CN106121660B - Two side-wall pilot tunnel lining construction technique based on portable full hall scaffold - Google Patents

Two side-wall pilot tunnel lining construction technique based on portable full hall scaffold Download PDF

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Publication number
CN106121660B
CN106121660B CN201610663417.5A CN201610663417A CN106121660B CN 106121660 B CN106121660 B CN 106121660B CN 201610663417 A CN201610663417 A CN 201610663417A CN 106121660 B CN106121660 B CN 106121660B
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China
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arch
tunnel
lining
wall
construction
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CN106121660A (en
Inventor
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 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 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
    • E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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

Abstract

The invention discloses a kind of two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, multiple segments are divided to construct institute's construction tunnel from the front to the back along tunnel Longitudinal extending direction, when constructing to any segment, including step：First, tunnel tentatively excavates, and obtains preliminary excavation hole body；2nd, temporary support structure installation in preliminary bracing construction and hole：Preliminary bracing construction is carried out to the preliminary hole body that excavates from the front to the back, and just temporary support structure in a hole is respectively mounted in the preliminary mounting bracket of branch steelframe each；3rd, arch springing lining construction and the backfill of arch springing section inverted arch；4th, temporary support structure tentatively dismounting and arch wall lining construction in hole；5th, temporary support structure is subsequently removed in hole and tunnel subsequently excavates；6th, tunnel bottom inverted arch lining construction.Present invention process step is simple, design is reasonable and easy construction, using effect are good, and energy is easy, is rapidly completed two side-wall pilot tunnel lining construction process, and work progress is safe and reliable.

Description

Two side-wall pilot tunnel lining construction technique based on portable full hall scaffold
Technical field
The invention belongs to technical field of tunnel construction, more particularly, to a kind of double side wall based on portable full hall scaffold Pilot tunnel method lining construction technique.
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 based on movement The two side-wall pilot tunnel lining construction technique of formula full hall scaffold, its processing step is simple, design is reasonable and easy construction, use Effect is good, and energy is easy, is rapidly completed two side-wall pilot tunnel lining construction process, and work progress is safe and reliable.
In order to solve the above technical problems, the technical solution adopted by the present invention is：It is a kind of based on portable full hall scaffold Two side-wall pilot tunnel lining construction technique, it is characterised in that：Divide multiple segments from the front to the back to institute along tunnel Longitudinal extending direction Construction tunnel is constructed, the construction method all same of multiple segments；The Tunnel of any segment is equal in institute's construction tunnel Including left side wall pilot tunnel, right side wall pilot tunnel, top Core Soil region pilot tunnel and positioned at the top Core Soil region pilot tunnel just under Pilot tunnel is excavated in getting out of a predicament or an embarrassing situation for side, and the left side wall pilot tunnel is laid with the right side wall pilot tunnel in symmetrical, the top Core Soil area Domain pilot tunnel and excavation pilot tunnel of getting out of a predicament or an embarrassing situation are respectively positioned between the left side wall pilot tunnel and right side wall pilot tunnel；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；The secondary liner structure of the Tunnel is to tunnel Road hole carries out the concrete lining of tunneling boring supporting, and the secondary liner structure includes the arch that supporting is carried out to the arch wall of Tunnel Wall lining is built, is connected to the arch wall lining to the tunnel bottom inverted arch lining cutting-of Tunnel bottom progress supporting and left and right two Build and the lining cutting of tunnel bottom inverted arch-between arch springing lining cutting-, two arch springing lining cutting-be symmetrically laid in tunnel bottom inverted arch Lining cutting-the left and right sides；The arch springing lining cutting-include positioned at the side wall bottom lining cutting of the arch wall lining cutting bottom and positioned at tunnel The arch springing section inverted arch lining cutting in bottom inverted arch lining cutting-outside；The preliminary bracing structure of the Tunnel includes multiple along tunnel longitudinal direction Extending direction is laid and the first branch steelframe of tunneling boring supporting is carried out to Tunnel from the front to the back, and the just branch steelframe is to Tunnel The supporting steel frame of tunneling boring supporting is carried out, the just branch steelframe is included on the inside of the arch wall lining cutting and to the arch wall of Tunnel Carry out the steel arch-shelf of supporting-, carry out below the inverted arch lining cutting and to Tunnel bottom bottom link-and the left side of supporting Right two be connected to steel arch-shelf-and bottom link-between arch springing steelframe-, two arch springing steelframes-symmetrical laying In bottom link-the left and right sides, the preliminary installation of steel arch-shelf-and two arch springing steelframe-compositions just branch steelframe Frame；
When constructing to any segment in institute's construction tunnel, comprise the following steps：
Step 1: tunnel tentatively excavates：Along tunnel Longitudinal extending direction from the front to the back to currently constructing described in segment Left side wall pilot tunnel, the right side wall pilot tunnel and arch pilot tunnel are excavated respectively, excavate the left side wall pilot tunnel, described of completion Right side wall pilot tunnel and the preliminary of the current segment of constructing of arch pilot tunnel composition excavate hole body；
In the Tunnel of current segment of constructing region is excavated to be follow-up positioned at the preliminary region for excavating side in the body of hole；
