CN108868784A - A kind of shield section end portal building enclosure breaking construction method - Google Patents
A kind of shield section end portal building enclosure breaking construction method Download PDFInfo
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- CN108868784A CN108868784A CN201810587561.4A CN201810587561A CN108868784A CN 108868784 A CN108868784 A CN 108868784A CN 201810587561 A CN201810587561 A CN 201810587561A CN 108868784 A CN108868784 A CN 108868784A
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- portal
- hole
- concrete
- building enclosure
- area
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 239000004567 concrete Substances 0.000 claims abstract description 36
- 239000002002 slurry Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000005641 tunneling Effects 0.000 claims abstract description 4
- 239000002689 soil Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 230000008961 swelling Effects 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 238000005054 agglomeration Methods 0.000 claims description 3
- 230000002776 aggregation Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 238000000280 densification Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000012552 review Methods 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 206010038743 Restlessness Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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)
- Working Measures On Existing Buildindgs (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of shield section end portal building enclosure breaking construction methods, and described method includes following steps：1）It drills on the round portal of building enclosure：2）Mixing expands slurry；3）The good expansion slurry of mixing is injected in vertical hole and longitudinal hole and sealing of hole, presplitting concrete；4）The face that originates of round portal is cut；5）First area, the n-th region of second area ... are divided into round portal；6）The concrete removing in face successively is originated to first area, the round portal of the n-th region of second area ... progress and armored concrete is abolished；7）The native face of meeting of round portal is cut；8）Carry out shield launching/reception tunneling construction.The present invention guarantees that portal concrete abolishes range and is able to satisfy Clearance requirement required by design and construction by reasonably drilling arrangement, accurate drilling depth；Whole process is highly-safe, is less prone to the risk of collapsing, and construction quickly ensure that the safety of construction personnel simultaneously.
Description
Technical field
Reception technical field of construction more particularly to a kind of shield section end hole are originated/tunneled the invention belongs to shield
Door building enclosure breaking construction method.
Background technique
City rail project shield section often using station as reception active well is originated, needs before shield launching or reception by hole
Station building enclosure in door range is abolished, to guarantee that the reinforcing bar in building enclosure does not impact shield cutter cutter.Shield
Structure section end soil body generally uses stratum consolidation engineering method to be reinforced, but portal abolishes construction and starts follower head soil layer supporting and retaining system knot
Structure is weakened, there are the possibility that Sand or even end soil body collapse at portal, therefore shield tunnel originate and receive it is past
Toward one of the material risk source for becoming engineering.
Shield section end portal building enclosure is abolished general use and is manually abolished, by setting up cripple as flat
Platform, labor service personnel abolish building enclosure concrete using pneumatic pick, cut off building enclosure reinforcing bar using cutter.Conventional portal is abolished
Engineering method work efficiency is low, long in time limit, to shield cutter top to the time mistake of the face soil body after foundation pit enclosure structure is weakened at portal
It is long, often it is easy to happen the risk time during this period, such as Sand, fall mud chip off-falling, processing, which is not good at evolving into the soil body, collapses
It collapses.
Summary of the invention
The present invention is intended to provide a kind of construction period is short, expense is low, safe mass guaranteed shield section end portal
Building enclosure breaking construction method.
In order to solve the above technical problems, the present invention provides the following technical solutions：A kind of shield section end portal encloses
Protection structure breaking construction method, in turn includes the following steps：
1）It drills on the round portal of building enclosure：Vertical hole is bored downwards along the direction of vertical level；Along with level of incline
Longitudinal hole is bored in 10 ° of direction downwards；
2）Mixing expands slurry；
3）The good expansion slurry of mixing is injected in vertical hole and longitudinal hole and sealing of hole, expansion slurry comes into force presplitting coagulation after expansion
Soil；
4）The face that originates of round portal is cut；
5）First area, the n-th region of second area ... are divided into round portal；
6）Concrete removing and the steel that round portal originates face successively are carried out to first area, the n-th region of second area ...
