CN106522989A - Air shaft structure and shield excavation parallel construction method - Google Patents
Air shaft structure and shield excavation parallel construction method Download PDFInfo
- Publication number
- CN106522989A CN106522989A CN201610822445.7A CN201610822445A CN106522989A CN 106522989 A CN106522989 A CN 106522989A CN 201610822445 A CN201610822445 A CN 201610822445A CN 106522989 A CN106522989 A CN 106522989A
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- ventilating shaft
- shield
- foundation ditch
- construction
- parallel construction
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 238000009412 basement excavation Methods 0.000 title abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 24
- 238000007569 slipcasting Methods 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000004567 concrete Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 10
- 239000010426 asphalt Substances 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses an air shaft structure and shield excavation parallel construction method. According to the method, the majority of an envelope enclosure of an air shaft is constructed firstly, and then continuous construction station-crossing of an air shaft main structure is completed successively through tunnel excavation, so that the technical problem that the intermediate air shaft and shield tunnel parallel construction cannot be conducted, and a construction period lagged effect is caused is solved.
Description
Technical field
The present invention relates to shield-tunneling construction field.It is more particularly related to a kind of ventilating shaft structure and shield driving are flat
The method of row construction.
Background technology
As urban rail transit in China construction is developed rapidly, shield method becomes the main engineering method of constructing metro tunnel.Shield
Generally require to arrange ventilating shaft in tunnel piercing interval, cause to generally require during Shield Construction Method Used by middle ventilating shaft.Shield is normal
It is " tunnel after first standing " that rule pass through middle ventilating shaft method, and the method is to apply portal after the completion of ventilating shaft main structure construction and held
Head receive after reinforcing shield machine and it is secondary in middle ventilating shaft originate, or shield pick is completed in advance using " after first tunnel stand " engineering method
Middle ventilating shaft is applied after entering construction.Conventional method requires that middle ventilating shaft is laid guide rail after completing to receive portal and termination reinforcing and dug
Except portal is secondary originate after can just proceed shield-tunneling construction, the shield driving duration may be affected；" standing after first tunnel " method can have
The effect reduction of erection time, but in rich water sandy gravel stratum after apply middle ventilating shaft and there is larger seepage and risk of gushing, need to take it is complicated plus
Gu and stability when ventilating shaft agent structure is applied is applied after dewatering measure ensures.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantage that at least will be described later.
It is a still further object of the present invention to provide a kind of shield machine passes through wind of constructing in advance under internal and external pressure balance state
Well building enclosure, the method for reaching ventilating shaft structure and shield driving parallel construction.
In order to realize these purposes of the invention and further advantage, there is provided a kind of ventilating shaft structure and shield driving are flat
The method of row construction, comprises the following steps：
S1, ventilating shaft foundation ditch are supported to substrate when digging, and side wall of constructing is located at orlop and supports following part and base plate,
The height that boundary zone embedded backfill material are supported to orlop is laid on side wall；
S2, the template for removing plate during orlop is supported and laid in ventilating shaft foundation ditch according to shield tunnel design, bury back
The template of filler to the middle plate simultaneously lays boundary zone on backfill material；
S3, the bottom-up remainder for pouring side wall in ventilating shaft foundation ditch successively, support and middle plate, in ventilating shaft foundation ditch
Recharge water, it is ensured that Water And Earth Pressures balance inside and outside ventilating shaft foundation ditch；And
S4, shield machine extract the recharge water in foundation ditch by material driving assembled shield duct piece is backfilled after passing through ventilating shaft foundation ditch,
Backfill material and shield duct piece is removed, portal and ventilating shaft remaining structure is finally applied.
Preferably, step S1 is further comprising the steps of：
Digging to substrate, two row's central posts are set in the middle part of ventilating shaft foundation ditch, the external boundary of central post described in any side and
With the digging that the spacing of the inner boundary of the side wall of its homonymy meets shield machine by space, arrange U-shaped outside the ventilating shaft foundation ditch
Ground-connecting-wall and dewatering well；
Wherein, the boundary zone is asphalt felt.
