CN104612726A - Support method for mine workings - Google Patents
Support method for mine workings Download PDFInfo
- Publication number
- CN104612726A CN104612726A CN201410732791.7A CN201410732791A CN104612726A CN 104612726 A CN104612726 A CN 104612726A CN 201410732791 A CN201410732791 A CN 201410732791A CN 104612726 A CN104612726 A CN 104612726A
- Authority
- CN
- China
- Prior art keywords
- supporting
- net
- bolt
- spray
- anchor
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000003245 working effect Effects 0.000 title abstract 3
- 238000010276 construction Methods 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims abstract description 9
- 239000004567 concrete Substances 0.000 claims abstract description 5
- 238000009423 ventilation Methods 0.000 claims abstract description 4
- 230000008093 supporting effect Effects 0.000 claims description 41
- 239000007921 spray Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000011378 shotcrete Substances 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002360 explosive Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 11
- 238000005065 mining Methods 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 3
- 238000005422 blasting Methods 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 11
- 238000011160 research Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor 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)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a support method for mine workings, in particular to a method for one-time reinforcement forming support for mine workings. The method is characterized in that the whole support process includes the first step of carrying out blasting and ventilation; the second step of carrying out wall tapping and roof sounding safety check; the third step of punching an upper hole; the fourth step of performing burring parallel to the operation of drilling the upper hole; the fifth step of drilling an anchor shaft eyelet for performing anchor network construction; the sixth step of spraying concrete; the seventh step of drilling a lower hole for blasting; the eighth step of performing deburring and cleaning the bottom. Practice has proved that the support method can effectively restrain cracking and deformation of down-hole projects, can be widely applied to exploitation and accurate mining of roadways within 15m<2> underground mines, mining area roadways short in service time and various section roadways with good rock structures and stability.
Description
Technical field
A supporting method for mine working, the method for particularly a kind of mine working primary reinforcement shaping supporting.
Background technology
For the mine deep exploitation of rock mechanics possessing extremely complicated geology background, special Geological Environment Engineering and broken swollen creep, the supporting principle of original " first soft just rear; first to allow and resist afterwards " always continued to use, do not meet the deformation-failure character of deep tunnel, tunnel shows presses greatly, and supporting difficulty is large, and cost is high, drastically influence construction speed, make mine deep Roadway Support Technology problem very outstanding.
Summary of the invention
Object of the present invention is exactly the deficiency of depositing for above-mentioned prior art, the craze and transfiguration that effectively can suppress down-hole engineering is provided, can be widely used in the developing of mine down-hole 15 below ㎡, development heading, the mining roadway that service time is shorter, and the supporting method of the mine working of all kinds of section tunnels of rock mass structure and good stability.
The object of the invention is to be achieved through the following technical solutions.
A supporting method for mine working, is characterized in that the step of its Bracing Process comprises:
(1) blow out and ventilation;
(2) safety inspection is tapped;
(3) upper eye is beaten;
(4) go out hair, and play upper eye parallel operations;
(5) beat square and carry out the construction of anchor net;
(6) concrete is sprayed;
(7) beat lower eye to blow out;
(8) the hair clear end is gone out.
The supporting method of a kind of mine working of the present invention, what it is characterized in that its step (5) plays the anchor pole employing finish rolling deformed bar making that square carries out the construction of anchor net, arch, tunnel bolt diameter is Φ 22mm, roadway's sides bolt diameter is Φ 18mm, anchor pole row, spacing are 0.6m, arrange in blossom type between row and row, anchor pole fastening end adopts the thickening fastening nuts supporting with fining twisted steel, roof bolt plate is the butterfly backing plate of the general steel plate making that employing 200 × 200 × 10mm is thick, adopts resin explosive roll full length fastening; Wire lath adopts φ 6.5mm reinforcement fabrication, and net degree is 150 × 150mm; The thickness of sprayed mortar is 200mm, and sprayed concrete strength grade is C30.
The supporting method of a kind of mine working of the present invention, is characterized in that the working procedure that supporting is taked " pick one Bolt net and jet, the multiple spray of three picks one ".
