CN214660179U - Shield mine combined construction method submarine tunnel miniature dismantling machine cavern - Google Patents
Shield mine combined construction method submarine tunnel miniature dismantling machine cavern Download PDFInfo
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- CN214660179U CN214660179U CN202120404398.0U CN202120404398U CN214660179U CN 214660179 U CN214660179 U CN 214660179U CN 202120404398 U CN202120404398 U CN 202120404398U CN 214660179 U CN214660179 U CN 214660179U
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
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- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 27
- 210000001503 joint Anatomy 0.000 abstract description 15
- 239000011435 rock Substances 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 230000005641 tunneling Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- 238000009423 ventilation Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Abstract
The utility model provides a shield mine combined construction method submarine tunnel miniature dismantling machine cavern, wherein a secondary lining structure is arranged at the inner side of a primary support structure of the miniature dismantling machine cavern, and a miniature dismantling machine cavern cavity is formed inside the secondary lining structure; the end part of the secondary lining structure extends inwards towards the cavity of the miniature dismantling machine tunnel chamber to form a tunnel portal structure, and the clearance diameter in the tunnel portal structure is 0.15m larger than the diameter of the shield cutter head; waterproof curtain cloth and a portal steel ring are embedded along the whole ring of the portal structure; a plain concrete blocking wall is arranged at the end part of the tunnel door structure; one side of the mold building lining in the shield body is fixedly connected with the secondary lining structure, and the other side of the mold building lining in the shield body is fixedly connected with the shield segment. Through setting up the utility model discloses, can accomplish submarine shield and construct equipment and receive, disassemble and make up worker's method submarine tunnel worker's butt joint, improve the flexibility that submarine tunnel worker's method selected, and the work efficiency of construction is high, the civil engineering small investment.
Description
Technical Field
The utility model belongs to tunnel and underground works field, in particular to shield constructs miniature quick-witted cavern of tearing open of mine combination worker method submarine tunnel.
Background
With the vigorous development of urban rail transit construction in China, underwater rail transit tunnels are emerging continuously. At present, an underwater tunnel is mainly constructed by a shield method, a mine method and a immersed tube method, and the construction methods have different technical advantages and different limiting factors and are respectively suitable for different construction conditions. When the construction conditions of the underwater tunnel are complex and the geological conditions of the tunnel site area are greatly different, the construction by adopting a single construction method has no technical advantages in the aspects of project investment, construction period, engineering risk and the like. For tunnel engineering under complex conditions, multiple construction methods are selected for combined construction, the technical advantages of the construction methods are fully exerted, the advantages and the disadvantages are exploited, and the engineering construction is safely and efficiently completed.
The shield method tunnel carries out construction operation under the protection of the shield body, has high safety and is suitable for the construction of weak strata. However, the construction of the hard rock stratum by adopting the shield method has certain limitations, and the problems of low construction efficiency, serious cutter abrasion and the like are prominent. The mine method tunnel construction is flexible, the technical experience is mature, the technical advantages in the hard rock tunnel construction are obvious, but when the mine method tunnel construction is applied to the construction of soft strata, the pre-reinforcement treatment of the strata is required, the reinforcement cost is high, and the tunnel construction efficiency is low. When a deep-buried submarine tunnel penetrates through a hard rock stratum and a water-rich weak stratum in a long distance, a mining method is often adopted to deal with the hard rock stratum, and a shield method is selected to solve the construction problem of the weak stratum.
