CN106050241A - Construction method for single-construction-channel dual-line same direction and same platform subway stations - Google Patents

Construction method for single-construction-channel dual-line same direction and same platform subway stations Download PDF

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Publication number
CN106050241A
CN106050241A CN201610368837.0A CN201610368837A CN106050241A CN 106050241 A CN106050241 A CN 106050241A CN 201610368837 A CN201610368837 A CN 201610368837A CN 106050241 A CN106050241 A CN 106050241A
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CN
China
Prior art keywords
construction
excavation
station
threaded list
tunnel
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CN201610368837.0A
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Chinese (zh)
Inventor
罗维
李亚勇
靳晓光
冯源升
杨强
杨清亭
郭志强
张浩凌
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重庆大学
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Priority to CN201610368837.0A priority Critical patent/CN106050241A/en
Publication of CN106050241A publication Critical patent/CN106050241A/en

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    • 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
    • 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
    • E21D11/14Lining predominantly with metal
    • E21D11/18Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/183Supporting means for arch members, not provided for in E21D11/22
    • 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

Abstract

The invention discloses a construction method for single-construction-channel dual-line same direction and same platform subway stations. According to the plane position relation of every two adjacent subway stations, a main construction channel, construction subchannels and a construction communication channel of the two stations are determined, and station excavation and support are implemented through four steps: excavation of the main construction channels and the construction subchannels, the excavation sequence and switching of station connection sections, the excavation and support sequence of pilot tunnels in station bodies on the left line and the right line of each station, excavation and support of the communication channel, construction of secondary linings of the station bodies on the left line and the right line of each station, and release of core soil. By reasonably arranging the communication construction channel for every two adjacent stations, adjusting the spatial position relation between the construction channels and the stations, and setting the construction sequence of the communication channels and the subway stations, the working efficiency of the tunnel face is enlarged to a great extent, the transportation capacity of the main construction channels and the construction subchannels is brought into a full play, the construction period is remarkably shortened, and the project cost is lowered.

Description

A kind of single construction passage two-wire is in the same direction with the construction method of platform subway station

Technical field

The present invention relates to a kind of construction techniques, particularly relate to a kind of single construction passage two-wire in the same direction with platform subway The construction method stood.

Background technology

The fast development of modern city causes urban transportation to be blocked up all the more, so greatly developing public transport, and particularly rail Road traffic is the inevitable requirement of a lot of big city and megalopolis.Limited by features of terrain, for Economization on land, reduced noise, joint About the energy, beautify the environment, and reduce the construction interference to urban transportation, increasing subway station selects to use subsurface excavation method Construct.As a example by Chongqing City, track traffic loop wire Shapingba station, bus station, phoenix sky, bridge station, TianXing and two youth stations Construct Deng all employing subsurface excavation methods.For ease of passenger AT STATION in realize intersection quickly and easily and change into, metno station design In often occur being arranged in parallel the situation of two subway stations.As a example by No. six Xian Lijia stations of Chongqing City's track traffic, track No. six lines of traffic and No. six line branch lines realize intersecting transfer in this station, and this station is designed as the most same platform in underground bilayer tunneling pair holes Transfer station, uses twin islet four line, and double arch double-deckers, two subway station clear distances are only 6.5m.

