CN107725060A - Constructing metro tunnel method containing complicated geological and without shield launching place - Google Patents
Constructing metro tunnel method containing complicated geological and without shield launching place Download PDFInfo
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- CN107725060A CN107725060A CN201711111239.6A CN201711111239A CN107725060A CN 107725060 A CN107725060 A CN 107725060A CN 201711111239 A CN201711111239 A CN 201711111239A CN 107725060 A CN107725060 A CN 107725060A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005641 tunneling Effects 0.000 claims abstract description 71
- 238000010276 construction Methods 0.000 claims abstract description 55
- 230000001360 synchronised effect Effects 0.000 claims abstract description 25
- 238000005065 mining Methods 0.000 claims abstract description 18
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 23
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 23
- 239000004575 stone Substances 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 238000007596 consolidation process Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000011378 shotcrete Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 230000002787 reinforcement Effects 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
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000012407 engineering method Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000007569 slipcasting Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
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- 239000011449 brick Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—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
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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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- E21D9/06—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
Abstract
The present invention relates to subway work technical field, constructing metro tunnel method specially containing complicated geological and without shield launching place, solve the problems, such as in existing subway work because Subway Tunnel contains complicated geological and can not provide shield launching place on time, in default transit tunnel, one shield vertical shaft is set, the both ends of shield vertical shaft shield sky of being constructed respectively using Mining Method is pushed away tunneling section and synchronous construction tunneling section and applies preliminary bracing in time, shield sky pushes away tunneling section and is connected with shield driving section, the shield machine main body and Backup system transferred and assembled through shield vertical shaft push away progress shield driving when tunneling section reaches shield driving section through shield sky using separate launching mode and originated, synchronous construction tunneling section is excavated to subway station using Mining Method.The present invention gives full play to the strong point of respective engineering method relative to single shield-tunneling construction, and it is fast to have the characteristics that to reduce cutterhead abrasion, the tool changing that avoids frequently opening a position, reduction security risk, construction speed.
Description
Technical field
The present invention relates to subway work technical field, specially containing complicated geological and without the subway tunnel in shield launching place
Construction method.
Background technology
With the quickening of Chinese Urbanization step, metro construction has been enter into golden period period of expansion.Existing subway is applied
Work scheme generally use first carries out metro station construction, and then shield machine originates carry out shield-tunneling construction from subway station, and shield goes out
The conveying of slag and shield piece utilizes subway station；After either being got through in subway station, separately shield at one is selected in Subway Tunnel
Structure vertical shaft, shield is slagged tap and the conveying of shield piece coordinates vertical shaft to carry out jointly using subway station.Because city underground is commonly designed
For shallow tunnel, and above route, structures are more, densely populated, heavy traffic, are often asked because earth clearance or traffic change
Topic influences the integral construction of engineering, can not provide place for originating for shield on time, because subway tunnel section is longer, pole be present
The possibility of the special geology such as hard rock or boulder group is larger, and shield machine will accelerate cutter abrasion, reduction in the work of such a stratum
Driving speed, frequently changing cutter will be such that cost of labor and engineering cost constantly rises, and construction safety risk is very big, not only applies
Work difficulty is big, and the duration of engineering and cost can not obtain fine control.
The content of the invention
The present invention is in order to solve because Subway Tunnel contains complicated geological to add using shield-tunneling construction in existing subway work
Fast cutter abrasion, driving speed is reduced, while place is originated because earth clearance or traffic change to provide for shield on time
A kind of problem, there is provided constructing metro tunnel method containing complicated geological and without shield launching place.
The present invention is achieved through the following technical solutions：A kind of subway tunnel containing complicated geological and without shield launching place
Pipeline construction method, one shield vertical shaft is set in default transit tunnel, the both ends of shield vertical shaft are constructed shield respectively using Mining Method
Structure sky pushes away tunneling section and synchronous construction tunneling section and applies preliminary bracing in time, and shield sky pushes away tunneling section towards shield driving side
To synchronous construction tunneling section pushes away tunneling section and be connected with shield driving section towards shield driving opposite direction, shield sky, through shield vertical shaft
The shield machine main body and Backup system transferred and assembled push away tunneling section arrival shield through shield sky using separate launching mode and pushed away
Progress shield driving originates after entering section, and synchronous construction tunneling section is excavated to subway station using Mining Method.