Preferably, the backfill material is included positioned at the M5 mortars of two rows neutrality intercolumniation and positioned at any side central post
External boundary and with the plastic concrete between the inner boundary of the side wall of its homonymy.
Preferably, in step S4, when tunneling apart from 2 rings in outer 5 rings of U-shaped ground-connecting-wall and ventilating shaft foundation ditch, increase is synchronous
The activity coefficient of slip casting, simultaneous grouting slurry mix micro-expanding agent；Apart from 2 rings in outer 4 rings of the U-shaped ground-connecting-wall of ventilating shaft and ventilating shaft per ring
Secondary grouting is carried out all, grouting sequence is to carry out slip casting from bottom to up, from right to left；Cement mortar and water glass is injected during secondary grouting
The double oar liquid of glass liquid.
Preferably, the section of jurisdiction of the close portal position of ventilating shaft foundation ditch is supplemented after in step S4, shield machine is passed through
Grouting and reinforcing.
Preferably, the construction of recharge water in ventilating shaft is extracted in step S4 for operating stage by stage, is monitored and is recorded foundation ditch
Recharge water level in inside and outside land movement situation control ventilating shaft, cuts backfill material simultaneously really from ventilating shaft agent structure two ends after the completion of drawing water
In guarantor tunnel, water leakage situation is controllable, carries out supplementing slip casting if uncontrollable.
Preferably, before step S4 shield duct piece in the ventilating shaft foundation ditch the small-sized disintegrating machine in reservation tear down section of jurisdiction lifting space,
Disintegrating machine is transported in tunnel after removing at least two endless tube pieces and completes the broken of remaining section of jurisdiction and hang out.
The present invention at least includes following beneficial effect：
1st, with sand and together with laying, asphalt felt is as boundary zone and rationally sets with side wall backfill plastotype concrete for ventilating shaft base plate
Put shield driving circuit, solve " after first tunnel stand " method need to adjust shield machine continuously tunnel circuit and get around central post technology it is difficult
Topic, the bottom steel for reducing side wall angle are supportted；Need not set up when setting up plate during one asphalt felt is isolated and constructed after the completion of backfill
Scaffold and laying bottom template.It is determined that suitably returning filling mixture ratio parameter, middle ventilating shaft of constructing afterwards can quickly cut and complete
Subsequent construction, realizes the whole machine of shield quickly through the parallel construction with middle ventilating shaft agent structure.
2nd, using various slip casting measures and grouting sequence reasonable in design, slip casting position and slurry material proportioning, mix swollen
Change machine strengthens slurry dilatancy effect and rapid hardening, and after solving " standing after first tunnel " method, in the middle of construction, ventilating shaft portal is prevented with tunnel shaft interface
Water problems, realizes middle ventilating shaft residue main body construction and shield driving parallel operations.
3rd, hang out after section of jurisdiction being removed with small-sized disintegrating machine and apply again portal, change traditional shield machine and shut down wait paving
Arrange in rail, ventilating shaft steel jacket box, originate the series of measures such as support receive and it is secondary originate the situation missed the stop, effectively shorten shield
Driving the duration, simplified and originated and has received portal external end head plain concrete wall and three axes agitating pile reinforcement process, saving engineering into
This.
In a word, missed the stop the method with middle ventilating shaft parallel construction using shield driving of the present invention, solve centre
The delayed technical barrier that shield acceptable conditionses cannot be provided on time of ventilating shaft construction speed, invented shield miss the stop it is flat with middle ventilating shaft
The new technology of row construction, optimizes portal termination reinforcement measure in ventilating shaft of knowing clearly, and realizes shield and misses the stop and originate without the need for secondary, letter
Construction technology is changed, has reduced construction cost and effectively shorten the duration, filled up the direct digging of shield machine and missed the stop and ventilating shaft
The technological gap of agent structure parallel construction, with good economic benefit and social benefit, this method is particularly well-suited to tunnel
When the larger termination consolidation effect of buried depth is difficult to ensure that, shield is by middle ventilating shaft excavation work.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is that shield of the present invention continuously tunnels the process flow frame by middle ventilating shaft and ventilating shaft parallelism structural construction method
Frame.
