CN203978443U - A kind of suspension device of gob side entry retaining - Google Patents
A kind of suspension device of gob side entry retaining Download PDFInfo
- Publication number
- CN203978443U CN203978443U CN201420219350.2U CN201420219350U CN203978443U CN 203978443 U CN203978443 U CN 203978443U CN 201420219350 U CN201420219350 U CN 201420219350U CN 203978443 U CN203978443 U CN 203978443U
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- CN
- China
- Prior art keywords
- presplitting
- side entry
- entry retaining
- gob side
- big gun
- 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.)
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Abstract
The utility model discloses a kind of suspension device of gob side entry retaining, the presplitting line that comprises gob side entry retaining, the presplitting big gun hole of constructing on presplitting line, adopt hydraulic prop coordination hinge back timber to set up canopy along presplitting big gun hole trend, and by anchor pole complexed metal net, carry out supporting on top board, the utility model is eliminated approaches the working surface coal body top stress and is concentrated, reduce digging ratio, enhance productivity, simple to operate, cheap, the bump of avoiding reserved coal pillar to cause, the harm such as Gas Outburst and spontaneous combustion, the wasting of resources of also having avoided reserved coal pillar to cause, improve resource recovery, reduce digging ratio, enhance productivity, reduce tunnelling and repair project amount, simplify face end maintenance workload, reduce labor strength, can obtain significant social benefit.
Description
Technical field
The utility model relates to a kind of suspension device of gob side entry retaining, belongs to colliery suspension device technical field is installed.
Background technology
The former use concrete precast block build a wall+anchor net of existing coal mine fully-mechanized mining working air intake lane gob side entry retaining and Application of Combined Support with Anchor carry out gob side entry retaining, the fund input of this gob side entry retaining mode is high, construction sequence complicated (from making fragment of brick, maintenance fragment of brick, transport fragment of brick, building fragment of brick by laying bricks or stones), labour intensity is large, and can not effectively cut off top board, cause the passive pressurized of body of wall.
Summary of the invention
The object of the invention is to: a kind of supporting method and device of gob side entry retaining are provided, eliminate approaches the working surface coal body top stress and concentrate, thereby overcome the deficiencies in the prior art.
The technical solution of the utility model
A kind of supporting method of gob side entry retaining, the big gun hole of constructing on presplitting line in colliery, adopt energy-gathering device powder charge, and make cumulative direction corresponding to rock mass presplitting direction, detonation product will be at the upper cumulative shooting flow that forms of two direction initializations (being parallel to each other and vertical direction with rock mass presplitting direction), and tensile stress is concentrated in generation, presplitting big gun hole is run through along cumulative direction, form pre-broken face, along staying lane side presplitting surface construction to cut topmast protective material, propelling along with back production, stay the top board in lane under the effect of Ya Ji goaf, ore deposit pressure and self pressure, along with pre-broken face cut top be caving, impel the pressure in goaf to lay down, alleviate the roof pressure that stays lane, reached a kind of object of cutting top release gob side entry retaining.
In aforesaid deep hole cumulative borehole presplitting top board gob side entry retaining construction method, described in cut topmast protective material and comprise that individual prop coordination hinge bar timbering and anchor cable coordinate bolting with wire mesh.
In aforesaid deep hole cumulative borehole presplitting top board gob side entry retaining construction method, this individual prop coordination hinge bar timbering is specially and adopts hydraulic prop coordination hinge back timber to set up two row's canopies along the presplitting line trend in explosion place to carry out supporting.
In aforesaid deep hole cumulative borehole presplitting top board gob side entry retaining construction method, this anchor cable coordinates bolting with wire mesh to refer on the basis of original technology anchor pole complexed metal net supporting roof, along gob side entry retaining center line in roadway every an anchor cable of 2～2.5m construction, behind Ruo Liu lane, under the large increase of roadway in the roof pressure, help pressure, while making coal wall have serious wall caving, in real coal body Ce lane, help to carry additionally wire lath and add and make a call to two row's pipe seam anchor bars.
A suspension device for gob side entry retaining, comprises the presplitting line of gob side entry retaining, and the presplitting big gun hole of constructing on presplitting line adopts hydraulic prop coordination hinge back timber to set up canopy along presplitting big gun hole trend, and by anchor pole complexed metal net, carry out supporting on top board.
In the suspension device of aforesaid gob side entry retaining, along gob side entry retaining center line in roadway every 2～2.5m construction anchor cable.
Compared with prior art, the utility model is eliminated approaches the working surface coal body top stress and is concentrated, reduce digging ratio, enhance productivity, simple to operate, cheap, the bump of avoiding reserved coal pillar to cause, the harm such as Gas Outburst and spontaneous combustion, the wasting of resources of also having avoided reserved coal pillar to cause, improve resource recovery, reduce digging ratio, enhance productivity, reduce tunnelling and repair project amount, simplify face end maintenance workload, reduce labor strength, can obtain significant social benefit, above eliminating approaches the working surface coal body stress concentrated in, avoided Gas Outburst, bump hidden danger, there is obvious safety benefit, construction technology is simple simultaneously, the utility model implements only need to construct borehole, charge explosion, cheap, cost-saving, fund input is little, income is large, simple to operate, the workable technology content that not only can promote mine production, and can promote at the similar mine of geological conditions (especially highly gassy mine gob side entry retaining), can create more economy, social benefit.
Accompanying drawing explanation;
Accompanying drawing 1 is the utility model structural front view;
Accompanying drawing 2 is the utility model structure top view.
Being labeled as in accompanying drawing: 1-gob side entry retaining, 2-presplitting line, 3-presplitting big gun hole, 4-hydraulic prop, 5-articulated roof beam, 6-canopy, 7-anchor pole, 8-wire lath, 9-anchor cable.
