CN110043270A - Administer the construction method of Shield Tunnel in Soft Soil convergent deformation - Google Patents

Administer the construction method of Shield Tunnel in Soft Soil convergent deformation Download PDF

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Publication number
CN110043270A
CN110043270A CN201910397025.2A CN201910397025A CN110043270A CN 110043270 A CN110043270 A CN 110043270A CN 201910397025 A CN201910397025 A CN 201910397025A CN 110043270 A CN110043270 A CN 110043270A
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CN
China
Prior art keywords
tunnel
construction method
soft soil
convergent deformation
grouting pipe
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910397025.2A
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Chinese (zh)
Inventor
何小玲
张帆
黄斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Tunnel Engineering Co Ltd
Original Assignee
Shanghai Tunnel Engineering Co Ltd
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Filing date
Publication date
Application filed by Shanghai Tunnel Engineering Co Ltd filed Critical Shanghai Tunnel Engineering Co Ltd
Priority to CN201910397025.2A priority Critical patent/CN110043270A/en
Publication of CN110043270A publication Critical patent/CN110043270A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001Improving soil or rock, e.g. by freezing; Injections

Abstract

The present invention relates to a kind of construction methods for administering Shield Tunnel in Soft Soil convergent deformation, comprising: following steps: S1: drilling on the ground of the opposite sides of tunnel outer straight down to the bottom surface absolute altitude in tunnel, forms guide hole;S2: providing mixing slurry, while mixing slurry being perfused into guide hole, forms the veiny injecting cement paste for being located at tunnel opposite sides.The present invention is constructed in the opposite sides of tunnel outer, is influenced on the structure in tunnel without drilling shield duct piece smaller.It is not necessarily to consider the service time in tunnel in the construction of tunnel outer, there are a fixed spacings between daily construction time more slip casting position and tunnel of the invention, farther out apart from tunnel outer surface, single grouting amount can be improved, to improve slip casting effect.

