CN207675347U - A kind of mining stress of coal pillar meter - Google Patents
A kind of mining stress of coal pillar meter Download PDFInfo
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- CN207675347U CN207675347U CN201721060428.0U CN201721060428U CN207675347U CN 207675347 U CN207675347 U CN 207675347U CN 201721060428 U CN201721060428 U CN 201721060428U CN 207675347 U CN207675347 U CN 207675347U
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Abstract
The utility model discloses a kind of mining stress of coal pillar meters, including stress of coal pillar sensor, mining signal cable and stress of coal pillar instrument, stress of coal pillar instrument is connected by mine cable with stress of coal pillar sensor, stress of coal pillar sensor includes male-tapered casing, inner conical casing, belt stress sensor group and foil resistance piece, male-tapered casing has dilatancy, inner conical casing is set in male-tapered casing, belt stress sensor group is set in inner conical casing, belt stress sensor group includes several monomer annular strain gauges and foil resistance piece, cross location hole is attacked in inner conical casing tail portion, the hollow mounting stem of the built-in mining signal cable of connection.The utility model has dilatancy, and be placed outside coal side, by RS485 interface access industrial looped networks, can be realized in this way positioning and with coal column body flexible contact, make stress of coal pillar sensor entirety stress, realizes to coal column body vertical stress and horizontal stress on-line real time monitoring.
Description
Technical field
The utility model belongs to the technology scope of pit mining mine coal column stress monitoring, and in particular to a kind of and coal column body
Flexible contact, stress of coal pillar sensor entirety stress, to the mining of coal column body vertical stress and horizontal stress on-line real time monitoring
Stress of coal pillar meter.
Background technology
Stress of coal pillar monitoring stability of coal pillar, optimization coal pillar width, roof and floor stress variation, ahead work face pressure and
Stress of coal seam etc. have the function of it is positive, at present there are mainly two types of stress of coal pillar monitoring methods, one be coal column drilling hole stress
Monitoring method is counted, another kind is microseism CT monitoring methods.For coal column borehole stressmeter monitoring method, existing stress of coal pillar meter is main
For three kinds of fluid pressure type, steel chord type and strain-type.Wherein, the stress of coal pillar sensor of fluid pressure type and steel chord type stress of coal pillar meter is
Filling liquid expands pillow formula sensor, is made of boring pressure pillow and oil guide pipe, and internal-filling liquid pressure oil is rested the head on to boring pressure by oil guide pipe,
Coal column body vertical stress is monitored with coal column body flexible contact so that vertical-shaped expansion occurs for boring pressure pillow.Different
It is that fluid pressure type stress of coal pillar meter is to be directly displayed at hydraulic fluid pressure on hydralic pressure gauge by oil guide pipe；Steel chord type stress of coal pillar
Meter is that hydraulic fluid pressure is converted to string wire vibration frequency using pressure-frequency converter, is carried out at digital signal to the frequency
Reason obtains stress of coal pillar.The sensor of strain-type stress of coal pillar meter mostly uses epoxy resin or steel structure casing, built-in resistor piece,
Ring is mutually arranged, coal column vertical stress and the monitoring of horizontal stress two dimension may be implemented, but the sensor can not achieve and be bored with coal column body
Hole flexible contact could acquire coal column body stress signal and by mining letter only when coal column body stress causes drilling collapse hole
Number cable transmission is to stress of coal pillar meter, and the actual loading area of sensor is mostly 2.54 × 2.54mm, and forced area is smaller；
On the other hand, mining
Signal cable bearing capacity is smaller, is less than 12MPa, mining signal cable does not communicate when stress of coal pillar is larger more
Ability.For the defect of existing stress of coal pillar meter, invention it is a kind of with coal column body flexible contact, stress of coal pillar sensor integrally by
Power seems very necessary the mining stress of coal pillar meter of coal column body vertical stress and horizontal stress on-line real time monitoring.
Invention content
The purpose of the utility model is to provide one kind can effectively solve the problem that and coal column body flexible contact, stress of coal pillar sensing
Device entirety stress, to the mining stress of coal pillar meter of coal column body vertical stress and horizontal stress on-line real time monitoring problem.
