CN109594992A - A kind of juxtaposition tunneling method - Google Patents
A kind of juxtaposition tunneling method Download PDFInfo
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- CN109594992A CN109594992A CN201910041693.1A CN201910041693A CN109594992A CN 109594992 A CN109594992 A CN 109594992A CN 201910041693 A CN201910041693 A CN 201910041693A CN 109594992 A CN109594992 A CN 109594992A
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- tunnel
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- threaded list
- grouting
- fitting groove
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Classifications
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- 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
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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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Abstract
The invention discloses a kind of juxtaposition tunneling methods, including following methods: completing the preparation built to constructing tunnel first, then determine No.1 line a and the position that the tunnel No.1 line b, No. two line a and No. two line b tunnelings excavate；Principle, which is built, according to the construction of " getting on, get off " carries out tunneling；First No. two threaded list roads are excavated, then excavate No.1 threaded list road；The four threaded list roads of No.1 line a, No.1 line b, No. two line a and No. two line b are dug through according to above-mentioned construction procedure, carry out building for juxtaposition tunnel.The present invention can use the sequence of construction of " getting on, get off ", build into the tunnel for being overlapped and intersecting up and down, tunnel is allowed to have the function of the station transfer of dual-layer Parallel overlapping, and utilize the reinforcing mode of slip casting in ground mixing pile and hole, the structural strength for improving tunnel entirety is conducive to the long-time service in tunnel.
Description
Technical field
The present invention relates to tunneling method field, specially a kind of juxtaposition tunneling method.
Background technique
Tunnel refers to the channel digged up in existing building or Tu Shi mechanism, is the engineering construction being embedded in stratum
Object, tunnel can be divided into traffic tunnel, Hydraulic Tunnel, municipal tunnel and mining tunnel；The structure in tunnel include main building object and
Auxiliary device two parts, main building object are made of barrel and portal, and auxiliary device includes refuge chamber, fire fighting device, meets an urgent need and lead to
News and guarded drainage facility, also special ventilation and lighting apparatus in tunnel；Working environment in tunnel needs illumination of divulging information；It is high
Emergency exit should be arranged in fast long Railway Tunnel and super long tunnel in conjunction with service gallery situation, should be set above emergency exit nameplate and
Emergency Light facility.
With under the situation of High-speed Urbanization, to alleviate traffic pressure and rationally utilizing Underground Space Resource, city
All for attracting attention, the following this kind of Tunnel Engineering can be continuously increased for the rapid transformation of road and the construction of city integrated piping lane,
Tunnel construction can select most reasonable construction method early period according to the actual situation, have open cut for the common method of tunnel construction
Method, shield method, push bench process and shallow burial hidden digging etc.；Tunnel is for building the facilities such as Crane Rail and railway.
Present tunnel overall structural strength is poor, and the service life in tunnel is lower, and is all single layer Parallel Tunnel, tunnel
Relatively narrow of the carriage way station built has the function of that same track is ridden, and can not realize the function of same track area transfer
Energy.
Summary of the invention
The purpose of the present invention is to provide a kind of juxtaposition tunneling methods, to solve to propose in above-mentioned background technique
Tunnel overall structural strength it is poor, tunnel service life lower problem.
To achieve the above object, the invention provides the following technical scheme:
A kind of juxtaposition tunneling method, including following methods:
S1, the preparation built to constructing tunnel is completed first, then determine No.1 line a and the tunnel No.1 line b, No. two lines
The position that a and No. two line b tunneling excavates；Wherein, No.1 threaded list road excavates position No. two line tunnel excavation positions
Top；The position in the tunnel No.1 line b is in the top in No. two tunnels line b, and the position in No. two tunnels line a is in the upper of the tunnel No.1 line b
Side, the position in the tunnel No.1 line a is in the top of No. two line a.
S2, principle progress tunneling is built according to the construction of " getting on, get off "；First No. two threaded list roads are excavated, then
Excavate No.1 threaded list road；
(1), the excavation step in No. two threaded list roads are as follows: 1) the excavation position in No. two threaded list roads is excavated, in massif
" ∏ " shape fitting groove is dug out at layer, fitting groove is excavated using incremental launching method, outward transport of being unearthed；2) precast concrete is transported
It send in installation to fitting groove, component docking fastening is spliced into frame shape tunnel main structure, and tunnel main structure is mounted on fitting groove
Lower part；3) cement mortar is injected toward the gap between fitting groove and tunnel main structure；4) the framework of tunnel main structure it
Between excavate No. two threaded list roads the space soil body；5) two lining structures are applied in No. two line tunnel space soil bodys of excavation, built attached
Belong to structure and electromechanical equipment is installed.