Description

Administer the construction method of Shield Tunnel in Soft Soil convergent deformation
Technical field
The present invention relates to the realm of building construction, espespecially a kind of construction method for administering Shield Tunnel in Soft Soil convergent deformation.
Background technique
Due to geological conditions (Seines types are mainly to flow plasticity silt clay or the soft plastic clay that is disturbed, silt and Sandy soil stratum) the vehicle peripheries construction such as current and underground space development, the load of tunnel upper landfill and side macroscopic destruction for a long time The influence of environment, shield tunnel in operation it is possible that relative settlement and convergent deformation (convergent deformation refers to Tunnel week Relative displacement variation.Convergency value can increase, and also can reduce, and see actual conditions), it such as controls, develops as one pleases not in time, it can Tunnel duct piece can be led to problems such as to generate faulting of slab ends, opening, Lining cracks, structural percolating water, influence the operation security in tunnel.At present The tunnel relative settlement in operation and convergent deformation are generally controlled by grouting and reinforcing.
It is a kind of for weak soil that Chinese patent 20110118680.3, which administers the construction method of Shield Tunnel in Soft Soil convergent deformation, The biliquid micro-destabilization slip-casting reinforced construction method of subway tunnel, the principle of the engineering method disclosed is: utilizing " double pump " by " biliquid Slurry " is got, and by special mixer dual slurry is sufficiently mixed, then slurries are injected the soil body, slurries by slip casting core pipe Under the effect of the pressure the soil body is rived, with the promotion of slip casting core pipe, veiny injecting cement paste is formed in the soil body, for tunnel Lower sleeping soil layer play the role of filling, densification and soil mass consolidation, intensity and deformation modulus, the control tunnel that can improve soil layer are heavy Drop, deformation take into account the smooth of tunnel line style while reinforcing to the soil layer that crouches under tunnel.The engineering method and traditional Grouting engineering Maximum difference is: the engineering method can information-aided construction, construction completely can be in small space, to surrounding enviroment and ground Traffic impact is minimum, and is able to satisfy the strict protection requirement to subway tunnel.
But the above-mentioned prior art is to drill shield duct piece in tunnel to construct, and is caused to tunnel structure slight It destroys, may cause new leakage disease when dealing with improperly.Tunnel in normal operation, daily only less than 3 hours Time, which can enter in tunnel, constructs, and construction efficiency is very low.
The above-mentioned prior art causes tunnel structure since tunnel outer surface is close in slip casting position in order to avoid grouting amount is excessive It destroys, only 80L, the Disease Treatment for completing one section of tunnel generally require the half a year even more long time to single hole single grouting amount.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, provides and a kind of administer Shield Tunnel in Soft Soil convergent deformation Construction method, solution drill shield duct piece destruction structure in tunnel in the prior art and be easy to cause leakage and slip casting inefficiency The problem of.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of construction method for administering Shield Tunnel in Soft Soil convergent deformation, comprising:
S1: drilling on the ground of the opposite sides of tunnel outer straight down to the bottom surface absolute altitude in the tunnel, shape At guide hole;And
S2: providing mixing slurry, while the mixing slurry being perfused into the guide hole, is formed and is located at the tunnel opposite sides Veiny injecting cement paste.
The present invention administer Shield Tunnel in Soft Soil convergent deformation construction method further improvement lies in that, the step S1 packet It includes:
At least a set of Grouting Pipe is provided, the Grouting Pipe is piled in the corresponding guide hole, so that the Grouting Pipe Bottom end be located at the bottom surface absolute altitude in the tunnel, and be installed with spacing between the Grouting Pipe and the tunnel.
The present invention administer Shield Tunnel in Soft Soil convergent deformation construction method further improvement lies in that, the step S2 packet It includes:
The mixing slurry is perfused into the Grouting Pipe simultaneously, forms the veiny slip casting for being located at the tunnel opposite sides Body.
The present invention administer Shield Tunnel in Soft Soil convergent deformation construction method further improvement lies in that, the step S2 is also Including the Grouting Pipe being moved up using dedicated tube drawing apparatus during slip casting, until being detached from ground.
The present invention administer Shield Tunnel in Soft Soil convergent deformation construction method further improvement lies in that, according to slip casting stream Amount, the single-unit height of Grouting Pipe, using dedicated tube drawing apparatus by the Grouting Pipe according to move up per minute 10 centimetres of speed to Upper movement.
The present invention administer Shield Tunnel in Soft Soil convergent deformation construction method further improvement lies in that,
Mixing slurry is provided, including waterglass slurry is provided and forms cement by 0.7~1.0 mixing of the ratio of mud with slurry system is mixed Slurry.
The present invention administer Shield Tunnel in Soft Soil convergent deformation construction method further improvement lies in that, multiple veinies Injecting cement paste is arranged along the length direction interval in the tunnel.
The present invention administer Shield Tunnel in Soft Soil convergent deformation construction method the utility model has the advantages that
The present invention is constructed in the opposite sides of tunnel outer, is influenced without drilling shield duct piece on the structure in tunnel It is smaller.It is not necessarily to consider the service time in tunnel in the construction of tunnel outer, the daily construction time is more, substantially increases construction effect Rate is solved and is constructed in the prior art due to drilling shield duct piece in tunnel, and slight destruction is caused to tunnel structure, It may cause new leakage disease when dealing with improperly.Tunnel in normal operation, the time only less than 3 hours can daily It is constructed with entering in tunnel, the low-down problem of construction efficiency.
There are spacing between slip casting position of the invention and tunnel, farther out apart from tunnel outer surface, single slip casting can be improved Amount, to improve slip casting effect.The prior art is solved since tunnel outer surface is close in slip casting position, in order to avoid grouting amount mistake Tunnel structure is caused to destroy greatly, only 80L, the Disease Treatment for completing one section of tunnel generally require half a year even to single hole single grouting amount The problem of more long time.
For the present invention when administering convergent deformation disease, construction effect is preferable, can satisfy demand.
Detailed description of the invention
Fig. 1 and Fig. 2 is the construction procedure schematic diagram for the construction method that the present invention administers Shield Tunnel in Soft Soil convergent deformation.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to fig. 1 and Fig. 2, it is shown that the present invention administers the construction procedure of the construction method of Shield Tunnel in Soft Soil convergent deformation Schematic diagram.Referring to figs. 1 and 2, the construction method of present invention improvement Shield Tunnel in Soft Soil convergent deformation includes:
S1: it is drilled straight down on the ground of the opposite sides outside tunnel 10 to the bottom surface absolute altitude in the tunnel 10 Place forms guide hole;And
S2: providing mixing slurry, while the mixing slurry being perfused into the guide hole, is formed and is located at the tunnel opposite sides Veiny injecting cement paste 40.
In the present embodiment, the Seines types that the present invention is applicable in are mainly the soft modeling flowing plasticity silt clay or being disturbed Clay, silt and sandy soil stratum, suitable for diameter for 6.2m and with the shield tunnel of top external diameter.
Since geological conditions vehicle is current for a long time and underground space development, the load of tunnel upper landfill and side macroscopic destruction The influence of peripheries construction environment is waited, the shield tunnel in operation is it is possible that relative settlement and convergent deformation.In conjunction with Fig. 1 institute Show, convergent deformation refers to the relative displacement variation in the hole week in tunnel 10.Its section becomes oval tunnel 10a by circular tunnel 10. If controlled not in time, develop as one pleases, may cause tunnel duct piece generation faulting of slab ends, opening, Lining cracks, structural percolating water etc. and ask Topic, influences the operation security in tunnel.
In the present embodiment, between length direction of the finally formed multiple veiny injecting cement pastes 40 along the tunnel 10 Prevent tunnel 10 from deforming using the support strength of the earthwork of veiny injecting cement paste Strengthening Tunnel opposite sides every setting.
A better embodiment of the construction method of Shield Tunnel in Soft Soil convergent deformation, the step are administered as the present invention S1 includes:
At least a pair of of Grouting Pipe 30 is provided, the Grouting Pipe 30 is piled in the corresponding guide hole, so that the note The bottom end of slurry pipe 30 is located at the bottom surface absolute altitude in the tunnel 10, and between being installed between the Grouting Pipe 30 and the tunnel 10 Away from.
A better embodiment of the construction method of Shield Tunnel in Soft Soil convergent deformation, the step are administered as the present invention S2 includes:
The mixing slurry is perfused into the Grouting Pipe 30 simultaneously, forms the veiny note for being located at 10 opposite sides of tunnel Slurry 40.
A better embodiment of the construction method of Shield Tunnel in Soft Soil convergent deformation, the step are administered as the present invention S2 further includes being moved up the Grouting Pipe 30 using dedicated tube drawing apparatus during slip casting, until being detached from ground.
Specifically, the convergent deformation in the tunnel 10 is carried out by personal monitoring and automatic detecting instrument during slip casting And horizontal displacement monitoring.
Inside during slip casting in the tunnel 10 carries out artificial apparent observation to tunnel axis and segment deformation.
It further include that grouting pump, flow instrument, mixer are provided before slip casting, by the grouting pump, the flow instrument, the mixing Device is connected to Grouting Pipe 30.
The better embodiment that the construction method of Shield Tunnel in Soft Soil convergent deformation is administered as the present invention, provides mixing Slurry, including waterglass slurry is provided and forms cement slurry by 0.7~1.0 mixing of the ratio of mud with slurry system is mixed.
The better embodiment that the construction method of Shield Tunnel in Soft Soil convergent deformation is administered as the present invention, according to slip casting The single-unit height of flow, Grouting Pipe, using dedicated tube drawing apparatus by the Grouting Pipe 30 according to the speed for moving up 10 centimetres per minute Degree moves up.
The construction method for administering Shield Tunnel in Soft Soil convergent deformation to the present invention below illustrates:
According to the design of designing institute, setting-out is measured by monitoring unit, determines the hole location and drilling depth for needing to drill;
With Atlas equipment or " boring vibration " all-in-one machine drilling, Grouting Pipe is set into subsurface to facilitate;
With special equipment, Grouting Pipe is set into underground layer by root according to the slip casting depth in each hole;In the present embodiment, it infuses The bottom of slurry pipe is set at the bottom surface absolute altitude in tunnel.
Grouting pump, flow instrument, mixer and Grouting Pipe etc. are connected by grouting pipeline, reflux is opened and checks whether pipeline leads to Freely.
With mixing slurry system by 0.7~1.0 mixing cement slurry of the ratio of mud;
Slip casting is carried out using double pump two fluid grouting method, while carrying out slip casting in the opposite sides in tunnel, guarantees tunnel Opposite sides stress balance.Side tube drawing, the progress of slow continuous uniform, pipe-pulling speed and note are starched using dedicated tube drawing apparatus marginal not Slurry flow, slip casting single-unit height, grouting amount, which match, about to be pulled out 10cm per minute and (can specifically be pulled out according to actual monitoring data point reuse Pipe promotes speed);
Slip casting is completed as required, and Grouting Pipe is stagnated 5 minutes or so, after slurries initial set, will be infused using dedicated tube drawing apparatus Slurry pipe is all pulled out, and single slip casting is completed.
Further, the axis in tunnel, the deformation of section of jurisdiction are carried out by professional monitoring unit while mortar depositing construction tight Monitoring:
1) convergent deformation, the horizontal displacement monitoring of tunnel structure are carried out by personal monitoring;
2) automatic monitoring is carried out to tunnel structure convergent deformation;Automatic detecting instrument not only ensure that the safety of construction but also It ensure that the timeliness of data;
3) during slip casting, full-time staff is specified, the apparent of tunnel is checked, to prevent unexpected generation.
The present invention administers having the beneficial effect that for the construction method of Shield Tunnel in Soft Soil convergent deformation
The present invention is constructed in the opposite sides of tunnel outer, is influenced without drilling shield duct piece on the structure in tunnel It is smaller.It is not necessarily to consider the service time in tunnel in the construction of tunnel outer, the daily construction time is more, substantially increases construction effect Rate is solved and is constructed in the prior art due to drilling shield duct piece in tunnel, and slight destruction is caused to tunnel structure, It may cause new leakage disease when dealing with improperly.Tunnel in normal operation, the time only less than 3 hours can daily It is constructed with entering in tunnel, the low-down problem of construction efficiency.
There are a fixed spacings, and single farther out apart from tunnel outer surface can be improved between slip casting position of the invention and tunnel Grouting amount, to improve slip casting effect.The prior art is solved since tunnel outer surface is close in slip casting position, in order to avoid slip casting Measure it is excessive cause tunnel structure to destroy, only 80L, the Disease Treatment for completing one section of tunnel generally require half a year to single hole single grouting amount The problem of even more long time.
For the present invention when administering convergent deformation disease, construction effect is preferable, can satisfy demand.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this Invention will be using the range that the appended claims define as protection scope of the present invention.

