CN106285696B - Sand-pebble layer rectangular shield top pick earth pressure balance establishes construction method - Google Patents
Sand-pebble layer rectangular shield top pick earth pressure balance establishes construction method Download PDFInfo
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- CN106285696B CN106285696B CN201610975487.4A CN201610975487A CN106285696B CN 106285696 B CN106285696 B CN 106285696B CN 201610975487 A CN201610975487 A CN 201610975487A CN 106285696 B CN106285696 B CN 106285696B
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000004927 clay Substances 0.000 claims abstract description 46
- 230000008878 coupling Effects 0.000 claims abstract description 33
- 238000010168 coupling process Methods 0.000 claims abstract description 33
- 238000005859 coupling reaction Methods 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 230000005641 tunneling Effects 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 7
- 239000002689 soil Substances 0.000 claims description 35
- 229920001971 elastomer Polymers 0.000 claims description 28
- 239000005060 rubber Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 13
- 239000004576 sand Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000007306 turnover Effects 0.000 claims description 10
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- 239000000440 bentonite Substances 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 238000010009 beating Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000010433 feldspar Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims 1
- 229920002472 Starch Polymers 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000010412 perfusion Effects 0.000 claims 1
- -1 polypropylene Polymers 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 239000011800 void material Substances 0.000 abstract description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 239000011435 rock Substances 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
-
- 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
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of sand-pebble layer rectangular shield top pick earth pressure balances to establish construction method, it is for the sand-pebble layer structure under particular condition, before on rectangular shield top, pick machine originates and in driving, clay prepared by the stratum injection dug around machine shield shell and concrete tube coupling to rectangular shield top, the formation void generated in filling tunneling process, to maintain the earth pressure balance in tunneling process, to reduce the possibility of roadbed subsidence, ensure the safety of construction.
Description
Technical field
The invention belongs to technical field of building construction, more particularly to earth pressure balance is dug on a kind of sand-pebble layer rectangular shield top
Establish construction method.
Background technology
Sand-pebble layer rectangular shield top is dug in work progress, before rectangular shield top pick machine driving and in driving, is all needed
The balance of soil pressure in channel is maintained, is otherwise easy to happen roadbed subsidence and possibility that road surface collapses.
It is to rely on to wear Renminnan Road rectangular shield top pick walkway engineering off field with the underground parking of Chengdu Sichuan University,
The underground parking of Chengdu Sichuan University is worn Renminnan Road rectangular shield top pick walkway and is mainly passed through from boulder bed off field, at
Renminnan Road three sections of sand-pebble layer cobble contents in city are high, and sky is susceptible in stratum in rectangular shield top pick machine driving
Gap, it is even empty, it needs to take and effectively fills up measure to maintain earth pressure balance in hole, to ensure being normally carried out for construction.
Therefore it is directed to the sand-pebble layer, the foundation of earth pressure balance in work progress is dug on rectangular shield top, for applying for entire channel
Work is vital.
Invention content
It is an object of the invention to：In view of the above problems, providing a kind of can effectively maintain in tunneling process
Earth pressure balance, it is ensured that the sand-pebble layer rectangular shield top pick earth pressure balance that headwork is normally carried out establishes construction method.
The technical proposal of the invention is realized in this way：Sand-pebble layer rectangular shield top pick earth pressure balance establishes construction party
Method, it is characterised in that：Include the following steps：
a）, analysis for the sand-pebble layer soil body, the sand-pebble layer includes boulder bed and sandy soils, the cobble
In the soil body of layer, the cobble content of slightly close boulder bed is 55%~60%, and grain size is 3 mm~5mm, in the cobble of close boulder bed contain
Amount is 60%~70%, and grain size is 4 mm~5mm, and the cobble content of closely knit boulder bed is more than 70%, and grain size is 5 mm~8mm；It is described
In the soil body of sandy soils, the thickness of fine sand layer is 1.5m~2.7m, and the thickness of middle layer of sand is 0.8m~1.1m, the fine sand layer and
Middle layer of sand is made of the hard particles of feldspar, quartz and sandstone；
b）, for the peculiar composed structure of above-mentioned sand-pebble layer, prepare clay, the clay is by calcium-base bentonite, poly-
Acrylamide and water composition, the wherein mass percent of calcium-base bentonite are 60%~65%, the quality percentage of polyacrylamide
Than being 0.3%~0.6%, remaining is water；
c）, dig in machine tunneling process on rectangular shield top, the clay of above-mentioned preparation is set by what is reserved on concrete tube coupling
Change the preformed hole injection stratum on injected hole and shield top pick machine shield shell, the range of injection include shield top pick machine itself and its
Rear concrete tube coupling, shield top are dug machine and are injected by the preformed hole at the top of anterior shield and shield shell, and rear concrete tube coupling is by setting
Injected hole injection is changed, the clay determines injection phase and injection rate according to soil pressure sensor and roadbed subsidence situation.
