CN108222981A - Bright excavation construction method after underground station is first dark - Google Patents

Bright excavation construction method after underground station is first dark Download PDF

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Publication number
CN108222981A
CN108222981A CN201711473607.1A CN201711473607A CN108222981A CN 108222981 A CN108222981 A CN 108222981A CN 201711473607 A CN201711473607 A CN 201711473607A CN 108222981 A CN108222981 A CN 108222981A
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China
Prior art keywords
station
pilot tunnel
construction
corner
floor
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Application number
CN201711473607.1A
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Chinese (zh)
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CN108222981B (en
Inventor
王猛
李勇
聂鑫路
张宇川
殷立达
许满吉
王成
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Zhongche Construction Engineering Co Ltd
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Zhongche Construction Engineering Co Ltd
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Priority to CN201711473607.1A priority Critical patent/CN108222981B/en
Publication of CN108222981A publication Critical patent/CN108222981A/en
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Publication of CN108222981B publication Critical patent/CN108222981B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D13/00Large underground chambers; Methods or apparatus for making them
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • 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

Abstract

The invention discloses the excavation construction method that a kind of underground station is bright after first dark, the first step, the lower left corner pilot tunnel in Station cross section and lower right corner pilot tunnels;Second step applies just branch, two linings and end bottom plate, side wall, end floor, frame column, end platform slab, then complete to lay a railway track, power and communicate in lower left corner pilot tunnel, lower right corner pilot tunnel;Third walks, and top carries out slope excavation AT STATION, until at the floor location of station end, then excavate the central ground between lower left corner pilot tunnel, lower right corner pilot tunnel;4th step applies central base sheet, central floor and the central platform slab and vault in station cross section;5th step, to being backfilled above station.Station is made to have train-passing through conditions in advance, realizes track circuit being open to traffic in advance before the construction of tunneling underground station is completed;The advantages of shortening the entire construction period of underground station, not only improve construction efficiency, but also reducing the time for occupying urban ground, taken into account full open cut and whole dark digging.

