CN108195304A - A kind of Coal Face with Greater Mining Height coal wall caving depth assay method - Google Patents
A kind of Coal Face with Greater Mining Height coal wall caving depth assay method Download PDFInfo
- Publication number
- CN108195304A CN108195304A CN201711216570.4A CN201711216570A CN108195304A CN 108195304 A CN108195304 A CN 108195304A CN 201711216570 A CN201711216570 A CN 201711216570A CN 108195304 A CN108195304 A CN 108195304A
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- Prior art keywords
- coal
- wall caving
- face
- depth
- assay method
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- 239000003245 coal Substances 0.000 title claims abstract description 46
- 238000005065 mining Methods 0.000 title claims abstract description 17
- 238000003556 assay Methods 0.000 title claims abstract description 11
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 14
- 239000003365 glass fiber Substances 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000011152 fibreglass Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000010223 real-time analysis Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000556 factor analysis Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
A kind of Coal Face with Greater Mining Height coal wall caving depth assay method, suitable for coal wall caving depth monitoring and prevention under the conditions of high working face.This method is on large-mining-height working surface, a wall caving measuring point is chosen at a certain distance, the glass fibre reinforced plastics rockbolts for being evenly equipped with fiber-optic grating sensor are set on coal wall, the data transmitted by computer real-time analysis, obtain stress and its variation of each section of anchor pole, it will appear stress according to the corresponding anchor pole section of wall caving section to reduce, can obtain the depth bounds of wall caving.The present invention has monitored wall caving depth on the basis of coal wall caving is prevented, and advantage is provided for large-mining-height working surface safety and high efficiency.
Description
Technical field
The present invention relates to a kind of Coal Face with Greater Mining Height coal wall caving depth assay methods, belong to coal mining stope and enclose
Rock control technology field.
Background technology
Large cutting height workface technology is with production efficiency is high, per unit area yield is high, tunnelling amount is low, maintenance is small, coal recovery rate
It is high, working face equipment removal of home number is few, the simple advantages such as low with percentage of shale content of process.Nowadays the superiority and height of this coal-mining method
Production property oneself through obtain society accreditation, be increasingly becoming China's one of most important developing direction of thick coal-layer mining at this stage.So
And with the increase of mining height, coal wall caving odds accordingly increases, and coal wall caving phenomenon is more serious, to underground work
Personnel cause the huge person to threaten, and influence Safety of Coal Mine Production.
In terms of coal wall caving, existing achievement in research focuses mostly in factor analysis, the wall caving mechanism for influencing coal wall caving
In research, wall caving mode, wall caving form and type and the technical measures of prevention coal wall caving, it there is no and find a kind of effective prison
The method for surveying coal wall caving depth, this present situation directly limits control coal wall caving method and its accurate of parameter determines.
Therefore it is badly in need of a kind of easy, safety working face wall wall caving depth monitoring and its control method, in order to control coal wall
The determining offer precise conditions of wall caving method and its parameter.
Invention content
In order to overcome the above-mentioned deficiency of the prior art, the present invention provides a kind of Coal Face with Greater Mining Height coal wall caving depth measure side
Method, this method monitor wall caving depth on the basis of preventing coal wall caving, can realize that the safe and efficient of large-mining-height working surface is opened
It adopts.
The present invention solve its technical problem the technical solution adopted is that：Include the following steps：
A. when working face overhauls, measuring point is arranged at a certain distance along working face, measuring point has certain altitude；
B. the face guard of point position high working face hydraulic support is risen, horizontal drilling is dug on coal wall, sets advance peace
The glass fibre reinforced plastics rockbolts of fiber-optic grating sensor are installed, fall face guard；
C. by fiber-optic grating sensor set all on working face and optical cable is connected to, first passing through fiber grating adjusting apparatus will
Optical signal is converted into digital signal, then the data transmitted by computer real-time analysis, obtains stress and its change of each section of anchor pole
Change；
D. when wall caving occurs for working face wall, the corresponding anchor pole section of wall caving section will appear stress reduction, by glass
The analysis of each section of stress of steel anchor rod obtains the depth bounds of wall caving.