Sand-pebble layer rectangular shield of the present invention top pick earth pressure balance establishes construction method, in the step c）
In, it is headed into stratum by pipe bending cylinder by the concrete tube coupling originated on frame is positioned over, on the concrete tube coupling, along it
Radial direction is provided with multiple replacement grouting holes, and the multiple replacement grouting hole is circumferentially distributed at a certain distance along concrete tube coupling, institute
The medial and lateral anchor ring that concrete tube coupling is run through in replacement grouting hole is stated, during the concrete tube coupling is headed into, the clay
Pipeline of the clay of above-mentioned preparation through being connect with replacement grouting hole is injected into outside concrete tube coupling by the soil pump of beating in channel
The stratum in week.
Sand-pebble layer rectangular shield of the present invention top pick earth pressure balance establishes construction method, in new concrete
After tube coupling assembly is completed, before normal driving starts, if soil pressure force value is unable to reach the requirement normally tunneled, need from
Clay is injected to corresponding position in the anterior shield preformed hole of shield top pick machine, primary slag is often gone out in tunneling process, observes soil pressure
Whether force value reaches the condition of earth pressure balance, then decides whether to inject clay, injects clay amount every time and is shown by soil pressure case
Numerical value determine, condition of the injection clay until reaching earth pressure balance.
Sand-pebble layer rectangular shield of the present invention top pick earth pressure balance establishes construction method, the rectangular shield
Before top pick machine originates, earth pressure balance before originating is provided at portal and establishes system, it is described originate before earth pressure balance establish system
It fills in barn hole including portal sealing device and portal, the portal sealing device is arranged in the hole marginal portion of portal, the hole
Door hole of filling in barn is arranged in portal ring beam, and the portal fill in barn hole input end be located at portal it is outer above, outlet end is located at
In hole, before on rectangular shield top, pick machine originates, the front end of the rectangular shield top pick machine is placed in portal, the rectangular shield
Shell and the portal sealing device for pushing up pick machine are fitted close, make between the shell and surrounding formation of the rectangular shield top pick machine with
And the gap excavated between face and native storehouse forms opposing seal state, injects clay by portal hole of filling in barn and fills the sky
Gap and establish soil pressure.
Sand-pebble layer rectangular shield of the present invention top pick earth pressure balance establishes construction method, is filled out in the portal
Storehouse is provided with intrusion pipe in hole, and clay is injected into hole by the intrusion pipe, between the intrusion pipe and portal fill in barn hole
Annular space in blocked filled with sealing element.
Sand-pebble layer rectangular shield of the present invention top pick earth pressure balance establishes construction method, the portal sealing
Device includes pre-embedded steel slab, rubber slab and pressing plate, and the pre-embedded steel slab is arranged in portal ring beam, and several blocks of rubber slabs are along hole
Mouth edge arrangement constitutes cord fabric type structure, and the outer end of each rubber slab is connected and fixed by pressing plate and pre-embedded steel slab, the rubber
The inner end of offset plate extends inwardly, and the opening size that several blocks of rubber slabs are formed is less than the dimension of opening of portal, works as institute
The front end of rectangular shield top pick machine is stated when being placed in portal, the inner end of the rubber slab is along rectangular shield top pick machine operation side
Sealing is cooperatively formed to bending, and with the shell of rectangular shield top pick machine.
Sand-pebble layer rectangular shield of the present invention top pick earth pressure balance establishes construction method, on the pressing plate
Be provided with folding paper sealing clamp, the folding paper sealing clamp include the fixed plate being fixedly connected on pressing plate and with fixation
The hinged turnover panel of plate, the turnover panel are located at the lateral surface of rubber slab extended segment inwardly, before machine is dug on the rectangular shield top
When end is placed in portal, the turnover panel pushes down the rubber slab of bending along rectangular shield top pick machine traffic direction bending, with
Make rubber slab in by hole outside clay when flowing pressure without turning up.
The present invention is directed to the sand-pebble layer structure under particular condition, before on rectangular shield top, pick machine originates and in driving,
Clay prepared by the stratum injection dug around machine shield shell and tube coupling to rectangular shield top, it is empty to fill the stratum generated in tunneling process
Gap, to reduce the possibility of roadbed subsidence, ensures the safety of construction to maintain the earth pressure balance in tunneling process.
The beneficial effects of the invention are as follows：
1, the earth pressure balance in tunneling process is maintained, it is ensured that headwork is normally carried out.
2, fill the formation void that generates in tunneling process, can effectively control surface subsidence, avoid the occurrence of ground collapse,
Depression.
If 3, in tunneling process, shield top digs machine posture and relatively large deviation occurs, can be rectified a deviation by injecting clay.
Description of the drawings
Fig. 1 be arranged at the portal in the present invention originate before earth pressure balance establish the structural schematic diagram of system.
Fig. 2 is the structural schematic diagram that earth pressure balance establishes portal sealing device in system before originating.
It is marked in figure：1 is portal sealing device, and 2 fill in barn hole for portal, and 3 be portal, and 4 be portal ring beam, and 5 be pre-buried steel
Plate, 6 be rubber slab, and 7 be pressing plate, and 8 be fixed plate, and 9 be turnover panel.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, right below in conjunction with attached drawing and embodiment
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment：A kind of sand-pebble layer rectangular shield top pick earth pressure balance establishes construction method, includes the following steps：
a）, analysis for the sand-pebble layer soil body, the sand-pebble layer includes boulder bed and sandy soils, the cobble
In the soil body of layer, the cobble content of slightly close boulder bed is 55%~60%, and grain size is 3 mm~5mm, and natural density γ is 20.5
kN/m3, deformation modulus Eo is 20~26 Mpa, and internal friction angle Φ is 30 °~37 °, characteristic load bearing capacity fakFor 300-350
kPa；In close boulder bed cobble content be 60%~70%, grain size be 4 mm~5mm, natural density γ be 21.0 kN/m3, become
Shape modulus Eo is 30~36 Mpa, and internal friction angle Φ is 40 °~45 °, characteristic load bearing capacity fakFor 500~560 kPa；Closely knit ovum
The cobble content of rock layers is more than 70%, and grain size is 5 mm~8mm, and natural density γ is 22.0 kN/m3, deformation modulus Eo be 42~
50 Mpa, internal friction angle Φ are 42 °~47 °, characteristic load bearing capacity fakFor 800~880 kPa；In the soil body of the sandy soils,
The thickness of fine sand layer is 1.5m~2.7m, and natural density γ is 18.5 kN/m3, deformation modulus Eo is 6~9 Mpa, internal friction angle
Φ is 18 °~23 °, characteristic load bearing capacity fakFor 90~100 kPa；The thickness of middle layer of sand is 0.8m~1.1m, natural density γ
For 19.0 kN/m3, deformation modulus Eo is 7~10 Mpa, and internal friction angle Φ is 19 °~24 °, characteristic load bearing capacity fakFor 110~
120 kPa, the fine sand layer and middle layer of sand are made of the hard particles of feldspar, quartz and sandstone.
b）, for the peculiar composed structure of above-mentioned sand-pebble layer, prepare clay, the clay is by calcium-base bentonite, poly-
Acrylamide and water composition, the wherein mass percent of calcium-base bentonite are 60%~65%, the quality percentage of polyacrylamide
Than being 0.3%~0.6%, remaining is water.In the present embodiment, the preparation of the clay use mass percent for 62% calcium base
The polyacrylamide that bentonite and mass percent are 0.4%, remaining is water.
c）, dig in machine tunneling process on rectangular shield top, the clay of above-mentioned preparation is set by what is reserved on concrete tube coupling
Change the preformed hole injection stratum on injected hole and shield top pick machine shield shell, the range of injection include shield top pick machine itself and its
Rear concrete tube coupling, shield top are dug machine and are injected by the preformed hole at the top of anterior shield and shield shell, and rear concrete tube coupling is by setting
Injected hole injection is changed, the clay determines injection phase and injection rate according to soil pressure sensor and roadbed subsidence situation.Example
Such as, it is dug in machine tunneling process on rectangular shield top, somewhere depression several centimeters, it is heavy just to corresponding place injection clay
Sunken place can restore.
