CN106640148A - Permanent reinforcing technology for coal mine underwell superhigh tunnel - Google Patents
Permanent reinforcing technology for coal mine underwell superhigh tunnel Download PDFInfo
- Publication number
- CN106640148A CN106640148A CN201611223396.1A CN201611223396A CN106640148A CN 106640148 A CN106640148 A CN 106640148A CN 201611223396 A CN201611223396 A CN 201611223396A CN 106640148 A CN106640148 A CN 106640148A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- canopy
- shed
- acnemia
- superhigh
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 13
- 238000005516 engineering process Methods 0.000 title abstract description 4
- 230000003014 reinforcing effect Effects 0.000 title abstract 3
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 241000540905 Acnemia Species 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 235000000396 iron Nutrition 0.000 abstract 3
- 238000005553 drilling Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/02—Lining predominantly with wood
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Road Paving Structures (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention concretely relates to a permanent reinforcing technology for a coal mine underwell superhigh tunnel and solves a difficulty of superhigh tunnel support and maintenance. The permanent reinforcing technology for the coal mine underwell superhigh tunnel comprises the following steps of first, setting up a three-centered arced shed on the bottom of a sealing-tap machine tunnel, tightening the back of the shed via a back plate, then setting up a long leg-free shed on the upper part of the back plate and in a direction of a tunnel side perpendicular to a tunnel drifting direction, and at last, drilling a set of nog at one meter over the box irons at intervals. In the second step, the leg-free shed is 4.1m distant from a base plate and the shed distance is 1.0m; a single-layered metal net is placed on the upper part of the leg-free shed; two box irons are set up in the tunnel drifting direction; the box irons are hung on a top plate of the tunnel via anchor cables; and the anchor cables are buried into the top plate. In the last step, each set of nogs are staggered in a zigzag way; and plate beams are arranged on the nogs. Rational structure and practicality and safety are achieved, so that multi-time stress conduction can be realized with the premise of guarantee of safe and stable support and protection; the multi-layered structure can ensure maintainability of all structures, especially support and protection of the superhigh tunnels.
Description
Technical field
The present invention relates to the method for protecting support of coal mine roadway, specially a kind of underground coal mine superelevation tunnel permanent reinforcement technique.
Background technology
Part Coal Mine is down-hole coal bed soft, broken, and in tunnel a layer transitional period section need to be worn, and initially goes down the hill to tunnel phase coal top and stays
If difficult, the serious superelevation in tunnel is caused, if only leaning on to top board, roadway's sides reinforcement anchor cable cannot meet tunnel makes steadily in the long term
With requiring, according to stone cornering arch tunnel surrounding, but its supporting construction rigidity is big, in the huge effect of unevenly pressure and pick
Enter, back production dynamic pressure is repeatedly under disturbance, partial points may be caused to contact and forming stress concentration is destroyed arch body local, cause
Work stone inbreak, brings hidden danger to safety in production on the contrary；Set to upper frame the bottom of from according to grillage, though be conducive to stability of cavern roof, because
Require that laying sealing-tape machine and pipeline, cable and pedestrian concentrate in tunnel, space is difficult to meet crib building requirement.
The content of the invention
The present invention is difficult in order to solve the problems, such as superelevation roadway support, there is provided a kind of underground coal mine superelevation tunnel permanent reinforcement
Technique.
The present invention adopts the following technical scheme that realization：Underground coal mine superelevation tunnel permanent reinforcement technique, including it is following
Step,
a）Set up the three-core shed of a height of 4.1m of a width of 5.0m in sealing-tape machine lane bottom first, wherein canopy leg, capplce are by U-shaped steel
Into after canopy with the backboard back of the body tightly；
b）Secondly the acnemia canopy of long 4.8m is set up in backboard top, lane side vertical working tunneling direction, acnemia canopy away from base plate 4.1m,
Acnemia canopy canopy is made up away from 1.0m, acnemia canopy of I-steel；
c）The single-layer metal net of 50 × 50mm of aperture is laid on acnemia canopy top, and two channel-section steels is set up along tunnelling direction,
Channel-section steel spacing 1m, channel-section steel is hung on back by anchor cable, and anchor cable embedment top board is more than or equal to 2m；
d）Finally, channel-section steel top makes a call to one group of grillage every one meter, and every group of grillage adopts " it " word interlaced arrangement, grillage to set up plate
Beam.
The supporting of acnemia canopy is rigid protection, three-core shed for can receding metal support, radially have certain contracted amount, this group
Conjunction overcomes the pressurized rear grillage of top board and carries release pressure, and the situation of easy press-bending capplce equally overcomes grillage and carries release pressure
The phenomenon of shed is killed after power, it is to avoid three-core shed stress moderate finite deformation is seriously difficult afterwards the situation for carrying out changing maintenance.Should
Structure top board stress, grillage carry release pressure after, anchor cable elder generation stress, acnemia canopy is by pressure transmission to three-core shed, three-core
Shed radially can contracting amount unloading pressure.If it is disrumpent feelings anchor cable occur, top grillage is supported to carry out complement anchor cable dimension using acnemia canopy
Shield；If acnemia canopy stress deformation is serious, radially can contracting amount replacing capplce using three-core shed.
Beneficial effects of the present invention are as follows：The combined supporting mode combined with flexible canopy using rigid canopy, realizes superelevation
The supporting in tunnel.Present configuration is rationally, practical safe, it is ensured that on the premise of supporting safety and stability, to realize multiple stress
Conduction, multi-level structure ensures the structured maintainability of institute, is particularly well-suited to the supporting in superelevation tunnel.
Description of the drawings
Fig. 1 is inventive structure schematic diagram；
In figure, 1- three-core sheds, 2- acnemia canopies, 3- backboards, 4- wire nettings, 5- channel-section steels, 6- plate-girders, 7- grillages, 8- anchor cables.
