synchro measure fill
Storing is placed in area's bottom plate to be measured, pulls out the steel wire rope of all overlying strata deep displacement measurement parts, by the anchor fluke of steel wire rope one by one
Drilling is stretched into, is fixed on each measuring point of bore inner；
3rd step：Fixing device
Positioning screw is unclamped, inner cylinder is lifted, inner cylinder end cap is contacted with goaf top plate, then consolidate base by crab-bolt
Due on gob floor；
4th step：Determine top plate settling amount and overlying strata displacement
If the first grating scale displacement transducer reading that top board surface sedimentation is detected under original state is l0, it is connected with anchor fluke
Multiple second grating scale displacement transducer readings be respectively l1,l2,…ln, the first grating scale displacement transducer reading after measurement
Number is l0', multiple second grating scale displacement transducer readings are respectively l1',l2',…ln', then j-th of anchor fluke and k-th of anchor fluke
Overlying strata separation layer distance h between fixing pointjk=| (lj'-lj)-(lk'-lk) |, top plate to the overlying strata position between j-th of anchor fluke fixing point
Shifting amount is hj0=(lj'-lj)-(l0'-l0), top plate settling amount L=l0'-l0。
Above-mentioned n represents the number of second grating scale displacement transducer, and j, k represent two anchors corresponding to two of which sensor
Pawl.
Illustrate its good effect below according to monitoring principle of the present utility model
1st, when surveying top plate sedimentation, the relative changing of the relative positions occurs the utility model for inner cylinder and protection cylinder, that is, is separately fixed at
The changing of the relative positions occurs for first grating scale displacement transducer grating reading head and scale grating on two barrels, and the distance of the changing of the relative positions is exactly to push up
The displacement of plate sedimentation.Under the top plate sink during, steel wire rope is in tension all the time, if the fixing point and top plate of anchor fluke it
Between rock mass sink simultaneously without absciss layer occurs, rope capacity is constant；If the rock mass hair between anchor fluke fixing point and top plate
Raw absciss layer, rope capacity are elongated, because the grating ruler reading head of second grating scale displacement transducer is fixed on a steel cord,
Scale grating is fixed on inner cylinder inwall, the relative changing of the relative positions distance reflection overlying strata displacement of steel wire rope and inner cylinder.So as to realize top plate
Two kinds of data of settling amount and overlying strata displacement by a table apparatus synchro measure, to overburden of the goaf move and advise by the synchrodata measured
Rule has apparent comprehensive cognition.
2nd, Monitoring Data of the present utility model is transmitted by way of wireless and Ethernet, without in goaf buried line
Complex process, while the problem of avoid long range transmission line destructible.Monitoring device reliable operation, service life obtain
Effectively extend.
3rd, displacement measurement of the present utility model uses grating scale high accuracy displacement sensor, and data are accurately and reliably.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure diagram of the utility model embodiment, to set a set of overlying strata deep displacement in inner cylinder in figure
Exemplified by measurement part；
Fig. 2 is monitoring network schematic diagram of the present utility model；
Fig. 3 is grating scale displacement sensor structure schematic diagram of the present utility model, with second grating scale displacement sensing in figure
Exemplified by the arrangement of device.
In figure：1- bases；2- end caps；3- protects cylinder；4- inner cylinders；5- balancing springs；6- steel wire rope resilient mountings；7- first
Grating rule displacement sensor；The wireless communication modules of 8- first；9- second grating scale displacement transducers；10- steel wire ropes；11- anchor flukes；
The wireless communication modules of 12- second；13- crab-bolts；14- Receiving Hosts；15- receiving terminals；16- second grating scale displacement transducers
Scale grating；The grating reading head of 17- second grating scale displacement transducers.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clear, complete description.
A kind of goaf top plate multi-point displacement synchronous measuring apparatus as shown in Figure 1, 2, by goaf top plate settlement measurement
Partly, a set of overlying strata deep displacement measurement part and housing composition.
Described housing is a tubular structure, including inner cylinder 4 and protection cylinder 3, inner cylinder 4 are used to settle with goaf top plate
Mobile, protection cylinder 3 is used to protecting and supporting inner cylinder 4；Protection cylinder 3 bottom is fixed on base 1, and base 1 passes through crab-bolt during use
14 are fixed on bottom plate, and protection cylinder 3 intracavitary bottom is mounted with balancing spring 5, and the top of balancing spring 5 withstands on the bottom of inner cylinder 4, inner cylinder
4 tops are provided with end cap 2 by trip bolt, it is desirable to which balancing spring 5 is constantly in compressive state, in use, the end cap 2 of inner cylinder 4
All the time with top plate contact, synchronizing moving occurs in protection cylinder 3 with top plate；Sealing ring is provided between inner cylinder 4 and protection cylinder 3.Protecting
The wall of casing 3 is provided with positioning screw (being not drawn into figure), and the wall of positioning screw pierce through the protection cylinder 3 withstands on the outer wall of inner cylinder 4.
