CN106246190B - A kind of nine base tunnel construction methods of tunnel and Double side wall - Google Patents

A kind of nine base tunnel construction methods of tunnel and Double side wall Download PDF

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Publication number
CN106246190B
CN106246190B CN201610663971.3A CN201610663971A CN106246190B CN 106246190 B CN106246190 B CN 106246190B CN 201610663971 A CN201610663971 A CN 201610663971A CN 106246190 B CN106246190 B CN 106246190B
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tunnel
arch
construction
lining cutting
side wall
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CN106246190A (en
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周玉兵
胡立正
徐磊
岳阳
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China Railway 20th Bureau Group Corp
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China Railway 20th Bureau Group Corp
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/10—Lining 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/10—Lining 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
    • E21D11/102—Removable shuttering; Bearing or supporting devices therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/12—Temporary supports for use during building; Accessories
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00—Provisional protective covers for working space
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention discloses a kind of nine base tunnel construction methods of tunnel and Double side wall, including step：First, tunnel tentatively excavates：Institute's construction tunnel is tentatively excavated from the front to the back along tunnel Longitudinal extending direction, and obtains the preliminary excavation hole body for excavating and completing；2nd, preliminary bracing construction and temporary supporting system installation：Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back, obtains the Tunnel structure of construction molding；Again temporary supporting system is set up on the inside of the Tunnel structure for completion of having constructed from the front to the back；3rd, arch springing lining construction and the backfill of arch springing section inverted arch；4th, temporary supporting system dismounting and arch wall lining construction；5th, tunnel subsequently excavates；6th, tunnel bottom inverted arch lining construction；7th, the lining cutting of tunnel bottom inverted arch backfills.The method of the present invention step is simple, design is reasonable and easy construction, using effect are good, and energy is easy, is rapidly completed nine base tunnel work progress of tunnel and Double side wall, and work progress is safe and reliable.

Description

A kind of nine base tunnel construction methods of tunnel and Double side wall
Technical field
The invention belongs to technical field of tunnel construction, more particularly, to a kind of nine base tunnel construction methods of tunnel and Double side wall.
Background technology
Two side-wall pilot tunnel is a kind of mode of tunnel excavation, also known as twin side heading method or glasses working, belongs to new Austria One branch of method, using New Austrian Tunneling Method basic principle as foundation.It is used to open when carrying out tunnel excavation using two side-wall pilot tunnel Wa Mian branches are generally in the form of is divided into four pieces, i.e. left side wall base tunnel (also referred to as left side wall pilot tunnel), right side by tunnel excavation section Wall base tunnel (also referred to as right side wall pilot tunnel), top Core Soil region base tunnel (also referred to as top Core Soil region pilot tunnel) and get out of a predicament or an embarrassing situation Excavate base tunnel (also referred to as get out of a predicament or an embarrassing situation and excavate pilot tunnel).Field measurement shows that the subsidence caused by two side-wall pilot tunnel is only The 1/2 of short benching tunnelling method.Although two side-wall pilot tunnel excavated section piecemeal is more, disturbance is big, the time of initial support tunneling boring closure It is long, but each piecemeal is each self-closing immediately after excavation, thus hardly develop in construction intermediate deformation.Double side wall is led Hole method construction safety, but speed is slower, and cost is higher.
Lining cutting is permanent to prevent surrouding rock deformation or cave in along tunnel trunk periphery from being built with materials such as armored concrete Property supporting construction.When carrying out tunnel excavation using two side-wall pilot tunnel, since excavated section piecemeal is more, thus tunnel-liner is corresponding Constructed using piecemeal, difficulty of construction is larger and construction procedure is complicated, and construction quality is difficult to ensure that.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that provide a kind of tunnel double-side Nine base tunnel construction methods of wall, its method and step is simple, design is reasonable and easy construction, using effect are good, can be easy, quick complete Into nine base tunnel work progress of tunnel and Double side wall, and work progress is safe and reliable.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of nine base tunnel constructions of tunnel and Double side wall Method, it is characterised in that this method comprises the following steps：
Step 1: tunnel tentatively excavates：Institute's construction tunnel is tentatively opened from the front to the back along tunnel Longitudinal extending direction Dig, and obtain the preliminary excavation hole body for excavating and completing；
The Tunnel of institute's construction tunnel includes left side wall pilot tunnel, right side wall pilot tunnel, top Core Soil region pilot tunnel and is located at Getting out of a predicament or an embarrassing situation immediately below the top Core Soil region pilot tunnel excavates pilot tunnel, and the left side wall pilot tunnel is in the right side wall pilot tunnel Symmetrical to lay, the top Core Soil region pilot tunnel and excavation pilot tunnel of getting out of a predicament or an embarrassing situation are respectively positioned on the left side wall pilot tunnel and are led with right side wall Between hole；The top Core Soil region pilot tunnel is divided into arch pilot tunnel and the middle part pilot tunnel immediately below the pilot tunnel of arch；It is described Left side wall pilot tunnel is from top to bottom divided into upper lateral part pilot tunnel, middle sidepiece pilot tunnel and following side pilot tunnel with right side wall pilot tunnel；It is described first Step is excavated hole body and is made of the left side wall pilot tunnel, the right side wall pilot tunnel and arch pilot tunnel, positioned at described in the Tunnel Region is excavated to be follow-up in the preliminary region for excavating side in the body of hole；
The secondary liner structure of the Tunnel is the concrete lining that tunneling boring supporting is carried out to Tunnel, described secondary Arch wall lining cutting of the liner structure including the arch wall progress supporting to Tunnel, the tunnel bottom to the progress supporting of Tunnel bottom are faced upward Arch lining block and left and right two are connected to the arch springing lining cutting between the arch wall lining cutting and tunnel bottom inverted arch lining cutting, two institutes State the left and right sides that arch springing lining cutting is symmetrically laid in tunnel bottom inverted arch lining cutting；The arch springing lining cutting includes serving as a contrast positioned at the arch wall Build the side wall bottom lining cutting of bottom and the arch springing section inverted arch lining cutting on the outside of tunnel bottom inverted arch lining cutting；
Step 2: preliminary bracing construction and temporary supporting system installation：Carried out in step 1 in the preliminary digging process in tunnel, Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction, obtains the tunnel of construction molding Road preliminary bracing structure；Again temporary support is set up on the inside of the Tunnel structure for completion of having constructed from the front to the back System, the temporary supporting system are erected between the Tunnel structure and follow-up excavation region；
Step 3: arch springing lining construction and the backfill of arch springing section inverted arch：Along tunnel Longitudinal extending direction from the front to the back to two The arch springing lining cutting is constructed respectively, and to being returned described in two arch springing lining cutting in the arch of arch springing section inverted arch lining cutting Fill out, obtain arch springing section inverted arch backfill structure；
Step 4: temporary supporting system is removed and arch wall lining construction：Along tunnel Longitudinal extending direction from the front to the back to step Temporary supporting system is removed described in rapid two, and using portable lining construction device from the front to the back to the arch wall lining cutting Construct, the arch wall lining cutting of construction molding is fastenedly connected with two in the step 3 arch springing lining cutting and is integrated；
The movable type lining construction device includes the movable type that can be moved back and forth in the preliminary excavation hole body Full hall scaffold and carried out on the portable full hall scaffold and to the arch wall lining cutting molding construction template it is total Into the arch wall lining cutting is included to the Arch lining of Tunnel arch progress supporting and two respectively to the left and right sides of Tunnel Abutment wall carries out the side wall lining of supporting, and two side wall linings are symmetrically laid in below the left and right sides of Arch lining；It is described Portable full hall scaffold includes the upper falsework being erected in the pilot tunnel of arch and two are erected on the left side wall and lead respectively Hole and the sidepiece scaffold in the right side wall pilot tunnel, the upper falsework bottom are equipped with and can be fastened in the temporary support The top running gear translated, each sidepiece scaffold bottom, which is respectively arranged with, to backfill structure in the arch springing section inverted arch On the lower running system that is translated；The template assembly includes the arch forming panel that molding construction is carried out to Arch lining With two abutment wall forming panels that respectively two side wall linings are carried out with molding construction, two abutment wall forming panels pair Claim to be laid in below the left and right sides of arch forming panel；The arch forming panel is supported in above upper falsework, two The abutment wall forming panel is respectively supported on the outside of two sidepiece scaffolds；