Reinforced concrete is abolished；Wherein, the method for concrete removing is：Manual operation pneumatic pick cuts concrete after the completion of concrete presplitting,
It is allowed to form the debris of sheet or strip, debris is carried to outlet in totebox；The method that armored concrete is abolished is：Coagulation
After soil removing, cutting armored concrete is concentrated；
7）The native face of meeting of round portal is cut；
8）Carry out shield launching/reception tunneling construction.
Step 1）The aperture in the vertical hole and longitudinal hole is 40mm, and pitch of holes is 300mm, and array pitch is
400mm, hole depth are 0.95 times of circular holes thickness gate.
Step 2）Expansion slurry mixing method be：The expanding powder dosage stirred every time is 6 ~ 20kg, and swelling agent dosage is
15kg/ times, mixing water amount is the 25% of swelling agent weight, i.e. 3.75kg, water temperature is 40 °C；Expanding powder, swelling agent and water are stirred
It mixes together, mixing time is 40s~60s, is allowed to form the expansion slurry of no agglomeration.
Step 3）Expansion slurry needs inject vertical hole and longitudinal hole in the good 10min of mixing.
Step 3）Method for sealing be：For vertical hole：Will after expansion slurry injects vertical hole, plugged and pounded with iron wire it is closely knit,
The gap of 5~10mm is stayed in the aperture in vertical hole；For longitudinal hole：It is 0.2 with the ratio of mud after slurry injection longitudinal hole will be expanded
Water and swelling agent mixing be clay, hand rubbing Cheng Sai blocks the aperture of longitudinal hole, smashes densification reality with waddy；
Step 3）The overall process of entire injection expansion slurry and sealing of hole is completed in 30min.
Step 5）In first area, the n-th region of second area ... are divided into round portal, region partitioning method is：
Nine grids are uniformly divided into round portal full circle, wherein n is nine.
Nine grids from top to bottom, respectively second area, first area, third region, the 5th region, the 4th from left to right
Region, the 6th region, Section Eight domain, District 7 domain and the 9th region.
Step 7）The method that native face is cut of meeting to round portal is：Firstly, the soil that review arrival mouth is reinforced
Body, it is ensured that cut outlet armored concrete in portal after soil stabilization；Then, the reinforcing bar of removing concrete is cut off with oxygen welding.
By above technical scheme, beneficial effects of the present invention are：Method of the present invention, have the construction period it is short,
Minimize shield launching risk, quality is easy to guarantee, the advantages that putting into economical rationality of constructing；Meanwhile（1）Portal uses swelling agent
Presplitting is carried out, it is small on the influence of entire shield section, it is less prone to Sand, falls mud chip off-falling lamp problem, ensure that using safe；
It is blocky to form piece for building enclosure concrete after shield presplitting, then each concrete block of smallization, makes it easier to carry, allow worker with
Debris is transported to slag bucket outlet by " removing brick " mode, safe and efficient；（2）Fritter concrete changes traditional portal and abolishes scene
The phenomenon that dirty, unrest, dust diffuse realizes that civilized construction, environmental protection construction are highly-safe in work progress.
Detailed description of the invention
Fig. 1 is that portal building enclosure of the present invention abolishes sequence layout drawing；
Fig. 2 is portal building enclosure pre-splitting hole schematic diagram of the present invention；
Fig. 3 is that portal building enclosure of the present invention abolishes schematic diagram.
Specific embodiment
A kind of shield section end portal building enclosure breaking construction method, in turn includes the following steps：
1）It drills on the round portal of building enclosure：Vertical hole 10 is bored downwards along the direction of vertical level；Along to tilt water
Longitudinal hole 11 is bored in downward 10 ° of the direction of plane, as shown in Figure 2.
Wherein, the vertical hole 10 and the aperture of longitudinal hole 11 are 40mm, and pitch of holes is 300mm, and array pitch is
400mm, hole depth are 0.95 times of circular holes thickness gate.Round portal may be implemented by boring vertical hole 10 and longitudinal hole 11
Effective presplitting, work efficiency is high；Aperture, pitch of holes, array pitch and the hole depth in vertical hole 10 and longitudinal hole 11 are defined, had
Effect ensure that construction safety.