Complicated geological includes any one or a few combination in extremely hard rock, boulder group or upper-soft lower-hard ground.
Shield sky pushes away tunneling section and synchronous construction tunneling section is arranged in the range of complicated geological.
The bottom that shield sky pushes away tunneling section is provided with the shield machine guide table of arc, and the length of shield machine guide table is shield vertical shaft
Untill apart from 1.5 meters of shield driving section starting point, shield sky pushes away landfill in tunneling section and had pushes away the beans originated for shield sky for end face
Grain stone.
Separate launching mode refers to push away tunneling section in shield sky, before shield machine main body carrying connecting bridge and No. 1 chassis sky push away
OK, remaining 2-No. 6 chassis is placed on synchronous construction tunneling section and is attached by pipeline extension.
Shield machine guide table is constructed using C30~C45 plain concretes, and thickness is 400mm~450mm, in shield machine guide table
Heart line overlaps with tunnel center line and shield machine guide table is along tunnel center line symmetrical setting, shield machine guide table section arc length and tunnel
Center angle is 60 °.
Beans stone pushes away tunneling section tunneling boring landfill in the range of the 10m shield vertical shaft in shield sky, remaining length
Shield sky pushes away tunneling section landfill beans stone to tunnel 1/3-1/2 height.
Preliminary bracing refers to carry out supporting using gunite concrete, anchor pole, bar-mat reinforcement, bracing members.
Shield machine pushes away the intersection termination wall area of tunneling section to shield driving section and shield sky before shield driving originates
Face carries out consolidation process, and consolidation process substitutes reinforcing bar and gunite concrete using glass fibre, high by 3 to 9 meters of minister on face
The soil body scope of rice uses grouting and reinforcing, and injection slurry is using cement and the mixed liquor of waterglass.
The present invention in urban subway tunnel construction, to run into extremely hard rock, boulder group or over long distances it is upper it is soft it is lower it is hard poorly
Duan Shi, achieved noticeable achievement using the engineering method of " Mining Method excavation+shield method lining cutting ", it is often more important that, construction party of the present invention
Method, which only relies on a shield vertical shaft, realizes the transport slagged tap with shield piece of shield-tunneling construction, can not applied in subway station
Prior involvement is constructed under work state, substantially increases project progress, relative to single shield-tunneling construction, technology of the present invention
Scheme can give full play to the strong point of respective engineering method, have and reduce cutterhead abrasion, avoid the tool changing that frequently opens a position, having reduces safety wind
Nearly, the advantages that construction speed is fast.
Brief description of the drawings
Fig. 1 is the process chart of the present invention；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is shield machine separate launching structural representation；
Fig. 4 is shield machine guide table schematic diagram；
Fig. 5 beans clitters fill out structural representation.
In figure：1- shield vertical shafts, 2- shield skies push away tunneling section, 3- synchronous construction tunneling sections, 4- shield driving sections, 5- subways
Station, 7- preliminary bracings, 8- shield machine guide table, 9- beans stones, 10- cutterheads, 11- shield machine main bodys, H- shield drivings direction.
Embodiment
The present invention is further elaborated 1~Fig. 5 of reference picture, a kind of containing complicated geological and without the ground in shield launching place
Iron method for tunnel construction, one shield vertical shaft 1 is set in default transit tunnel, the both ends of shield vertical shaft 1 are distinguished using Mining Method
Construction shield sky pushes away tunneling section 2 and synchronous construction tunneling section 3 and applies preliminary bracing 7 in time, and shield sky pushes away tunneling section 2 towards shield
Structure direction of propulsion H, synchronous construction tunneling section 3 push away tunneling section 2 and are connected with shield driving section towards shield driving opposite direction, shield sky
4, the shield machine main body 11 and Backup system transferred and assembled through shield vertical shaft 1 are pushed away secretly using separate launching mode through shield sky
Dig progress shield driving after section 2 reaches shield driving section 4 to originate, synchronous construction tunneling section 3 is excavated to subway using Mining Method
Stand 5.The position selection of shield vertical shaft 1 is carried out according to complicated geological, i.e., makees the section of the special geologies such as extremely hard rock or boulder group
For synchronous construction tunneling section 3, shield sky pushes away tunneling section 2 and synchronous construction tunneling section 3 is arranged in the range of complicated geological.By shield
The location that basement rock projection or boulder in the both sides section of vertical shaft 1 be present uses mining method construction, and shield driving direction H uses Mining Method
The just branch construction of excavation+shotcrete, later stage progress shield sky pushes away uses Tunneling by mining method with pipe sheet assembling operation, shield driving opposite direction
Construction, for shield machine go into the well assembling and sky push away when deposit shield machine after supporting chassis, untill subway station is excavated to.
