CN205876360U - Interim support system is used in tunnel two side wall drift method excavation construction - Google Patents
Interim support system is used in tunnel two side wall drift method excavation construction Download PDFInfo
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- CN205876360U CN205876360U CN201620876760.3U CN201620876760U CN205876360U CN 205876360 U CN205876360 U CN 205876360U CN 201620876760 U CN201620876760 U CN 201620876760U CN 205876360 U CN205876360 U CN 205876360U
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 75
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008093 supporting effect Effects 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 210000000452 mid-foot Anatomy 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 210000002683 foot Anatomy 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000011900 installation process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses an interim support system is used in tunnel two side wall drift method excavation construction, lay temporary supporting structure in the hole in tunnel hole including a plurality of forward after by, temporary supporting structure all installs in at the beginning of one steelframe in every hole, just a steelframe includes steel bow member, bottom link and controls two hunch foot steelframes, and the preliminary mounting bracket that just props up the steelframe is constituteed to steel bow member and two hunch foot steelframes, temporary supporting structure is all as an organic whole with the preliminary mounting bracket fastening connection that is located its outside in every hole, left side wall pilot tunnel, right side wall pilot tunnel and hunch portion pilot tunnel constitution in the tunnel hole tentatively excavate the hole body, and temporary supporting structure includes two lateral part support frames, upper strut frame, upper portion bearing structure and two lateral part bearing structure in the hole. The utility model has the advantages of simple structure and reasonable design and the dismouting is simple and convenient, excellent in use effect, can cooperate with tunnel initial stage supporting construction and strut excavating the shaping hole body to can effectively strut follow -up excavation region.
Description
Technical field
This utility model belongs to technical field of tunnel construction, especially relates to a kind of tunnel and Double side heading method excavation construction
Use temporary supporting system.
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, with New Austrian Tunneling Method ultimate principle as foundation.When using two side-wall pilot tunnel to carry out tunnel excavation, used opens
Wa Mian branch is generally in the form of and tunnel excavation section is divided into four pieces, i.e. left side wall base tunnel (also referred to as left side wall pilot tunnel), right side
Wall base tunnel (also referred to as right side wall pilot tunnel), upper core cubsoil region base tunnel (also referred to as upper core cubsoil region pilot tunnel) and get out of a predicament or an embarrassing situation
Excavation base tunnel (excavation pilot tunnel of also referred to as getting out of a predicament or an embarrassing situation).Field measurement shows, 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 many, disturbance is big, the time of initial support tunneling boring Guan Bi
Long, but the most each self-closing after excavation of each piecemeal, thus develop hardly in construction intermediate deformation.Double side wall is led
Hole method construction safety, but speed is relatively slow, relatively costly.When using two side-wall pilot tunnel to carry out tunnel excavation, due to excavated section
Piecemeal is many, it is necessary to arrange temporary supporting system, on the one hand prevents follow-up excavation region from caving in, on the other hand to excavating molding hole
Body carries out effective support, to guarantee construction safety.But nowadays, when using two side-wall pilot tunnel to carry out tunnel excavation, there is no one
The construction method of individual unification, standard and specification is available for following, and the temporary supporting system used exists structure the most to some extent
The problems such as complexity, dismounting is inconvenient, support effect is poor.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, it is provided that a kind of tunnel
Two side-wall pilot tunnel excavation construction temporary supporting system, its simple in construction, reasonable in design and dismounting is easy, using effect is good,
Can match with Tunnel structure and carry out supporting to excavating molding hole body, and follow-up excavation region can be carried out effectively
Supporting.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of tunnel and Double side heading method is opened
Excavation construction temporary supporting system, it is characterised in that: include multiple before backward, being laid in tunnel along longitudinal extension direction, tunnel
Temporary support structure in the hole in hole, in each described hole, temporary support structure is mounted on one and carries out Tunnel at the beginning of supporting
Prop up in steelframe；A described just steelframe includes that the arch wall to Tunnel carries out the steel arch-shelf of supporting, to carrying out supporting bottom Tunnel
Bottom link and the arch springing steelframe that is connected between steel arch-shelf and bottom link of two, left and right, two described arch springings
