CN107461205A - A kind of construction method for expanding brush day drop shaft - Google Patents
A kind of construction method for expanding brush day drop shaft Download PDFInfo
- Publication number
- CN107461205A CN107461205A CN201710873405.XA CN201710873405A CN107461205A CN 107461205 A CN107461205 A CN 107461205A CN 201710873405 A CN201710873405 A CN 201710873405A CN 107461205 A CN107461205 A CN 107461205A
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- China
- Prior art keywords
- brush
- drop shaft
- day drop
- construction method
- reaming
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000004880 explosion Methods 0.000 claims abstract description 11
- 230000001680 brushing effect Effects 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 238000005422 blasting Methods 0.000 description 7
- 239000004575 stone Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- E21D9/10—Making by using boring or cutting machines
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of construction method for expanding brush day drop shaft, comprise the following steps：The first step, pilot hole is outputed vertically along day drop shaft center line；Second step, reaming is carried out by anti-well rig from below to up to the counterbored area around the pilot hole；3rd step, after reaming, blasthole is arranged in the expansion brush region around the counterbored area, by the way that blasthole to be carried out to explosion from below to up to carry out expansion brush to the brush region of expanding, the borehole wall for brushing the day drop shaft is expanded in the brush region of expanding.The construction method solve expand brush speed it is slow, Pass blocks problem, ensure that working security, reduce construction cost.
Description
Technical field
The present invention relates to orebody mining technical field, more particularly to a kind of construction method for expanding brush day drop shaft.
Background technology
In mine construction and production phase, people from mine row ventilation shaft, Stope chute, stage casing drop shaft are all a lot.In order to ensure
Construction safety is generally constructed using anti-well rig.
When being constructed using mine shaft rising boring, typically can not once it construct to day drop shaft design section, it is also necessary to which forward direction expands brush, will
Enlarged-diameter is to design section.As depicted in figs. 1 and 2, job platform 31 is located at the rig cave of the top of day drop shaft 30 to prior art
In room 10, using the positive expansion brush region 34 for expanding brush day drop shaft 30, blasthole 35 is arranged vertically on day drop shaft borehole wall；When expanding brush,
Inspection sled will be carried out to the float stone of the borehole wall by often expanding one big gun of brush, and need interim spray concrete supporting；Drilling depth is in 3-4m, circulation time
Number is more；Therefore prior art is positive expands the brush borehole wall, expand brush speed causes that speed of application is slow, and cyclic advance is limited slowly, and is constructing
During bulk rubble it is more, debris is transferred by the pit shaft of minor diameter, it is easy to causes a day Pass blocks, it is hidden to produce safety
Suffer from.
The content of the invention
Based on drawbacks described above, solving day drop shaft it is an object of the invention to provide one kind, to expand brush speed slow, is expanding swiped through journey
The construction method of the quick expansion brush day drop shaft of middle Pass blocks, this method are quickly expanded from bottom to top using brush is reversely expanded
Brush, ensure that speed of application, avoids potential safety hazard caused by Pass blocks, while reduce construction cost.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of construction method for expanding brush day drop shaft, this method comprise the following steps：
The first step, pilot hole is outputed vertically along day drop shaft center line；
Second step, reaming is carried out by anti-well rig from below to up to the counterbored area around the pilot hole；
3rd step, after reaming, blasthole is arranged in the expansion brush region around the counterbored area, by by blasthole from it is lower and
To carry out expansion brush to expanding brush region, the borehole wall for brushing the day drop shaft is expanded in the brush region of expanding for upper progress explosion.
Preferably, the top of day drop shaft is rig chamber, and rig chamber connects with brattice way, is lower section below day drop shaft
Chamber, in the second step, the workbench of the anti-well rig is placed in the lower section chamber, from bottom to top to be expanded
Hole, a large amount of float stones are produced so as to avoid to damage the borehole wall.
Preferably, in the first step, the anti-well rig that is placed in the rig chamber is along day drop shaft center line
The lower section chamber is drilled into from top to down, outputs pilot hole, so that the anti-well rig being drilled into the lower section chamber is under
And upper carry out second step.Boring direction is must be noted that during drilling, it is impossible to bore folk prescription to.