The present invention pushes away tunneling section 2 using Mining Method completion shield sky and Partial synchronization is applied after the completion of the construction of shield vertical shaft 1
Work tunneling section 3, wherein shield sky, which push away the length of tunneling section 2, must be more than shield machine main body 11, cutterhead 10, connecting bridge and No. 1 chassis
Total length；The length of Partial synchronization construction tunneling section 3 need to be more than the total length of remaining 2-No. 6 chassis.When shield machine air pushing passes through
Cross after shield sky pushes away tunneling section 2 and start shield driving, remaining synchronous construction tunneling section 3 constructed completion using Mining Method,
Untill being connected with subway station 5.
Shield machine before shield driving originates, slap by the intersection termination wall that tunneling section 2 is pushed away to shield driving section 4 and shield sky
Sub- face carries out consolidation process, and consolidation process substitutes reinforcing bar and gunite concrete using glass fibre, to 9 meters of minister on face,
High 3 meters of soil body scope uses grouting and reinforcing, and injection slurry is using cement and the mixed liquor of waterglass.
Shield sky after Mining Method excavates preliminary bracing 7 pushes away tunneling section 2 and synchronous construction tunneling section 3 is non-circular,
Shield, which can not be realized, to be carried out shield sky and pushes away the sky of tunneling section 2 pushing away, and the bottom of tunneling section 2 construction shield machine guide table 8, shield are pushed away in shield sky
Structure machine guide table 8 can provide accurate guiding while shield machine is supported for the driving of shield machine, it is ensured that shield machine has when sky pushes away
Good propulsion posture, pipe sheet assembling quality and waterproof effect can also reach construction requirement.Shield machine guide table 8 uses C30~C45
Plain concrete is constructed, thickness 400mm, and the section arc length of shield machine guide table 8 and tunnel center angle are 60 °, and shield at interface
The absolute altitude of structure machine guide table 8 is lower 2~3cm than design face, it is ensured that shield machine ensures shield body while can smoothly stepping into shield machine guide table 8
There are enough contact surfaces with guide table.The center line of shield machine guide table 8 overlaps with tunnel center line, and relative to tunnel center line pair
Claim to set, pay attention to not applying guide table close to face 1.5m when applying, reserve the space that cutterhead 10 rotates, avoid cutterhead 10 from blocking
Extremely.
The construction of shield machine guide table 8 complete and reach design strength 90% after, pushed away in shield sky and beans carried out in tunneling section 2
The landfill of stone 9, for beans stone 9 in addition to filling the space of section of jurisdiction behind, main function is to provide the counter-force of shield driving, ensures section of jurisdiction
Sealing rod is closely connected, reaches good water-stagnating effect.Shield sky push away tunneling section 2 be it is totally enclosed, can not be when shield sky pushes away from knife
Beans stone 9 is transported in the front of disk 10, can only fill in the heap of beans stone 9 before shield steps into shield machine guide table 8, the landfill of beans stone 9
Side's amount must be calculated, and side's amount is very few, there is provided counter-force be less than section of jurisdiction sealing rod minimum extruding force 3000kN, the waterproof in tunnel is imitated
Fruit is poor, results even in failure, and thrust is excessive, shield machine guide table 8 can be caused to be damaged during shield machine air pushing, or go out
Now knock the safety problem in first branch face.By Force Calculation, 10m tunneling borings landfill beans stone, remaining heap before Tunneling by mining method
It is filled to the 1/3-1/2 height in tunnel.During practice of construction, it is difficult to fill up whole section, section can only be expired as far as possible
Backfill.