Step 2: temporary support structure is installed in preliminary bracing construction and hole：Tunnel is carried out in step 1 tentatively to excavate Cheng Zhong, carries out preliminary bracing construction to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction, completes multiple institutes The installation process of the preliminary mounting bracket of first branch steelframe is stated, is passed through between the preliminary mounting bracket of multiple just branch steelframes The longitudinal connecting member that multiple tracks is laid along tunnel Longitudinal extending direction, which is fastenedly connected, to be integrated；Meanwhile in each just branch steelframe The preliminary mounting bracket in be respectively mounted temporary support structure in a hole, temporary support structure is with being located in each hole The preliminary mounting bracket on the outside of it, which is fastenedly connected, to be integrated, in each hole temporary support structure with the outside of it The preliminary mounting bracket 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 excavated at left and right sides of region in the hole Frame-, one be supported in it is follow-up excavate area top upper support shelf-, be supported in upper support shelf-top and the preliminary peace Upper support structure between shelving and two are respectively supported between two side supports framves-and the preliminary mounting bracket Side supports structure, two side supports structures respectively in the left side wall pilot tunnel and the right side wall pilot tunnel, The upper support structure is located in the pilot tunnel of arch, collateral in the upper support shelf-and two side supports frame-compositions Support frame frame, the medial support frame, the upper support structure and two side supports structures are laid in same perpendicular Face directly；
Upper support shelf-composition top vertical shift of temporary support structure is put down in all holes installed in current segment of constructing Platform；
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 current Two arch springing lining cutting of constructed segment-construct respectively, and to two arch springing lining cutting-described in arch springing section face upward Backfilled in the arch that arch lining is built, obtain arch springing section inverted arch backfill structure；
Step 4: temporary support structure tentatively dismounting and arch wall lining construction in hole：Along tunnel Longitudinal extending direction by rear Forward to the upper support structure in temporary support structure in the hole installed in current segment of constructing and two institutes Side supports structure is stated to be removed respectively；The upper support structure and two side supports structures removed Cheng Zhong, from the front to the back constructs the arch wall lining cutting using portable lining construction device, the arch wall of construction molding Lining cutting and two in the step 3 arch springing lining cutting-be fastenedly connected are 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 two of Tunnel Side wall carry out supporting side wall lining, two side wall linings be symmetrically laid in Arch lining-the left and right sides below；Institute State portable full hall scaffold and be erected on the left side wall respectively including the upper falsework-being erected in the pilot tunnel of arch and two Sidepiece scaffold in pilot tunnel and the right side wall pilot tunnel-, the upper falsework-bottom in the top vertical shift equipped with can put down The top running gear translated on platform, each sidepiece scaffold-bottom, which is respectively arranged with, to be returned in the arch springing section inverted arch Fill out the lower running system translated in structure；The template assembly includes the arch to Arch lining-carry out molding construction Forming panel-and two abutment wall forming panels that respectively two side wall linings are carried out with molding construction, two abutment walls Forming panel be symmetrically laid in arch forming panel-the left and right sides below；The arch forming panel-be supported in top foot hand Frame-top, two abutment wall forming panels are respectively supported at two sidepiece scaffold-outsides；
Step 5: temporary support structure is subsequently removed in hole and tunnel subsequently excavates：Along tunnel Longitudinal extending direction by rear The medial support frame in temporary support structure in the hole installed in current segment of constructing is carried out respectively forward Remove；The medial support frame in temporary support structure in the hole is carried out in demolishing process, from the front to the back to current The follow-up region of excavating of constructed segment is excavated, and is obtained to excavate the middle part pilot tunnel formed and get out of a predicament or an embarrassing situation and is excavated pilot tunnel；
In this step, the follow-up region of excavating of current segment of constructing is carried out in digging process from the front to the back, by backward Preceding bottom link to multiple just branch steelframes in step 2-install respectively, and make installed bottom link- The preliminary mounting bracket is fastenedly connected is integrated with installation is complete in step 2；
Step 6: tunnel bottom inverted arch lining construction：Along tunnel Longitudinal extending direction from the front to the back to current section of constructing The tunnel bottom inverted arch lining cutting of section-construct, two arches in the tunnel bottom inverted arch lining cutting-of construction molding and step 3 Foot lining cutting-be fastenedly connected is integrated.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 4 Described in upper falsework-and two described sidepiece scaffolds- to set up the scaffold formed by steel pipe；
Two sidepiece scaffolds-laid in symmetrical；The upper falsework-the left and right sides and two sidepieces It is fastenedly connected between scaffold-top by transverse connection structure, the transverse connection structure includes multiple by backward The lateral connection frame of preceding laying-；
The upper mould supporting rack that the upper falsework-being above provided with to arch forming panel-is supported-, two The sidepiece scaffold-outside be both provided with the side template supporting rack being supported to the abutment wall forming panel.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 1 Described in arch springing section inverted arch lining cutting be divided into inverted arch lining cutting-on the outside of arch springing section and on the outside of arch springing section inverted arch lining cutting-inner side arch The inverted arch lining cutting of foot section inner side-, arch springing section inner side inverted arch lining cutting-be connected to inverted arch lining cutting-and tunnel bottom on the outside of arch springing section Inverted arch lining cutting-between；
In step 3 carry out arch springing lining construction and arch springing section inverted arch backfill construction when, first to two arch springing lining cutting- Side wall bottom lining cutting and inverted arch lining cutting on the outside of arch springing section-construct, and to two arch springing sections of construction molding Outside inverted arch lining cutting-arch in backfilled respectively；