(2), the excavation step in No.1 threaded list road are as follows: 1) the excavation position in No.1 threaded list road is excavated, in massif
" ∏ " shape fitting groove is dug out at layer, fitting groove is excavated using incremental launching method, outward transport of being unearthed；2) precast concrete is transported
It send in installation to fitting groove, component docking fastening is spliced into frame shape tunnel main structure, and tunnel main structure is mounted on fitting groove
Lower part；3) cement mortar is injected toward the gap between fitting groove and tunnel main structure；4) the framework of tunnel main structure it
Between excavate No.1 threaded list road the space soil body；5) two lining structures are applied in the No.1 line tunnel space soil body of excavation, built attached
Belong to structure and electromechanical equipment is installed.
S3, No.1 line a, No.1 line b, No. two line a and No. two line b four threaded list roads in driving, institute among four threaded list roads
The folder soil body needs to carry out reinforcement processing；No.1 line a, No.1 line b, No. two line a and No. two line b four threaded list roads mutually overlap to be formed
The position that overlaps of interchange tunnels, four threaded list roads is d1, d2 and d3；The depth of the rail level embedment in tunnel below the place of overlapping: d1 is
11.8m, d2 20.8m, d3 23.9m；In order to ensure the safety of constructing tunnel, clear distance is in 1-6m between interchange tunnels.
S4, No.1 line a, No.1 line b, No. two line a and No. two tunnels line b form the overlapping tunnel of c1 and c2 in driving,
In c1 and the c2 tunnel construction sections of overlapping, using the sequence of construction to get on, get off, No.1 line and No. two two tunnel clear distances of line are less than 3m sections,
Tunnel is reinforced using the reinforcing mode of ground mixing pile, 6m is less than greater than 3m using the reinforcing mode pair of slip casting in hole
Tunnel is reinforced；For grouting and reinforcing section, slip casting is carried out to the folded soil body by lower part tunnel, in lower part tunnel excavating process
In, synchronous grouting amount and grouting pressure should be first increased, to guarantee the density of tunnel surrounding soil, in the tunnel piercing of top,
Increase synchronous grouting and secondary grouting amount；Carry out pre-pouring grout consolidation process simultaneously in lower part tunnel and top constructing tunnel.
S5, the four threaded list roads that No.1 line a, No.1 line b, No. two line a and No. two line b are dug through according to above-mentioned construction procedure,
Carry out building for juxtaposition tunnel.
Preferably, it in the tunneling process in No. two threaded list roads, needs to increase cement mortar injection rate and grouting pressure, protects
Demonstrate,prove the close property of reality of the soil body in tunnel；Synchronous grouting and secondary grouting amount are increased in No.1 line constructing tunnel, grouting mode is knot
The form of rigid two fluid grouting.
Preferably, in step sl, the preparation that constructing tunnel is built are as follows: 1) collect the weather on tunneling ground in advance
Climatic information, 2) the required safeguard procedures taken when constructing tunnel are determined according to the concrete condition of constructing tunnel engineering, 3) choosing
The raw material such as purchasing and merging storage high-performance such as cement, metaling, steel, select suitable material match ratio.
Preferably, in step s3, (1) between interchange tunnels clear distance be less than 3m sections, using ground mixing pile to tunnel into
Row is reinforced；Cement mixing method planar range surrounds region by the outer 3m of upper and lower interchange tunnels shield outer contour, and stake top is higher by
Portion tunnel structure top 3m, stake bottom is than lower part tunnel structure bottom depth 1.5m, mixing pile stake diameter 600mm, occlusion amount 150mm, after reinforcing
Soil body unconfined compressive strength be not less than 1.0Mpa；(2) at 3m-6m sections of interchange tunnels, using slip casting in Tunnel to tunnel
It is reinforced, from leading construction lower part tunnel to Stabilizing Grout, and reserved secondary grouting hole, greater than 6m sections adjacent tunnels are applied
Work, it is only necessary to reinforce tracking grouting, guarantee slip casting effect；The Grouting Pipe of certain length is set in secondary grouting hole, is passed through
Grouting Pipe carries out slip casting to stratum, improves tunnel soil body intensity.
The beneficial effects of the present invention are:
1, the present invention can use the sequence of construction of " getting on, get off ", and the tunnel for being overlapped and intersecting up and down is built into construction,
It allows tunnel to have the function of the station transfer of dual-layer Parallel overlapping, realizes the function of same track area transfer, and stirred using ground
The reinforcing mode for mixing slip casting in stake and hole, improves the structural strength of tunnel entirety, is conducive to the long-time service in tunnel.
