CN109441459A - A kind of earth pressure balanced shield separate launching side excavating construction method - Google Patents
A kind of earth pressure balanced shield separate launching side excavating construction method Download PDFInfo
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- CN109441459A CN109441459A CN201811391499.8A CN201811391499A CN109441459A CN 109441459 A CN109441459 A CN 109441459A CN 201811391499 A CN201811391499 A CN 201811391499A CN 109441459 A CN109441459 A CN 109441459A
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- chute
- soil
- earth pressure
- pressure balanced
- gantry
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- 238000010276 construction Methods 0.000 title claims abstract description 43
- 239000002689 soil Substances 0.000 claims abstract description 54
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A kind of earth pressure balanced shield separate launching side excavating construction method, is connected with chute at the soil-unloading port of interim gantry, and the soil outlet of chute is located at the left and right either side of interim gantry；Before shield machine driving, first soil bucket is hung under the soil outlet position of chute, then shield machine starts broken hole door driving, and quarrel soil is transported on the soil-unloading port of interim gantry by screw conveyor and belt feeder, falls to Tu Douzhong then along chute.This method is suitable for the unearthed construction of all short vertical shaft earth pressure balanced shield, EPBS separate launching stages, working space is required low, no need to increase shield well length, save engineering cost, and this method is unearthed without using hoist engine, the unearthed disadvantage of hoist engine is evaded, has had the characteristics that economical, safe and efficient.
Description
Technical field
The present invention relates to shield tunnel construction fields, and in particular to is unearthed a kind of earth pressure balanced shield separate launching side
Construction method, this method are suitable for the unearthed construction of all short vertical shaft earth pressure balanced shield, EPBS separate launching stages.
Background technique
The unearthed operation of earth pressure balanced shield, EPBS separate launching is accident prone high risk construction link in shield-tunneling construction, at present
Domestic EPB shield tunneling separate launching construction, which is unearthed, mainly takes mode or the electric haulage side of dead astern hoist engine mixed soil bucket
Formula carries out construction of being unearthed.
The prior art is unable to reach safety, economy, efficient construction requirement, and mainly dead astern, which is unearthed, needs certain work
Industry space need to increase shield well length to increase engineering investment cost；Due to the limitation of working space, dead astern is unearthed can not
Soil bucket is transported using gantry crane, can only be in such a way that hoist engine be unearthed, hoist engine is unearthed, and there are higher safety is hidden
Suffer from, especially originate the case where section is upward slope section driving, if soil bucket braking control is bad easily to occur car slipping collision and wirerope
The accidents such as fracture, meanwhile, dead astern, which is unearthed to be unearthed using hoist engine, has speed slow, low efficiency, construction period long disadvantage.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention, provides a kind of earth pressure balanced shield separate launching side unearthed construction
Method, this method is suitable for the unearthed construction of all short vertical shaft earth pressure balanced shield, EPBS separate launching stages, low to working space requirement,
No need to increase shield well length, engineering cost is saved, and this method is unearthed without using hoist engine, has evaded what hoist engine was unearthed
Disadvantage has the characteristics that economical, safe and efficient.
In order to achieve the object of the present invention, used technical solution are as follows: it is seperated to provide a kind of earth pressure balanced shield
Side excavating construction method is originated, interim gantry is equipped in launching shaft, is connected with chute at the soil-unloading port of interim gantry,
The chute is arranged diagonally downward, and the soil outlet of the chute is located at the left and right either side of interim gantry；Before shield machine driving, first
Soil bucket is hung under the soil outlet position for moving to chute, then shield machine starts broken hole door driving, quarrel soil by screw conveyor and
Belt feeder is transported on the soil-unloading port of interim gantry, falls to Tu Douzhong then along chute；It carries out hanging native operation to soil bucket
When, by chute disassembly or pull-up, soil bucket is sling into removal, then empty soil bucket is hung and is displaced downwardly under former chute soil outlet position,
It reinstalls chute or puts down chute, re-start dress soil；After shield machine completes an endless tube piece headwork, chute is torn open
It unloads or pull-up, progress side section of jurisdiction and track lifting job pacifies chute after completing section of jurisdiction and track lifting job again
It fills or puts down, continue the unearthed operation in side after waiting for pipe sheet assembling.
As a further improvement of the present invention, the chute is formed by connecting by two sections of front and back chute, and two sections of front and back chute is equal
Including bottom wall and the side wall being fixed at left and right sides of bottom wall, the front end of the leading portion chute is fixedly connected with soil-unloading port, described
The tail end of back segment chute is equipped with soil outlet, and the objective for implementation of movement or pull-up and the movement put down of disassembly and installation is
Back segment chute.