Fig. 2 is that shield continuously tunnels the generalized section missed the stop with ventilating shaft main structure body parallel construction.
Fig. 3 is the plane graph of Fig. 2.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description text
Word can be implemented according to this.
It should be noted that experimental technique described in following embodiments, if no special instructions, is conventional method, institute
Reagent and material is stated, if no special instructions, is commercially obtained；In describing the invention, term " horizontal ", " vertical
To ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", the instruction such as " outward " side
Position or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplify description,
Be not indicate or imply the device or element of indication must have specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.
As shown in figure 1, a kind of method that the present invention provides ventilating shaft structure and shield driving parallel construction, including following step
Suddenly：
S1, ventilating shaft foundation ditch are supported to substrate when digging, and side wall of constructing is located at orlop and supports following part and base plate,
The height that boundary zone embedded backfill material are supported to orlop is laid on side wall；
S2, the template for removing plate during orlop is supported and laid in ventilating shaft foundation ditch according to shield tunnel design, bury back
The template of filler to the middle plate simultaneously lays boundary zone on backfill material；
S3, the bottom-up remainder for pouring side wall in ventilating shaft foundation ditch successively, support and middle plate, in ventilating shaft foundation ditch
Recharge water, it is ensured that Water And Earth Pressures balance inside and outside ventilating shaft foundation ditch；And
S4, shield machine extract the recharge water in foundation ditch by material driving assembled shield duct piece is backfilled after passing through ventilating shaft foundation ditch,
Backfill material and shield duct piece is removed, portal and ventilating shaft remaining structure is finally applied.This method one can be solve the duration it is delayed,
Two can be to avoid once originating the risk for once receiving.
Step S1 is further comprising the steps of：
Digging to substrate, two row's central posts are set in the middle part of ventilating shaft foundation ditch, the external boundary of central post described in any side and
With the digging that the spacing of the inner boundary of the side wall of its homonymy meets shield machine by space, arrange U-shaped outside the ventilating shaft foundation ditch
Ground-connecting-wall and dewatering well；
Wherein, the boundary zone is asphalt felt.
The backfill material includes the M5 mortars and the external boundary positioned at any side central post positioned at two rows neutrality intercolumniation
And with the plastic concrete between the inner boundary of the side wall of its homonymy.
Increase filling out for synchronous grouting when tunneling apart from 2 rings in outer 5 rings of U-shaped ground-connecting-wall and ventilating shaft foundation ditch in step S4
Coefficient is filled, simultaneous grouting slurry mixes micro-expanding agent；Two are carried out apart from 2 rings in outer 4 rings of the U-shaped ground-connecting-wall of ventilating shaft and ventilating shaft all per ring
Secondary slip casting, grouting sequence are to carry out slip casting from bottom to up, from right to left；Cement mortar and waterglass liquid double oars is injected during secondary grouting
Liquid.
The section of jurisdiction of the close portal position of ventilating shaft foundation ditch is carried out supplementing slip casting after shield machine is passed through in step S4 and added
Gu.
The construction of recharge water in ventilating shaft is extracted in step S4 for operating stage by stage, monitors and record the soil body inside and outside foundation ditch
Recharge water level in misalignment control ventilating shaft, cuts backfill from ventilating shaft agent structure two ends after the completion of drawing water and expects and guarantee in tunnel
Water leakage situation is controllable, carries out supplementing slip casting if uncontrollable.
Before step S4 shield duct piece in the ventilating shaft foundation ditch the small-sized disintegrating machine in reservation tear down section of jurisdiction lifting space, remove at least
Disintegrating machine is transported in tunnel after two endless tube pieces and completes the broken of remaining section of jurisdiction and hang out.
The present invention provides the construction embodiment of a kind of ventilating shaft structure and shield driving parallel construction, as Figure 2-3, construction reason
Read, and realize the ventilating shaft building enclosure of the theory and antiseepage and draining safeguard and driving outside middle standing pillar design, termination
Process grout injection control measure.