Step 5: tunnel subsequently excavates：Follow-up region of excavating is excavated from the front to the back along tunnel Longitudinal extending direction, Obtain to excavate the middle part pilot tunnel formed and get out of a predicament or an embarrassing situation and excavate pilot tunnel；
Step 6: tunnel bottom inverted arch lining construction：Along tunnel Longitudinal extending direction from the front to the back to tunnel bottom inverted arch Lining cutting is constructed, and the lining cutting of tunnel bottom inverted arch and the two arch springing lining cutting in step 3 of construction molding are fastenedly connected as one Body；
Step 7: the lining cutting of tunnel bottom inverted arch backfills：To being backfilled in the arch of tunnel bottom inverted arch lining cutting.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Upper falsework described in step 4 and The length of two sidepiece scaffolds is 9m~12m.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Tunnel described in step 2 Structure includes multiple first branch steelframes laid from the front to the back along tunnel Longitudinal extending direction and tunneling boring supporting is carried out to Tunnel, The just branch steelframe is the supporting steel frame that tunneling boring supporting is carried out to Tunnel, and the just branch steelframe includes serving as a contrast positioned at the arch wall Build inner side and the arch wall to Tunnel carries out the steel arch-shelf of supporting, carried out below the inverted arch lining cutting and to Tunnel bottom The arch springing steelframe that the bottom link of supporting and left and right two are connected between steel arch-shelf and bottom link, described in two Arch springing steelframe is symmetrically laid in the left and right sides of bottom link, steel arch-shelf and two arch springing steelframe composition just Zhi Gang The preliminary mounting bracket of frame；
Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction in step 2 When, the preliminary mounting bracket of multiple just branch steelframes is installed respectively from the front to the back；Multiple just branch steelframes it is described The longitudinal connecting member laid between preliminary mounting bracket by multiple tracks along tunnel Longitudinal extending direction, which is fastenedly connected, to be integrated；
Carried out in step 5 in the follow-up digging process in tunnel, from the front to the back to the bottom link of multiple just branch steelframes Installed respectively, and installed bottom link is fastenedly connected with the preliminary mounting bracket that installation is complete as one Body.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Temporary supporting system described in step 2 Including temporary support structure in multiple holes, temporary support structure is separately mounted to multiple just branch steelframes in multiple holes In the preliminary mounting bracket, temporary support structure connects with the preliminary mounting bracket fastening on the outside of it in each hole One is connected in, temporary support structure is laid in constructed tunnel with the preliminary mounting bracket on the outside of it in each hole On the same tunnel cross-section in road；
Temporary support structure includes two symmetrical branch arranged on the follow-up side supports excavated at left and right sides of region in the hole Frame, a upper support shelf for being supported in follow-up excavation area top, be supported in above upper support shelf and the preliminary installation Upper support structure between frame and two are respectively supported between two side supports framves and the preliminary mounting bracket Side supports structure, two side supports structures are located in the left side wall pilot tunnel and the right side wall pilot tunnel respectively, institute State upper support structure to be located in the pilot tunnel of arch, the upper support shelf and two side supports frame composition medial support frames Frame, the medial support frame, the upper support structure and two side supports structures are laid in same vertical plane On.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Tunnel described in step 2 Structure further includes the arch wall preliminary bracing structure that supporting is carried out to the arch wall of Tunnel, and the arch wall preliminary bracing structure is anchor net Spray supporting construction；
Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction in step 2, First the preliminary mounting bracket of multiple just branch steelframes is installed respectively from the front to the back, then using anchor net unit support Method carries out supporting to the arch wall of Tunnel, obtains the arch wall preliminary bracing structure of construction molding, and makes the preliminary peace Shelve and be anchored in the arch wall preliminary bracing structure with the longitudinal connecting member.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Temporary supporting system is carried out in step 4 When dismounting and arch wall lining construction, first along tunnel Longitudinal extending direction from the front to the back to the institute in temporary support structure in the hole State upper support structure and two side supports structures are removed respectively, then using portable lining construction device by rear Construct to the arch wall lining cutting forward, then from the front to the back to the medial support in temporary support structure in the hole Frame is removed respectively.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Temporary supporting system described in step 2 Top is provided with top vertical shift platform, the upper support for having and being supported to upper falsework of tiling on the top vertical shift platform Plate, multiple top translation tracks laid along tunnel Longitudinal extending direction are provided with the upper backup pad from left to right；
Top running gear described in step 4 includes multigroup top that translation track is moved back and forth on top respectively Traveling wheel, top traveling wheel described in every group include multiple be installed on from the front to the back and upper falsework bottom and are mounted on same Top traveling wheel on a top translation track；
The quantity of the inverted arch of arch springing section described in step 3 backfill structure is two, two arch springing section inverted arch backfill structures It is located at the left and right sides of the medial support frame respectively；Left and right two is respectively arranged with each arch springing section inverted arch backfill structure The lower part translation track laid along tunnel Longitudinal extending direction；
Lower running system described in step 4 includes two groups of left and right respectively before two lower part translation tracks carry out The lower running wheel moved afterwards, lower running wheel described in every group are installed on sidepiece scaffold bottom from the front to the back including multiple And it is mounted on the lower running wheel on the same lower part translation track.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Upper falsework described in step 4 and Two sidepiece scaffolds are that the scaffold formed is set up by steel pipe；
Two sidepiece scaffolds are laid in symmetrical；The left and right sides of the upper falsework and two sidepiece feet Hand cradle is fastenedly connected between top by transverse connection structure, and the transverse connection structure includes multiple cloth from the front to the back If lateral connection frame；
The upper mould supporting rack being supported to arch forming panel is provided with the upper falsework, described in two The side template supporting rack being supported to the abutment wall forming panel is both provided with the outside of sidepiece scaffold.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：The inverted arch of arch springing section described in step 1 serves as a contrast Build and be divided into inverted arch lining cutting and the arch springing section inner side inverted arch lining cutting on the inside of inverted arch lining cutting on the outside of arch springing section on the outside of arch springing section, it is described Inverted arch lining cutting is connected on the outside of arch springing section between inverted arch lining cutting and tunnel bottom inverted arch lining cutting on the inside of arch springing section；
When arch springing lining construction and the backfill construction of arch springing section inverted arch are carried out in step 3, first to two arch springing lining cutting Side wall bottom lining cutting is constructed with inverted arch lining cutting on the outside of arch springing section, and to two arch springing sections outsides of construction molding Backfilled respectively in the arch of inverted arch lining cutting；
The quantity of the inverted arch of arch springing section described in step 3 backfill structure is two, two arch springing section inverted arch backfill structures It is located at the left and right sides of the medial support frame respectively；Each arch springing section inverted arch backfill structure is returned temporarily including debris Inverted arch backfill structure, the debris on the outside of structure and the arch springing section that is filled on the outside of arch springing section in inverted arch lining arch is filled out to backfill temporarily Structure filling is on the outside of the side supports frame and arch springing section on the outside of inverted arch lining cutting and arch springing section between inverted arch backfill structure；
Follow-up region of excavating is carried out in digging process from the front to the back in step 5, two debris are faced from the front to the back When backfill structure removed respectively；
During carrying out tunnel bottom inverted arch lining construction in step 6, distinguish from the front to the back along tunnel Longitudinal extending direction Synchronously construct to inverted arch lining cutting on the inside of two arch springing sections.
