CN202745881U - Goaf-side entry retaining wall body - Google Patents
Goaf-side entry retaining wall body Download PDFInfo
- Publication number
- CN202745881U CN202745881U CN 201220323598 CN201220323598U CN202745881U CN 202745881 U CN202745881 U CN 202745881U CN 201220323598 CN201220323598 CN 201220323598 CN 201220323598 U CN201220323598 U CN 201220323598U CN 202745881 U CN202745881 U CN 202745881U
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- CN
- China
- Prior art keywords
- wall
- wall body
- side entry
- goaf
- retaining wall
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a goaf-side entry retaining wall body. The goaf-side entry retaining wall body is a coal gangue bag ball body, built by a coal gangue bag, with the thickness of 2.5-3.0 meters; a mineral plastic net is arranged on the surface of the coal gangue bag wall body; steel hoops are arranged every two meters on the retaining wall body; each steel hoop is structurally characterized that corresponding vertical steel belts are respectively arranged on two sides of the coal gangue bag wall body and are tightly pulled by long bolts; and M-shaped steel belts for retaining mines are used as the steel belts. By the goaf-side entry retaining wall body, the whole goaf-side entry gangues are formed integrally and are in high pressure resistance, so that separation of a laneway caused by the increment of sinkage of a top plate is prevented, a phenomenon that the gangue stacks are crushed by the top plate is avoided, and the accident caused by the increment of the sinkage of the top plate is radically avoided.
Description
Technical field
The utility model relates to the coal mining field.
Background technology
The stoping low coal seam work plane is in recovery process, for the excavation work amount in minimizing tunnel that can be larger with reduce loss of coal pillar, generally promote edge air gallery technology, traditional gob side entry retaining process using beats anchor pole, build and to establish the method that the spoil bag adds lapping or whitewashing and safeguard top board, through the investigation statistics, this technique can only can be used in the tunnel service time more in short-term.Observation confirms according to strata behavior analysis of roadway, the tunnel deflection changes less in earlier stage, the later stage deflection increases obviously, even exceeded the minimum constructive height that allows in the safety regulations in coal mine, make top board be prone to the absciss layer phenomenon, there is the hidden danger of the unexpected large tracts of land inbreak of top board to exist, and increased the unnecessary workloads such as planted agent, caving, had a strong impact on normal safety in production.Termination roof control when the left potential safety hazard of gob side entry retaining is next working face mining has also increased difficulty.
The utility model content
The purpose of this utility model is for solving the deficiencies in the prior art, a kind of gob-side entry retaining support body of wall of utility model and integral construction method.
Technical scheme is, a kind of gob-side entry retaining support body of wall, and it is the thick spoil bag body of wall of 2.5-3.0 rice that assembles with the spoil bag, it is characterized in that spoil bag surface of wall is provided with mining plastic wire, and 2 meters at every interval arranges stirrup at the supporting body of wall; The structure of stirrup is to arrange respectively a corresponding vertical steel band on spoil bag body of wall two sides, again with the vertical steel band tension of stay bolt with the two sides; The M steel band of model that above-mentioned steel band adopts coal mine support to use; Above-mentioned mining plastic wire is colliery supporting net commonly used.
The integral construction method of above-mentioned gob-side entry retaining support body of wall, step is as follows:
The first step,
Prepare material: for subsequent use in the bag of 1, spoil being packed into; 2, intercept mining plastic wire, the intercepted length of mining plastic wire is the height that the thickness of supporting body of wall adds the supporting body of wall of twice; 3, intercepting steel band, 1.2 meters of intercepted lengths, and in processing bolt hole, steel band two, 1.0 meters of bolt hole spacings; 4, the processing effective length is the stay bolt of support wall body thickness, and the stay bolt two ends all process screw thread;
Second step,
The substrate of cleaning gob-side entry retaining support body of wall, after having cleared up, the mining plastic wire of intercepting is layered in the substrate, during lapping at the mid portion of the mining plastics of substrate tiling, press stubble between two, after having tiled the remainder outside the support wall body thickness is rolled temporarily;
The 3rd step,
Lapping limit, limit assembles the spoil bag, and is undertaken by 1～2 meter advance of working cycle; After assembling first floor spoil bag, every interval stay bolt of 2 meters placements is bottom bolts, continue to assemble the spoil bag, on first floor spoil bag basis, assemble again when highly reaching 1.0 meters, to place another root stay bolt be the top bolt in the position on bottom bolts again, bottom bolts and top bolt consist of pair of bolts, continue to assemble the spoil bag to top board again, form spoil bag body of wall;
The 4th step,
The mining plastic wire temporarily rolled is upwards launched to cover the two sides of spoil bag body of wall, and the paired steel band that will process again is contained in respectively the two ends of bottom bolts and top bolt, and the nut of screwing on is executed and added pretightning force, forms the body of wall stirrup.