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-and be filled on the outside of the arch springing section on the outside of arch springing section in inverted arch lining cutting-arch inverted arch backfill structure-, the debris is interim Backfill structure-be filled on the outside of side supports frame-and arch springing section on the outside of inverted arch lining cutting-and arch springing section inverted arch backfill structure-between；
The follow-up region of excavating of current segment of constructing is carried out in digging process from the front to the back in step 5, from the front to the back Two debris are backfilled with structure-remove respectively temporarily；
During carrying out tunnel bottom inverted arch lining construction in step 6, divide from the front to the back along tunnel Longitudinal extending direction It is other to inverted arch lining cutting on the inside of two arch springing sections-synchronously construct.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 1 Described in the follow-up left and right sides wall for excavating region be curved wall；
Side supports frame described in step 3-and upper support shelf-are shape steel bracket, and the side supports frame-it is arc Shape supporting rack.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 3 Described in upper support structure include it is multiple lay from left to right upper support column-, the upper support column-bottom support In upper support shelf-upper and its top braces on the preliminary mounting bracket；
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 are respectively supported between side supports frame-and the preliminary mounting bracket.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 2 Described on top vertical shift platform tiling have a upper backup pad being supported to upper falsework, on the upper backup pad by it is left extremely The right side is provided with multiple top translation tracks laid along tunnel Longitudinal extending direction；
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.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：The tunnel The preliminary bracing structure in road hole further includes the arch wall preliminary bracing structure that supporting is carried out to the arch wall of Tunnel, the arch wall initial stage Supporting construction 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 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.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 1 When middle progress tunnel tentatively excavates, first from top to bottom arch pilot tunnel is excavated, then from top to bottom to the left side wall pilot tunnel Excavated respectively with the right side wall pilot tunnel；
When being excavated in step 5 to the subsequently excavation region of current segment of construct, from top to bottom to follow-up excavation area Excavated in domain.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 1 Described in left side wall pilot tunnel and right side wall pilot tunnel be from top to bottom divided into upper lateral part pilot tunnel, middle sidepiece pilot tunnel and following side pilot tunnel；
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-and the preliminary mounting bracket；
Cross-brace beam described in twice is respectively positioned at the upper cross-brace beam of upper lateral part pilot tunnel bottom and positioned at middle sidepiece The middle cross-brace beam of pilot tunnel bottom；
Side wall lining described in step 4 is divided into lower side wall lining-and the top wall lining positioned at lower side wall lining-top Build-, the lower side wall lining-and upper side wall lining-between junction be located in middle sidepiece pilot tunnel；
The abutment wall forming panel is included to the lower abutment wall forming panel-of lower side wall lining-carry out molding construction and to upper The upper abutment wall forming panel of side wall lining-carry out molding construction-, the upper abutment wall forming panel-positioned at lower abutment wall forming panel- Top.
The above-mentioned two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterized in that：Step 4 In when constructing to the arch wall lining cutting, first to the lower side wall lining of two side wall linings-construct, then to two The upper side wall lining of the side wall lining-construct, then to Arch lining-construct；
Upper falsework described in step 4-and two sidepiece scaffolds-length be 9m~12m.
The present invention has the following advantages compared with prior art：
1st, processing 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, temporary support structure is pacified in preliminary bracing construction and hole Temporary support structure tentatively faces in dismounting and arch wall lining construction, hole in dress, arch springing lining construction and the backfill of arch springing section inverted arch, hole When supporting structure subsequently remove and tunnel subsequently excavates and tunnel bottom inverted arch lining construction this six construction procedures, above-mentioned six Construction procedure can be carried out synchronously, need to only ensure construction speed, construction efficiency is high and construction quality is easy to ensure, work progress Securely and reliably.
3rd, temporary support structure forms temporary supporting system, temporary support architecture letter in used multiple holes Single, design is rationally and erection and dismounting are easy, using effect is good, practical value is high, and construction efficiency is high, and labor intensity is low, saving of labor Time saving, temporary support structure is mounted in a first branch steelframe that supporting is carried out to Tunnel in each hole；Face in each hole When supporting structure be fastenedly connected and be integrated with the preliminary mounting bracket on the outside of it, temporary support structure is equal in each hole It is laid on same tunnel cross-section with the preliminary mounting bracket on the outside of it, thus is propped up temporarily in each hole of the present invention Support structure is installed in preliminary mounting bracket and is fastenedly connected with preliminary mounting bracket and is integrated, since first branch steelframe is to Tunnel The supporting construction of preliminary bracing supporting is carried out, and all just branch steelframes in Tunnel are fastenedly connected and are integrated, so that Temporary support structure can be fastenedly connected as an entirety in all holes of the present invention, and is used cooperatively with first branch steelframe, so that right 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 dismounts Simplicity, using effect are good, can be engaged with Tunnel structure and carry out supporting to having excavated shaping hole body, and can be to follow-up Excavate region and carry out effective support.
