CN107420106A - The small spacing Under-cross tunnel excavation method in subway station and Under-cross tunnel excavation method - Google Patents
The small spacing Under-cross tunnel excavation method in subway station and Under-cross tunnel excavation method Download PDFInfo
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- CN107420106A CN107420106A CN201710670315.0A CN201710670315A CN107420106A CN 107420106 A CN107420106 A CN 107420106A CN 201710670315 A CN201710670315 A CN 201710670315A CN 107420106 A CN107420106 A CN 107420106A
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- under
- subway station
- construction
- small spacing
- tunnel excavation
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The present invention relates to constructing tunnel field, it is intended to solves the problems, such as small spacing Under-cross tunnel construction method working security difference of the prior art, proposes the small spacing Under-cross tunnel excavation method in subway station and Under-cross tunnel excavation method.The small spacing Under-cross tunnel excavation method in subway station wears a section construction procedure under including, under wear section use two separation single-hole double-layer domes.Under wear a section construction procedure and include:Method is first dug using milling and excavates upper exponent part, in then being excavated using blasting procedure, the Outboard Sections of lower rank;Finally excavate in two single holes, lower rank inboard portion, and in two single holes, lower rank inboard portion, the single hole first excavated use Blasting Excavation, and method excavation is dug in the single hole excavated afterwards using milling.The beneficial effects of the invention are as follows can ensure that efficiency of construction and safe construction, and can reduces the vibration at construction noise and subway circulation station, can not only produce economic benefit, moreover it is possible to bring social benefit.
Description
Technical field
The present invention relates to constructing tunnel field, in particular to a kind of small spacing Under-cross tunnel excavation side in subway station
Method and Under-cross tunnel excavation method.
Background technology
With the development of track traffic, there is increasing right-angled intersection point in subterranean tunnel, and this is especially embodied in city
In subway system.In order to save construction cost and reduce passenger's crossover journey, the vertical spacing between upper and lower tunnel be controlled in compared with
In small value, such newly built tunnels are inevitably needed to wear existing station under small spacing, and this excavation to bottom newly built tunnels is applied
Work technique proposes strict requirements with technology.
The excavation construction mode in tunnel mainly includes Blasting Excavation, mechanical equivalent of light excavation and hand excavation, compared with Blasting Excavation,
Mechanical equivalent of light excavation is slow with hand excavation's speed, efficiency is low, especially hand excavation, and the duration that can not adapt to modern construction engineering will
Ask.However, for worn under foregoing small spacing operation station when tunnel excavation, exist it is unmanageable, easily cause and cave in
The problem of security incident.
The content of the invention
The present invention is intended to provide a kind of small spacing Under-cross tunnel excavation method in subway station, to solve the above problems.
Another object of the present invention is to provide a kind of to possess above-mentioned subway station small spacing Under-cross tunnel excavation method
Under-cross tunnel excavation method.
What embodiments of the invention were realized in:
The embodiment of the present invention provides a kind of small spacing Under-cross tunnel excavation method in subway station, and it wears section construction step under including
Suddenly, the single-hole double-layer domes that section uses two separation are worn under.Under wear a section construction procedure and include:First method is dug using milling to excavate
Exponent part, in then being excavated using blasting procedure, the Outboard Sections of lower rank;Finally excavate in two single holes, lower rank inboard portion,
And in two single holes, lower rank inboard portion, the single hole first excavated uses Blasting Excavation, and the single hole excavated afterwards is dug using milling
Method is excavated.
Use first of the embodiment of the present invention will wear section and be changed to double holes structure under large span list hole tunnel, and to double holes not
Mechanical equivalent of light excavation and Blasting Excavation are used with regioselectivity, efficiency of construction is can ensure that, ensures construction speed and safe construction, and can
Reduce the vibration at construction noise and subway circulation station, economic benefit can not only be produced, moreover it is possible to bring social benefit.
In an embodiment of the present embodiment:
On excavation during exponent part, the operating platform of milling digging machine is arranged in scala media, and it is 3-5m that upper exponent part, which excavates step pitch,.