The construction of Shallow Covered Metro Station is the dynamic process of a multidimensional, takes which kind of excavation method in work progress How optimum, ensure that adjoining rock stability and Deformation control, in allowed band, are a great problems of city station construction.Not by ground In the case of shape, geological conditions limit, " vcehicular tunnel design specification " (JTG D70-2004) requires that tunnel is preferably designed as up and down Two separate tunnel that row separates.But and precipitous in landform, spine is alternate " chicken feet " area, minimum clean for meeting between two holes Away from requirement, often occur that tunnel represents the problems such as big, the high slope of dumb, floor space, and thus cause construction costs, support Expense of protecting increases, and is also unfavorable for environmental conservation simultaneously.Subway station, city use shallow mining method time, need open up construction passage with Meet the needs that subway station face is opened up, transported dregs and open air exhaust.Generally, subway station buried depth is at 20m Left and right, construction passage length typically at about 300m to meet the Automobile Transportation requirement to the gradient.During metro station construction it is Accelerating construction progress, often arranges construction straight channel in construction passage and opens up face with as much as possible.When in city Heart region uses and leads to platform in the same direction when changing station into, is frequently encountered by urban central zone and has to arrange the feelings of a construction passage Shape.According to existing tunnel construction method, it is common that carry out another subway station after fixing a subway station certain length Build.This construction method will result in work surface and leaves unused, and causes the duration longer, it is impossible to meet subway station and fast and safely build Requirement.Therefore, need a kind of efficient and rational construction method of proposition badly, fast with the double subway station in the same direction, hole of the passage that adapts to singly to construct The requirement of speed safe construction.

Summary of the invention

The purpose of the present invention is that provides a kind of single construction the most same platform of passage two-wire to solve the problems referred to above The construction method of subway station.

The present invention is achieved through the following technical solutions above-mentioned purpose:

The present invention includes setting of main construction passage, construction subchannel and the left line construction service channel with right threaded list road Put, and the excavation supporting method of metro station construction and dregs method of shipment,

Construction in described main construction passage and subway station comprises the following steps:

(1) by single construction main channel after station main body is tunneled, point three subchannels simultaneously enter station respectively, its In, 1, No. 2 subchannel entrance horizontal ranges on main construction passage are 20m, from entrance station, No. 3 subchannels main body, excavate No. 5 Service channel, directly driving is to left threaded list road, now, by portal frame, to left threaded list road upper right base tunnel and right line left tunnel Top heading carries out transformation segment construction simultaneously, and after completing construction conversion, left threaded list road upper right pilot tunnel is to big mileage and little mileage two Direction synchronizes excavation, upper left, the right threaded list road big mileage of pilot tunnel and little mileage both direction and synchronizes excavation, enters the right side from No. 2 subchannels Threaded list road, after completing to caunch, right threaded list road is pilot tunnel on the sidewall of little mileage end excavation left and right, and both sides pilot tunnel construction way incorrect order sets Putting, step sequence is spaced apart 50m, meanwhile carries out the tunneling construction of No. 10 service channels, enters after No. 10 service channels of having constructed Left threaded list road caunches conversion, enters right threaded list road from No. 1 subchannel, has caunched after conversion, and right threaded list road is opened to big mileage end Digging pilot tunnel on the sidewall of left and right, both sides pilot tunnel construction way incorrect order is arranged, and step sequence is spaced apart 50m, meanwhile carries out No. 1 contact logical The tunneling construction in road, enters left threaded list road by No. 1 service channel, completes left threaded list road and caunches conversion;

(2) No. 1 subchannels are after No. 1 service channel enters left threaded list road, and left threaded list road starts to big mileage direction end Pilot tunnel on the sidewall of excavation left and right, both sides pilot tunnel construction way still incorrect order is arranged, and step sequence is spaced apart 50m, and right threaded list road continues past The upper side wall pilot tunnel of the big excavation left and right sides, mileage direction, No. 2 subchannels after No. 10 service channels enter left threaded list road, left line Tunnel excavation is toward pilot tunnel on the sidewall of excavation left and right, little mileage direction, and right threaded list road continues to lead toward little mileage direction excavation upper side wall Hole, pilot tunnel on the sidewall in excavation threaded list road, left and right is continued in No. 3 subchannels;