The supporting method of a kind of mine working of the present invention, is characterized in that the working procedure that supporting is taked " pick one element spray one Bolt net and jet, the multiple spray of two picks one ".
The supporting method of a kind of mine working of the present invention, is characterized in that the working procedure that supporting is taked " a pick one element spray one anchor net bow member spray, the multiple spray of two picks one ".
The supporting method of a kind of mine working of the present invention, by studying serial mine down-hole tunnel field test results, the conforming of the double-deck bolt-mesh-spurting supporting principle that mine down-hole is now implemented, Support types and parameter are dissected, study and establish support theory, the support technology of a set of mine individual layer Bolt net and jet, and belonging to this feature of New Supporting technique for individual layer bolt-mesh-spurting supporting technique, a set of scientific and efficient construction technology and matching operation method are established in research.
The mine individual layer shotcrete rock bolt wire mesh support theory of method of the present invention and supporting principle, and supporting construction method is as follows:
(1) existing double-deck conforming of shotcrete rock bolt wire mesh support principle is dissected, research establishes the supporting theory architecture of a set of mine individual layer Bolt net and jet, establishes " the primary reinforcement support technology " of individual layer bolt-mesh-spurting supporting, prop " pressure release unstability " pattern and control technology, " non-homogeneous " support technology and operating principle, " distortion does not restrain " principle and control technology, linksystem deformation failure models and control technology, pinking dynamic pressure destruct limit technical know-how.
(2) research establish " first just soft, rear reinforcement, then execute just " or " first just soft, rear reinforcement, more soft just " supporting principle.
(3) this feature of New Supporting technique is belonged to for individual layer bolt-mesh-spurting supporting technique, the efficient construction method that research establishes " pick one Bolt net and jet, two picks or the multiple spray of three picks one ".
(4) research establishes the applicable object of individual layer bolt-mesh-spurting supporting and conforms, and is namely applicable to the developing of 15 below ㎡, development heading, the mining roadway that service time is shorter, and all kinds of section tunnels of rock mass structure and good stability.
By repeatedly many locations informal test, obtain first-stage success, compare with former support process with the supporting effect of parameter, its initial support body deformability cracking obtains effective control, have accumulated some engineering experiences, for individual layer Bolt net and jet primary reinforcement shaping support technology provides practical basis.
The supporting method of a kind of mine working of the present invention, effectively can suppress the craze and transfiguration of down-hole engineering, can be widely used in the developing of mine down-hole 15 below ㎡, development heading, the mining roadway that service time is shorter, and all kinds of section tunnels of rock mass structure and good stability.
Detailed description of the invention
A supporting method for mine working, the step of its Bracing Process comprises: (1) blows out and ventilation; (2) safety inspection is tapped; (3) upper eye is beaten; (4) go out hair, and play upper eye parallel operations; (5) beat square and carry out the construction of anchor net; (6) concrete is sprayed; (7) beat lower eye to blow out; (8) the hair clear end is gone out.
Embodiment
1, support process parameter.Implement to implement according to summary of the invention at certain annular Ore Transportation tunnel, stage casing, down-hole, mining area 850 14# ~ 13# point, amount to 300m.Supporting parameter is that anchor pole adopts finish rolling deformed bar to make, arch, tunnel adopts diameter to be Φ 22mm, length is 3.0m, roadway's sides adopts diameter to be Φ 18mm, and length is 2.25m, and anchor pole row, spacing are 0.6m, arrange in blossom type between row and row, anchor pole fastening end adopts the thickening fastening nuts supporting with fining twisted steel, and roof bolt plate is the butterfly backing plate of the general steel plate making that employing 200 × 200 × 10mm is thick, adopts resin explosive roll full length fastening; Wire lath adopts φ 6.5mm reinforcement fabrication, and net degree is 150 × 150mm; The thickness of sprayed mortar is 200mm, and sprayed concrete strength grade is C30; Wide=the 4.2m of tunnel pick, dig high=3.65m, excavated section amasss S pick=13.666m
2.