Such as run into sharp radius curve sky and push away originating case, shield body can not turn before not fully entering the soil body during shield launching
To hole can only be entered along form of straight lines.The line style feature that section line is originated according to section is fitted to tunnel line, takes secant to begin
Hair, calculates the offset of shield launching, and then extrapolate the position for originating frame.Center line and shield will be ensured by originating when frame is fixed
Secant coincidence is originated, the gradient is consistent with the Tunnel Design gradient.
Originate after rack position determines, according to originating segment array and the external length of 0 endless tube piece determines the position of reaction frame,
Reaction frame will ensure reaction frame end face and originate frame Horizontal-shaft vertical when installing, so as to reaction frame stress equalization.
After shield launching frame and reaction frame determine position and reinforced, the assembly working of going into the well of shield machine is carried out, is further adopted
With shield separate launching method.Shield is still not finished at station when shield vertical shaft 1 originates, and originating opposite direction can not also reserve
The material such as material hole for hoist, section of jurisdiction, grease during shield driving can only go into the well from shield vertical shaft 1, realize that shield smoothly originates
Must be by the way of separate launching.Shield sky pushes away shield main body when originating and moved ahead with band connection bridge, No. 1 chassis, matches somebody with somebody after remaining
Set chassis is retained in synchronous construction tunneling section 2, and arranging connection by pipe is extended.
Shield separate launching bears endless tube piece by the way of semi-ring is assembled, so as to the vertical transport of shield-tunneling construction material.Half
The position of negative ring and reaction frame vacancy carried out with bracing members during ring assembly to contact support, enables the thrust of domain section of jurisdiction uniformly
Be delivered on reaction frame, ensure that the assembled quality of positive ring and negative endless tube piece.
After shield separate launching when connecting bridge enters and originates vertical shaft, i.e., cutterhead 10 enter hole in 10m, due to space by
Limit will be unable to carry out section of jurisdiction under well operations, it is necessary to transform connecting bridge and No. 1 chassis.By the measurement to the device space,
The diagonal brace on connecting bridge top is cut off, and removes the diagonal brace and belt holder on No. 1 chassis top, just can meet that section of jurisdiction goes into the well will
Ask.Lifting go into the well it should be noted that must steadily transfer in section of jurisdiction, it is impossible to collided with equipment.When connecting bridge and No. 1 chassis enter in tunnel,
Diagonal brace and belt holder need to be recovered again, prevent equipment unbalance stress to be deformed.
To observe cutter on the outside of cutterhead in advance before shield machine guide table 8 when sky pushes away in shield Tunneling by mining method, on shield machine is
It is no to interfere with guide table and guide rail, the cutter of interference is removed, with anti-jam cutterhead.Shield machine is pushed ahead along guide table, timely
Monitor shield machine and promote situation, check that shield sky pushes away section whether deficient digging, shield machine housing and the shield machine guide table 8 of tunneling section 2
Combination, both sides beans stone 9 situations such as backfilling, while to keep a close eye on cutter head of shield machine periphery and lining cutting, cyclic section of jurisdiction and shield
The gap of tail, it is ensured that shield machine moves ahead along the center line of guide rail.The fltting speed of strict control shield machine, guarantee beans stone 9,
Synchronous grouting and second pulp feeding filling are closely knit, prevent shield body torsion or section of jurisdiction sidesway, early stage, fltting speed control was in 20mm/min
Within, skillfully rear speed can reach 40mm/min to technique.
Tunneling section 2 is pushed away for fully closed shield sky in front of cutterhead, wet-spraying machine can not be used to carry out beans stone 9 and sprayed, removed
The automatic filling under squeezing action of beans stone 9 is outer during driving, at the same by the way of human assistance by beans stone 9 to cutterhead or so
Two side clearances are filled, and surround a cofferdam in the otch surrounding of the shield machine sand material that is packed in bag every 5m, cofferdam scope is not less than 3
The clock position of point~9 point, to prevent being altered before the beans stone of section of jurisdiction behind, mortar.