As a further improvement of the present invention, the bottom surface of the bottom wall of the two sections of chutes in front and back is respectively welded along bottom wall length side
To the square steel of setting, the bottom surface of the two sidewalls of the two sections of chutes in front and back is respectively welded the square steel along the setting of sidewall width direction, institute
The square steel stated on bottom wall is mutually welded with the square steel on side wall.
As a further improvement of the present invention, the square steel on the square steel and side wall on the bottom wall is 30mm square steel.
As a further improvement of the present invention, the leading portion chute is 3 meters long, 1.2 meters wide, and the back segment chute is 2.2 meters long,
1.21 meters wide, the bottom wall and left and right sides wall of two sections of front and back chute are all made of 3mm thick steel plate.
As a further improvement of the present invention, the front end of the back segment chute is connected to the bottom of leading portion chute tail end.
As a further improvement of the present invention, the front end of the tail end of leading portion chute two sidewalls and back segment chute two sidewalls
On be equipped with convenient for chute installation and removal and bolt hole.
As a further improvement of the present invention, branch midleg of the interim gantry in side corresponding with chute is equipped with branch
Point, and hook gear is set in the lateral roof, the hook gear is hung with chain block, and the chute is clicked through by the branch
Row support installation, the chain block are connected on chute.
As a further improvement of the present invention, the gradient of the chute is 30~45%.
As a further improvement of the present invention, during shield machine is pushed ahead, interim gantry and chute promote therewith
Identical distance, soil bucket remain stationary.
The invention has the benefit that
One, versatile, it is highly-safe.The method of the invention is suitable for all earth pressure balance separate launchings, especially
The short Construction of Silo operating condition of water-conveyance tunnel is sufficiently used through chute in such a way that the left and right either side of interim gantry is unearthed
The working space of the left and right sides can solve the problems, such as that small space limits, so that operation of being unearthed can lift up into row handling by Men Long,
The unearthed problem for causing risk big of hoist engine is avoided, the security risk of operation in launching shaft is reduced.
Two, efficiently.It is constructed using the method for the invention, ensure that screw machine effectively efficiently unearthed operation, subtract
The cost of labor of scaling-off cleaning in well is lacked；The method of the invention widens soil bucket using gantry crane during unearthed and carries out
Dress soil, compared with the unearthed mode that hoist engine draws small soil bucket, the method for the invention greatly accelerates shield driving and is unearthed
Operating efficiency shortens the shield launching period.
Three, construction quality is ensured.It is constructed using the method for the invention, greatly shortens unearthed duty cycle,
Shorten shield launching and tunnel the time, so that shield machine is reinforced section soil body driving quickly through broken hole door and end, to subtract
Few surface subsidence and underground water are lost；In addition, improving construction environment in well, guarantee attitude of shield machine and linear control.
Four, high financial profit.It is constructed using the method for the invention, required equipment is simple, and transport is easy；The side
Method is low to working space requirement, can effectively adapt to short Construction of Silo operating condition, and no need to increase vertical shaft length, reduces the throwing to vertical shaft
Money；The method simple process is feasible, can save certain labour cost and a large amount of duration costs.
Detailed description of the invention
Fig. 1 is the chute structure schematic diagram；
Fig. 2 is the unearthed structural schematic diagram in chute side；
Description of symbols: the interim gantry of 1-, 11- soil-unloading port, 12- fulcrum, 13- hook gear, 14- chain block, 2- chute,
21- leading portion chute, 211- bottom wall, 212- side wall, 213- square steel, 214- square steel, 215- bolt hole, 22- back segment chute, the bottom 221-
Wall, 222- side wall, 223- square steel, 224- square steel, 225- bolt hole, 226- soil outlet.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Shenzhen City, Guangdong Province water-conveyance tunnel project shield-tunneling construction is using earth pressure balanced shield of the present invention point
Body originates side excavating construction method.The project launching shaft, which is served only for shield machine, goes into the well and originates and transport of materials well, engineering
It needs to carry out backfill processing after completion；Well design length 30m (actual job space 27.6m), this section of route longitudinal slope 1%, work
Armored concrete Symmetric Beam is equipped among well, shield-tunneling construction working space is narrow.Earth pressure balanced shield, EPBS construction need to be begun using seperated
Hair, but since narrow space can not be unearthed mode using conventional electric locomotive, if being unearthed again using hoist engine there are certain risk,
And inefficiency, the construction period is long, while will affect the handling of section of jurisdiction.