(3) No. 1 subchannels, No. 1 service channel and left threaded list road, No. 1 subchannel, in floor level fall absolute altitude to sidewall Pilot tunnel absolute altitude, now, No. 1 subchannel enters entrance to the station and can dig wealthy for entrance to 15m so that follow-up two lining chassis enter There are enough turning spaces at station, and left threaded list road, No. 1 subchannel Core Soil takes 20m to big mileage direction simultaneously, completes vault and closes Closing, right threaded list road, No. 1 subchannel continues to the upper pilot tunnel of big mileage direction excavation, and little mileage direction retains Core Soil, in fall plate mistake In journey, No. 2 service channels can first excavate, and is directly excavated to middle base tunnel absolute altitude, then utilizes No. 2 service channels to go out left threaded list road solution Except the dregs of Core Soil, No. 2 subchannel fall absolute altitudes to sidewall middle drift absolute altitude, No. 2 subchannels enter entrance to the station also can be by Entrance is wealthy to be dug to 15m so that follow-up two lining chassis enter stations and have enough turning spaces, the rightest threaded list road Core Soil to Little mileage direction takes 20m, completes vault Guan Bi, and No. 3 subchannels have been dug sidewall pilot tunnel, now can excavation by troughs contact lead to Road, i.e. No. 4, No. 6, No. 8 service channels, to be slagged tap by No. 3 subchannels, each service channel excavation supporting is timely construction two after completing Lining;

(4) No. 1 subchannels, No. 1 service channel and left threaded list road, No. 1 subchannel, fall absolute altitude, to station layer absolute altitude, keeps Core Soil bottom, away from first section of inverted arch excavation section 15~20m, assembles No. 1 two lining chassis and waterproof after 2 sections of inverted arch have been constructed again Pallet car, constructs to big mileage direction, and entrance right threaded list road, No. 2 subchannels fall absolute altitude, to station layer absolute altitude, keeps under Core Soil Portion, away from first section of inverted arch excavation section 15~20m, assembles No. 2 two lining chassis and splash guard chassis after 2 sections of inverted arch have been constructed again, to Constructing in little mileage direction, hereafter, lower pilot tunnel in the left and right sidewall of No. 1 chassis, the middle and lower part of Core Soil keeps reasonable step pitch to continue Pushing ahead, inverted arch and lining cutting keep appropriate distance to continue to the construction of big mileage direction, No. 10 service channels with Core Soil bottom Fall absolute altitude continues to construct to little mileage to lower base tunnel, No. 2 chassis, simultaneously lower pilot tunnel in the sidewall of left and right, and the middle and lower part of Core Soil is protected Holding reasonable step pitch to continue to push ahead, inverted arch and lining cutting keep appropriate distance to construct to little mileage direction with Core Soil bottom.

In described step (1), due to external condition restrictions such as geological conditions, neighboring buildings, a main construction can only be had to lead to Under conditions of road, still carried out excavation driving by entrance station, station tunnel one side by launching a plurality of construction subchannel, coordinate Construction way, accelerates construction speed.

In described step (1), utilize station pattern for the most same platform of two-wire, No. 3 subchannels be directly excavated to left line, Excavate left and right line station tunnel after being then passed through construction conversion simultaneously, and only carry out on the right side of left line that on the left of tunnel and right line tunnel Two ends are excavated.

In described step (3), before No. 1 subchannel carries out dropping absolute altitude extremely middle base tunnel, first carry out opening of No. 2 service channels Dig, release left threaded list road Core Soil during fall absolute altitude simultaneously, utilize No. 2 service channels to go out the slag of Core Soil, dregs now Outward transport mode is: the middle base tunnel dregs of No. 1 subchannel right line tunnel excavation still transports from No. 1 subchannel, No. 1 left line in subchannel The dregs of the middle base tunnel of tunnel excavation transports from No. 1 subchannel through No. 1 service channel, and the dregs removing left line core cubsoil passes through No. 2 service channels transport from No. 1 subchannel.

In described step (3), after completing with right line left side wall pilot drive on the right side of left line, job-hopping carries out service channel , excavation, i.e. excavation 4, No. 6, No. 8 service channels, after excavation supporting, directly carry out two lining constructions.