For a submarine tunnel deeply buried in a complex stratum, a mine shield combined construction method is adopted as an optimal scheme, but the construction method butt joint at a construction interface is still a serious problem in the construction process, and similar engineering experience is deficient. The tunnel constructed by the shield method also needs to solve the problems of starting, receiving and disassembling of shield equipment. In the prior art, a working well is usually arranged at a shield tunneling terminal to receive and disassemble shield equipment. The submarine tunnel is laid underwater and is limited by environmental conditions, and a shield submarine tunneling terminal point often cannot be provided with a working well like a land tunnel, so that the shield construction method is limited in use; even if the environmental conditions allow the setting of a working well, high construction costs are still required to be paid, and huge construction risks are borne. How to properly solve the key technical problems which are urgently needed to be solved in the design and construction of the underwater tunnel, namely the butt joint of the submarine tunnel in the combined construction method and the receiving and the disassembly of the shield equipment.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned technical problem, the utility model provides a shield constructs miniature unpicking machine cavern of mine combination worker method submarine tunnel, can't set up in the sea area shield construction under the working condition of well, through setting up miniature unpicking machine cavern can high-efficiently accomplish submarine shield and receive, disassemble and submarine tunnel worker method butt joint, improved the flexibility that submarine tunnel worker method selected, and the work efficiency of construction is high, the civil engineering is with little investment.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a shield mine combined construction method submarine tunnel miniature dismantling machine cavern, which comprises a primary support structure, a secondary lining structure, a portal structure, waterproof curtain cloth and portal steel rings; the secondary lining structure is arranged on the inner side of the primary support structure, and a miniature dismantling machine cavern cavity is formed inside the secondary lining structure; the end part of the secondary lining structure extends inwards towards the cavity of the miniature dismantling machine tunnel chamber to form the tunnel portal structure, and the clearance diameter in the tunnel portal structure is 0.15m larger than the diameter of the shield cutter head; the waterproof curtain cloth and the portal steel ring are embedded along the whole ring of the portal structure; a plain concrete blocking wall is arranged at the end part of the tunnel door structure; one side of the mold building lining in the shield body is fixedly connected with the secondary lining structure, and the other side of the mold building lining in the shield body is fixedly connected with the shield segment.
Preferably, the arch part of the secondary lining structure is provided with a plurality of embedded lifting hooks which are used as hoisting points of the shield dismantling machine.
Preferably, the outer side of the molded lining in the shield body is provided with the shield body, an intermediate layer is laid between the molded lining in the shield body and the shield body, and the intermediate layer consists of a deformation buffer layer and a waterproof coiled material.
Preferably, reinforcing steel bar connectors are embedded in the whole ring of the portal structure, and the circumferential distance between the reinforcing steel bar connectors is 0.2 m; and the molded lining in the shield body is fixedly connected with the secondary lining structure through the reinforcing steel bar connector.
Preferably, the molded lining in the shield body is fixedly connected with shield segments through segment bolts.
The utility model discloses following beneficial effect has:
the utility model provides a shield mine combined construction method submarine tunnel miniature dismantling machine cavern, which comprises a primary support structure, a secondary lining structure, waterproof curtain cloth, a portal steel ring and a portal structure which can lead a shield cutter head to enter; the secondary lining structure is arranged on the inner side of the primary support structure, and a miniature dismantling machine cavern cavity is formed inside the secondary lining structure; the end part of the secondary lining structure extends inwards towards the cavity of the miniature dismantling machine tunnel chamber to form the tunnel portal structure, and the clearance diameter in the tunnel portal structure is 0.15m larger than the diameter of the shield cutter head; the waterproof curtain cloth and the portal steel ring are embedded along the whole ring of the portal structure; a plain concrete blocking wall is arranged at the end part of the tunnel door structure; and (2) after the shield equipment breaks the plain concrete blocking wall, the shield cutter head is completely exposed out of the miniature dismantling machine cavern, the shield equipment is sequentially dismantled, finally, a lining structure is molded on the inner side of the shield body to form an in-shield-body molded lining, one side of the in-shield-body molded lining is fixedly connected with the secondary lining structure, the other side of the in-shield-body molded lining is fixedly connected with shield segments, and the mine tunnel and the shield tunnel are connected into an integral structure.
Through setting up miniature quick-witted cavern of tearing open can accomplish the submarine shield and receive, disassemble and submarine tunnel worker method butt joint, improved the flexibility that submarine tunnel worker method selected, and the work efficiency of construction is high, the civil engineering investment is few.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic longitudinal cross-sectional view of a forepoling hole arrangement and formation consolidation according to an embodiment of the present invention;
fig. 2 is a schematic top plan view of a micro-dismantling machine tunnel chamber structure of a submarine tunnel according to an embodiment of the present invention;
fig. 3 is a schematic structural section view of a micro-dismantling machine tunnel of a submarine tunnel according to an embodiment of the present invention.