Claims (7)

1. a kind of construction method for administering Shield Tunnel in Soft Soil convergent deformation, which comprises the steps of:
S1: it is drilled straight down to the bottom surface absolute altitude in the tunnel on the ground of the opposite sides of tunnel outer, formation is led Hole;And
S2: providing mixing slurry, while the mixing slurry being perfused into the guide hole, forms the arteries and veins for being located at the tunnel opposite sides Shape injecting cement paste.
2. administering the construction method of Shield Tunnel in Soft Soil convergent deformation as described in claim 1, which is characterized in that the step S1 includes:
At least a set of Grouting Pipe is provided, the Grouting Pipe is piled in the corresponding guide hole, so that the bottom of the Grouting Pipe End is located at the bottom surface absolute altitude in the tunnel, and is installed with spacing between the Grouting Pipe and the tunnel.
3. administering the construction method of Shield Tunnel in Soft Soil convergent deformation as claimed in claim 2, which is characterized in that the step S2 includes:
The mixing slurry is perfused into the Grouting Pipe simultaneously, forms the veiny injecting cement paste for being located at the tunnel opposite sides.
4. administering the construction method of Shield Tunnel in Soft Soil convergent deformation as claimed in claim 3, which is characterized in that the step S2 further includes being moved up the Grouting Pipe using dedicated tube drawing apparatus during slip casting, until being detached from ground.
5. administering the construction method of Shield Tunnel in Soft Soil convergent deformation as claimed in claim 4, which is characterized in that
According to flow rate of grouting, the single-unit height of Grouting Pipe, using the dedicated tube drawing apparatus by the Grouting Pipe according to per minute 10 centimetres of speed is moved up to move up.
6. administering the construction method of Shield Tunnel in Soft Soil convergent deformation as described in claim 1, which is characterized in that
Mixing slurry is provided, including waterglass slurry is provided and forms cement slurry by 0.7~1.0 mixing of the ratio of mud with slurry system is mixed.
7. administering the construction method of Shield Tunnel in Soft Soil convergent deformation as described in claim 1, which is characterized in that
Multiple veiny injecting cement pastes are arranged along the length direction interval in the tunnel.
CN201910397025.2A 2019-05-14 2019-05-14 Administer the construction method of Shield Tunnel in Soft Soil convergent deformation Pending CN110043270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910397025.2A CN110043270A (en) 2019-05-14 2019-05-14 Administer the construction method of Shield Tunnel in Soft Soil convergent deformation

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Application Number Priority Date Filing Date Title
CN201910397025.2A CN110043270A (en) 2019-05-14 2019-05-14 Administer the construction method of Shield Tunnel in Soft Soil convergent deformation

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104824A (en) * 2017-11-17 2018-06-01 浙江大学城市学院 A kind of Soft Soil Area slurry shield passes through existing constructing metro tunnel method
CN108678758A (en) * 2018-04-28 2018-10-19 青岛新华友建工集团股份有限公司 Major diameter slurry shield passes through shanty town settlement Control construction over long distances under the conditions of non-reinforced
CN108918012A (en) * 2018-07-16 2018-11-30 中铁十四局集团有限公司 One kind being used for Shield-bored tunnels country rock Disturbance stress monitoring method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104824A (en) * 2017-11-17 2018-06-01 浙江大学城市学院 A kind of Soft Soil Area slurry shield passes through existing constructing metro tunnel method
CN108678758A (en) * 2018-04-28 2018-10-19 青岛新华友建工集团股份有限公司 Major diameter slurry shield passes through shanty town settlement Control construction over long distances under the conditions of non-reinforced
CN108918012A (en) * 2018-07-16 2018-11-30 中铁十四局集团有限公司 One kind being used for Shield-bored tunnels country rock Disturbance stress monitoring method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
岳建平,田林亚主编: "《变形监测技术与应用》", 31 March 2014 *
许文: "南京河西地区地铁运营盾构隧道收敛变形的治理措施", 《现代交通技术》 *
黄斌等: "南京地铁隧道收敛变形整治实例", 《江西建材》 *

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Application publication date: 20190723

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