Even if carrying out to described step (3), No. 3 subchannels complete sidewall pilot drive, and excavation by troughs contact is logical During road, No. 5 service channels can not reduce floor level all the time, therefore, in step (3), can carry out during excavation by troughs service channel The two ends of service channel are excavated simultaneously, and dregs is all transported by No. 3 subchannels.

In described step (4), two two of assembling lining chassis respectively from left line little mileage end and right line big mileage end with phase Direction carrying out two linings and performs the Core Soil simultaneously keeping appropriate distance releasing chassis front, left threaded list road utilizes nearby and excavates Service channel go out to remove the slag of Core Soil.

The beneficial effects of the present invention is:

The present invention be a kind of single construction passage two-wire in the same direction with the construction method of platform subway station, with prior art phase Ratio, the present invention is by increasing construction passage subchannel and service channel so that two tunnels reach the effect of associating excavation, add Operation side, beneficially reduction of erection time and construction progress control.Safety aspect, service channel uses unique excavation by troughs Mode, had both added the operation channel of Work machine, the most effectively ensure that the surrounding rock stability in overall double hole.Two linings perform to be adopted With constructing the most simultaneously, while accelerating construction progress so that surrouding rock stress even variation, it is to avoid is produced from unbalanced stresses district Raw.Associating excavation method provided in method is by increasing construction passage subchannel and tunnel contact, and two tunnels are real Carry out, as an entirety, flowing water tissue of constructing on border, save resource distribution, decrease manual machine on work progress Expending, main construction passage and station tunnel transformation segment construction method effectively prevent main construction passage in traditional method and caunch and carried The constructional difficulties come and risk, decrease the trouble of surveying setting-out and improve the degree of accuracy of this section of excavation, and then improve and make Safety, save the transformation segment construction period.Additionally, carry out excavation supporting with same section, it is not necessary to change construction trolley Height and face explosion scope, accelerate construction speed.

The inventive method uses from station drilling depth with station transformation segment at auxiliary construction passage, and top heading excavation is complete AT STATION Cheng Hou, in auxiliary construction passage and station delivery position section release upper core cubsoil and excavate, to expose auxiliary construction logical for step Road and station interface, carry out interface support reinforcement and i.e. complete auxiliary construction passage and be connected with the conversion at station.Traditional method is adopted Change to station inner excavation from auxiliary construction passage drilling depth during with the most not yet excavation, until by more than auxiliary construction passage Station section excavation supporting completes.Compared to traditional method, this method is from station drilling depth, effectively prevent and leads to from auxiliary construction In the middle part of drilling depth slope, road unwrapping wire, first excavation station and set up numerous and diverse construction way of temporary support on top, reduce construction difficulty Degree and risk, decrease temporary support quantity, has reached save construction costs and reduction of erection time and improve safe purpose.

Sum it up, the inventive method purpose is that the construction way solved in conventional construction method is numerous and diverse, critical section is executed Work risk is relatively big, and temporary support uses more problem, to expect that underground station constructing tunnel reaches more safety with efficient Purpose.

Accompanying drawing explanation

Fig. 1 is that station of the present invention service channel enters station main body excavation sequence floor map.

Fig. 2 is station of the present invention main body top heading excavation floor map.

Fig. 3 is base tunnel and two lining chassis work surface excavation work floor map in the present invention.

Fig. 4 is that the present invention two serves as a contrast chassis excavation sequence floor map.

Fig. 5 is that the present invention two serves as a contrast chassis and service channel excavation sequence floor map.

Fig. 6 is that the present invention two serves as a contrast chassis traveling excavation floor map.

Fig. 7 is that the present invention two serves as a contrast chassis drilling depth scheme schematic diagram.