Description of reference numerals:
1. primary support structure; 2. a secondary lining structure; 3. waterproof curtain cloth; 4. a portal steel ring; 5. plugging the wall with plain concrete; 6. building a lining in the shield body; 7. a shield body; 8. an intermediate layer; 9. a portal structure; 10. a shield segment; 11. pre-burying a lifting hook; 12. a steel bar connector; 13. segment bolts; 20. a micro-dismantling machine cavity; 100. a pilot hole; 200. the extent of formation consolidation.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The embodiment provides a shield mine combined construction method submarine tunnel miniature dismantling machine cavern, which comprises a primary support structure 1, a secondary lining structure 2, a portal structure 9, waterproof curtain cloth 3 and a portal steel ring 4, as shown in figures 1-3; the secondary lining structure 2 is arranged on the inner side of the primary support structure 1, and a micro-dismantling cavern cavity 20 is formed inside the secondary lining structure 2; the end part of the secondary lining structure 2 is inwards extended towards the cavity 20 of the miniature dismantling machine chamber to form the portal structure 9, and the clearance diameter in the portal structure 9 is 0.15m larger than the diameter of the shield cutter head; when the shield cutterhead is completely exposed out of the cavity 20 of the miniature dismantling chamber, the minimum distance from the edge of the shield cutterhead to the secondary lining structure 2 is 0.3m, so that the cavity 20 of the miniature dismantling chamber is provided with a dismantling operation space. The waterproof curtain cloth 3 and the portal steel ring 4 are embedded in the whole ring of the portal structure 9; a plain concrete blocking wall 5 is arranged at the end part of the tunnel door structure 9; one side of the built lining 6 in the shield body is fixedly connected with the secondary lining structure 2, and the other side is fixedly connected with the shield segment 10. The mine method tunnel and the shield method tunnel are connected into an integral structure.
The arch part of the secondary lining structure 2 is provided with a plurality of pre-buried lifting hooks 11 which are used as hoisting points of the shield dismantling machine. The 6 outsides of interior formwork lining of shield body are provided with the shield body 7, the interior formwork lining of shield 6 with intermediate level 8 has been laid between the shield body 7, intermediate level 8 comprises deformation buffer layer and waterproofing membrane. Reinforcing steel bar connectors 12 are embedded in the whole ring of the tunnel door structure 9, and the circumferential distance between the reinforcing steel bar connectors 12 is 0.2 m; and the shield inner building lining 6 is fixedly connected with the secondary lining structure 2 through the reinforcing steel bar connector 12. And the built lining 6 in the shield body is fixedly connected with a shield segment 10 through a segment bolt 13.
The embodiment also provides a tunnel seabed docking method of a shield mine combined construction method, as shown in fig. 1-3, the method includes the following steps:
and step S1, determining the lengths of the mine method section tunnel and the shield method section tunnel according to the functional requirements of ventilation and smoke exhaust of the tunnel, disaster prevention and evacuation and the like, and primarily selecting the construction method butt joint range.
And step S2, checking the engineering geological condition near the butt joint range, and determining the construction method butt joint positions of the mining method tunnel and the shield method tunnel according to the condition that the distance between the construction method butt joint positions and the unfavorable geological plane is not less than 3D, wherein D is the excavation span of the miniature demolition machine cavern.
And step S3, designing a longitudinal section of a tunnel line by combining the construction method butt joint position, wherein the thickness of the covering layer of weathered rock and slightly weathered rock in the tunnel vault at the construction method butt joint position is about 2-3D (D is the excavation span of the miniature demolition chamber).
And step S4, excavating a miniature dismantling machine cavity on the working surface of the mine tunnel, and constructing the primary support structure 1.
And step S5, drilling a plurality of advance holes 100 in the arch part of the miniature dismantling machine tunnel towards the shield tunnel, and rechecking geological conditions near the butt joint position, wherein the longitudinal coverage length of the advance holes 100 is L (L is the shield body length +3 m). And if the advanced hole probing result shows that surrounding rocks are broken or underground water is abundant, taking stratum reinforcing measures, wherein the reinforcing range is 3m outside the shield excavation line, and the longitudinal length is L (L is the shield body length +3 m).
Step S6, constructing a secondary lining structure 2 of the miniature dismantling machine cavern on the inner side of the primary support structure 1, constructing a portal structure 9 at the end part of the secondary lining structure 2, embedding waterproof curtain cloth 3 and a portal steel ring 4 along the whole ring of the portal structure 9, and molding a plain concrete end sealing wall 5 at the end part of the portal structure 9.
