CN106285696A - Sand-pebble layer rectangular shield top digging pressure balanced sets up construction method - Google Patents
Sand-pebble layer rectangular shield top digging pressure balanced sets up construction method Download PDFInfo
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- CN106285696A CN106285696A CN201610975487.4A CN201610975487A CN106285696A CN 106285696 A CN106285696 A CN 106285696A CN 201610975487 A CN201610975487 A CN 201610975487A CN 106285696 A CN106285696 A CN 106285696A
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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
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000005641 tunneling Effects 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 38
- 229920001971 elastomer Polymers 0.000 claims description 28
- 239000005060 rubber Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 24
- 239000004576 sand Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000007306 turnover Effects 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 229910052925 anhydrite Inorganic materials 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- 239000004744 fabric 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 description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 230000010412 perfusion Effects 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 1
- 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000008859 change Effects 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
- 238000002372 labelling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 239000004575 stone 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 digging pressure balanced and set up construction method, it is for the sand-pebble layer structure under particular condition, before rectangular shield top pick machine originates and in driving, the clay of preparation is injected on stratum around rectangular shield top pick machine shield shell and concrete tube coupling, fill the formation void produced in tunneling process, thus maintain the earth pressure balance in tunneling process, to reduce the possibility of roadbed subsidence, it is ensured that the safety of construction.
Description
Technical field
The invention belongs to technical field of building construction, particularly to a kind of sand-pebble layer rectangular shield top digging pressure balanced
Set up construction method.
Background technology
In sand-pebble layer rectangular shield top pick work progress, before rectangular shield top pick machine driving and in driving, all need
The balance of soil pressure in passage to be maintained, is otherwise susceptible to roadbed subsidence and probability that road surface subsides.
With the underground parking of Chengdu Sichuan University wear after the match pick walkway, Renminnan Road rectangular shield top engineering for rely on,
The underground parking of Chengdu Sichuan University is worn pick walkway, Renminnan Road rectangular shield top after the match and is mainly passed from boulder bed, becomes
Renminnan Road three sections of sand-pebble layer cobble content in city are high, easily occur sky when rectangular shield top pick machine driving in stratum
Gap, even cavity, need to take effectively to fill up measure to maintain earth pressure balance in hole, to ensure being normally carried out of construction.
Therefore for this sand-pebble layer, in rectangular shield top pick work progress, the foundation of earth pressure balance, executes for whole passage
Work it is critical that.
Summary of the invention
It is an object of the invention to: for the problem of above-mentioned existence, it is provided that a kind of can effectively maintain in tunneling process
Earth pressure balance, it is ensured that the sand-pebble layer rectangular shield top digging pressure balanced that headwork is normally carried out sets up construction method.
The technical scheme is that and be achieved in that: sand-pebble layer rectangular shield top digging pressure balanced sets up construction party
Method, it is characterised in that: comprise the following steps:
A), for the analysis of the sand-pebble layer soil body, described sand-pebble layer includes boulder bed and sandy soils, described boulder bed
In the soil body, the cobble content of the closeest boulder bed is 55%～60%, and particle diameter is 3 mm～5mm, in the cobble content of close boulder bed be
60%～70%, particle diameter is 4 mm～5mm, and the cobble content of closely knit boulder bed is more than 70%, and particle diameter is 5 mm～8mm；Described 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, described fine sand layer and medium sand
Layer is formed by the hard particles of Anhydrite, quartz and sandstone；
B), for the peculiar composition structure of above-mentioned sand-pebble layer, preparing clay, described clay is by calcium-base bentonite, polypropylene
Amide and water composition, wherein the mass percent of calcium-base bentonite is 60%～65%, and the mass percent of polyacrylamide is
0.3%～0.6%, remaining is water；
C), in rectangular shield top pick machine tunneling process, the clay of above-mentioned preparation is noted by displacement reserved on concrete tube coupling
Preformed hole on slurry hole and shield top pick machine shield shell injects stratum, and the scope of injection includes shield top pick machine self and rear thereof
Concrete tube coupling, pick machine in shield top is injected by the preformed hole in anterior shield and shield roof portion, and rear concrete tube coupling is noted by displacement
Slurry hole is injected, and described clay, according to soil pressure sensor and roadbed subsidence situation, determines injection phase and injection rate.
