CN205785167U - A kind of measurement apparatus of protected seam dilatancy amount - Google Patents
A kind of measurement apparatus of protected seam dilatancy amount Download PDFInfo
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- CN205785167U CN205785167U CN201620748462.6U CN201620748462U CN205785167U CN 205785167 U CN205785167 U CN 205785167U CN 201620748462 U CN201620748462 U CN 201620748462U CN 205785167 U CN205785167 U CN 205785167U
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- pallet
- hollow stem
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- spring
- measurement apparatus
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Abstract
The utility model discloses the measurement apparatus of a kind of protected seam dilatancy amount, including top board displacement measuring device and floor shifting measurement apparatus；Top board displacement measuring device includes the little pallet in top, the little pallet in bottom, the first hollow stem, the first spring, first data transmission line, the first displacement transducer and the first digital display meter；Floor shifting measurement apparatus includes the big pallet in top, the big pallet in bottom, the second hollow stem, the second spring, the second data line, second displacement sensor and the second digital display meter；The middle part of the big pallet of the big pallet in described top and bottom is provided with through hole, and described first hollow stem is nested in the second hollow stem after passing sequentially through the through hole in the middle part of the big pallet of the big pallet in top and bottom.This utility model can overcome boring unstable and the unstable factor such as collapse hole, and spring can be sensitive captures all changes of protected seam dilatancy during protective coat extracted so that in time, accurately, certainty of measurement is higher for Monitoring Data.
Description
Technical field
This utility model relates to a kind of deformation measuring device, particularly relates to the measurement dress of a kind of protected seam dilatancy amount
Put, belong to colliery gas prevention and highlight safe Treatment process field.
Background technology
" safety regulations in coal mine " clear stipulaties: " when coal and gas outburst mine working seam group, it is necessary to first exploit guarantor
Sheath.After exploitation protective layer, the region being protected in protected seam carries out mining work by without dangerous seam with potential, is not subject to
Region to protection, it is necessary to take to prevent outburst danger measure ".Exploitation protective layer is preventing and treating coal and gas prominent maximally effective
Planting regional outburst prevention measures, the projecting mine in coal seam group mining condition is widely applied.It is in the nature: protective coat extracted
Country rock release afterwards produces dilatancy, produces gas " incremental effect ", and breathability strengthens, for the pressure relief gas pumping of protected seam
Adopt and create favorable conditions.
" preventing and treating coal and gas prominent regulation " the 40th article of middle clear stipulaties: projecting mine exploits certain protective layer first
Time, it should protected seam is carried out the actual investigation of region measure effect inspection and protection domain.If the maximum of protected seam
Dilatancy amount is more than 3/1000ths, then check and investigate result and be applicable to the same protective layer in other regions and protected
Layer；Otherwise, it should each anticipated protected area is carried out region measure effect inspection.Visible, protected seam dilatancy
Measure the important indicator anti-reflection as evaluating protective coat extracted release, play an important role in protective coat extracted.
At present, the dilatancy of field observation protected seam mainly uses deep base point method observation, and its principle is: arranges and bores
Hole passes the top of protected seam, base plate, arranges measuring point in roof and floor, by the relative displacement between observation top, floor station
And then determine the dilatancy amount of protected seam.Utility model patent CN 104482914 A (201410844168.0) is a kind of remote
Distance protected seam dilatancy amount determining device, it includes that roof basic point holder, top board basic point measure line, connection
Pipe, seat earth basic point holder, base plate basic point measure line, protect sleeve pipe, telescopic joint head.Top, coal seam, backplane basic point
Holder, the two is connected by connecting tube grafting, the open-shaped state of body surrounding wing, and then enters protective layer dilatancy amount
Row measures；Utility model patent CN 104344785 A (201410637115.1) coal seam subtle flow amount automatic testing equipment leads to
Crossing after utilizing coal seam to deform, stainless steel tube and steel wire rope produce relative displacement therewith, thus drive rule or digital display meter
Mobile, the deflection of protected seam after protective coat extracted is measured.
Being not difficult to find out, above-mentioned patent all can record protected seam dilatancy, but in practical operation, owing to layer is worn in boring
More, relatively big by mining influence, especially protected seam roof and floor lithologic is the softest, and boring is unstable, hole wall easily peels off very
To collapse hole, cause test result error relatively big, mistake even occurs, the exploitation safety of serious threat to protected seam.And based on
When the ultrasonic detectable signal involving electromagnetic radiation is observed, detectable signal is disturbed more, is more suitable for the district to relief range
Territory detects, and for the detection of protected seam deformed dilation, difficulty is big, accuracy is low, and system stability in the large is poor, labor intensive material resources
Very big and relatively costly, it is not easy to large-scale promotion.
Utility model content
In view of this, the purpose of this utility model is to provide the measurement apparatus of a kind of protected seam dilatancy amount, with reality
The now accurate detection to protected seam dilatancy amount.