A kind of above-mentioned nine base tunnel construction methods of tunnel and Double side wall, it is characterized in that：Tunnel is carried out in step 1 tentatively to excavate When, first from top to bottom arch pilot tunnel is excavated, then from top to bottom to the left side wall pilot tunnel and the right side wall pilot tunnel point Do not excavated；
When being excavated in step 5 to follow-up excavation region, from top to bottom follow-up region of excavating is excavated.
The present invention has the following advantages compared with prior art：
1st, method and step is simple, design is reasonable and input construction cost is relatively low.
2nd, process step design is reasonable, is mainly tentatively excavated including tunnel, preliminary bracing construction and temporary supporting system are installed, arch Foot lining construction and the backfill of arch springing section inverted arch, temporary supporting system are removed and arch wall lining construction, tunnel subsequently excavate, tunnel bottom Portion's inverted arch lining construction and tunnel bottom inverted arch lining cutting backfill this seven construction procedures, and above-mentioned six construction procedures can same stepping OK, construction speed need to be only ensured, construction efficiency is high and construction quality is easy to ensure, work progress is safe and reliable.
3rd, used temporary supporting system is simple in structure, design is reasonable and sets up and dismounting is easy, using effect is good, real High with value, construction efficiency is high, and labor intensity is low, saving of work and time, including temporary support knot in multiple holes laid from the front to the back Structure, temporary support structure is mounted in a first branch steelframe that supporting is carried out to Tunnel in each hole；It is interim in each hole Supporting structure is fastenedly connected with the preliminary mounting bracket on the outside of it and is integrated, in each hole temporary support structure with Preliminary mounting bracket on the outside of it is laid on same tunnel cross-section, thus temporary support in each hole of the present invention Structure is installed in preliminary mounting bracket and is fastenedly connected with preliminary mounting bracket and is integrated, due to first branch steelframe be to Tunnel into The supporting construction of row preliminary bracing supporting, and all just branch steelframes in Tunnel are fastenedly connected and are integrated, so that this Temporary support structure can be fastenedly connected as an entirety in all holes of invention, and is used cooperatively with first branch steelframe, so as to Excavate shaping hole body and carry out supporting.As shown in the above, above-mentioned temporary supporting system is simple in structure, design is reasonable and dismounting letter Just, using effect is good, can be engaged with Tunnel structure and carry out supporting to having excavated shaping hole body, and can be to subsequently opening Dig region and carry out effective support.
4th, use the structure of temporary support structure in hole is simple, design rationally and dismounting is easy, using effect is good, including Two symmetrical prop up are supported in the upper of follow-up excavation area top arranged on the follow-up side supports frame excavated at left and right sides of region, one Portion's supporting rack, the upper support structure being supported between upper support shelf top and the just preliminary mounting bracket of branch steelframe and two The side supports structure being respectively supported between two side supports framves and preliminary mounting bracket, upper support shelf and two sidepiece branch Support forms medial support frame, and medial support frame is supported in follow-up excavation areas outside, installs simplicity and support is firm, and Effective support can be carried out to follow-up region of excavating, it is ensured that work progress is safe and reliable；Meanwhile pass through upper support structure and two The preliminary mounting bracket of side supports structure and first branch steelframe, which is fastenedly connected, to be integrated, and can further improve temporary support structure in hole Overall stability, and due to being only completed the installation process of preliminary mounting bracket in first branch steelframe at this time, bottom link is also not Installation, thus just branch steelframe is unclosed at this time, and preliminary mounting bracket effectively can be supported using temporary support structure in hole, from And the supporting effect of preliminary mounting bracket can be effectively ensured, temporary support structure and first branch steelframe are with the use of can be to having excavated in hole It is molded hole body (i.e. the preliminary of Tunnel excavates hole body) and carries out effective support, supporting intensity is high, can ensure that Tunnel is imitated Fruit.
5th, used portable lining construction apparatus structure is simple, design is reasonable and input cost is relatively low, uses operation Easy and using effect is good, can be moved back and forth in preliminary excavate in the body of hole of Tunnel, so as to simplicity, be rapidly completed tunnel Lining construction process.
6th, used traveling centering is simple in structure, design is reasonable and it is easy to set up, flexibly, and using effect is good, bag Include the upper falsework being erected in the pilot tunnel of arch and two are erected on left side wall pilot tunnel and the sidepiece in right side wall pilot tunnel respectively Scaffold, upper falsework bottom is equipped with the top running gear that can be translated on follow-up excavation region, each sidepiece foot Hand cradle bottom is respectively arranged with the lower running system that can be translated in arch springing section inverted arch backfill structure.On in traveling centering Portion's scaffold and sidepiece scaffold are separately set up, and set up process simplicity, (are specifically preliminary excavation hole from Tunnel Body) inner space limitation, can meet the use demand in different cross section Tunnel.
7th, used template assembly includes the arch forming panel and two difference that molding construction is carried out to Arch lining Two side wall linings are carried out with the abutment wall forming panel of molding construction, two abutment wall forming panels are symmetrically laid in arch shaping mould Below the left and right sides of plate；Arch forming panel is supported in above upper falsework, and two abutment wall forming panels are respectively supported at On the outside of two sidepiece scaffolds, formwork erection is easy and support is firm.
8th, used portable lining construction device occupation mode is flexible, both can be to upper side wall lining and lower abutment wall Lining cutting is synchronously constructed, and can also be constructed respectively to upper side wall lining and lower side wall lining.
9th, using effect is good, and energy is easy, is rapidly completed nine base tunnel work progress of tunnel and Double side wall, and construction efficiency is high, and Construction risk is small, and difficulty of construction is low.
In conclusion the method for the present invention step is simple, design is reasonable and easy construction, using effect are good, can be easy, quick Tunnel and Double nine base tunnel work progress of side wall are completed, and work progress is safe and reliable.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the method flow block diagram of the present invention.
Fig. 2 is the structure diagram of construction tunnel of the present invention.
Fig. 3 is the layout position illustration of temporary support structure in hole of the present invention.
Fig. 4 is the holding state schematic diagram of temporary support structure in hole of the present invention.
Fig. 5 is the position relationship schematic diagram of temporary support structure in branch steelframe, secondary lining and hole at the beginning of the present invention.
Fig. 6 is the structure diagram of the portable lining construction device of the present invention.
Fig. 7 is the use state reference chart of the portable lining construction device of the present invention.
Fig. 8 is the structure diagram of top traveling wheel of the present invention and top translation track.
Fig. 9 is the Construction State schematic diagram of the present invention.