Sand-pebble layer rectangular shield top digging pressure balanced of the present invention sets up construction method, and it is in described step c)
In, head in stratum by pipe bending cylinder by being positioned over the concrete tube coupling originated on frame, on described concrete tube coupling, along it
Being radially arranged multiple replacement grouting hole, the plurality of replacement grouting hole is distributed at a certain distance along concrete tube coupling circumference, institute
State replacement grouting hole and run through the medial and lateral anchor ring of concrete tube coupling, during described concrete tube coupling is headed into, described clay
By the soil pump of beating in passage, the pipeline that the clay warp of above-mentioned preparation is connected with replacement grouting hole is injected into outside concrete tube coupling
The stratum in week.
Sand-pebble layer rectangular shield top digging pressure balanced of the present invention sets up construction method, and it is at new concrete
After tube coupling assembly completes, before normal driving starts, if soil pressure force value is unable to reach the requirement of normal driving, then need from
The anterior shield preformed hole of shield top pick machine injects clay to corresponding position, tunneling process often goes out primary slag, 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, inject clay until reaching the condition of earth pressure balance.
Sand-pebble layer rectangular shield top digging pressure balanced of the present invention sets up construction method, its described rectangular shield
Top before pick machine originates, is provided with earth pressure balance before originating at portal and sets up system, described in originate front earth pressure balance and set up system
Filling in barn hole including portal sealing device and portal, described portal sealing device is arranged on the marginal portion, hole of portal, described hole
Door hole of filling in barn is arranged in portal ring beam, and the fill in barn entrance point in hole of described portal is positioned at the outer top of portal, and its port of export is positioned at
In hole, before rectangular shield top pick machine originates, the leading section of described rectangular shield top pick machine is placed in portal, described rectangular shield
Top pick machine housing closely cooperate with portal sealing device, make described rectangular shield top dig machine housing and surrounding formation between with
And excavation face and soil storehouse between space formed opposing seal state, by portal fill in barn hole inject clay fill described sky
Gap and set up soil pressure.
Sand-pebble layer rectangular shield top digging pressure balanced of the present invention sets up construction method, and it is filled out at described portal
Storehouse is provided with intrusion pipe in hole, injects clay by described intrusion pipe, fill in barn between hole at described intrusion pipe and portal in hole
Annular space in be filled with sealing member and block.
Sand-pebble layer rectangular shield top digging pressure balanced of the present invention sets up construction method, and its described portal seals
Device includes that pre-embedded steel slab, rubber slab and pressing plate, described pre-embedded steel slab are arranged in portal ring beam, and some blocks of rubber slabs are along hole
Mouth edge is arranged and is constituted cord fabric type structure, and the outer end of each rubber slab is connected fixing by pressing plate with pre-embedded steel slab, described rubber
The inner end of offset plate extends to inner side, and the opening size that described some blocks of rubber slabs are formed, less than the dimension of opening of portal, works as institute
Stating the leading section of rectangular shield top pick machine when being placed in portal, the inner end of described rubber slab digs machine operation side along rectangular shield top
To bending, and cooperatively form sealing with the housing of rectangular shield top pick machine.
Sand-pebble layer rectangular shield top digging pressure balanced of the present invention sets up construction method, and it is on described pressing plate
Being provided with folding paper sealing clamp, described folding paper sealing clamp includes the fixed plate being fixedly connected on pressing plate and with fixing
The turnover panel that plate is hinged, described turnover panel is positioned at the rubber slab lateral surface to extension, inner side, when before described rectangular shield top pick machine
When end is placed in portal, described turnover panel is along rectangular shield top pick machine traffic direction bending, and is pushed down by the rubber slab of bending, with
Without turning up when making the rubber slab outer flowing pressure of clay in by hole.
The present invention is directed to the sand-pebble layer structure under particular condition, before rectangular shield top pick machine originates and in driving,
The clay of preparation is injected on stratum around rectangular shield top pick machine shield shell and tube coupling, fills the stratum produced in tunneling process empty
Gap, thus maintain the earth pressure balance in tunneling process, to reduce the possibility of roadbed subsidence, it is ensured that the safety of construction.
The invention has the beneficial effects 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 produced in tunneling process, it is possible to effectively control surface subsidence, it is to avoid occur ground collapse,
Depression.
If in 3 tunneling processes, shield top pick machine attitude generation relatively large deviation, can rectify a deviation by injecting clay.
Accompanying drawing explanation
Fig. 1 be the present invention is arranged at portal originate before earth pressure balance set up the structural representation of system.
Fig. 2 is to originate front earth pressure balance to set up the structural representation of portal sealing device in system.