Step S1, ventilating shaft building enclosure and neutral post design
S1.1, for need between 5 inner boundary of ventilating shaft building enclosure side wall and 13 external boundary of central post ensure shield continuously dig
Enter the space by middle ventilating shaft；
S1.2, neutral post design need to both can guarantee that ventilating shaft agent structure stability and rigidity requirement, can meet shield pick again
The radius of turn and the actual cornering ability of shield machine for entering fine adjustment of attitude requirement and tunnel centrage 16 is required.
Step S2, the construction flow process of ventilating shaft building enclosure and backfill
S2.1, excavation of foundation pit are constructed to the absolute altitude of bottom surface uplift pile 1 and base plate 3 under base plate, and the maintenance of base plate 3 is constructed side simultaneously
Wall waterproof and last one concrete support 8；
S2.2, the template for installing side wall 5, side wall 5 lay one layer of asphalt felt 4,13 Cast-in-situ Piles in Sand-filling of central post after the completion of constructing
Material 2, remaining position backfill plastic concrete 7；
S2.3, the template for removing plate 10 during last one concrete eight support is laid simultaneously；
The template of S2.4, backfill plastic concrete and sand material to middle plate 10, lays asphalt felt；
S2.5, successively bottom-up line production, set up full hall scaffold and are sequentially completed the remainder of side wall, concrete
Support the pouring construction with middle plate；
S2.6, facing down from original place is excavated to base plate position, 5 outer 2m of side wall construction 600mm thickness plain concretes wall 15 with
Building enclosure ground-connecting-wall 6 forms overlap joint and respectively arranges 2 mouthfuls of dewatering wells 14 in double track tunnel both sides, two ends totally 8 mouthfuls of dewatering wells.
Step S3, shield machine pass through front recharge water
S3.1, according to shield machine under edpth of tunnel Theoretical Calculation Water And Earth Pressures collective effect directly driving passes through when outside press
Power scope, arranges recharge water water level；
S3.2, to recharge water in ventilating shaft 12, and monitor soil body lateral displacement and fluctuation in stage change inside and outside foundation ditch；
Horizontal grouting pipe and vertical Grouting Pipe are set in S3.3, ground-connecting-wall, and Grouting Pipe interval 2m, when shield duct piece 9 and side
Occur during seepage, to inject the closure of polyurethane serosity between wall 5.
Ventilating shaft is passed through in step S4, shield digging
The full weight of simultaneous grouting slurry when S4.1, shield machine are passed through, need to be ensured, apart from outer 5 rings of ventilating shaft ground-connecting-wall and
Increase the activity coefficient of synchronous grouting when 2 rings are tunneled in ventilating shaft, simultaneous grouting slurry mixes micro-expanding agent；
S4.2, secondary grouting is all carried out apart from 2 rings in outer 4 rings of ventilating shaft ground-connecting-wall and ventilating shaft per ring, grouting sequence is under
It is supreme, carry out slip casting from right to left；
Synchronous grouting layer is punched using drill rod when S4.3, slip casting, the standard that Stress control slip casting terminates is 3MPa；
Check over 2m before S4.4, shield machine digging ventilating shaft ground-connecting-wall and change cutter, it is ensured that cutterhead digging power and open
Digging face diameter, it is to avoid ventilating shaft ground-connecting-wall occur and block shield machine situation；
Ensure when S4.4, shield segment assembling that at least two ring seal jacking blocks are located at the shield tunnel first half, are easy to later stage section of jurisdiction
Remove；
S4.5, shield digging each on two endless tube pieces in the outer Fourth Ring of ventilating shaft, ventilating shaft need to increase 2 injected holes newly after passing through ventilating shaft
Carry out supplementing slip casting, injection participates in the polyurethane of bulking machine, and grouting sequence is for from bottom to up.Drill rod punches synchronous grouting layer, note
Slurry termination criteria is have polyurethane to flow out or water-tight after adjacent holes are opened；
S4.6, cut section of jurisdiction before, open ventilating shaft ground-connecting-wall and shield tunnel intersection section of jurisdiction injected hole, without leak or leak
Amount is gradually decreased, and can carry out next step.If still there is water seepage, polyurethane leak stopping is injected by ground-connecting-wall built-in slip casting pipe.