Description of reference numerals:
1-upper lateral part pilot tunnel；2-middle sidepiece pilot tunnel；3-following side pilot tunnel；
4-go up cross-brace beam；5-middle cross-brace beam；6-subsequently excavate region；
7-arch pilot tunnel；8-middle part pilot tunnel；9-get out of a predicament or an embarrassing situation and excavate pilot tunnel；
9-1-Tunnel；10-1-bottom link；10-2-arch springing steelframe；
10-3-steel arch-shelf；11-1-side supports frame；11-2-upper support shelf；
11-3-upper support column；Inverted arch backfills structure on the outside of 12-1-arch springing section；
12-2-debris backfills structure temporarily；13-1-arch springing lining cutting；
13-2-tunnel bottom inverted arch lining cutting；13-3-Arch lining；13-4-lower side wall lining；
13-5-upper side wall lining；14-1-upper falsework；14-2-sidepiece scaffold；
14-3-lateral connection frame；15-1-arch forming panel；
15-2-lower abutment wall forming panel；15-3-upper abutment wall forming panel；
16-1-upper mould supporting rack；16-2-lower sidewall template supporting rack；
16-3-upper sidewall template supporting rack；17-upper backup pad；
Inverted arch lining cutting on the outside of 17-1-arch springing section；
Inverted arch lining cutting on the inside of 17-2-arch springing section；18-top translation track；
19-top traveling wheel；20-lower part translation track；21-lower running wheel；
22-lower upper backup pad；23-inverted arch backfills structure.
Embodiment
Nine base tunnel construction methods of a kind of tunnel and Double side wall as shown in Figure 1, comprise the following steps：
Step 1: tunnel tentatively excavates：Institute's construction tunnel is tentatively opened from the front to the back along tunnel Longitudinal extending direction Dig, and obtain the preliminary excavation hole body for excavating and completing；
With reference to Fig. 2 and Fig. 9, the Tunnel 9-1 of institute's construction tunnel includes left side wall pilot tunnel, right side wall pilot tunnel, top core Native region pilot tunnel and getting out of a predicament or an embarrassing situation immediately below the top Core Soil region pilot tunnel excavate pilot tunnel 9, the left side wall pilot tunnel Laid with the right side wall pilot tunnel in symmetrical, the top Core Soil region pilot tunnel and excavation pilot tunnel 9 of getting out of a predicament or an embarrassing situation are respectively positioned on described Between left side wall pilot tunnel and right side wall pilot tunnel；The top Core Soil region pilot tunnel is divided into arch pilot tunnel 7 and positioned at arch pilot tunnel 7 The middle part pilot tunnel 8 of underface；The left side wall pilot tunnel is from top to bottom divided into upper lateral part pilot tunnel 1, middle sidepiece with right side wall pilot tunnel Pilot tunnel 2 and following side pilot tunnel 3；The preliminary hole body that excavates is by the left side wall pilot tunnel, the right side wall pilot tunnel and arch pilot tunnel 7 Form, the region of side is subsequently to excavate region 6 in the preliminary excavation hole body in the Tunnel 9-1；
The secondary liner structure of the Tunnel 9-1 be to Tunnel 9-1 carry out tunneling boring supporting concrete lining, institute Stating secondary liner structure includes carrying out the arch wall of Tunnel 9-1 the arch wall lining cutting of supporting, Tunnel 9-1 bottoms is propped up The tunnel bottom inverted arch lining cutting 13-2 of shield and left and right two are connected to the arch wall lining cutting and tunnel bottom inverted arch lining cutting 13- Arch springing lining cutting 13-1, two arch springing lining cutting 13-1 between 2 are symmetrically laid in the left and right of tunnel bottom inverted arch lining cutting 13-2 Both sides；The arch springing lining cutting 13-1 is included positioned at the side wall bottom lining cutting of the arch wall lining cutting bottom and positioned at tunnel bottom inverted arch Arch springing section inverted arch lining cutting on the outside of lining cutting 13-2；
Step 2: preliminary bracing construction and temporary supporting system installation：Carried out in step 1 in the preliminary digging process in tunnel, Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction, obtains the tunnel of construction molding Road preliminary bracing structure；Again temporary support is set up on the inside of the Tunnel structure for completion of having constructed from the front to the back System, the temporary supporting system are erected between the Tunnel structure and follow-up excavation region 6；
Step 3: arch springing lining construction and the backfill of arch springing section inverted arch：Along tunnel Longitudinal extending direction from the front to the back to two The arch springing lining cutting 13-1 constructs respectively, and to the arch of arch springing section inverted arch lining cutting described in two arch springing lining cutting 13-1 Inside backfilled, obtain arch springing section inverted arch backfill structure；
Step 4: temporary supporting system is removed and arch wall lining construction：Along tunnel Longitudinal extending direction from the front to the back to step Temporary supporting system is removed described in rapid two, and using portable lining construction device from the front to the back to the arch wall lining cutting Construct, the arch wall lining cutting of construction molding is fastenedly connected with two in the step 3 arch springing lining cutting 13-1 and is integrated；
As shown in Figure 6, Figure 7, the portable lining construction device is included before being carried out in the preliminary excavation hole body The portable full hall scaffold that moves afterwards and carried out on the portable full hall scaffold and to the arch wall lining cutting into The template assembly of type construction, the arch wall lining cutting include carrying out Tunnel 9-1 arch the Arch lining 13-3 of supporting and two The side wall lining of supporting is carried out to the left and right sides abutment wall of Tunnel 9-1 respectively, two side wall linings are symmetrically laid in arch Below the left and right sides of portion's lining cutting 13-3；The movable type full hall scaffold includes the top foot hand being erected in arch pilot tunnel 7 Frame 14-1 and two are erected on the left side wall pilot tunnel and the sidepiece scaffold 14-2 in the right side wall pilot tunnel respectively, it is described on Portion scaffold 14-1 bottoms are equipped with the top running gear that can be translated in the temporary supporting system, each sidepiece Scaffold 14-2 bottoms are respectively arranged with the lower running system that can be translated in arch springing section inverted arch backfill structure；The mould Plate assembly is included to the arch forming panel 15-1 of Arch lining 13-3 progress molding constructions and two respectively to two sides Wall lining builds the abutment wall forming panel for carrying out molding construction, and two abutment wall forming panels are symmetrically laid in arch forming panel Below the left and right sides of 15-1；The arch forming panel 15-1 is supported in above upper falsework 14-1, two abutment walls Forming panel is respectively supported on the outside of two sidepiece scaffold 14-2；
Step 5: tunnel subsequently excavates：Follow-up region 6 of excavating is opened from the front to the back along tunnel Longitudinal extending direction Dig, obtain to excavate the middle part pilot tunnel 8 formed and get out of a predicament or an embarrassing situation and excavate pilot tunnel 9；
Step 6: tunnel bottom inverted arch lining construction：Along tunnel Longitudinal extending direction from the front to the back to tunnel bottom inverted arch Lining cutting 13-2 constructs, the tunnel bottom inverted arch lining cutting 13-2 and two arch springing lining cutting 13-1 in step 3 of construction molding It is fastenedly connected and is integrated；
Step 7: the lining cutting of tunnel bottom inverted arch backfills：To being backfilled in the arch of tunnel bottom inverted arch lining cutting 13-2.
In the present embodiment, the tunnel bottom inverted arch backfill structure 23 is concrete structure.
Thus, 9 pilot tunnels are included on the excavated section of institute's construction tunnel, the excavation construction method of institute's construction tunnel is bilateral Wall pilot tunnel method, and using nine excavations, also referred to as nine pilot tunnel methods of double side wall.
In the present embodiment, the length of upper falsework 14-1 described in step 4 and two sidepiece scaffold 14-2 are equal For 9m~12m.