Detailed description of the invention
Fig. 1 is schematic diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution:
A kind of juxtaposition tunneling method, including following methods:
S1, the preparation built to constructing tunnel is completed first, then determine No.1 line a and the tunnel No.1 line b, No. two lines
The position that a and No. two line b tunneling excavates；Wherein, No.1 threaded list road excavates position No. two line tunnel excavation positions
Top；The position in the tunnel No.1 line b is in the top in No. two tunnels line b, and the position in No. two tunnels line a is in the upper of the tunnel No.1 line b
Side, the position in the tunnel No.1 line a is in the top of No. two line a；
S2, principle progress tunneling is built according to the construction of " getting on, get off "；First No. two threaded list roads are excavated, then
Excavate No.1 threaded list road；
(1), the excavation step in No. two threaded list roads are as follows: 1) the excavation position in No. two threaded list roads is excavated, in massif
" ∏ " shape fitting groove is dug out at layer, fitting groove is excavated using incremental launching method, outward transport of being unearthed；2) precast concrete is transported
It send in installation to fitting groove, component docking fastening is spliced into frame shape tunnel main structure, and tunnel main structure is mounted on fitting groove
Lower part；3) cement mortar is injected toward the gap between fitting groove and tunnel main structure；4) the framework of tunnel main structure it
Between excavate No. two threaded list roads the space soil body；5) two lining structures are applied in No. two line tunnel space soil bodys of excavation, built attached
Belong to structure and electromechanical equipment is installed；
(2), the excavation step in No.1 threaded list road are as follows: 1) the excavation position in No.1 threaded list road is excavated, in massif
" ∏ " shape fitting groove is dug out at layer, fitting groove is excavated using incremental launching method, outward transport of being unearthed；2) precast concrete is transported
It send in installation to fitting groove, component docking fastening is spliced into frame shape tunnel main structure, and tunnel main structure is mounted on fitting groove
Lower part；3) cement mortar is injected toward the gap between fitting groove and tunnel main structure；4) the framework of tunnel main structure it
Between excavate No.1 threaded list road the space soil body；5) two lining structures are applied in the No.1 line tunnel space soil body of excavation, built attached
Belong to structure and electromechanical equipment is installed；
S3, No.1 line a, No.1 line b, No. two line a and No. two line b four threaded list roads in driving, institute among four threaded list roads
The folder soil body needs to carry out reinforcement processing；No.1 line a, No.1 line b, No. two line a and No. two line b four threaded list roads mutually overlap to be formed
The position that overlaps of interchange tunnels, four threaded list roads is d1, d2 and d3；The depth of the rail level embedment in tunnel below the place of overlapping: d1 is
11.8m, d2 20.8m, d3 23.9m；In order to ensure the safety of constructing tunnel, clear distance is in 1-6m between interchange tunnels；
S4, No.1 line a, No.1 line b, No. two line a and No. two tunnels line b form the overlapping tunnel of c1 and c2 in driving,
In c1 and the c2 tunnel construction sections of overlapping, using the sequence of construction to get on, get off, No.1 line and No. two two tunnel clear distances of line are less than 3m sections,
Tunnel is reinforced using the reinforcing mode of ground mixing pile, 6m is less than greater than 3m using the reinforcing mode pair of slip casting in hole
Tunnel is reinforced；For grouting and reinforcing section, slip casting is carried out to the folded soil body by lower part tunnel, in lower part tunnel excavating process
In, synchronous grouting amount and grouting pressure should be first increased, to guarantee the density of tunnel surrounding soil, in the tunnel piercing of top,
Increase synchronous grouting and secondary grouting amount；Carry out pre-pouring grout consolidation process simultaneously in lower part tunnel and top constructing tunnel.
S5, the four threaded list roads that No.1 line a, No.1 line b, No. two line a and No. two line b are dug through according to above-mentioned construction procedure,
Carry out building for juxtaposition tunnel.
Specifically, needing to increase cement mortar injection rate and grouting pressure in the tunneling process in No. two threaded list roads, protect
Demonstrate,prove the close property of reality of the soil body in tunnel；Synchronous grouting and secondary grouting amount are increased in No.1 line constructing tunnel, grouting mode is knot
The form of rigid two fluid grouting.