4th, the structure of temporary support structure is simple in used hole, design is reasonable and dismounting simplicity, using effect are good, Including two symmetrical prop up follow-up excavation area top is supported in arranged on the follow-up side supports frame excavated at left and right sides of region, one Upper support shelf, be supported in above upper support shelf and the first upper support structure and two between the preliminary mounting bracket of branch steelframe A side supports structure being respectively supported between two side supports framves and preliminary mounting bracket, upper support shelf and two sidepieces Supporting rack 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 a side supports structure and first branch steelframe, which is fastenedly connected, to be integrated, and can further improve temporary support knot in hole The overall stability of structure, and due to being only completed the installation process of preliminary mounting bracket in first branch steelframe at this time, bottom link is also Do not install, thus just branch steelframe is unclosed at this time, and preliminary mounting bracket effectively can be supported using temporary support structure in hole, So as to be effectively ensured the supporting effect of preliminary mounting bracket, temporary support structure and first branch steelframe are with the use of can be to having opened in hole Scrape out type hole body (i.e. the preliminary of Tunnel excavates hole body) and carry out effective support, supporting intensity is high, can ensure that Tunnel Effect.
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 following wall lining Block 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 two side-wall pilot tunnel lining construction process, and construction efficiency is high, and applies Work risk is small, and difficulty of construction is low.
In conclusion present invention process step is simple, design is reasonable and easy construction, using effect are good, can be easy, quick Two side-wall pilot tunnel lining construction process is 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 process flow diagram of the present invention.
Fig. 2 is the structure diagram of construction molding lining cutting 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-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 supporting plate.
Embodiment
A kind of two side-wall pilot tunnel lining construction technique based on portable full hall scaffold as shown in Figure 1, along tunnel Longitudinal extending direction divides multiple segments to construct institute's construction tunnel from the front to the back, and the construction method of multiple segments is homogeneous Together；With reference to Fig. 2 and Fig. 9, in institute's construction tunnel the Tunnel 9-1 of any segment include left side wall pilot tunnel, right side wall pilot tunnel, on Portion's Core Soil 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 and the right side wall pilot tunnel are laid in symmetrical, the top Core Soil region pilot tunnel and 9 equal position of excavation pilot tunnel of getting out of a predicament or an embarrassing situation Between the 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 Middle part pilot tunnel 8 immediately below portion's pilot tunnel 7；The secondary liner structure of the Tunnel 9-1 is to carry out tunneling boring branch to Tunnel 9-1 The concrete lining of shield, the secondary liner structure include the arch wall lining cutting of the arch wall progress supporting to Tunnel 9-1, to tunnel Hole 9-1 bottoms carry out the tunnel bottom inverted arch lining cutting 13-2 of supporting and left and right two is connected to the arch wall lining cutting and tunnel Arch springing lining cutting 13-1 between bottom inverted arch lining cutting 13-2, two arch springing lining cutting 13-1 are symmetrically laid in tunnel bottom and face upward Arch lining builds the left and right sides of 13-2；The arch springing lining cutting 13-1 include positioned at the arch wall lining cutting bottom the lining cutting of side wall bottom and Arch springing section inverted arch lining cutting on the outside of tunnel bottom inverted arch lining cutting 13-2；The preliminary bracing structure of the Tunnel 9-1 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 9-1, it is described First branch steelframe is the supporting steel frame that tunneling boring supporting is carried out to Tunnel 9-1, and the just branch steelframe includes serving as a contrast positioned at the arch wall Build inner side and the arch wall to Tunnel 9-1 carries out the steel arch-shelf 10-3 of supporting, below the inverted arch lining cutting and to Tunnel 9-1 bottoms carry out the bottom link 10-1 of supporting and left and right two is connected to steel arch-shelf 10-3 and bottom link 10-1 Between arch springing steelframe 10-2, two arch springing steelframe 10-2 be symmetrically laid in the left and right sides of bottom link 10-1, steel The preliminary mounting bracket of bow member 10-3 and two arch springing steelframe 10-2 compositions just branch steelframes；
When constructing to any segment in institute's construction tunnel, comprise the following steps：
Step 1: tunnel tentatively excavates：Along tunnel Longitudinal extending direction from the front to the back to currently constructing described in segment Left side wall pilot tunnel, the right side wall pilot tunnel and arch pilot tunnel 7 are excavated respectively, excavate the left side wall pilot tunnel, the institute of completion State right side wall pilot tunnel and arch pilot tunnel 7 forms the preliminary of current segment of constructing and excavates hole body；
The region of side is follow-up excavation area in the preliminary excavation hole body in the Tunnel 9-1 of current segment of constructing Domain 6；
