CN1090708C - Piston-type shield and pipeline construction method thereof - Google Patents
Piston-type shield and pipeline construction method thereof Download PDFInfo
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- CN1090708C CN1090708C CN98104630A CN98104630A CN1090708C CN 1090708 C CN1090708 C CN 1090708C CN 98104630 A CN98104630 A CN 98104630A CN 98104630 A CN98104630 A CN 98104630A CN 1090708 C CN1090708 C CN 1090708C
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- piston
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- type shield
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Abstract
The present invention relates to a piston type shield and a method for digging underground pipelines, which belongs to pipeline construction facilities. The cross section of the support shell of the piston type shield can be divided into upper rectangles and lower rectangles; each of the rectangles is provided with a left oblique piston 2 and a right oblique piston 2 and a big piston 3 arranged in the middle. Every two pistons are separated by a separation rack; the oblique pistons and the big piston respectively move on a fixed pile 29 through a movable plate 25 and assemble and disassemble a support belt to cooperate a covering plate behind the pistons. The pistons can advance when switched on; sandy soil can be dug out when the pistons are enclosed; then, the outer shell is pushed to advance. The present invention is suitable for the digging of fine sand layers and slurry layers with strong fluidity, oblique working surface and easy landslip for the construction of pipelines and tunnels.
Description
The invention belongs to the pipeline construction facility, a kind of piston-type shield and pipeline construction method thereof.
In the not slot grooving of various underground pipelines; run into the weak soil layer of head under the highland through regular meeting; pass through saturated soil layer under water; drifting sand layer; the complicated geological conditions such as drifting sand layer that underground undercurrent is arranged, in these cases, with existing various construction technology constructions; be easy to shoving of quicksand and mud occur, cause constructional difficulties and landslide incident.In the existing construction gripper shoe method of support, slip casting method, freezing process, mortar gunite method, thermal consolidating method, closed shield method are arranged, waterpower driving pipe jacking method and waterpower shield method etc.
The purpose of this invention is to provide a kind of piston-type shield and pipeline construction method thereof, to make it have a safety good, superiority such as cost is low, progress is fast.
Adopt following technical scheme to realize the foregoing invention purpose.
The job practices of described piston-type shield driving pipeline is divided into upper and lower several rectangle in its shield structure housing, two oblique pistons and middle big piston about being provided with respectively in each rectangle.Tiltedly the piston driving is preceding, for intermediate piston dismounting support belt provides the space, tiltedly move piston portable plate front and back on spud pile, oblique piston is to be opened and closed, the dismounting of the support belt of intermediate piston is piston and opens and closed, support belt can move in the support chamber of being made up of long narrow steel plate under traction, support chamber so that whole supporting surface fills up, is made the supporting surface sealing, and back shroud is equipped with at the piston rear portion, piston is when opening shape, piston can jacking, when piston is closed, can take off back shroud, take off the sand between cover plate and supporting surface (tiltedly piston plate), for the shell jacking provides the space.The shell jacking, front sand pressure acts on the piston, and during the piston jacking, sand pressure acts on back shroud and is uploaded on the shell.With the method for shell and the jacking of piston difference, finish the jack-in process of a piston-type shield.
It has had the steel plate housing 1 of support action described piston-type shield, housing can be made becomes several cuboids, has the steel plate demarcation strip between two cuboids, there is jack pad assembly 8 the housing inboard, and the jack rear portion withstands on the chock 10, and chock places in the building block 33, two pistons 2 are arranged in each rectangular case, the centre is a big piston 3, and piston is separated by separation frame 4, and tiltedly piston places the front portion.
The separation frame of described piston-type shield is located between the two-piston, and the rear and front end is a stave sheet, and the middle part is the horizontal steel plate of parallel placement, and bonnet grillage 6 and separation frame 4 all are fixed on the upper and lower steel plate by montant.
The piston of described piston-type shield, the both sides of its piston are steel plates 7, the middle part is forward slightly to be the long narrow steel plate 17 of support panel, fixedly connected left and right sides steel plate, want the compartment of terrain to offer support belt import 16 at steel plate support panel place, the left and right sides, with steel cable port 18, support belt is formed by connecting by connector 21 by the multi-disc support chip.
The front portion of the oblique piston of described piston-type shield is a grid 23, and the grid rear portion is oblique piston plate 24, portable plate 25, oblique piston mandril 26, portable plate push rod 27, tiltedly piston bonnet grillage 15.
Logical hole 28 is arranged on the oblique piston plate 24 of the oblique piston of described piston-type shield, portable plate spud pile 29, oblique piston plate fixed gap 30, grid 23, tiltedly piston plate 24 all is fixed on the oblique piston mandril 26, and is installed on the steady pin 14.
Owing to adopted technical scheme as mentioned above, the present invention has following superiority
Piston-type shield advances the driving soil layer by piston, advance shell body to pass forward, sand pressure acts on the piston when the place ahead, during the piston reach, the pressure of sand is applied on the back shroud, reaches again on the shell body, shell body and piston all advance easily like this, it is with respect to closed shield structure, the easier jacking of waterpower shield structure, and energy consumption is little.
Piston-type shield is by the supporting surface of support belt sealing, sound construction, tight-closed, also can make pre-small post-large T shape to the long narrow steel plate of support chip upper and lower and make sealing tighter, tiltedly portable plate under the loam cake of the logical hole of piston plate, under inner sand pressure, seal also tight, safe, good reliability, can not occur gushing sand, gushing the mud phenomenon, the piston-type shield scope of application is wider.
But the each jacking 40-50Cm of piston-type shield, permission does not have sandstone, cobble as geological condition, but every several hrs is with regard to jacking once, but jacking every day 1-2m, progress is very fast.
Because piston-type shield jacking resistance is little, with identical back seat and top power, but in the soil layer that jacking closed shield structure and waterpower shield structure top are not advanced.As long as the soil layer that piston shield structure sword pin can be cut, support belt also can be cut, and just can construct.
The soil layer that shield structure sword pin can not be cut, be mainly the hard soil of sandstone, rock type soil layer sandstone etc., erectile to work plane, desirable lower piston is constructed, can not be upright to work plane, the sword pin is cut the sand and the rock cross-bedding of not going into again, mud and rock cross-bedding, sand stone layer etc. will be considered in conjunction with freezing the method that construction is used the piston-type shield method instead with slip casting with slip casting method to be, freeze earlier, when not having cement or other gelatinous mass, the soil layer that heat fused is freezed is used whole piston-type shield job practicess instead.
Therefore, the piston-type shield applied range, cost is low, and construction safety is reliable, and jacking is easy, and progress is very fast.
Below in conjunction with the description of drawings specific embodiment:
Fig. 1 is a piston-type shield general structure schematic diagram.
Fig. 2 is a piston-type shield shell structure schematic diagram
Fig. 3 is a piston-type shield piston structure schematic diagram
Fig. 4 is a piston-type shield supporting surface front view
Fig. 5 is a piston-type shield supporting surface left view
Fig. 6 is a piston-type shield support belt structural representation
Fig. 7 is the oblique piston general structure of a piston-type shield schematic diagram
Fig. 8 is the oblique piston plate structural representation of piston-type shield
As shown in FIG.: shell body is fixedly connected by steel plate welding or other method.Under the sand pressure of the outside, only allow a small amount of distortion, guarantee that piston structure moves freely for easy construction, piston portion is good with rectangle, so according to the tunnel shape, shield structure shell section can be made rectangle or middle high, the shapes such as stairstepping that both sides are low.In the middle of upper and lower two rectangles, also to there be steel plate to separate.
On the wall, more affixed jack pad assemblies 8 in the enclosure, be used for supporting jack pad assembly 1, behind bonnet grillage 6, distribute, separate on the steel plate at upper and lower rectangle and do not establish around one week of shell.
Bonnet grillage 6 is at piston supporting surface rear portion, the distance that bonnet grillage and separation frame are 4 for piston about the thickness of two block plates 7 bigger, guarantee that steel plate can move and outwards not a large amount of loss sand, the back shroud frame material also is steel, cover plate can be installed in the above, after cover plate is installed, do not stay big slit, block sand and shove.
Also for the steel rear and front end is perpendicular steel, the horizontal steel of upper and lower parallel distribution is instructed in the centre to separation frame between two pistons, and the rear and front end distance is 1.5-2 a times of the each displacement of piston.Horizontal steel can not influence the dismounting of support belt, promptly wants the place of dismounting support belt that horizontal steel is not installed.Because install about the interval when piston is installed support belt, therefore, two horizontal steel positions are different about separation frame.Bonnet grillage and separation frame all are fixed on the upper and lower steel plate by montant, and some horizontal steel are fixed on the inwall respectively to the left and right in separation frame front portion, the left and right sides, as oblique piston bonnet grillage 15, act on the same with the bonnet grillage.
Trend is outstanding before and after the upper and lower two-layered steel plates of rectangular enclosure will have two near place, two ends, the left and right sides, before the position is close, is used for fixing oblique piston, make oblique piston fix 14, tiltedly piston breach 30 covers on top guarantee that oblique piston advances by track, and move left and right does not take place.
The steel plate of the cutting soil layer of shell front portion all will be made blade-like, reduces propelling resistance.
3 pistons are installed in each rectangle, two oblique pistons of the right and left, the oblique wide 60-70cm of piston, middle bigger piston, three pistons are separated by separation frame, and tiltedly piston is preceding, for big piston dismounting support belt provides the space.The right and left is a steel plate 7, its effect is to block quicksand and mud, forward slightly of centre is a supporting surface 5, there is fixed bar 9 back, long narrow steel plate 17 by fixed bar and supporting surface is fixed up left and right sides steel plate, wants the compartment of terrain to offer support belt import 16 and steel cable port 18 at steel plate supporting surface place, the left and right sides, and is to offer support belt import and steel cable port on the steel plate of the left and right sides respectively, to cooperate with the horizontal steel of separation frame, promptly have the place of support belt import can not be provided with horizontal steel.Behind the supporting surface of the steel plate outside, establish jack pad assembly 8, length is that 3 times of supporting surfaces 5 of each displacement are made up of long narrow steel plate before and after the piston, upper and lower each one, each the two long narrow steel plates 17 in front and back, the rear portion steel plate is wideer slightly than the front portion, is used for bearing sand pressure and forms a long and narrow support chamber, and the support belt import is the support chamber section configuration, support belt import 16, support belt can move in support chamber.
Support belt is formed by connecting by numerous support chips 20, each support chip length is all the same, it is exactly the width of support belt, blade edges place depression and breach, can be in these depressions and indentation, there, connect with connector, it is of uniform thickness everywhere to connect the back, make it from the support belt import by the time do not have a big space, blade-like is made at the upper and lower two of support chip, and frictional force when being used for reducing support belt and moving connects wire rope on first support chip, from wire rope port 18 tractive wire rope, support belt is moved and seal this support chamber.When a tractive support belt, to connect and the installation support chip with connector in the other end.Can fill up support chip to whole supporting surface with this way, the sand separated into two parts.
Certainly, support chip can not established depression yet and is only established breach at the edge, but will guarantee that support belt section and support belt entry shape are consistent always.
Since jagged on the support chip, can pull down whole support belt by the outside tractive of breach.
Tiltedly piston 24 forefronts are grids, block sandstone and do not enter the rear portion, because be oblique, when oblique piston advanced, sandstone can enter in the big piston space in middle part.After having only sand to enter grid, grid will be done widelyer, guarantees that middle part piston 3 does not have sandstone to be clipped between left and right sides steel plate and the oblique piston when moving, make bad sealing.Therefore grid will go deep into middle part piston space 10-20Cm, is on the oblique piston plate 24 oblique piston plates logical hole 28 to be arranged behind the grid, is used for by sand, around each logical hole 4 circular portable plate spud piles 29 is arranged, and these spud piles are not perpendicular to oblique piston plate.But towards the dead ahead.Circular hole 31 is arranged on the portable plate 25, can be enclosed within on these spud piles, then in spud pile forefront weldering more greatly, portable plate is moved before and after can be in stake does not break away from spud pile again.Open several breach 30 in the oblique upper and lower edge of piston plate, these breach are enclosed within the oblique piston of shell and fix on 14, and fixing oblique piston reach track when making its reach left avertence does not take place and moves.Grid 23, tiltedly piston plate 24 all is fixed on oblique piston mandril 26, is installed in oblique piston and fixes on 14, promotion by oblique piston mandril is advanced, portable plate push rod 27 front portions are fixed on the portable plate, push away before the push rod, and portable plate is to reach, along the portable plate spud pile, open in logical hole, and push rod post-tensioning, portable plate can cover logical hole completely again, because grid is equipped with in the front portion, the inside does not have gravel.Pressure is big before portable plate, and the rear portion sand is few, pressure hour, and portable plate also can cover logical hole completely automatically.When opened in logical hole, tiltedly piston plate can move forward under the power effect of top, and logical hole can be blocked the inside sand and outwards not shove when covering completely.For reducing propelling resistance, portable plate can be done narrowlyer.As long as it is just passable to block logical hole.