In an embodiment of the present embodiment:
Upper exponent part is excavated at step pitch using controlled blasting construction scala media.
In an embodiment of the present embodiment:
Lower exponent part is routinely excavated using controlled blasting at step pitch.
In an embodiment of the present embodiment:
In, the Outboard Sections of lower exponent part constructed using controlled blasting, and in, the height sum of lower exponent part 8m it
It is interior.
In an embodiment of the present embodiment:
Interface between the inboard portion in single hole and Outboard Sections is arcwall face.
In an embodiment of the present embodiment:
Interface between the upper exponent part and middle exponent part in single hole, middle exponent part and lower exponent part is plane.
In an embodiment of the present embodiment:
Under wear in section construction procedure, one in two single holes in advance excavate after the completion of carry out another excavation again.
In an embodiment of the present embodiment:
Under wear section and include positioned at wearing subway station underface overlay area and that extends from overlay area to both ends prolong
Stretch region.
The embodiment of the present invention also provides a kind of Under-cross tunnel excavation method, and it is used wears under the small spacing in foregoing subway station
Worn under tunnel excavation method and wear section excavation under section construction procedure construction;The tunnel segment that section both ends are worn under being located at uses large span
Single hole tunnel construction method construction.
The embodiment of the present invention first using will be worn under large span list hole tunnel section be changed to double hole structures and to double holes not
Mechanical equivalent of light excavation and Blasting Excavation are used with regioselectivity, efficiency of construction is can ensure that, ensures construction speed and safe construction, and can
Reduce the vibration at construction noise and subway circulation station, economic benefit can not only be produced, moreover it is possible to bring social benefit.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is pre- excavation Under-cross tunnel and the top view of subway station;
Fig. 2 is sectional views of the Fig. 1 along line A-A;
Fig. 3 be the embodiment of the present invention in the small spacing Under-cross tunnel excavation method in subway station Under-cross tunnel structure and and
The position relationship view of subway station;
Fig. 4 is sectional views of the Fig. 3 along line B-B;
Fig. 5 is sectional views of the Fig. 4 along line C-C.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that:Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, if occur term " " center ", " on ", " under ", "left", "right",
The orientation or position relationship of the instruction such as " vertical ", " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship,
Either the invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplification retouched
State, rather than instruction or imply signified device or element there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.If only used in addition, occurring term " first ", " second " etc. in description of the invention
Described in distinguishing, and it is not intended that instruction or hint relative importance.
If it is not offered as requiring that part is absolute in addition, occurring the term such as term " level ", " vertical " in description of the invention
Horizontal or pendency, but can be slightly tilted.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", not
It is to represent that the structure must be fully horizontal, but can be slightly tilted.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, if there is term
" setting ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or detachably connecting
Connect, or be integrally connected;Can be mechanical connection or electrical connection;Can be joined directly together, middle matchmaker can also be passed through
Jie is indirectly connected, and can be the connection of two element internals.For the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Embodiment
Fig. 1, Fig. 2 are referred to, the Under-cross tunnel excavated in advance will be passed through below subway station, and its vertical spacing H need to be controlled
System is in smaller range, such as 5m or so.To ensure construction safety, so small vertical spacing by the selection to construction method and
Using bringing great limitation, existing construction method can not be applicable because of low construction efficiency or the reasons such as security risk is big.
The present embodiment proposes a kind of small spacing Under-cross tunnel excavation method in subway station, and it can be perfectly suitable for above-mentioned
Construction requirement, can efficiently and safely complete the excavation of Under-cross tunnel, there is significant economic benefit.Suitable for the construction environment
The popularization of tunnelling works.Please refer to Fig. 3, Fig. 4, the small spacing Under-cross tunnel in subway station that the present embodiment provides excavates
Method wears a section construction procedure under including, under wear section use two separation single-hole double-layer domes.Be designed to two separation
Single hole, the rock pillar retained between two single holes can remain certain support, reduce and excavating, especially Blasting Excavation when
The vibration of top subway station.Under wear a section construction procedure and include:Method is first dug using milling and excavates upper exponent part, then using blasting procedure
In excavation, the Outboard Sections of lower rank;Finally excavate two single holes in, lower rank inboard portion, and in two single holes, under
Rank inboard portion, the single hole first excavated use Blasting Excavation, and the single hole excavated afterwards is dug method using milling and excavated.