Step 2: temporary support structure is installed in preliminary bracing construction and hole：Tunnel is carried out in step 1 tentatively to excavate Cheng Zhong, carries out preliminary bracing construction to the preliminary hole body that excavates from the front to the back along tunnel Longitudinal extending direction, completes multiple institutes The installation process of the preliminary mounting bracket of first branch steelframe is stated, is passed through between the preliminary mounting bracket of multiple just branch steelframes The longitudinal connecting member that multiple tracks is laid along tunnel Longitudinal extending direction, which is fastenedly connected, to be integrated；Meanwhile in each just branch steelframe The preliminary mounting bracket in be respectively mounted temporary support structure in a hole, temporary support structure is with being located in each hole The preliminary mounting bracket on the outside of it, which is fastenedly connected, to be integrated, in each hole temporary support structure with the outside of it The preliminary mounting bracket is laid 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 area including two symmetrical branch in the hole The side supports frame 11-1 of the left and right sides of domain 6, a upper support shelf 11-2 for being supported in follow-up excavation 6 top of region, support Upper support structure above upper support shelf 11-2 between the preliminary mounting bracket and two are respectively supported at two institutes State the side supports structure between side supports frame 11-1 and the preliminary mounting bracket, two side supports structure difference positions In 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 top branch Support 11-2 and two side supports frame 11-1 compositions medial support frames, the medial support frame, the top branch Support structure and two side supports structures are laid on same vertical plane；
The upper support shelf 11-2 compositions top of temporary support structure is indulged in all holes installed in current segment of constructing Move platform；
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 current Two arch springing lining cutting 13-1 of constructed segment construct respectively, and to encircleing described in two arch springing lining cutting 13-1 Backfilled in the arch of foot section inverted arch lining cutting, obtain arch springing section inverted arch backfill structure；
Step 4: temporary support structure tentatively dismounting and arch wall lining construction in hole：Along tunnel Longitudinal extending direction by rear Forward to the upper support structure in temporary support structure in the hole installed in current segment of constructing and two institutes Side supports structure is stated to be removed respectively；The upper support structure and two side supports structures removed Cheng Zhong, from the front to the back constructs the arch wall lining cutting using portable lining construction device, the arch wall of construction molding Lining cutting 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, described Upper falsework 14-1 bottoms are equipped with the top running gear that can be translated on the top vertical shift platform, each side Portion scaffold 14-2 bottoms are respectively arranged with the lower running system that can be translated in arch springing section inverted arch backfill structure；It is described Template assembly is included to the arch forming panel 15-1 of Arch lining 13-3 progress molding constructions 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 abutment walls Forming panel is respectively supported on the outside of two sidepiece scaffold 14-2；
Step 5: temporary support structure is subsequently removed in hole and tunnel subsequently excavates：Along tunnel Longitudinal extending direction by rear The medial support frame in temporary support structure in the hole installed in current segment of constructing is carried out respectively forward Remove；The medial support frame in temporary support structure in the hole is carried out in demolishing process, from the front to the back to current The follow-up region 6 of excavating of constructed segment is excavated, and is obtained to excavate the middle part pilot tunnel 8 formed and get out of a predicament or an embarrassing situation and is excavated pilot tunnel 9；
In this step, the follow-up region 6 of excavating of current segment of constructing is carried out in digging process from the front to the back, by backward The preceding bottom link 10-1 to multiple just branch steelframes in step 2 is installed, and is connected installed bottom respectively Frame 10-1 is fastenedly connected with the preliminary mounting bracket that installation is complete in step 2 and is integrated；
Step 6: tunnel bottom inverted arch lining construction：Along tunnel Longitudinal extending direction from the front to the back to current section of constructing The tunnel bottom inverted arch lining cutting 13-2 of section constructs, two in the tunnel bottom inverted arch lining cutting 13-2 and step 3 of construction molding The arch springing lining cutting 13-1, which is fastenedly connected, to be integrated.
In the present embodiment, propped up temporarily in preliminary bracing construction and hole in the preliminary digging process in tunnel, step 2 in step 1 Temporary support in hole in arch springing lining construction and arch springing section inverted arch backfilling process, step 4 in support structure installation process, step 3 Temporary support structure is subsequently removed in hole in structure tentatively dismounting and arch wall lining construction process, step 5 and tunnel subsequently excavates Tunnel bottom inverted arch lining construction process can synchronously construct in process and step 6, need to only ensure the construction of each step into Degree is different.
In the present embodiment, upper falsework 14-1 described in step 4 and two sidepiece scaffold 14-2 serve as reasons 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.