Grid, tiltedly piston plate is the same, all stretches out a part between intermediate piston, and the sand incident of shoving does not mutually take place between intermediate piston.Can put between intermediate piston at oblique piston plate and fix a slat gum band, reach sealing purpose with steel plate contact position, the left and right sides.Tiltedly piston touches wall near inwall one forequarter steel plate, and wall is not touched at the rear portion.Be that oblique piston is made blade-like on one side, can alleviate preventing of oblique piston propelling resistance and break-in.
Will weld some wickets with hinge on back shroud, hinge is on door top, and wicket can be opened and can close like this.When top wicket plate bottom outside in, can back down wicket as not pushing up, wicket can controlledly be emitted the sand before the bonnet grillage on stifled automatically under gravity and the effect of inner sand pressure.
On back shroud, also to open some duck eyes, stifled at ordinary times on, when withstanding on cobble as special circumstances such as support belt when mobile, available feeler lever backs down cobble by duck eye.Feeler lever is some iron staffs.Tiltedly attach some cover plates on the piston bonnet grillage, tiltedly piston mandril 26 and portable plate push rod 27 pass through from the cover plate hole, and push rod can be moved forward and backward.Other cover plate is the same with bonnet grillage upper cover plate.
Below the requirement of the various device of Jie Shaoing is a good rigidly, and indeformable, intensity is big, can support enough pressure.。
A progradation is:
Cover piston and oblique piston back shroud, and all be supported in the building block piston and oblique piston, jacking shell 1 advances, building block 33 is installed, push up oblique piston mandril 26 then simultaneously with jack 9 top portable plate push rods 27, after tiltedly piston 2 advances, emit some sands of 15 of oblique piston and oblique piston bonnet grillages, make oblique piston be closed, take off support belt from the workplace both sides again, piston 3 is opens shape jacking piston-advance, making piston left and right sides steel plate 7 withstand on oblique piston plate puts on the rubber strip on one side between intermediate piston, support chip is installed respectively in the right and left workplace again and is drawn wire rope with the jack top, the traction support belt allows support belt fill up supporting surface 5 between whole intermediate piston, take off the back shroud of piston and oblique piston, take out the sand of supporting surface and oblique piston plate back, cover back shroud again, finish next progradation.
Claims (6)
1, a kind of job practices with piston-type shield driving pipeline, it is characterized in that: the job practices of described piston type matter structure driving pipeline, left and right two oblique piston drivings are preceding in each rectangle of piston-type shield housing, for piston dismounting support belt broad in the middle provides the space, when the oblique piston portable plate of jacking push rod, oblique piston is opens shape, and when the oblique piston mandril of jacking, tiltedly piston is closed; The support belt of middle big piston is dismantled and assembled under the traction of steel cable, intermediate piston is opens and closed, when piston and tiltedly piston be when opening shape, piston and tiltedly piston can jacking, when both are closed, piston back shroud and oblique piston back shroud be can take off, tiltedly piston and the tiltedly sand between piston plate, jacking shell then between piston and support belt taken out; A progradation is: cover piston and oblique piston back shroud, and piston and oblique piston all are supported in the building block (33), jacking shell 1 advances, and building block (33) is installed; With jack (9) top portable plate push rod (27), push up oblique piston mandril (26) then simultaneously, after tiltedly piston (2) advances, emit some sands between oblique piston and oblique piston bonnet grillage (15), make oblique piston be closed, take off support belt from the workplace both sides again, live cold (3) are open shape, the jacking piston-advance, making piston left and right sides steel plate (7) withstand on oblique piston plate puts on the rubber strip on one side between intermediate piston, support chip is installed respectively in the right and left workplace again and is drawn wire rope with jack (9) top portable plate push rod (27) top, the traction support belt allows support belt fill up supporting surface (5) between whole intermediate piston; Take off the back shroud of piston and oblique piston, take out the sand of supporting surface and oblique piston plate back, cover back shroud again, finish next progradation again.