And step S7, retesting and correcting the shield tunneling axis when the shield cutterhead is 100m, 50m and 10m away from the plain concrete end sealing wall, and controlling the deviation of the tunneling axis.
And step S8, before the shield cutter head tunnels and breaks the plain concrete end-sealing wall 5, cleaning a shield muddy water bin and a muddy water circulating pipeline.
Step S9, the shield cutter head digs and breaks the plain concrete end sealing wall 5, the shield cutter head is completely exposed out of the miniature dismantling machine cavity 20 and then is shut down, and shield dismantling operation is carried out in sequence: preparing for dismantling the machine; then, matching and disassembling; disassembling a sheet feeding machine; disassembling a segment erector; disassembling the beam shaped like a Chinese character 'mi'; disassembling a man bin, a material bin and a stone crusher; disassembling a cutter head; disassembling a main drive; and (4) disassembling the propulsion oil cylinder.
And step S10, fixedly connecting one side of the built lining 6 in the shield body with the secondary lining structure 2, and fixedly connecting the other side with the shield segment 10.
Further, the shield tunneling equipment dismantling operation in step S9 includes the following steps:
(1) disassembling the machine and preparing: longitudinally tensioning and fixing a plurality of shield segments 10 close to the butt joint position by adopting a longitudinal tensioning device; grouting cement slurry outside the shield body, and fixing the shield body 7; filling and grouting the back of a plurality of shield segments 10 close to the butt joint position to plug underground water; and carrying out ultrasonic detection on the thickness of the shield body needing to be provided with the lifting lug, and rechecking whether the bearing capacity meets the lifting requirement of the disassembling machine. (the position of the lifting lug is changed according to the hoisting requirement, is not a fixed position and is not marked in the figure.)
(2) And (3) disassembling a rear assembly: the fluid pipelines and the electrical connections among the trolleys and between the trolleys and the host are sequentially disconnected, and the disassembled trolleys are transported to the originating end of the shield and then are hoisted out.
(3) Disassembling a sheet feeding machine: and disconnecting the feeding machine from the host machine, and transporting the shield to the originating end of the shield by adopting a flat car to lift the shield.
(4) Disassembling a segment erector: and laying steel rails on the shield tail, driving the flat car to the lower part of the erector, fixing the erector on the flat car through the matching of a chain block and a jack, and transporting the erector to the shield starting end and hanging out.
(5) Disassembling the beam shaped like the Chinese character 'mi': and (4) extending the steel rail to the lower part of the beam shaped like a Chinese character 'mi', hoisting and fixing the beam shaped like a Chinese character 'mi' on a flat car by using the temporary lifting lug and the auxiliary chain block, and transporting the beam shaped like a Chinese character 'mi' to the shield initiating end to be hoisted out.
(6) Disassembling a man bin, a material bin and a stone crusher: the shield body is provided with a lifting lug, and the human bin, the material bin and the stone crusher are lifted to the flat car through the chain block and transported to the starting end to be lifted out.
(7) Disassembling a cutter head: and an active stirring rod at the back of the cutter disc is used for cutting edge blocks of the cutter disc and finally a center block of the cutter disc by utilizing the assistance of a chain block and following the principle of symmetrical segmentation from top to bottom, and the cutter disc is conveyed out of the hole by the end of the mine tunnel after cutting.
(8) Disassembling a main drive: and (3) extending the steel rail to the main drive, dragging the flat car to the lower part of the main drive, fixing the main drive on the flat car, cutting off the connection between the shield body and the main drive, and transporting the main drive to the initial end and hoisting out.
(9) Disassembling the propulsion oil cylinder, cutting off flanges, partition plates and ring ribs in the shield body 7, and polishing and cleaning the shield body.
Further, in the step S10, the outside of the in-shield cast lining 6 is the abandoned shield 7, an intermediate layer 8 is laid between the in-shield cast lining 6 and the shield 7, and the intermediate layer 8 is composed of a deformation buffer layer and a waterproof roll.
Further, in the step S10, one side of the building lining 6 in the shield body is fixedly connected to the secondary lining structure 2 through the reinforcing bar connector 12 pre-embedded in the portal structure 9, and the other side is fixedly connected to the shield segment 10 through the segment bolt 13.