The specific embodiment;
Below in conjunction with accompanying drawing, the utility model is described in further detail, but not as to any restriction of the present utility model.
Embodiment of the present utility model: the supporting method of a kind of gob side entry retaining of the present utility model, the big gun hole of constructing on presplitting line in colliery, adopt energy-gathering device powder charge, and make cumulative direction corresponding to rock mass presplitting direction, detonation product will be at the upper cumulative shooting flow that forms of two direction initializations (being parallel to each other and vertical direction with rock mass presplitting direction), and tensile stress is concentrated in generation, presplitting big gun hole is run through along cumulative direction, form pre-broken face, along staying lane side presplitting surface construction to cut topmast protective material, propelling along with back production, stay the top board in lane under the effect of Ya Ji goaf, ore deposit pressure and self pressure, along with pre-broken face cut top be caving, impel the pressure in goaf to lay down, alleviate the roof pressure that stays lane, reached a kind of object of cutting top release gob side entry retaining.
The described topmast protective material of cutting comprises that individual prop coordination hinge bar timbering and anchor cable coordinate bolting with wire mesh, and the specific embodiment is:.
(1), individual prop coordination hinge bar timbering: adopt DW22～DW25 type hydraulic prop to coordinate HDJB-1200 type articulated roof beam to set up two row's canopies along the presplitting line trend in explosion place and carry out supporting, and bundle wire lath (bilayer) isolation goaf with iron wire on the monomer column along goaf one side.
(2), anchor cable coordinates bolting with wire mesh: on the basis of original anchor pole complexed metal net supporting roof, along gob side entry retaining center line in roadway every an anchor cable that specification is diameter * length=0.01524m * 6.0m of 2.4m construction, if help pressure under the large increase of roadway in the roof pressure behind Liu lane, while making coal wall have serious wall caving, can help in real coal body Ce lane to carry additionally wire lath and add and make a call to two row's pipe seam anchor bars, anchor pole specification is diameter * length=0.042m * 1.4m, and an array pitch is 1.0m * 1.0m.
According to the suspension device of the constructed a kind of gob side entry retaining of above-mentioned supporting method, as shown in the figure: the presplitting line 3 that comprises gob side entry retaining 1, it is characterized in that: the presplitting big gun hole 3 of constructing on presplitting line 2, adopt hydraulic prop 4 coordination hinge back timbers 5 along presplitting big gun hole 3 trends set up canopy 6, and on top board, by anchor pole 7 complexed metal nets 8, carry out supporting, along gob side entry retaining center line in roadway every 2～2.5m construction anchor cable 9.
Claims (2)
1. the suspension device of a gob side entry retaining, the presplitting line (3) that comprises gob side entry retaining (1), it is characterized in that: in the upper construction of presplitting line (2) presplitting big gun hole (3), adopt hydraulic prop (4) coordination hinge back timber (5) to set up canopy (6) along presplitting big gun hole (3) trend, and by anchor pole (7) complexed metal net (8), carry out supporting on top board.
2. the suspension device of gob side entry retaining according to claim 1, is characterized in that: along gob side entry retaining center line in roadway every 2～2.5m construction anchor cable (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219350.2U CN203978443U (en) | 2014-04-30 | 2014-04-30 | A kind of suspension device of gob side entry retaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219350.2U CN203978443U (en) | 2014-04-30 | 2014-04-30 | A kind of suspension device of gob side entry retaining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978443U true CN203978443U (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420219350.2U Expired - Fee Related CN203978443U (en) | 2014-04-30 | 2014-04-30 | A kind of suspension device of gob side entry retaining |
Country Status (1)
| Country | Link |
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| CN (1) | CN203978443U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121676A (en) * | 2016-08-26 | 2016-11-16 | 百色百矿集团有限公司 | A kind of supporting construction and method for protecting support thereof protecting lane for gob side entry retaining |
| CN109488353A (en) * | 2018-10-23 | 2019-03-19 | 新汶矿业集团有限责任公司 | A kind of stope advance support system and method |
| CN110411840A (en) * | 2019-08-29 | 2019-11-05 | 安徽理工大学 | Simulate experimental rig and method that the earth's surface soil body in goaf generates tension crack |
| CN113417640A (en) * | 2021-08-10 | 2021-09-21 | 湖南科技大学 | Gob-side entry retaining supporting method in reserved extremely-close thin coal seam separate mining-combined mining |
-
2014
- 2014-04-30 CN CN201420219350.2U patent/CN203978443U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121676A (en) * | 2016-08-26 | 2016-11-16 | 百色百矿集团有限公司 | A kind of supporting construction and method for protecting support thereof protecting lane for gob side entry retaining |
| CN109488353A (en) * | 2018-10-23 | 2019-03-19 | 新汶矿业集团有限责任公司 | A kind of stope advance support system and method |
| CN110411840A (en) * | 2019-08-29 | 2019-11-05 | 安徽理工大学 | Simulate experimental rig and method that the earth's surface soil body in goaf generates tension crack |
| CN110411840B (en) * | 2019-08-29 | 2023-12-26 | 安徽理工大学 | Test device and method for simulating tension fracture generated by goaf earth surface soil body |
| CN113417640A (en) * | 2021-08-10 | 2021-09-21 | 湖南科技大学 | Gob-side entry retaining supporting method in reserved extremely-close thin coal seam separate mining-combined mining |
| CN113417640B (en) * | 2021-08-10 | 2023-01-03 | 湖南科技大学 | Gob-side entry retaining supporting method in reserved extremely-close thin coal seam separate mining-combined mining |
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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: 20141203 Termination date: 20150430 |
|
| EXPY | Termination of patent right or utility model |