Preferably, after the drilling rod of the anti-well rig is drilled into lower section chamber, in the second step, in the anti-well rig
Drilling rod bottom installation reaming cutterhead, the rock in the counterbored area is shredded by cornish bit disc spins, with from bottom to top
Reaming is carried out to counterbored area, at the upper aperture of reaming to the pilot hole.
Preferably, in the second step and the 3rd step, after reaming and expansion brush, waste residue falls into the lower section chamber, passes through
Mucking machine transports spoil area to.
Preferably, in the 3rd step, horizontally disposed blasthole in brush region is expanded described from below to up, with from below to up
Carry out explosion.
Preferably, the blasthole is horizontally disposed a row or multi-row.
Preferably, explosion is carried out using short-delay blasting method.Short-delay blasting method can reduce explosion to job platform, the borehole wall
Destroy, cyclic advance is unrestricted.
It is highly preferred that multiple rows of blasthole uses short-delay blasting, the cyclic advance in vertical direction is unrestricted, circulate into
Chi can be 4-10m.
Preferably, pilot hole internal diameter is determined by anti-well rig used, can be 250mm, and day drop shaft external diameter is 2.5-3.5m,
The anti-well rig carries out a diameter of 1.2-1.5m of the counterbored area of reaming formation.Using the borehole wall of anti-well drilling machine construction
Smooth, float stone is less.
Preferably, in the 3rd step, stable car is arranged in the brattice way, stable car operating side is suspended in the day
It is used to arrange blasthole in drop shaft.
Beneficial effect：
The construction method that the present invention expands brush day drop shaft is brushed using reversely expansion, is carried out expansion brush to the borehole wall from bottom to top, safety, is expanded
Brush speed is fast, and expands every time after the completion of brush, and mineshaft diameter becomes big, and the debris expanded after brush is transferred by the pit shaft of major diameter, can
To release in time, it is not easy to block pit shaft；Reaming is carried out from bottom to top, carries out expansion brush from bottom to top, and level can arrange multiple rows of
Blasthole, multiple rows of blasthole carry out a short-delay blasting, and cyclic advance is unrestricted, and drilling depth can reach 10m or so, and step is simple,
It ensure that speed of application；And expanding brush construction every time all to carry out in the former borehole wall, the former general smoother of the borehole wall, float stone is less,
Security is higher；Reduce gib process during brush is expanded simultaneously, save cost.
Brief description of the drawings
Fig. 1 is the positive construction schematic diagram for expanding brush day drop shaft of prior art；
Fig. 2 is the diagrammatic cross-section at A-A in Fig. 1；
Use state figure when Fig. 3 is drop shaft of the present invention anti-well rig reaming；
Fig. 4 is the diagrammatic cross-section at A-A in Fig. 3；
Fig. 5 is the construction schematic diagram of the invention for reversely expanding brush day drop shaft；
Fig. 6 is the diagrammatic cross-section at A-A in Fig. 5.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes：
As seen in figures 3-6, the present invention provides a kind of construction method for expanding brush day drop shaft, and this method comprises the following steps：The
One step, as shown in Figure 3-4, pilot hole 32 is outputed vertically downwards along the center line of day drop shaft 30；Second step, as shown in Figure 3-4, pass through
Anti- well rig 80 carries out reaming from below to up to the counterbored area 33 around the pilot hole 32；3rd step, as seen in figs. 5-6,
After reaming, blasthole 35 is arranged in the expansion brush region 34 around counterbored area 33, by the way that blasthole 35 is carried out into explosion from below to up
To carry out expansion brush to expanding brush region 34, expand the borehole wall for brushing day drop shaft 30 from expansion brush region 34.
The present invention is used reversely to expand and brushed, and carries out expansion brush to the borehole wall from bottom to top, and safety, expansion brush speed is fast, and expands every time
After the completion of brush, mineshaft diameter becomes big, and the debris expanded after brush is transferred by the pit shaft of major diameter, it is not easy to blocks pit shaft.