Steelframe symmetry is laid in the left and right sides of bottom link, steel arch-shelf and two described just steelframes of described arch springing steelframe composition
Preliminary installing rack；In each described hole, temporary support structure is all fastenedly connected with the described preliminary installing rack being positioned at outside it is one
Body, in each described hole, temporary support structure is all laid in same tunnel cross-section with the described preliminary installing rack being positioned at outside it
On；
Described Tunnel includes left side wall pilot tunnel, right side wall pilot tunnel, upper core cubsoil region pilot tunnel and is positioned at described top
Excavation pilot tunnel of getting out of a predicament or an embarrassing situation immediately below the pilot tunnel of Core Soil region, described left side wall pilot tunnel and described right side wall pilot tunnel symmetrically cloth
If, described upper core cubsoil region pilot tunnel and excavation pilot tunnel of getting out of a predicament or an embarrassing situation be respectively positioned on described left side wall pilot tunnel and right side wall pilot tunnel it
Between；Described upper core cubsoil region pilot tunnel is divided into arch pilot tunnel and is positioned at the middle part pilot tunnel immediately below the pilot tunnel of arch；Described left side
Wall pilot tunnel, described right side wall pilot tunnel and arch pilot tunnel composition preliminary excavation hole body, be positioned at described preliminary excavation hole body in Tunnel
The region of inner side is follow-up excavation region；
In described hole, temporary support structure includes that two symmetries prop up the side supports being located at the left and right sides, follow-up excavation region
Frame, upper support shelf being supported in follow-up excavation area top, be supported in above upper support shelf with described preliminary installation
Upper support structure between frame and two are respectively supported between two described side supports framves and described preliminary installing rack
Side supports structure, two described side supports structures lay respectively in described left side wall pilot tunnel and described right side wall pilot tunnel, institute
State upper support structure and be positioned at arch pilot tunnel, described upper support shelf and two described side supports frame composition medial branch support frames
Frame, the described side supports structure of described medial support framework, described upper support structure and two is all laid in same vertical plane
On.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: two described side supports
Structure is symmetrically laid.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: described follow-up excavation region
Left and right sides wall be curved wall, described side supports frame is curved support frame.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: described upper support structure
Including multiple upper support posts laid from left to right, the bottom support of described upper support post is in upper support shelf and it pushes up
Portion is supported on described preliminary installing rack.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: described upper support structure
Include that three described upper support posts, three described upper support posts include that is supported in a top in the middle part of upper support shelf
Midfoot support post and two symmetries are laid in the side supports post of the described midfoot support post left and right sides, two described side supports
Post is respectively supported at above the left and right sides of upper support shelf；
Described midfoot support post is vertical support column；Two described side supports posts are curved support post and the two difference
Be supported in above two described side supports framves, each described side supports frame all with the described side supports of the side of being supported on
Post connects one arc support of formation.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: described upper support post is
I-steel.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: each described side supports
Structure all includes that the cross-brace beam that multiple tracks is from top to bottom laid, described cross-brace beam are that level is laid, described cross-brace
The inside and outside two ends of beam are respectively supported between side supports frame and described preliminary installing rack.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: described left side wall pilot tunnel with
Right side wall pilot tunnel is the most from top to bottom divided into upper lateral part pilot tunnel, middle sidepiece pilot tunnel and following side pilot tunnel；
Each described side supports structure all includes twice cross-brace beam, and cross-brace beam described in twice is respectively positioned at
Upper cross-brace beam bottom upper lateral part pilot tunnel and be positioned at the middle cross-brace beam bottom middle sidepiece pilot tunnel.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: described cross-brace beam is
I-steel.
Above-mentioned tunnel and Double side heading method excavation construction temporary supporting system, is characterized in that: described side supports frame and
Upper support shelf is I-steel.
This utility model compared with prior art has the advantage that
1, simple in construction, reasonable in design and dismounting simplicity, efficiency of construction is high.