Alternatively, the interface between the inboard portion in single hole and Outboard Sections is arcwall face.The upper exponent part in single hole and
Interface between middle exponent part, middle exponent part and lower exponent part is plane.Between foregoing upper exponent part and middle exponent part
Interface refer to face one in the horizontal direction in Fig. 4, the interface between middle exponent part and lower exponent part refers to Fig. 4
In face two.Foregoing " in, the Outboard Sections of lower rank " refers to the side part of two single mutual departing directions in hole, and corresponding " two
In individual single hole, lower rank inboard portion " for two single holes side part close to each other.Between Outboard Sections and inboard portion
Interface refers to the face three in Fig. 4.Face three also demarcates in addition to centering exponent part and lower exponent part are demarcated to upper exponent part.
The embodiment of the present invention proposes to be changed to double holes structures using will wear section under large span list hole tunnel first, and to double holes
Different zones selectively use mechanical equivalent of light excavation and Blasting Excavation, can ensure that efficiency of construction, guarantee construction speed and safe construction,
And can reduces the vibration at construction noise and subway circulation station, can not only produce economic benefit, moreover it is possible to bring social benefit.
In an embodiment of the present embodiment, Fig. 5 is referred to, on excavation during exponent part, the operating platform of milling digging machine
It is arranged in scala media, and it is 3-5m that upper exponent part, which excavates step pitch,.Upper exponent part is excavated at step pitch using controlled blasting construction scala media.
Lower exponent part is routinely excavated using controlled blasting at step pitch.Regular stride at this for example can be 10m.
In an embodiment of the present embodiment, in, the Outboard Sections of lower exponent part constructed using controlled blasting, and
In, the height sum H1 of lower exponent part is within 8m.
To ensure construction safety, the disturbance brought that avoids constructing simultaneously accommodates, under wear in section construction procedure, in two single holes
One in advance excavate after the completion of carry out another excavation again.
In one embodiment of the invention, referring again to Fig. 3, under wear section and include positioned at wearing subway station underface
Overlay area and the elongated area extended from overlay area to both ends, to ensure the safety of station end positions.
The embodiment of the present invention also provides a kind of Under-cross tunnel excavation method, and it is used wears under the small spacing in foregoing subway station
Worn under tunnel excavation method and wear section excavation under section construction procedure construction;The tunnel segment that section both ends are worn under being located at uses large span
Single hole tunnel construction method construction.
Engineering example:Chongqing track No. 10 line tunnel plane is into wearing No. 6 line laterite of track station under an angle of 90 degrees, arch
From No. 6 line laterite of apex distance ground only 5.06m with a distance from the bottom plate of station.The engineering uses the Under-cross tunnel excavation side in the present embodiment
Method:Immediately below station, track No. 10 line tunnel uses the single-hole double-layer domes of two separation in No. 6 line laterite, uses
Milling digging machine excavates the construction method that is combined with controlled blasting, rank maximum height 3.4m on milling digging machine, scala media height 4.3m, upper rank
With scala media height sum be scala media to the distance H12 of vault it is 7.7m, the step pitch L12 of upper rank and scala media is 4.0m, and such milling is dug
Machine can excavate operation well in scala media, and milling digging machine, which excavates progress, can reach 0.5m/ days.Scala media and lower rank are using control
Blast working, No. 6 line laterite station monitor obtained maximum velocity only 0.33cm/s, less than Subway Vibration permissible value
1cm/s.Meanwhile in being constructed in track No. 10 line tunnel Hou Hang holes, leaned in single hole of rear excavation the Dan Dong sides scala media first excavated with
Lower rank is also excavated using milling digging machine, to checking that the rock mass between two holes conducts a survey after the completion of construction, does not find that subsequent construction is produced
The new crack of raw rock mass, greatly protects the rock mass between two holes, enhances the resistance to overturning in tunnel.