Gob-side entry retaining support body of wall of the present utility model, make whole gob side entry retaining spoil buttress form an integral body, compressive property is good, namely played the effect that prevents the amount of crushing increase and cause the tunnel absciss layer, played again to prevent the crush phenomenon of spoil buttress of top board, stopped that the amount of crushing increases and the generation that causes roof accident in root.
Description of drawings
Fig. 1 is the schematic diagram of the utility model gob-side entry retaining support body of wall embodiment.
Marginal data, 1-spoil bag body of wall, the mining plastic wire of 2-, 3-steel band, 4-bottom bolts, 5-top bolt.
The specific embodiment
As shown in Figure 1, a kind of gob-side entry retaining support body of wall, it is the thick spoil bag body of wall 1 of 2.5-3.0 rice that assembles with the spoil bag, wherein spoil bag body of wall 1 surface is provided with mining plastic wire 2, and 2 meters at every interval arranges stirrup at spoil bag body of wall 1; The structure of stirrup is, arranges respectively a corresponding vertical steel band 3 on spoil bag body of wall 1 two sides, again with vertical steel band 3 tensions with the two sides of bottom bolts 4 and top bolt 5.The M steel band of model that above-mentioned steel band 3 adopts coal mine support to use.Above-mentioned mining plastic wire 2 is colliery supporting net commonly used.
The integral construction method of above-mentioned gob-side entry retaining support body of wall, step is as follows:
The first step,
Prepare material: it is for subsequent use 1, to consist of the spoil bag with the knitting bagged spoil; 2, the mining plastic wire 2 of intercepting, the intercepted length of mining plastic wire 2 is the height that the thickness of supporting body of wall adds the supporting body of wall of twice; 3, intercepting steel band, 1.2 meters of intercepted lengths, and in processing bolt hole, steel band two, 1.0 meters of bolt hole spacings; 4, the processing effective length is the stay bolt of support wall body thickness, and the stay bolt two ends all process screw thread;
Second step,
The substrate of cleaning gob-side entry retaining support body of wall, after having cleared up, the mining plastic wire 2 of intercepting is layered in the substrate, during lapping at the mid portion of the mining plastics 2 of substrate tiling, press stubble between two, after having tiled the remainder outside the support wall body thickness is rolled temporarily;
The 3rd step,
Lapping limit, limit assembles the spoil bag, and is undertaken by 1～2 meter advance of working cycle; After assembling first floor spoil bag, every interval stay bolt of 2 meters placements is bottom bolts 4, continue to assemble the spoil bag, on first floor spoil bag basis, assemble again when highly reaching 1.0 meters, to place another root stay bolt be top bolt 5 in the position on bottom bolts 4 again, bottom bolts 4 and top bolt 5 consist of pair of bolts, continue to assemble the spoil bag to top board again, form spoil bag body of wall 1;
The 4th step,
The mining plastic wire 2 of temporarily rolling is upwards launched to cover the two sides of spoil bag body of wall 2, and the paired steel band 3 that will process again is contained in respectively the two ends of bottom bolts 4 and top bolt 5, and the nut of screwing on is executed and added pretightning force, forms the body of wall stirrup.
Claims (1)
1. gob-side entry retaining support body of wall, it is the thick spoil bag body of wall of 2.5-3.0 rice that assembles with the spoil bag, it is characterized in that spoil bag surface of wall is provided with mining plastic wire, and 2 meters at every interval arranges stirrup at the supporting body of wall; The structure of stirrup is to arrange respectively a corresponding vertical steel band on spoil bag body of wall two sides, again with the vertical steel band tension of stay bolt with the two sides; The M steel band of model that above-mentioned steel band adopts coal mine support to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323598 CN202745881U (en) | 2012-07-05 | 2012-07-05 | Goaf-side entry retaining wall body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323598 CN202745881U (en) | 2012-07-05 | 2012-07-05 | Goaf-side entry retaining wall body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745881U true CN202745881U (en) | 2013-02-20 |
Family
ID=47705297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220323598 Expired - Fee Related CN202745881U (en) | 2012-07-05 | 2012-07-05 | Goaf-side entry retaining wall body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733820A (en) * | 2012-07-05 | 2012-10-17 | 山东新阳能源有限公司 | Gob-side entry retaining support wall and integrated construction method thereof |
| CN103939144A (en) * | 2014-04-28 | 2014-07-23 | 江西理工大学 | Buffer walls continuously arranged at intervals and used for sealing large goaf |
-
2012
- 2012-07-05 CN CN 201220323598 patent/CN202745881U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733820A (en) * | 2012-07-05 | 2012-10-17 | 山东新阳能源有限公司 | Gob-side entry retaining support wall and integrated construction method thereof |
| CN103939144A (en) * | 2014-04-28 | 2014-07-23 | 江西理工大学 | Buffer walls continuously arranged at intervals and used for sealing large goaf |
| CN103939144B (en) * | 2014-04-28 | 2016-01-27 | 江西理工大学 | A kind of consecutive intervals cushion wall for closed large scale mined area |
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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: 20130220 Termination date: 20150705 |
|
| EXPY | Termination of patent right or utility model |