In order to achieve the above objectives, the utility model uses following solution：A kind of mining stress of coal pillar meter, including coal column
Strain gauge, mining signal cable and stress of coal pillar instrument, stress of coal pillar instrument are sensed by mine cable and stress of coal pillar
Device is connected, and is placed outside coal side, by RS485 interface access industrial looped networks, realizes that stress of coal pillar online data monitors in real time,
It is characterized in that：The stress of coal pillar sensor includes male-tapered casing, inner conical casing, belt stress sensor group and foil
Resistor disc, male-tapered casing are half tile structure, are arranged vertically combine closely above and below, and male-tapered casing has dilatancy, inner conical
Casing is half tile structure, it is left and right it is horizontally disposed combine closely, inner conical casing is set in male-tapered casing, in inner conical casing
Belt stress sensor group is set, and belt stress sensor group includes several uniformly distributed monomer annular strain gauges, in monomer
Foil resistance piece is set between belt stress sensor, and cross location hole is attacked in inner conical casing tail portion, connects hollow mounting stem, empty
Heart mounting rod is steel-tube construction, and header arrangement cross positioning device is connected with inner conical casing tail portion, built in hollow mounting stem
Mining signal cable.
The utility model is that offer is a kind of mining on the basis of existing fluid pressure type, steel chord type and strain-type stress of coal pillar meter
Stress of coal pillar meter is monitored coal column body stress by drilling, effectively solves to sense with coal column body flexible contact, stress of coal pillar
Device entirety stress, to coal column body vertical stress and horizontal stress on-line real time monitoring problem.Its principle is：The utility model is a kind of
Mining stress of coal pillar meter is made of stress of coal pillar sensor, hollow mounting stem, stress of coal pillar instrument etc., (1) stress of coal pillar sensing
Device includes male-tapered casing, inner conical casing, belt stress sensor group and foil resistance piece, male-tapered casing and inner conical set
Pipe is half tile structure, staggeredly 90 ° of arrangements, realizes sensor entirety stress, acquires coal column body vertical stress and horizontal stress, interior
Cross location hole is attacked in taper tail portion, and applying stress by the inside taper of hollow mounting stem makes male-tapered casing expandable,
Realize positioning and with coal column body flexible contact, it is electric that belt stress sensor group be evenly distributed with multiple monomer annular strain gauges and foil
Hinder piece；(2) hollow mounting stem is steel-tube construction, and the long 1m of bar, abutting joint, bearing capacity is more than 60MPa, header arrangement cross
Positioning device is connected with inner conical casing tail portion, mining signal cable built in hollow mounting stem and with stress of coal pillar sensor
Conducting wire is connected；(3) stress of coal pillar instrument is secondary meter, is connected to coal column vertical with stress of coal pillar sensor conductor
Stress and horizontal stress carry out digital processing, have display function on the spot, are placed outside coal side, pass through RS485 interface access industrials
Looped network realizes that stress of coal pillar online data monitors in real time.
Compared with prior art, the utility model has substantive distinguishing features following prominent and significant effect：
1, a kind of mining stress of coal pillar meter of the utility model, stress of coal pillar sensor have dilatancy, coal column may be implemented
On the one hand flexible contact during stress monitoring plays orientation to stress of coal pillar sensor；On the other hand realize that coal column is answered
Force snesor entirety stress monitors coal column body vertical stress, horizontal stress two dimension.
2, a kind of mining stress of coal pillar meter of the utility model, mining signal cable built in hollow mounting stem make built-in mining
Cable bearing capacity increases；Stress of coal pillar instrument is placed outside coal side, by RS485 interface access industrial looped networks, realizes that coal column is answered
Force data on-line real time monitoring.
3, a kind of mining stress of coal pillar meter of the utility model is widely used in stability of coal pillar, optimization coal pillar width, roof and floor
Stress variation, ahead work face pressure and stress of coal seam etc..
Description of the drawings
Fig. 1, the utility model structure diagram.
Fig. 2, the utility model stress of coal pillar sensor structure schematic diagram.