Description

Bright excavation construction method after underground station is first dark
Technical field
The present invention relates to technical field of tunnel construction, and in particular to bright excavation construction side after a kind of underground station is first dark Method.
Background technology
Fig. 1, Fig. 2 show the layout drawing of underground station A and track circuit B.Or existing underground station using whole dark digging, Using full open cut.Since long-time, in large area occupancy urban ground space are wanted in full open cut, the scope of application is very small, because This is mostly constructed using whole dark digging;And full open-cut is compared in whole dark digging construction, construction efficiency is significantly low.
But no matter any digging mode, can just be open to traffic after the completion of being required for excavating AT STATION.Simultaneously as ground is got off It stands often close to periphery construction of structures, sometimes even on construction of structures underface, therefore needs to adopt various measures in constructing Reduce the influence to surrounding enviroment, it is slow to also result in construction speed.Therefore, the construction of underground station is often as the duration Key node becomes the important restriction factor being open to traffic.
Fig. 3 is a kind of conventional construction method of tunneling underground station, excavates 01-06 part successively, then excavate upper half section 07 part applies two linings, 08 part, finally excavates middle part 09-011 part of ground, applies middle part 012 part of tunnel floor.
Invention content
The present invention is intended to provide a kind of underground station construction method so that tunnel first leads to before underground station construction is completed Vehicle so as to ensure that track circuit comes into operation early, meets the trip requirements of people.
For this purpose, the technical solution adopted in the present invention is:Bright excavation construction method after a kind of underground station is first dark, including Following steps:
The first step, the lower left corner pilot tunnel in Station cross section and lower right corner pilot tunnel;
Second step applies just branch, two linings and end bottom plate, side wall, end in lower left corner pilot tunnel, lower right corner pilot tunnel Floor, frame column, end platform slab, then complete to lay a railway track, power and communicate, station is made to have train-passing through conditions in advance;
Third walks, and top carries out slope excavation AT STATION, until at the floor location of station end, then excavate the lower left corner and lead Central ground between hole, lower right corner pilot tunnel;
4th step applies central base sheet, central floor and the central platform slab and vault in station cross section;
5th step, to being backfilled above station.
As a preferred embodiment of the above solution, in second step, protecting wall is installed in the frame intercolumniation of left and right lower pilot tunnel, is prevented The soil body enters in left and right lower pilot tunnel in subsequent construction, and is removed before finishing AT STATION.
It may further be preferable that the dregs generated in first step construction, passes through running tunnel, station ventilating shaft or construction channel Outward transport;By the use of existing running tunnel, station ventilating shaft or construction channel as wan access outside tunneling dregs, it is not necessary in addition apply slag The outer wan access of soil, further shortens construction period.
It may further be preferable that when second step is constructed, end floor, end platform slab setting reserved steel bar or reinforcing bar connect Device is refuted, facilitates subsequent construction.
The beneficial effects of the invention are as follows:By the first Station lower left corner, lower right corner pilot tunnel (referred to as " left and right pilot tunnel "), and First branch, two linings and end bottom plate, side wall, end floor, frame column, the end platform slab of left and right pilot tunnel are applied, then completes to spread Rail, power supply and communication, make station have train-passing through conditions in advance, realize track circuit shifting to an earlier date before underground station construction is completed It is open to traffic, so as to ensure that track circuit comes into operation early, meets the trip requirements of people;By the way of first tunneling, rear open cut Excavation construction is carried out, the entire construction period of underground station is shortened, not only improves construction efficiency, but also is reduced with occupying city The time in face, the advantages of having taken into account full open cut and whole dark digging, and realize being open to traffic in advance for station.
Description of the drawings
Fig. 1 is the skiagraph of tunneling underground station.
Fig. 2 is the cross section enlarged drawing of tunneling underground station.
Fig. 3 is the traditional construction process chart of tunneling underground station.
Fig. 4 a are the states after the completion of the first step of the present invention.
Fig. 4 b are the horizontal sectional views of Fig. 4 a.
Fig. 4 c are the skiagraphs of Fig. 4 a.
Fig. 5 is the state after the completion of second step of the present invention.
Fig. 6 is the state after the completion of third step of the present invention.
Fig. 7 is the state after the completion of the 4th step of the invention.
Fig. 8 is the state after the completion of the 5th step of the invention.
Specific embodiment
By way of example and in conjunction with the accompanying drawings, the invention will be further described:
The construction of Fig. 1, underground station A shown in Fig. 2 are completed, and realizes track circuit B before the construction completion of underground station Be open to traffic in advance, using the excavation construction method that a kind of underground station is bright after first dark, include the following steps:
The first step, as shown in fig. 4 a, lower left corner pilot tunnel C and lower right corner pilot tunnel D (referred to as " left and right in Station cross section Pilot tunnel ").Up/down steps excavation is respectively adopted in left and right pilot tunnel, can also optionally use full section method, three benching tunnelling methods, CD methods etc. It excavates;The digging modes such as Shock reducing blasting mode or mechanical profile can be used by excavating.
With reference to shown in Fig. 4 a -4c, top bar 11 and to get out of a predicament or an embarrassing situation 12 stagger settings, pilot tunnel construction in left and right is staggered certain distance, Left and right pilot tunnel is connected by passage aisle 13, and the dregs generated in work progress is facilitated to be transported outward by channel 14 of constructing.
Second step, as shown in figure 5, applying just branch, two linings and end bottom plate in lower left corner pilot tunnel, lower right corner pilot tunnel 21st, side wall 22, end floor 23, frame column 24, end platform slab 25, then complete to lay a railway track, power and communicate, station is made to have in advance Standby train-passing through conditions.Just branch, two linings, then apply end bottom plate 21, side wall 22, end floor 23, frame column 24, end can first be applied Head platform slab 25, can also be carried out at the same time, to further speed up construction progress.
Preferably, in second step, protecting wall (not shown), protection are installed in the frame intercolumniation of left and right lower pilot tunnel Wall can be that steel construction wall, brick mix wall, prevent the soil body in subsequent construction from entering in left and right lower pilot tunnel, and torn open before fitting up AT STATION It removes.
Third walks, as shown in fig. 6, top carries out slope excavation AT STATION, until at 23 position of station end floor, then open Dig the central ground 31 between lower left corner pilot tunnel, lower right corner pilot tunnel;
4th step, as shown in fig. 7, applying the central base sheet 51 in station cross section, central floor 52 and central platform slab 53 And vault 54;Two end bottom plates 21 that central base sheet 51 and second step apply form the complete floor of underground station, central building Two end floors 23 that plate 52 and second step apply form the complete floor of underground station, and central platform slab 53 and second step are applied The two end platform slabs 25 made form the complete platform slab of underground station.
5th step, to being backfilled above station, as shown in Figure 8.
After the completion of 5th step, after station carries out the operations such as conventional finishing, equipment installation, have station uses work( Energy.
For convenience of subsequent construction, when second step is constructed, end floor 23, end platform slab 25 sets reserved steel bar respectively 26 or reinforcing bar connector (as shown in Figure 5).
Preferably, the dregs generated in first step construction is transported outward by running tunnel, station ventilating shaft or construction channel, borrowed By the use of existing running tunnel, station ventilating shaft or construction channel as the outer wan access of tunneling dregs.