2, the simple in construction of temporary support structure in hole, reasonable in design and dismounting is easy, using effect is good, right including two
Claim to prop up and be located at the side supports frame of the left and right sides, follow-up excavation region, a upper support being supported in follow-up excavation area top
Frame, the upper support structure being supported in above upper support shelf between the preliminary installing rack of a first steelframe and two support respectively
Side supports structure between two side supports framves and preliminary installing rack, upper support shelf and two side supports frame compositions
Medial support framework, medial support framework is supported in follow-up excavation areas outside, installs simplicity and supports firm, and can be to follow-up
Excavation region carries out effective support, it is ensured that work progress is safe and reliable；Meanwhile, by upper support structure and two side supports
Structure is fastenedly connected with the just preliminary installing rack of a steelframe and is integrated, and can improve the overall steady of temporary support structure in hole further
Solidity, and just prop up the installation process of preliminary installing rack in steelframe owing to being now only completed, bottom link is not also installed, thus
Now just a steelframe is unclosed, and in using hole, preliminary installing rack can effectively be supported by temporary support structure, it is thus possible to effectively
Ensureing the supporting effect of preliminary installing rack, in hole, temporary support structure and a just steelframe are with the use of can be to excavating molding hole body
(i.e. the preliminary excavation hole body of Tunnel) carries out effective support, and supporting intensity is high, can ensure that Tunnel effect.
3, set up easy and labor intensity is low, saving of work and time.
4, using effect is good and practical value high, is laid in tunnel along longitudinal extension direction, tunnel including multiple before backward
Temporary support structure in the hole in hole, in each hole, temporary support structure is mounted on a first Zhi Gang that Tunnel carries out supporting
In frame；In each hole, temporary support structure is all fastenedly connected with the preliminary installing rack being positioned at outside it and is integrated, each described hole
Interior temporary support structure is all laid on same tunnel cross-section with the preliminary installing rack being positioned at outside it, thus this utility model
In temporary support structure is installed in preliminary installing rack in each hole used and it is fastenedly connected with preliminary installing rack and is integrated, by
It is the supporting construction that Tunnel is carried out preliminary bracing supporting in a just steelframe, and all just steelframe fastenings in Tunnel
Connecting as one, so making temporary support structure in all holes of the present utility model to be fastenedly connected is an entirety, and with
Just a steelframe with the use of, thus carry out supporting to excavating molding hole body.
In sum, this utility model simple in construction, reasonable in design and dismounting is easy, using effect is good, can with tunnel at the beginning of
Phase supporting construction matches and carries out supporting to excavating molding hole body, and follow-up excavation region can be carried out effective support.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is installation position schematic diagram of the present utility model.
Fig. 2 is holding state schematic diagram of the present utility model.
Description of reference numerals:
1 upper lateral part pilot tunnel；Sidepiece pilot tunnel in 2；3 following side pilot tunnels；
Cross-brace beam on 4；Cross-brace beam in 5；6 follow-up excavation regions；
7 arch pilot tunnels；Pilot tunnel in the middle part of 8-；9 get out of a predicament or an embarrassing situation excavation pilot tunnel；
9-1 Tunnel；Link bottom 10-1；10-2 arch springing steelframe；
10-3 steel arch-shelf；11-1 side supports frame；11-2 upper support shelf；
11-3 upper support post.
Detailed description of the invention
As shown in Figure 1 and Figure 2, this utility model includes multiple being laid in tunnel along longitudinal extension direction, tunnel before backward
Temporary support structure in the hole of hole 9-1, in each described hole, temporary support structure is mounted on one and carries out Tunnel 9-1
In first the steelframe protected；A described just steelframe includes the arch wall of Tunnel 9-1 carrying out the steel arch-shelf 10-3 of supporting, to Tunnel
The bottom link 10-1 and two, the left and right that carry out supporting bottom 9-1 are connected to steel arch-shelf 10-3 and bottom link 10-1
Between arch springing steelframe 10-2, two described arch springing steelframe 10-2 symmetries are laid in the left and right sides of bottom link 10-1, steel
Bow member 10-3 and the preliminary installing rack of two described just steelframes of described arch springing steelframe 10-2 composition；Prop up in each described hole temporarily
Support structure is all fastenedly connected with the described preliminary installing rack being positioned at outside it and is integrated, and in each described hole, temporary support structure is equal
It is laid on same tunnel cross-section with the described preliminary installing rack being positioned at outside it；
Described Tunnel 9-1 includes left side wall pilot tunnel, right side wall pilot tunnel, upper core cubsoil region pilot tunnel and is positioned on described