Tiling in the present embodiment, on the platform of top vertical shift described in step 2 has what upper falsework 14-1 was supported Upper backup pad 17, multiple tops laid along tunnel Longitudinal extending direction are provided with the upper backup pad 17 and are translated from left to right Track 18；
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 supporting plate 22, the lower part translation track 11 of left and right two are installed on lower supporting plate 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 4 and lower part translation track 11 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 5 and lower running wheel 18 It is 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, the inverted arch lining cutting of arch springing section described in step 1 is divided into inverted arch lining cutting 17-1 on the outside of arch springing section and is located at Inverted arch lining cutting 17-2 on the inside of 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 It 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 knots Structure is located at the left and right sides of the medial support frame respectively；It is interim that each arch springing section inverted arch backfill structure includes debris Backfill structure 12-2 and inverted arch backfill structure 12-1, institute on the outside of the arch springing section being filled on the outside of arch springing section in inverted arch lining cutting 17-1 arches State debris and backfill structure 12-2 temporarily and be filled on the outside of side supports frame 11-1 and arch springing section outside inverted arch lining cutting 17-1 and arch springing section Between the inverted arch backfill structure 12-1 of side；
The follow-up region 6 of excavating of current segment of constructing is carried out in digging process from the front to the back in step 5, by backward It is preceding structure 12-2 is backfilled temporarily to two debris to remove 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.
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 is supported on upper support shelf 11-2 and its top braces is in the preliminary installation On frame.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.
In the present embodiment, the preliminary bracing structure of the Tunnel 9-1 is further included carries out supporting to the arch wall of Tunnel 9-1 Arch wall preliminary bracing structure, 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 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.
In the present embodiment, left side wall pilot tunnel described in step 1 is from top to bottom divided into upper lateral part pilot tunnel with right side wall pilot tunnel 1st, middle sidepiece pilot tunnel 2 and following side pilot tunnel 3.Thus, 9 pilot tunnels, institute's construction tunnel are included on the excavated section of institute's construction tunnel Excavation construction method be two side-wall pilot tunnel, and using nine excavation, also referred to as nine pilot tunnel methods of double side wall.
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, side wall lining described in step 4 is divided into lower side wall lining 13-4 and positioned at lower side wall lining 13-4 The upper side wall lining 13-5 of top, the junction between the lower side wall lining 13-4 and upper side wall lining 13-5 are located at middle sidepiece In pilot tunnel 2；
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.
During practice of construction, when progress tunnel tentatively excavates in step 1, first from top to bottom arch pilot tunnel 7 is opened Dig, then from top to bottom the left side wall pilot tunnel and the right side wall pilot tunnel are excavated respectively；
When current segment of construct follow-up being excavated region 6 and excavated in step 5, from top to bottom to subsequently excavation Excavated in region 6.
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 is 22.8m and its height is 19m, the thickness of the secondary lining For 80cm and its use C45P10 water-proof concretes, inverted arch backfill structure 12-1 uses the common coagulations of C20 on the outside of the arch springing section 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；Institute The vertical total departure step pitch for stating vertical steel pipe in upper falsework 14-1 is 60cm；Meanwhile set on upper falsework 14-1 Vertical 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.
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 1. two side-wall pilot tunnel lining construction technique based on portable full hall scaffold, it is characterised in that：Indulged along tunnel Multiple segments are divided to construct institute's construction tunnel from the front to the back to extending direction, the construction method all same of multiple segments；Institute The Tunnel (9-1) of any segment includes left side wall pilot tunnel, right side wall pilot tunnel, top Core Soil region pilot tunnel in construction tunnel Pilot tunnel (9), the left side wall pilot tunnel and the right side are excavated with getting out of a predicament or an embarrassing situation immediately below the top Core Soil region pilot tunnel Side wall pilot tunnel is laid in symmetrical, and 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 the left side wall Between pilot tunnel and right side wall pilot tunnel；The top Core Soil region pilot tunnel be divided into arch pilot tunnel (7) and positioned at arch pilot tunnel (7) just The middle part pilot tunnel (8) of lower section；The secondary liner structure of the Tunnel (9-1) is to carry out tunneling boring supporting to Tunnel (9-1) Concrete lining, the secondary liner structure includes carrying out the arch wall of Tunnel (9-1) the arch wall lining cutting of supporting, to tunnel Hole (9-1) bottom carry out supporting tunnel bottom inverted arch lining cutting (13-2) and left and right two be connected to the arch wall lining cutting and Arch springing lining cutting (13-1) between tunnel bottom inverted arch lining cutting (13-2), two arch springing lining cutting (13-1) are symmetrically laid in tunnel The left and right sides of road bottom inverted arch lining cutting (13-2)；The arch springing lining cutting (13-1) is included positioned at the side of the arch wall lining cutting bottom The lining cutting of wall bottom and the arch springing section inverted arch lining cutting on the outside of tunnel bottom inverted arch lining cutting (13-2)；The Tunnel (9-1) Preliminary bracing structure includes multiple laid from the front to the back along tunnel Longitudinal extending direction and to Tunnel (9-1) progress tunneling boring branch The first branch steelframe of shield, the just branch steelframe is the supporting steel frame that tunneling boring supporting is carried out to Tunnel (9-1), the just branch steelframe Including carrying out the steel arch-shelf (10-3) of supporting, positioned at described on the inside of the arch wall lining cutting and to the arch wall of Tunnel (9-1) The bottom link (10-1) of supporting is carried out below inverted arch lining cutting and to Tunnel (9-1) bottom and left and right two is connected to Arch springing steelframe (10-2) between steel arch-shelf (10-3) and bottom link (10-1), two arch springing steelframes (10-2) are symmetrical The left and right sides of bottom link (10-1) is laid in, described in steel arch-shelf (10-3) and two arch springing steelframes (10-2) compositions The preliminary mounting bracket of first branch steelframe；
