CN109667591A - A kind of construction method of the sharp radius curve section of shield tunnel - Google Patents
A kind of construction method of the sharp radius curve section of shield tunnel Download PDFInfo
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- CN109667591A CN109667591A CN201811615852.6A CN201811615852A CN109667591A CN 109667591 A CN109667591 A CN 109667591A CN 201811615852 A CN201811615852 A CN 201811615852A CN 109667591 A CN109667591 A CN 109667591A
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 238000005259 measurement Methods 0.000 claims abstract description 39
- 238000013461 design Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000012937 correction Methods 0.000 claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 claims description 25
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 5
- 230000007547 defect Effects 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 241000238097 Callinectes sapidus Species 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 abstract description 6
- 238000006062 fragmentation reaction Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007569 slipcasting 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
- E21D9/0621—Shield advancing devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
-
- 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
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of construction methods of the sharp radius curve section of shield tunnel, during shield tunnel construction, the every propulsion certain distance of shield machine, the automatic measurement system of shield machine is checked using minor radius measurement check method, the deviation between the shield attitude of shield machine and the design centre line in tunnel is controlled, and so that the shield attitude of shield machine is tended to the design centre line of the shield tunnel by shield correction.The present invention passes through the deviation between the shield attitude of control shield machine and the design centre line in tunnel, the deviation is set to meet national acceptance specification, simultaneously by reducing the deviation between shield attitude and the design centre line in tunnel, guarantee shield gap, waterstop is set according to tunnel curvilinear wedge amount, solves the quality problems of section of jurisdiction fragmentation, percolating water.
Description
Technical field
The present invention relates to shield method tunnel construction technical fields, more particularly, to a kind of sharp radius curve section of shield tunnel
Construction method.
Background technique
As long as the exploitation of the underground space and the construction of subway have many decades, Urban Underground new subway is by more and more
Existing underground building object space hinders, the tunnel-type that some subterranean tunnel routes are had to using sharp radius curve within 250m
Formula avoids existing underground building object group, and minor radius tunnel is following subway construction form in need of consideration, but due to existing
The restriction of metro shield technology, this form be not common.In the common Shield Construction Technique of subway construction, within 350 meters
Turning radius can be referred to as tight turn radius, generally using articulated shield machine come construction tunnel, due to tunnel turning radius
Small, the power of shield is that its main jack is withstood on the tunnel formed, and curve turning in minor radius tunnel is more anxious, and shield is very heavy
The thrust and tunnel contact of a curve on top, so cannot be born completely by tunnel, it can be with tunnel toward lateral offset, so existing
Tight turn radius misalignment of axe is big in shield technique, and since misalignment of axe is big, and shield correction is more when bad with posture,
So the common quality defect of section of jurisdiction fragmentation, percolating water is serious.
Summary of the invention
The purpose of the present invention is to provide a kind of construction methods of the sharp radius curve section of shield tunnel, to control minor radius
The deviation of curved tunnel axis solves the problems, such as the section of jurisdiction fragmentation occurred in shield tunnel construction, leakage.
In order to achieve the above object, the present invention provides a kind of construction method of the sharp radius curve section of shield tunnel,
During shield tunnel construction, the every propulsion certain distance of shield machine checks oneself of shield machine using minor radius measurement check method
Dynamic measuring system controls the deviation between the shield attitude of shield machine and the design centre line in tunnel, and is made by shield correction
The shield attitude of shield machine tends to the design centre line of the shield tunnel.
Optionally, the minor radius measurement check method, which refers to, introduces measure traverse line described in shield tunnel check from ground
The automatic measurement system of shield machine, the measure traverse line include multiple conducting wire transmitting points, between two neighboring conducting wire transmitting point
Line is intervisibility sight, when the intervisibility line-of-sight distance tunnel inner wall is close to 1.5 meters of curve center of circle side, according to plane curve
The distance between the two neighboring conducting wire transmitting point that internal diameter simulation calculates in tunnel maximum value, and according to two neighboring described
The distance between conducting wire transmitting point maximum value is arranged the conducting wire and transmits point.