In the step c）In, it is headed into stratum by pipe bending cylinder by the concrete tube coupling originated on frame is positioned over,
On the concrete tube coupling, multiple replacement grouting holes are radially provided with, the multiple replacement grouting hole is along concrete tube coupling
Circumferential to be distributed at a certain distance, the medial and lateral anchor ring of concrete tube coupling, the multiple replacement grouting are run through in the replacement grouting hole
The axial medium position in corresponding concrete tube coupling is arranged in hole, and during the concrete tube coupling is headed into, the clay is logical
Pipeline of the clay of above-mentioned preparation through being connect with replacement grouting hole is injected into concrete tube coupling periphery by the soil pump of beating crossed in channel
Stratum.
Wherein, after new concrete tube coupling assembly is completed, before normal driving starts, if soil pressure force value can not reach
To the requirement normally tunneled, then needs to inject clay to corresponding position from the anterior shield preformed hole that machine is dug on shield top, tunnel
Often go out primary slag in the process, whether observation soil pressure force value reaches the condition of earth pressure balance, then decides whether to inject clay, notes every time
Enter clay amount to be determined by the numerical value that soil pressure case is shown, condition of the injection clay until reaching earth pressure balance.
As shown in Figure 1, before the rectangular shield top pick machine originates, it is provided with earth pressure balance before originating at portal and establishes system
System, it is described originate before earth pressure balance establish that system includes portal sealing device 1 and portal is filled in barn hole 2, the portal sealing device 1
It is arranged in the hole marginal portion of portal 3, portal hole 2 of filling in barn is arranged in portal ring beam 4, and the portal is filled in barn hole 2
Input end be located at the outer top of portal 3, outlet end is located in hole, and the fill in barn aperture in hole of the portal is Φ 110mm, described
Portal is filled in barn the intrusion pipe of the Φ 60mm that outer side band valve is provided in hole 2, and the intrusion pipe is stretched into from outer skew back in hole, length
About 3m is blocked in the annular space between the intrusion pipe and portal fill in barn hole 2 filled with sealing element, on rectangular shield top
Before pick machine originates, shield top is dug equipment debugging and is completed, and after no-load running is normal, equipment is promoted left away from face 10cm in portal
The front end on the right side, i.e., the described rectangular shield top pick machine is placed in portal 3, and the shell of the rectangular shield top pick machine is sealed with portal
Device 1 is fitted close, make between the shell and surrounding formation of rectangular shield top pick machine and excavate face and native storehouse it
Between gap form opposing seal state, clay is injected into hole by the portal intrusion pipe being arranged in hole 2 of filling in barn, to fill
It states gap and establishes soil pressure.
As shown in Fig. 2, the portal sealing device 1 includes pre-embedded steel slab 5, rubber slab 6 and pressing plate 7, the pre-buried steel
Plate 5 is arranged in portal ring beam 4, and several blocks of rubber slabs 6 are arranged along hole edge constitutes cord fabric type structure, each rubber slab 6
Outer end is connected and fixed by pressing plate 7 and pre-embedded steel slab 5, and the inner end of the rubber slab 6 extends inwardly, several pieces of rubbers
The opening size that offset plate 6 is formed is less than the dimension of opening of portal 3, when the front end that machine is dug on the rectangular shield top is placed in portal 3
When interior, the inner end of the rubber slab 6 is bent along rectangular shield top pick machine traffic direction, and the shell of machine is dug with rectangular shield top
Cooperatively form sealing.
Wherein, folding paper sealing clamp is provided on the pressing plate 7, the folding paper sealing clamp includes being fixedly connected
Fixed plate 8 on pressing plate 7 and the turnover panel 9 hinged with fixed plate 8, the turnover panel 9 are located at the extended segment inwardly of rubber slab 6
Lateral surface, when the front end that machine is dug on the rectangular shield top is placed in portal 3, the turnover panel 9 is along rectangular shield top pick machine fortune
Line direction is bent, and the rubber slab of bending 6 is pushed down, and to prevent rubber slab from turning up when clay pressure in by hole, and is gone out
The phenomenon that existing clay outflow.
Before pick machine originates on rectangular shield top, the good clay of filling in barn of mixing is passed through into hole injection of filling in barn, clay filling top pick
The gap between gap and excavation face and native storehouse between casing body and surrounding formation, observation top each site pressure of pick machine
When the numerical value that sensor is shown reaches requirement, illustrates that the foundation of the earth pressure balance before originating finishes, can formally be tunneled.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (7)
1. sand-pebble layer rectangular shield top pick earth pressure balance establishes construction method, it is characterised in that：Include the following steps：
a）, analysis for the sand-pebble layer soil body, the sand-pebble layer includes boulder bed and sandy soils, the boulder bed
In the soil body, the cobble content of slightly close boulder bed is 55%~60%, and grain size is 3 mm~5mm, in the cobble content of close boulder bed be
60%~70%, grain size is 4 mm~5mm, and the cobble content of closely knit boulder bed is more than 70%, and grain size is 5 mm~8mm；The sand
In the soil body of layer, the thickness of fine sand layer is 1.5m~2.7m, and the thickness of middle layer of sand is 0.8m~1.1m, the fine sand layer and middle sand
Layer is made of the hard particles of feldspar, quartz and sandstone；
b）, for the peculiar composed structure of above-mentioned sand-pebble layer, prepare clay, the clay is by calcium-base bentonite, polypropylene
Amide and water composition, the wherein mass percent of calcium-base bentonite is 60%~65%, and the mass percent of polyacrylamide is
0.3%~0.6%, remaining is water；
c）, dig in machine tunneling process on rectangular shield top, the clay of above-mentioned preparation passes through the displacement note reserved on concrete tube coupling
It starches the preformed hole on hole and shield top pick machine shield shell and injects stratum, the range of injection includes shield top pick machine itself and its rear
Concrete tube coupling, shield top are dug machine and are injected by the preformed hole at the top of anterior shield and shield shell, and rear concrete tube coupling is noted by replacing
Hole injection is starched, the clay determines injection phase and injection rate according to soil pressure sensor and roadbed subsidence situation.
2. sand-pebble layer rectangular shield according to claim 1 top pick earth pressure balance establishes construction method, feature exists
In：In the step c）In, it is headed into stratum by pipe bending cylinder by the concrete tube coupling originated on frame is positioned over, described mixed
On solidifying soil tube coupling, multiple replacement grouting holes are radially provided with, the multiple replacement grouting hole is circumferentially pressed along concrete tube coupling
One determining deviation is distributed, and the medial and lateral anchor ring of concrete tube coupling is run through in the replacement grouting hole, is headed into the concrete tube coupling
In the process, the clay of above-mentioned preparation is passed through the pipeline being connect with replacement grouting hole injection by the clay by the soil pump of beating in channel
To the stratum of concrete tube coupling periphery.
3. sand-pebble layer rectangular shield according to claim 2 top pick earth pressure balance establishes construction method, feature exists
In：After new concrete tube coupling assembly is completed, before normal driving starts, if soil pressure force value is unable to reach normal driving
Requirement, then need from shield top dig machine anterior shield preformed hole in corresponding position inject clay, often go out in tunneling process
Primary slag, observation soil pressure force value whether reach the condition of earth pressure balance, then decide whether inject clay, every time inject clay amount by
The numerical value that soil pressure case is shown determines, injects condition of the clay until reaching earth pressure balance.
4. sand-pebble layer rectangular shield according to claim 3 top pick earth pressure balance establishes construction method, feature exists
In：Before the rectangular shield top pick machine originates, it is provided with earth pressure balance before originating at portal and establishes system, it is described to originate preceding soil
It includes portal sealing device to flatten weighing apparatus and establish system（1）It fills in barn hole with portal（2）, the portal sealing device（1）It is arranged in hole
Door（3）Hole marginal portion, the portal fills in barn hole（2）It is arranged in portal ring beam（4）It is interior, and the portal is filled in barn hole（2）
Input end be located at portal（3）Outer top, outlet end are located in hole, before on rectangular shield top, pick machine originates, the rectangle shield
The front end of structure top pick machine is placed in portal（3）It is interior, the shell and portal sealing device of the rectangular shield top pick machine（1）Closely match
It closes, the gap that the rectangular shield top is dug between the shell and surrounding formation of machine and excavated between face and native storehouse is made to be formed
Opposing seal state is filled in barn hole by portal（2）Injection clay fills the gap and establishes soil pressure.
5. sand-pebble layer rectangular shield according to claim 4 top pick earth pressure balance establishes construction method, feature exists
In：It fills in barn hole in the portal（2）It is inside provided with intrusion pipe, clay is injected into hole by the intrusion pipe, in the perfusion
Pipe is filled in barn hole with portal（2）Between annular space in blocked filled with sealing element.
6. sand-pebble layer rectangular shield according to claim 4 or 5 top pick earth pressure balance establishes construction method, feature
It is：The portal sealing device（1）Including pre-embedded steel slab（5）, rubber slab（6）And pressing plate（7）, the pre-embedded steel slab（5）
It is arranged in portal ring beam（4）It is interior, several blocks of rubber slabs（6）It is arranged along hole edge and constitutes cord fabric type structure, each rubber slab（6）
Outer end pass through pressing plate（7）With pre-embedded steel slab（5）It is connected and fixed, the rubber slab（6）Inner end extend inwardly, it is described
Several blocks of rubber slabs（6）The opening size of formation is less than portal（3）Dimension of opening, when the rectangular shield top dig machine front end
Portion is placed in portal（3）When interior, the rubber slab（6）Inner end along rectangular shield top pick machine traffic direction bending, and and rectangle
The shell of shield top pick machine cooperatively forms sealing.
7. sand-pebble layer rectangular shield according to claim 6 top pick earth pressure balance establishes construction method, feature exists
In：In the pressing plate（7）On be provided with folding paper sealing clamp, the folding paper sealing clamp includes being fixedly connected on pressing plate
（7）On fixed plate（8）And and fixed plate（8）Hinged turnover panel（9）, the turnover panel（9）Positioned at rubber slab（6）Prolong inwardly
The lateral surface for stretching section, when the front end that machine is dug on the rectangular shield top is placed in portal（3）When interior, the turnover panel（9）Along rectangle shield
The bending of machine traffic direction is dug on structure top, and by the rubber slab of bending（6）It pushes down, so that rubber slab（6）Clay outflows in by hole
Without turning up when pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975487.4A CN106285696B (en) | 2016-11-07 | 2016-11-07 | Sand-pebble layer rectangular shield top pick earth pressure balance establishes construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975487.4A CN106285696B (en) | 2016-11-07 | 2016-11-07 | Sand-pebble layer rectangular shield top pick earth pressure balance establishes construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106285696A CN106285696A (en) | 2017-01-04 |
| CN106285696B true CN106285696B (en) | 2018-07-13 |
Family
ID=57720948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610975487.4A Active CN106285696B (en) | 2016-11-07 | 2016-11-07 | Sand-pebble layer rectangular shield top pick earth pressure balance establishes construction method |
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| Country | Link |
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| CN109057806A (en) * | 2018-08-31 | 2018-12-21 | 粤水电轨道交通建设有限公司 | A kind of development machine clay delivery pump method for correcting error |
| CN110219658B (en) * | 2019-07-25 | 2024-04-12 | 中建八局轨道交通建设有限公司 | Device for preventing shield tunneling machine from head planting and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56122497A (en) * | 1980-02-29 | 1981-09-25 | Toyo Construction | Earth pressure balance type shield excavator |
| CN1391053A (en) * | 2002-07-25 | 2003-01-15 | 上海隧道工程股份有限公司 | Earth pressure balancing technology for laying rectangular top pipe |
| CN104373131A (en) * | 2014-11-04 | 2015-02-25 | 中交第二航务工程局有限公司 | Construction method of earth pressure balance shield tunneling machine muck pressure maintaining pumping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226400B (en) * | 2011-05-31 | 2012-09-12 | 中铁隧道装备制造有限公司 | Method and system for preventing clamping stagnation of shield body due to too large frictional resistance in earth pressure balance shield machine |
-
2016
- 2016-11-07 CN CN201610975487.4A patent/CN106285696B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56122497A (en) * | 1980-02-29 | 1981-09-25 | Toyo Construction | Earth pressure balance type shield excavator |
| CN1391053A (en) * | 2002-07-25 | 2003-01-15 | 上海隧道工程股份有限公司 | Earth pressure balancing technology for laying rectangular top pipe |
| CN104373131A (en) * | 2014-11-04 | 2015-02-25 | 中交第二航务工程局有限公司 | Construction method of earth pressure balance shield tunneling machine muck pressure maintaining pumping device |
Non-Patent Citations (2)
| Title |
|---|
| 矩形盾构ECL工法砼衬砌模板拼装机的设计与应用;黄均龙等;《西部探矿工程》;20061225(第12期);226-230 * |
| 矩形顶管机出始发井帘布橡胶板设计;佘清雅等;《建筑施工》;20100228;第32卷(第02期);101-103 * |
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