Labelling in figure: 1 is portal sealing device, 2 fill in barn hole for portal, and 3 is portal, and 4 is portal ring beam, and 5 is pre-buried steel
Plate, 6 is rubber slab, and 7 is pressing plate, and 8 is fixed plate, and 9 is turnover panel.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and embodiment, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Embodiment: a kind of sand-pebble layer rectangular shield top digging pressure balanced sets up construction method, comprises the following steps:
A), for the analysis of the sand-pebble layer soil body, described sand-pebble layer includes boulder bed and sandy soils, described boulder bed
In the soil body, the cobble content of the closeest boulder bed is 55%～60%, and particle diameter 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
The cobble content of boulder bed is 60%～70%, and particle diameter is 4 mm～5mm, and natural density γ is 21.0 kN/m3, deformation modulus Eo
Being 30～36 Mpa, internal friction angle Φ is 40 °～45 °, characteristic load bearing capacity fakIt is 500～560 kPa；The ovum of closely knit boulder bed
Stone content is more than 70%, and particle diameter is 5 mm～8mm, and natural density γ is 22.0 kN/m3, deformation modulus Eo is 42～50 Mpa,
Internal friction angle Φ is 42 °～47 °, characteristic load bearing capacity fakIt is 800～880 kPa；In the soil body of described sandy soils, fine sand layer
Thickness is 1.5m～2.7m, and natural density γ is 18.5 kN/m3, deformation modulus Eo is 6～9 Mpa, and internal friction angle Φ is 18 °
～23 °, characteristic load bearing capacity fakIt is 90～100 kPa；The thickness of middle layer of sand is 0.8m～1.1m, and natural density γ is 19.0
kN/m3, deformation modulus Eo is 7～10 Mpa, and internal friction angle Φ is 19 °～24 °, characteristic load bearing capacity fakIt is 110～120
KPa, described fine sand layer and middle layer of sand are formed by the hard particles of Anhydrite, quartz and sandstone.
B), for the peculiar composition structure of above-mentioned sand-pebble layer, preparing clay, described clay is by calcium-base bentonite, poly-
Acrylamide and water composition, wherein the mass percent of calcium-base bentonite is 60%～65%, the percent mass of polyacrylamide
Ratio is 0.3%～0.6%, and remaining is water.In the present embodiment, the preparation of described clay uses mass percent to be the calcio of 62%
Bentonite and mass percent are the polyacrylamide of 0.4%, and remaining is water.
C), in rectangular shield top pick machine tunneling process, the clay of above-mentioned preparation is by reserved putting on concrete tube coupling
Change injected hole and shield top pick machine shield shell on preformed hole inject stratum, the scope of injection include shield top pick machine self and
Rear concrete tube coupling, pick machine in shield top is injected by the preformed hole in anterior shield and shield roof portion, and rear concrete tube coupling is by putting
Changing injected hole to inject, described clay, according to soil pressure sensor and roadbed subsidence situation, determines injection phase and injection rate.Example
As, in rectangular shield top pick machine tunneling process, depression several centimeters somewhere, just local inject clay to corresponding, sink
The place fallen into just can be recovered.
In described step c), head in stratum by pipe bending cylinder by being positioned over the concrete tube coupling originated on frame,
On described concrete tube coupling, being radially provided with multiple replacement grouting hole, the plurality of replacement grouting hole is along concrete tube coupling
Circumference is distributed at a certain distance, and the medial and lateral anchor ring of concrete tube coupling, the plurality of replacement grouting are run through in described replacement grouting hole
Hole is arranged on the axial medium position of corresponding concrete tube coupling, and during described concrete tube coupling is headed into, described clay leads to
The pipeline that the clay warp of above-mentioned preparation is connected with replacement grouting hole is injected into concrete tube coupling periphery by the soil pump of beating crossed in passage
Stratum.
Wherein, after new concrete tube coupling assembly completes, before normal driving starts, if soil pressure force value cannot reach
To the requirement of normal driving, then need to inject to corresponding position clay from the anterior shield preformed hole of shield top pick machine, at driving
During often go out primary slag, observe whether soil pressure force value reaches the condition of earth pressure balance, then decide whether to inject clay, note every time
Entering the numerical value decision that clay amount is shown by soil pressure case, injecting clay until reaching the condition of earth pressure balance.