Earth pressure balanced shield separate launching side excavating construction method, including following construction procedure:
(1) preparation of construction: surrounding enviroment investigation, levelling of the land, march into the arena road and construction site hardening, construction water, use
The Facilities Constructions such as electricity, ventilation, are inspected for acceptance using plant, materials arrival, and construction drawing examines, confides a technological secret, operation people
Member's safety education and training is told somebody what one's real intentions are.
(2) installation of embedded parts, job platform are set up: originating frame ruler according to portal position, shield body before shield well construction of bottom plates
Very little, reaction frame structure size carries out pre-embedded steel slab installation in bottom plate in advance, and bottom plate is after the completion again in reaction frame rear I-steel
Installation connecting bridge, interim gantry 1 and operation platform are simultaneously laid with track.
(3) shield machine assembly and adjustment: shield mechanism accessory site acceptance first hangs interim gantry, connecting bridge and screw machine
It loads well and is moved to and originate frame rear, shield body is then lifted into assembly and connection of going into the well respectively；Secondly assembling machine lifting, spiral shell are carried out
The installation of rotation machine, the connection work of connecting bridge and interim gantry 1；The oil pipe that finally ground trolley is connected, circuit are drawn to underground
And be attached in shield body, shield machine debugging is carried out after the completion.
(4) the unearthed chute 2 in ground side makes: as shown in Figure 1, processing one in ground workshop during shield machine assembly and adjustment
The long 3m of item, the back segment chute 22 of the leading portion chute 21 of wide 1.2m and a long 2.2m, wide 1.21m, the tail end of back segment chute 22
Equipped with soil outlet 226, two sections of front and back chute 21,22 includes bottom wall 211,221 and is fixed at left and right sides of bottom wall 211,221
Side wall 212,222, the bottom wall 211,221 and left and right sides wall 212,222 of two sections of front and back chute 21,22 are all made of 3mm thick steel plate；
The bottom surface of the bottom wall 211,221 of two sections of front and back chute 21,22 is respectively welded the 30mm square steel along the setting of bottom wall length direction
213,223, the bottom surface of the two sidewalls 212,222 of two sections of front and back chute 21,22 is respectively welded along the setting of sidewall width direction
30mm square steel 214,224, the square steel 213,223 on bottom wall 211,221 and the square steel 214 on side wall 212,222,224 phases are welded,
By square steel 213,214,223,224 setting can reinforce the structural strength of two sections of front and back chute 21,22；Leading portion chute 21
The part tail end 20cm and the every 10cm on the front end part 20cm of 22 two sidewalls 222 of back segment chute of two sidewalls 212 are reserved at one
The bolt hole 215,225 of 22mm, in order to the installation and removal between two sections of front and back chute 21,22.
(5) the unearthed chute 2 in side is installed: as shown in Fig. 2, being connected with chute 2 at the soil-unloading port 11 of interim gantry 1, being slipped
Slot 2 is arranged diagonally downward, and the soil outlet 226 of chute 2 is located at the left and right either side of interim gantry 1.Consider the self weight and quarrel of chute 2
The impact and weight that soil is fallen weld one of Two bors d's oeuveres 5# channel steel conduct in the middle part of a side leg of the installation of chute 2 on interim gantry 1
Chute intermediate support 12, chute 2 are supported installation by fulcrum 12；Two are welded at the top of the same side of interim gantry 1 to hang
Hook device 13, hook gear 13 are hung with chain block 14.By the soil-unloading port 11 of the front end of leading portion chute 21 and interim gantry 1
It being connected and is welded and fixed with steel plate, chain block 14 is connected at the soil outlet 226 of back segment chute 22, two sections of front and back chute 21,
22 are attached fixation by reserved bolt hole 215,225, and when connection, the front end of back segment chute 22 is connected to leading portion chute 21
The bottom of tail end, and guarantee that back segment chute 22 can use 14 pull-up of chain block upwards.Chute 2 should ensure that chute after being installed
2 gradient is 30~45%, to guarantee the mobility of quarrel soil.
