CN110145315A - A kind of driving method weakening city shallow tunnel concussion of blasting - Google Patents
A kind of driving method weakening city shallow tunnel concussion of blasting Download PDFInfo
- Publication number
- CN110145315A CN110145315A CN201910392462.5A CN201910392462A CN110145315A CN 110145315 A CN110145315 A CN 110145315A CN 201910392462 A CN201910392462 A CN 201910392462A CN 110145315 A CN110145315 A CN 110145315A
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- Prior art keywords
- predicament
- top bar
- blasting
- concussion
- embarrassing situation
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Classifications
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- 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
- 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
- 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
- E21D20/00—Setting anchoring-bolts
-
- 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
-
- 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
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of driving method for weakening city shallow tunnel concussion of blasting, include the following steps: that broken digging machine or cantilever excavator is selected to carry out cold digging operation to top bar rock mass according to section size；Top bar dregs is slagged tap；Top bar erects steel arch-shelf and sets anchor pole；Top bar pneumatically placed concrete；It gets out of a predicament or an embarrassing situation Blasting Excavation；Dregs of getting out of a predicament or an embarrassing situation is slagged tap；It gets out of a predicament or an embarrassing situation and erects steel arch-shelf and set anchor pole；Pneumatically placed concrete of getting out of a predicament or an embarrassing situation closing；Inverted arch applies.Tunnel top bar of the present invention is got out of a predicament or an embarrassing situation and inverted arch step excavation, each workspace process independently carry out, and be independent of each other interference, and speed of application is significantly improved；Tunnel inverted arch just props up quickly closure in time, closely follows face, and effective deformation controlling for rock surrounding gateways guarantees the quality and safety of constructing tunnel；Biggish shock insulation band and free face are provided after the cold digging of top bar, get out of a predicament or an embarrassing situation explosion when so that concussion of blasting reduces, mitigate influence of the explosion to resident.
Description
Technical field
The present invention relates to technical field of tunnel construction, it particularly relates to a kind of decrease city shallow tunnel concussion of blasting
Driving method.
Background technique
At present hard, generally use compared with soft rock tunnel drilling and blasting method excavation.When being in complex environment, city is especially passed through
When, upper part often there are many buildings or structures, scenic spots and historical sites etc., concussion of blasting in construction to the structures of buildings or structures and
The resident of periphery life can have an adverse effect.Therefore, it is necessary to take glissando or use damping excavation technology.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes a kind of to weaken city shallow tunnel concussion of blasting
Driving method can overcome the above-mentioned deficiency of the prior art.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
A kind of driving method weakening city shallow tunnel concussion of blasting, includes the following steps:
S1: broken digging machine or cantilever excavator is selected to carry out cold digging operation to top bar rock mass according to section size；
S2: top bar dregs is slagged tap；
S3: top bar erects steel arch-shelf and sets anchor pole, specifically:
S3.1: the loose slag of top bar face arch springing or corner position is cleaned out；
S3.2: using the first branch rack of face, the arch clipping room determined according to design drawing is away from installation steel arch-shelf；
S3.3: being welded to connect muscle and reinforced mesh, installs lock foot anchoring stock and system anchor bolt；
S4: top bar pneumatically placed concrete；
S5: Blasting Excavation of getting out of a predicament or an embarrassing situation；
S6: dregs of getting out of a predicament or an embarrassing situation is slagged tap；
S7: getting out of a predicament or an embarrassing situation and erect steel arch-shelf and set anchor pole, specifically:
S7.1: steel arch-shelf is installed after the loose slag of arch springing position is cleaned out；
S7.2: up/down steps steel arch-shelf is connected using bolt；
S7.3: being welded to connect muscle and reinforced mesh, installs lock foot anchoring stock and system anchor bolt；
S8: pneumatically placed concrete of getting out of a predicament or an embarrassing situation closing；
After S9: inverted arch applies, and supporting in the early stage all closes cyclization, lining construction operation is carried out.
Further, in step S1, the cold every cyclic advance for digging operation is determined according to country rock situation, generally no greater than 2 Pin
Steelframe spacing.
Preferably, step S2 specifically: in top bar digging process, face is crushed dregs using mini-excavator
It takes off and is transported to rear, then the dregs at rear is transported to outside hole using transport vehicle.
Preferably, it in step S3.2, is attached between steel arch-shelf each unit using steel plate, angle steel and bolt.
Preferably, in step S4, top bar pneumatically placed concrete uses wet spraying process, and spraying operation segmentation, fragment, layering,
From bottom to top, spiral successively carries out.
Preferably, it when in top bar pneumatically placed concrete if any larger calixconcavity, is first filled and led up, guarantees that preliminary bracing and scar are close
Patch makes steel arch-shelf and spray anchor at supporting entirety stress, to inhibit surrouding rock deformation.
Preferably, in step S5, Blasting Excavation of getting out of a predicament or an embarrassing situation takes the construction principle of " more perforatings, few powder charge, be segmented " more, and
According to the country rock situation that every circulation face discloses, borehole arrangement parameter is adjusted in time, optimizes Blasting Excavation scheme.