Step S5, dismounting section of jurisdiction apply portal
Small-sized disintegrating machine is transported to middle plate and cuts readjustment material, wherein by S5.1, stage by stage pump drainage recharge water：Tunnel top and
Sidepiece mortar is together abolished depending mainly on section of jurisdiction, and the remaining mortar being bonded together with agent structure is by the way of manually abolishing
Cut；
After the completion of S5.2, backfill material cut, disintegrating machine is transported to into tunnel after at least 2 endless tube pieces being removed by the BOB(beginning of block) that binds
In, complete remaining section of jurisdiction and cut
S5.3, construction tunnel portal, complete ventilating shaft remainder structure construction.
The industrial applicibility of the present invention：
1st, with sand and together with laying, asphalt felt is as boundary zone and rationally sets with side wall backfill plastotype concrete for ventilating shaft base plate
Put shield driving circuit, solve " after first tunnel stand " method need to adjust shield machine continuously tunnel circuit and get around central post technology it is difficult
Topic, the bottom steel for reducing side wall angle are supportted；Need not set up when setting up plate during one asphalt felt is isolated and constructed after the completion of backfill
Scaffold and laying bottom template.It is determined that suitably returning filling mixture ratio parameter, middle ventilating shaft of constructing afterwards can quickly cut and complete
Subsequent construction, realizes the whole machine of shield quickly through the parallel construction with middle ventilating shaft agent structure.
2nd, using various slip casting measures and grouting sequence reasonable in design, slip casting position and slurry material proportioning, mix swollen
Change machine strengthens slurry dilatancy effect and rapid hardening, and after solving " standing after first tunnel " method, in the middle of construction, ventilating shaft portal is prevented with tunnel shaft interface
Water problems, realizes middle ventilating shaft residue main body construction and shield driving parallel operations.
3rd, hang out after section of jurisdiction being removed with small-sized disintegrating machine and apply again portal, change traditional shield machine and shut down wait paving
Arrange in rail, ventilating shaft steel jacket box, originate the series of measures such as support receive and it is secondary originate the situation missed the stop, effectively shorten shield
Driving the duration, simplified and originated and has received portal external end head plain concrete wall and three axes agitating pile reinforcement process, saving engineering into
This.
In a word, missed the stop the method with middle ventilating shaft parallel construction using shield driving of the present invention, solve centre
The delayed technical barrier that shield acceptable conditionses cannot be provided on time of ventilating shaft construction speed, invented shield miss the stop it is flat with middle ventilating shaft
The new technology of row construction, optimizes portal termination reinforcement measure in ventilating shaft of knowing clearly, and realizes shield and misses the stop and originate without the need for secondary, letter
Construction technology is changed, has reduced construction cost and effectively shorten the duration, filled up the direct digging of shield machine and missed the stop and ventilating shaft
The technological gap of agent structure parallel construction, with good economic benefit and social benefit, this method is particularly well-suited to tunnel
When the larger termination consolidation effect of buried depth is difficult to ensure that, shield is by middle ventilating shaft excavation work.
Although embodiment of the present invention is disclosed as above, which is not restricted to listed by description and embodiment
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Other modification is realized, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (7)
1. a kind of method of ventilating shaft structure and shield driving parallel construction, it is characterised in that comprise the following steps：
S1, ventilating shaft foundation ditch are supported to substrate when digging, and side wall of constructing is located at orlop and supports following part and base plate, in side
The height that boundary zone embedded backfill material are supported to orlop is laid on wall；
S2, the template for removing plate during orlop is supported and laid in ventilating shaft foundation ditch according to shield tunnel design, bury backfill material
To the middle plate template and backfill material on lay boundary zone；
S3, the bottom-up remainder for pouring side wall in ventilating shaft foundation ditch successively, support and middle plate, the recharge in ventilating shaft foundation ditch
Water, it is ensured that Water And Earth Pressures balance inside and outside ventilating shaft foundation ditch；And
S4, shield machine are extracted the recharge water in foundation ditch, are removed by material driving assembled shield duct piece is backfilled after passing through ventilating shaft foundation ditch
Backfill material and shield duct piece, finally apply portal and ventilating shaft remaining structure.