2）Mixing expands slurry；Wherein, the mixing method for expanding slurry is：The expanding powder dosage stirred every time be 6 ~
20kg, swelling agent dosage are 15kg/ times, and mixing water amount is the 25% of swelling agent weight, i.e. 3.75kg, water temperature is 40 °C；It will be swollen
Swollen powder, swelling agent and water are bound together, and mixing time is 40s~60s, are allowed to form the expansion slurry of no agglomeration, are passed through this
The expansion slurry using effect of kind form mixing is good, and at low cost, the influence to entire building enclosure is smaller.
3）The good expansion slurry of mixing is injected in vertical hole 10 and longitudinal hole 11 and sealing of hole, entire injection expansion slurry and
The overall process of sealing of hole is completed in 30min, so that using effect be effectively ensured.
Expansion slurry comes into force presplitting concrete after expansion, wherein expansion slurry needs to inject in the good 10min of mixing perpendicular
To hole 10 and longitudinal hole 11, to guarantee the using effect of expansion slurry.
The method of sealing of hole is in this step：For vertical hole 10：After the vertical hole 10 of slurry injection will be expanded, plugged and pounded with iron wire
It is closely knit, the gap of 5~10mm is stayed in the aperture in vertical hole 10；For longitudinal hole 11：After slurry injection longitudinal hole 11 will be expanded, use
The water and swelling agent mixing that the ratio of mud is 0.2 are clay, and hand rubbing Cheng Sai blocks the aperture of longitudinal hole 11, smash densification reality with waddy.
Sealing of hole, longitudinal hole 11 and vertical hole 10 are carried out according to the difference in vertical hole 10 and longitudinal hole 11 respectively by this form sealing of hole
Sealing of hole effect it is relatively good.
4）The face 12 that originates of round portal is cut.
5）First area 1, the n-th region second area 2...... are divided into round portal；Specially：To round portal point
For first area 1, the n-th region second area 2......, region partitioning method is：Nine palaces are uniformly divided into round portal full circle
Lattice, wherein n is nine.Nine grids from top to bottom, respectively second area 2, first area 1, third region the 3, the 5th from left to right
Region 5, the fourth region 4, the 6th region 6, Section Eight domain 8, District 7 domain 7 and the 9th region 9, as shown in Figure 1.
6）The concrete that round portal originates face 12 successively is carried out to first area 1, the n-th region second area 2......
Removing and armored concrete are abolished；Wherein, the method for concrete removing is：Manual operation pneumatic pick is cut after the completion of concrete presplitting
Concrete, is allowed to form the debris of sheet or strip, and debris is carried to outlet in totebox；The method that armored concrete is abolished
For：After concrete removing, cutting armored concrete is concentrated.
7）The native face 13 of meeting of round portal is cut；The method that native face 13 is cut of meeting to round portal is：
Firstly, the soil body that review arrival mouth is reinforced, it is ensured that cut outlet armored concrete in portal after soil stabilization；Then, it uses
The reinforcing bar 14 of oxygen welding excision removing concrete, after the completion, shield machine promotes portal, as shown in Figure 3.
8）Shield launching/reception tunneling construction is carried out, the face soil body is held together on shield machine top.
Method of the present invention guarantees that portal concrete is abolished by reasonably drilling arrangement, accurate drilling depth
Range is able to satisfy Clearance requirement required by design and construction；Whole process is small on the influence of entire shield section, is less prone to and gushes
Water gushes sand, falls mud chip off-falling lamp problem, highly-safe, is less prone to the risk of collapsing, and construction quickly ensure that construction personnel simultaneously
Safety, change the phenomenon that traditional portal abolishes the dirty, unrest in scene, dust diffuses, realize civilized construction, environmental protection construction, construction
It is highly-safe in the process.
Claims (9)
1. a kind of shield section end portal building enclosure breaking construction method, it is characterised in that：It in turn includes the following steps：
1）It drills on the round portal of building enclosure：Vertical hole is bored downwards along the direction of vertical level；Along with level of incline
Longitudinal hole is bored in 10 ° of direction downwards；
2）Mixing expands slurry；
3）The good expansion slurry of mixing is injected in vertical hole and longitudinal hole and sealing of hole, expansion slurry comes into force presplitting coagulation after expansion
Soil；
4）The face that originates of round portal is cut；
5）First area, the n-th region of second area ... are divided into round portal；
6）Concrete removing and the steel that round portal originates face successively are carried out to first area, the n-th region of second area ...
Reinforced concrete is abolished；Wherein, the method for concrete removing is：Manual operation pneumatic pick cuts concrete after the completion of concrete presplitting,
It is allowed to form the debris of sheet or strip, debris is carried to outlet in totebox；The method that armored concrete is abolished is：Coagulation
After soil removing, cutting armored concrete is concentrated；
7）The native face of meeting of round portal is cut；
8）Carry out shield launching/reception tunneling construction.
2. shield section as described in claim 1 end portal building enclosure breaking construction method, it is characterised in that：Step 1）
The aperture in the vertical hole and longitudinal hole is 40mm, and pitch of holes is 300mm, and array pitch is 400mm, and hole depth is circle
0.95 times of portal thickness.
3. shield section as claimed in claim 2 end portal building enclosure breaking construction method, it is characterised in that：Step 2）
Expansion slurry mixing method be：The expanding powder dosage stirred every time is 6 ~ 20kg, and swelling agent dosage is 15kg/ times, and stirring is used
Water is the 25% of swelling agent weight, i.e. 3.75kg, water temperature is 40 °C；Expanding powder, swelling agent and water are bound together, stirred
Time is 40s~60s, is allowed to form the expansion slurry of no agglomeration.
4. shield section as claimed in claim 3 end portal building enclosure breaking construction method, it is characterised in that：Step 3）
Expansion slurry needs inject vertical hole and longitudinal hole in the good 10min of mixing.
5. shield section as claimed in claim 4 end portal building enclosure breaking construction method, it is characterised in that：Step 3）
Method for sealing be：For vertical hole：Will after expansion slurry injects vertical hole, plugged and pounded with iron wire it is closely knit, in the aperture in vertical hole
Stay the gap of 5~10mm；For longitudinal hole：After slurry injection longitudinal hole will be expanded, mixed with the water that the ratio of mud is 0.2 with swelling agent
It is made as clay, hand rubbing Cheng Sai blocks the aperture of longitudinal hole, smashes densification reality with waddy.
6. shield section as claimed in claim 5 end portal building enclosure breaking construction method, it is characterised in that：Step 3）
The overall process of entire injection expansion slurry and sealing of hole is completed in 30min.
7. shield section as claimed in claim 6 end portal building enclosure breaking construction method, it is characterised in that：Step 5）
In first area, the n-th region of second area ... are divided into round portal, region partitioning method is：With round portal full circle
Nine grids are uniformly divided into, wherein n is nine.
8. shield section as claimed in claim 7 end portal building enclosure breaking construction method, it is characterised in that：Nine grids
From top to bottom, from left to right respectively second area, first area, third region, the 5th region, the fourth region, the 6th region,
Section Eight domain, District 7 domain and the 9th region.