Compared with prior art, a kind of Coal Face with Greater Mining Height coal wall caving depth assay method of the invention, using setting in work
Make the glass fibre reinforced plastics rockbolts of face coal wall, one fiber-optic grating sensor of the arrangement that is spaced a distance on glass fibre reinforced plastics rockbolts, in anchoring sheet
Wall caving depth is monitored under the premise of side, advantage is provided for large-mining-height working surface safety and high efficiency.Structure letter of the present invention
Single, simple installation is, it can be achieved that the distributed measurement of anchor pole difference section stress；Using fiber-optic grating sensor as sensing element,
With high measuring accuracy and sensitivity, atomic small stress variation information, high degree of automation can be obtained；Non-active operation,
Essential safety, signal transmission reliability are high, long distance of signal transmission, using optical signal as information carrier, not by coal mine Zhong Shui, watt
The influence of this and other electromagnetic radiation, strong antijamming capability；Glass fibre reinforced plastics rockbolts anchor coal wall, can prevent wall caving, and its performance is steady
Fixed, the body of rod is easily cut, and when cutting will not generate spark, and explosion-proof antistatic is extremely advantageous to working face safety coal extraction.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the vertical view of one embodiment of the invention.
Fig. 2 is the sectional view of A-A in Fig. 1.
Fig. 3 is the structure diagram of the glass fibre reinforced plastics rockbolts in Fig. 1.
In figure：1st, high working face hydraulic support, 2, face guard, 3, fiber-optic grating sensor, 4, glass fibre reinforced plastics rockbolts, 5, tail optical fiber,
6th, optical cable, 7, fiber grating adjusting apparatus, 8, computer.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work, belong to protection scope of the present invention.
Fig. 1 to 3 shows the structure diagram of a preferred embodiment of the invention, a kind of high working face in Fig. 1 and Fig. 2
Stope coal wall caving depth assay method, includes the following steps：
A. when working face overhauls, measuring point is arranged every 20m, measuring point should be arranged at 3/5~1 times of mining height along working face；
B. the face guard 2 of point position high working face hydraulic support 1 is risen, horizontal drilling is dug on coal wall, is set in advance
The glass fibre reinforced plastics rockbolts 4 of fiber-optic grating sensor 3 are installed, a length of 4m of the glass fibre reinforced plastics rockbolts 4, a diameter of 16mm fall wall supporting
Plate 2 with prevent coal wall continue wall caving；
C. the tail optical fiber 5 of fiber-optic grating sensor 3 all on working face is drawn, gather and is connected to optical cable 66, by light
Fine grating adjusting apparatus 7 converts optical signal into digital signal, monitors in real time and analyzes and processes by computer 8, show that anchor pole is each
The stress of section and its variation；
D. when wall caving occurs for working face wall, the corresponding anchor pole section of wall caving section will appear stress reduction, by glass
The analysis of 4 each sections of stress of steel anchor rod can obtain the depth bounds of wall caving.
As shown in figure 3, the surface of glass fibre reinforced plastics rockbolts 4 described in the present embodiment is slotted along central axis, and 1~2mm of groove depth, groove width
2~4mm, the fiber-optic grating sensor 3 are pasted onto in slot, arrange one every 0.8m, the laying of fiber-optic grating sensor 3 is close
Degree not only meets detection demand, but also reduces the complexity of sensor installation.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention, any simple modification and equal variation are made to above example, each falls within the guarantor of the present invention
Within the scope of shield.
Claims (5)
1. a kind of Coal Face with Greater Mining Height coal wall caving depth assay method, it is characterized in that：Include the following steps：
A. when working face overhauls, measuring point is arranged at a certain distance along working face, measuring point has certain altitude；
B. the face guard (2) of point position high working face hydraulic support (1) is risen, horizontal drilling is dug on coal wall, is set in advance
The glass fibre reinforced plastics rockbolts (4) of fiber-optic grating sensor (3) are installed, fall face guard (2)；
C. fiber-optic grating sensor (3) all on working face is gathered and is connected to optical cable (6), first pass through fiber grating adjusting apparatus
(7) digital signal, then the data by computer (8) analysis transmission in real time are converted optical signal into, obtain answering for each section of anchor pole
Power and its variation；
D. when wall caving occurs for working face wall, the corresponding anchor pole section of wall caving section will appear stress reduction, by fiberglass anchor
The analysis of bar (4) each section of stress obtains the depth bounds of wall caving.
2. a kind of Coal Face with Greater Mining Height coal wall caving depth assay method according to claim 1, it is characterized in that：The measuring point
To arrange one every 20m, the height of measuring point is 3/5~1 times of mining height.
3. a kind of Coal Face with Greater Mining Height coal wall caving depth assay method according to claim 1 or 2, it is characterized in that：It is described
The length of glass fibre reinforced plastics rockbolts (4) is 4m, diameter 16mm.
4. a kind of Coal Face with Greater Mining Height coal wall caving depth assay method according to claim 3, it is characterized in that：The light
Fiber grating sensor (3) is to arrange one every 0.8m to be arranged in evenly and at intervals on glass fibre reinforced plastics rockbolts (4).
