CN206592136U - A kind of plain wall closing water sealing consolidation structure of shield launching - Google Patents

A kind of plain wall closing water sealing consolidation structure of shield launching Download PDF

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Publication number
CN206592136U
CN206592136U CN201720270685.0U CN201720270685U CN206592136U CN 206592136 U CN206592136 U CN 206592136U CN 201720270685 U CN201720270685 U CN 201720270685U CN 206592136 U CN206592136 U CN 206592136U
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China
Prior art keywords
plain
diaphram
shield
water sealing
outside
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CN201720270685.0U
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Inventor
陈健
王承震
李占先
王德福
商跃锋
李义翔
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China Railway 14th Bureau Group Shield Engineering Co Ltd
China Railway 14th Bureau Group Co Ltd
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China Railway 14th Bureau Group Co Ltd
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Abstract

The utility model discloses a kind of plain wall closing water sealing consolidation structure of shield launching.The water sealing consolidation structure is by C15 plain concretes diaphram wall (including built-in slip casting pipe), 2 row's rotary churning piles, three axes agitating pile and many mouthfuls of precipitation well constructions, rotary churning pile specification is the@500 of Φ 800, three axes agitating pile specification is the@600 of Φ 850, matrix is set to enter the plain diaphram walls of rock C15 in stabilization zone periphery, the water stop curtain structure all around closed with the formation of station diaphram wall, to reduce settlement influence scope of the precipitation to the outer soil body in hole in hole, it is ensured that effective water proof effect.Outside built-in slip casting pipe in plain concrete diaphram wall seam crossing, to carry out slip casting leak-stopping operation to there is the seam of seepage.

