CN104389608B - The construction method of shield crossing ventilating shaft - Google Patents

The construction method of shield crossing ventilating shaft Download PDF

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Publication number
CN104389608B
CN104389608B CN201410522573.0A CN201410522573A CN104389608B CN 104389608 B CN104389608 B CN 104389608B CN 201410522573 A CN201410522573 A CN 201410522573A CN 104389608 B CN104389608 B CN 104389608B
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CN
China
Prior art keywords
shield
ventilating shaft
construction
area
shield crossing
Prior art date
Application number
CN201410522573.0A
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Chinese (zh)
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CN104389608A (en
Inventor
姚占虎
陈云峰
梁玉强
张真
夏鹏举
Original Assignee
中交隧道工程局有限公司
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Application filed by 中交隧道工程局有限公司 filed Critical 中交隧道工程局有限公司
Priority to CN201410522573.0A priority Critical patent/CN104389608B/en
Publication of CN104389608A publication Critical patent/CN104389608A/en
Application granted granted Critical
Publication of CN104389608B publication Critical patent/CN104389608B/en

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Classifications

    • 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
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • 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
    • E21D5/00Lining shafts; Linings therefor
    • E21D5/04Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials

Abstract

<b> the invention discloses the construction method of shield crossing ventilating shaft, the sequence of construction that shield crossing carries out the main structure construction of wind tower again will be first carried out in prior art, the portion body structure being adjusted to wind tower of first constructing carries out shield crossing again, the construction of wind tower would not be subject to the impact of shield-tunneling construction progress, can effective reduction of erection time, ensure the carrying out smoothly of construction in later period, and structurally also very firm, safety.</b>

Description

The construction method of shield crossing ventilating shaft

Technical field

the present invention relates to the construction method of shield crossing ventilating shaft, belong to underground engineering field.

Background technology

along with China's economic construction development, for meeting Urban traffic demand, a large amount of river passage, seabed tunnel are excessively built in succession, shield construction because of excavate safe driving speed fast, advance, be unearthed, the overall process such as assembled lining cutting can realize automated job, construction labour intensity is low, do not affect the feature that traffic above-ground and facility do not affect the facilities such as underground utilities simultaneously, more and more adopted by big cross section long distance tunnel project.

in construction, because shield machine is after driving constructing tunnel to certain engineering quantity, tool wear needs examine and replace, ventilating shaft, Feng Ta need be set for meeting the demand such as ventilation and maintenance in rear tunnel of running simultaneously, ventilating shaft is positioned at underground, how rounded cross section is, is made up of several diaphragm walls (abbreviation ground-connecting-wall).Wind tower is constructed from the top of ventilating shaft, communicates and elevate above the soil with ventilating shaft.

when shield machine passes through ventilating shaft, sequence of construction of the prior art, for first carrying out shield crossing carries out the main structure construction of wind tower again, Planning of construction periods and guarantee construction quality is all unfavorable for shield crossing ventilating shaft.

Summary of the invention

for solving the problem, the object of the present invention is to provide the construction method of shield crossing ventilating shaft, can effective reduction of erection time and ensure carrying out smoothly of construction in later period.

in order to reach above object, the technical solution used in the present invention is: the construction method of shield crossing ventilating shaft, and it comprises the following steps:

a. the bottommost of wind tower agent structure is structure base slab, structure base slab comprises the base plate ring beam be connected with ventilating shaft inwall and the floor body be connected with base plate ring beam, after base plate ring beam reaches designing requirement intensity, remove the C20 underwater concrete upper surface of having built in backfill to ventilating shaft in ventilating shaft, after removing, ventilating shaft inwall and C20 underwater concrete upper surface are cleared up, carry out C20 plain concrete to the first area formwork erection in shield crossing region afterwards to build and maintenance, shield crossing region is defined as: in the height direction one section of region of ventilating shaft, be positioned at below structure base slab, the soffit in shield crossing region is in the below of C20 underwater concrete upper surface, first area is defined as: its soffit is close to C20 underwater concrete upper surface, upper surface is close to the upper surface in shield crossing region, external surface is close to ventilating shaft inwall, inner surface is around also closing formation one second area,

b. around formed second area, the filling of C15 pea gravel concreten is carried out to the inner surface of the first area in shield crossing region; The first area in shield crossing region be filled with certain requirement of strength, therefore C20 plain concrete is selected in the casting of first area, and the middle part in shield crossing region, in order to alleviate the burden of shield machine cutting and accelerate shield structure cutting process, select C15 pea gravel concreten to cast;

c. the floor body of pouring structure base plate, floor body has hole, carries out temporary plugging with the concrete identical with floor body concrete grade to hole, can continue the construction upwards carrying out wind tower agent structure afterwards;

d. in the main structure construction of wind tower is carried out or after construction, shield machine cutting enters ventilating shaft, synchronous grouting and the secondary grouting of shield tail pipe sheet is entered in well process to strengthen at shield machine, need if desired to carry out supplementary slip casting fully to block the infiltration position at shield tail rear, after shield tail enters ventilating shaft certain distance completely, then shut down if necessary and cutter head of shield machine is overhauled;

e. when shield machine cutting goes out well, go out in well process need to strengthen shield tail pipe sheet synchronous grouting, secondary grouting and supplementary slip casting to be fully to block the infiltration position at shield tail rear.