As it is shown in figure 1, before described rectangular shield top pick machine originates, be provided with earth pressure balance before originating at portal and set up system
System, described in originate front earth pressure balance and set up system and include that portal sealing device 1 and portal are filled in barn hole 2, described portal sealing device 1
Being arranged on the marginal portion, hole of portal 3, described portal hole 2 of filling in barn is arranged in portal ring beam 4, and described portal is filled in barn hole 2
Entrance point be positioned at the outer top of portal 3, its port of export is positioned at hole, and the fill in barn aperture in hole of described portal is Φ 110mm, described
Portal is filled in barn the intrusion pipe of the Φ 60mm being provided with outside band valve in hole 2, and described intrusion pipe stretches in hole from outer skew back, length
It is about 3m, in the annular space between hole 2 filled in barn by described intrusion pipe and portal, is filled with sealing member blocks, on rectangular shield top
Before pick machine originates, shield top pick equipment debugging completes, after no-load running is normal, left away from face 10cm in equipment advances portal
The right side, the leading section of the most described rectangular shield top pick machine is placed in portal 3, and the housing of described rectangular shield top pick machine seals with portal
Device 1 closely cooperates, make described rectangular shield top pick machine housing and surrounding formation between and excavation face with soil storehouse it
Between space form opposing seal state, in hole, inject clay, to fill by the portal intrusion pipe arranged in hole 2 of filling in barn
State space and set up soil pressure.
As in figure 2 it is shown, described portal sealing device 1 includes pre-embedded steel slab 5, rubber slab 6 and pressing plate 7, described pre-buried steel
Plate 5 is arranged in portal ring beam 4, and some blocks of rubber slabs 6 are arranged along edge, hole and constituted cord fabric type structure, each rubber slab 6
Outer end is connected fixing by pressing plate 7 with pre-embedded steel slab 5, and the inner end of described rubber slab 6 extends to inner side, described some pieces of rubbers
The opening size that offset plate 6 is formed is less than the dimension of opening of portal 3, when the leading section of described rectangular shield top pick machine is placed in portal 3
Time interior, the inner end of described rubber slab 6 is along rectangular shield top pick machine traffic direction bending, and digs the housing of machine with rectangular shield top
Cooperatively form sealing.
Wherein, being provided with folding paper sealing clamp on described pressing plate 7, described folding paper sealing clamp includes fixing connection
Fixed plate 8 on pressing plate 7 and the turnover panel 9 hinged with fixed plate 8, described turnover panel 9 is positioned at rubber slab 6 to extension, inner side
Lateral surface, when the leading section of described rectangular shield top pick machine is placed in portal 3, described turnover panel 9 is along rectangular shield top pick machine fortune
Line direction bends, and is pushed down by the rubber slab 6 of bending, to prevent rubber slab from turning up during clay pressure in by hole, and goes out
The phenomenon of existing clay outflow.
Before rectangular shield top pick machine originates, being injected by hole of filling in barn by clay of filling in barn good for mixing, clay fills top pick
The space between space and excavation face and soil storehouse between casing body and surrounding formation, observes the top each site pressure of pick machine
When the numerical value that sensor shows reaches requirement, illustrate that the earth pressure balance before originating is set up complete, can formally tunnel.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (7)
1. digging pressure balanced in sand-pebble layer rectangular shield top sets up construction method, it is characterised in that: comprise the following steps:
A), for the analysis of the sand-pebble layer soil body, described sand-pebble layer includes boulder bed and sandy soils, described boulder bed
In the soil body, the cobble content of the closeest boulder bed is 55%～60%, and particle diameter is 3 mm～5mm, in the cobble content of close boulder bed be
60%～70%, particle diameter is 4 mm～5mm, and the cobble content of closely knit boulder bed is more than 70%, and particle diameter is 5 mm～8mm；Described 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, described fine sand layer and medium sand
Layer is formed by the hard particles of Anhydrite, quartz and sandstone；
B), for the peculiar composition structure of above-mentioned sand-pebble layer, preparing clay, described clay is by calcium-base bentonite, polypropylene
Amide and water composition, wherein the mass percent of calcium-base bentonite is 60%～65%, and the mass percent of polyacrylamide is
0.3%～0.6%, remaining is water；
C), in rectangular shield top pick machine tunneling process, the clay of above-mentioned preparation is noted by displacement reserved on concrete tube coupling
Preformed hole on slurry hole and shield top pick machine shield shell injects stratum, and the scope of injection includes shield top pick machine self and rear thereof
Concrete tube coupling, pick machine in shield top is injected by the preformed hole in anterior shield and shield roof portion, and rear concrete tube coupling is noted by displacement
Slurry hole is injected, and described clay, according to soil pressure sensor and roadbed subsidence situation, determines injection phase and injection rate.