In the present embodiment, Tunnel structure described in step 2 include it is multiple along tunnel Longitudinal extending direction by rear Lay forward and the first branch steelframe of tunneling boring supporting is carried out to Tunnel 9-1, the just branch steelframe is complete to Tunnel 9-1 progress The supporting steel frame of section supporting, the just branch steelframe include on the inside of the arch wall lining cutting and to the arch wall of Tunnel 9-1 into The steel arch-shelf 10-3 of row supporting, the bottom link for carrying out below the inverted arch lining cutting and to Tunnel 9-1 bottoms supporting 10-1 and left and right two are connected to the arch springing steelframe 10-2 between steel arch-shelf 10-3 and bottom link 10-1, described in two Arch springing steelframe 10-2 is symmetrically laid in the left and right sides of bottom link 10-1, steel arch-shelf 10-3 and two arch springing steelframes The preliminary mounting bracket of the 10-2 compositions just branch steelframe；
Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction in step 2 When, the preliminary mounting bracket of multiple just branch steelframes is installed respectively from the front to the back；Multiple just branch steelframes it is described The longitudinal connecting member laid between preliminary mounting bracket by multiple tracks along tunnel Longitudinal extending direction, which is fastenedly connected, to be integrated；
Carried out in step 5 in the follow-up digging process in tunnel, from the front to the back to the bottom link of multiple just branch steelframes 10-1 is installed respectively, and installed bottom link 10-1 is connected with the preliminary mounting bracket fastening that installation is complete It is connected in one.
In the present embodiment, the longitudinal connecting member is longitudinally connected reinforcing bar.
In the present embodiment, temporary supporting system described in step 2 includes temporary support structure in multiple holes, multiple described Temporary support structure is separately mounted in the preliminary mounting bracket of multiple just branch steelframes in hole, interim in each hole Supporting structure is fastenedly connected with the preliminary mounting bracket on the outside of it and is integrated, temporary support structure in each hole It is laid in the preliminary mounting bracket on the outside of it on the same tunnel cross-section of institute's construction tunnel；
As shown in Fig. 3, Fig. 4 and Fig. 5, temporary support structure is arranged on follow-up excavation region including two symmetrical branch in the hole The side supports frame 11-1 of 6 left and right sides, a upper support shelf 11-2 for being supported in follow-up excavation 6 top of region, be supported in Upper support structure above upper support shelf 11-2 between the preliminary mounting bracket and two are respectively supported at described in two Side supports structure between side supports frame 11-1 and the preliminary mounting bracket, two side supports structures are located at respectively In the left side wall pilot tunnel and the right side wall pilot tunnel, the upper support structure is located in arch pilot tunnel 7, the upper support Frame 11-2 and two side supports frame 11-1 compositions medial support frames, the medial support frame, the upper support Structure and two side supports structures are laid on same vertical plane.
In the present embodiment, temporary supporting system top described in step 2 is provided with top vertical shift platform, and the top is indulged Moving tiling on platform has the upper backup pad 17 being supported to upper falsework 14-1, is set from left to right on the upper backup pad 17 It is equipped with multiple top translation tracks 18 laid along tunnel Longitudinal extending direction；
Top running gear described in step 4 include it is multigroup moved back and forth respectively in top translation track 18 it is upper Portion's traveling wheel 19, top traveling wheel 19 described in every group include it is multiple from the front to the back be installed on upper falsework 14-1 bottoms and The top traveling wheel 19 being installed on the same top translation track 18；
The quantity of the inverted arch of arch springing section described in step 3 backfill structure is two, two arch springing section inverted arch backfill structures It is located at the left and right sides of the medial support frame respectively；Left and right two is respectively arranged with each arch springing section inverted arch backfill structure The lower part translation track 20 laid along tunnel Longitudinal extending direction；
Lower running system described in step 4 includes two groups of left and right to carry out in two lower part translation tracks 20 respectively The lower running wheel 21 of back-and-forth motion, lower running wheel 21 described in every group are installed on sidepiece scaffold from the front to the back including multiple 14-2 bottoms and the lower running wheel 21 being mounted on the same lower part translation track 20.
Meanwhile it is both provided with what is be supported for sidepiece scaffold 14-2 in two arch springing section inverted arch backfill structures 12 Lower upper backup pad 22, the lower part translation track 11 of left and right two are installed on lower upper backup pad 22.
In the present embodiment, 4 top translation tracks 18 are provided with the upper backup pad 17 from left to right.4 institutes Top translation track 18 is stated in uniformly distributed.
In actual use, the structure snd size all same of multigroup top traveling wheel 19, and lower running described in two groups The structure snd size all same of wheel 21.
In the present embodiment, the spacing between the two neighboring top translation track 18 is 420cm, top row described in every group The spacing walked in wheel 19 between the front and rear two neighboring top traveling wheel 19 is 80cm.Two lower part translation tracks 20 it Between spacing be 420cm, the spacing in lower running wheel 21 described in every group between the front and rear two neighboring lower running wheel 21 For 240cm.
During practice of construction, can according to specific needs, to the spacing between the two neighboring top translation track 18, Spacing between two lower part translation tracks 20, the front and rear two neighboring top row in top traveling wheel 19 described in every group Between walking described in spacing between wheel 19 and every group in lower running wheel 21 between the front and rear two neighboring lower running wheel 21 Away from adjusting accordingly respectively.
During practice of construction, can according to specific needs, to the quantity of set top translation track 18 on upper backup pad 17 with And the installation position of each top translation track 18 adjusts accordingly respectively.
As shown in figure 8, the top translation track 18 and lower part translation track 20 are shaped steel track, the shaped steel track Including the channel steel together and the angle steel for being laid in the channel steel middle inside, the top traveling wheel 19 and lower running wheel 21 be the steel wheel that can be moved back and forth along the angle steel.
, can according to specific needs, to upper falsework 14-1's and two sidepiece scaffold 14-2 during practice of construction Length adjusts accordingly.
In the present embodiment, Tunnel structure described in step 2, which further includes, props up the arch wall of Tunnel 9-1 The arch wall preliminary bracing structure of shield, the arch wall preliminary bracing structure are bolt-mesh-spurting supporting structure；
Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction in step 2, First the preliminary mounting bracket of multiple just branch steelframes is installed respectively from the front to the back, then using anchor net unit support Method carries out supporting to the arch wall of Tunnel 9-1, obtains the arch wall preliminary bracing structure of construction molding, and makes described preliminary Mounting bracket and the longitudinal connecting member are anchored in the arch wall preliminary bracing structure.
When temporary supporting system dismounting and arch wall lining construction are carried out in the present embodiment, in step 4, first along tunnel longitudinal direction Extending direction is from the front to the back to the upper support structure in temporary support structure in the hole and two side supports Structure is removed respectively, then is constructed from the front to the back to the arch wall lining cutting using portable lining construction device, then The medial support frame in temporary support structure in the hole is removed respectively from the front to the back.
In the present embodiment, upper falsework 14-1 described in step 4 and two sidepiece scaffold 14-2 are by steel Pipe sets up the scaffold to be formed；
Two sidepiece scaffold 14-2 are laid in symmetrical；The left and right sides of the upper falsework 14-1 and two institutes State and be fastenedly connected by transverse connection structure between sidepiece scaffold 14-2 tops, the transverse connection structure includes more A lateral connection frame 14-3 laid from the front to the back；
The upper mould supporting rack being supported to arch forming panel 15-1 is provided with the upper falsework 14-1 The side template being supported to the abutment wall forming panel is both provided with the outside of 16-1, two sidepiece scaffold 14-2 Supporting rack.
Also, in the upper falsework 14-1 and two sidepiece scaffold 14-2 between adjacent two steel pipes It is attached by steel tube fastener.