The measurement apparatus of this utility model a kind of protected seam dilatancy amount, including top board displacement measuring device and base plate
Displacement measuring device；
Described top board displacement measuring device include the little pallet in top, the little pallet in bottom, the first hollow stem, the first spring,
One data line, the first displacement transducer and the first digital display meter；The little pallet in connection top, upper end of described first spring, first
The lower end of spring connects the little pallet in bottom by the first displacement transducer, and described first displacement transducer is fixed on the little pallet in bottom
End face on, the bottom surface of the upper end pallet little with bottom of described first hollow stem is welded；
Described floor shifting measurement apparatus include the big pallet in top, the big pallet in bottom, the second hollow stem, the second spring,
Two data lines, second displacement sensor and the second digital display meter, the big pallet in connection top, upper end of described second spring, second
The lower end of spring connects the big pallet in bottom by second displacement sensor, and described second displacement sensor is fixed on the big pallet in bottom
End face on, the upper end of described second hollow stem is welded on the bottom surface of the big pallet in bottom；
The middle part of the big pallet of the big pallet in described top and bottom is provided with through hole, and described first hollow stem passes sequentially through top
It is nested in the second hollow stem after through hole in the middle part of big pallet and the big pallet in bottom；
One end of described first data wire is connected with the first displacement transducer, and the other end of the first data wire is hollow through first
The endoporus of bar is drawn and is connected with the first digital display meter；
One end of described second data wire is connected with second displacement sensor, and the other end of the second data wire is hollow through second
The endoporus of bar is drawn and is connected with the second digital display meter.
The beneficial effects of the utility model:
1, the measurement apparatus of this utility model protected seam dilatancy amount, during use, first tunnel below protected seam
Utilize more than 80 ° of drilling machine construction inclination angle, the boring of aperture 79mm, drill through coal seam, reach to stop at top board construction, then profit
With rig, boring being carried out ream operation, aperture expansion is to 133mm, and counterbore depth reaches coal seam and base plate intersection stops reaming；
The most first top board displacement measuring device is delivered to top of holing, floor shifting measurement apparatus is delivered to the top of reaming the most again, peace
After dress fixes measurement apparatus, can measure；The measurement apparatus of this utility model protected seam dilatancy amount, its energy gram
The unstable factors such as clothes boring instability and collapse hole, it is more accurate to measure.
2, the measurement apparatus of this utility model protected seam dilatancy amount, it is contemplated that protected seam deformed dilation amount is relatively
Little, by the spring arranged in displacement measuring device can be sensitive capture protected seam dilatancy during protective coat extracted
All changes so that in time, accurately, precision is higher for Monitoring Data.
3, the measurement apparatus of this utility model protected seam dilatancy amount, the measurement apparatus overall structure letter that it uses
Singly, easily operating, strong adaptability, interference factor are few, low cost, applicable large-scale promotion.
Accompanying drawing explanation
Fig. 1 is the structural representation of the measurement apparatus of this utility model protected seam dilatancy amount；
In figure, the little pallet in 1-top, the little pallet in 2-bottom, 3-the first hollow stem, 4-the first spring, 5-first data transmission
Line, 6-the first displacement transducer, 7-the first digital display meter, the big pallet in 8-top, the big pallet in 9-bottom, 10-the second hollow stem, 11-
Second spring, 12-the second data line, 13-second displacement sensor, 14-the second digital display meter, 15-boring, 16-coal seam,
17-top board, 18-base plate, 19-polyurethane.
Detailed description of the invention
With embodiment, this utility model is further described below in conjunction with the accompanying drawings.
As it can be seen, the measurement apparatus of the present embodiment protected seam dilatancy amount, including top board displacement measuring device and
Floor shifting measurement apparatus；
Described top board displacement measuring device includes the little pallet in top 1, the little pallet in bottom the 2, first hollow stem the 3, first spring
4, first data transmission line the 5, first displacement transducer 6 and the first digital display meter 7；The little torr in connection top, upper end of described first spring
Dish, the lower end of the first spring connects the little pallet in bottom by the first displacement transducer, and described first displacement transducer is fixed on down
On the end face of the little pallet in portion, the bottom surface of the upper end pallet little with bottom of described first hollow stem is welded；
Described floor shifting measurement apparatus includes the big pallet in top 8, the big pallet in bottom the 9, second hollow stem the 10, second spring
11, the second data line 12, second displacement sensor 13 and the second digital display meter 14, the connection top, upper end of described second spring
Big pallet, the lower end of the second spring connects the big pallet in bottom by second displacement sensor, and described second displacement sensor is fixed
On the end face of the big pallet in bottom, the upper end of described second hollow stem is welded on the bottom surface of the big pallet in bottom；
The middle part of the big pallet of the big pallet in described top and bottom is provided with through hole, and described first hollow stem passes sequentially through top
It is nested in the second hollow stem after through hole in the middle part of big pallet and the big pallet in bottom；
One end of described first data wire is connected with the first displacement transducer, and the other end of the first data wire is hollow through first
The endoporus of bar is drawn and is connected with the first digital display meter；
One end of described second data wire is connected with second displacement sensor, and the other end of the second data wire is hollow through second
The endoporus of bar is drawn and is connected with the second digital display meter.