Description

A kind of plain wall closing water sealing consolidation structure of shield launching
Technical field
The utility model is related to a kind of plain wall closing water sealing consolidation structure of shield launching, more particularly to major diameter mud Water balance shield launching closes water sealing consolidation structure with the plain wall of end well.
Background technology
Shield Construction Technique is widely used in the building of soil layer or weak surrounding rock stratum urban subway tunnel, and is a kind of non- Normal reliable tunnel construction technology.Shield launching technology is very the key link, shield in shield method tunnel construction technical system Structure originates the whether smooth safety for being directly connected to tunnel construction in later period quality, duration and work progress.
To ensure to need before the stabilization of launching shaft, shield launching to reinforce starting well termination, while needs pair The stabilization zone soil body carries out certain processing.Conventional shield launching technology working procedure is complicated, and security performance is relatively low, it is careless slightly just May occur Sand problem, jeopardize shield launching safety.
Immediate prior art is as follows:
1. Application No. 201010123683.1 shield receive or starting end head twin-well formula reinforcement means and twin-well formula The Patents of shield method of reseptance.The technology is to use to be pre-formed " [" outside twin-well formula reinforcement means, enclosure wall AT STATION Shape groove, cast plain concrete formation diaphram wall is the plain wall of outsourcing in groove, outsourcing element wall and safeguards that wall is connected to form advanced well, Impermeable stratum under the bottom insertion tunnel of advanced well, top is higher than highest level of ground water, water extraction front outside advanced well.Shield When originating, shield machine is introduced into advanced well, then excavates further along.The technical method can effectively solve underground water to shield launching The danger brought, but the impermeable stratum buried depth under shield tunnel it is larger when, set that advanced well is relatively difficult, this method is no longer It is applicable.It is higher with this method construction cost in addition, it is uneconomical.
2. Patents of the shallow earthing originating method of the shield tunnel of Application No. 201210300855.7.The utility model A kind of shallow earthing originating method of shield tunnel is disclosed, by using earthing back-pressure, local tunneling boring stratum consolidation and gate-type Layer reinforces the method being combined and the shield launching section soil body is reinforced, in order to prevent face after portal is opened during shield launching Damage of soil body and stratum occur to loosen etc., cause the mud spillage in muddy water storehouse, stratum unstability, water burst to gush mud etc., using freezing Method reinforces the place certain thickness stratum that punches.The utility model solves the stable problem that section stratum is originated under the conditions of shallow earthing, together When reduce and originate active well and open excavation section deep foundation pit construction risk., it is necessary to close to outside starting well portal in the utility model The soil body in the range of 1~2m of side uses freezing consolidation, but construction freezing method cycle length, cost are high, and with certain wind Danger.
Therefore a kind of plain wall closing water sealing consolidation process of new shield launching is needed, is occurred in the prior art to improve The problem of.
Utility model content
The utility model provides one kind aiming at above-mentioned defect and can effectively reinforce starting well termination, prevent The plain wall closing water sealing consolidation structure of shield launching of Sand problem occurs for the stabilization zone soil body.The water sealing consolidation system is by C15 Plain concrete diaphram wall (including built-in slip casting pipe), 2 row's rotary churning piles, three axes agitating pile and many mouthfuls of precipitation well constructions, churning Stake specification is the@500 of Φ 800, and three axes agitating pile specification is the@600 of Φ 850, sets matrix to enter the plain undergrounds of rock C15 in stabilization zone periphery Diaphragm wall, the water stop curtain structure all around closed with the formation of station diaphram wall, to reduce the interior precipitation in hole to cheating the outer soil body Settlement influence scope, it is ensured that effective water proof effect.Outside built-in slip casting pipe in plain concrete diaphram wall seam crossing, so as to Slip casting leak-stopping operation is carried out to there is the seam of seepage.
The plain wall closing water sealing consolidation structure technology scheme of a kind of shield launching of the present utility model is that the structure includes setting Mixing pile in launching shaft termination is used to soil mass consolidation;Three face plain concrete undergrounds are set to connect in cement mixing method area periphery Continuous wall formation " recessed " type enters rock plain concrete diaphram wall, the sealing curtain all around closed with the formation of station building enclosure enclosure wall Curtain structure, to reduce settlement influence scope of the precipitation to the outer soil body in hole in hole, it is ensured that effective water proof effect, plain concrete underground Outside built-in slip casting pipe in diaphragm wall seam crossing, to carry out slip casting leak-stopping operation to there is the seam of seepage;Plain concrete It is lower to be closed between diaphragm wall and mixing pile using 2 row's rotary churning piles;It is being additionally provided with outside shield tunnel diameter within stabilization zone flatly Above dewatering well.
Mixing pile uses the three axes agitating piles of 850@of Φ 600.
Cement mixing method width is that on the outside of shield tunnel scope and tunnel structure each 3 meters on the outside of left and right, vertical reality stake adds Gu scope is 5m above and below shield tunnel construction.