Reference: No. 1-1 construction passage, No. 2-3 construction passage, No. 3-2 construction passage, 4-1 service channel, 5-2 Number service channel, 6-3 service channel, 7-4 service channel, 8-5 service channel, 9-6 service channel, No. 10-7 contact Passage, 11-8 service channel, 12-9 service channel, 13-10 service channel, 14-tunnel little mileage end, 15-tunnel are big Mileage end, left threaded list road, 16-station, right threaded list road, 17-station, 18-station tunnel are topped bar and are led in excavation, 19-station tunnel Hole excavation, 20-inverted arch excavation section, No. 21-1 two lining chassis, No. 22-2 two lining chassis, 23-Core Soil top face excavate, In the middle part of 24-station tunnel station layer absolute altitude excavation, 7.1-Core Soil top, 7.2-Core Soil, 7.3-Core Soil bottom prepare, The construction of 7.4-inverted arch, 7.5-tie up reinforcing bar and splash guard, 7.6-bis-lining.

Detailed description of the invention

The invention will be further described below in conjunction with the accompanying drawings:

Embodiment sees shown in Fig. 1-7, a kind of big cross section using tunneling, and small interval subway two-wire station tunnel in the same direction joins The method closing excavation supporting, determines main construction passage and the position of auxiliary construction passage according to station, is divided by station excavation supporting It is 4 steps, it may be assumed that main construction passage and the excavation of construction subchannel, sequence of excavation and and the conversion of station switching phase, left and right line Performing and Core Soil of the excavation-support order of pilot tunnel on station, the excavation supporting of service channel, left and right, station line two lining Release.

After the excavation of station tunnel, supporting relates to preliminary bracing structure, temporary support structures and secondary liner structure, often Secondary pilot drive drilling depth to carry out preliminary bracing and gib in time to ensure that pilot tunnel closes cyclization.

The metro station tunnel construction method of this fast and low-risk, Specific construction step is as follows:

(1) by single construction main channel after station main body is tunneled, point three subchannels simultaneously enter station respectively (such as figure Shown in 1).Wherein, 1, No. 2 subchannel entrance horizontal ranges on main construction passage are 20m.Station master is entered from No. 3 subchannels 2 Body, excavates No. 5 service channels 8, and directly driving is to left threaded list road 16.Now, by portal frame, to left threaded list road upper right base tunnel And upper left, right threaded list road base tunnel 18 carries out transformation segment construction simultaneously.After completing construction conversion, left threaded list road upper right pilot tunnel is to tunnel Big mileage 15 and tunnel little mileage 14 both direction synchronize excavation, upper left, the right threaded list road big mileage of pilot tunnel and little mileage both direction Synchronize excavation.Entering right threaded list road from No. 2 subchannels 3, after completing to caunch, right threaded list road excavates left and right sidewall to little mileage end 14 Upper pilot tunnel, both sides pilot tunnel construction way incorrect order is arranged, and step sequence is spaced apart 50m, meanwhile carries out the pick of No. 10 service channels 13 Enter construction.Construct and entered left threaded list road 16 after No. 10 service channels 13 and caunch conversion.Right threaded list road is entered from No. 1 subchannel 1, Having caunched after conversion, right threaded list road 17 excavates pilot tunnel on the sidewall of left and right, both sides pilot tunnel construction way incorrect order to big mileage end 15 Arranging, step sequence is spaced apart 50m, meanwhile carries out the tunneling construction of No. 1 service channel 4.A left side is entered by No. 1 logical 4 roads of contact Threaded list road 16, completes left threaded list road 16 and caunches conversion.

(2) No. 1 subchannels 1 are after No. 1 service channel 4 enters left threaded list road 16, and left threaded list road 16 starts to big mileage Pilot tunnel on the sidewall of left and right is excavated in direction 15, and both sides pilot tunnel construction way still incorrect order is arranged, and step sequence is spaced apart 50m.Right threaded list road 17 continue to excavate the upper side wall pilot tunnel of the left and right sides toward big mileage direction 15.No. 2 subchannels 3 enter a left side through No. 10 service channels 13 Behind threaded list road 16, left threaded list road 16 excavates pilot tunnel on the sidewall of left and right toward little mileage direction 14.Right threaded list road 17 continues toward little mileage Upper side wall pilot tunnel is excavated in direction 14, and pilot tunnel (as shown in Figure 2) on the sidewall in excavation threaded list road, left and right is continued in No. 3 subchannels 2.

