CN112412476B - Method for determining installation position of roof separation instrument in large-section area of coal mine - Google Patents
Method for determining installation position of roof separation instrument in large-section area of coal mine Download PDFInfo
- Publication number
- CN112412476B CN112412476B CN202011373731.2A CN202011373731A CN112412476B CN 112412476 B CN112412476 B CN 112412476B CN 202011373731 A CN202011373731 A CN 202011373731A CN 112412476 B CN112412476 B CN 112412476B
- Authority
- CN
- China
- Prior art keywords
- area
- roadway
- determining
- opening
- stress superposition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 34
- 238000009434 installation Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000003245 coal Substances 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000032798 delamination Effects 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a method for determining the installation position of a roof separation instrument in a large-section area of a coal mine, which comprises the following steps: determining the position and the three-dimensional structure of a stress superposition area of a large-section area top plate according to the underground structure; and determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, and determining the position of the mass center as the installation position of the roof separation instrument. According to the invention, the stress superposition area of the large-section area is determined, and the center point of the stress superposition area is found, so that the waste of the separation layer instrument and the complicated construction procedure can be avoided, the installation position of the top plate separation layer instrument is standardized, and the maximum top plate separation layer of the large-section area is effectively monitored.
Description
Technical Field
The invention relates to the technical field of underground safety, in particular to a method for determining the installation position of a roof separation instrument in a large-section area of a coal mine.
Background
Laws and regulations do not make relevant requirements on the installation position of a separation layer instrument in a large-section area of a coal mine underground by underground mining. The mine is in large-section areas such as roadway openings, through crossing points, drilling sites, shunting chambers and the like, the installation position of the delamination instrument has no clear requirement, and the underground construction positions are various.
The number of the construction delamination apparatuses at the roadway intersection is large, the number of the construction delamination apparatuses at part of the intersection is up to three, waste of the delamination apparatuses and complicated construction procedures are caused, and the position of the delamination apparatuses cannot effectively monitor the maximum roof delamination of a large-section area.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for determining the installation position of a roof separation instrument in a large-section area of a coal mine.
In order to achieve the technical purpose of the invention, the invention constructs a method for determining the installation position of a roof separation instrument of a large-section area of a coal mine, which comprises the following steps:
determining the position and the three-dimensional structure of a stress superposition area of a large-section area top plate according to the underground structure;
and determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, and determining the position of the mass center as the installation position of the roof separation instrument.
In the step of determining the position of the stress superposition area of the top plate of the large-section area and the three-dimensional structure according to the underground structure, the influence of underground roadway opening, penetration, drilling site and shunting chamber construction on the stress distribution of the crossheading roadway is combined, roadway support and surrounding rock self stability factors are combined, after the conventional section roadway is supported, the roadway side can stably and reliably support the top plate, and on the basis, the large-section area defines the stress superposition area by taking the conventional section as a boundary.
Before the step of determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, judging the type of a roadway opening connected with the stress superposition area.
The roadway entry type at least comprises: t-shaped roadway opening without grinding angle, four-fork roadway opening where two roadways are intersected, right-angle three-fork roadway opening with grinding angle and large-section chamber opening.
If the roadway opening type is a T-shaped roadway opening without a grinding angle or a four-fork roadway opening where two roadways intersect, taking the intersection point of the center lines of the roadways as a centroid, and installing a roof separation instrument at the determined centroid position;
if the roadway opening is a right-angle three-fork roadway opening with a grinding angle or a large-section chamber opening, the roof separation instrument is arranged at the position 0.5-1.5 m away from the direction of the roadway at the midpoint of the roadway intersection.
Wherein, when the roadway entry type is a right-angle three-fork roadway entry with a grinding angle or a large-section chamber opening, the step of determining the centroid position comprises the following steps:
drawing a stress superposition area of a large-section area in CAD, wherein the boundary of the stress superposition area is a closed polygon, and converting the polygon of the stress superposition area into a area;
the newly built UCS sets the origin of coordinates on 1 endpoint of the polygon;
opening a 'query' toolbar, using a 'area/quality characteristic' command in the toolbar to query the area of the stress superposition area, and displaying a 'centroid' position in a popped text box;
the location of the center point of the stress superposition area of the large cross-section area is marked in the figure.
Compared with the prior art, the method for determining the installation position of the roof separation instrument in the large-section area of the coal mine comprises the following steps: determining the position and the three-dimensional structure of a stress superposition area of a large-section area top plate according to the underground structure; and determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, and determining the position of the mass center as the installation position of the roof separation instrument. According to the invention, the stress superposition area of the large-section area is determined, and the center point of the stress superposition area is found, so that the waste of the separation layer instrument and the complicated construction procedure can be avoided, the installation position of the top plate separation layer instrument is standardized, and the maximum top plate separation layer of the large-section area is effectively monitored.