further, the inner surface of the first area in shield crossing region is rectangle around the cross section of formed second area, constructability.

further, shield crossing region be greater than cutter head of shield machine area at the area of ventilating shaft short transverse upper section, making shield machine, as far as possible many when passing through what be cut to is C15 pea gravel concreten.

by adopting technique scheme, the construction method of shield crossing ventilating shaft of the present invention, the sequence of construction that shield crossing carries out the main structure construction of wind tower again will be first carried out in prior art, the portion body structure being adjusted to wind tower of first constructing carries out shield crossing again, the construction of wind tower would not be subject to the impact of shield-tunneling construction progress, can effective reduction of erection time, ensure carrying out smoothly of construction in later period, and structurally also very firm, safety.

Accompanying drawing explanation

accompanying drawing 1 is face structural representation in the step a of the construction method of shield crossing ventilating shaft of the present invention;

accompanying drawing 2 is plan structure schematic diagram in the step a of the construction method of shield crossing ventilating shaft of the present invention;

accompanying drawing 3 is face structural representation in the step b of the construction method of shield crossing ventilating shaft of the present invention;

accompanying drawing 4 is plan structure schematic diagram in the step b of the construction method of shield crossing ventilating shaft of the present invention;

accompanying drawing 5 is face structural representation in the step c of the construction method of shield crossing ventilating shaft of the present invention;

accompanying drawing 6 is face structural representation in the steps d of the construction method of shield crossing ventilating shaft of the present invention, and in figure, arrow direction is shield machine tunneling direction;

accompanying drawing 7 is face structural representation in the step e of the construction method of shield crossing ventilating shaft of the present invention, and in figure, arrow direction is shield machine tunneling direction.

number in the figure is:

1, first area; 2, second area; 3, base plate ring beam; 4, ventilating shaft; 5, shield machine; 6, C20 underwater concrete; 7, C35 underwater concrete; 8, floor body.

Detailed description of the invention

below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.

those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.

the definition of synchronous grouting: along with the propelling of shield structure, there will be building gap between section of jurisdiction and the soil body.In order to fill these gaps, will in shield machine progradation, keep that certain pressure (considering injection rate) is continual carries out slip casting from shield tail directly to after wall, at the end of shield machine advances, stop slip casting.The grouting mode of being filled with slurries while that this method being and being formed in annular building space.

secondary grouting: when once grouting effect is undesirable, needs to be supplemented early stage slip casting by secondary grouting.Generally offset in tunnel, ground settlement abnormal time or use at some Special zone (shield structure out of the station, service channel annex).

the construction method of shield crossing ventilating shaft, it comprises the following steps:

a. the bottom of ventilating shaft is cast with C35 underwater concrete 7, C20 underwater concrete 6 from bottom to up successively, the bottommost of wind tower agent structure is structure base slab, structure base slab comprises the base plate ring beam 3 be connected with ventilating shaft 4 inwall and the floor body 8 be connected with base plate ring beam 3, after base plate ring beam 3 reaches designing requirement intensity, remove the upper surface of the C20 underwater concrete 6 of having built in backfill to ventilating shaft 4 in ventilating shaft 4, after removing, ventilating shaft 4 inwall and C20 underwater concrete 6 upper surface are cleared up, carry out C20 plain concrete to first area 1 formwork erection in shield crossing region afterwards to build and maintenance, described shield crossing region is defined as: in the height direction one section of region of ventilating shaft 4, be positioned at below structure base slab, the soffit in shield crossing region is in the below of C20 underwater concrete 6 upper surface, first area 1 is defined as: its soffit is close to C20 underwater concrete 6 upper surface, upper surface is close to the upper surface in shield crossing region, external surface is close to ventilating shaft 4 inwall, inner surface is around also closing formation one second area 2, the cross section of this second area 2 is rectangle,

b. around formed second area 2, the filling of C15 pea gravel concreten is carried out to the inner surface of the first area 1 in described shield crossing region;

c. the floor body 8 of pouring structure base plate, described floor body 8 has hole, carries out temporary plugging with the concrete identical with floor body 8 concrete grade to hole, can continue the construction upwards carrying out wind tower agent structure afterwards;

d. in the main structure construction of wind tower is carried out or after construction, shield machine cutting enters ventilating shaft, synchronous grouting and the secondary grouting of shield tail pipe sheet is entered in well process to strengthen at shield machine, need if desired to carry out supplementary slip casting fully to block the infiltration position at shield tail rear, after shield tail enters ventilating shaft certain distance completely, then shut down if necessary and cutter head of shield machine is overhauled;

e. when shield machine cutting goes out well, go out in well process need to strengthen shield tail pipe sheet synchronous grouting, secondary grouting and supplementary slip casting to be fully to block the infiltration position at shield tail rear.

