CN209654048U - A kind of water discharge tunnel tunnel shielding portal pre-buried structure - Google Patents
A kind of water discharge tunnel tunnel shielding portal pre-buried structure Download PDFInfo
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- CN209654048U CN209654048U CN201920390777.1U CN201920390777U CN209654048U CN 209654048 U CN209654048 U CN 209654048U CN 201920390777 U CN201920390777 U CN 201920390777U CN 209654048 U CN209654048 U CN 209654048U
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Abstract
The utility model discloses a kind of water discharge tunnel tunnel shielding portal pre-buried structures, including location hole, route hole, the hanging ring, spy ground hole being embedded on portal, route hole is embedded in portal rear wall, hanging ring is embedded in portal antetheca, portal surrounding has constructed portal periphery wall, and portal periphery wall is connected with bottom plate below, and location hole penetrates portal to hole portal rear wall from portal antetheca, and be connected to route hole one end by elbow, the other end in route hole is connected to another location hole by elbow；Ground hole is visited to be embedded on portal, on portal from top to bottom, layering be staggered pre-buried, and penetrate portal to portal rear wall from portal antetheca, shell manway end is blocked by seeping seepy material after visiting ground hole, and antetheca side outlet end is sealed by dismountable sealing device.The utility model solves and can not conveniently and efficiently find out underground water leakage scenarios before tunnel shielding portal is abolished in advance, and when tunnel shielding portal is abolished, and abolishes that intensity is big, the problem of low efficiency and safety difference.
Description
Technical field
The utility model belongs to hydraulic engineering field, is related to a kind of water discharge tunnel tunnel shielding portal pre-buried structure.
Background technique
In tunnel shield driving technique, to ensure operation safety, shield received well (or starting well) and tunnel junction
Portal again abolishes portal into hole or before appearing frequently with reinforced concrete wall (portal) temporary plugging, to shield machine.Portal is broken
Except mainly being carried out using man-hour manually hand-held pneumatic pick, drilling machine etc., operating efficiency is lower, manually cuts that intensity is higher, and the duration is longer；Operation
Face noise, dust etc. are larger, and there are more unfavorable factors for occupational health；When portal size is larger, job platform need to be set up, it is high
Also there is certain security risk in place's operation.Currently, abolishing that have the degree of automation such as rope saw higher for large-scale, hard block
Mechanical equipment can greatly reduce and reduce the investment of manpower.But it is limited by shield driving technique and received well (or to originate
Well) limitation that applies process, fail to introduce relevant automatic equipment into abolishing for tunnel shielding portal, main cause includes two sides
Face: first is that portal is underground soil-baffling structure, buried depth number meter, more than ten rice even tens of rice are differed, and portal rear wall is (close before abolishing
Tunnel side) full of banketing, higher underground soil pressure (water pressure) is born, personnel not can enter and reach, can not be by sawing of restricting
It cuts rope and passes through wall and the back side soil body, form the steric requirements of operation；Second is that shield received well (or starting well) geological conditions is not
One, the complicated multiplicity of space enrironment causes foundation pit enclosure structure, support system various informative, and portal structure form is also different, and
Portal is generally formed with the completion of foundation pit enclosure, supporting together, based on the factor of reason one, by cutting tool introduce also compared with
For difficulty.But when the foundation pit form of shield received well (or starting well), structure function and different conventional method, cutting tool
Introducing become as a kind of possibility.Such as in the shield-tunneling construction of Binhai Generator Station water discharge tunnel, siphonic water-collecting well doubles as shield received well, root
According to site condition and geological condition, siphonic water-collecting well foundation pit is that classification slope is excavated, the sequence of construction taken are as follows: siphonic water-collecting well (received well)
(shield launching synchronous averaging is simultaneously for excavation of foundation pit (starting well synchronous construction) → siphonic water-collecting well external structure and partial internal structure construction
Driving) → siphonic water-collecting well (received well) and tunnel junction portal temporary plugging → siphonic water-collecting well foundation pit backfill → shield driving to siphon
Well foundation pit nearby → siphonic water-collecting well (received well) portal abolishes → shield machine passes through portal → shield machine and reach received well → shield machine
Hang out received well → siphonic water-collecting well residue internal structure construction.Using this sequence of construction, it is two with the main distinction of Normal practice
A aspect: it first is that siphonic water-collecting well doubles as shield received well, after the completion of siphonic water-collecting well external structure and partial internal structure are constructed, then carries out