At (3) No. 1 subchannel 1,1 service channels 4 and left threaded list road 16, base plate fall absolute altitude is to sidewall middle drift mark High by 19.Now, No. 1 subchannel 1 enters entrance to the station and can dig wealthy for entrance to 15m so that follow-up two lining chassis enter stations There are enough turning spaces.Left threaded list road 16, No. 1 subchannel 1 Core Soil takes 20m to big mileage direction 15 simultaneously, completes vault and closes Close.Right threaded list road 17 continues to the upper pilot tunnel 18 of big mileage excavation.No. 1 subchannel 1,1 service channel 4 and left threaded list road 16 Place, during fall plate, No. 2 service channels 5 can first excavate, and is directly excavated to middle base tunnel absolute altitude 19, then utilizes No. 2 contacts logical Road 5 goes out left threaded list road 14 and releases the dregs of Core Soil.No. 2 logical 3 road fall absolute altitudes are to sidewall middle drift absolute altitude 19.Now, No. 2 Passage 3 enters entrance to the station and also can dig wealthy for entrance to 15m so that follow-up two lining chassis enter station and have enough turnings Space.The rightest threaded list road 17 Core Soil takes 20m to little mileage direction 14, completes vault Guan Bi.No. 3 subchannels 2 are sidewall Pilot tunnel has dug.Now can excavation by troughs service channel, i.e. No. 4, No. 6, No. 8 service channels 7,9,11, gone out by No. 3 subchannels 2 Slag, after each service channel excavation supporting completes, construction in time two serves as a contrast (as shown in Figure 3).

(4) No. 1 subchannels 1 enter left threaded list road 16 and drop absolute altitude to station layer (lower base tunnel) absolute altitude 24, keep under Core Soil Portion is away from first section of inverted arch excavation section 15~20m.No. 1 two lining chassis 21 and splash guard chassis is assembled again after 2 sections of inverted arch have been constructed, Construct to big mileage direction 15.No. 2 subchannels 3 enter right threaded list road fall absolute altitude to station layer (lower base tunnel) absolute altitude 24, holding core Cubsoil bottom is away from first section of inverted arch excavation section 15~20m.No. 2 two lining chassis 22 and waterproof are being assembled after 2 sections of inverted arch have been constructed Pallet car, constructs to little mileage direction 14.(as shown in Figure 4) lower pilot tunnel in the left and right sidewall of No. 1 chassis 21, in Core Soil under Portion keeps reasonable step pitch i.e. 47m scheme (as shown in Figure 7) to continue to push ahead.Inverted arch and lining cutting keep rationally with Core Soil bottom Distance continues to construct to little mileage direction 14.Right line little mileage section stops construction.No. 10 service channels 13 drop absolute altitude to lower base tunnel 24.(as shown in Figure 5) lower pilot tunnel in the sidewall of left and right simultaneously, the middle and lower part of Core Soil keeps reasonable step pitch to continue to push ahead, faces upward Arch and lining cutting keep appropriate distance to construct (as shown in Figure 6) to little mileage direction 14 with Core Soil bottom.

The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and Equivalent defines.