    When constructing to any segment in institute's construction tunnel, comprise the following steps：
    Step 1: tunnel tentatively excavates：Along tunnel Longitudinal extending direction from the front to the back to the left side of current segment of constructing Wall pilot tunnel, the right side wall pilot tunnel and arch pilot tunnel (7) are excavated respectively, excavate the left side wall pilot tunnel, described of completion Right side wall pilot tunnel and the preliminary of the current segment of constructing of arch pilot tunnel (7) composition excavate hole body；
    In the Tunnel (9-1) of current segment of constructing region is excavated to be follow-up positioned at the preliminary region for excavating side in the body of hole (6)；
    Step 2: temporary support structure is installed in preliminary bracing construction and hole：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, completes multiple just branch The installation process of the preliminary mounting bracket of steelframe, passes through multiple tracks edge between the preliminary mounting bracket of multiple just branch steelframes The longitudinal connecting member that tunnel Longitudinal extending direction is laid, which is fastenedly connected, to be integrated；Meanwhile described in each just branch steelframe Be respectively mounted temporary support structure in a hole in preliminary mounting bracket, in each hole temporary support structure with positioned at its outside The preliminary mounting bracket be fastenedly connected and be integrated, in each hole temporary support structure with the outside of it is described just Step mounting bracket 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；
    Upper support shelf (11-2) the composition top vertical shift of temporary support structure in all holes installed in current segment of constructing Platform；
    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 currently being applied Two arch springing lining cutting (13-1) of work segment are constructed respectively, and to encircleing described in two arch springing lining cutting (13-1) Backfilled in the arch of foot section inverted arch lining cutting, obtain arch springing section inverted arch backfill structure；
    Step 4: temporary support structure tentatively dismounting and arch wall lining construction in hole：Along tunnel Longitudinal extending direction from the front to the back To the upper support structure in temporary support structure in the hole installed in current segment of constructing and two sides Portion's supporting structure is removed respectively；Demolishing process is carried out to the upper support structure and two side supports structures In, constructed from the front to the back to the arch wall lining cutting using portable lining construction device, the arch wall lining of construction molding Block is fastenedly connected with two in the step 3 arch springing lining cutting (13-1) to be 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 on the top vertical shift platform, 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: temporary support structure is subsequently removed in hole and tunnel subsequently excavates：Along tunnel Longitudinal extending direction from the front to the back The medial support frame in temporary support structure in the hole installed in current segment of constructing is removed respectively； The medial support frame in temporary support structure in the hole is carried out in demolishing process, from the front to the back to currently being constructed Follow-up excavate region (6) of segment are excavated, and are obtained to excavate the middle part pilot tunnel (8) formed and get out of a predicament or an embarrassing situation and are excavated pilot tunnel (9)；
    In this step, follow-up excavate region (6) of current segment of constructing are carried out in digging process from the front to the back, from the front to the back The bottom link (10-1) of multiple just branch steelframes in step 2 is installed respectively, and connects installed bottom Frame (10-1) is fastenedly connected with the preliminary mounting bracket that installation is complete in step 2 and is integrated；
    Step 6: tunnel bottom inverted arch lining construction：Along tunnel Longitudinal extending direction from the front to the back to current segment of constructing Tunnel bottom inverted arch lining cutting (13-2) is constructed, two in the tunnel bottom inverted arch lining cutting (13-2) of construction molding and step 3 The arch springing lining cutting (13-1), which is fastenedly connected, to be integrated.
  2. 2. the two side-wall pilot tunnel lining construction technique described in accordance with the claim 1 based on portable full hall scaffold, it is special Sign is：Upper falsework described in step 4 (14-1) and two sidepiece scaffolds (14-2) are to set up shape by steel pipe Into scaffold；
    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.
  3. 3. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 1 or 2, its It is characterized in that：The inverted arch lining cutting of arch springing section described in step 1 is divided on the outside of arch springing section inverted arch lining cutting (17-1) and outside arch springing section Inverted arch lining cutting (17-2) on the inside of arch springing section on the inside of side inverted arch lining cutting (17-1), the arch springing section inner side inverted arch lining cutting (17-2) is even It 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 (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) of current segment of constructing are carried out in digging process from the front to the back in step 5, from the front to the back Structure (12-2) is backfilled temporarily to two debris to remove 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.