Drawings
FIG. 1 is a flow chart of a method for determining the installation position of a roof separation instrument in a large-section area of a coal mine.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
Referring to fig. 1, the invention provides a method for determining the installation position of a roof separation instrument in a large-section area of a coal mine, which comprises the following steps:
determining the position and the three-dimensional structure of a stress superposition area of a large-section area top plate according to the underground structure;
and determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, and determining the position of the mass center as the installation position of the roof separation instrument.
In the step of determining the position of the stress superposition area of the top plate of the large-section area and the three-dimensional structure according to the underground structure, the influence of underground roadway opening, penetration, drilling site and shunting chamber construction on the stress distribution of the crossheading roadway is combined, roadway support and surrounding rock self stability factors are combined, after the conventional section roadway is supported, the roadway side can stably and reliably support the top plate, and on the basis, the large-section area defines the stress superposition area by taking the conventional section as a boundary.
Before the step of determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, judging the type of a roadway opening connected with the stress superposition area.
The roadway entry type at least comprises: t-shaped roadway opening without grinding angle, four-fork roadway opening where two roadways are intersected, right-angle three-fork roadway opening with grinding angle and large-section chamber opening.
If the roadway opening type is a T-shaped roadway opening without a grinding angle or a four-fork roadway opening where two roadways intersect, taking the intersection point of the center lines of the roadways as a centroid, and installing a roof separation instrument at the determined centroid position;
if the roadway opening is a right-angle three-fork roadway opening with a grinding angle or a large-section chamber opening, the roof separation instrument is arranged at the position 0.5-1.5 m away from the direction of the roadway at the midpoint of the roadway intersection.
Wherein, when the roadway entry type is a right-angle three-fork roadway entry with a grinding angle or a large-section chamber opening, the step of determining the centroid position comprises the following steps:
drawing a stress superposition area of a large-section area in CAD, wherein the boundary of the stress superposition area is a closed polygon, and converting the polygon of the stress superposition area into a area;
the newly built UCS sets the origin of coordinates on 1 endpoint of the polygon;
opening a 'query' toolbar, using a 'area/quality characteristic' command in the toolbar to query the area of the stress superposition area, and displaying a 'centroid' position in a popped text box;
the location of the center point of the stress superposition area of the large cross-section area is marked in the figure.
Compared with the prior art, the method for determining the installation position of the roof separation instrument in the large-section area of the coal mine comprises the following steps: determining the position and the three-dimensional structure of a stress superposition area of a large-section area top plate according to the underground structure; and determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, and determining the position of the mass center as the installation position of the roof separation instrument. According to the invention, the stress superposition area of the large-section area is determined, and the center point of the stress superposition area is found, so that the waste of the separation layer instrument and the complicated construction procedure can be avoided, the installation position of the top plate separation layer instrument is standardized, and the maximum top plate separation layer of the large-section area is effectively monitored.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (2)
1. The method for determining the installation position of the roof separation instrument in the large-section area of the coal mine is characterized by comprising the following steps of:
determining the position and the three-dimensional structure of a stress superposition area of a large-section area top plate according to the underground structure;
determining the position of the mass center according to the three-dimensional structure of the stress superposition area, determining the position of the mass center as the installation position of the roof separation layer instrument,
in the step of determining the position and the three-dimensional structure of the stress superposition area of the top plate of the large-section area according to the underground structure, the influence of the underground tunnel opening, the penetration, the drilling site and the shunting chamber construction on the stress distribution of the crossheading tunnel is combined, the tunnel support and the stability factors of surrounding rock are combined, the tunnel side can stably and reliably support the top plate after the conventional section tunnel is supported, on the basis, the large-section area defines the stress superposition area by taking the conventional section as the boundary,
before the step of determining the position of the mass center of the stress superposition area according to the three-dimensional structure of the stress superposition area, judging the type of a roadway opening connected with the stress superposition area, wherein the type of the roadway opening at least comprises: a T-shaped roadway opening without a grinding angle, a four-fork roadway opening where two roadways are intersected, a right-angle three-fork roadway opening with a grinding angle and a large-section chamber opening,
if the roadway opening type is a T-shaped roadway opening without a grinding angle or a four-fork roadway opening where two roadways intersect, taking the intersection point of the center lines of the roadways as a centroid, and installing a roof separation instrument at the determined centroid position;
if the roadway opening is a right-angle three-fork roadway opening with a grinding angle or a large-section chamber opening, the roof separation instrument is arranged at the position 0.5-1.5 m away from the direction of the roadway at the midpoint of the roadway intersection.