In figure：1, stress of coal pillar sensor 2, hollow mounting stem 3, mining signal cable
4, stress of coal pillar instrument 5, male-tapered casing 6, inner conical casing
7, belt stress sensor group 8, foil resistance piece.
Specific implementation mode
The utility model is further described below in conjunction with attached drawing.
Embodiment 1：
3102 working face haulage gate of the coal seams certain mine 3#, clear span 4.6m, clear height 4.7m, maximum height 5.2m, average Gai Shan
Thickness 232m, coal pillar width 15m, the installation mining stress of coal pillar meter of 2 groups of the utility model at haulage gate opening 170m, every group
5, amount to 10, installation site 1m, 3m, 5m, 7m and 9m, stress of coal pillar instrument 4 is passed by mine cable 3 and stress of coal pillar
Sensor 1 is connected, and is placed outside coal side, by RS485 interface access industrial looped networks, realizes that stress of coal pillar online data is supervised in real time
It surveys.Stress of coal pillar sensor 1 includes male-tapered casing 5, inner conical casing 6, belt stress sensor group 7 and foil resistance piece 8,
Male-tapered casing 5 is half tile structure, upper and lower to arrange, inner conical casing 6 is half tile structure, and left and right arrangement realizes stress of coal pillar
The whole stress of sensor 1, foil resistance piece 8 built in belt stress sensor group 7, to coal column body vertical stress and horizontal stress into
Cross location hole is attacked in row acquisition, 6 tail portion of inner conical casing, and applying stress by 2 inside taper 6 of hollow mounting stem makes outer cone
Shape casing 5 expands, and hollow mounting stem 2 is steel-tube construction, and header arrangement cross positioning device is connected with 6 tail portion of inner conical casing
It connects, mining signal cable 3 built in hollow mounting stem 2.
Experimental monitoring works well, and mining stress of coal pillar meter can realize flexible contact, coal column with haulage gate side coal column
Strain gauge entirety stress, and on-line real time monitoring can be carried out to coal column vertical stress, horizontal stress.
Embodiment 2：
15109 working face haulage gate of the coal seams certain mine 15#, clear span 5.0m, clear height 5.0m, bolt interval 1500 ×
1500mm, without anchor cable, average lid mountain thickness 347m, coal pillar width 20m install 1 group of this practicality at haulage gate heading end
New type mining stress of coal pillar meter, experimental monitoring work well, and mining stress of coal pillar meter can be realized soft with haulage gate side coal column
Property contact, stress of coal pillar sensor entirety stress, and can to coal column vertical stress, horizontal stress carry out on-line real time monitoring.Its
It is the same as embodiment 1.
Claims (1)
1. a kind of mining stress of coal pillar meter, including stress of coal pillar sensor, mining signal cable and stress of coal pillar instrument, coal column are answered
Power instrument is connected by mine cable with stress of coal pillar sensor, is placed outside coal side, is passed through RS485 interface access industrial rings
Net realizes that stress of coal pillar online data monitors in real time, it is characterised in that：The stress of coal pillar sensor includes male-tapered set
Pipe, inner conical casing, belt stress sensor group and foil resistance piece, male-tapered casing are half tile structure, are arranged vertically above and below
Combine closely, male-tapered casing have dilatancy, inner conical casing be half tile structure, it is left and right it is horizontally disposed combine closely, outer cone
Inner conical casing is set in shape casing, belt stress sensor group is set in inner conical casing, belt stress sensor group includes
Foil resistance piece, inner conical set is arranged in several uniformly distributed monomer annular strain gauges between monomer annular strain gauge
Cross location hole is attacked in pipe tail portion, connects hollow mounting stem, and hollow mounting stem is steel-tube construction, header arrangement cross positioning device,
It is connected with inner conical casing tail portion, mining signal cable built in hollow mounting stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060428.0U CN207675347U (en) | 2017-08-23 | 2017-08-23 | A kind of mining stress of coal pillar meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060428.0U CN207675347U (en) | 2017-08-23 | 2017-08-23 | A kind of mining stress of coal pillar meter |
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| Publication Number | Publication Date |
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| CN207675347U true CN207675347U (en) | 2018-07-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2017
- 2017-08-23 CN CN201721060428.0U patent/CN207675347U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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