5. a kind of Coal Face with Greater Mining Height coal wall caving depth assay method according to claim 4, it is characterized in that：Described
Glass fibre reinforced plastics rockbolts (4) surface is slotted along central axis, and 1~2mm of groove depth, 2~4mm of groove width, fiber-optic grating sensor (3) are pasted onto
In slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216570.4A CN108195304A (en) | 2017-11-28 | 2017-11-28 | A kind of Coal Face with Greater Mining Height coal wall caving depth assay method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216570.4A CN108195304A (en) | 2017-11-28 | 2017-11-28 | A kind of Coal Face with Greater Mining Height coal wall caving depth assay method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108195304A true CN108195304A (en) | 2018-06-22 |
Family
ID=62573274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711216570.4A Pending CN108195304A (en) | 2017-11-28 | 2017-11-28 | A kind of Coal Face with Greater Mining Height coal wall caving depth assay method |
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| Country | Link |
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| CN (1) | CN108195304A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209367A (en) * | 2018-10-31 | 2019-01-15 | 攀枝花学院 | Fully mechanized mining for high working face coal wall |
| CN111103029A (en) * | 2019-12-26 | 2020-05-05 | 河南理工大学 | Intelligent monitoring device and monitoring method for fiber bragg grating of coal level of coal bunker |
| CN111721457A (en) * | 2020-06-22 | 2020-09-29 | 中国矿业大学(北京) | Method for monitoring sliding surface shearing force and burial depth in tunnel deeply buried across sliding mass |
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|---|---|---|---|---|
| CN201278201Y (en) * | 2008-09-03 | 2009-07-22 | 中国石油天然气股份有限公司 | Pipeline landslide monitoring and early warning system based on fiber bragg grating |
| CN102312676A (en) * | 2011-09-26 | 2012-01-11 | 山西晋城无烟煤矿业集团有限责任公司 | Construction method for high face mining support removing passage under complicated geological condition |
| CN102797491A (en) * | 2012-08-04 | 2012-11-28 | 河南理工大学 | System and method for monitoring dynamic disaster of coal mine with fiber bragg gratings |
| CN203230442U (en) * | 2013-05-15 | 2013-10-09 | 安徽理工大学 | Coal wall reinforcing structure of high cutting and overhand inclined working face |
| CN103454021A (en) * | 2013-08-15 | 2013-12-18 | 中国矿业大学 | Tunnel surrounding rock stress monitoring device based on fiber grating sensing |
| CN105240037A (en) * | 2015-10-21 | 2016-01-13 | 浙江工业大学 | Information anchor rod with detecting and alarming functions |
| CN106247965A (en) * | 2016-07-15 | 2016-12-21 | 东南大学 | Tunnel surrounding monitoring method based on multifunctional intellectual anchor pole |
-
2017
- 2017-11-28 CN CN201711216570.4A patent/CN108195304A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201278201Y (en) * | 2008-09-03 | 2009-07-22 | 中国石油天然气股份有限公司 | Pipeline landslide monitoring and early warning system based on fiber bragg grating |
| CN102312676A (en) * | 2011-09-26 | 2012-01-11 | 山西晋城无烟煤矿业集团有限责任公司 | Construction method for high face mining support removing passage under complicated geological condition |
| CN102797491A (en) * | 2012-08-04 | 2012-11-28 | 河南理工大学 | System and method for monitoring dynamic disaster of coal mine with fiber bragg gratings |
| CN203230442U (en) * | 2013-05-15 | 2013-10-09 | 安徽理工大学 | Coal wall reinforcing structure of high cutting and overhand inclined working face |
| CN103454021A (en) * | 2013-08-15 | 2013-12-18 | 中国矿业大学 | Tunnel surrounding rock stress monitoring device based on fiber grating sensing |
| CN105240037A (en) * | 2015-10-21 | 2016-01-13 | 浙江工业大学 | Information anchor rod with detecting and alarming functions |
| CN106247965A (en) * | 2016-07-15 | 2016-12-21 | 东南大学 | Tunnel surrounding monitoring method based on multifunctional intellectual anchor pole |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209367A (en) * | 2018-10-31 | 2019-01-15 | 攀枝花学院 | Fully mechanized mining for high working face coal wall |
| CN111103029A (en) * | 2019-12-26 | 2020-05-05 | 河南理工大学 | Intelligent monitoring device and monitoring method for fiber bragg grating of coal level of coal bunker |
| CN111103029B (en) * | 2019-12-26 | 2021-04-30 | 河南理工大学 | Intelligent monitoring device and monitoring method for fiber bragg grating of coal level of coal bunker |
| CN111721457A (en) * | 2020-06-22 | 2020-09-29 | 中国矿业大学(北京) | Method for monitoring sliding surface shearing force and burial depth in tunnel deeply buried across sliding mass |
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Application publication date: 20180622 |