Claims (4)

  1. Bright excavation construction method after 1. a kind of underground station is first dark, which is characterized in that include the following steps:
    The first step, the lower left corner pilot tunnel in Station cross section and lower right corner pilot tunnel;
    Second step, applied in lower left corner pilot tunnel, lower right corner pilot tunnel just branch, two lining and end bottom plate, side wall, end floor, Frame column, end platform slab, then complete to lay a railway track, power and communicate, station is made to have train-passing through conditions in advance;
    Third walks, and top carries out slope excavation AT STATION, until at the floor location of station end, then excavate lower left corner pilot tunnel, the right side Central ground between inferior horn pilot tunnel;
    4th step applies central base sheet, central floor and the central platform slab and vault in station cross section;
    5th step, to being backfilled above station.
  2. Bright excavation construction method after 2. underground station according to claim 1 is first dark, it is characterised in that:In second step In, protecting wall is installed in the frame intercolumniation of left and right lower pilot tunnel, prevents the soil body in subsequent construction from entering in left and right lower pilot tunnel, and It is removed before the finishing of station.
  3. Bright excavation construction method after 3. underground station according to claim 1 is first dark, it is characterised in that:The first step is constructed The dregs of middle generation is transported outward by running tunnel, station ventilating shaft or construction channel.
  4. Bright excavation construction method after 4. underground station according to claim 1 is first dark, it is characterised in that:It is applied in second step Working hour, end floor, end platform slab setting reserved steel bar or reinforcing bar connector.
CN201711473607.1A 2017-12-29 2017-12-29 Excavation construction method for underground station with dark condition before bright condition Active CN108222981B (en)

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CN201711473607.1A CN108222981B (en) 2017-12-29 2017-12-29 Excavation construction method for underground station with dark condition before bright condition

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Application Number Priority Date Filing Date Title
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CN108222981A true CN108222981A (en) 2018-06-29
CN108222981B CN108222981B (en) 2020-05-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2715497C1 (en) * 2019-05-16 2020-02-28 Открытое акционерное общество "Научно-исследовательский, проектно-изыскательский институт "Ленметрогипротранс" Method of erection and arrangement of a single-span underground metro station of an open method of performing works

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Publication number Priority date Publication date Assignee Title
CN1126786A (en) * 1994-09-24 1996-07-17 北京市城建设计研究院 Hidden construction process of large underground engineering with flat roof and vertical walls
CN102226398A (en) * 2011-06-02 2011-10-26 中铁二院工程集团有限责任公司 Soft rock four-line large-span tunnel compound double-side wall bracing cable conversion excavation construction method
CN104268365A (en) * 2014-07-25 2015-01-07 中煤西安设计工程有限责任公司 Critical excavation length determining method of thick sand layer gentle slope inclined shaft surface excavation method and sub-surface excavation method
CN104963705A (en) * 2015-07-20 2015-10-07 上海市机械施工集团有限公司 Underground space excavating and constructing method
CN205422752U (en) * 2015-11-25 2016-08-03 中铁十八局集团有限公司 Interior top longeron of pilot tunnel serves as a contrast synchronous construction structures with hogging no. 2 in secretly digging station median septum method
CN106869969A (en) * 2017-03-14 2017-06-20 中铁五局集团第工程有限责任公司 A kind of excavation supporting construction method of soft rock large section tunnel

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Publication number Priority date Publication date Assignee Title
CN1126786A (en) * 1994-09-24 1996-07-17 北京市城建设计研究院 Hidden construction process of large underground engineering with flat roof and vertical walls
CN102226398A (en) * 2011-06-02 2011-10-26 中铁二院工程集团有限责任公司 Soft rock four-line large-span tunnel compound double-side wall bracing cable conversion excavation construction method
CN104268365A (en) * 2014-07-25 2015-01-07 中煤西安设计工程有限责任公司 Critical excavation length determining method of thick sand layer gentle slope inclined shaft surface excavation method and sub-surface excavation method
CN104963705A (en) * 2015-07-20 2015-10-07 上海市机械施工集团有限公司 Underground space excavating and constructing method
CN205422752U (en) * 2015-11-25 2016-08-03 中铁十八局集团有限公司 Interior top longeron of pilot tunnel serves as a contrast synchronous construction structures with hogging no. 2 in secretly digging station median septum method
CN106869969A (en) * 2017-03-14 2017-06-20 中铁五局集团第工程有限责任公司 A kind of excavation supporting construction method of soft rock large section tunnel

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2715497C1 (en) * 2019-05-16 2020-02-28 Открытое акционерное общество "Научно-исследовательский, проектно-изыскательский институт "Ленметрогипротранс" Method of erection and arrangement of a single-span underground metro station of an open method of performing works

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