(6) shield driving side is unearthed: utilizing the chain block 14 on 22 both sides of back segment chute by back segment chute 22 before driving
Soil bucket 3 (soil bucket 36.5m × 1.5m × 2.5m is transported in the normal hole of shield) is then hung to interim gantry by gantry crane by pull-up
1 unearthed side and 226 position of soil outlet for being moved to back segment chute 22 is put well, puts down back segment chute 22；Then shield machine starts brokenly
Portal driving.Quarrel soil in shield machine soil storehouse is transported on the soil-unloading port 11 of interim gantry 1 by screw conveyor and belt feeder, so
It is fallen in soil bucket 3 along chute 2 afterwards.As shield forward impelling about 30cm (the shield stroke of a pipeful of soil), chute 2 and interim
Gantry 1 and then moves forward 30cm, and soil bucket 3 remains stationary.After last soil bucket 3 fills soil, by 22 pull-up of back segment chute, and pass through
Gantry crane slings soil bucket 3 translate out 22 range of back segment chute after hang out well head, be finished down after soil to hang empty soil bucket 3 and be displaced downwardly to original and go out
Under native 226 position of mouth, back segment chute 22 is put down, repeats the above steps and carries out operation of being unearthed.
(7) after shield completes endless tube piece (1.5m) headwork according to step (6), back segment chute 22 is dismantled, into
Back segment chute 22 is reinstalled after completing section of jurisdiction and track handling, is waited for by row side section of jurisdiction and track lifting job
Continue the unearthed operation in side by step (6) after pipe sheet assembling.
Earth pressure balanced shield, EPBS separate launching side, which is unearthed, effectively overcomes the short shaft space limitation of water-conveyance tunnel, has saved warp
Ji cost.Also, side, which is unearthed, effectively avoids the unearthed existing biggish security risk of hoist engine, meanwhile, side goes out
Soil also greatly accelerates shield driving speed, shortens the duration.
In conclusion test is used for multiple times in the present invention, judging from the effect of using the test, the provable present invention can reach it
Desired purpose, practical value are unquestionable.Embodiment provided above is only used to conveniently illustrate the present invention, not
It is intended that the present invention is limited in any way, any those of ordinary skill in the art, if not departing from the present invention
In the range of mentioned technical characteristic, the equivalence enforcement locally changed or modified made by disclosed technology contents is utilized
Example, and without departing from technical feature content of the invention, in the range of still falling within the technology of the present invention feature.
Claims (10)
1. a kind of earth pressure balanced shield separate launching side excavating construction method, it is characterised in that: be equipped in launching shaft
Interim gantry is connected with chute at the soil-unloading port of interim gantry, and the chute is arranged diagonally downward, the soil outlet of the chute
Positioned at the left and right either side of interim gantry；Before shield machine driving, first soil bucket is hung under the soil outlet position for moving to chute, then shield
Structure machine starts broken hole door driving, and quarrel soil is transported on the soil-unloading port of interim gantry by screw conveyor and belt feeder, then along
Chute falls to Tu Douzhong；When soil bucket carries out hanging native operation, by chute disassembly or pull-up, soil bucket is sling into removal,
Then empty soil bucket is hung and is displaced downwardly under former chute soil outlet position, reinstalled chute or put down chute, re-start dress soil；
After shield machine completes an endless tube piece headwork, by chute disassembly or pull-up, side section of jurisdiction and track lifting job are carried out,
After completing section of jurisdiction and track lifting job, chute is reinstalled or put down, is continued after waiting for pipe sheet assembling
Side is unearthed operation；The handling of above-mentioned soil bucket, section of jurisdiction and track is all made of gantry crane progress.
2. a kind of earth pressure balanced shield separate launching side according to claim 1 excavating construction method, feature exist
In: the chute is formed by connecting by two sections of front and back chute, and two sections of front and back chute includes bottom wall and is fixed at left and right sides of bottom wall
Side wall, the front end of the leading portion chute is fixedly connected with soil-unloading port, and the tail end of the back segment chute is equipped with soil outlet, tears open
The objective for implementation of the movement or pull-up unloading and install and the movement put down is back segment chute.
3. a kind of earth pressure balanced shield separate launching side according to claim 2 excavating construction method, feature exist
In: the bottom surface of the bottom wall of the two sections of chutes in front and back is respectively welded the square steel along the setting of bottom wall length direction, two sections of front and back chute
The bottom surface of two sidewalls is respectively welded the square steel along the setting of sidewall width direction, the square steel on square steel and side wall on the bottom wall
Mutually weld.
4. a kind of earth pressure balanced shield separate launching side according to claim 3 excavating construction method, feature exist
In: the square steel on square steel and side wall on the bottom wall is 30mm square steel.