Portal temporary plugging；Second is that increasing foundation pit backfill process, portal temporary plugging must be completed before foundation pit backfill.If item can be created
The cutting tools such as rope saw are applied to portal and abolished, will play positive effect to the propulsion of engineering by part, have stronger reality meaning
Justice and value.In addition, shield machine passes through siphonic water-collecting well (received well) excavation slope and reaches received well after using aforementioned sequence of construction
Before, the original sealing system of foundation pit is just destroyed because shield machine passes through, and underground water just carries out seepage flow along shield machine driving path, if
Siphonic water-collecting well (received well) portal rear wall (close to tunnel side) backfill effect is not ideal enough, after portal is abolished, just there is underground water
The risk poured in, there are very big security risks.Risk is poured in eliminate underground water, Normal practice is when portal is abolished, in hole
Men Shangyong drilling machine drills out several level detection holes on portal, judges construction risk, but this method according to infiltration water flow artificial situation
It not only needs to call in special equipment, set up job platform, high-rise working, and increase security risk, increase human input, delay
Construction period.If, using a kind of simple method, the infiltration situation of underground water can be found out in advance when portal is abolished, have compared with
Strong security implications and application value.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of water discharge tunnel tunnel shielding portal pre-buried structure,
To solve to carry out in the prior art conveniently and efficiently find out underground water leakage scenarios, Yi Ji in advance before tunnel shielding portal is abolished
When tunnel shielding portal is abolished, abolish that intensity is big, the technical problem of low efficiency and safety difference.
In order to solve the above-mentioned technical problem, it realizes the utility model aim, adopts the following technical scheme that: a kind of water discharge tunnel
Tunnel shielding portal pre-buried structure, including location hole, route hole, the hanging ring, spy ground hole being embedded on portal, route hole is embedded in portal
Rear wall (tunnel side), hanging ring are embedded in portal antetheca (received well side), and portal surrounding has constructed portal periphery wall, portal periphery
Wall is connected with bottom plate below, and location hole penetrates portal to portal rear wall (tunnel side) from portal antetheca (received well side),
And be connected to route hole one end by elbow, the other end in route hole is connected to another location hole by elbow；It is pre-buried to visit ground hole
On portal, on portal from top to bottom, layering be staggered pre-buried, and penetrate portal to portal rear wall from portal antetheca, visit ground
Shell manway end is blocked by seeping seepy material behind hole, and antetheca side outlet end is sealed by dismountable sealing device.
Further, the infiltration seepy material is rubble, and shell manway is blocked by string bag package rubble after visiting ground hole, and
Rubble filtering layer is backfilled around shell manway end after visiting ground hole.
Further, dismountable sealing device includes flange, bolt and blind plate, before portal is stretched out in spy ground hole
Wall is connected with flange, and the blind plate is bolted on flange.
Further, the location hole, route hole are that PVC or PPR pipe are pre-buried.
Further, spy ground hole is that steel pipe is pre-buried, and the antetheca side of portal is stretched out in its outlet end.
Compared with prior art, the utility model has the following beneficial effects:
The structure is formed from portal antetheca to portal rear wall by location hole, route hole and elbow again to the company of portal antetheca
Siphunculus road, cutting rope, which pierces into this connecting pipeline and can facilitate, cuts portal, and portal is cut into several pieces, logical using loop wheel machine
It crosses the hanging ring being embedded on cutting cube to hang out cutting cube, so that tunnel shielding portal be made to abolish cost, at low cost, easy for construction, work
Industry is high-efficient, reduces and manually abolishes intensity, reduces broken block cleaning workload, reduce the occupational hazards such as noise, dust and
High-rise working risk；Before abolishing, i.e., before rope saw cuts portal, by opening the blind plate visited on ground hole being arranged on portal,
According to from the infiltration streamflow regime for visiting the outflow of ground hole, judge whether portal can be abolished, thus precognition and evaluation of subterranean water penetration
Risk reduces security risk, reduces the investment such as human resources, shortens the construction period.In short, the utility model structure is simple, apply
Work is convenient and efficient, at low cost, high-efficient and highly-safe.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Fig. 1 is the utility model structural facades figure；
Fig. 2 is A-A sectional view in the utility model Fig. 1；
Fig. 3 is B-B sectional view in the utility model Fig. 1；
Fig. 4 is Tu1Zhong thin portion area a enlarged drawing；
Fig. 5 is Tu2Zhong thin portion area b enlarged drawing；
Fig. 6 is Tu3Zhong thin portion area c enlarged drawing；
In figure: 1- portal；2- location hole；3- route hole；4- elbow；5- hanging ring；6- cutting line；7- portal periphery wall；
8- bottom plate；9- cutting rope；10- bolt；11- rubble filtering layer；12- visits ground hole；13- flange；14- blind plate；15- wraps up rubble.
Specific embodiment
Further explanation is made to the utility model with reference to the accompanying drawing, the utility model embodiment includes but is not limited to
The following example.
As shown in Figures 1 to 6, the utility model provides a kind of water discharge tunnel tunnel shielding portal pre-buried structure, including pre-buried
Location hole 2, route hole 3, hanging ring 5, spy ground hole 12 on portal 1, route hole 3 is embedded in 1 rear wall of portal (tunnel side), hanging ring
5 are embedded in 1 antetheca of portal (received well side), and 1 surrounding of portal has constructed portal periphery wall 7, portal periphery wall 7 with below
Bottom plate 8 be connected, location hole 2 penetrates portal to portal rear wall (tunnel side) from portal antetheca (received well side), and with route hole 3
One end is connected to by elbow 4, and the other end in route hole 3 is connected to another location hole 2 by elbow 4；It visits ground hole 12 and is embedded in hole
On door 1, on portal 1 from top to bottom, layering be staggered pre-buried, and penetrate portal to portal rear wall from portal antetheca, visit ground hole
Shell manway end is blocked by seeping seepy material after 12, and preferably infiltration seepy material is rubble, and shell manway passes through after visiting ground hole 12
The string bag wraps up rubble 15 and blocks, and backfills rubble filtering layer around shell manway end after visiting ground hole 12；Ground 12 antetheca side of hole is visited to go out
Mouth end is sealed by dismountable sealing device, and preferably dismountable sealing device includes flange 13, bolt 10 and blind plate 14, institute
It states the spy ground stretching of hole 12 portal antetheca to be connected with flange 13, the blind plate 14 is fixed on flange 13 by bolt 10.It is wherein fixed
Before position hole 2, route hole 3 are that PVC or PPR pipe are pre-buried, and it is pre-buried for steel pipe to visit ground hole 12, and portal 1 is stretched out in its outlet end
Wall side.
When the pre-buried structure, weight is lifted according to loop wheel machine maximum, calculates the maximum allowable size of cutting block, knot in advance
It closes portal size and cutting subregion is carried out to portal, each block that cuts must not exceed loop wheel machine maximum lifting weight；It is tied up in portal reinforcing bar
During bundle, setting-out is measured according to cutting subregion, marks position and the trend of cutting line 6；It is pre-buried fixed on cutting line 6
Position hole 2, route hole 3, and pre-buried 3 or 4 hanging rings 5, location hole 2 are (close from portal antetheca on cutting cube according to lifting requirements
Received well side) portal is penetrated to portal rear wall (close to tunnel side), location hole 2 and route hole 3 are connected to by elbow 4, using D50
The pvc pipe of diameter or PPR pipe etc. be used as location hole 2, route hole 3, the pre-buried pipeline of elbow 4, using 14 steel bar meter of ￠ it is good after conduct
Pre-buried hanging ring 5.Using diameter D100 and the steel pipe with flange 13 is pre-buried in advance as ground hole 12 is visited, and it is pre- on portal to visit ground hole 12
Bury principle be from top to bottom, layering be staggered, using the string bag package rubble 15 will visit ground hole 12 after shell manway block.In pre-buried mistake
Cheng Zhong, pre-buried pipeline and pre-buried hanging ring and reinforcing bar are bound the positioning that pre-buried pipeline is securely checked during template support and
Trend.
