CN105298502B - The construction method of rock hole wall large diameter pipeline Blasting Excavation - Google Patents
The construction method of rock hole wall large diameter pipeline Blasting Excavation Download PDFInfo
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- CN105298502B CN105298502B CN201510850448.7A CN201510850448A CN105298502B CN 105298502 B CN105298502 B CN 105298502B CN 201510850448 A CN201510850448 A CN 201510850448A CN 105298502 B CN105298502 B CN 105298502B
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Abstract
The present invention relates to a kind of pipeline construction method, especially a kind of construction method of large diameter pipeline Blasting Excavation.In order to solve the deficiency of prior art presence, the invention provides a kind of safe operation, the construction method of adaptable rock hole wall large diameter pipeline Blasting Excavation.A kind of construction method of rock hole wall large diameter pipeline Blasting Excavation in the present invention, including surveying and locating, the wind-powered electricity generation pipeline access scope of operation, drilling, powder charge detonation are slagged tap, repaired, cleanup step.Relative to general tunnel using longitudinal drill-blast tunnelling technique, each cyclic advance length section is only 2~4 meters of work efficiency（I~III class surrounding rock), the horizontal drill-blast tunnelling method can once excavate 20 meters, and operating efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of pipeline construction method, especially a kind of construction method of large diameter pipeline Blasting Excavation.
Background technology
Rock hole wall after shaping excavates tube seat, to bury large diameter pipeline, at present, not only lacks correlation
Design, job specfication, also rarely have application example, its new technology, risk are big, difficulty is high.After tunnel excavation, due to surrouding rock stress
Redistribution, joint fissure exposure, concussion of blasting cause the reasons such as wall rock loosening, and hole wall carries out Blasting Excavation tube seat difficulty very again
Greatly, it is careless slightly to be possible to chip off-falling, the landslide even danger of roof fall occur, while blasting quality also is difficult to control.Such as
Using conventional tunnel excavation technology construct, along hole axis longitudinally bore it is quick-fried, because one side is free face, security, adaptability,
There is deficiency in economy, it is desirable to creative solution is carried out in technique and is determined.
The content of the invention
In order to solve the deficiency of prior art presence, the invention provides a kind of safe operation, adaptable rock hole
The construction method of wall large diameter pipeline Blasting Excavation.
A kind of construction method of rock hole wall large diameter pipeline Blasting Excavation in the present invention, comprises the following steps：
(1) surveying and locating：With reference to the aqueduct gradient, tube seat size, upper lower contour of the tube seat in hole wall, axis are released；
Release drilling hole position；
(2) wind, the electric line access scope of operation：In tube seat opposite hole wall drilling pipe line bracket hole；Mounting bracket；Wind, electric line
The scope of operation is extended to along support；
（3）Drilling：Set up drilling platform；Segment length is excavated according to each, is drilled keyhole, periphery by blasting design scheme
Hole；
(4) powder charge is detonated：Selection presses Uncoincided charge with emulsion explosive cartridge；Half second detonator of non-electrical is unified into blasting network,
And be connected to outside hole, detonation is excavated；
（5）Slag tap, repair, clear up：Enter hole according to the suitable mucking machine of tunnel path choosing to slag tap；The explosion face of finishing, is removed
Loosen sillar；Tube seat is cleared up, to reach that concreting base surface requirement is defined.
Preferably, step（1）In, tube seat measurement measures upper lower contour, axis along tube seat axis, arrangement periphery hole,
Keyhole, controls the setting-out error of hole position.
Preferably, step（2）In, wind, electric line are arranged in the hole wall on tube seat opposite, to reduce because of explosion frame again
Vertical, pipeline is moved forward to beyond safe distance in explosion, and explosion extends with the propulsion of working face again after terminating.
Preferably, step（3）In, hole wall tube seat is divided into the round of cloth three, and two rows are periphery hole, and a middle row is to draw
Slotted eye, keyhole is in quincuncial arrangement with periphery hole.
Preferably, step（3）In, the step（3）In, each single Kong Jun is arranged along tube seat axis（Bore quick-fried in longitudinal direction
Method）Or the eyelet in each hole is arranged along tube seat axis, the arranged direction in single hole is identical with tube seat axis direction（Horizontal drilling and blasting method）,
Pitch-row 20cm.