Optionally, the measure traverse line further includes the hanging basket point for installing hanging basket, high according to the shield trolley in shield tunnel
Degree, shield tunnel diameter and the practical center axis are simulated visual between the automatic measurement system and hanging basket point
Range, in the visual range, the minimum distance of the hanging basket point and the automatic measurement system is first distance, described to hang
The maximum distance of basket point and the automatic measurement system is second distance.
Optionally, a hanging basket point setting is being at the first distance position apart from the automatic measurement system, with
The shield machine promote, when the distance between the hanging basket point and the automatic measurement system increase to the second distance
When, the Bluepoint of hanging is moved to apart from the automatic measurement system as at the first distance position.
Optionally, when the sharp radius curve section of the shield tunnel passes through bed shallow covering, using the shield of the shield machine
Structure posture predeformation method controls the deviation between the actual center line and design centre line of shield tunnel, and the shield attitude is pre-
It is pre- partially to the sharp radius curve section center of circle while deformation method refers to that the head of the shield machine, tail portion are pre- inclined downwards.
Optionally, when the sharp radius curve section of the shield tunnel passes through bed shallow covering, by adjusting the shield machine
The grouting amount of the synchronous grouting pipe of different location, the grouting amount for infusing the synchronous grouting pipe above the shield tunnel are greater than
The grouting amount of synchronous grouting pipe note below the shield tunnel, and the synchronization in the center of circle far from sharp radius curve section
The grouting amount of Grouting Pipe note is greater than the grouting amount of the synchronous grouting pipe note close to the center of circle of sharp radius curve section, shallow to overcome
Earthing region tunnel is easy to float, the defect that tunnel is deviated outward by shield thrust when minor-circle turn tunneling shield is constructed.
Optionally, the gap of the shield tail between shield tail and section of jurisdiction is calculated, and by between the shield correction adjustment shield tail
Gap makes between the shield tail and the section of jurisdiction without interference.
Optionally, when the gap of the shield tail is less than 1 centimetre, the shield machine promotes 1 endless tube piece distance to adjust the shield
Structure posture makes to state gap of the shield tail greater than 1 centimetre and carries out the shield correction again.
Optionally, the shield correction includes powerful small by adjusting the propelling cylinder hydraulic oil pressure of shield machine, makes shield
The shield attitude of machine tends to the design centre line of the shield tunnel.
Optionally, when carrying out shield correction, the semi-ring of side is opened in gap between the section of jurisdiction of the shield tunnel
Stick on waterstop in the section of jurisdiction.
In a kind of construction method of the sharp radius curve section of shield tunnel provided by the invention, in shield tunnel construction mistake
Cheng Zhong, the every propulsion certain distance of shield machine check the automatic measurement system of shield machine, control using minor radius measurement check method
Deviation between the shield attitude of shield machine and the design centre line in tunnel, and the shield attitude of shield machine is made by shield correction
Tend to the design centre line of the shield tunnel.The included automatic measurement system of shield machine is the metrical information by input and pushes away
Into when parameter calculate axis, it can not calculate shield machine and misalignment of axe when tunnel itself shifts, so
It needs that measure traverse line is manually introduced tunnel from ground and checks shield machine automatic measurement system, and rectified a deviation by shield and control shield
Deviation between the line of posture and tunnel design centre makes the deviation meet national acceptance specification, while by reducing shield
Deviation between structure posture and the design centre line in tunnel guarantees shield gap, and waterstop is arranged according to tunnel curvilinear wedge amount,
Solve the quality problems of section of jurisdiction fragmentation, percolating water.
Detailed description of the invention
Fig. 1 is the measure traverse line transmission figure that one embodiment of the invention provides；
Fig. 2 is the measure traverse line shield trolley section transmitting sectional view that one embodiment of the invention provides；
Fig. 3 is the measure traverse line shield trolley section transmitting main view that one embodiment of the invention provides；
Fig. 4 is the measure traverse line shield trolley section transmitting top view that one embodiment of the invention provides；
Fig. 5 is the pre- inclined schematic diagram of axis that one embodiment of the invention provides；
Fig. 6 is the synchronous grouting schematic diagram that one embodiment of the invention provides；
Fig. 7 is the gap of the shield tail schematic diagram that one embodiment of the invention provides；
Wherein: the section of jurisdiction 10-, 20- shield trolley, 30- hanging basket, 40- total station, 50- automatic measurement system, 60- shield machine,
71- the first synchronous grouting pipe, the one or two synchronous grouting pipe of 72-, 73- third synchronous grouting pipe, the 4th synchronous grouting pipe of 74-.
Specific embodiment
A specific embodiment of the invention is described in more detail below in conjunction with schematic diagram.According to following description and
Claims, advantages and features of the invention will become apparent from.It should be noted that attached drawing is all made of very simplified form and
Using non-accurate ratio, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
One embodiment of the invention provides a kind of construction method of the sharp radius curve section of shield tunnel, in shield tunnel construction
In the process, the every propulsion certain distance of shield machine checks the automatic measurement system of shield machine, control using minor radius measurement check method
Deviation between the shield attitude of shield machine processed and the design centre line in tunnel, and the shield appearance of shield machine is made by shield correction
State tends to the design centre line of the shield tunnel, makes the shield attitude of the shield machine and the design centre of the shield tunnel
Deviation between line meets national acceptance specification.Shield attitude is in the work progress of shield tunnel, to meet shield machine
The construction of driving needs, and by measurement or calculates obtained shield machine deviation shield tunnel design centre by automatic measurement system
The state of line, major parameter have horizontal departure, vertical missing and rotation angle.Shield correction refers to that shield attitude deviates tunnel
Design centre line, shield driver small makes shield appearance by adjusting shield driving oil cylinder hydraulic oil pressure is powerful in shield tunneling process
State tends to the process of the design centre line in tunnel.Shield correction is actually the mistake that shield is turned according to certain sweep
Journey, the sweep of shield correction turning and the design centre line for being less than tunnel.
As preferable embodiment, Fig. 1 is the measure traverse line transmission figure that one embodiment of the invention provides, as shown in Figure 1,
The minor radius measurement check method, which refers to, introduces the automatic survey that shield tunnel checks the shield machine from ground for measure traverse line
Amount system, the measure traverse line include multiple conducting wire transmitting points, and the line between two neighboring conducting wire transmitting point is intervisibility sight,
When the intervisibility line-of-sight distance tunnel inner wall is close to 1.5 meters of curve center of circle side, simulated according to internal diameter in plane curve tunnel
The distance between the two neighboring conducting wire transmitting point (being conducting wire transmitting point A and conducting wire transmitting point B respectively) calculated maximum value,
And the conducting wire is arranged according to the distance between two neighboring conducting wire transmitting point maximum value and transmits point.The smaller part of shield tunnel
Sighting condition difference limits the arrangement of the polygon control survey point in diametal curve section, and the shield tunnel is generally every in straightway subway
It lays the conducting wire for 200 meters or so and transmits point, lay the conducting wire for every 150 meters of general curve section and transmit point, at this
In embodiment, for the radius of the sharp radius curve section less than 250 meters, the sighting condition of the sharp radius curve section is poor, therefore adjacent
Distance is calculated by internal diameter simulation in plane curve tunnel between two conducting wire transmitting points.
As preferable embodiment, Fig. 2 is that the measure traverse line shield trolley section transmitting that one embodiment of the invention provides is cutd open
Face figure, Fig. 3 are the measure traverse line shield trolley section transmitting main views that one embodiment of the invention provides, and Fig. 4 is that the present invention one is implemented
The measure traverse line shield trolley section that example provides transmits top view, and as in Figure 2-4, the hanging basket 30 for being equipped with total station 40, which is hung, to be located at
The section of jurisdiction inner wall of shield tunnel, and between shield trolley 20 and fast section of jurisdiction 10 of binding.The measure traverse line further includes installation
The hanging basket point of hanging basket 30, according to 20 height of shield trolley, shield tunnel diameter and the mandrel in practice in shield tunnel
Line simulates the visual range between the automatic measurement system 50 and hanging basket point, in the visual range, the hanging basket
The minimum distance of point 30 and the automatic measurement system 50 is first distance, the hanging basket point 30 and the automatic measurement system 50
Maximum distance be second distance.One setting of hanging basket point 30 is being the first distance apart from the automatic measurement system 50
At position, as the shield machine promotes, when the distance between the hanging basket point 30 and the automatic measurement system 50 increase to
When the second distance, the Bluepoint 30 of hanging is moved to apart from the automatic measurement system as at the first distance position.