Claims (7)

1. a single construction passage two-wire is in the same direction with the construction method of platform subway station, it is characterised in that: include that main construction is led to The setting of the construction service channel in road, construction subchannel and left line and right threaded list road, and the excavation of metro station construction props up Maintaining method and dregs method of shipment,
Construction in described main construction passage and subway station comprises the following steps:
(1) by single construction main channel after station main body is tunneled, point three subchannels simultaneously enter station respectively, wherein, main 1, No. 2 subchannel entrance horizontal ranges on construction passage are 20m, from entrance station, No. 3 subchannels main body, excavate No. 5 contacts Passage, directly driving is to left threaded list road, now, by portal frame, leads left threaded list road upper right base tunnel and upper left, right threaded list road Hole carries out transformation segment construction simultaneously, and after completing construction conversion, left threaded list road upper right pilot tunnel is to big mileage and little mileage both direction Synchronize excavation, upper left, the right threaded list road big mileage of pilot tunnel and little mileage both direction and synchronize excavation, enter right threaded list from No. 2 subchannels Road, after completing to caunch, right threaded list road is pilot tunnel on the sidewall of little mileage end excavation left and right, and both sides pilot tunnel construction way incorrect order is arranged, Step sequence is spaced apart 50m, meanwhile carries out the tunneling construction of No. 10 service channels, enters left line after No. 10 service channels of having constructed Tunnel caunches conversion, enters right threaded list road from No. 1 subchannel, and after conversion of having caunched, right threaded list road is to a big mileage end excavation left side Pilot tunnel on right side wall, both sides pilot tunnel construction way incorrect order is arranged, and step sequence is spaced apart 50m, meanwhile carries out No. 1 service channel Tunneling construction, enters left threaded list road by No. 1 service channel, completes left threaded list road and caunches conversion;
(2) No. 1 subchannels are after No. 1 service channel enters left threaded list road, and left threaded list road starts to excavate to big mileage direction end Pilot tunnel on the sidewall of left and right, both sides pilot tunnel construction way still incorrect order is arranged, and step sequence is spaced apart 50m, and right threaded list road continues toward in greatly The upper side wall pilot tunnel of the Cheng Fangxiang excavation left and right sides, No. 2 subchannels after No. 10 service channels enter left threaded list road, left threaded list road Excavation is toward pilot tunnel on the sidewall of excavation left and right, little mileage direction, and right threaded list road continues toward little mileage direction excavation upper side wall pilot tunnel, No. 3 Pilot tunnel on the sidewall in excavation threaded list road, left and right is continued in subchannel;
(3) No. 1 subchannels, No. 1 service channel and left threaded list road, No. 1 subchannel, floor level fall absolute altitude is to sidewall middle drift Absolute altitude, now, No. 1 subchannel enters entrance to the station and can dig wealthy for entrance to 15m so that follow-up two lining chassis enter station Having enough turning spaces, left threaded list road, No. 1 subchannel Core Soil takes 20m to big mileage direction simultaneously, completes vault and closes, and 1 Number right threaded list road, subchannel continues to the upper pilot tunnel of big mileage direction excavation, and little mileage direction retains Core Soil, during fall plate 2 Number service channel can first excavate, and is directly excavated to middle base tunnel absolute altitude, then utilizes No. 2 service channels to go out left threaded list road and releases core The dregs of soil, No. 2 subchannel fall absolute altitudes are to sidewall middle drift absolute altitude, and No. 2 subchannel entrance entrance to the stations also can be wealthy by entrance Digging to 15m so that follow-up two lining chassis enter station and have enough turning spaces, the rightest threaded list road Core Soil is to little mileage Direction takes 20m, completes vault Guan Bi, and No. 3 subchannels have dug sidewall pilot tunnel, now can excavation by troughs service channel, i.e. 4 Number, No. 6, No. 8 service channels, to be slagged tap by No. 3 subchannels, each service channel excavation supporting is timely two linings of constructing after completing;