Excavation pilot tunnel 9 of getting out of a predicament or an embarrassing situation immediately below the pilot tunnel of Core Soil region, portion, described left side wall pilot tunnel is with described right side wall pilot tunnel symmetrically
Laying, described upper core cubsoil region pilot tunnel and excavation pilot tunnel 9 of getting out of a predicament or an embarrassing situation are respectively positioned on described left side wall pilot tunnel and right side wall pilot tunnel
Between；Described upper core cubsoil region pilot tunnel is divided into arch pilot tunnel 7 and is positioned at the middle part pilot tunnel 8 immediately below arch pilot tunnel 7；Described
Left side wall pilot tunnel, described right side wall pilot tunnel and arch pilot tunnel 7 form preliminary excavation hole body, Tunnel 9-1 is positioned at described tentatively
The region of excavation Ti Nei side, hole is follow-up excavation region 6；
In described hole, temporary support structure includes that two symmetries prop up the side supports being located at the left and right sides, follow-up excavation region
Frame 11-1, upper support shelf 11-2 being supported in follow-up excavation area top, be supported in above upper support shelf 11-2 with
Upper support structure between described preliminary installing rack and two are respectively supported at two described side supports frame 11-1 with described
Side supports structure between preliminary installing rack, two described side supports structures lay respectively at described left side wall pilot tunnel and described
In right side wall pilot tunnel, described upper support structure is positioned at arch pilot tunnel 7, described upper support shelf 11-2 and two described sidepieces
Bracing frame 11-1 forms medial support framework, and described medial support framework, described upper support structure and two described sidepieces prop up
Support structure is all laid on same vertical plane.
In the present embodiment, two described side supports structures are symmetrically laid.
In the present embodiment, the left and right sides wall in described follow-up excavation region is curved wall, described side supports frame 11-
1 is curved support frame.
Actual adding man-hour, described upper support structure includes multiple upper support post 11-3 laid from left to right, described
The bottom support of upper support post 11-3 is in upper support shelf 11-2 and its top braces is on described preliminary installing rack.And
And, the top of described upper support post 11-3 is all supported in the arch of steel arch-shelf 10-3.
In the present embodiment, described upper support structure includes three described upper support post 11-3, three described tops
Support column 11-3 includes that a midfoot support post being supported in top in the middle part of upper support shelf 11-2 and two symmetries are laid in institute
Stating the side supports post of the midfoot support post left and right sides, two described side supports posts are respectively supported at upper support shelf 11-2
Above the left and right sides；
Described midfoot support post is vertical support column；Two described side supports posts are curved support post and the two difference
It is supported in above two described side supports frame 11-1, each described side supports frame 11-1 all described with the side of being supported on
Side supports post connects one arc support of formation.
Time actually used, can according to specific needs, to upper support post 11-3's included in described upper support structure
The installation position of quantity and each upper support post 11-3 adjusts accordingly respectively.
Each described side supports structure all includes the cross-brace beam that multiple tracks is from top to bottom laid, described cross-brace beam
Lay in level, the inside and outside two ends of described cross-brace beam be respectively supported at side supports frame 11-1 and described preliminary installing rack it
Between.Further, the outer end of described cross-brace beam is supported in steel arch-shelf 10-3 sidepiece.
In the present embodiment, described left side wall pilot tunnel and right side wall pilot tunnel are the most from top to bottom divided into upper lateral part pilot tunnel 1, middle sidepiece
Pilot tunnel 2 and following side pilot tunnel 3.Thus, the excavated section of institute's construction tunnel includes 9 pilot tunnels, the excavation of institute's construction tunnel are executed
Work method is two side-wall pilot tunnel, and uses nine excavations, also referred to as nine pilot tunnel methods of double side wall.
Each described side supports structure all includes twice cross-brace beam, and cross-brace beam described in twice is respectively positioned at
Upper cross-brace beam bottom upper lateral part pilot tunnel 14 and be positioned at the middle cross-brace beam 4 bottom middle sidepiece pilot tunnel 2.
Time actually used, can according to specific needs, to the number of cross-brace beam included by each described side supports structure
The installation position of amount and each road cross-brace beam adjusts accordingly respectively.
In the present embodiment, described upper support post 11-3 is I-steel.Described cross-brace beam is I-steel.Further, institute
State side supports frame 11-1 and upper support shelf 11-2 is I-steel.
Actual add man-hour, described upper support post 11-3, described cross-brace beam, side supports frame 11-1 and upper support
Frame 11-2 can also use other type of shaped steel rod member.