2. the method for ventilating shaft structure as claimed in claim 1 and shield driving parallel construction, it is characterised in that step S1
It is further comprising the steps of：
Digging to substrate, two row's central posts are set in the middle part of ventilating shaft foundation ditch, the external boundary of central post described in any side and and its
The spacing of the inner boundary of the side wall of homonymy meets the digging of shield machine by space, is arranged U-shapedly even outside the ventilating shaft foundation ditch
Wall and dewatering well；
Wherein, the boundary zone is asphalt felt.
3. the method for ventilating shaft structure as claimed in claim 2 and shield driving parallel construction, it is characterised in that the backfill material
Including positioned at two rows neutrality the M5 mortars of intercolumniation and the external boundary positioned at any side central post and with the side wall of its homonymy
Plastic concrete between inner boundary.
4. the method for ventilating shaft structure as claimed in claim 2 and shield driving parallel construction, it is characterised in that step S4
In increase the activity coefficient of synchronous grouting, synchronous grouting slurry when tunneling apart from 2 rings in outer 5 rings of U-shaped ground-connecting-wall and ventilating shaft foundation ditch
Liquid mixes micro-expanding agent；Secondary grouting is carried out apart from 2 rings in outer 4 rings of the U-shaped ground-connecting-wall of ventilating shaft and ventilating shaft all per ring, grouting sequence is
From bottom to up, slip casting is carried out from right to left；Cement mortar and waterglass liquid double oar liquid is injected during secondary grouting.
5. the method for ventilating shaft structure as claimed in claim 1 and shield driving parallel construction, it is characterised in that step S4
Middle shield machine carries out supplementing grouting and reinforcing to the section of jurisdiction of the close portal position of ventilating shaft foundation ditch after passing through.
6. the method for ventilating shaft structure as claimed in claim 4 and shield driving parallel construction, it is characterised in that step S4
In extract the construction of recharge water in ventilating shaft for operating stage by stage, monitor and record inside and outside foundation ditch in land movement situation control ventilating shaft
Recharge water level, cuts backfill from ventilating shaft agent structure two ends after the completion of drawing water and expects and guarantee that water leakage situation is controllable in tunnel, if not
It is controllable, carry out supplementing slip casting.
7. the method for ventilating shaft structure as claimed in claim 1 and shield driving parallel construction, it is characterised in that step S4 shield
Before section of jurisdiction in the ventilating shaft foundation ditch the small-sized disintegrating machine in reservation tear down section of jurisdiction lifting space, remove disintegrating machine after at least two endless tube pieces
The broken of remaining section of jurisdiction is completed in being transported to tunnel and is hung out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822445.7A CN106522989B (en) | 2016-09-14 | 2016-09-14 | The method of ventilating shaft structure and shield driving parallel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822445.7A CN106522989B (en) | 2016-09-14 | 2016-09-14 | The method of ventilating shaft structure and shield driving parallel construction |
Publications (2)
| Publication Number | Publication Date |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514262A (en) * | 2017-08-02 | 2017-12-26 | 中国建筑第八工程局有限公司 | The construction method of shield piping lane |
| CN107664035A (en) * | 2017-10-20 | 2018-02-06 | 中国建筑第八工程局有限公司 | The construction method of well after shield piping lane elder generation shield |
| CN108868814A (en) * | 2018-08-24 | 2018-11-23 | 中铁西安勘察设计研究院有限责任公司 | Collapsible loess combination land pebble stratum tunneling air duct connects the ventilating shaft of shield tunnel |