In summary, the embodiment of the present invention is changed to double hole structures and right using will wear section under large span list hole tunnel first
The different zones in double holes selectively use mechanical equivalent of light excavation and Blasting Excavation, can ensure that efficiency of construction, ensure construction speed and safety
Construction, and can reduce the vibration at construction noise and subway circulation station, can not only produce economic benefit, moreover it is possible to bring social effect
Benefit.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. small spacing Under-cross tunnel excavation method in subway station, it is characterised in that:A section construction procedure is worn including under, under described Wear the single-hole double-layer domes that section uses two separation;A section construction procedure is worn under described to be included:Method is first dug using milling and excavates upper exponent part, in then being excavated using blasting procedure, lower rank Outboard Sections;Finally excavate two single holes in, lower rank inboard portion, and in two single holes, lower rank inboard portion, The single hole first excavated uses Blasting Excavation, and the single hole excavated afterwards is dug method using milling and excavated.
- 2. the small spacing Under-cross tunnel excavation method in subway station according to claim 1, it is characterised in that:On excavation during exponent part, the operating platform of milling digging machine is arranged in scala media, and it is 3-5m that upper exponent part, which excavates step pitch,.
- 3. the small spacing Under-cross tunnel excavation method in subway station according to claim 2, it is characterised in that:Upper exponent part is excavated at step pitch using controlled blasting construction scala media.
- 4. the small spacing Under-cross tunnel excavation method in subway station according to claim 3, it is characterised in that:Lower exponent part is routinely excavated using controlled blasting at step pitch.
- 5. the small spacing Under-cross tunnel excavation method in subway station according to claim 1, it is characterised in that:In, the Outboard Sections of lower exponent part constructed using controlled blasting, and in, the height sum of lower exponent part is within 8m.
- 6. the small spacing Under-cross tunnel excavation method in subway station according to claim 1, it is characterised in that:Interface between the inboard portion in single hole and Outboard Sections is arcwall face.
- 7. the small spacing Under-cross tunnel excavation method in subway station according to claim 1, it is characterised in that:Interface between the upper exponent part and middle exponent part in single hole, middle exponent part and lower exponent part is plane.
- 8. the small spacing Under-cross tunnel excavation method in subway station according to claim 1, it is characterised in that:Worn under described in section construction procedure, one in two single holes carries out another excavation again after the completion of excavating in advance.
- 9. the small spacing Under-cross tunnel excavation method in subway station according to claim 1, it is characterised in that:Section is worn under described to be included positioned at wearing subway station underface overlay area and that extends from overlay area to both ends prolong Stretch region.
- A kind of 10. Under-cross tunnel excavation method, it is characterised in that:Walked using section construction is worn under the small spacing Under-cross tunnel excavation method in subway station described in claim any one of 1-9 Section excavation is worn under rapid construction;The tunnel segment that section both ends are worn under being located at is constructed using large span list hole tunnel construction method.
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US9500419B2 (en) * | 2013-03-15 | 2016-11-22 | Hypersciences, Inc. | Ram accelerator system |
CN103174430A (en) * | 2013-04-10 | 2013-06-26 | 中国水利水电第十四工程局有限公司 | Shallow-buried large-span water conveying tunnel three-stage five-step digging method |
CN103174430B (en) * | 2013-04-10 | 2015-06-10 | 中国水利水电第十四工程局有限公司 | Shallow-buried large-span water conveying tunnel three-stage five-step digging method |
CN104806251A (en) * | 2015-04-27 | 2015-07-29 | 北京市轨道交通建设管理有限公司 | Subsidiary inverted excavation construction method for urban subway station under complex environment |
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Application publication date: 20171201 |