2. The method of determining a roof separation instrument installation position for a large cross section area of a coal mine as claimed in claim 1, wherein the step of determining the centroid position when the roadway entry is a right-angle three-fork roadway entry with a ground angle or a large cross section chamber entry comprises:
drawing a stress superposition area of a large-section area in CAD, wherein the boundary of the stress superposition area is a closed polygon, and converting the polygon of the stress superposition area into a area;
the newly built UCS sets the origin of coordinates on 1 endpoint of the polygon;
opening a 'query' toolbar, using a 'area/quality characteristic' command in the toolbar to query the area of the stress superposition area, and displaying a 'centroid' position in a popped text box;
the location of the center point of the stress superposition area of the large cross-section area is marked in the figure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373731.2A CN112412476B (en) | 2020-11-30 | 2020-11-30 | Method for determining installation position of roof separation instrument in large-section area of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373731.2A CN112412476B (en) | 2020-11-30 | 2020-11-30 | Method for determining installation position of roof separation instrument in large-section area of coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112412476A CN112412476A (en) | 2021-02-26 |
| CN112412476B true CN112412476B (en) | 2023-04-25 |
Family
ID=74828908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011373731.2A Active CN112412476B (en) | 2020-11-30 | 2020-11-30 | Method for determining installation position of roof separation instrument in large-section area of coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112412476B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4001942A (en) * | 1974-05-30 | 1977-01-11 | Bergwerksverband Gmbh | Rod extensometer |
| CN103510986B (en) * | 2013-10-25 | 2015-05-20 | 中国矿业大学 | Tunnel roof separation dynamic monitoring system based on fiber bragg grating and early-warning method thereof |
| CN104794327B (en) * | 2015-05-06 | 2016-06-01 | 西安科技大学 | The multisystem mine roof safety early warning system merged based on decision-making and its implementation |
| CN110145306B (en) * | 2019-05-22 | 2020-09-22 | 山东科技大学 | Shallow-buried weak cementation top plate working face overlying rock zonal division method and application |
| CN210268562U (en) * | 2019-07-12 | 2020-04-07 | 山西晋城无烟煤矿业集团有限责任公司 | Digital display roof separation layer displacement alarm |
| CN110700883B (en) * | 2019-09-23 | 2022-03-11 | 兖矿新疆矿业有限公司 | Gob-side entry driving prevention and control method for large-dip-angle coal seam composite disaster small coal pillar |
| CN111222254A (en) * | 2020-01-22 | 2020-06-02 | 西安科技大学 | Working face rock burst danger grade dividing method and system based on stress superposition method |
-
2020
- 2020-11-30 CN CN202011373731.2A patent/CN112412476B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112412476A (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2021453348B2 (en) | Method for preventing and controlling rock bursts in development roadway group | |
| CN110985058A (en) | Grouting reinforcement method for fault fracture zone of coal face | |
| CN111255453B (en) | Method for reducing ground surface subsidence range of underground mining area | |
| CN111810162B (en) | Construction method for coal mine ground drilling accurate tunnel penetration | |
| CN116258000B (en) | Anti-impact method for artificial liberation layer | |
| CN105927232A (en) | Deep-blocking and shallow-grouting grouting method for no-blank area of mine and grouting safety protecting device | |
| CN110512588B (en) | Protection method for tension fracture belt type protection zone crossing mine surface | |
| WO2023142303A1 (en) | Combined mining method for underground mine | |
| Coşar | Application of rock mass classification systems for future support design of the Dim Tunnel near Alanya | |
| CN112412476B (en) | Method for determining installation position of roof separation instrument in large-section area of coal mine | |
| CN105625446B (en) | A kind of construction method of tunnel undercrossing tunnel | |
| CN102678132A (en) | Anti-rockfall reinforced concrete open-cut tunnel structure | |
| CN212104124U (en) | Landslide prevention and control construction unit and system | |
| CN110080768B (en) | Coal mine tunnel large-scale rock burst prevention and control method | |
| CN105089043B (en) | Spatial isolation type runway pavement underlying goaf treatment method | |
| CN101886546B (en) | Method for inhibiting roof deformation of coal mine underground bolt and anchor cable roadway | |
| CN117167011A (en) | Series-parallel connection full-length pressure relief hole distribution method for broken surrounding rock based on long horizontal holes of top plate | |
| CN112459779A (en) | Pre-splitting pressure relief method for improving composite roof | |
| CN106285777A (en) | The method that flood mine mineral building discharges water in advance | |
| CN106149631A (en) | High mountain strid arch dam avalanche type Slope Treatment method | |
| CN115163026B (en) | Layer penetrating drilling arrangement method for protective layer under long-distance coal seam | |
| Cui et al. | Review of an Improved Longwall Panel Layout for Ground Control in Longwall Mining | |
| CN115288632B (en) | Design method for preventing first-row drilling damage of separation layer grouting | |
| CN203822322U (en) | Open cut tunnel structure used in highway passing through landslide mass | |
| Wang | Numerical simulation research on the influence of buried depth on the stress field of overlying rock in floor roadway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |