CN108952733A - Separate launching shield technique application construction method in municipal sewerage engineering - Google Patents
Separate launching shield technique application construction method in municipal sewerage engineering Download PDFInfo
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- CN108952733A CN108952733A CN201710348004.2A CN201710348004A CN108952733A CN 108952733 A CN108952733 A CN 108952733A CN 201710348004 A CN201710348004 A CN 201710348004A CN 108952733 A CN108952733 A CN 108952733A
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- shield machine
- soil
- foam
- pressure
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 37
- 230000005641 tunneling Effects 0.000 claims abstract description 13
- 239000004567 concrete Substances 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000006641 stabilisation Effects 0.000 claims abstract description 7
- 238000011105 stabilization Methods 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 241001669679 Eleotris Species 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011178 precast concrete Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to technical field of civil engineering, are suitable for city internal drainage pipeline Project Shield and construct, especially narrow on construction ground, can not disposably install the engineering of whole Suporting structures.Separate launching shield technique application construction method step in municipal sewerage engineering includes: starting well arrangement, facility arrangement in starting well, shield machine examination is hung, shield machine lifting is gone into the well, the installation of hole soil stabilization, hole rubber cord, hole bored concrete pile are cut, the preparation of delivery arrangement, shield launching, initial tunneling construction, shield trolley originate.Separate launching shield technique application construction method in municipal sewerage engineering provided by the invention can effectively reduce the size for originating vertical shaft using shield machine separate launching technology, reduce engineering cost, while can also reduce the influence to surrounding enviroment to greatest extent.
Description
Technical field
The present invention relates to technical field of civil engineering, are specifically related to separate launching shield technique in municipal sewerage engineering
Application construction method is suitable for city internal drainage pipeline Project Shield and constructs, especially narrow on construction ground, can not be disposable
The engineering of whole shield driving equipment is installed.
Background technique
With the variation of weather in recent years, Severe rainstorm weather often occurs, and urban waterlogging phenomenon aggravates, especially old city
Area's inner water drainage system is unable to satisfy draining needs already.The continuous increase of newly-built drainage pipeline caliber, traditional handicraft can not expire
The existing engineering construction requirement of foot.Since shield technique is applied widely, construction caliber it is big the advantages that, gradually be applied to drainage system
In.
The technical requirements of each construction link of shield technique are relatively high, and especially shield launching link is that shield is applied
A key link in work.In subway work, shield launching is shield launching is aimed at using station or build perpendicular
It is carried out in well.But municipal sewerage engineering is often in city, and the place that can be used in large-area construction land used is few, and considers
The occupied area of economic factor, starting well is relatively small, prevents shield machine from routinely integrally originating, it is necessary to be begun using seperated
Hair.
I has carried out separate launching technical research and application in construction early period and construction at unit, it is established that a whole set of is perfect
Construction technology and core technology, through summarize form the present invention, achieve good effect in practical applications.
Summary of the invention
In view of the above drawbacks of the prior art, separate launching shield technique provided by the invention is answered in municipal sewerage engineering
The size for originating vertical shaft can be effectively reduced using shield machine separate launching technology with construction method, reduce engineering cost, simultaneously
The influence to surrounding enviroment can also be reduced to greatest extent.
In order to achieve the above object, the invention provides the following technical scheme:
Separate launching shield technique application construction method in municipal sewerage engineering, step include:
1), starting well is arranged:
Shield machine length is 10m, and 1#-14# trolley need to be placed on ground, shield having a size of 16m*8m by launching shaft
Machine can just originate in short vertical shaft；
2), facility is arranged in starting well:
(1), shield reaction frame: using diagonal brace reaction shelf of door type, and material is the 20 of Q235#H profile steel welding composition, reaction frame are prefabricated
After forming, axial location and elevation are provided by survey crew, vertical shaft is hung in by crane, and carry out installation reinforcing, after the installation is completed
The verticality of reaction frame is detected, guarantee that reaction frame is vertical with shield driving axis；
(2), shield machine pedestal is installed: shield machine pedestal is girder made of being welded as fashioned iron, and the above is two rail, as
Guide rail when shield machine is appeared；Shield machine pedestal will be welded with the embedded iron on starting well bottom plate, and with fashioned iron and the borehole wall
Top jail；When shield machine pedestal elevation is installed, it is to be ensured that it is 15mm higher than design altitude after shield machine is in place, at the beginning of adjusting shield machine
Begin the posture tunneled；
3), shield machine examination is hung:
Shield machine is sling into liftoff 0.2m, is hovered 5 minutes, checks that confirmation shield machine, hoist cable, supporting surface, crane, foundation pit side-wall are equal
It is intact it is without exception after, and held with cable wind rope and hung shield machine held stationary, lifting can be commanded to run；
4), shield machine lifting is gone into the well:
Shield machine diameter 4.13m, long 10.5m, weight 110t use 350t crane when lifting, and shield machine center be in crane 8m and makees
In industry radius；Shield machine both ends are fastened with traction rope, and shield machine keeps horizontal after lifting, and crane makes shield by rotation, luffing
After machine reaches well head, slow off the hook；After shield machine and base into contact, constantly amendment, adjustment attitude of shield machine, it is ensured that shield master
Machine transfers designated position；After shield machine is stablized, U-shaped card ring is removed, shield machine lifting finishes；
5), hole soil stabilization:
It in order to guarantee the stabilization of hole surrounding soil, is reinforced using rotary churning pile form, rotary churning pile spacing are as follows: outside pumping plant portal
550@400 are used in 3 meters, remaining is 550@600；
Reinforcing scope are as follows:
Starting well: 8m on the outside of bored concrete pile, pipe centerline each 4m up and down；
Received well: 12m on the outside of received well, pipe centerline each 4m up and down；
6), rubber cord in hole is installed:
Rubber cord is hung on the pre-buried steel loop in hole with bolt, and is fixed with arc keeper plate of steel, then again in arc-shaped steel pressure
Prefabricated foldable fan-shaped steel plate is installed outside plate；When cutter head of shield machine enters hole, adjustment fanning strip to shield machine shell
Distance be 10mm or so, rubber curtain and fan type steel plate are headed into and are curved inwardly by the shell of shield machine, when shield machine shield tail steel
When wire brush has just enter into hole exposing section of jurisdiction, then fanning strip is adjusted, falls in it on section of jurisdiction, rubber is removed after the completion of initially tunneling
Cord；
7), hole bored concrete pile is cut:
7 days progress portal bored concrete piles are cut before originating, and using pneumatic pick according to from bottom to top, are carried out from both sides toward intermediate sequence
Manually cut；
8), delivery arrangement:
(1), earthwork transportation
After battery truck delivery soil bucket to soil outlet, soil bucket is put upside down to collection heatable adobe sleeping platform, dregs transportation vehicle collective conveyance by 100t crane
To spoil ground；
(2), section of jurisdiction is transported
Precast concrete section of jurisdiction is transported to behind construction site and first deposits in live section of jurisdiction storage pad, and when use is put with crane handling to electricity
On the flat car of bottle vehicle traction, and it is transported into pipeline；
(3), other goods transportations
The big part material of rail, sleeper is put with crane to fixation on flat car, is transported into pipeline within the pipe sheet assembling time；Even
It connects pressing plate, clamping plate and the bolt of rail and the arch screw bolt of pipeline driving, Seal Oil, lubricating oil smallclothes auxiliary material is used
After special implement installs, put by crane to being transported into pipeline in battery truck；
9), shield launching prepares:
Pipeline and cable link to shield machine shield body by active well, guarantee shield machine just using connection, all pipelines are extended
Often work；
10), initial tunneling construction:
(1), negative ring pipe sheet assembling
Before negative ring pipe sheet assembling, should in tail sealing brush fill plug seal grease, after the negative endless tube piece of the first ring is assembled into, use
4~5 groups of jack complete moving back for section of jurisdiction；
(2), shield driving parameter setting
1., driving speed
According to the driving speed of shield machine, geological state, duration schedule requirement factor, and previous shield-tunneling construction experience is referred to, just
Beginning section driving speed primarily determines as 15~50mm/min；
2., in soil pressure storehouse plus foam, mud
Mud additional amount: part of path penetrating ground predominantly circle gravel, gravel layer adds mud amount to tunnel according to past construction experiences
Every ring cutting cuts 6~10% calculating of soil body volume, and the mud injection rate for tunneling every ring is 1m3~1.5m3；
Add mud pressure: the soil pressure in the general a little higher than native storehouse of the injection pressure of mud, mud injection pressure takes 0.15~
0.25MPa；
Foam additional amount: the composition ratio of foam is as follows: the composition of foam solution: additive foam 5%~7%, water 93%~95%；
Foam composition: it is mixed by 90~95% compressed airs and 5%~10% foam solution；Foam additional amount is cut with tunneling every ring cutting
The 1.25%~1.88% of soil body volume calculates, and the every ring of Shield Construction Method Used need to add the amount of foam solution to be 0.2m3~0.3m；
Add foam pressure: the soil pressure in the general a little higher than native storehouse of injection pressure, foam injection pressure is set as 0.28~
0.37MPa；
3., grouting at the tail of the shield machine pressure and grouting amount
Grouting pressure: injection pressure size is ordinarily selected to the sum that stratum soil pressure adds 0.1~0.2MPa, according to this bid section
Stratum soil property condition grouting pressure is tentatively set to 0.25MPa；
Grouting amount: grouting amount should be controlled 107%~128%；Secondary after-teeming slurry should find not to be filled up completely according to the measurement on ground
Position carry out second pulp feeding construction in time, dosage is determined according to actual conditions；
11), shield trolley originates:
After the completion of originating driving, the lengthening pipeline between shield machine and 1# trolley is removed, negative ring, reaction frame and shield are removed
Originate pedestal；Again it sets up track connecting bridge, belt conveyor, 1#~14# trolley are transformed into tunnel, adjustment track is high
Degree, carries out the driving of normal phase.
The beneficial effects of the present invention are:
1, the present invention uses shield machine separate launching technology, and large shield machine segmental hoisting is entered and originates vertical shaft, can effectively be subtracted
The small size for originating vertical shaft；
2, the present invention can save the Suporting structure set-up time, be rapidly completed and originate stage driving, reduce shield launching hole branch
Protection structure exposure duration reduces risk；
3, for the present invention by the equipment separate launching such as shield body and subsequent trolley, construction method is flexible, and it is convenient to operate, and effectively reduces and applies
Work cost and operation difficulty.
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
Detailed description of the invention
With reference to the accompanying drawing, by the way that detailed description of specific embodiments of the present invention, technical solution of the present invention will be made
And other beneficial effects are apparent.
Fig. 1 is the flow chart of separate launching shield technique application construction method in municipal sewerage engineering of the present invention.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
Separate launching shield technique application construction method in municipal sewerage engineering, step include:
1), starting well is arranged:
Shield machine length is 10m, and 1#-14# trolley need to be placed on ground, shield having a size of 16m*8m by launching shaft
Machine can just originate in short vertical shaft；
2), facility is arranged in starting well:
(1), shield reaction frame: using diagonal brace reaction shelf of door type, and material is the 20 of Q235#H profile steel welding composition, reaction frame are prefabricated
After forming, axial location and elevation are provided by survey crew, vertical shaft is hung in by crane, and carry out installation reinforcing, after the installation is completed
The verticality of reaction frame is detected, guarantee that reaction frame is vertical with shield driving axis；
(2), shield machine pedestal is installed: shield machine pedestal is girder made of being welded as fashioned iron, and the above is two rail, as
Guide rail when shield machine is appeared；Shield machine pedestal will be welded with the embedded iron on starting well bottom plate, and with fashioned iron and the borehole wall
Top jail；When shield machine pedestal elevation is installed, it is to be ensured that it is 15mm higher than design altitude after shield machine is in place, at the beginning of adjusting shield machine
Begin the posture tunneled；
3), shield machine examination is hung:
Shield machine is sling into liftoff 0.2m, is hovered 5 minutes, checks that confirmation shield machine, hoist cable, supporting surface, crane, foundation pit side-wall are equal
It is intact it is without exception after, and held with cable wind rope and hung shield machine held stationary, lifting can be commanded to run；
4), shield machine lifting is gone into the well:
Shield machine diameter 4.13m, long 10.5m, weight 110t use 350t crane when lifting, and shield machine center be in crane 8m and makees
In industry radius；Shield machine both ends are fastened with traction rope, and shield machine keeps horizontal after lifting, and crane makes shield by rotation, luffing
After machine reaches well head, slow off the hook；After shield machine and base into contact, constantly amendment, adjustment attitude of shield machine, it is ensured that shield master
Machine transfers designated position；After shield machine is stablized, U-shaped card ring is removed, shield machine lifting finishes；
5), hole soil stabilization:
It in order to guarantee the stabilization of hole surrounding soil, is reinforced using rotary churning pile form, rotary churning pile spacing are as follows: outside pumping plant portal
550@400 are used in 3 meters, remaining is 550@600；
Reinforcing scope are as follows:
Starting well: 8m on the outside of bored concrete pile, pipe centerline each 4m up and down；
Received well: 12m on the outside of received well, pipe centerline each 4m up and down；
6), rubber cord in hole is installed:
Rubber cord is hung on the pre-buried steel loop in hole with bolt, and is fixed with arc keeper plate of steel, then again in arc-shaped steel pressure
Prefabricated foldable fan-shaped steel plate is installed outside plate；When cutter head of shield machine enters hole, adjustment fanning strip to shield machine shell
Distance be 10mm or so, rubber curtain and fan type steel plate are headed into and are curved inwardly by the shell of shield machine, when shield machine shield tail steel
When wire brush has just enter into hole exposing section of jurisdiction, then fanning strip is adjusted, falls in it on section of jurisdiction, rubber is removed after the completion of initially tunneling
Cord；
7), hole bored concrete pile is cut:
7 days progress portal bored concrete piles are cut before originating, and using pneumatic pick according to from bottom to top, are carried out from both sides toward intermediate sequence
Manually cut；
8), delivery arrangement:
(1), earthwork transportation
After battery truck delivery soil bucket to soil outlet, soil bucket is put upside down to collection heatable adobe sleeping platform, dregs transportation vehicle collective conveyance by 100t crane
To spoil ground；
(2), section of jurisdiction is transported
Precast concrete section of jurisdiction is transported to behind construction site and first deposits in live section of jurisdiction storage pad, and when use is put with crane handling to electricity
On the flat car of bottle vehicle traction, and it is transported into pipeline；
(3), other goods transportations
The big part material of rail, sleeper is put with crane to fixation on flat car, is transported into pipeline within the pipe sheet assembling time；Even
It connects pressing plate, clamping plate and the bolt of rail and the arch screw bolt of pipeline driving, Seal Oil, lubricating oil smallclothes auxiliary material is used
After special implement installs, put by crane to being transported into pipeline in battery truck；
9), shield launching prepares:
Pipeline and cable link to shield machine shield body by active well, guarantee shield machine just using connection, all pipelines are extended
Often work；
10), initial tunneling construction:
(1), negative ring pipe sheet assembling
Before negative ring pipe sheet assembling, should in tail sealing brush fill plug seal grease, after the negative endless tube piece of the first ring is assembled into, use
4~5 groups of jack complete moving back for section of jurisdiction；
(2), shield driving parameter setting
1., driving speed
According to the driving speed of shield machine, geological state, duration schedule requirement factor, and previous shield-tunneling construction experience is referred to, just
Beginning section driving speed primarily determines as 15~50mm/min；
2., in soil pressure storehouse plus foam, mud
Mud additional amount: part of path penetrating ground predominantly circle gravel, gravel layer adds mud amount to tunnel according to past construction experiences
Every ring cutting cuts 6~10% calculating of soil body volume, and the mud injection rate for tunneling every ring is 1m3~1.5m3；
Add mud pressure: the soil pressure in the general a little higher than native storehouse of the injection pressure of mud, mud injection pressure takes 0.15~
0.25MPa；
Foam additional amount: the composition ratio of foam is as follows: the composition of foam solution: additive foam 5%~7%, water 93%~95%；
Foam composition: it is mixed by 90~95% compressed airs and 5%~10% foam solution；Foam additional amount is cut with tunneling every ring cutting
The 1.25%~1.88% of soil body volume calculates, and the every ring of Shield Construction Method Used need to add the amount of foam solution to be 0.2m3~0.3m；
Add foam pressure: the soil pressure in the general a little higher than native storehouse of injection pressure, foam injection pressure is set as 0.28~
0.37MPa；
3., grouting at the tail of the shield machine pressure and grouting amount
Grouting pressure: injection pressure size is ordinarily selected to the sum that stratum soil pressure adds 0.1~0.2MPa, according to this bid section
Stratum soil property condition grouting pressure is tentatively set to 0.25MPa；
Grouting amount: grouting amount should be controlled 107%~128%；Secondary after-teeming slurry should find not to be filled up completely according to the measurement on ground
Position carry out second pulp feeding construction in time, dosage is determined according to actual conditions；
11), shield trolley originates:
After the completion of originating driving, the lengthening pipeline between shield machine and 1# trolley is removed, negative ring, reaction frame and shield are removed
Originate pedestal；Again it sets up track connecting bridge, belt conveyor, 1#~14# trolley are transformed into tunnel, adjustment track is high
Degree, carries out the driving of normal phase.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. separate launching shield technique application construction method in municipal sewerage engineering, which is characterized in that step includes:
1), starting well is arranged:
Shield machine length is 10m, and 1#-14# trolley need to be placed on ground, shield having a size of 16m*8m by launching shaft
Machine can just originate in short vertical shaft；
2), facility is arranged in starting well:
(1), shield reaction frame: using diagonal brace reaction shelf of door type, and material is the 20 of Q235#H profile steel welding composition, reaction frame are prefabricated
After forming, axial location and elevation are provided by survey crew, vertical shaft is hung in by crane, and carry out installation reinforcing, after the installation is completed
The verticality of reaction frame is detected, guarantee that reaction frame is vertical with shield driving axis；
(2), shield machine pedestal is installed: shield machine pedestal is girder made of being welded as fashioned iron, and the above is two rail, as
Guide rail when shield machine is appeared；Shield machine pedestal will be welded with the embedded iron on starting well bottom plate, and with fashioned iron and the borehole wall
Top jail；When shield machine pedestal elevation is installed, it is to be ensured that it is 15mm higher than design altitude after shield machine is in place, at the beginning of adjusting shield machine
Begin the posture tunneled；
3), shield machine examination is hung:
Shield machine is sling into liftoff 0.2m, is hovered 5 minutes, checks that confirmation shield machine, hoist cable, supporting surface, crane, foundation pit side-wall are equal
It is intact it is without exception after, and held with cable wind rope and hung shield machine held stationary, lifting can be commanded to run；
4), shield machine lifting is gone into the well:
Shield machine center is in crane 8m operating radius；Shield machine both ends are fastened with traction rope, and shield machine keeps water after lifting
It is flat, after crane makes shield machine reach well head by rotation, luffing, slow off the hook；After shield machine and base into contact, constantly repair
Just, attitude of shield machine is adjusted, it is ensured that shield host transfers designated position；After shield machine is stablized, U-shaped card ring, shield machine are removed
Rigging out；
5), hole soil stabilization:
It in order to guarantee the stabilization of hole surrounding soil, is reinforced using rotary churning pile form, rotary churning pile spacing are as follows: outside pumping plant portal
550@400 are used in 3 meters, remaining is 550@600；
Reinforcing scope are as follows:
Starting well: 8m on the outside of bored concrete pile, pipe centerline each 4m up and down；
Received well: 12m on the outside of received well, pipe centerline each 4m up and down；
6), rubber cord in hole is installed:
Rubber cord is hung on the pre-buried steel loop in hole with bolt, and is fixed with arc keeper plate of steel, then again in arc-shaped steel pressure
Prefabricated foldable fan-shaped steel plate is installed outside plate；When cutter head of shield machine enters hole, adjustment fanning strip to shield machine shell
Distance be 10mm or so, rubber curtain and fan type steel plate are headed into and are curved inwardly by the shell of shield machine, when shield machine shield tail steel
When wire brush has just enter into hole exposing section of jurisdiction, then fanning strip is adjusted, falls in it on section of jurisdiction, rubber is removed after the completion of initially tunneling
Cord；
7), hole bored concrete pile is cut:
7 days progress portal bored concrete piles are cut before originating, and using pneumatic pick according to from bottom to top, are carried out from both sides toward intermediate sequence
Manually cut；
8), delivery arrangement:
(1), earthwork transportation
After battery truck delivery soil bucket to soil outlet, soil bucket is put upside down to collection heatable adobe sleeping platform, dregs transportation vehicle collective conveyance by 100t crane
To spoil ground；
(2), section of jurisdiction is transported
Precast concrete section of jurisdiction is transported to behind construction site and first deposits in live section of jurisdiction storage pad, and when use is put with crane handling to electricity
On the flat car of bottle vehicle traction, and it is transported into pipeline；
(3), other goods transportations
The big part material of rail, sleeper is put with crane to fixation on flat car, is transported into pipeline within the pipe sheet assembling time；Even
It connects pressing plate, clamping plate and the bolt of rail and the arch screw bolt of pipeline driving, Seal Oil, lubricating oil smallclothes auxiliary material is used
After special implement installs, put by crane to being transported into pipeline in battery truck；
9), shield launching prepares:
Pipeline and cable link to shield machine shield body by active well, guarantee shield machine just using connection, all pipelines are extended
Often work；
10), initial tunneling construction:
(1), negative ring pipe sheet assembling
Before negative ring pipe sheet assembling, should in tail sealing brush fill plug seal grease, after the negative endless tube piece of the first ring is assembled into, use
4~5 groups of jack complete moving back for section of jurisdiction；
(2), shield driving parameter setting
1., driving speed
According to the driving speed of shield machine, geological state, duration schedule requirement factor, and previous shield-tunneling construction experience is referred to, just
Beginning section driving speed primarily determines as 15~50mm/min；
2., in soil pressure storehouse plus foam, mud
Mud additional amount: part of path penetrating ground predominantly circle gravel, gravel layer adds mud amount to cut soil body volume to tunnel every ring cutting
6~10% calculate, and the mud injection rate for tunneling every ring is 1m3~1.5m3；
Add mud pressure: the soil pressure in the general a little higher than native storehouse of the injection pressure of mud, mud injection pressure takes 0.15~
0.25MPa；
Foam additional amount: the composition ratio of foam is as follows: the composition of foam solution: additive foam 5%~7%, water 93%~95%；
Foam composition: it is mixed by 90~95% compressed airs and 5%~10% foam solution；Foam additional amount is cut with tunneling every ring cutting
The 1.25%~1.88% of soil body volume calculates, and the every ring of Shield Construction Method Used need to add the amount of foam solution to be 0.2m3~0.3m；
Add foam pressure: the soil pressure in the general a little higher than native storehouse of injection pressure, foam injection pressure is set as 0.28~
0.37MPa；
3., grouting at the tail of the shield machine pressure and grouting amount
Grouting pressure: injection pressure size is ordinarily selected to the sum that stratum soil pressure adds 0.1~0.2MPa, according to this bid section
Stratum soil property condition grouting pressure is tentatively set to 0.25MPa；
Grouting amount: grouting amount should be controlled 107%~128%；Secondary after-teeming slurry should find not to be filled up completely according to the measurement on ground
Position carry out second pulp feeding construction in time, dosage is determined according to actual conditions；
11), shield trolley originates:
After the completion of originating driving, the lengthening pipeline between shield machine and 1# trolley is removed, negative ring, reaction frame and shield are removed
Originate pedestal；Again it sets up track connecting bridge, belt conveyor, 1#~14# trolley are transformed into tunnel, adjustment track is high
Degree, carries out the driving of normal phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348004.2A CN108952733A (en) | 2017-05-17 | 2017-05-17 | Separate launching shield technique application construction method in municipal sewerage engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348004.2A CN108952733A (en) | 2017-05-17 | 2017-05-17 | Separate launching shield technique application construction method in municipal sewerage engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108952733A true CN108952733A (en) | 2018-12-07 |
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| CN201710348004.2A Pending CN108952733A (en) | 2017-05-17 | 2017-05-17 | Separate launching shield technique application construction method in municipal sewerage engineering |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695455A (en) * | 2018-12-21 | 2019-04-30 | 中铁十二局集团有限公司 | Method of reseptance in a kind of earth pressure balanced shield, EPBS pure water |
| CN109763827A (en) * | 2019-03-29 | 2019-05-17 | 中山大学 | A kind of vertical shaft shield construction method and vertical shaft shield machine |
| CN110185458A (en) * | 2019-07-04 | 2019-08-30 | 中建五局土木工程有限公司 | Two-way shield launching method |
| CN110924960A (en) * | 2019-11-25 | 2020-03-27 | 中铁十六局集团北京轨道交通工程建设有限公司 | Subway construction method for shield starting before constructing station structure |
| CN111058860A (en) * | 2019-12-10 | 2020-04-24 | 中铁十四局集团隧道工程有限公司 | Cave opening construction method |
| CN111140240A (en) * | 2020-01-03 | 2020-05-12 | 中交一公局第三工程有限公司 | Split starting construction method for large-diameter earth pressure balance shield curve of sandy cobble stratum |
| CN111173528A (en) * | 2020-01-06 | 2020-05-19 | 中交一公局第三工程有限公司 | Large-diameter long-interval tunnel shield construction method for water-rich sandy gravel stratum |
| CN111350523A (en) * | 2020-03-27 | 2020-06-30 | 中建八局轨道交通建设有限公司 | Construction method and device for dismantling negative ring in limited space |
| CN112081595A (en) * | 2019-06-14 | 2020-12-15 | 宏润建设集团股份有限公司 | Shield construction method, and waterproof and monitoring method for shield construction |
| CN113006808A (en) * | 2021-04-23 | 2021-06-22 | 中铁六局集团有限公司交通工程分公司 | Construction method for viscous geological shield initial section to penetrate shallow soil-covered river channel downwards |
| CN113236264A (en) * | 2021-04-28 | 2021-08-10 | 中铁六局集团有限公司交通工程分公司 | Split starting construction method for shield of small clearance, upper soft and lower hard stratum |
| CN113833480A (en) * | 2021-09-29 | 2021-12-24 | 成都建工第九建筑工程有限公司 | Shield initial tunneling and arrival construction method |
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| CN109695455A (en) * | 2018-12-21 | 2019-04-30 | 中铁十二局集团有限公司 | Method of reseptance in a kind of earth pressure balanced shield, EPBS pure water |
| CN109763827A (en) * | 2019-03-29 | 2019-05-17 | 中山大学 | A kind of vertical shaft shield construction method and vertical shaft shield machine |
| CN112081595A (en) * | 2019-06-14 | 2020-12-15 | 宏润建设集团股份有限公司 | Shield construction method, and waterproof and monitoring method for shield construction |
| CN112081595B (en) * | 2019-06-14 | 2022-09-23 | 宏润建设集团股份有限公司 | Shield construction method, and waterproof and monitoring method for shield construction |
| CN110185458A (en) * | 2019-07-04 | 2019-08-30 | 中建五局土木工程有限公司 | Two-way shield launching method |
| CN110924960A (en) * | 2019-11-25 | 2020-03-27 | 中铁十六局集团北京轨道交通工程建设有限公司 | Subway construction method for shield starting before constructing station structure |
| CN111058860A (en) * | 2019-12-10 | 2020-04-24 | 中铁十四局集团隧道工程有限公司 | Cave opening construction method |
| CN111140240A (en) * | 2020-01-03 | 2020-05-12 | 中交一公局第三工程有限公司 | Split starting construction method for large-diameter earth pressure balance shield curve of sandy cobble stratum |
| CN111173528A (en) * | 2020-01-06 | 2020-05-19 | 中交一公局第三工程有限公司 | Large-diameter long-interval tunnel shield construction method for water-rich sandy gravel stratum |
| CN111350523B (en) * | 2020-03-27 | 2021-07-13 | 中建八局轨道交通建设有限公司 | Construction method and device for dismantling negative ring in limited space |
| CN111350523A (en) * | 2020-03-27 | 2020-06-30 | 中建八局轨道交通建设有限公司 | Construction method and device for dismantling negative ring in limited space |
| CN113006808A (en) * | 2021-04-23 | 2021-06-22 | 中铁六局集团有限公司交通工程分公司 | Construction method for viscous geological shield initial section to penetrate shallow soil-covered river channel downwards |
| CN113236264A (en) * | 2021-04-28 | 2021-08-10 | 中铁六局集团有限公司交通工程分公司 | Split starting construction method for shield of small clearance, upper soft and lower hard stratum |
| CN113833480A (en) * | 2021-09-29 | 2021-12-24 | 成都建工第九建筑工程有限公司 | Shield initial tunneling and arrival construction method |
| CN113833480B (en) * | 2021-09-29 | 2024-05-24 | 成都建工第九建筑工程有限公司 | Construction method for initial tunneling and arrival of shield |
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Application publication date: 20181207 |