The present embodiment, the top of day drop shaft 30 is rig chamber 10, and rig chamber 10 connects with brattice way 11, day drop shaft
30 lower sections are lower section chamber 20, in second step, in the workbench chamber 20 placed below of anti-well rig 80, with from bottom to top
Carry out ream operation.In the present embodiment, the design external diameter of day drop shaft 30 is 3.0m, and the design internal diameter of day drop shaft 30 is 2.5m；
The anti-well rig 80 that counter bore diameter is 1.2-1.5m is employed during construction day drop shaft 30, further, counter bore diameter 1.2m, is expanded
After hole, using the reverse brush drop shaft that expands to intended diameter 2.5m, the pit shaft borehole wall that anti-well rig 80 is constructed is smooth, float stone compared with
Few, waste residue 60 falls directly into lower section chamber 20, and spoil area is transported to by mucking machine.
First, in the first step, the anti-well rig 80 being placed in rig chamber 10 is along the center line of day drop shaft 30 to next time
Property get into lower section chamber 20, output internal diameter be 250mm pilot hole 32, bore pilot hole 32 when must be noted that boring direction, it is impossible to
Bore folk prescription to；In second step, after the drilling rod 81 of anti-well rig 80 is drilled into lower section chamber 20, reaming is installed in the bottom of drilling rod 81
Cutterhead 82, the rock in chopping counterbored area 33 is rotated by reaming cutterhead 82, to the counterbored area around the pilot hole 32
33 carry out reaming from bottom to top, and reaming is at aperture, the waste residue 60 after reaming falls into lower section chamber 20, leads on the pilot hole 32
Cross mucking machine and transport spoil area to；After reaming, then region 34 is brushed to expansion in brush region 34 is expanded from below to up and carries out expanding brush simultaneously cloth
Horizontal blasthole 35 is put, stable car 90 is fixed in brattice way 11, the operating side of stable car 90 is suspended in day drop shaft 30, carries out blasthole
Arrangement, be easy to expand brushing and put blasthole 35 and operate.
In the present embodiment, expansion brush is carried out using region 34 is brushed to expansion from below to up, from below to up horizontally disposed blasthole 35, from
Lower and upper carry out explosion；The blasthole 35 can once arrange a row or multi-row；Job platform, the borehole wall are broken to reduce explosion
It is bad, explosion is carried out using short-delay blasting method, blasting sequence is carried out successively from below to up, and cyclic advance is unrestricted；It is multiple rows of described
Blasthole 35 uses short-delay blasting so that cyclic advance is up to 10m or so.The embodiment step is simple, and expansion brush speed is fast, security
It is higher, and expand every time after the completion of brush, mineshaft diameter becomes big, and the debris expanded after brush is transferred by the pit shaft of major diameter, it is not easy to
Block pit shaft；Reduce gib process during brush is expanded simultaneously, save cost.
The preferred embodiment of the present invention is described above in association with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, is not restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make very
Multi-form, these are belonged within the scope of the present invention.
Claims (10)
1. a kind of construction method for expanding brush day drop shaft, comprises the following steps：
The first step, pilot hole is outputed vertically along day drop shaft center line；
Second step, reaming is carried out by anti-well rig from below to up to the counterbored area around the pilot hole；
3rd step, after reaming, blasthole is arranged in the expansion brush region around the counterbored area, by the way that blasthole is entered from below to up
To carry out expansion brush to the brush region of expanding, the borehole wall for brushing the day drop shaft is expanded in the brush region of expanding for row explosion.
2. expand the construction method of brush day drop shaft as claimed in claim 1, it is characterised in that the top of day drop shaft is rig cave
Room, rig chamber connect with brattice way, are lower section chamber below day drop shaft, in the second step, the anti-well rig
Workbench is placed in the lower section chamber, from bottom to top to carry out reaming.
3. expand the construction method of brush day drop shaft as claimed in claim 2, it is characterised in that in the first step, be placed in institute
The anti-well rig stated in rig chamber is drilled into the lower section chamber from top to down along day drop shaft center line, outputs pilot hole,
So that the anti-well rig being drilled into the lower section chamber carries out second step from below to up.