As preferable embodiment, when the sharp radius curve section of the shield tunnel passes through bed shallow covering, using institute
State the deviation between the actual center line and design centre line of the shield attitude predeformation method control shield tunnel of shield machine, institute
State shield attitude predeformation method refer to the shield machine head downwards it is pre- inclined while, to the curve center of circle it is pre- partially.In this reality
It applies in example, the shield machine 60 is articulated shield machine, selects articulated shield machine, bed shallow covering tunnel is easy to float, small
Tunnel is deviated by shield thrust to far from the center of curve when radius curve tunneling shield is constructed, by the head of shield machine to leaning on
Nearly sharp radius curve section center of circle direction deviates 20~30 millimeters, while offseting downward 20~30 millimeters, by the tail of shield machine
Portion deviates 20~30 millimeters to close to sharp radius curve section center of circle direction, while offseting downward 40~50 millimeters, in shield
Tunnel is so tested in specification by the axle power offset successor generated under the influence of small-radius shield thrust and the buoyancy of shallow earthing tunnel
Within the scope of the misalignment of axe of receipts.Fig. 5 is the pre- inclined schematic diagram of axis that one embodiment of the invention provides, as shown in figure 5, L3 is shield
The propulsion center line of machine 60, L2 are the actual center line of shield tunnel, and L1 is the design centre line of shield tunnel, final shield tunnel
The actual center line L2 in road tends to the design centre line L1 of shield tunnel, and deviation meets national acceptance specification.
Make as preferable embodiment by adjusting the grouting amount of the synchronous grouting pipe of the shield machine different location
The grouting amount of synchronous grouting pipe note above the shield tunnel is greater than the synchronous grouting below the shield tunnel
The grouting amount of pipe note, and the grouting amount of the synchronous grouting pipe note in the center of circle far from sharp radius curve section is greater than close to minor radius
The grouting amount of the synchronous grouting pipe note in the center of circle of curved section, to overcome bed shallow covering tunnel to be easy to float, minor radius turns
The defect that tunnel is deviated outward by shield thrust when curved tunneling shield is constructed.Fig. 6 is the synchronous note that one embodiment of the invention provides
Schematic diagram is starched, as shown in fig. 6, in this embodiment, the curve center of circle C is located on the left of shield machine, the synchronous grouting pipe includes
Second synchronous grouting pipe, 72,225 ° of sides in 71,135 ° of directions of the first synchronous grouting pipe of 45 ° of directions (being positive in a counterclockwise direction)
To third synchronous grouting pipe 73 and 315 ° of directions the 4th synchronous grouting pipe 74, slip casting ratio be 44%:38%:9%:
9%.
As preferable embodiment, the section of jurisdiction fragmentation is mainly the interference between the shield tail of shield machine and the section of jurisdiction
It causes, calculates the gap of the shield tail between the shield tail and the section of jurisdiction, and the gap of the shield tail is adjusted by shield correction,
Make between the shield tail and the section of jurisdiction without interference.Guarantee shield gap and waterstop, solution are arranged according to tunnel curvilinear wedge amount
Determined section of jurisdiction fragmentation, percolating water quality problems.
Fig. 7 is the gap of the shield tail schematic diagram that one embodiment of the invention provides, as shown in fig. 7, close to the shield machine 60
80 endface position of section of jurisdiction to measure gap between the shield tail and the section of jurisdiction be R1+R2, shield attitude head
Horizontal departure is △ h, and shield attitude tail portion horizontal departure is △ t (being negative close to the curve center of circle, be positive far from the curve center of circle), institute
Stating shield machine overall length is D1, and it is D2 that the section of jurisdiction, which enters the shield tail length,.Then the gap of the shield tail is R0:
R0=R2- (△ h- △ t) × D2/D1+R1+ (△ h- △ t) × D2/D1.
When the gap of the shield tail is less than 1 centimetre, the shield machine promotes 1 endless tube piece distance to adjust the shield attitude,
Make to state gap of the shield tail and carries out the shield correction again greater than 1 centimetre.