Preferably, step S6 specifically: excavate face rear portion getting out of a predicament or an embarrassing situation using mini-excavator or rollover loading machine
Operation of slagging tap is carried out, and dregs is transported to outside hole using transport vehicle.
Preferably, in step S8, pneumatically placed concrete of getting out of a predicament or an embarrassing situation uses wet spraying process, and spraying operation segmentation, fragment, layering,
From bottom to top, spiral successively carries out.
Beneficial effects of the present invention: the present invention has the advantage that as follows with effect:
1, tunnel top bar, get out of a predicament or an embarrassing situation and inverted arch step excavation, each workspace process independently carry out, be independent of each other interference, applies
Work speed is significantly improved.
2, tunnel inverted arch just props up quickly closure in time, closely follows face, and effective deformation controlling for rock surrounding gateways guarantees constructing tunnel
Quality and safety.
3, biggish shock insulation band and free face are provided after the cold digging of top bar, get out of a predicament or an embarrassing situation explosion when so that concussion of blasting drop
It is low, mitigate influence of the explosion to resident.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the schematic diagram of the benching tunnelling method section excavation described according to embodiments of the present invention；
In figure: 1, top bar excavates the soil body；2, it gets out of a predicament or an embarrassing situation and excavates the soil body；3, inverted arch excavates the soil body；4, inverted arch has been applied.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
The driving method of a kind of decrease city shallow tunnel concussion of blasting according to embodiments of the present invention, including it is as follows
Step:
S1: broken digging machine or cantilever excavator is selected to carry out cold digging operation to top bar rock mass according to section size；
S2: top bar dregs is slagged tap；
S3: top bar erects steel arch-shelf and sets anchor pole, specifically:
S3.1: the loose slag of top bar face arch springing or corner position is cleaned out；
S3.2: using the first branch rack of face, the arch clipping room determined according to design drawing is away from installation steel arch-shelf；
S3.3: being welded to connect muscle and reinforced mesh, installs lock foot anchoring stock and system anchor bolt；
S4: top bar pneumatically placed concrete；
S5: Blasting Excavation of getting out of a predicament or an embarrassing situation；
S6: dregs of getting out of a predicament or an embarrassing situation is slagged tap；
S7: getting out of a predicament or an embarrassing situation and erect steel arch-shelf and set anchor pole, specifically:
S7.1: steel arch-shelf is installed after the loose slag of arch springing position is cleaned out；
S7.2: up/down steps steel arch-shelf is connected using bolt；
S7.3: being welded to connect muscle and reinforced mesh, installs lock foot anchoring stock and system anchor bolt；
S8: pneumatically placed concrete of getting out of a predicament or an embarrassing situation closing；
After S9: inverted arch applies, and supporting in the early stage all closes cyclization, lining construction operation is carried out.
Wherein, in step S1, the cold every cyclic advance for digging operation is determined according to country rock situation, generally no greater than 2 Pin steelframes
Spacing.
Wherein, step S2 specifically: in top bar digging process, face is crushed dregs using mini-excavator and is taken off
It is transported to rear, then the dregs at rear is transported to outside hole using transport vehicle.
Wherein, it in step S3.2, is attached between steel arch-shelf each unit using steel plate, angle steel and bolt.
Wherein, in step S4, top bar pneumatically placed concrete uses wet spraying process, and spraying operation segmentation, fragment, layering, by
On down, spiral is successively carried out.
Wherein, it when in top bar pneumatically placed concrete if any larger calixconcavity, is first filled and led up, guarantees that preliminary bracing and scar are close
Patch makes steel arch-shelf and spray anchor at supporting entirety stress, to inhibit surrouding rock deformation.
Wherein, in step S5, Blasting Excavation of getting out of a predicament or an embarrassing situation takes the construction principle of " more perforatings, few powder charge, be segmented ", and root more
According to the country rock situation that every circulation face discloses, borehole arrangement parameter is adjusted in time, optimizes Blasting Excavation scheme.
Wherein, step S6 specifically: using mini-excavator or rollover loading machine get out of a predicament or an embarrassing situation excavate face rear portion into
Capable operation of slagging tap, and dregs is transported to outside hole using transport vehicle.
Wherein, in step S8, pneumatically placed concrete of getting out of a predicament or an embarrassing situation uses wet spraying process, and spraying operation segmentation, fragment, layering, by
On down, spiral is successively carried out.
In order to facilitate understanding above-mentioned technical proposal of the invention, below by way of in specifically used mode to of the invention above-mentioned
Technical solution is described in detail.
It is according to the present invention it is a kind of weaken city shallow tunnel concussion of blasting driving method, include as shown in Figure 1:
It excavates the soil body 1 to top bar to excavate, top bar, which is excavated, uses cold digging method, and top bar dregs is slagged tap, and erects steel arch-shelf and beats
If anchor pole, top bar pneumatically placed concrete；Then it excavates the soil body 2 to getting out of a predicament or an embarrassing situation and excavates, excavation of getting out of a predicament or an embarrassing situation is left office using blasting procedure
Rank dregs is slagged tap, and is erected steel arch-shelf and is set anchor pole, pneumatically placed concrete of getting out of a predicament or an embarrassing situation；The soil body 3 finally is excavated to inverted arch to excavate, and is applied
Inverted arch 4 has been applied as inverted arch, has such as needed to be backfilled calixconcavity in top bar pneumatically placed concrete, has needed to carry out calixconcavity backfill.