Described top plate settling amount measurement part, is to be fixed with first grating scale displacement sensing in the protection barrel chamber inwall of cylinder 3
Device 7, first grating scale displacement transducer 7 are used to detect goaf top plate sedimentation deformation；The light of first grating scale displacement transducer 7
Grid reading head is fixed on the outer wall of that section of inner cylinder 4 for being in the protection intracavitary of cylinder 3, the scale grating of first grating scale displacement transducer 7
It is fixed on the protection inwall of cylinder 3；The bottom of first grating scale displacement transducer 7 is connected with the first wireless communication module 8, the first channel radio
The electric signal of first grating scale displacement transducer 7 is converted to digital quantity and transmitted by way of being wirelessly transferred to connecing by letter module 8
Receive main frame 14；Receiving Host 14 will be transferred to receiving terminal 15 after the data processing received by way of Ethernet transmission.
Described overlying strata deep displacement measurement part, is to be fixed with second grating scale displacement sensing in the cavity wall of inner cylinder 4
Device 9, second grating scale displacement transducer 9 are used to detect overlying strata deep displacement；The grating reading of second grating scale displacement transducer 9
Head is connected with steel wire rope 10, and the scale grating of second grating scale displacement transducer 9 is fixed on the inwall of inner cylinder 4, is moved with inner cylinder 4
It is dynamic to be relatively moved with grating reading head；The bottom of second grating scale displacement transducer 9 is connected with the second wireless communication module 12；
Steel wire rope resilient mounting 6 is fixed with by trip bolt on the inwall of inner cylinder 4, steel wire rope resilient mounting 6 is in the second channel radio
Believe the lower section of module 12, the electric signal analysis of second grating scale displacement transducer 9 is converted into numeral by the second wireless communication module 12
Amount, Ethernet will be passed through after the data processing received by being sent by way of being wirelessly transferred to Receiving Host 14, Receiving Host 14
The mode of transmission is transferred to receiving terminal 15；Wire hole is provided with end cap 2, the steel wire rope 10 of resilient mounting 6 is drawn upwardly out
An anchor fluke 11 for being used to determine measurement basic point is reconnected after passing freely through wire hole.
Fig. 3 is the arrangement of second grating scale displacement transducer 9 of the present utility model, it can be seen that second
Grating rule displacement sensor 9 includes grating reading head 17 and scale grating 16, and scale grating 16 is fixed on the inwall of inner cylinder 4, with interior
The movement of cylinder 4 and the grating reading head 17 of second grating scale displacement transducer relatively move, second grating scale displacement transducer
Grating reading head 17 be connected with steel wire rope 10.
The method for realizing top plate settling amount and overlying strata displacement synchro measure using the utility model said apparatus, specific step
It is rapid as follows：
The first step：Before goaf filling, vertical drilling is drilled through in tested point top plate, hole depth is according to overlying strata situation and monitoring
It is required that determine；
Second step：About 1m is cleaned out in goaf area to be monitored2Working space, the present apparatus is positioned over area bottom to be measured
Plate, pulls out the steel wire rope 10 of all overlying strata deep displacement measurement parts, and the anchor fluke 11 of steel wire rope 10 is stretched into drilling one by one,
It is fixed on each measuring point of bore inner；
3rd step：Positioning screw is unclamped, inner cylinder 4 is lifted, the end cap 2 of inner cylinder 4 is contacted with goaf top plate, then by base
1 is fixed on gob floor by crab-bolt 13；
4th step：If the reading of first grating scale displacement transducer 7 that top board surface sedimentation is detected under original state is l0, even
The multiple readings of second grating scale displacement transducer 9 for being connected to anchor fluke are respectively l1,l2,…ln, the first grating scale displacement after measurement
The reading of sensor 7 is l0', second grating scale displacement transducer reading 9 is respectively l1',l2',…ln', then j-th of anchor fluke and
Overlying strata separation layer distance h between k anchor fluke fixing pointjk=| (lj'-lj)-(lk'-lk) |, top plate is between j-th of anchor fluke fixing point
Overlying strata displacement be hj0=(lj'-lj)-(l0'-l0), top plate settling amount L=l0'-l0。
Above-mentioned n represents the number of second grating scale displacement transducer 9, and j, k represent two of which second grating scale displacement biography
Two anchor flukes corresponding to sensor 9.