During practice of construction, first along longitudinal extension direction, tunnel by the backward front described left side wall pilot tunnel to Tunnel 9-1, institute
State right side wall pilot tunnel and arch pilot tunnel 7 excavate respectively, the described left side wall pilot tunnel excavated, described right side wall pilot tunnel and
Arch pilot tunnel 7 forms described preliminary excavation hole body；Preliminary excavation hole body is carried out before backward along longitudinal extension direction, tunnel again
Preliminary bracing is constructed, and completes the installation process of multiple described just described preliminary installing rack of a steelframe, multiple described just steelframe
Described preliminary installing rack between the longitudinally connected part laid along longitudinal extension direction, tunnel by multiple tracks be fastenedly connected and be integrated,
Described longitudinally connected part is longitudinal reinforcement；Meanwhile, in the described preliminary installing rack of each described just steelframe, it is respectively mounted one
Temporary support structure in described hole, the most just completes installation process of the present utility model.Along longitudinal extension direction, tunnel by backward
Before the front secondary lining to described preliminary excavation hole body is constructed, first by backward front in temporary support structure in described hole
Described upper support structure and two described side supports structures remove respectively.Further, along longitudinal extension direction, tunnel
Before follow-up excavation region 6 being carried out excavation construction before backward, first by before backward in temporary support structure in described hole
Described medial support framework is removed.
The above, be only preferred embodiment of the present utility model, not impose any restrictions this utility model, every
Any simple modification, change and equivalent structure change above example made according to this utility model technical spirit, the most still
Belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. a tunnel and Double side heading method excavation construction temporary supporting system, it is characterised in that: include multiple vertical along tunnel
To bearing of trend by being laid in temporary support structure in the hole of Tunnel (9-1), temporary support knot in each described hole before backward
Structure is mounted in a first steelframe that Tunnel (9-1) carries out supporting；A described just steelframe includes Tunnel (9-1)
Arch wall carry out the steel arch-shelf (10-3) of supporting, Tunnel (9-1) bottom carried out bottom link (10-1) and the left side of supporting
Right two arch springing steelframes (10-2) being connected between steel arch-shelf (10-3) and bottom link (10-1), two described arches
Foot steelframe (10-2) symmetry is laid in the left and right sides of bottom link (10-1), steel arch-shelf (10-3) and two described arch springing steel
Frame (10-2) forms the preliminary installing rack of a described just steelframe；In each described hole temporary support structure all be positioned at outside it
Described preliminary installing rack is fastenedly connected and is integrated, in each described hole temporary support structure all be positioned at outside it described tentatively
Installing rack is laid on same tunnel cross-section；
Described Tunnel (9-1) includes left side wall pilot tunnel, right side wall pilot tunnel, upper core cubsoil region pilot tunnel and is positioned at described top
Excavation pilot tunnel (9) of getting out of a predicament or an embarrassing situation immediately below the pilot tunnel of Core Soil region, described left side wall pilot tunnel is with described right side wall pilot tunnel symmetrically
Laying, described upper core cubsoil region pilot tunnel and excavation pilot tunnel (9) of getting out of a predicament or an embarrassing situation are respectively positioned on described left side wall pilot tunnel and lead with right side wall
Between hole；Described upper core cubsoil region pilot tunnel is divided into arch pilot tunnel (7) and is positioned at the middle part pilot tunnel immediately below arch pilot tunnel (7)
(8)；Described left side wall pilot tunnel, described right side wall pilot tunnel and arch pilot tunnel (7) composition preliminary excavation hole body, in Tunnel (9-1)
The region being positioned at Ti Nei side, described preliminary excavation hole is follow-up excavation region (6)；
In described hole, temporary support structure includes that two symmetries prop up the side supports frame being located at the left and right sides, follow-up excavation region
(11-1), one is supported in the upper support shelf (11-2) of follow-up excavation area top, is supported in upper support shelf (11-2)
Upper support structure between square and described preliminary installing rack and two are respectively supported at two described side supports framves (11-1)
And the side supports structure between described preliminary installing rack, two described side supports structures lay respectively at described left side wall pilot tunnel
With in described right side wall pilot tunnel, described upper support structure is positioned at arch pilot tunnel (7), described upper support shelf (11-2) and two
Individual described side supports frame (11-1) composition medial support framework, described medial support framework, described upper support structure and two
Individual described side supports structure is all laid on same vertical plane.