Sand-pebble layer rectangular shield top digging pressure balanced the most according to claim 1 sets up construction method, and its feature exists
In: in described step c), head in stratum by pipe bending cylinder by being positioned over the concrete tube coupling originated on frame, described mixed
On solidifying soil tube coupling, being radially provided with multiple replacement grouting hole, the plurality of replacement grouting hole is pressed along concrete tube coupling circumference
One determining deviation distribution, described replacement grouting hole is run through the medial and lateral anchor ring of concrete tube coupling, is headed at described concrete tube coupling
During, the pipeline that the clay warp of above-mentioned preparation is connected with replacement grouting hole is injected by described clay by the soil pump of beating in passage
Stratum to concrete tube coupling periphery.
Sand-pebble layer rectangular shield top digging pressure balanced the most according to claim 2 sets up construction method, and its feature exists
In: after new concrete tube coupling assembly completes, before normal driving starts, if soil pressure force value is unable to reach normal driving
Requirement, then need from shield top pick machine anterior shield preformed hole to corresponding position inject clay, often go out in tunneling process
Primary slag, observes whether soil pressure force value reaches the condition of earth pressure balance, then decides whether to inject clay, inject every time clay amount by
The numerical value that soil pressure case shows determines, injects clay until reaching the condition of earth pressure balance.
Sand-pebble layer rectangular shield top digging pressure balanced the most according to claim 3 sets up construction method, and its feature exists
Before: described rectangular shield top pick machine originates, at portal, be provided with earth pressure balance before originating set up system, described in originate front soil
Pressure balanced is set up system and is included that portal sealing device (1) and portal are filled in barn hole (2), and described portal sealing device (1) is arranged on hole
The marginal portion, hole of door (3), described portal is filled in barn in hole (2) is arranged on portal ring beam (4), and described portal is filled in barn hole (2)
Entrance point be positioned at portal (3) top outward, its port of export is positioned at hole, before in the pick of rectangular shield top, machine originates, described rectangle shield
The leading section of structure top pick machine is placed in portal (3), and the housing of described rectangular shield top pick machine is closely joined with portal sealing device (1)
Close, make the space between housing and the surrounding formation of described rectangular shield top pick machine and between excavation face and soil storehouse be formed
Opposing seal state, by portal fill in barn hole (2) inject clay fill described space and set up soil pressure.
Sand-pebble layer rectangular shield top digging pressure balanced the most according to claim 4 sets up construction method, and its feature exists
In: in described portal fills in barn hole (2), it is provided with intrusion pipe, in hole, injects clay by described intrusion pipe, in described perfusion
Pipe and portal are filled in barn and are filled with sealing member in the annular space between hole (2) and block.
6. set up construction method according to the sand-pebble layer rectangular shield top digging pressure balanced described in claim 4 or 5, its feature
It is: described portal sealing device (1) includes pre-embedded steel slab (5), rubber slab (6) and pressing plate (7), described pre-embedded steel slab (5)
Being arranged in portal ring beam (4), some pieces of rubber slabs (6) are arranged along edge, hole and are constituted cord fabric type structure, each rubber slab (6)
Outer end by pressing plate (7) is connected with pre-embedded steel slab (5) fix, the inner end of described rubber slab (6) to inner side extension, described
The opening size that some pieces of rubber slabs (6) are formed is less than the dimension of opening of portal (3), when the front end of described rectangular shield top pick machine
Portion be placed in portal (3) interior time, the inner end of described rubber slab (6) is along rectangular shield top pick machine traffic direction bending, and and rectangle
The housing of shield top pick machine cooperatively forms sealing.
Sand-pebble layer rectangular shield top digging pressure balanced the most according to claim 6 sets up construction method, and its feature exists
In: being provided with folding paper sealing clamp on described pressing plate (7), described folding paper sealing clamp includes being fixedly connected on pressing plate
(7) fixed plate (8) on and the turnover panel (9) hinged with fixed plate (8), described turnover panel (9) is positioned at rubber slab (6) and prolongs to inner side
The lateral surface of the section of stretching, when the leading section of described rectangular shield top pick machine is placed in portal (3), described turnover panel (9) is along rectangle shield
Structure top pick machine traffic direction bending, and the rubber slab (6) of bending is pushed down, so that rubber slab (6) clay in by hole outflows
Without turning up during 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 true CN106285696A (en) | 2017-01-04 |
| CN106285696B 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 |
|---|---|
| CN (1) | CN106285696B (en) |
Cited By (2)
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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 |
| CN110219658A (en) * | 2019-07-25 | 2019-09-10 | 中建八局轨道交通建设有限公司 | Prevent shield machine from planting the device and its application method of head |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110219658A (en) * | 2019-07-25 | 2019-09-10 | 中建八局轨道交通建设有限公司 | Prevent shield machine from planting the device and its application method of head |
| 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 |
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| CN106285696B (en) | 2018-07-13 |
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