Plain concrete diaphram wall enters rock not less than 1m.
Rotary churning pile specification is the@500 of Φ 800.
The plain concrete diaphram wall is 800mm thickness C15 plain concrete diaphram walls.
2-4 mouthfuls of dewatering wells are set outside plain concrete diaphram wall.Using stabilization zone dewatering well to stabilization zone before originating The soil body carries out precipitation, it is ensured that 2m under underground water potential drop to tunnel structure.
Plain concrete diaphram wall and station building enclosure enclosure wall junction are provided with plain concrete underground continuous Wall outer side seam sealing rotary churning pile.
It is safe during to ensure that portal is abolished, set the plain underground of one of concrete continuous on the outside of building enclosure enclosure wall AT STATION Wall, depth is 5m below shield tunnel construction, is sealed with peripheral " recessed " the type plain concrete diaphram wall formation in cement mixing method area " mouth " the type structure closed.
A kind of plain wall closing water sealing consolidation structure construction technique of described shield launching, comprises the following steps:
(1) 800mm thickness C15 " recessed " type is set with entering rock plain concrete outside the station building enclosure of launching shaft termination Lower diaphragm wall, plain concrete diaphram wall enters rock not less than 1m, with stopping that building enclosure enclosure wall formation in station is all around closed It is stabilization zone in water curtain structure, the water stop curtain structure all around closed;Inside and outside plain concrete diaphram wall seam crossing Side built-in slip casting pipe;
(2) set plain concrete underground continuous with station building enclosure enclosure wall junction in plain concrete diaphram wall Wall outer side seam sealing rotary churning pile;
(3) the three axes agitating pile soil mass consolidations of 850@of Φ 600 are used in stabilization zone, cement mixing method width is shield tunnel 3m on the outside of structure, vertical reality stake reinforcing scope is 5m above and below shield tunnel construction;
(4) closed between plain concrete diaphram wall and mixing pile using the rotary churning piles of 2 row Φ, 800@500;
(5) a bite above dewatering well is being additionally provided with outside shield tunnel diameter within stabilization zone;Precipitation is utilized before originating Well carries out precipitation to the stabilization zone soil body, it is ensured that 2m under underground water potential drop to tunnel structure.
In addition, in (1) step, the safety assurance soil mass consolidation during being abolished for portal does not cave in, and is applied before portal One of 800mm thickness C15 plain concrete diaphram wall is done, plain wall depth is to 5 meters below tunnel bottom.
The beneficial effects of the utility model are:This structure is effectively reinforced and enclosed in the certain limit of shield launching termination The soil body, it is ensured that the stability of the region soil body, separated the threat that underground water is brought to shield launching, thoroughly avoided powder In fine sand stratum during shield launching Sand dangerous situation generation, smoothly originating for sound assurance shield, is engineering construction Have laid a good foundation.In addition, the structure and construction technology need not set advanced well, need not when starting well termination is reinforced Consider the buried depth of underground impermeable stratum, this shield launching element wall closing water sealing consolidation structure can effectively strengthening stratum and barrier ground Lower water, fast, economical effectively, typically can also evade completely portal abolish, the construction risk of shield launching.
Brief description of the drawings:
Fig. 1 show the utility model structural plan layout drawing;
Fig. 2 show the utility model structural facades schematic diagram;
Fig. 3 show plain concrete diaphram wall built-in slip casting pipe distribution schematic diagram in the utility model structure;
Fig. 4 show the utility model main structure body structure overlap joint schematic diagram.
In figure:1- plain concrete diaphram walls;2- rotary churning piles;3- mixing piles;4- dewatering wells;5- Grouting Pipes;6- elements are mixed Solidifying soil diaphram wall outer side seam sealing rotary churning pile.
Embodiment:
In order to more fully understand the utility model, technical side of the present utility model is described in detail with instantiation below Case, but the utility model is not limited thereto.
Embodiment 1
A kind of plain wall closing water sealing consolidation structure of shield launching, the structure includes being arranged at the stirring of launching shaft termination Stake 3 is used to soil mass consolidation;Set " recessed " type to enter rock plain concrete diaphram wall 1 in the stabilization zone of mixing pile 3 periphery, enclosed with station The water stop curtain structure that the formation of protection structure enclosure wall is all around closed, to reduce settlement influence model of the precipitation to the outer soil body in hole in hole Enclose, it is ensured that outside built-in slip casting pipe 5 in effective water proof effect, the seam crossing of plain concrete diaphram wall 1, to be oozed to existing The seam of leakage carries out slip casting leak-stopping operation;Closed between plain concrete diaphram wall 1 and mixing pile 3 using 2 row's rotary churning piles 2; A bite above dewatering well 4 is additionally provided with outside shield tunnel diameter within stabilization zone.
Mixing pile 3 is using the three axes agitating piles of 850@of Φ 600.
It is that on the outside of shield tunnel scope and tunnel structure each 3 meters on the outside of left and right, vertical reality stake adds that mixing pile 3, which reinforces width, Gu scope is 5m above and below shield tunnel construction.
Plain concrete diaphram wall 1 enters rock not less than 1m.
The specification of rotary churning pile 2 is the@500 of Φ 800.
The plain concrete diaphram wall 1 is 800mm thickness C15 plain concrete diaphram walls.