According to the technical scheme, the miniature dismantling machine cavern for the submarine tunnel in the shield mine combined construction method can be used for completing receiving and dismantling of submarine shield equipment and butt joint of the submarine tunnel construction method, flexibility of selection of the submarine tunnel construction method is improved, construction efficiency is high, and civil engineering investment is low.
The embodiments of the present invention have been described in detail through the embodiments, but the description is only exemplary of the embodiments of the present invention and should not be considered as limiting the scope of the embodiments of the present invention. The scope of protection of the embodiments of the present invention is defined by the claims. All utilize technical scheme of the embodiment of the utility model, or technical staff in the field is in the utility model discloses under embodiment technical scheme's the inspiration the utility model discloses in the essence and the protection scope of the embodiment, design similar technical scheme and reach above-mentioned technological effect, perhaps to the impartial change and improvement etc. that the application scope was made, all should still belong to within the protection scope is covered to the patent of the embodiment of the utility model.
Claims (5)
1. A shield mine combined construction method submarine tunnel miniature dismantling machine cavern is characterized by comprising a primary support structure (1), a secondary lining structure (2), a portal structure (9), waterproof curtain cloth (3) and a portal steel ring (4); the secondary lining structure (2) is arranged on the inner side of the primary support structure (1), and a miniature dismantling machine cavern cavity (20) is formed inside the secondary lining structure (2); the end part of the secondary lining structure (2) is inwards extended towards the cavity (20) of the miniature dismantling chamber to form the portal structure (9), and the clearance diameter in the portal structure (9) is 0.15m larger than the diameter of the shield cutter head; the waterproof curtain cloth (3) and the portal steel ring (4) are embedded in the whole ring of the portal structure (9); a plain concrete blocking wall (5) is arranged at the end part of the tunnel door structure (9); one side of the built lining (6) in the shield body is fixedly connected with the secondary lining structure (2), and the other side of the built lining is fixedly connected with the shield segment (10).
2. The shield mine combined construction method submarine tunnel mini-breaker cavern of claim 1, characterized in that the arch of the secondary lining structure (2) is provided with a plurality of pre-buried lifting hooks (11).
3. The shield mine combined construction method submarine tunnel mini-dismantling machine cavern of claim 1, characterized in that a shield body (7) is arranged outside a mold lining (6) in the shield body, an intermediate layer (8) is laid between the mold lining (6) in the shield body and the shield body (7), and the intermediate layer (8) is composed of a deformation buffer layer and a waterproof coiled material.
4. The shield mine combined construction method submarine tunnel micro-dismantling machine cavern of claim 1, characterized in that the portal structure (9) is pre-embedded with reinforcing bar connectors (12) in a full ring, and the circumferential spacing between the reinforcing bar connectors (12) is 0.2 m; and the shield body internal construction lining (6) is fixedly connected with the secondary lining structure (2) through the steel bar connector (12).
5. The shield mine combined construction method submarine tunnel miniature dismantling machine cavern of claim 1, characterized in that the built lining (6) in the shield body is fixedly connected with the shield segment (10) through segment bolts (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120404398.0U CN214660179U (en) | 2021-02-24 | 2021-02-24 | Shield mine combined construction method submarine tunnel miniature dismantling machine cavern |
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| CN202120404398.0U CN214660179U (en) | 2021-02-24 | 2021-02-24 | Shield mine combined construction method submarine tunnel miniature dismantling machine cavern |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832785A (en) * | 2021-02-24 | 2021-05-25 | 中铁第六勘察设计院集团有限公司 | Shield mine combined construction method tunnel seabed butt joint method and miniature dismantling machine cavern |
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2021
- 2021-02-24 CN CN202120404398.0U patent/CN214660179U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832785A (en) * | 2021-02-24 | 2021-05-25 | 中铁第六勘察设计院集团有限公司 | Shield mine combined construction method tunnel seabed butt joint method and miniature dismantling machine cavern |
| CN112832785B (en) * | 2021-02-24 | 2024-05-24 | 中铁第六勘察设计院集团有限公司 | Shield mine combined construction method tunnel submarine docking method and miniature dismounting machine cavity |
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