As preferable embodiment, the shield correction includes the propelling cylinder hydraulic oil pressure by adjusting shield machine
Size makes the shield attitude of shield machine tend to the design centre line of the shield tunnel.It is adjacent when carrying out shield correction
Gap is opened between two semi-ring sections of jurisdiction, and section of jurisdiction described in the semi-ring of side is opened in gap between the section of jurisdiction of the shield tunnel and is added
Waterstop is pasted, prevents original waterstop from not having Effective Compaction, water-stagnating effect weakens and causes to leak.
In conclusion during shield tunnel construction, the every propulsion certain distance of shield machine is measured using minor radius and is checked
Method checks the automatic measurement system of shield machine, controls inclined between the shield attitude of shield machine and the design centre line in tunnel
Difference, and so that the shield attitude of shield machine is tended to the design centre line of the shield tunnel by shield correction, make the shield of shield machine
Deviation between structure posture and the design centre line of the shield tunnel meets national acceptance specification.
The above is only a preferred embodiment of the present invention, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical solution of the present invention, to the invention discloses technical solution and
Technology contents make the variation such as any type of equivalent replacement or modification, belong to the content without departing from technical solution of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (10)
1. a kind of construction method of the sharp radius curve section of shield tunnel, during shield tunnel construction, the every propulsion of shield machine
Certain distance is checked the automatic measurement system of shield machine using minor radius measurement check method, controls the shield attitude of shield machine
Deviation between the design centre line in tunnel, and so that the shield attitude of shield machine is tended to the shield tunnel by shield correction
Design centre line.
2. the construction method of the sharp radius curve section of shield tunnel according to claim 1, which is characterized in that the smaller part
Diameter measurement check method, which refers to, introduces the automatic measurement system that shield tunnel checks the shield machine, institute from ground for measure traverse line
Stating measure traverse line includes multiple conducting wire transmitting points, and the line between two neighboring conducting wire transmitting point is intervisibility sight, described logical
When depending on line-of-sight distance tunnel inner wall close to 1.5 meters of curve center of circle side, according to the phase that internal diameter simulation calculates in plane curve tunnel
The distance between adjacent two conducting wire transmitting points maximum value, and most according to the distance between two neighboring described conducting wire transmitting point
Big value is arranged the conducting wire and transmits point.
3. the construction method of the sharp radius curve section of shield tunnel according to claim 2, which is characterized in that the measurement
Conducting wire further includes the hanging basket point for installing hanging basket, according to the shield trolley height in shield tunnel, shield tunnel diameter and described
Practical center axis simulates the visual range between the automatic measurement system and hanging basket point, in the visual range,
The minimum distance of the hanging basket point and the automatic measurement system is first distance, the hanging basket point and the automatic measurement system
Maximum distance be second distance.
4. the construction method of the sharp radius curve section of shield tunnel according to claim 3, which is characterized in that hung described in one
The setting of basket point is being at the first distance position, as the shield machine promotes, when described apart from the automatic measurement system
When the distance between hanging basket point and the automatic measurement system increase to the second distance, the Bluepoint of hanging is moved to distance
The automatic measurement system is at the first distance position.
5. the construction method of the sharp radius curve section of shield tunnel according to claim 1, which is characterized in that the shield
When the sharp radius curve section in tunnel passes through bed shallow covering, shield is controlled using the shield attitude predeformation method of the shield machine
Deviation between the actual center line and design centre line in tunnel, the shield attitude predeformation method refer to the shield machine
It is pre- partially to the sharp radius curve section center of circle while head, tail portion are pre- inclined downwards.
6. the construction method of the sharp radius curve section of shield tunnel according to claim 1 or 5, which is characterized in that described
When the sharp radius curve section of shield tunnel passes through bed shallow covering, by adjusting the synchronous grouting pipe of the shield machine different location
Grouting amount, the grouting amount for infusing the synchronous grouting pipe above the shield tunnel be greater than the shield tunnel below institute
The grouting amount of synchronous grouting pipe note is stated, and the grouting amount of the synchronous grouting pipe note in the center of circle far from sharp radius curve section is greater than
Close to the grouting amount of the synchronous grouting pipe note in the center of circle of sharp radius curve section, to overcome bed shallow covering tunnel to be easy
Defect floating, that tunnel is deviated outward by shield thrust when minor-circle turn tunneling shield is constructed.