2. according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 1, it is characterised in that: two
Individual described side supports structure is symmetrically laid.
3., according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 1 or 2, its feature exists
In: the left and right sides wall in described follow-up excavation region is curved wall, and described side supports frame (11-1) is curved support frame.
4. according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 3, it is characterised in that: institute
State upper support structure and include multiple upper support post (11-3) laid from left to right, the end of described upper support post (11-3)
Portion is supported in upper support shelf (11-2), and above and its top braces is on described preliminary installing rack.
5. according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 4, it is characterised in that: institute
State upper support structure and include that three described upper support posts (11-3), three described upper support posts (11-3) include one
It is supported in the midfoot support post above upper support shelf (11-2) middle part and two symmetries are laid in about described midfoot support post
The side supports post of both sides, two described side supports posts are respectively supported at above the left and right sides of upper support shelf (11-2)；
Described midfoot support post is vertical support column；Two described side supports posts are curved support post and the two supports respectively
In two described side supports framves (11-1) top, each described side supports frame (11-1) all with the side of being supported on
Described side supports post connects one arc support of formation.
6. according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 4, it is characterised in that: institute
Stating upper support post (11-3) is I-steel.
7., according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 1 or 2, its feature exists
In: each described side supports structure all includes the cross-brace beam that multiple tracks is from top to bottom laid, and described cross-brace beam is water
Plain cloth sets, the inside and outside two ends of described cross-brace beam be respectively supported at side supports frame (11-1) and described preliminary installing rack it
Between.
8. according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 7, it is characterised in that: institute
State left side wall pilot tunnel and be the most from top to bottom divided into upper lateral part pilot tunnel (1), middle sidepiece pilot tunnel (2) and following side pilot tunnel with right side wall pilot tunnel
(3)；
Each described side supports structure all includes twice cross-brace beam, and cross-brace beam described in twice is respectively positioned at upside
The upper cross-brace beam (4) of portion's pilot tunnel (1) bottom and be positioned at the middle cross-brace beam (4) bottom middle sidepiece pilot tunnel (2).
9. according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 7, it is characterised in that: institute
Stating cross-brace beam is I-steel.
10., according to the tunnel and Double side heading method excavation construction temporary supporting system described in claim 1 or 2, its feature exists
In: described side supports frame (11-1) and upper support shelf (11-2) are I-steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876760.3U CN205876360U (en) | 2016-08-12 | 2016-08-12 | Interim support system is used in tunnel two side wall drift method excavation construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620876760.3U CN205876360U (en) | 2016-08-12 | 2016-08-12 | Interim support system is used in tunnel two side wall drift method excavation construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106988757A (en) * | 2017-04-14 | 2017-07-28 | 中铁四局集团有限公司 | The double -side approach construction technology of reserved rock pillar and hanging by bolt combination |
| CN108442943A (en) * | 2018-03-05 | 2018-08-24 | 北京市政建设集团有限责任公司 | A kind of branch-cut bridge section tunnel and Double side heading method construction method |
| CN109139021A (en) * | 2018-11-01 | 2019-01-04 | 中铁十八局集团有限公司 | A kind of more pilot tunnel Construction Organization Methods of multi-step |
| CN109973123A (en) * | 2019-03-28 | 2019-07-05 | 西安建筑科技大学 | A kind of multiple-arch tunnel middle drift gib arch method for dismounting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988757A (en) * | 2017-04-14 | 2017-07-28 | 中铁四局集团有限公司 | The double -side approach construction technology of reserved rock pillar and hanging by bolt combination |
| CN108442943A (en) * | 2018-03-05 | 2018-08-24 | 北京市政建设集团有限责任公司 | A kind of branch-cut bridge section tunnel and Double side heading method construction method |
| CN109139021A (en) * | 2018-11-01 | 2019-01-04 | 中铁十八局集团有限公司 | A kind of more pilot tunnel Construction Organization Methods of multi-step |
| CN109973123A (en) * | 2019-03-28 | 2019-07-05 | 西安建筑科技大学 | A kind of multiple-arch tunnel middle drift gib arch method for dismounting |
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