(4) No. 1 subchannels, No. 1 service channel and left threaded list road, No. 1 subchannel, fall absolute altitude, to station layer absolute altitude, keeps core Soil bottom, away from first section of inverted arch excavation section 15~20m, assembles No. 1 two lining chassis and waterproof pallet after 2 sections of inverted arch have been constructed again Car, constructs to big mileage direction, and No. 2 subchannels enter right threaded list road fall absolute altitude to station layer absolute altitude, keep Core Soil bottom away from First section of inverted arch excavation section 15~20m, assembles No. 2 two lining chassis and splash guard chassis, Xiang little Li after 2 sections of inverted arch have been constructed again Cheng Fangxiang constructs, and hereafter, lower pilot tunnel in the left and right sidewall of No. 1 chassis, the middle and lower part of Core Soil keeps reasonable step pitch to continue forward Advancing, inverted arch and lining cutting keep appropriate distance to continue to the construction of big mileage direction, No. 10 service channel fall marks with Core Soil bottom Up to descending base tunnel, No. 2 chassis to continue to construct to little mileage, simultaneously lower pilot tunnel in the sidewall of left and right, the middle and lower part of Core Soil keeps closing Reason step pitch continues to push ahead, and inverted arch and lining cutting keep appropriate distance to construct to little mileage direction with Core Soil bottom.
A kind of single construction passage two-wire the most according to claim 1 is in the same direction with the construction method of platform subway station, and it is special Levy and be: in described step (1), due to external condition restrictions such as geological conditions, neighboring buildings, can only have a main construction passage Under conditions of, still being carried out excavation driving by entrance station, station tunnel one side by launching a plurality of construction subchannel, cooperation is executed Work step sequence, accelerates construction speed.
A kind of single construction passage two-wire the most according to claim 1 is in the same direction with the construction method of platform subway station, and it is special Levy and be: in described step (1), utilize station pattern for the most same platform of two-wire, No. 3 subchannels are directly excavated to left line, Excavate left and right line station tunnel after being then passed through construction conversion simultaneously, and only carry out on the right side of left line that on the left of tunnel and right line tunnel Two ends are excavated.
A kind of single construction passage two-wire the most according to claim 1 is in the same direction with the construction method of platform subway station, and it is special Levy and be: in described step (3), before No. 1 subchannel carries out dropping absolute altitude extremely middle base tunnel, first carry out the excavation of No. 2 service channels, Release left threaded list road Core Soil during fall absolute altitude simultaneously, utilize No. 2 service channels to go out the slag of Core Soil, dregs outward transport now Mode is: the middle base tunnel dregs of No. 1 subchannel right line tunnel excavation still transports from No. 1 subchannel, left threaded list road, No. 1 subchannel The dregs of the middle base tunnel of excavation transports from No. 1 subchannel through No. 1 service channel, removes the dregs of left line core cubsoil by No. 2 Service channel transports from No. 1 subchannel.
A kind of single construction passage two-wire the most according to claim 1 is in the same direction with the construction method of platform subway station, and it is special Levying and be: in described step (3), after completing with right line left side wall pilot drive on the right side of left line, job-hopping carries out service channel, Excavation, i.e. excavation 4, No. 6, No. 8 service channels, after excavation supporting, directly carry out two lining constructions.
A kind of single construction passage two-wire the most according to claim 1 is in the same direction with the construction method of platform subway station, and it is special Levy and be: even if carrying out to described step (3), No. 3 subchannels complete sidewall pilot drive, excavation by troughs service channel Time, No. 5 service channels can not reduce floor level all the time, therefore, in step (3), can join during excavation by troughs service channel The two ends of network passage are excavated simultaneously, and dregs is all transported by No. 3 subchannels.
A kind of single construction passage two-wire the most according to claim 1 is in the same direction with the construction method of platform subway station, and it is special Levy and be: in described step (4), two two of assembling lining chassis respectively from left line little mileage end mileage big with right line end with relative Direction carries out two linings and performs and keep appropriate distance to release the Core Soil in chassis front simultaneously, and left threaded list road utilizes nearby and excavated Service channel goes out to remove the slag of Core Soil.
CN201610368837.0A 2016-05-23 2016-05-23 Construction method for single-construction-channel dual-line same direction and same platform subway stations CN106050241A (en)

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