4. expand the construction method of brush day drop shaft as claimed in claim 3, it is characterised in that the drilling rod of the anti-well rig is drilled into
After the chamber of lower section, in the second step, the bottom installation reaming cutterhead of the drilling rod of the anti-well rig, spiraled by cornish bit
Turn the rock in the chopping counterbored area, to carry out reaming to counterbored area from bottom to top, reaming is upper to the pilot hole
At aperture.
5. expand the construction method of brush day drop shaft as claimed in claim 4, it is characterised in that in the second step and the 3rd step
In, after reaming and expansion brush, waste residue falls into the lower section chamber, and spoil area is transported to by mucking machine.
6. expand the construction method of brush day drop shaft as claimed in claim 1, it is characterised in that in the 3rd step, from lower
On it is described expand brush region in horizontally disposed blasthole, to carry out explosion from below to up.
7. expand the construction method of brush day drop shaft as claimed in claim 6, it is characterised in that the horizontally disposed row of the blasthole or
It is multiple rows of.
8. expand the construction method of brush day drop shaft as claimed in claim 7, it is characterised in that multiple rows of blasthole is quick-fried using elementary errors
It is broken, cyclic advance 4-10m.
9. the construction method for expanding brush day drop shaft as described in claim any one of 1-8, it is characterised in that the anti-well rig enters
The a diameter of 1.2-1.5m for the counterbored area that row reaming is formed.
10. expand the construction method of brush day drop shaft as claimed in claim 2, it is characterised in that in the 3rd step, on top
Stable car is arranged in tunnel, stable car operating side, which is suspended in the day drop shaft, to be used to arrange blasthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710873405.XA CN107461205A (en) | 2017-09-25 | 2017-09-25 | A kind of construction method for expanding brush day drop shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710873405.XA CN107461205A (en) | 2017-09-25 | 2017-09-25 | A kind of construction method for expanding brush day drop shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107461205A true CN107461205A (en) | 2017-12-12 |
Family
ID=60553108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710873405.XA Pending CN107461205A (en) | 2017-09-25 | 2017-09-25 | A kind of construction method for expanding brush day drop shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107461205A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331612A (en) * | 2018-01-31 | 2018-07-27 | 山东烟台鑫泰黄金矿业有限责任公司 | A kind of cutting method of ore pass |
| CN108343455A (en) * | 2017-12-28 | 2018-07-31 | 浙江省隧道工程公司 | Binary channels underground chamber construction method |
| CN108915693A (en) * | 2018-06-25 | 2018-11-30 | 贵州开磷集团股份有限公司 | A kind of construction method of the ladder pipeline well on inclined orebody |
| CN110107301A (en) * | 2019-04-09 | 2019-08-09 | 北京中煤矿山工程有限公司 | A kind of mechanical rock breaking sinking method of positive-reversed-positive three-level drilling |
| CN110541711A (en) * | 2019-09-03 | 2019-12-06 | 山东唐口煤业有限公司 | method for strengthening underground chamber brush |
| CN112412502A (en) * | 2020-12-16 | 2021-02-26 | 中铁四局集团有限公司 | Excavation method for one-step blasting forming of cave depot tank body |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343455A (en) * | 2017-12-28 | 2018-07-31 | 浙江省隧道工程公司 | Binary channels underground chamber construction method |
| CN108331612A (en) * | 2018-01-31 | 2018-07-27 | 山东烟台鑫泰黄金矿业有限责任公司 | A kind of cutting method of ore pass |
| CN108915693A (en) * | 2018-06-25 | 2018-11-30 | 贵州开磷集团股份有限公司 | A kind of construction method of the ladder pipeline well on inclined orebody |
| CN110107301A (en) * | 2019-04-09 | 2019-08-09 | 北京中煤矿山工程有限公司 | A kind of mechanical rock breaking sinking method of positive-reversed-positive three-level drilling |
| CN110541711A (en) * | 2019-09-03 | 2019-12-06 | 山东唐口煤业有限公司 | method for strengthening underground chamber brush |
| CN112412502A (en) * | 2020-12-16 | 2021-02-26 | 中铁四局集团有限公司 | Excavation method for one-step blasting forming of cave depot tank body |
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Application publication date: 20171212 |
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