above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims (3)

1. a construction method for shield crossing ventilating shaft, is characterized in that: it comprises the following steps:
A. the bottommost of wind tower agent structure is structure base slab, structure base slab comprises the base plate ring beam be connected with ventilating shaft inwall and the floor body be connected with base plate ring beam, after described base plate ring beam reaches designing requirement intensity, remove the C20 underwater concrete upper surface of having built in backfill to ventilating shaft in ventilating shaft, after removing, ventilating shaft inwall and C20 underwater concrete upper surface are cleared up, carry out C20 plain concrete to the first area formwork erection in shield crossing region afterwards to build and maintenance, described shield crossing region is defined as: in the height direction one section of region of ventilating shaft, be positioned at below described structure base slab, the soffit in shield crossing region is in the below of described C20 underwater concrete upper surface, described first area is defined as: its soffit is close to C20 underwater concrete upper surface, upper surface is close to the upper surface in shield crossing region, external surface is close to ventilating shaft inwall, inner surface is around also closing formation one second area,
B. around formed second area, the filling of C15 pea gravel concreten is carried out to the inner surface of the first area in described shield crossing region;
C. the floor body of pouring structure base plate, described floor body has hole, carries out temporary plugging with the concrete identical with floor body concrete grade to hole, can continue the construction upwards carrying out wind tower agent structure afterwards;
D. in the main structure construction of wind tower is carried out or after construction, shield machine cutting enters ventilating shaft, synchronous grouting and the secondary grouting of shield tail pipe sheet is entered in well process to strengthen at shield machine, need if desired to carry out supplementary slip casting fully to block the infiltration position at shield tail rear, after shield tail enters ventilating shaft certain distance completely, then shut down if necessary and cutter head of shield machine is overhauled;
E. when shield machine cutting goes out well, go out in well process need to strengthen shield tail pipe sheet synchronous grouting, secondary grouting and supplementary slip casting to be fully to block the infiltration position at shield tail rear.
2. the construction method of shield crossing ventilating shaft according to claim 1, is characterized in that: the inner surface of the first area in described shield crossing region is rectangle around the cross section of formed second area.
3. the construction method of shield crossing ventilating shaft according to claim 1, is characterized in that: described shield crossing region be greater than cutter head of shield machine area at the area of ventilating shaft short transverse upper section.
CN201410522573.0A 2014-11-19 2014-11-19 The construction method of shield crossing ventilating shaft CN104389608B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410522573.0A CN104389608B (en) 2014-11-19 2014-11-19 The construction method of shield crossing ventilating shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410522573.0A CN104389608B (en) 2014-11-19 2014-11-19 The construction method of shield crossing ventilating shaft

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CN104389608A CN104389608A (en) 2015-03-04
CN104389608B true CN104389608B (en) 2016-04-20

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912561B (en) * 2015-05-28 2017-06-16 中建一局集团第五建筑有限公司 Shield is continuous across the construction method of vertical shaft under high artesian complex stratum condition
CN105240018B (en) * 2015-10-30 2018-09-18 中铁上海工程局集团有限公司 Construction of Silo device and method
CN105386770A (en) * 2015-11-26 2016-03-09 中国建筑第六工程局有限公司 Backfill crossing method for shield tunneling machine passing through middle air shaft
CN107514262A (en) * 2017-08-02 2017-12-26 中国建筑第八工程局有限公司 The construction method of shield piping lane
CN107664035B (en) * 2017-10-20 2020-03-20 中国建筑第八工程局有限公司 Shield-well-after-shield construction method for shield pipe gallery
CN109162741B (en) * 2018-10-29 2020-02-07 中铁十二局集团有限公司 Method for synchronous construction of shield penetrating piston air duct and upper structure of piston air duct
CN109989760A (en) * 2019-03-20 2019-07-09 中铁四局集团有限公司 A kind of method of shield crossing ventilating shaft near a river

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2593284B2 (en) * 1993-12-29 1997-03-26 鉄建建設株式会社 Tunnel lining structure and construction method
CN103161471A (en) * 2011-12-19 2013-06-19 上海市基础工程有限公司 Construction method in which large-diameter shield advances across air shaft in long distance
CN103277108A (en) * 2013-04-19 2013-09-04 中铁隧道集团有限公司 Slurry shield tunneling machine underwater arrival construction method
CN103742154B (en) * 2013-12-31 2015-08-12 中交第二航务工程局有限公司 A kind of shield tunnel ventilation shaft construction method

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