Specifically, in step sl, the preparation that constructing tunnel is built are as follows: 1) collect the weather on tunneling ground in advance
Climatic information, 2) the required safeguard procedures taken when constructing tunnel are determined according to the concrete condition of constructing tunnel engineering, 3) choosing
The raw material such as purchasing and merging storage high-performance such as cement, metaling, steel, select suitable material match ratio.
Specifically, in step s3, (1) clear distance between interchange tunnels is less than 3m sections, using ground mixing pile to tunnel into
Row is reinforced；Cement mixing method planar range surrounds region by the outer 3m of upper and lower interchange tunnels shield outer contour, and stake top is higher by
Portion tunnel structure top 3m, stake bottom is than lower part tunnel structure bottom depth 1.5m, mixing pile stake diameter 600mm, occlusion amount 150mm, after reinforcing
Soil body unconfined compressive strength be not less than 1.0Mpa；(2) at 3m-6m sections of interchange tunnels, using slip casting in Tunnel to tunnel
It is reinforced, from leading construction lower part tunnel to Stabilizing Grout, and reserved secondary grouting hole, greater than 6m sections adjacent tunnels are applied
Work, it is only necessary to reinforce tracking grouting, guarantee slip casting effect；The Grouting Pipe of certain length is set in secondary grouting hole, is passed through
Grouting Pipe carries out slip casting to stratum, improves tunnel soil body intensity.
Construction principle of the present invention according to " getting on, get off ", overall construction procedure are as follows: lower section tunneling shield driving, interlayer soil
Secondary grouting is reinforced in body slip casting and hole, is reinforced on the inside of the tunnel of lower section, and top tunneling shield driving, top tunnel carries out slip casting and adds
Gu.
Wherein, after the completion of lower section constructing tunnel within the scope of overlapping tunnel, the interlayer soil body is carried out in tunnel from below
Slip casting, and above constructing tunnel when, also will to the interlayer soil body carry out slip casting.
The present invention can use the sequence of construction of " getting on, get off ", and construction is built into the tunnel for being overlapped and intersecting up and down, allowed
Tunnel has the function of the station transfer of dual-layer Parallel overlapping, realizes the function of same track area transfer, and is stirred using ground
The reinforcing mode of stake and slip casting in hole, improves the structural strength of tunnel entirety, is conducive to the long-time service in tunnel.
The intensity of the interlayer soil body when juxtaposition tunneling method is in order to guarantee top constructing tunnel, avoids top tunnel
Occur unstability in road tunneling process, sink；Increase reserved injected hole on the inside of the tunnel in lower section tunnel, to increase the note of the interlayer soil body
Slurry amount.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understand without departing from the principles and spirit of the present invention can to these embodiments carry out it is a variety of variation, modification, replacement and
Modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of juxtaposition tunneling method, it is characterised in that: including following methods:
S1, complete the preparation built to constructing tunnel first, then determine No.1 line a and the tunnel No.1 line b, No. two line a with
The position that No. two line b tunnelings excavate；Wherein, No.1 threaded list road excavates position in the upper of No. two line tunnel excavation positions
Side；The position in the tunnel No.1 line b in the top in No. two tunnels line b, the position in No. two tunnels line a in the top in the tunnel No.1 line b,
The position in the tunnel No.1 line a is in the top of No. two line a；
S2, principle progress tunneling is built according to the construction of " getting on, get off "；First No. two threaded list roads are excavated, then are excavated
No.1 threaded list road；
(1), the excavation step in No. two threaded list roads are as follows: 1) the excavation position in No. two threaded list roads is excavated, at massif stratum
" ∏ " shape fitting groove is dug out, fitting groove is excavated using incremental launching method, outward transport of being unearthed；2) precast concrete is transported and is pacified
It is filled in fitting groove, component docking fastening is spliced into frame shape tunnel main structure, and tunnel main structure is mounted on fitting groove lower part；
3) cement mortar is injected toward the gap between fitting groove and tunnel main structure；4) it is excavated between the framework of tunnel main structure
The space soil body in No. two threaded list roads；5) two lining structures are applied in No. two line tunnel space soil bodys of excavation, builds accessory structure
And electromechanical equipment is installed；
(2), the excavation step in No.1 threaded list road are as follows: 1) the excavation position in No.1 threaded list road is excavated, at massif stratum