5. a kind of earth pressure balanced shield separate launching side according to claim 2 excavating construction method, feature exist
In: the leading portion chute is 3 meters long, 1.2 meters wide, and the back segment chute is 2.2 meters long, 1.21 meters wide, the bottom wall of the two sections of chutes in front and back
3mm thick steel plate is all made of with left and right sides wall.
6. a kind of earth pressure balanced shield separate launching side according to claim 2 excavating construction method, feature exist
In: the front end of the back segment chute is connected to the bottom of leading portion chute tail end.
7. a kind of earth pressure balanced shield separate launching side according to claim 2 excavating construction method, feature exist
In be equipped on: the tail end of leading portion chute two sidewalls and the front end of back segment chute two sidewalls convenient for chute installation and removal with
Bolt hole.
8. a kind of earth pressure balanced shield separate launching side according to claim 2 excavating construction method, feature exist
In: branch midleg of the interim gantry in side corresponding with chute is equipped with fulcrum, and hook gear, institute is arranged in the lateral roof
It states hook gear and is hung with chain block, the chute is supported installation by the fulcrum, and the chain block is connected to
On chute, the gradient of the chute is 30~45%.
9. a kind of earth pressure balanced shield separate launching side according to claim 1 excavating construction method, feature exist
In: the gradient of the chute is 30~45%.
10. a kind of earth pressure balanced shield separate launching side according to claim 1 excavating construction method, feature exist
In: during shield machine is pushed ahead, interim gantry and chute promote identical distance therewith, and soil bucket remains stationary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391499.8A CN109441459B (en) | 2018-11-21 | 2018-11-21 | Earth pressure balance type shield split starting side unearthing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391499.8A CN109441459B (en) | 2018-11-21 | 2018-11-21 | Earth pressure balance type shield split starting side unearthing construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441459A true CN109441459A (en) | 2019-03-08 |
| CN109441459B CN109441459B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811391499.8A Active CN109441459B (en) | 2018-11-21 | 2018-11-21 | Earth pressure balance type shield split starting side unearthing construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109441459B (en) |
Cited By (6)
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| CN110219661A (en) * | 2019-07-12 | 2019-09-10 | 中铁工程装备集团有限公司 | Applied to minimum starting well separate launching corollary apparatus and originate construction method |
| CN110510367A (en) * | 2019-09-16 | 2019-11-29 | 粤水电轨道交通建设有限公司 | A kind of active belt regulating device |
| CN111255466A (en) * | 2020-01-20 | 2020-06-09 | 中铁十二局集团第二工程有限公司 | Construction method for single shaft starting by changing tunnel into shield by mining method |
| CN112682060A (en) * | 2020-12-11 | 2021-04-20 | 中铁工程服务有限公司 | Novel double-slag-hole chute and construction method thereof |
| CN114215541A (en) * | 2021-12-21 | 2022-03-22 | 中铁六局集团有限公司 | Shield constructs components of a whole that can function independently and starts with interim platform truck frock |
| CN114412497A (en) * | 2022-01-13 | 2022-04-29 | 华侨大学 | Rapid unearthing and feeding construction method for normal tunneling of interval short shaft shield |
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| CN110510367A (en) * | 2019-09-16 | 2019-11-29 | 粤水电轨道交通建设有限公司 | A kind of active belt regulating device |
| CN111255466A (en) * | 2020-01-20 | 2020-06-09 | 中铁十二局集团第二工程有限公司 | Construction method for single shaft starting by changing tunnel into shield by mining method |
| CN112682060A (en) * | 2020-12-11 | 2021-04-20 | 中铁工程服务有限公司 | Novel double-slag-hole chute and construction method thereof |
| CN112682060B (en) * | 2020-12-11 | 2023-01-06 | 中铁工程服务有限公司 | Novel double-slag-hole chute and construction method thereof |
| CN114215541A (en) * | 2021-12-21 | 2022-03-22 | 中铁六局集团有限公司 | Shield constructs components of a whole that can function independently and starts with interim platform truck frock |
| CN114412497A (en) * | 2022-01-13 | 2022-04-29 | 华侨大学 | Rapid unearthing and feeding construction method for normal tunneling of interval short shaft shield |
| CN114412497B (en) * | 2022-01-13 | 2024-06-07 | 华侨大学 | Construction method for quick soil discharging and feeding of normal tunneling of shield of short-interval vertical shaft |
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|---|---|
| CN109441459B (en) | 2020-07-28 |
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