Claims (4)
1. a kind of goaf top plate multi-point displacement synchronous measuring apparatus, it is characterised in that it is by goaf top plate settlement measurement portion
Divide, more set overlying strata deep displacement measurement parts and housing form；
Described housing is a tubular structure, main to include being used to settle mobile inner cylinder and for protecting with goaf top plate
With the protection cylinder of support inner cylinder, protection cylinder bottom is fixed on base, and protection barrel chamber inner bottom part is mounted with balancing spring, equilibrium bomb
Inner cylinder bottom is withstood at the top of spring, end cap is provided with the top of inner cylinder, it is desirable to balancing spring is constantly in compressive state, make inner cylinder all the time with
Top plate contact, synchronizing moving occurs in protection cylinder with top plate；Sealing ring is provided between inner cylinder and protection cylinder；
Described top plate settling amount measurement part, it is to be fixed with first grating scale displacement transducer in protection barrel chamber inwall, first
Grating rule displacement sensor is used to detect goaf top plate sedimentation deformation；The grating reading head of first grating scale displacement transducer is consolidated
Due to that section of inner tank theca being in protection barrel chamber, the scale grating of first grating scale displacement transducer is fixed in protection cylinder
Wall；First grating scale displacement transducer bottom is connected with the first wireless communication module, and the first wireless communication module is by the first grating
Rule displacement sensor signal is converted to digital quantity and transmitted to Receiving Host；
Described overlying strata deep displacement measurement part, is to be fixed with second grating scale displacement transducer in interior barrel chamber inwall, the
Two grating rule displacement sensors are used to detect overlying strata deep displacement；The grating reading head and steel wire of second grating scale displacement transducer
Rope is connected, and the scale grating of second grating scale displacement transducer is fixed on inner cylinder inwall, with inner cylinder movement and grating reading
Hair life relative movement；Second grating scale displacement transducer bottom is connected with the second wireless communication module；It is solid on inner cylinder inwall
Surely there is steel wire rope resilient mounting, resilient mounting is in below the second wireless communication module, and the steel wire rope of resilient mounting pulls out upwards
An anchor fluke for being used to determine measurement basic point is reconnected after passing freely through inner cylinder end cap.
2. goaf top plate multi-point displacement synchronous measuring apparatus as claimed in claim 1, it is characterised in that inner cylinder leads to top cover
Cross fastening mode connects for screw.
3. goaf top plate multi-point displacement synchronous measuring apparatus as claimed in claim 1, it is characterised in that resilient mounting passes through
Trip bolt is fixed on inner cylinder intracavitary.
4. goaf top plate multi-point displacement synchronous measuring apparatus as claimed in claim 1, it is characterised in that on protection barrel
Provided with positioning screw, positioning screw pierce through the protection barrel withstands on inner tank theca.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720372883.8U CN206627104U (en) | 2017-04-11 | 2017-04-11 | A kind of goaf top plate multi-point displacement synchronous measuring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720372883.8U CN206627104U (en) | 2017-04-11 | 2017-04-11 | A kind of goaf top plate multi-point displacement synchronous measuring apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908033A (en) * | 2017-04-11 | 2017-06-30 | 山东科技大学 | A kind of goaf top plate multi-point displacement synchronous measuring apparatus and its measuring method |
| CN108590766A (en) * | 2018-04-20 | 2018-09-28 | 程刚 | A kind of depression of coal mine gob overlying warp damage rock stratum monitors system |
| CN114646294A (en) * | 2022-03-28 | 2022-06-21 | 中国石油化工股份有限公司华北油气分公司 | Coal mine goaf ground settlement detection device and detection method |
-
2017
- 2017-04-11 CN CN201720372883.8U patent/CN206627104U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908033A (en) * | 2017-04-11 | 2017-06-30 | 山东科技大学 | A kind of goaf top plate multi-point displacement synchronous measuring apparatus and its measuring method |
| CN106908033B (en) * | 2017-04-11 | 2022-10-11 | 山东科技大学 | Synchronous measuring device and method for multipoint displacement of top plate of goaf |
| CN108590766A (en) * | 2018-04-20 | 2018-09-28 | 程刚 | A kind of depression of coal mine gob overlying warp damage rock stratum monitors system |
| CN114646294A (en) * | 2022-03-28 | 2022-06-21 | 中国石油化工股份有限公司华北油气分公司 | Coal mine goaf ground settlement detection device and detection method |
| CN114646294B (en) * | 2022-03-28 | 2024-02-23 | 中国石油化工股份有限公司华北油气分公司 | Coal mine goaf ground subsidence detection device and detection method |
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