| CN109162741A (en) * | 2018-10-29 | 2019-01-08 | 中铁十二局集团有限公司 | The method in shield crossing piston air duct and piston air duct superstructure synchronous construction |
| CN109577999A (en) * | 2018-12-27 | 2019-04-05 | 中铁十局集团城市轨道工程有限公司 | Side-proof wall deformation and shield machine plant the excessively intermediate ventilating shaft ruggedized construction of shield machine and construction method of head |
| CN109577998A (en) * | 2018-12-04 | 2019-04-05 | 中铁十二局集团有限公司 | A kind of construction method that the backfill of shield section piston air duct is missed the stop |
| CN109695456A (en) * | 2019-01-22 | 2019-04-30 | 济南轨道交通集团有限公司 | A kind of rail traffic and pipe gallery build structure and its construction method jointly |
| CN110541722A (en) * | 2019-09-30 | 2019-12-06 | 中铁第四勘察设计院集团有限公司 | Partial shield tunnel segment dismantling method and water stop structure in middle air shaft |
| CN110685709A (en) * | 2019-10-30 | 2020-01-14 | 长江勘测规划设计研究有限责任公司 | Construction method and structure of connection channel of superposed tunnel |
| CN112727466A (en) * | 2021-01-29 | 2021-04-30 | 绍兴市柯桥区轨道交通集团有限公司 | Construction method for support-free prefabricated assembled type shield tunnel air shaft structure |
| CN114593927A (en) * | 2022-03-01 | 2022-06-07 | 中交隧道工程局有限公司 | Method for performing shield tunnel prototype test by using middle air shaft |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107514262A (en) * | 2017-08-02 | 2017-12-26 | 中国建筑第八工程局有限公司 | The construction method of shield piping lane |
| CN107664035A (en) * | 2017-10-20 | 2018-02-06 | 中国建筑第八工程局有限公司 | The construction method of well after shield piping lane elder generation shield |
| CN108868814A (en) * | 2018-08-24 | 2018-11-23 | 中铁西安勘察设计研究院有限责任公司 | Collapsible loess combination land pebble stratum tunneling air duct connects the ventilating shaft of shield tunnel |
| CN108868814B (en) * | 2018-08-24 | 2023-12-29 | 中铁西安勘察设计研究院有限责任公司 | Air shaft of underground excavation air duct shield tunnel of collapsible loess combined pebble soil stratum |
| CN109162741A (en) * | 2018-10-29 | 2019-01-08 | 中铁十二局集团有限公司 | The method in shield crossing piston air duct and piston air duct superstructure synchronous construction |
| CN109577998B (en) * | 2018-12-04 | 2020-10-09 | 中铁十二局集团有限公司 | Construction method for backfilling and station-crossing of piston air duct in shield interval |
| CN109577998A (en) * | 2018-12-04 | 2019-04-05 | 中铁十二局集团有限公司 | A kind of construction method that the backfill of shield section piston air duct is missed the stop |
| CN109577999A (en) * | 2018-12-27 | 2019-04-05 | 中铁十局集团城市轨道工程有限公司 | Side-proof wall deformation and shield machine plant the excessively intermediate ventilating shaft ruggedized construction of shield machine and construction method of head |
| CN109577999B (en) * | 2018-12-27 | 2024-02-06 | 中铁十一局集团城市轨道工程有限公司 | Shield machine middle wind shaft reinforcing structure capable of preventing side wall deformation and shield machine planting head and construction method |
| CN109695456A (en) * | 2019-01-22 | 2019-04-30 | 济南轨道交通集团有限公司 | A kind of rail traffic and pipe gallery build structure and its construction method jointly |
| CN110541722A (en) * | 2019-09-30 | 2019-12-06 | 中铁第四勘察设计院集团有限公司 | Partial shield tunnel segment dismantling method and water stop structure in middle air shaft |
| CN110685709A (en) * | 2019-10-30 | 2020-01-14 | 长江勘测规划设计研究有限责任公司 | Construction method and structure of connection channel of superposed tunnel |
| CN112727466A (en) * | 2021-01-29 | 2021-04-30 | 绍兴市柯桥区轨道交通集团有限公司 | Construction method for support-free prefabricated assembled type shield tunnel air shaft structure |
| CN114593927A (en) * | 2022-03-01 | 2022-06-07 | 中交隧道工程局有限公司 | Method for performing shield tunnel prototype test by using middle air shaft |
| CN114593927B (en) * | 2022-03-01 | 2024-01-26 | 中交隧道工程局有限公司 | Method for carrying out prototype test of shield tunnel by using middle wind well |
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