Specific embodiment
Underground coal mine superelevation tunnel permanent reinforcement technique, comprises the following steps,
a）Set up the three-core shed 1 of a height of 4.1m of a width of 5.0m in sealing-tape machine lane bottom first, wherein canopy leg, capplce are by U-shaped steel
Make, carried on the back tightly with backboard 3 after canopy；
b）Secondly the acnemia canopy 2 of long 4.8m is set up in the top of backboard 3, lane side vertical working tunneling direction, acnemia canopy 2 is away from base plate
4.1m, acnemia canopy canopy is made up away from 1.0m, acnemia canopy 2 of I-steel；
c）The single-layer metal net 4 of 50 × 50mm of aperture is laid on the top of acnemia canopy 2, and two channel-section steels are set up along tunnelling direction
5, spacing 1m of channel-section steel 5, channel-section steel is hung on back by anchor cable 8, and the embedment top board of anchor cable 8 is more than or equal to 2m；
d）Finally, the top of channel-section steel 5 makes a call to one group of grillage 7 every one meter, and every group of grillage 7 adopts " it " word interlaced arrangement, grillage 7 to set up
Plate-girder 6.
In specific implementation process, tunnel about 12m at highest supporting, the high about 6m in lane at minimum supporting, using adjustment grillage layer
Number ensures intact supporting.The canopy leg of three-core shed, capplce are processed using the U-shaped steel of 29U；Acnemia canopy adopts the I-steel of 12#；Groove
Steel specification is 14#*2.3m；Anchor cable adopts 6.3m/8.4/10.3m anchor cables, grillage point of intersection to fix tie rod or using more than 12# lead
Silk is toggled, it is ensured that grillage resistance to overturning.
Claims (1)
1. a kind of underground coal mine superelevation tunnel permanent reinforcement technique, it is characterised in that：Comprise the following steps,
a）Set up the three-core shed of a height of 4.1m of a width of 5.0m in sealing-tape machine lane bottom first（1）, wherein canopy leg, capplce are by U-shaped
Steel is made, and backboard is used after canopy（3）The back of the body is tight；
b）Secondly in backboard（3）Top, lane side vertical working tunneling direction set up the acnemia canopy of long 4.8m（2）, acnemia canopy（2）Away from
Base plate 4.1m, acnemia canopy canopy is away from 1.0m, acnemia canopy（2）It is made up of I-steel；
c）In acnemia canopy（2）Lay the single-layer metal net of 50 × 50mm of aperture in top（4）, and set up two along tunnelling direction
Channel-section steel（5）, channel-section steel（5）Spacing 1m, channel-section steel passes through anchor cable（8）Hang on back, anchor cable（8）Embedment top board is more than or equal to
2m；
d）Finally, channel-section steel（5）Top makes a call to one group of grillage every one meter（7）, every group of grillage（7）Using " it " word interlaced arrangement, wood
Pile（7）Set up plate-girder（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223396.1A CN106640148B (en) | 2016-12-27 | 2016-12-27 | Underground coal mine superelevation tunnel permanent reinforcement technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223396.1A CN106640148B (en) | 2016-12-27 | 2016-12-27 | Underground coal mine superelevation tunnel permanent reinforcement technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640148A true CN106640148A (en) | 2017-05-10 |
| CN106640148B CN106640148B (en) | 2018-11-30 |
Family
ID=58831381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611223396.1A Active CN106640148B (en) | 2016-12-27 | 2016-12-27 | Underground coal mine superelevation tunnel permanent reinforcement technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640148B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798723A (en) * | 2018-06-29 | 2018-11-13 | 河南理工大学 | A kind of superelevation stope drift active workings method for protecting support of the coal containing jacking applied to high seam |
| CN113006816A (en) * | 2021-04-29 | 2021-06-22 | 山西天地王坡煤业有限公司 | Temporary roof-contacting supporting device and construction method |
| CN113669095A (en) * | 2021-08-02 | 2021-11-19 | 中国矿业大学 | Advanced support method applied to ultra-high section of mining roadway |
| CN113738415A (en) * | 2021-09-15 | 2021-12-03 | 淮南矿业(集团)有限责任公司 | Method for plugging coal bunker opening of haulage roadway |
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| CN203022777U (en) * | 2013-01-17 | 2013-06-26 | 贵州盘江精煤股份有限公司 | Shed erection support at underground fork or tunnel opening |
| CN203891905U (en) * | 2014-06-24 | 2014-10-22 | 山西晋城无烟煤矿业集团有限责任公司 | Leg-free shed support |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798723A (en) * | 2018-06-29 | 2018-11-13 | 河南理工大学 | A kind of superelevation stope drift active workings method for protecting support of the coal containing jacking applied to high seam |
| CN113006816A (en) * | 2021-04-29 | 2021-06-22 | 山西天地王坡煤业有限公司 | Temporary roof-contacting supporting device and construction method |
| CN113006816B (en) * | 2021-04-29 | 2023-09-19 | 山西天地王坡煤业有限公司 | Temporary roof-connecting supporting device and construction method |
| CN113669095A (en) * | 2021-08-02 | 2021-11-19 | 中国矿业大学 | Advanced support method applied to ultra-high section of mining roadway |
| CN113738415A (en) * | 2021-09-15 | 2021-12-03 | 淮南矿业(集团)有限责任公司 | Method for plugging coal bunker opening of haulage roadway |
| CN113738415B (en) * | 2021-09-15 | 2023-12-26 | 淮南矿业(集团)有限责任公司 | Method for plugging coal bunker opening of forward and backward roadway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106640148B (en) | 2018-11-30 |
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