Preferably, step（3）In, periphery hole drilling ultra-deep 10cm, slotting hole drilling ultra-deep 30cm, straight-cut.
Preferably, step（3）In, excavate segment length's control and carry out next section of drilling again within 20 meters, after one section of explosion.
Preferably, step is poly-（4）In, Uncoincided charge is pressed in powder charge, and linear charging density is determined according to explosion bulge test, first route selection
Degree of packing is 200g/m.
Preferably, step is poly-（4）In, two rows periphery hole spaced loading, middle cut hole is used as shock relieve vent.
Preferably, step is poly-（4）In, intermediate row keyhole is all using emptying aperture not powder charge.
Preferably, step is poly-（4）In, detonation uses half second detonator of non-electrical, and light blast hole is arranged up and down and uses two close to section
Cap sensitive.
Preferably, step（5）Slag tap using loading machine submersible in hole, directly dress slag is transported to Dumping Sites.
Beneficial effects of the present invention：
1st, the technical barrier that heavy caliber tube seat Blasting Excavation is carried out in hole wall is solved, brand-new technological achievement is achieved；
2nd, relative to general tunnel using longitudinal drill-blast tunnelling technique, each cyclic advance length section is only 2~4 meters of work efficiency
（I~III class surrounding rock), the horizontal drill-blast tunnelling method can once excavate 20 meters, and operating efficiency is greatly improved；
3rd, explosion cycle-index is reduced, in the case of the uninterrupted excessively stream of tunnel, Blasting Excavation is run to tunnel
Influence is preferably minimized；
4th, the utilization rate of machinery is improved, reduces and keeps away big gun number of times and time, accelerate construction speed, add economic effect
Benefit.
5th, ensure that the safety of tunnel, it is to avoid it is substantial amounts of fall stone scene, no security incident, excavation quality meets pipe laying will
Ask.
6th, compared to the embedded aqueduct of diversion tunnel is excavated again, the duration is shortened, construction costs is reduced.
7th, do not influence the function of existing engineering, reduce project occupation of land, reduce the difficulty of work arrangement, more science,
Environmental protection.
Brief description of the drawings
Fig. 1 is a kind of process chart of the construction method of rock hole wall large diameter pipeline Blasting Excavation.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, but this should not be interpreted as to the above-mentioned theme of the present invention
Scope be only limitted to above-described embodiment.
As shown in figure 1, a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation, comprises the following steps：
（1）Surveying and locating：Lower contour and periphery hole, the position of keyhole, periphery hole position on tube seat are measured along hole axis
In on contour line, keyhole is located in the middle of two rows periphery hole, and each hole hole position deviation requirement is no more than ± 5cm.
（2）Wind, electric line arrangement：On the hole wall for being arranged in the tube seat opposite not influenceed by excavation, highly not less than 1.8m,
Erected again and construction safety because of explosion with reducing, pipeline is moved forward to beyond safe distance in explosion, explosion terminate after again with
Working face extends.
（3）Pore-creating uses YT28 type hand air drills, and keyhole uses straight-cut, is arranged in the middle of two rows light blast hole,
One is set at interval of 20cm along tube seat axis, aperture is 42mm, slotting length ultra-deep 30cm, with excavating about 30 ° of the axis angle of cut；Week
It is lateral opening respectively to arrange a row up and down along tube seat, ultra-deep 10cm identical with keyhole device therefor and technique, the drilling of vertical hole wall,
Away from also be 20cm.
（4）Explosive uses the emulsion of water resistant.Keyhole is emptying aperture, not powder charge；Periphery hole fills Ф 25mm emulsions
Powder stick, primary election linear charging density is 200g/m, is not coupled, and is spaced 1 hole powder charge, middle emptying aperture is as shock relieve vent, and maximum single hop is quick-fried
Broken excavation length control is within 20m.
（5）Detonation：Using half second detonator millisecond detonating, upper row's powder charge light blast hole was drawn simultaneously using 11 sections of non-electrical, half second detonator
Quick-fried, lower row's powder charge light blast hole is ignited simultaneously using 13 sections of non-electrical, half second detonator.
（6）Slag tap, repair, clear up：Hole is entered using 2m3 loading machines and directly fills slag to Dumping Sites, one section is excavated and slags tap one section；
Finishing uses pneumatic pick, and cleaning uses spade.