Synchronous grouting is carried out after every endless tube piece beans stone manually backfill, synchronous with shield machine propulsion, using manual control
Mode slip casting, flow rate of grouting, speed and pressure are adjusted according to field condition.To ensure mortar effectively filling out to section of jurisdiction behind space
Fill, prevent mortar from altering to cutterhead, grouting pressure is controlled in 0.05~0.1MPa, but grouting pressure cannot function as slip casting and terminate
Standard, when grouting amount reach can jacking consolidate section of jurisdiction when, you can terminate slip casting, about 2~2.5m3 of note.Add in slip casting process
The observation deformed to the cofferdam outside shield machine surrounding and shield shell by force, discovery have slurries to leak, should temporarily cease slip casting.Shield
It is unlimited in front of machine, synchronous grouting is ineffective, it is necessary to carries out supplement slip casting behind to section of jurisdiction.The abjection tail shield 5~6 in section of jurisdiction
After ring, in and 9 positions dual slurry is injected by tunnel segment hanging hole at 3 points, prevent section of jurisdiction sidesway；A ring is carried out every 10 rings
Closure, and dual slurry is injected by 1: 11 position hole for hoist, carry out vault backfill.Multiple slip casting just can ensure that section of jurisdiction behind
Gap filling it is closely knit.
Shield machine air can carry out originating portal temporary sealing after promoting hole, and brick laid on edge wall blocks outside the section of jurisdiction of hole, and
Assembling reinforcement mesh sheet, then carry out spray anchor and consolidate, prevent beans gravel and slurries outflow in tunnel.It is pre- in hole top before spray anchor
The slip casting mouth of pipe and exhaust outlet are stayed, the later stage carries out slip casting at top, fills gap between section of jurisdiction top and just branch, it is ensured that tunnel duct piece
Assembled quality.
When shield machine will reach headwall face, i.e., filling beans stone as much as possible, filling around shield body are finished
It will clean out, the support removed cutterhead deformation when empty push away is prevented inside cutterhead and welded, and will be subsequently retained before cutterhead afterwards
Chassis be connected with shield machine.From shield body preformed hole injection low-strength cement slurry, shield shell is set to the greatest extent may be used with tunnel Chu Zhijian spaces
It can fill up, to increase shield body rotational resistance, be further continued for tunneling after cement mortar initial set.Shield machine top starts simultaneously to face to be turned
Movable knife disc, promoted using the method for small moment of torsion, low velocity, while adjustment cutterhead left-hand rotation right-hand rotation direction is changed according to roll angle, directly
Untill shield body enters the change less of soil body roll angle.
When in Xiamen, subway Line 11 marks general's ancestral temple~literary stove station section construction, the station of shield launching and reception is because of room
Room is removed and traffic road changes influence and can not constructed by original plan, and section also has basement rock projection, upper soft lower hard and boulder bad
Geology, using traditional construction method, it is necessary to which waiting station construction to complete 120m structures just possesses shield launching condition, and shield exists
Cutterhead and tool wear are serious when basement rock projection and boulder group stratum are constructed, construction speed only 1~2 ring/day, the risk of construction and
Cost is very big.Successfully solve above-mentioned problem using construction method of the present invention, provide shield launching place within 10 months in advance,
The bad geological section in section is used into mining method construction simultaneously, construction cost is greatly reduced, achieves good social benefit
And economic benefit.
Claims (9)
- A kind of 1. constructing metro tunnel method containing complicated geological and without shield launching place, it is characterised in that：In default tunnel Section sets a shield vertical shaft（1）, shield vertical shaft（1）Both ends shield sky of being constructed respectively using Mining Method push away tunneling section（2） With synchronous construction tunneling section（3）And preliminary bracing is applied in time（7）, shield sky pushes away tunneling section（2）Towards shield driving direction （H）, synchronous construction tunneling section（3）Towards shield driving opposite direction, shield sky pushes away tunneling section（2）It is connected with shield driving section（4）, Through shield vertical shaft（1）The shield machine main body transferred and assembled（11）And Backup system is pushed away using separate launching mode through shield sky Tunneling section（2）Reach shield driving section（4）Carry out shield driving afterwards to originate, synchronous construction tunneling section（3）Excavated using Mining Method To subway station（5）.