The measurement apparatus of this utility model protected seam dilatancy amount, its use process is as follows:
1), in protected seam bottom select coal rock layer to compose and deposit stable tunnel, utilize more than 80 ° of drilling machine construction inclination angle, hole
The boring of footpath 79mm, boring 15, through coal seam 16, reaches to stop at top board 17 construction；
2), utilizing rig that boring carries out ream operation, aperture is expanded to 133mm, and counterbore depth reaches coal seam and base plate 18
Intersection stops reaming；
3), first by top board displacement measuring device deliver to top of holing, the most again floor shifting measurement apparatus is delivered to reaming
Top；
4) polyurethane 19, is utilized first hollow stem and the second hollow stem to be fixed at drilling orifice；
5), the first displacement transducer and second displacement sensor are calibrated, to the first digital display meter and the second digital display meter
Make zero, record top board displacement measuring device primary data d1With floor shifting measurement apparatus primary data d2；
6), after protective layer work surface pushes through, top board displacement measuring device primary data d is read3Dress is measured with floor shifting
Put primary data d4；
7), the data of twice collection are substituted into formula D=(d4-d2)-(d3-d1), it is calculated protected seam dilatancy
Amount D.
This utility model can overcome the unstable factors such as boring instability and collapse hole, and it is more accurate to measure；And the present embodiment
The measurement apparatus of protected seam dilatancy amount, it is contemplated that protected seam deformed dilation amount is less, by displacement measuring device
The spring arranged can be sensitive capture all changes of protected seam dilatancy during protective coat extracted so that monitoring number
According to timely, accurate, precision is higher；The measurement apparatus of the present embodiment protected seam dilatancy amount further, its overall structure letter
Singly, easily operating, strong adaptability, interference factor are few, low cost, applicable large-scale promotion.
Finally illustrating, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although ginseng
According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, without deviating from objective and the model of technical solutions of the utility model
Enclosing, it all should be contained in the middle of right of the present utility model.
Claims (1)
1. the measurement apparatus of a protected seam dilatancy amount, it is characterised in that: include top board displacement measuring device and base plate
Displacement measuring device；
Described top board displacement measuring device includes the little pallet in top, the little pallet in bottom, the first hollow stem, the first spring, the first number
According to transmission line, the first displacement transducer and the first digital display meter；The little pallet in connection top, upper end of described first spring, the first spring
Lower end connect bottom little pallet by the first displacement transducer, described first displacement transducer is fixed on the top of the little pallet in bottom
On face, the bottom surface of the upper end pallet little with bottom of described first hollow stem is welded；
Described floor shifting measurement apparatus includes the big pallet in top, the big pallet in bottom, the second hollow stem, the second spring, the second number
According to transmission line, second displacement sensor and the second digital display meter, the big pallet in connection top, upper end of described second spring, the second spring
Lower end connect bottom big pallet by second displacement sensor, described second displacement sensor is fixed on the top of the big pallet in bottom
On face, the upper end of described second hollow stem is welded on the bottom surface of the big pallet in bottom；
The middle part of the big pallet of the big pallet in described top and bottom is provided with through hole, and described first hollow stem passes sequentially through the big torr in top
It is nested in the second hollow stem after through hole in the middle part of the big pallet of dish and bottom；
One end of described first data wire is connected with the first displacement transducer, and the other end of the first data wire is through the first hollow stem
Endoporus is drawn and is connected with the first digital display meter；
One end of described second data wire is connected with second displacement sensor, and the other end of the second data wire is through the second hollow stem
Endoporus is drawn and is connected with the second digital display meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748462.6U CN205785167U (en) | 2016-07-15 | 2016-07-15 | A kind of measurement apparatus of protected seam dilatancy amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748462.6U CN205785167U (en) | 2016-07-15 | 2016-07-15 | A kind of measurement apparatus of protected seam dilatancy amount |
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| CN205785167U true CN205785167U (en) | 2016-12-07 |
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| CN201620748462.6U Expired - Fee Related CN205785167U (en) | 2016-07-15 | 2016-07-15 | A kind of measurement apparatus of protected seam dilatancy amount |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107232153A (en) * | 2017-07-28 | 2017-10-10 | 德阳市夏季风渔具有限公司 | Magnetic force triggers auto fishing device |
| WO2022247044A1 (en) * | 2021-05-28 | 2022-12-01 | 中煤科工集团沈阳研究院有限公司 | Liquid injection-type protected layer expansion deformation amount automatic measurement device and use method |
-
2016
- 2016-07-15 CN CN201620748462.6U patent/CN205785167U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107232153A (en) * | 2017-07-28 | 2017-10-10 | 德阳市夏季风渔具有限公司 | Magnetic force triggers auto fishing device |
| WO2022247044A1 (en) * | 2021-05-28 | 2022-12-01 | 中煤科工集团沈阳研究院有限公司 | Liquid injection-type protected layer expansion deformation amount automatic measurement device and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |