CN108343035A - River construction method is worn under shallow tunnel - Google Patents
River construction method is worn under shallow tunnel Download PDFInfo
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- CN108343035A CN108343035A CN201810143144.0A CN201810143144A CN108343035A CN 108343035 A CN108343035 A CN 108343035A CN 201810143144 A CN201810143144 A CN 201810143144A CN 108343035 A CN108343035 A CN 108343035A
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- river
- foundation pit
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- excavation
- arch
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- 238000010276 construction Methods 0.000 title claims abstract description 43
- 238000009412 basement excavation Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 32
- 239000002689 soil Substances 0.000 claims description 15
- 239000004567 concrete Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 3
- 241000968069 Asterolecaniidae Species 0.000 abstract description 4
- 239000004575 stone Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The present invention provides river construction method is worn under a kind of shallow tunnel, include the following steps：Water cut dam is applied in the upstream in the river, and waterwall is applied in the downstream in the river, to determine the river that shuts off；The excavation pit at the river that shuts off；Steel tube shed is applied respectively in the both sides foundation pit walls in the tunnel size mileage direction of the foundation pit；Shield arch is applied in the foundation pit；Backfill the foundation pit；Aqueduct is built above the foundation pit；Restore the flowing water in the river；And the tunnel of constructing below the river.The construction method provided through the invention reduces excavation of foundation pit scale, shortens construction period, has effectively evaded security risk, and reduce operating expenses.
Description
Technical field
The present invention relates to Municipal Engineering Construction fields, and in particular, to wears river under a kind of shallow tunnel in constructing tunnel
Flow construction method.
Background technology
The case where wearing river under inevitably being encountered in constructing tunnel, the tunnel rivers Xia Chuan belong to high risk operation,
The operation in river is especially worn under shallow tunnel.
In the prior art, full open-cut scheme is used when wearing river under shallow tunnel, i.e., is excavated downwards from ground slope
Until tunnel bottom, tunnel structure is applied by open cut tunnel.But open-cut foundation ditch depth is deeper entirely, section excavation is very big, and tunnel is applied
Work quantities is huge, and construction period is very long, and the so huge deep foundation pit construction risk of scale itself is very high, if encountering rainy season,
Draining is not in time, it is likely that foundation pit is flooded by rainwater, and such security risk can higher.
Invention content
For wearing huge river construction method construction work amount, long construction period, safety under shallow tunnel in the prior art
The high technical problem of risk can be reduced the present invention provides river construction method is worn under a kind of shallow tunnel using this method
Excavation of foundation pit scale shortens construction period, effectively evades security risk.
To achieve the above object, river construction method is worn under shallow tunnel provided by the invention to include the following steps：Institute
The upstream for stating river applies water cut dam, and applies waterwall in the downstream in the river, to determine the river that shuts off；At described section
Excavation pit at fluid stream channel；Steel tube shed is applied respectively in the both sides foundation pit walls in the tunnel size mileage direction of the foundation pit；
Shield arch is applied in the foundation pit；Backfill the foundation pit；Aqueduct is built above the foundation pit；Restore the flowing water in the river；With
And the tunnel of constructing below the river.
Preferably, described to build aqueduct above the foundation pit, including：The flowing water side in river described in the aqueduct bottom
To both sides apply ear wall respectively.
Preferably, the base length in the tunnel size mileage direction of the foundation pit is more than the river width in the river.
Preferably, the construction tunnel below the river, including：Top bar is excavated, until forming predetermined length
Top bar；The side of step in excavation, and preliminary bracing is applied while excavating, after the excavation for completing the side,
The other side of step in excavation, and the preliminary bracing is applied while excavating, until forming the middle step of predetermined length；It opens
The side of step is dug down, and the preliminary bracing is applied while excavating, after the excavation for completing the side, under excavation
The other side of step, and the preliminary bracing is applied while excavating, until forming getting out of a predicament or an embarrassing situation for predetermined length；Excavation is faced upward
Arch, and the preliminary bracing is applied while excavating, until completing the excavation of inverted arch；Sandwich concrete is carried out to the inverted arch
It pours with inverted arch described in one-pass molding；And secondary lining is carried out to the tunnel.
Preferably, the method further includes：Top bar arc soil tire is reserved when excavating the foundation pit.
Preferably, the method further includes：The top bar arc soil tire is modified smoother；
The shield that applied in the foundation pit is encircleed, including：The shield arch is applied on the top bar arc soil tire.
Preferably, the method further includes：Construction time section is selected according to the flow in the river.
Preferably, the method further includes：It is pre-buried while applying the water cut dam and the waterwall to be used for river
Drainpipe of the water from upstream ejectment to downstream.
The technical solution provided through the invention, the present invention at least have the following technical effect that：
Method of the river construction method using half open cut, the river that will first be worn under tunnel are worn under the shallow tunnel of the present invention
Road part retains, and the excavation pit at the river that shuts off, and builds shield arch, backfills foundation pit after shield arch is built and finished, and in base
Aqueduct is applied in hole, then restores river flowing water, and the tunneling under the protection of aqueduct.Excavation of foundation pit scale is reduced, is contracted
Short construction period, has effectively evaded security risk, and reduce operating expenses.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Fig. 1 is the flow chart that river construction method is worn under shallow tunnel provided by the invention；
Fig. 2 (a) is the side view that aqueduct in river construction method is worn under shallow tunnel provided in an embodiment of the present invention；
Fig. 2 (b) is the cross-sectional view that aqueduct in river construction method is worn under shallow tunnel provided in an embodiment of the present invention；
Fig. 3 (a) is the side view that aqueduct in river construction method is worn under shallow tunnel provided in an embodiment of the present invention；And
Fig. 3 (b) is the cross-sectional view that aqueduct in river construction method is worn under shallow tunnel provided in an embodiment of the present invention.
Reference sign
1 aqueduct, 11 side wall
12 aqueduct bottom, 13 ear wall
Specific implementation mode
The specific implementation mode of the embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this
The described specific implementation mode in place is merely to illustrate and explain the present invention embodiment, is not intended to restrict the invention embodiment.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is typically needle
For direction shown in the drawings either for it is vertical, on vertical or gravity direction for each component mutual alignment relation
Word is described.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to FIG. 1, wearing river construction method under a kind of shallow tunnel of offer of the embodiment of the present invention, this method includes following
Step：S101:Water cut dam is applied in the upstream in the river, and waterwall is applied in the downstream in the river, is cut with determining
Fluid stream channel；S102:The excavation pit at the river that shuts off；S103:Both sides in the tunnel size mileage direction of the foundation pit
Steel tube shed is applied in foundation pit walls respectively；S104:Shield arch is applied in the foundation pit；S105:Backfill the foundation pit；S106:Institute
It states and builds aqueduct above foundation pit；S107:Restore the flowing water in the river；And S108:Described in constructing below the river
Tunnel.
In the embodiment of the present invention, before tunnel excavation, one of intensity etc. is applied in the river upstream away from tunnel center line 50m
For grade M10 mortar flag stones water cut dam to block flowing water, the dam body of water cut dam gos deep into riverbed bottom 100cm, dam body bottom width 150cm, top width
100cm, high 300cm；Simultaneously one of strength grade M10 mortar flag stone waterwall is applied in the river downstream away from tunnel center line 30m
To prevent river water from flowing backwards, the wall of waterwall gos deep into riverbed bottom 0.5m, dam body wide 50cm, high 150cm.
After the river drainage that shuts off between water cut dam and waterwall, with 1 at the river that shuts off:0.75 gradient is downward
Lead that arch springing absolute altitude is identical on excavation pit, foundation pit bottom absolute altitude and tunnel, length and tunnel of the foundation pit bottom in Vertical tunnel axis direction
Road is of same size.Excavation of foundation pit in place after, with Bolt net and jet concrete enclosing excavation face.In the tunnel both sides foundation pit walls of foundation pit to
Tunnel size mileage direction respectively applies one group of caliberThe steel tube shed of wall thickness 6mm, pipe canopy length L=10m, circumferential spacing
40cm, cementing-waterglass dual slurry in pipe canopy.
After steel tube shed erection finishes, shield arch is applied in foundation pit：Model I22 shaped steel arch is led on being laid in foundation pit
Frame, arch spacing 50cm, arch springing adapter plate are wrapped up with sandbag, and arch is with a diameter ofBar connecting, use are a diameter of
Reinforcing bar lays two layers of 20*20cm reinforced mesh, then pours the strength grade C30 concrete that thickness is 50cm, forms shield arch.
After shield arch concrete strength reaches design, foundation pit is backfilled, layering is banketed, and compaction in layers, compactness is not less than
98%.Respectively extend 20m to tunnel center line upstream and downstream and builds aqueduct.Referring to FIG. 2, Fig. 2 (a) is provided in an embodiment of the present invention applies
The side view of aqueduct in work method, Fig. 2 (b) are the cross-sectional view of aqueduct in construction method provided in an embodiment of the present invention.It is repairing
When building aqueduct (1), the side wall (11) of the strength grade M10 mortar flag stones of aqueduct both sides 60cm thickness is first built by laying bricks or stones, then pour 20cm thickness
Strength grade C15 water-tight concretes aqueduct bottom (12).Aqueduct (1) construction, which finishes, removes water cut dam and waterwall, restores
River flowing water.Under the protection of aqueduct (1), constructing tunnel is carried out in the lower section in river.
Method through the embodiment of the present invention reduces excavation of foundation pit scale, shortens construction period, has effectively evaded peace
Full blast danger, and reduce operating expenses.
Preferably, described to build aqueduct above the foundation pit, including：The flowing water side in river described in the aqueduct bottom
To both sides apply ear wall respectively.
Referring to FIG. 3, Fig. 3 (a) is the side view of aqueduct in construction method provided in an embodiment of the present invention, Fig. 3 (b) is this
The cross-sectional view of aqueduct in the construction method that inventive embodiments provide.When building aqueduct (1), on aqueduct bottom (12) edge
The both sides of the current direction in river apply downwards ear wall (13), ear wall (13) along tunnel axis direction length and aqueduct along tunnel
The length of axis direction is identical, and the height of ear wall (13) perpendicular to the ground is 100cm, and the thickness of ear wall (13) is 80cm.
Method through the embodiment of the present invention can utilize ear wall (13) to prevent from oozing under river degradation and river water, protect
Tunnel improves the safety of constructing tunnel.
Preferably, the base length in the tunnel size mileage direction of the foundation pit is more than the river width in the river.
In the embodiment of the present invention, since after excavation pit, the sandstone on foundation pit walls or foundation pit river both sides is more loose
It dissipates, it is possible that the case where falling, it is preferable that when excavation pit, foundation pit bottom is along tunnel axis direction
Length exceeds river width 100cm.
Method through the embodiment of the present invention can fall to avoid the sandstone on river both sides and then cause shadow to shield arch construction
Ring, while the length of shield arch can be extended when shield arch applies, can preferably protection path, improve safety for tunnel engineering.
Preferably, the construction tunnel below the river, including：Top bar is excavated, until forming predetermined length
Top bar；The side of step in excavation, and preliminary bracing is applied while excavating, after the excavation for completing the side,
The other side of step in excavation, and the preliminary bracing is applied while excavating, until forming the middle step of predetermined length；It opens
The side of step is dug down, and the preliminary bracing is applied while excavating, after the excavation for completing the side, under excavation
The other side of step, and the preliminary bracing is applied while excavating, until forming getting out of a predicament or an embarrassing situation for predetermined length；Excavation is faced upward
Arch, and the preliminary bracing is applied while excavating, until completing the excavation of inverted arch；Sandwich concrete is carried out to the inverted arch
It pours with inverted arch described in one-pass molding；And secondary lining is carried out to the tunnel.
In the present invention, the tunnel in river is worn in tunnel under being excavated using three bench cut methods under the protection of steel tube shed and shield arch
Road, shield encircle while leading preliminary bracing on being also, and the soil body is led on excavation and forms top bar, top bar length is controlled in 3-5m.In under
Lead excavate vertical height be 370cm, under lead the left and right sides not only to avoid left and right to dig, also to avoid left and right and meanwhile open
Dig, middle length of bench is maintained at 3-5m, gets out of a predicament or an embarrassing situation and be maintained at 10-15m away from branch distance at the beginning of inverted arch, under lead that primary to excavate drilling depth tight
Lattice control in 1.0m/2 Pin steelframes, in lead arch and connect with the pre-buried steelframe of shield arch, excavation length of inverted arch must not exceed
200cm/4 Pin steelframes.It is led under in being applied by design requirement and inverted arch preliminary bracing.Inverted arch is constructed using self-propelled mobile trestle,
Inverted arch concrete pours once per 6m, and inverted arch arch ring and filling cover mould realization placement layer by layer using totally-enclosed inverted arch, inverted arch with it is upper
Face distance controlling is led within 30m.Two lining constructions are vibrated by window cast, layering using full-hydraulic lining trolley and pour coagulation
Soil.
According to embodiments of the present invention, it then follows construction is led under in construction principle tissue, stringent control loop drilling depth is paid special attention to
In, under lead and staggeredly construct, avoid to digging；Preliminary bracing is synchronous with excavation, closes early, makes country rock and supporting entirety stress.It applies
Length of bench, stringent control inverted arch and the safe step pitch of lining cutting are strictly controlled in work, formation process is intersected, branch is parallel, it is quick, have
The construction pattern of sequence, safety.Every operation is carried out according to safety regulation for operations.
Preferably, the method further includes：Top bar arc soil tire is reserved when excavating the foundation pit.
After steel tube shed erection finishes, shield arch is applied in foundation pit.Since shield arch is arch, so applying shield arch
When need to set up the support of arch, and apply on arch support shield arch, reach design in the intensity of the concrete of shield arch
And then remove arch support, construction procedure is cumbersome, and increases construction cost.So according to an embodiment of the invention,
When excavation pit, reserves and above led the reserved native tire of arc, and be directly laid with splash guard on reserved native tire, in waterproof
Shield arch is applied on plate.
Method through the embodiment of the present invention can further decrease the excavation workload of foundation pit, meanwhile, it has been also convenient for shield
Arch applies, and improves the supporting role to shield arch, reduces construction cost.
Preferably, the method further includes：The top bar arc soil tire is modified smoother；
The shield that applied in the foundation pit is encircleed, including：The shield arch is applied on the top bar arc soil tire.
In the present invention, when applying shield arch, will it is reserved on to lead arc soil tire manual amendment smoother, make to lead arc soil tire
Profile fits like a glove with shield arch Internal periphery, sets splash guard on upper arc soil tire upper berth of leading later, and shield arch is applied on native tire.Pass through
The method of the embodiment of the present invention can make the outer profile of arc soil tire more regular, facilitate applying for shield arch.
Preferably, the method further includes：Construction time section is selected according to the flow in the river.
Because being influenced by rainwater, river is larger in wet-weather flow, and maximum stream flow is up to 800m3/h.If in river discharge
It constructs when larger, then the river water in the river that shuts off is not easy drainage, and in excavation pit, it is likely that drainage of foundation pit is not in time by rain
Water submerged influences the safety of constructing tunnel.So in the present invention, before constructing tunnel, it is thus necessary to determine that the flow in river, selection
Constructing tunnel is carried out in the flow smaller period.
Method through the embodiment of the present invention can quickly drainage shut off the river water in river, base when avoiding river flow larger
Hole is flooded by rainwater, improves the safety of constructing tunnel.
Preferably, the method further includes：It is pre-buried while applying the water cut dam and the waterwall to be used for river
Drainpipe of the water from upstream ejectment to downstream.
In the embodiment of the present invention, while building water cut dam and waterwall by laying bricks or stones, pre-buried 6 diameters3 third polyethylene
(PPR) drainpipe, by river water from upstream ejectment to downstream.It avoids river water from flooding foundation pit, further increases the peace of constructing tunnel
Quan Xing.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (8)
1. wearing river construction method under a kind of shallow tunnel, which is characterized in that this approach includes the following steps：
Water cut dam is applied in the upstream in the river, and waterwall is applied in the downstream in the river, to determine the river that shuts off；
The excavation pit at the river that shuts off；
Steel tube shed is applied respectively in the both sides foundation pit walls in the tunnel size mileage direction of the foundation pit；
Shield arch is applied in the foundation pit；
Backfill the foundation pit；
Aqueduct is built above the foundation pit；
Restore the flowing water in the river；And
It constructs below the river tunnel.
2. according to the method described in claim 1, it is characterized in that, described build aqueduct above the foundation pit, including：
The both sides of the current direction in river described in the aqueduct bottom apply ear wall respectively.
3. according to the method described in claim 1, it is characterized in that, the base length in the tunnel size mileage direction of the foundation pit
More than the river width in the river.
4. according to the method described in claim 1, it is characterized in that, the construction tunnel below the river, including：
Top bar is excavated, until forming the top bar of predetermined length；
The side of step in excavation, and preliminary bracing is applied while excavating, after the excavation for completing the side, excavate
The other side of middle step, and the preliminary bracing is applied while excavating, until forming the middle step of predetermined length；
The side got out of a predicament or an embarrassing situation is excavated, and the preliminary bracing is applied while excavating, after the excavation for completing the side,
The other side got out of a predicament or an embarrassing situation is excavated, and the preliminary bracing is applied while excavating, until forming getting out of a predicament or an embarrassing situation for predetermined length；
Inverted arch is excavated, and the preliminary bracing is applied while excavating, until completing the excavation of inverted arch；
Sandwich concrete is carried out to the inverted arch to pour with inverted arch described in one-pass molding；And
Secondary lining is carried out to the tunnel.
5. according to the method described in claim 1, it is characterized in that, the method further includes：
Top bar arc soil tire is reserved when excavating the foundation pit.
6. according to the method described in claim 5, it is characterized in that, the method further includes：
The top bar arc soil tire is modified smoother；
The shield that applied in the foundation pit is encircleed, including：
The shield arch is applied on the top bar arc soil tire.
7. according to the method described in claim 1, it is characterized in that, the method further includes：
Construction time section is selected according to the flow in the river.
8. according to the method described in claim 1, it is characterized in that, the method further includes：
The pre-buried drainpipe for by river water from upstream ejectment to downstream while applying the water cut dam and the waterwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143144.0A CN108343035A (en) | 2018-02-11 | 2018-02-11 | River construction method is worn under shallow tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143144.0A CN108343035A (en) | 2018-02-11 | 2018-02-11 | River construction method is worn under shallow tunnel |
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| CN108343035A true CN108343035A (en) | 2018-07-31 |
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| CN201810143144.0A Pending CN108343035A (en) | 2018-02-11 | 2018-02-11 | River construction method is worn under shallow tunnel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184699A (en) * | 2018-08-20 | 2019-01-11 | 中铁六局集团有限公司 | Existing river construction is worn under open trench tunnel |
| CN110042842A (en) * | 2019-04-26 | 2019-07-23 | 中铁二十三局集团有限公司 | A kind of open cut construction method of deep foundation ditch for wearing river |
| CN110454189A (en) * | 2019-08-22 | 2019-11-15 | 中铁隧道集团三处有限公司 | A kind of river tunnel Xia Chuan construction technology |
| CN111441793A (en) * | 2020-03-23 | 2020-07-24 | 中交路桥建设有限公司 | Construction method for subway station headwall in sandy gravel stratum |
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| CN109184699A (en) * | 2018-08-20 | 2019-01-11 | 中铁六局集团有限公司 | Existing river construction is worn under open trench tunnel |
| CN109184699B (en) * | 2018-08-20 | 2020-07-10 | 中铁六局集团太原铁路建设有限公司 | Construction method for passing existing river channel under open trench tunnel |
| CN110042842A (en) * | 2019-04-26 | 2019-07-23 | 中铁二十三局集团有限公司 | A kind of open cut construction method of deep foundation ditch for wearing river |
| CN110454189A (en) * | 2019-08-22 | 2019-11-15 | 中铁隧道集团三处有限公司 | A kind of river tunnel Xia Chuan construction technology |
| CN111441793A (en) * | 2020-03-23 | 2020-07-24 | 中交路桥建设有限公司 | Construction method for subway station headwall in sandy gravel stratum |
| CN111441793B (en) * | 2020-03-23 | 2021-09-28 | 中交路桥建设有限公司 | Construction method for subway station headwall in sandy gravel stratum |
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