In the present embodiment, the inverted arch lining cutting of arch springing section described in step 1 is divided into inverted arch lining cutting 17-1 and position on the outside of arch springing section The inverted arch lining cutting 17-2 on the inside of the arch springing section on the outside of arch springing section on the inside of inverted arch lining cutting 17-1, the arch springing section inner side inverted arch lining cutting 17-2 is connected on the outside of arch springing section between inverted arch lining cutting 17-1 and tunnel bottom inverted arch lining cutting 13-2；
When arch springing lining construction and the backfill construction of arch springing section inverted arch are carried out in step 3, first to two arch springing lining cutting The side wall bottom lining cutting of 13-1 is constructed with inverted arch lining cutting 17-1 on the outside of arch springing section, and to described in two of construction molding Backfilled respectively in the arch of inverted arch lining cutting 17-1 on the outside of arch springing section；
The quantity of the inverted arch of arch springing section described in step 3 backfill structure is two, two arch springing section inverted arch backfill structures It is located at the left and right sides of the medial support frame respectively；Each arch springing section inverted arch backfill structure is returned temporarily including debris Fill out structure 12-2 and be filled in inverted arch backfill structure 12-1 on the outside of the arch springing section on the outside of arch springing section in inverted arch lining cutting 17-1 arches, it is described Debris backfills structure 12-2 and is filled in side supports frame 11-1 and inverted arch lining cutting 17-1 on the outside of arch springing section and arch springing section outside temporarily Between inverted arch backfill structure 12-1；
Follow-up region 6 of excavating is carried out in digging process from the front to the back in step 5, from the front to the back to two debris Interim backfill structure 12-2 is removed respectively；
During carrying out tunnel bottom inverted arch lining construction in step 6, distinguish from the front to the back along tunnel Longitudinal extending direction Synchronously construct to inverted arch lining cutting 17-2 on the inside of two arch springing sections.
It is synchronous in two arch springing sections when tunnel bottom inverted arch lining cutting backfill is carried out in the present embodiment, in step 7 Backfilled in the arch of side inverted arch lining cutting 17-2, obtain the inverted arch backfill structure 23 of construction molding.
In the present embodiment, inverted arch backfill structure 12-1 is concrete structure on the outside of the arch springing section.
In the present embodiment, the left and right sides wall that region 6 is subsequently excavated described in step 1 is curved wall；
The 11-1 of side supports frame described in step 3 and upper support shelf 11-2 is shape steel bracket, the side supports frame 11-1 is curved support frame.
In actual use, upper support structure described in step 3 includes multiple upper support columns laid from left to right 11-3, the bottom of the upper support column 11-3 are supported on upper support shelf 11-2 and are supported at the top of it described preliminary On mounting bracket.Also, the top of the upper support column 11-3 is supported in the arch of steel arch-shelf 10-3.
In the present embodiment, the upper support structure includes three upper support column 11-3, three tops Support column 11-3 includes a midfoot support post being supported in above in the middle part of upper support shelf 11-2 and two are symmetrically laid in institute The side supports column at left and right sides of midfoot support post is stated, two side supports columns are respectively supported at upper support shelf 11-2's Above the left and right sides；
The midfoot support post is vertical support column；Two side supports columns are curved support column and the two difference Be supported in above two side supports frame 11-1, each side supports frame 11-1 with the side of being supported on The side supports column connects to form an arc bracket.
In actual use, can according to specific needs, to included upper support column 11-3 in the upper support structure The installation position of quantity and each upper support column 11-3 adjust accordingly respectively.
Each side supports structure includes the cross-brace beam that multiple tracks is from top to bottom laid, the cross-brace beam In horizontal layout, the inside and outside both ends of the cross-brace beam be respectively supported at side supports frame 11-1 and the preliminary mounting bracket it Between.Also, the outer end of the cross-brace beam is supported in steel arch-shelf 10-3 sidepieces.
Each side supports structure includes twice cross-brace beam, and the cross-brace beam is in horizontal layout, institute The inside and outside both ends for stating cross-brace beam are respectively supported between side supports frame 11-1 and the preliminary mounting bracket.
Cross-brace beam described in twice is respectively positioned at the upper cross-brace beam 4 of 1 bottom of upper lateral part pilot tunnel and positioned at middle side The middle cross-brace beam 5 of 2 bottom of portion's pilot tunnel.
In actual use, can according to specific needs, to the number of cross-brace beam included by each side supports structure The installation position of amount and each road cross-brace beam adjusts accordingly respectively.
In the present embodiment, the upper support column 11-3 is I-steel.The cross-brace beam is I-steel.Also, institute It is I-steel to state side supports frame 11-1 and upper support shelf 11-2.
During actual processing, the upper support column 11-3, the cross-brace beam, side supports frame 11-1 and upper support Frame 11-2 can also use other types of shaped steel rod piece.
In the present embodiment, the side wall lining is divided into lower side wall lining 13-4 and above lower side wall lining 13-4 Upper side wall lining 13-5, the junction between the lower side wall lining 13-4 and upper side wall lining 13-5 are located at middle sidepiece pilot tunnel 2 It is interior；
The abutment wall forming panel includes the lower abutment wall forming panel 15-2 that molding construction is carried out to lower side wall lining 13-4 With the upper abutment wall forming panel 15-3 that molding construction is carried out to upper side wall lining 13-5, the upper abutment wall forming panel 15-3 is located at Above lower abutment wall forming panel 15-2.
In the present embodiment, the side template supporting rack includes the lower abutment wall being supported to lower abutment wall forming panel 15-2 The formwork-support 16-2 and upper sidewall template supporting rack 16-3 being supported to upper abutment wall forming panel 15-3.
In the present embodiment, when progress tunnel tentatively excavates in step 1, first from top to bottom arch pilot tunnel 7 is excavated, From top to bottom the left side wall pilot tunnel and the right side wall pilot tunnel are excavated respectively again；
When being excavated in step 5 to follow-up excavation region 6, from top to bottom follow-up region 6 of excavating is excavated.
In the present embodiment, when constructing in step 4 to the arch wall lining cutting, first under two side wall linings Side wall lining 13-4 constructs, then constructs to the upper side wall lining 13-5 of two side wall linings, then to arch Lining cutting 13-3 constructs.
During practice of construction, can both construction be synchronized to lower side wall lining 13-4 and upper side wall lining 13-5, can also Construct to lower side wall lining 13-4 and upper side wall lining 13-5, first lower side wall lining 13-4 is applied respectively specifically Work, then construct to upper side wall lining 13-5.
In the present embodiment, the width of the Tunnel 9-1-1 is 22.8m and its height is 19m, the thickness of the secondary lining Spend for 80cm and its use C45P10 water-proof concretes, inverted arch backfill structure 12-1 is commonly mixed using C20 on the outside of the arch springing section Solidifying soil.
During practice of construction, the longitudinal length of the template assembly is 7.2m~8.4m.
In actual use, the length of the upper falsework 14-1 and two sidepiece scaffold 14-2 be 9m~ 12m。
In the present embodiment, the length of the upper falsework 14-1 is 9.6m, is highly 2.4m, width 10.2m；It is described The vertical total departure step pitch of vertical steel pipe is 60cm in upper falsework 14-1；Meanwhile set on upper falsework 14-1 perpendicular To bridging and horizontal cross brace.
The length of the sidepiece scaffold 14-2 is 9.6m, is highly 22.8m, width 4.2m, meanwhile, in sidepiece foot hand Vertical bridging and horizontal cross brace are set on frame 14-2.
In the present embodiment, the diameter of steel tube that upper falsework 14-1 and sidepiece the scaffold 14-2 is used is Φ 48mm And its wall thickness is 3.5mm.
, can according to specific needs, to length, the height of upper falsework 14-1 and sidepiece scaffold 14-2 during practice of construction Adjusted accordingly respectively with the size of width and used steel pipe.
During in actual use, the uniform force and speed of advancement one in each region in two sidepiece scaffold 14-2 Cause.