In conclusion tunnel top bar of the present invention, get out of a predicament or an embarrassing situation and inverted arch step excavation, each workspace process it is independent into
Row, be independent of each other interference, and speed of application is significantly improved；Tunnel inverted arch just props up quickly closure in time, closely follows face, effectively
Deformation controlling for rock surrounding gateways guarantees the quality and safety of constructing tunnel；Biggish shock insulation band and free face are provided after the cold digging of top bar,
Get out of a predicament or an embarrassing situation explosion when so that concussion of blasting reduces, mitigate influence of the explosion to resident.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of driving method for weakening city shallow tunnel concussion of blasting, which comprises the steps of:
S1: broken digging machine or cantilever excavator is selected to carry out cold digging operation to top bar rock mass according to section size；
S2: top bar dregs is slagged tap；
S3: top bar erects steel arch-shelf and sets anchor pole, specifically:
S3.1: the loose slag of top bar face arch springing or corner position is cleaned out；
S3.2: using the first branch rack of face, the arch clipping room determined according to design drawing is away from installation steel arch-shelf；
S3.3: being welded to connect muscle and reinforced mesh, installs lock foot anchoring stock and system anchor bolt；
S4: top bar pneumatically placed concrete；
S5: Blasting Excavation of getting out of a predicament or an embarrassing situation；
S6: dregs of getting out of a predicament or an embarrassing situation is slagged tap；
S7: getting out of a predicament or an embarrassing situation and erect steel arch-shelf and set anchor pole, specifically:
S7.1: steel arch-shelf is installed after the loose slag of arch springing position is cleaned out；
S7.2: up/down steps steel arch-shelf is connected using bolt；
S7.3: being welded to connect muscle and reinforced mesh, installs lock foot anchoring stock and system anchor bolt；
S8: pneumatically placed concrete of getting out of a predicament or an embarrassing situation closing；
After S9: inverted arch applies, and supporting in the early stage all closes cyclization, lining construction operation is carried out.
2. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 1, which is characterized in that step
In rapid S1, the cold every cyclic advance for digging operation is determined according to country rock situation, generally no greater than 2 Pin steelframe spacing.
3. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 2, which is characterized in that step
Rapid S2 specifically: in top bar digging process, face is crushed dregs using mini-excavator takes off and be transported to rear, then make
The dregs at rear is transported to outside hole with transport vehicle.
4. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 3, which is characterized in that step
In rapid S3.2, it is attached between steel arch-shelf each unit using steel plate, angle steel and bolt.
5. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 4, which is characterized in that step
In rapid S4, top bar pneumatically placed concrete uses wet spraying process, and spraying operation segmentation, fragment, layering, from bottom to top, spiral,
Successively carry out.
6. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 5, which is characterized in that on
It when in step pneumatically placed concrete if any larger calixconcavity, is first filled and led up, guarantees that preliminary bracing is closely connected with scar, make steel arch-shelf and spray anchor
Supporting entirety stress is formed, to inhibit surrouding rock deformation.
7. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 5, which is characterized in that step
In rapid S5, Blasting Excavation of getting out of a predicament or an embarrassing situation takes the construction principle of " more perforatings, few powder charge, be segmented " more, and according to every circulation face
The country rock situation of announcement adjusts borehole arrangement parameter in time, optimizes Blasting Excavation scheme.
8. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 7, which is characterized in that step
Rapid S6 specifically: excavate face rear portion using mini-excavator or rollover loading machine and carry out operation of slagging tap getting out of a predicament or an embarrassing situation, and make
Dregs is transported to outside hole with transport vehicle.
9. a kind of driving method for weakening city shallow tunnel concussion of blasting according to claim 8, which is characterized in that step
In rapid S8, pneumatically placed concrete of getting out of a predicament or an embarrassing situation uses wet spraying process, and spraying operation segmentation, fragment, layering, from bottom to top, spiral,
Successively carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910392462.5A CN110145315A (en) | 2019-05-13 | 2019-05-13 | A kind of driving method weakening city shallow tunnel concussion of blasting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910392462.5A CN110145315A (en) | 2019-05-13 | 2019-05-13 | A kind of driving method weakening city shallow tunnel concussion of blasting |
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| CN110145315A true CN110145315A (en) | 2019-08-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513323A (en) * | 2021-08-17 | 2021-10-19 | 中铁二局第四工程有限公司 | Non-blasting and shock-absorbing blasting combined construction method |
| CN113565514A (en) * | 2021-07-20 | 2021-10-29 | 贵州大学 | Construction method of railway running under shallow buried subway tunnel in mountainous city |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113513323A (en) * | 2021-08-17 | 2021-10-19 | 中铁二局第四工程有限公司 | Non-blasting and shock-absorbing blasting combined construction method |
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