" ∏ " shape fitting groove is dug out, fitting groove is excavated using incremental launching method, outward transport of being unearthed；2) precast concrete is transported and is pacified
It is filled in fitting groove, component docking fastening is spliced into frame shape tunnel main structure, and tunnel main structure is mounted on fitting groove lower part；
3) cement mortar is injected toward the gap between fitting groove and tunnel main structure；4) it is excavated between the framework of tunnel main structure
The space soil body in No.1 threaded list road；5) two lining structures are applied in the No.1 line tunnel space soil body of excavation, builds accessory structure
And electromechanical equipment is installed；
S3, No.1 line a, No.1 line b, No. two line a and No. two line b four threaded list roads in driving, among four threaded list roads folded by soil
Body needs to carry out reinforcement processing；No.1 line a, No.1 line b, No. two line a and No. two line b four threaded list roads mutually overlap to be formed and overlap
The position that overlaps in tunnel, four threaded list roads is d1, d2 and d3；It overlaps and locates the depth that the rail level in lower section tunnel is embedded to: d1 11.8m,
D2 is 20.8m, d3 23.9m；In order to ensure the safety of constructing tunnel, clear distance is in 1-6m between interchange tunnels；
S4, No.1 line a, No.1 line b, No. two line a and No. two tunnels line b form the overlapping tunnel of c1 and c2 in driving, in weight
Folded c1 and c2 tunnel construction sections, using the sequence of construction to get on, get off, No.1 line and No. two two tunnel clear distances of line are less than 3m sections, use
The reinforcing mode of ground mixing pile reinforces tunnel, and 6m is less than greater than 3m using the reinforcing mode of slip casting in hole to tunnel
It is reinforced；For grouting and reinforcing section, slip casting is carried out to the folded soil body by lower part tunnel, in the tunnel excavating process of lower part,
Synchronous grouting amount and grouting pressure should be first increased, to guarantee the density of tunnel surrounding soil, in the tunnel piercing of top, is increased
Synchronous grouting and secondary grouting amount；Carry out pre-pouring grout consolidation process simultaneously in lower part tunnel and top constructing tunnel.
S5, the four threaded list roads that No.1 line a, No.1 line b, No. two line a and No. two line b are dug through according to above-mentioned construction procedure are carried out
Juxtaposition tunnel is built.
2. a kind of juxtaposition tunneling method according to claim 1, it is characterised in that: the pick in No. two threaded list roads
Into, needing to increase in the process cement mortar injection rate and grouting pressure, guarantee the close property of reality of the soil body in tunnel；In No.1 threaded list
Synchronous grouting and secondary grouting amount are increased in road construction, grouting mode is the form for tying rigid two fluid grouting.
3. a kind of juxtaposition tunneling method according to claim 1, it is characterised in that: in step sl, tunnel
The preparation that construction is built are as follows: 1) the preparatory synoptic climate information of collecting tunneling ground, 2) according to constructing tunnel engineering
Concrete condition determines the required safeguard procedures taken when constructing tunnel, 3) it chooses and stores high-performance such as cement, metaling, steel
The raw material such as material select suitable material match ratio.
4. a kind of juxtaposition tunneling method according to claim 1, it is characterised in that: in step s3, (1) exists
Clear distance is less than 3m sections between interchange tunnels, is reinforced using ground mixing pile to tunnel；Cement mixing method planar range is upper and lower
Outer the surrounded region 3m of interchange tunnels shield outer contour, stake top are higher by top tunnel structure top 3m, and stake bottom is than lower part tunnel knot
Structure bottom depth 1.5m, mixing pile stake diameter 600mm, occlusion amount 150mm, the soil body unconfined compressive strength after reinforcing are not less than
1.0Mpa；(2) at 3m-6m sections of interchange tunnels, tunnel is reinforced using slip casting in Tunnel, from leading construction lower part tunnel
To Stabilizing Grout, and reserved secondary grouting hole, it is greater than 6m sections of adjacent tunnel constructions, it is only necessary to reinforce tracking grouting, guarantee
Slip casting effect；The Grouting Pipe of certain length is set in secondary grouting hole, slip casting is carried out to stratum by Grouting Pipe, improves tunnel
Road soil strength.
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| CN110306986A (en) * | 2019-05-09 | 2019-10-08 | 深圳市综合交通设计研究院有限公司 | A kind of anti-cut construction method of underground interchange fork node Tunneling by mining method |
| CN110645005A (en) * | 2019-10-30 | 2020-01-03 | 中铁开发投资集团有限公司 | High-water-rich round gravel stratum earth pressure balance shield rapid tunneling construction method |
| CN112459804A (en) * | 2020-11-25 | 2021-03-09 | 中交二航局第二工程有限公司 | Synchronous tunneling construction method for overlapped tunnels |
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Application publication date: 20190409 |