In the present embodiment, preliminary bracing construction and temporary support in the preliminary digging process in tunnel, step 2 in step 1 It is that temporary supporting system is removed in arch springing lining construction and arch springing section inverted arch backfilling process, step 4 in installation process, step 3 And tunnel bottom inverted arch lining construction process in the follow-up digging process in tunnel, step 6 in arch wall lining construction process, step 5 It can synchronously construct with tunnel bottom inverted arch lining cutting backfilling process in step 7, only need to ensure the construction speed of each step not With.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention Any simple modification, change and the equivalent structure change that technical spirit makees above example, still fall within skill of the present invention In the protection domain of art scheme.

Claims (10)

1. a kind of nine base tunnel construction methods of tunnel and Double side wall, it is characterised in that this method comprises the following steps：
Step 1: tunnel tentatively excavates：Institute's construction tunnel is tentatively excavated from the front to the back along tunnel Longitudinal extending direction, and Obtain the preliminary excavation hole body for excavating and completing；
The Tunnel (9-1) of institute's construction tunnel includes left side wall pilot tunnel, right side wall pilot tunnel, top Core Soil region pilot tunnel and is located at Getting out of a predicament or an embarrassing situation immediately below the top Core Soil region pilot tunnel excavates pilot tunnel (9), and the left side wall pilot tunnel is led with the right side wall Hole is laid in symmetrical, the top Core Soil region pilot tunnel and getting out of a predicament or an embarrassing situation excavate pilot tunnel (9) be respectively positioned on the left side wall pilot tunnel and Between right side wall pilot tunnel；The top Core Soil region pilot tunnel is divided into arch pilot tunnel (7) and immediately below arch pilot tunnel (7) Middle part pilot tunnel (8)；The left side wall pilot tunnel is from top to bottom divided into upper lateral part pilot tunnel (1), middle sidepiece pilot tunnel with right side wall pilot tunnel (2) and following side pilot tunnel (3)；The preliminary hole body that excavates is by the left side wall pilot tunnel, the right side wall pilot tunnel and arch pilot tunnel (7) form, region (6) are excavated positioned at the preliminary region for excavating side in the body of hole to be follow-up in the Tunnel (9-1)；
The secondary liner structure of the Tunnel (9-1) be to Tunnel (9-1) carry out tunneling boring supporting concrete lining, institute Stating secondary liner structure includes carrying out the arch wall of Tunnel (9-1) the arch wall lining cutting of supporting, Tunnel (9-1) bottom is carried out The tunnel bottom inverted arch lining cutting (13-2) of supporting and left and right two are connected to the arch wall lining cutting and are served as a contrast with tunnel bottom inverted arch The arch springing lining cutting (13-1) between (13-2) is built, two arch springing lining cutting (13-1) are symmetrically laid in tunnel bottom inverted arch lining cutting The left and right sides of (13-2)；The arch springing lining cutting (13-1) includes the lining cutting of side wall bottom and position positioned at the arch wall lining cutting bottom Arch springing section inverted arch lining cutting on the outside of tunnel bottom inverted arch lining cutting (13-2)；
Step 2: preliminary bracing construction and temporary supporting system installation：Carried out in step 1 in the preliminary digging process in tunnel, along tunnel Road Longitudinal extending direction carries out preliminary bracing construction to the preliminary hole body that excavates from the front to the back, at the beginning of obtaining the tunnel of construction molding Phase supporting construction；Temporary supporting system is set up on the inside of the Tunnel structure for completion of having constructed from the front to the back again, The temporary supporting system is erected between the Tunnel structure and follow-up excavation region (6)；
Step 3: arch springing lining construction and the backfill of arch springing section inverted arch：Along tunnel Longitudinal extending direction from the front to the back to described in two Arch springing lining cutting (13-1) is constructed respectively, and to the arch of arch springing section inverted arch lining cutting described in two arch springing lining cutting (13-1) Inside backfilled, obtain arch springing section inverted arch backfill structure；
Step 4: temporary supporting system is removed and arch wall lining construction：Along tunnel Longitudinal extending direction from the front to the back to step 2 Described in temporary supporting system removed, and the arch wall lining cutting is carried out from the front to the back using portable lining construction device Construction, the arch wall lining cutting of construction molding are fastenedly connected with two in the step 3 arch springing lining cutting (13-1) and are integrated；
The movable type that the movable type lining construction device includes to be moved back and forth in the preliminary excavation hole body expires hall Scaffold and the template assembly that molding construction is carried out on the portable full hall scaffold and to the arch wall lining cutting, institute Stating arch wall lining cutting is included to the Arch lining (13-3) of Tunnel (9-1) arch progress supporting and two respectively to Tunnel (9- 1) left and right sides abutment wall carries out the side wall lining of supporting, and two side wall linings are symmetrically laid in Arch lining (13-3) Below the left and right sides；The movable type full hall scaffold include being erected on upper falsework (14-1) in arch pilot tunnel (7) and Two are erected on the left side wall pilot tunnel and the sidepiece scaffold (14-2) in the right side wall pilot tunnel, the top foot hand respectively Frame (14-1) bottom is equipped with the top running gear that can be translated in the temporary supporting system, each sidepiece foot hand Frame (14-2) bottom is respectively arranged with the lower running system that can be translated in arch springing section inverted arch backfill structure；The template Assembly is included to the arch forming panel (15-1) of Arch lining (13-3) progress molding construction and two respectively to described in two Side wall lining carries out the abutment wall forming panel of molding construction, and two abutment wall forming panels are symmetrically laid in arch forming panel Below the left and right sides of (15-1)；The arch forming panel (15-1) is supported in above upper falsework (14-1), two institutes Abutment wall forming panel is stated to be respectively supported on the outside of two sidepiece scaffolds (14-2)；
Step 5: tunnel subsequently excavates：Follow-up excavate region (6) are excavated from the front to the back along tunnel Longitudinal extending direction, Obtain to excavate the middle part pilot tunnel (8) formed and get out of a predicament or an embarrassing situation and excavate pilot tunnel (9)；
Step 6: tunnel bottom inverted arch lining construction：Along tunnel Longitudinal extending direction from the front to the back to tunnel bottom inverted arch lining cutting (13-2) constructs, tunnel bottom inverted arch lining cutting (13-2) and the two arch springing lining cutting (13- in step 3 of construction molding 1) it is fastenedly connected and is integrated；
Step 7: the lining cutting of tunnel bottom inverted arch backfills：To being backfilled in the arch of tunnel bottom inverted arch lining cutting (13-2).
A kind of 2. nine base tunnel construction methods of tunnel and Double side wall described in accordance with the claim 1, it is characterised in that：Institute in step 4 The length for stating upper falsework (14-1) and two sidepiece scaffolds (14-2) is 9m~12m.
3. according to nine base tunnel construction methods of a kind of tunnel and Double side wall described in claim 1 or 2, it is characterised in that：Step 2 Described in Tunnel structure include it is multiple laid from the front to the back along tunnel Longitudinal extending direction and to Tunnel (9-1) into The first branch steelframe of row tunneling boring supporting, the just branch steelframe are the supporting steel frame that tunneling boring supporting is carried out to Tunnel (9-1), institute State the steel arch-shelf (10- for the arch wall progress supporting that just branch steelframe is included on the inside of the arch wall lining cutting and to Tunnel (9-1) 3) bottom link (10-1) and the left and right two of supporting, are carried out below the inverted arch lining cutting and to Tunnel (9-1) bottom A arch springing steelframe (10-2) being connected between steel arch-shelf (10-3) and bottom link (10-1), two arch springing steel Frame (10-2) is symmetrically laid in the left and right sides of bottom link (10-1), steel arch-shelf (10-3) and two arch springing steelframes The preliminary mounting bracket of (10-2) composition just branch steelframe；
When carrying out preliminary bracing construction to the preliminary excavation hole body from the front to the back along tunnel Longitudinal extending direction in step 2, by The preliminary mounting bracket of multiple just branch steelframes is installed respectively before backward；The preliminary peace of multiple just branch steelframes The longitudinal connecting member laid between shelving by multiple tracks along tunnel Longitudinal extending direction, which is fastenedly connected, to be integrated；
Carried out in step 5 in the follow-up digging process in tunnel, from the front to the back to the bottom link (10- of multiple just branch steelframes 1) installed respectively, and installed bottom link (10-1) is connected with the preliminary mounting bracket fastening that installation is complete It is connected in one.