Main construction techniques and method.The working procedure of " pick one Bolt net and jet, the multiple spray of three picks one " is taked when surrounding rock stability is better; During surrounding rock stability difference " pick one element spray one Bolt net and jet, the multiple spray of two picks one "; The a set of rational individual layer shot anchor net construction technology of " a pick one element spray one anchor net bow member spray, the multiple spray of two picks one " and method when surrounding rock stability is poor.
Technical process.Blow out with ventilate, tap safety inspection → beat upper eye → go out hair (with playing upper eye parallel operations) → beat square carry out anchor net construction → spray concrete (spray this circulation, again spray circulate and upper cocycle) → beat lower eye to blow out → go out at the hair clear end.
Implementation result.Arrange one group by every 10m, arrange 5 measuring points for one group, the displacement observation in tunnel of carrying out having constructed, compare with double-deck Bolt net and jet tunnel, location with former design, test section roadway deformation amount is less simultaneously.And testing gallery all drops into mining production and application at present, reprocesses.Result shows, this support process effectively controls the craze and transfiguration of roadway surrounding rock, improves stability.
Claims (5)
1. a supporting method for mine working, is characterized in that the step of its Bracing Process comprises:
(1) blow out and ventilation;
(2) safety inspection is tapped;
(3) upper eye is beaten;
(4) go out hair, and play upper eye parallel operations;
(5) beat square and carry out the construction of anchor net;
(6) concrete is sprayed;
(7) beat lower eye to blow out;
(8) the hair clear end is gone out.
2. the supporting method of a kind of mine working according to claim 1, what it is characterized in that its step (5) plays the anchor pole employing finish rolling deformed bar making that square carries out the construction of anchor net, arch, tunnel bolt diameter is Φ 22mm, roadway's sides bolt diameter is Φ 18mm, anchor pole row, spacing are 0.6m, arrange in blossom type between row and row, anchor pole fastening end adopts the thickening fastening nuts supporting with fining twisted steel, roof bolt plate is the butterfly backing plate of the general steel plate making that employing 200 × 200 × 10mm is thick, adopts resin explosive roll full length fastening; Wire lath adopts φ 6.5mm reinforcement fabrication, and net degree is 150 × 150mm; The thickness of sprayed mortar is 200mm, and sprayed concrete strength grade is C30.
3. the supporting method of a kind of mine working according to claim 1, is characterized in that the working procedure that supporting is taked " pick one Bolt net and jet, the multiple spray of three picks one ".
4. the supporting method of a kind of mine working according to claim 1, is characterized in that the working procedure that supporting is taked " pick one element spray one Bolt net and jet, the multiple spray of two picks one ".
5. the supporting method of a kind of mine working according to claim 1, is characterized in that the working procedure that supporting is taked " a pick one element spray one anchor net bow member spray, the multiple spray of two picks one ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732791.7A CN104612726A (en) | 2014-12-07 | 2014-12-07 | Support method for mine workings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732791.7A CN104612726A (en) | 2014-12-07 | 2014-12-07 | Support method for mine workings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104612726A true CN104612726A (en) | 2015-05-13 |
Family
ID=53147351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410732791.7A Pending CN104612726A (en) | 2014-12-07 | 2014-12-07 | Support method for mine workings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104612726A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443151A (en) * | 2015-11-25 | 2016-03-30 | 怀宁县明月矿山开发有限责任公司 | Method for supporting mine roadway |
| CN114048593A (en) * | 2021-10-26 | 2022-02-15 | 河北钢铁集团沙河中关铁矿有限公司 | Method for optimizing anchor net spraying support parameters of complex roadway |
-
2014
- 2014-12-07 CN CN201410732791.7A patent/CN104612726A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443151A (en) * | 2015-11-25 | 2016-03-30 | 怀宁县明月矿山开发有限责任公司 | Method for supporting mine roadway |
| CN114048593A (en) * | 2021-10-26 | 2022-02-15 | 河北钢铁集团沙河中关铁矿有限公司 | Method for optimizing anchor net spraying support parameters of complex roadway |
| CN114048593B (en) * | 2021-10-26 | 2024-05-03 | 河北钢铁集团沙河中关铁矿有限公司 | Complex roadway anchor net spray support parameter optimization method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |
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| WD01 | Invention patent application deemed withdrawn after publication |