9. the shield section end portal building enclosure breaking construction method as described in claim 1 to 8 any one, feature
It is：Step 7）The method that native face is cut of meeting to round portal is：Firstly, the soil body that review arrival mouth is reinforced,
Ensure to cut outlet armored concrete in portal after soil stabilization；Then, the reinforcing bar of removing concrete is cut off with oxygen welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587561.4A CN108868784B (en) | 2018-06-08 | 2018-06-08 | Construction method for breaking tunnel portal enclosure structure at end of shield region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587561.4A CN108868784B (en) | 2018-06-08 | 2018-06-08 | Construction method for breaking tunnel portal enclosure structure at end of shield region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108868784A true CN108868784A (en) | 2018-11-23 |
| CN108868784B CN108868784B (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587561.4A Active CN108868784B (en) | 2018-06-08 | 2018-06-08 | Construction method for breaking tunnel portal enclosure structure at end of shield region |
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| CN (1) | CN108868784B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109366770A (en) * | 2018-12-06 | 2019-02-22 | 中铁隧道集团二处有限公司 | It is a kind of to receive the rope saw cut construction method that portal is abolished for shield |
| CN109707394A (en) * | 2018-12-17 | 2019-05-03 | 同济大学 | A kind of construction method for subway tunnel shield receiving end portal |
| CN110424969A (en) * | 2019-07-03 | 2019-11-08 | 中铁一局集团厦门建设工程有限公司 | It is a kind of elder generation tunnel after stand cut and cover method station construction engineering method |
| CN111271076A (en) * | 2020-04-10 | 2020-06-12 | 中建八局轨道交通建设有限公司 | Tunnel portal breaking construction method for underground excavation method transverse channel |
| CN111779496A (en) * | 2020-07-14 | 2020-10-16 | 中铁三局集团有限公司 | Novel subway shield tunneling portal gap plugging method |
| CN112502729A (en) * | 2020-12-07 | 2021-03-16 | 上海市机械施工集团有限公司 | Method for breaking hole door to enter and exit hole |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329915A1 (en) * | 1987-12-30 | 1989-08-30 | Bechem, Hannelore | Shaft for drilling tools, eccentrically arranged and rotatably mounted |
| CN1995701A (en) * | 2006-12-30 | 2007-07-11 | 广东省基础工程公司 | Mechanical breaking construction method for use as shield tunneling machine reached tunnel portal |
| CN105804758A (en) * | 2016-04-22 | 2016-07-27 | 中国电建集团铁路建设有限公司 | Shallow-earthing, large-section and small-distance construction method for rectangular pipe jacking overpass subway tunnel |
-
2018
- 2018-06-08 CN CN201810587561.4A patent/CN108868784B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329915A1 (en) * | 1987-12-30 | 1989-08-30 | Bechem, Hannelore | Shaft for drilling tools, eccentrically arranged and rotatably mounted |
| CN1995701A (en) * | 2006-12-30 | 2007-07-11 | 广东省基础工程公司 | Mechanical breaking construction method for use as shield tunneling machine reached tunnel portal |
| CN105804758A (en) * | 2016-04-22 | 2016-07-27 | 中国电建集团铁路建设有限公司 | Shallow-earthing, large-section and small-distance construction method for rectangular pipe jacking overpass subway tunnel |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109366770A (en) * | 2018-12-06 | 2019-02-22 | 中铁隧道集团二处有限公司 | It is a kind of to receive the rope saw cut construction method that portal is abolished for shield |
| CN109707394A (en) * | 2018-12-17 | 2019-05-03 | 同济大学 | A kind of construction method for subway tunnel shield receiving end portal |
| CN110424969A (en) * | 2019-07-03 | 2019-11-08 | 中铁一局集团厦门建设工程有限公司 | It is a kind of elder generation tunnel after stand cut and cover method station construction engineering method |
| CN111271076A (en) * | 2020-04-10 | 2020-06-12 | 中建八局轨道交通建设有限公司 | Tunnel portal breaking construction method for underground excavation method transverse channel |
| CN111779496A (en) * | 2020-07-14 | 2020-10-16 | 中铁三局集团有限公司 | Novel subway shield tunneling portal gap plugging method |
| CN112502729A (en) * | 2020-12-07 | 2021-03-16 | 上海市机械施工集团有限公司 | Method for breaking hole door to enter and exit hole |
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| Publication number | Publication date |
|---|---|
| CN108868784B (en) | 2020-09-04 |
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