- 2. the constructing metro tunnel method according to claim 1 containing complicated geological and without shield launching place, its feature It is：Complicated geological includes any one or a few combination in extremely hard rock, boulder group or upper-soft lower-hard ground.
- 3. the constructing metro tunnel method according to claim 2 containing complicated geological and without shield launching place, its feature It is：Shield sky pushes away tunneling section（2）With synchronous construction tunneling section（3）It is arranged in the range of complicated geological.
- 4. the constructing metro tunnel method according to claim 1 containing complicated geological and without shield launching place, its feature It is：Shield sky pushes away tunneling section（2）Bottom be provided with the shield machine guide table of arc（8）, shield machine guide table（8）Length be shield Structure vertical shaft（1）End face is to apart from shield driving section（4）Untill 1.5 meters of starting point, shield sky pushes away tunneling section（2）Interior landfill has for shield Structure sky pushes away the beans stone originated（9）.
- 5. the constructing metro tunnel method containing complicated geological and without shield launching place according to claim 1 or 3, it is special Sign is：Separate launching mode refers to push away tunneling section in shield sky（2）, shield machine main body（11）Carry connecting bridge and No. 1 chassis Sky pushes away forward, and remaining 2-No. 6 chassis is placed on synchronous construction tunneling section（3）And it is attached by pipeline extension.
- 6. the constructing metro tunnel method according to claim 4 containing complicated geological and without shield launching place, its feature It is：Shield machine guide table（8）Constructed using C30~C45 plain concretes, thickness is 400mm~450mm, shield machine guide table（8）'s Center line is overlapped with tunnel center line and shield machine guide table（8）Along tunnel center line symmetrical setting, shield machine guide table（8）Section arc Long and tunnel center angle is 60 °.
- 7. the constructing metro tunnel method according to claim 4 containing complicated geological and without shield launching place, its feature It is：Beans stone（9）Tunneling section is pushed away in shield sky（2）From shield vertical shaft（1）Tunneling boring landfill in the range of the 10m of beginning, remaining The shield sky of length pushes away tunneling section（2）Landfill beans stone（9）To tunnel 1/3-1/2 height.
- 8. the constructing metro tunnel method according to claim 1 containing complicated geological and without shield launching place, its feature It is：Preliminary bracing（7）Refer to carry out supporting using gunite concrete, anchor pole, bar-mat reinforcement, bracing members.
- 9. the constructing metro tunnel method according to claim 1 containing complicated geological and without shield launching place, its feature It is：Shield machine is before shield driving originates, to shield driving section（4）Tunneling section is pushed away with shield sky（2）Intersection termination wall Face carries out consolidation process, and consolidation process substitutes reinforcing bar and gunite concrete using glass fibre, to minister on face 9 Rice, high 3 meters of soil body scope use grouting and reinforcing, and injection slurry is using cement and the mixed liquor of waterglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111239.6A CN107725060B (en) | 2017-11-13 | Subway tunnel construction method containing complex geology and without shield originating site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111239.6A CN107725060B (en) | 2017-11-13 | Subway tunnel construction method containing complex geology and without shield originating site |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107725060A true CN107725060A (en) | 2018-02-23 |
| CN107725060B CN107725060B (en) | 2023-12-01 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775244A (en) * | 2018-05-28 | 2018-11-09 | 中铁十六局集团有限公司 | A kind of Mining Method receives shield machine and shield sky pushes away construction method |