After portal demoulding, when foundation pit has backfill condition, in the 5m width range of portal two sides, along canal axes 5m length model
In enclosing, back-filling in layers cement volume is the soil cement of 15% ratio, when being backfilled to spy ground 12 entrance of hole, starts to backfill
Rubble filtering layer is advisable with wrapping to visit ground hole entrance and other backfill material has been prevented to be mixed into, is then further continued for backfill soil cement point
After layer is densified to 1 river rising in Ningxia and flowing into central Shaanxi Bei Dong absolute altitude of hole top top, finally using mountain skin earthen backfill to foundation pit top.In backfilling process, it should prevent
The miscellaneous hard block of backfill equipment, backfill feed collet touches pre-buried pvc pipe (or PPR pipe), in order to avoid cause tubing damaged.Work as shield
Machine passes through siphonic water-collecting well (received well) foundation pit, before soon reaching portal 1, opens blind plate 14, the infiltration flowed out according to from visiting hole 12
Streamflow regime, judges whether portal can be abolished, and if amount of seepage is excessive, need to take corresponding measure (second pulp feeding etc.)；Such as nothing
Water or amount of seepage very little are permeated, cutting is carried out to portal using rope saw and is abolished, before formal cutting, is guided using thin wire, it will
Cutting rope 9 is directed across location hole 2 and route hole 3；After rope saw and ready cutting rope 9 etc., according to the positioning of location hole 2 and
The trend of route hole 3 cuts portal, logical using loop wheel machine after the completion of each side of each monolith (three or four edges) is cut
The hanging ring 5 being embedded on cutting cube is crossed to hang out its entirety.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (5)
1. a kind of water discharge tunnel tunnel shielding portal pre-buried structure, including be embedded on portal (1) location hole (2), route hole (3),
Hanging ring (5) visits ground hole (12), and route hole (3) are embedded in portal (1) rear wall, and hanging ring (5) is embedded in portal (1) antetheca, portal
(1) surrounding has constructed portal periphery wall (7), and portal periphery wall (7) is connected with bottom plate (8) below, it is characterised in that:
Location hole (2) penetrates portal to hole portal rear wall from portal antetheca, and is connected to route hole (3) one end by elbow (4), route
The other end in hole (3) is connected to another location hole (2) by elbow (4)；
Ground hole (12) is visited to be embedded on portal (1), on portal (1) from top to bottom, layering be staggered it is pre-buried, and from portal antetheca
Portal is penetrated to portal rear wall, visiting ground hole (12), shell manway end is blocked by seeping seepy material afterwards, and antetheca side outlet end is logical
Cross dismountable sealing device sealing.
2. a kind of water discharge tunnel tunnel shielding portal pre-buried structure according to claim 1, it is characterised in that: the infiltration pervious material
Material is rubble, and visiting ground hole (12), shell manway is blocked by string bag package rubble (15) afterwards, and is entered visiting ground hole (12) rear wall side
Mouth backfills rubble filtering layer around end.
3. a kind of water discharge tunnel tunnel shielding portal pre-buried structure according to claim 1, it is characterised in that: described dismountable
Sealing device includes flange (13), bolt (10) and blind plate (14), and the spy ground hole (12) stretches out portal antetheca and flange (13)
It is connected, the blind plate (14) is fixed on flange (13) by bolt (10).
4. a kind of water discharge tunnel tunnel shielding portal pre-buried structure according to claim 1, it is characterised in that: the location hole
(2), route hole (3) are that PVC or PPR pipe are pre-buried.
5. a kind of water discharge tunnel tunnel shielding portal pre-buried structure according to claim 1, it is characterised in that: spy ground hole
(12) pre-buried for steel pipe, and the antetheca side of portal (1) is stretched out in its outlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390777.1U CN209654048U (en) | 2019-03-26 | 2019-03-26 | A kind of water discharge tunnel tunnel shielding portal pre-buried structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390777.1U CN209654048U (en) | 2019-03-26 | 2019-03-26 | A kind of water discharge tunnel tunnel shielding portal pre-buried structure |
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| CN209654048U true CN209654048U (en) | 2019-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826643A (en) * | 2019-03-26 | 2019-05-31 | 江苏建筑职业技术学院 | A kind of water discharge tunnel tunnel shielding portal pre-buried structure |
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2019
- 2019-03-26 CN CN201920390777.1U patent/CN209654048U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826643A (en) * | 2019-03-26 | 2019-05-31 | 江苏建筑职业技术学院 | A kind of water discharge tunnel tunnel shielding portal pre-buried structure |
| CN109826643B (en) * | 2019-03-26 | 2024-02-09 | 江苏建筑职业技术学院 | Pre-buried structure of drainage tunnel shield tunnel portal |
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