Plain concrete diaphram wall 1 and station building enclosure enclosure wall junction are provided with plain concrete underground continuous The outside rotary churning pile 2 of wall 1.
A kind of plain wall closing water sealing consolidation structure construction technique of described shield launching, comprises the following steps:
(1) 800mm thickness C15 " recessed " type is set with entering rock plain concrete outside the station building enclosure of launching shaft termination Lower diaphragm wall 1, plain concrete diaphram wall 1 enters rock not less than 1m, is all around closed with the formation of station building enclosure enclosure wall It is stabilization zone in water stop curtain structure, the water stop curtain structure all around closed;In the seam crossing of plain concrete diaphram wall 1 Outside built-in slip casting pipe 5;
(2) plain concrete underground is set to connect in plain concrete diaphram wall 1 and station building enclosure enclosure wall junction Continuous wall outer side seam sealing rotary churning pile 6;
(3) soil mass consolidation of 850@of Φ, 600 three axes agitating piles 3 is used in stabilization zone, it is shield tunnel that mixing pile 3, which reinforces width, 3m on the outside of road structure, vertical reality stake reinforcing scope is 5m above and below shield tunnel construction;
(4) closed between plain concrete diaphram wall 1 and mixing pile 3 using the rotary churning piles 2 of 2 row Φ, 800@500;
(5) a bite above dewatering well 4 is being additionally provided with outside shield tunnel diameter within stabilization zone;Precipitation is utilized before originating Well 4 carries out precipitation to the stabilization zone soil body, it is ensured that 2m under underground water potential drop to tunnel structure.
Embodiment 2
A kind of plain wall closing water sealing consolidation structure of shield launching, the structure includes being arranged at the stirring of launching shaft termination Stake 3 is used to soil mass consolidation;Set " recessed " type to enter rock plain concrete diaphram wall 1 in the stabilization zone of mixing pile 3 periphery, enclosed with station The water stop curtain structure that the formation of protection structure enclosure wall is all around closed, to reduce settlement influence model of the precipitation to the outer soil body in hole in hole Enclose, it is ensured that effective water proof effect, it is safe during to ensure that portal is abolished, set mixed together on the outside of building enclosure enclosure wall AT STATION The solidifying plain diaphram wall 1 of soil, depth is 5m below shield tunnel construction, with peripheral " recessed " the type plain concrete in the stabilization zone of mixing pile 3 " mouth " type structure of the formation closing of diaphram wall 1.Outside built-in slip casting pipe 5 in the seam crossing of plain concrete diaphram wall 1, with Just slip casting leak-stopping operation is carried out to there is the seam of seepage;2 row's churnings are used between plain concrete diaphram wall 1 and mixing pile 3 Stake 2 is closed;A bite above dewatering well 4 is being additionally provided with outside shield tunnel diameter within stabilization zone.
Mixing pile 3 is using the three axes agitating piles of 850@of Φ 600.
It is that on the outside of shield tunnel scope and tunnel structure each 3 meters on the outside of left and right, vertical reality stake adds that mixing pile 3, which reinforces width, Gu scope is 5m above and below shield tunnel construction.
Plain concrete diaphram wall 1 enters rock not less than 1m.
The specification of rotary churning pile 2 is the@500 of Φ 800.
The plain concrete diaphram wall 1 is 800mm thickness C15 plain concrete diaphram walls.
In the 2-4 mouthfuls of dewatering wells 4 of outer setting of plain concrete diaphram wall 1.Dewatering well 4 pairs of reinforcings in stabilization zone are utilized before originating Area's soil body carries out precipitation, it is ensured that 2m under underground water potential drop to tunnel structure.
Plain concrete diaphram wall 1 and station building enclosure enclosure wall junction are provided with plain concrete underground continuous The outside rotary churning pile 2 of wall 1.
A kind of plain wall closing water sealing consolidation structure construction technique of described shield launching, comprises the following steps:
(1) 800mm thickness C15 " recessed " type is set with entering rock plain concrete outside the station building enclosure of launching shaft termination Lower diaphragm wall 1, plain concrete diaphram wall 1 enters rock not less than 1m, is all around closed with the formation of station building enclosure enclosure wall It is stabilization zone in water stop curtain structure, the water stop curtain structure all around closed, is set AT STATION on the outside of building enclosure enclosure wall The plain diaphram wall 1 of one of concrete is put, depth is 5m below shield tunnel construction, with peripheral " recessed " type in the stabilization zone of mixing pile 3 " mouth " type structure of the formation closing of plain concrete diaphram wall 1;The pre-buried note in outside in the seam crossing of plain concrete diaphram wall 1 Starch pipe 5;
(2) plain concrete underground is set to connect in plain concrete diaphram wall 1 and station building enclosure enclosure wall junction Continuous wall outer side seam sealing rotary churning pile 6;
(3) soil mass consolidation of 850@of Φ, 600 three axes agitating piles 3 is used in stabilization zone, it is shield tunnel that mixing pile 3, which reinforces width, 3m on the outside of road structure, vertical reality stake reinforcing scope is 5m above and below shield tunnel construction;
(4) closed between plain concrete diaphram wall 1 and mixing pile 3 using the rotary churning piles 2 of 2 row Φ, 800@500;
(5) a bite above dewatering well 4 is being additionally provided with outside shield tunnel diameter within stabilization zone;Precipitation is utilized before originating Well 4 carries out precipitation to the stabilization zone soil body, it is ensured that 2m under underground water potential drop to tunnel structure.
(6) in the 2-4 mouthfuls of dewatering wells 4 of outer setting of plain concrete diaphram wall 1.