7. the construction method of the sharp radius curve section of shield tunnel according to claim 1, which is characterized in that calculate shield tail
Gap of the shield tail between section of jurisdiction, and the gap of the shield tail is adjusted by shield correction, make the shield tail and the section of jurisdiction
Between without interference.
8. the construction method of the sharp radius curve section of shield tunnel according to claim 7, which is characterized in that when the shield
When tail gap is less than 1 centimetre, the shield machine promotes 1 endless tube piece distance to adjust the shield attitude, makes to state gap of the shield tail greater than 1
Centimetre the shield correction is carried out again.
9. the construction method of the sharp radius curve section of shield tunnel according to claim 1, which is characterized in that the shield
Correction include it is powerful small by adjusting the propelling cylinder hydraulic oil pressure of shield machine, so that the shield attitude of shield machine is tended to the shield
The design centre line in tunnel.
10. the construction method of the sharp radius curve section of shield tunnel according to claim 1, which is characterized in that carrying out
When the shield is rectified a deviation, waterstop is sticked in section of jurisdiction described in the semi-ring of gap opening side between the section of jurisdiction of the shield tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811615852.6A CN109667591B (en) | 2018-12-27 | 2018-12-27 | Construction method of small-radius curve segment of shield tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615852.6A CN109667591B (en) | 2018-12-27 | 2018-12-27 | Construction method of small-radius curve segment of shield tunnel |
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| CN109667591A true CN109667591A (en) | 2019-04-23 |
| CN109667591B CN109667591B (en) | 2020-10-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130910A (en) * | 2019-05-22 | 2019-08-16 | 重庆大学 | Earth pressure balanced shield, EPBS small curve radius tunneling shield driving method |
| CN111101955A (en) * | 2019-11-11 | 2020-05-05 | 中铁隧道局集团有限公司 | Construction method for ultra-large diameter shield to penetrate through small-radius curve tunnel section |
| CN114183152A (en) * | 2021-12-07 | 2022-03-15 | 中铁隧道局集团有限公司 | Method for controlling shield attitude in small-radius multi-curve subway shield construction |
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| CN204591286U (en) * | 2015-04-27 | 2015-08-26 | 浙江大学城市学院 | A kind of small curvature radius tunneling shield cardan shaft line traffic control mechanism |
| CN106382121A (en) * | 2016-12-05 | 2017-02-08 | 中交第三航务工程局有限公司 | Measuring method for subway tunnel shield excavation |
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2018
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| DE2441554A1 (en) * | 1973-12-17 | 1975-06-19 | Continental Oil Co | METHOD OF REMOVING A MINERAL DEPOSIT |
| CN104655092A (en) * | 2013-11-25 | 2015-05-27 | 天津城建隧道股份有限公司 | Triangular single well directional measurement method used in subway shield construction |
| CN204591286U (en) * | 2015-04-27 | 2015-08-26 | 浙江大学城市学院 | A kind of small curvature radius tunneling shield cardan shaft line traffic control mechanism |
| CN106382121A (en) * | 2016-12-05 | 2017-02-08 | 中交第三航务工程局有限公司 | Measuring method for subway tunnel shield excavation |
Cited By (4)
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| CN110130910A (en) * | 2019-05-22 | 2019-08-16 | 重庆大学 | Earth pressure balanced shield, EPBS small curve radius tunneling shield driving method |
| CN111101955A (en) * | 2019-11-11 | 2020-05-05 | 中铁隧道局集团有限公司 | Construction method for ultra-large diameter shield to penetrate through small-radius curve tunnel section |
| CN114183152A (en) * | 2021-12-07 | 2022-03-15 | 中铁隧道局集团有限公司 | Method for controlling shield attitude in small-radius multi-curve subway shield construction |
| CN114183152B (en) * | 2021-12-07 | 2023-09-12 | 中铁隧道局集团有限公司 | Method for controlling shield posture in small-radius multi-curve subway shield construction |
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