2, a kind of enforcement piston-type shield structure of method according to claim 1, it is characterized in that: described piston-type shield structure, steel plate housing (1) with support action, the supporting housing can be made becomes several cuboids, has the steel plate demarcation strip between two cuboids, there is jack pad assembly (8) the housing inboard, jack (9), the jack rear portion withstands on the chock (10), chock places in the building block (33), and two oblique pistons (2) are arranged in each rectangular case, and the centre is a big piston (3), piston is separated by separation frame (4), and tiltedly piston places the front portion.
3, piston-type shield structure as claimed in claim 2, it is characterized in that: the separation frame of described piston-type shield (4) is located between two pistons, the rear and front end is a stave sheet, the middle part is the horizontal steel plate of parallel placement, and bonnet grillage (6) and separation frame all are fixed on the upper and lower steel plate by montant.
4, piston-type shield structure as claimed in claim 2, it is characterized in that: the piston of described piston-type shield structure, the both sides of its piston are steel plate (7), the middle part is forward slightly to be support panel (5), there is fixed bar (19) back, long narrow steel plate (17) by fixed bar and support panel is fixedlyed connected left and right sides steel plate, at left and right steel plate support panel place, offer support belt import (16) and wire rope port (18) at interval, support belt is formed by connecting by connector (21) by the multi-disc support chip.
5, piston-type shield structure as claimed in claim 2 is characterized in that: the oblique piston of described piston-type shield, its front portion are grid (23), the grid rear portion is oblique piston plate (24), portable plate (25), tiltedly piston mandril (26), portable plate push rod (27), tiltedly piston bonnet grillage (15).
6, piston-type shield as claimed in claim 5, it is characterized in that: on the oblique piston plate (24) of the oblique piston of described piston-type shield logical hole (28) is arranged, portable plate spud pile (29), oblique piston plate fixed gap (30), grid (23), tiltedly piston mandril (26) is installed on the oblique piston steady pin (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98104630A CN1090708C (en) | 1998-01-09 | 1998-01-09 | Piston-type shield and pipeline construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98104630A CN1090708C (en) | 1998-01-09 | 1998-01-09 | Piston-type shield and pipeline construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1187576A CN1187576A (en) | 1998-07-15 |
| CN1090708C true CN1090708C (en) | 2002-09-11 |
Family
ID=5218345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98104630A Expired - Fee Related CN1090708C (en) | 1998-01-09 | 1998-01-09 | Piston-type shield and pipeline construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1090708C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100781357B1 (en) * | 2006-06-22 | 2007-11-30 | 주식회사 엔티에스이앤씨 | It establishes the tunnel formation tunnel structure the maine pipe construction method |
| CN104846829B (en) * | 2014-02-18 | 2017-05-10 | 宏润建设集团股份有限公司 | Shield-reserved penetration composite type foundation pit support wall and construction method thereof |
| CN104675403B (en) * | 2014-12-18 | 2017-07-21 | 上海建工集团股份有限公司 | A kind of underground space construction method and supporting construction |
| CN108222535A (en) * | 2017-12-29 | 2018-06-29 | 上海建工集团股份有限公司 | An a kind of column construction method and mechanism of pile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436448A (en) * | 1979-12-29 | 1984-03-13 | Hochtief Ag, Vorm. Gebr. Helfmann | Excavating machine for tunnels and galleries |
| CN1012920B (en) * | 1984-10-19 | 1991-06-19 | 艾尔费拉瓦尔海洋电力工程公司 | Flow indicating device and method for changing its measuring range |
| CN1108349A (en) * | 1994-03-07 | 1995-09-13 | 藤田株式会社 | Suporting structure |
| CN2236544Y (en) * | 1995-08-25 | 1996-10-02 | 北京市地下铁道建设公司 | Inserting shield structure |
-
1998
- 1998-01-09 CN CN98104630A patent/CN1090708C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436448A (en) * | 1979-12-29 | 1984-03-13 | Hochtief Ag, Vorm. Gebr. Helfmann | Excavating machine for tunnels and galleries |
| CN1012920B (en) * | 1984-10-19 | 1991-06-19 | 艾尔费拉瓦尔海洋电力工程公司 | Flow indicating device and method for changing its measuring range |
| CN1108349A (en) * | 1994-03-07 | 1995-09-13 | 藤田株式会社 | Suporting structure |
| CN2236544Y (en) * | 1995-08-25 | 1996-10-02 | 北京市地下铁道建设公司 | Inserting shield structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1187576A (en) | 1998-07-15 |
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