Listed above is only the specific embodiment of the present invention, it is clear that the invention is not restricted to above example.This area
All deformations that those of ordinary skill directly can export or associate from present disclosure, all should belong to the guarantor of the present invention
Protect scope.
Claims (9)
1. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation, comprises the following steps：
(1) surveying and locating：With reference to the aqueduct gradient, tube seat size, upper lower contour of the tube seat in hole wall, axis are released；Release
Drill hole position；
(2) wind, the electric line access scope of operation：In tube seat opposite hole wall drilling pipe line bracket hole；Mounting bracket；Wind, electric line edge branch
Frame extends to the scope of operation；
（3）Drilling：Set up drilling platform；Segment length is excavated according to each and blasting design scheme is drilled keyhole, periphery hole；
(4) powder charge is detonated：Selection presses Uncoincided charge with emulsion explosive cartridge；Half second detonator of non-electrical is unified into blasting network, and connects
To outside hole, detonation is excavated；
（5）Slag tap, repair, clear up：Enter hole according to the suitable mucking machine of tunnel path choosing to slag tap；The explosion face of finishing, removes and loosens
Sillar；Tube seat is cleared up, to reach that concreting base surface requirement is defined.
2. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 1, it is characterised in that
The step（1）In, tube seat measurement measures upper lower contour, axis, arrangement periphery hole, keyhole, control hole along tube seat axis
The setting-out error of position.
3. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 1, it is characterised in that
The step（2）In, wind, electric line are arranged in the hole wall on tube seat opposite, are erected again because of explosion with reducing, pipeline is in explosion
Move forward to beyond safe distance, explosion extends with the propulsion of working face again after terminating.
4. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 1, it is characterised in that
The step（3）In, hole wall tube seat is divided into the round of cloth three, and two rows are periphery hole, a middle row be keyhole, keyhole with
Periphery hole is in quincuncial arrangement.
5. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 1, it is characterised in that
The periphery hole drilling ultra-deep 10cm, slotting hole drilling ultra-deep 30cm, straight-cut.
6. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 1, it is characterised in that
Segment length's control is excavated every time carries out next section of drilling again within 20 meters, after one section of explosion.
7. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 1, it is characterised in that
The step is gathered（4）In, Uncoincided charge is pressed in powder charge, and linear charging density is determined according to explosion bulge test, and the traditional thread binding density of primary election is 200g/
m。
8. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 4, it is characterised in that
The step is gathered（4）In, two rows periphery hole spaced loading, middle cut hole is used as shock relieve vent.
9. a kind of construction method of rock hole wall large diameter pipeline Blasting Excavation according to claim 1, it is characterised in that
The step（5）Slag tap using loading machine submersible in hole, directly dress slag is transported to Dumping Sites.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510850448.7A CN105298502B (en) | 2015-11-30 | 2015-11-30 | The construction method of rock hole wall large diameter pipeline Blasting Excavation |
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| CN201510850448.7A CN105298502B (en) | 2015-11-30 | 2015-11-30 | The construction method of rock hole wall large diameter pipeline Blasting Excavation |
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| CN105298502B true CN105298502B (en) | 2017-09-01 |
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| CN106382120A (en) * | 2016-09-14 | 2017-02-08 | 中石化石油工程技术服务有限公司 | Detonating tunneling pipe-jacking construction method |
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| JP2015151759A (en) * | 2014-02-14 | 2015-08-24 | 鹿島建設株式会社 | Soundproof device for tunnel |
| CN103868419A (en) * | 2014-03-18 | 2014-06-18 | 北京工业大学 | Smooth surface blasting construction method used in tunnel excavation process in hydraulic engineering |
| CN103851257B (en) * | 2014-03-18 | 2015-10-28 | 国家电网公司 | Based on the trustship construction process in laying cable duct bank |
| CN103983146B (en) * | 2014-05-16 | 2017-01-04 | 河南理工大学 | A kind of hard hard-rock tunnel medium-length hole mixing wedge shape segment algorithm directional fracture Cut Blasting method |
| CN104390535B (en) * | 2014-10-11 | 2016-03-23 | 中国矿业大学(北京) | Hard rock deep hole Cut Blasting method in one |
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