  4. 4. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 1 or 2, its It is characterized in that：The left and right sides wall that region (6) are subsequently excavated described in step 1 is curved wall；
    Side supports frame described in step 3 (11-1) and upper support shelf (11-2) are shape steel bracket, the side supports frame (11-1) is curved support frame.
  5. 5. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 1 or 2, its It is characterized in that：Upper support structure described in step 3 includes multiple upper support columns (11-3) laid from left to right, described The bottom of upper support column (11-3) is supported in upper support shelf (11-2) and its top braces is on the preliminary mounting bracket；
    Each side supports structure includes the cross-brace beam that multiple tracks is from top to bottom laid, and the cross-brace beam is in water Plain cloth is set, 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.
  6. 6. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 1 or 2, its It is characterized in that：Tiling has the upper backup pad being supported to upper falsework (14-1) on the platform of top vertical shift described in step 2 (17), multiple top translation tracks laid along tunnel Longitudinal extending direction are provided with the upper backup pad (17) from left to right (18)；
    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).
  7. 7. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 1 or 2, its It is characterized in that：The preliminary bracing structure of the Tunnel (9-1) further includes the arch wall that supporting is carried out to the arch wall of Tunnel (9-1) Preliminary bracing structure, 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 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.
  8. 8. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 1 or 2, its It is characterized in that：Tunnel is carried out in step 1 when tentatively excavating, first from top to bottom arch pilot tunnel (7) is excavated, then by up to Under the left side wall pilot tunnel and the right side wall pilot tunnel are excavated respectively；
    When being excavated in step 5 to subsequently excavation region (6) of current segment of construct, from top to bottom to follow-up excavation area Excavated in domain (6).
  9. 9. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 1 or 2, its It is characterized in that：Left side wall pilot tunnel described in step 1 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)；
    Each side supports structure includes twice cross-brace beam, and the cross-brace beam is in horizontal layout, the horizontal stroke It is respectively supported to the inside and outside both ends of supporting beam 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 upper lateral part pilot tunnel (1) bottom and positioned at middle side The middle cross-brace beam (5) of portion's pilot tunnel (2) bottom；
    Side wall lining described in step 4 is divided into lower side wall lining (13-4) and the top above lower side wall lining (13-4) Wall lining builds (13-5), and the junction between the lower side wall lining (13-4) and upper side wall lining (13-5) is located at middle sidepiece pilot tunnel (2) in；
    The abutment wall forming panel includes carrying out lower side wall lining (13-4) the lower abutment wall forming panel (15-2) of molding construction 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) above lower abutment wall forming panel (15-2).
  10. 10. according to the two side-wall pilot tunnel lining construction technique based on portable full hall scaffold described in claim 9, it is special Sign is：When constructing in step 4 to the arch wall lining cutting, first to the lower side wall lining (13- of two side wall linings 4) construct, then construct to the upper side wall lining (13-5) of two side wall linings, then to Arch lining (13- 3) construct；
    The length of upper falsework described in step 4 (14-1) and two sidepiece scaffolds (14-2) is 9m~12m.
CN201610663417.5A 2016-08-12 2016-08-12 Two side-wall pilot tunnel lining construction technique based on portable full hall scaffold Active CN106121660B (en)

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CN108868834B (en) * 2018-07-10 2023-06-23 中铁二十局集团有限公司 Temporary support device for tunnel arch wall primary support intrusion limit arch changing construction
CN112343629A (en) * 2019-08-07 2021-02-09 高军 Advanced support method for complex geological tunnel
CN110671132B (en) * 2019-10-31 2024-02-27 中铁二十局集团有限公司 Deep loess tunnel deformation control construction structure and method based on sleeve arch

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CN203669884U (en) * 2014-01-15 2014-06-25 中国水利水电第五工程局有限公司 Movable all-round steel pipe scaffold for tunnel lining construction
CN203702179U (en) * 2014-03-04 2014-07-09 张进军 Single-track tunnel lining trolley with ventilating duct
CN204941564U (en) * 2015-06-26 2016-01-06 中铁二十一局集团有限公司 Subway tunnel narrow spacing leaves the right or normal track row gate-type lining cutting bench frame apparatus
CN105649651A (en) * 2015-12-31 2016-06-08 中铁二十五局集团第五工程有限公司 Construction method of secondary tunnel lining

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CN201627359U (en) * 2010-04-14 2010-11-10 中国葛洲坝集团股份有限公司 Large-section arch top concrete lining movable load-bearing bent
CN203669884U (en) * 2014-01-15 2014-06-25 中国水利水电第五工程局有限公司 Movable all-round steel pipe scaffold for tunnel lining construction
CN203702179U (en) * 2014-03-04 2014-07-09 张进军 Single-track tunnel lining trolley with ventilating duct
CN204941564U (en) * 2015-06-26 2016-01-06 中铁二十一局集团有限公司 Subway tunnel narrow spacing leaves the right or normal track row gate-type lining cutting bench frame apparatus
CN105649651A (en) * 2015-12-31 2016-06-08 中铁二十五局集团第五工程有限公司 Construction method of secondary tunnel lining

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