| CN109026043A (en) * | 2018-09-18 | 2018-12-18 | 中铁第六勘察设计院集团有限公司 | A kind of long range submerged tunnel mine shield dynamic lays pattern and method from joint |
| CN109057810A (en) * | 2018-08-30 | 2018-12-21 | 中国水利水电第十四工程局有限公司 | A kind of shield sky pushes away construction method and auxiliary device by Tunneling by mining method |
| CN110685699A (en) * | 2019-10-15 | 2020-01-14 | 中铁十二局集团有限公司 | Mine method tunnel shield empty pushing starting construction method |
| CN110761800A (en) * | 2019-12-05 | 2020-02-07 | 中铁十二局集团第二工程有限公司 | Air-assisted launching construction method of launching well in underground excavation tunnel shield machine |
| CN110905527A (en) * | 2019-12-11 | 2020-03-24 | 中铁二十局集团第四工程有限公司 | Construction method of tunnel with upper soft and lower hard strata |
| CN111305856A (en) * | 2020-02-24 | 2020-06-19 | 上海应用技术大学 | Shield construction starting method for subway in narrow section |
| CN111577300A (en) * | 2020-04-20 | 2020-08-25 | 中铁十二局集团有限公司 | Construction method for shield to penetrate through dense holes in boulder and boulder stratum |
| CN111927477A (en) * | 2020-08-24 | 2020-11-13 | 上海市城市建设设计研究总院（集团）有限公司 | Shield overall launching and receiving method for ultra-deep long-distance tunnel |
| WO2021120991A1 (en) * | 2019-12-16 | 2021-06-24 | 中铁一局集团有限公司 | Method for reconstructing shield tunnel for mining construction |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775244A (en) * | 2018-05-28 | 2018-11-09 | 中铁十六局集团有限公司 | A kind of Mining Method receives shield machine and shield sky pushes away construction method |
| CN109057810A (en) * | 2018-08-30 | 2018-12-21 | 中国水利水电第十四工程局有限公司 | A kind of shield sky pushes away construction method and auxiliary device by Tunneling by mining method |
| CN109057810B (en) * | 2018-08-30 | 2023-08-22 | 中国水利水电第十四工程局有限公司 | Construction method and auxiliary device for shield air-pushing through mine tunnel |
| CN109026043A (en) * | 2018-09-18 | 2018-12-18 | 中铁第六勘察设计院集团有限公司 | A kind of long range submerged tunnel mine shield dynamic lays pattern and method from joint |
| CN109026043B (en) * | 2018-09-18 | 2023-11-10 | 中铁第六勘察设计院集团有限公司 | Dynamic self-joint laying type and method for long-distance underwater tunnel mine shield |
| CN110685699A (en) * | 2019-10-15 | 2020-01-14 | 中铁十二局集团有限公司 | Mine method tunnel shield empty pushing starting construction method |
| CN110761800B (en) * | 2019-12-05 | 2021-10-01 | 中铁十二局集团第二工程有限公司 | Air-assisted launching construction method of launching well in underground excavation tunnel shield machine |
| CN110761800A (en) * | 2019-12-05 | 2020-02-07 | 中铁十二局集团第二工程有限公司 | Air-assisted launching construction method of launching well in underground excavation tunnel shield machine |
| CN110905527A (en) * | 2019-12-11 | 2020-03-24 | 中铁二十局集团第四工程有限公司 | Construction method of tunnel with upper soft and lower hard strata |
| CN110905527B (en) * | 2019-12-11 | 2021-09-03 | 中铁二十局集团第四工程有限公司 | Construction method of tunnel with upper soft and lower hard strata |
| WO2021120991A1 (en) * | 2019-12-16 | 2021-06-24 | 中铁一局集团有限公司 | Method for reconstructing shield tunnel for mining construction |
| CN111305856B (en) * | 2020-02-24 | 2021-11-05 | 上海应用技术大学 | Shield construction starting method for subway in narrow section |
| CN111305856A (en) * | 2020-02-24 | 2020-06-19 | 上海应用技术大学 | Shield construction starting method for subway in narrow section |
| CN111577300A (en) * | 2020-04-20 | 2020-08-25 | 中铁十二局集团有限公司 | Construction method for shield to penetrate through dense holes in boulder and boulder stratum |
| CN111927477A (en) * | 2020-08-24 | 2020-11-13 | 上海市城市建设设计研究总院（集团）有限公司 | Shield overall launching and receiving method for ultra-deep long-distance tunnel |
| CN111927477B (en) * | 2020-08-24 | 2022-02-11 | 上海市城市建设设计研究总院（集团）有限公司 | Shield overall launching and receiving method for ultra-deep long-distance tunnel |
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