A kind of 4. nine base tunnel construction methods of tunnel and Double side wall described in accordance with the claim 3, it is characterised in that：Institute in step 2 Stating temporary supporting system includes temporary support structure in multiple holes, and temporary support structure is separately mounted to multiple in multiple holes In the preliminary mounting bracket of the just branch steelframe, in each hole temporary support structure with the outside of it is described just Step mounting bracket is fastenedly connected and is integrated, in each hole temporary support structure with the preliminary mounting bracket on the outside of it It is laid on the same tunnel cross-section of institute's construction tunnel；
Temporary support structure includes two symmetrical branch arranged on the follow-up side supports frame excavated at left and right sides of region (6) in the hole (11-1), a upper support shelf (11-2) for being supported in follow-up excavation region (6) top, be supported in upper support shelf (11-2) Upper support structure between top and the preliminary mounting bracket and two are respectively supported at two side supports frame (11- 1) the side supports structure between the preliminary mounting bracket, two side supports structures are led positioned at the left side wall respectively In hole and the right side wall pilot tunnel, the upper support structure is located in arch pilot tunnel (7), the upper support shelf (11-2) and The two side supports framves (11-1) composition medial support frames, the medial support frame, the upper support structure and Two side supports structures are laid on same vertical plane.
A kind of 5. nine base tunnel construction methods of tunnel and Double side wall described in accordance with the claim 3, it is characterised in that：Institute in step 2 State Tunnel structure and further include the arch wall preliminary bracing structure that supporting is carried out to the arch wall of Tunnel (9-1), the arch Wall preliminary bracing structure is bolt-mesh-spurting supporting structure；
Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction in step 2, first by The preliminary mounting bracket of multiple just branch steelframes is installed respectively before backward, then using anchor net unit support method Supporting is carried out to the arch wall of Tunnel (9-1), obtains the arch wall preliminary bracing structure of construction molding, and makes the preliminary peace Shelve and be anchored in the arch wall preliminary bracing structure with the longitudinal connecting member.
6. according to nine base tunnel construction methods of a kind of tunnel and Double side wall described in claim 4, it is characterised in that：In step 4 into When the dismounting of row temporary supporting system and arch wall lining construction, first along tunnel Longitudinal extending direction from the front to the back to interim in the hole The upper support structure and two side supports structures in supporting structure are removed respectively, then using portable lining Build constructing device from the front to the back to construct to the arch wall lining cutting, then from the front to the back in temporary support structure in the hole The medial support frame removed respectively.
7. according to nine base tunnel construction methods of a kind of tunnel and Double side wall described in claim 4, it is characterised in that：Institute in step 2 State temporary supporting system top and be provided with top vertical shift platform, tiling on the top vertical shift platform has to upper falsework (14- 1) upper backup pad (17) being supported, is provided with the upper backup pad (17) multiple along tunnel Longitudinal extending side from left to right To the top translation track (18) of laying；
Top running gear described in step 4 includes multigroup respectively on the top that top translation track (18) is moved back and forth Traveling wheel (19), top traveling wheel (19) described in every group are installed on upper falsework (14-1) bottom from the front to the back including multiple And it is mounted on the top traveling wheel (19) on the same top translation track (18)；
The quantity of the inverted arch of arch springing section described in step 3 backfill structure is two, two arch springing section inverted arch backfill structure difference Positioned at the left and right sides of the medial support frame；Left and right two is respectively arranged with each arch springing section inverted arch backfill structure along tunnel The lower part translation track (20) that road Longitudinal extending direction is laid；
Lower running system described in step 4 includes two groups of left and right respectively before two lower part translation tracks (20) carry out The lower running wheel (21) moved afterwards, lower running wheel (21) described in every group are installed on sidepiece foot hand from the front to the back including multiple Frame (14-2) bottom and the lower running wheel (21) being mounted on the same lower part translation track (20).
8. according to nine base tunnel construction methods of a kind of tunnel and Double side wall described in claim 1 or 2, it is characterised in that：Step 4 Described in upper falsework (14-1) and two sidepiece scaffolds (14-2) to set up the scaffold formed by steel pipe；
Two sidepiece scaffolds (14-2) are laid in symmetrical；The left and right sides of the upper falsework (14-1) and two institutes State and be fastenedly connected by transverse connection structure between sidepiece scaffold (14-2) top, the transverse connection structure includes Multiple lateral connection framves (14-3) laid from the front to the back；
The upper mould supporting rack being supported to arch forming panel (15-1) is provided with the upper falsework (14-1) (16-1), is both provided with the sidepiece being supported to the abutment wall forming panel on the outside of two sidepiece scaffolds (14-2) Formwork-support.
9. according to nine base tunnel construction methods of a kind of tunnel and Double side wall described in claim 4, it is characterised in that：Institute in step 1 State arch springing section inverted arch lining cutting and be divided on the outside of arch springing section inverted arch lining cutting (17-1) and on the outside of arch springing section in inverted arch lining cutting (17-1) Inverted arch lining cutting (17-2) on the inside of the arch springing section of side, the arch springing section inner side inverted arch lining cutting (17-2) are connected to inverted arch on the outside of arch springing section Between lining cutting (17-1) and tunnel bottom inverted arch lining cutting (13-2)；
When arch springing lining construction and the backfill construction of arch springing section inverted arch are carried out in step 3, first to two arch springing lining cutting (13-1) Side wall bottom lining cutting construct with inverted arch lining cutting (17-1) on the outside of arch springing section, and to two arches of construction molding Backfilled respectively in the arch of inverted arch lining cutting (17-1) on the outside of foot section；
The quantity of the inverted arch of arch springing section described in step 3 backfill structure is two, two arch springing section inverted arch backfill structure difference Positioned at the left and right sides of the medial support frame；Each arch springing section inverted arch backfill structure backfills knot temporarily including debris Inverted arch backfill structure (12-1) on the outside of structure (12-2) and the arch springing section being filled in the arch of inverted arch lining cutting (17-1) on the outside of arch springing section, institute State debris and backfill structure (12-2) temporarily and be filled in inverted arch lining cutting (17-1) and arch on the outside of side supports frame (11-1) and arch springing section On the outside of foot section between inverted arch backfill structure (12-1)；
Follow-up excavate region (6) are carried out in digging process from the front to the back in step 5, two debris are faced from the front to the back When backfill structure (12-2) removed respectively；
During carrying out tunnel bottom inverted arch lining construction in step 6, along tunnel Longitudinal extending direction from the front to the back respectively to two Inverted arch lining cutting (17-2) is synchronously constructed on the inside of a arch springing section.
10. according to nine base tunnel construction methods of a kind of tunnel and Double side wall described in claim 1 or 2, it is characterised in that：Step 1 When middle progress tunnel tentatively excavates, first from top to bottom arch pilot tunnel (7) is excavated, then from top to bottom the left side wall is led Hole and the right side wall pilot tunnel are excavated respectively；
When being excavated in step 5 to follow-up excavation region (6), from top to bottom follow-up excavate region (6) are excavated.
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