Claims (9)

1. the plain wall closing water sealing consolidation structure of a kind of shield launching, it is characterised in that the structure includes being arranged at launching shaft The mixing pile (3) of termination;Three face plain concrete diaphram walls (1) formation " recessed " type is set in mixing pile (3) stabilization zone periphery Enter rock plain concrete diaphram wall (1), the water stop curtain structure all around closed with the formation of station building enclosure enclosure wall, element is mixed Outside built-in slip casting pipe (5) in solidifying soil diaphram wall (1) seam crossing;Between plain concrete diaphram wall (1) and mixing pile (3) Closed using 2 row's rotary churning piles (2);A bite above dewatering well (4) is being additionally provided with outside shield tunnel diameter within stabilization zone.
2. a kind of plain wall closing water sealing consolidation structure of shield launching according to claim 1, it is characterised in that mixing pile (3) using the three axes agitating piles (3) of 850@of Φ 600.
3. a kind of plain wall closing water sealing consolidation structure of shield launching according to claim 1, it is characterised in that mixing pile (3) it is that on the outside of shield tunnel scope and tunnel structure each 3 meters on the outside of left and right, vertical reality stake reinforcing scope is shield to reinforce width 5m above and below tunnel structure.
4. a kind of plain wall closing water sealing consolidation structure of shield launching according to claim 1, it is characterised in that plain concrete Diaphram wall (1) enters rock not less than 1m.
5. a kind of plain wall closing water sealing consolidation structure of shield launching according to claim 1, it is characterised in that rotary churning pile (2) specification is the@500 of Φ 800.
6. the plain wall closing water sealing consolidation structure of a kind of shield launching according to claim 1, it is characterised in that the element is mixed Solidifying soil diaphram wall (1) is 800mm thickness C15 plain concretes diaphram walls (1).
7. the plain wall closing water sealing consolidation structure of a kind of shield launching according to claim 1, it is characterised in that in plain coagulation Native diaphram wall (1) sets 2-4 mouthfuls of dewatering wells (4) outside.
8. the plain wall closing water sealing consolidation structure of a kind of shield launching according to claim 1, it is characterised in that in plain coagulation Native diaphram wall (1) is provided with plain concrete diaphram wall (1) outer side seam with station building enclosure enclosure wall junction Sealing rotary churning pile (2).
9. the plain wall closing water sealing consolidation structure of a kind of shield launching according to claim 1, it is characterised in that enclose AT STATION One of concrete plain diaphram wall (1) is set on the outside of protection structure enclosure wall, and depth is 5m below shield tunnel construction, with stirring Peripheral " recessed " the type plain concrete diaphram wall (1) in stake (3) stabilization zone forms " mouth " type structure of closing.
CN201720270685.0U 2017-03-20 2017-03-20 A kind of plain wall closing water sealing consolidation structure of shield launching Active CN206592136U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812540A (en) * 2017-03-20 2017-06-09 中铁十四局集团有限公司 A kind of shield launching element wall closing water sealing consolidation structure and construction technology
CN110735642A (en) * 2019-09-26 2020-01-31 中建市政工程有限公司 shield originating end combined type reinforcing structure and construction method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812540A (en) * 2017-03-20 2017-06-09 中铁十四局集团有限公司 A kind of shield launching element wall closing water sealing consolidation structure and construction technology
CN110735642A (en) * 2019-09-26 2020-01-31 中建市政工程有限公司 shield originating end combined type reinforcing structure and construction method thereof
CN110735642B (en) * 2019-09-26 2021-02-26 中建市政工程有限公司 Shield starting end head combined type reinforcing structure and construction method thereof

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GR01 Patent grant
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TR01 Transfer of patent right

Effective date of registration: 20180413

Address after: Lixia District, Shandong city of Ji'nan province 250101 Olympic road No. 2666, building A, railway construction

Co-patentee after: China Railway fourteen bureau group big Shield Construction Engineering Co., Ltd.

Patentee after: China Railway Shisiju Group Corporation

Address before: No. 2666, Austrian Road, Lishi District, Ji'nan, Shandong, Shandong

Patentee before: China Railway Shisiju Group Corporation