CN210134935U - Shield underground butt joint structure - Google Patents
Shield underground butt joint structure Download PDFInfo
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- CN210134935U CN210134935U CN201921079889.1U CN201921079889U CN210134935U CN 210134935 U CN210134935 U CN 210134935U CN 201921079889 U CN201921079889 U CN 201921079889U CN 210134935 U CN210134935 U CN 210134935U
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Abstract
The utility model discloses a shield underground docking structure, wherein an insertion ring chamber (5) is arranged on the inner surface of a shield shell of a shield machine (1), a first sealing element (6) is arranged at the front end of the insertion ring chamber (5), an insertion ring (7) is arranged in the insertion ring chamber (5), and the tail end of the insertion ring (7) is connected with a jack (8); and a receiving ring chamber (9) corresponding to the inserting ring chamber (5) is arranged on the inner surface of the shield shell of the other shield machine (1), and a second sealing piece (10) is arranged in the receiving ring chamber (9). The utility model also discloses a shield constructs underground docking structure's construction method. The utility model discloses need not to set up the working well, the butt joint place does not receive the influence of ground, geology and underground pipeline to go on under the protection that the steel inserted the ring, can the safe and reliable ground carry out the construction operation, can practice thrift construction cost and reduction of erection time greatly.
Description
Technical Field
The utility model relates to a shield constructs structure and construction method, especially relates to a shield constructs underground butt-joint structure and construction method, belongs to shield construction technical field.
Background
In cities, shield tunnels are often arranged along roads, but the ground traffic conditions of the urban roads are complex and underground pipelines are dense. At present, the shield tunnel is developed in the direction of long distance and great depth. When a single shield tunnel is too long, the problems of low tunneling efficiency and long construction period are met by tunneling from one side, so that a working well needs to be arranged in the middle of a shield line, but the working well for shield construction is arranged on a road to meet the work of relocation and traffic evacuation of a large number of underground pipelines. Therefore, the utility model provides a structure and a construction method which start the shield machine from two ends and directly butt joint without a working well in the middle.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, the utility model provides a shield constructs underground butt-joint structure, this structure need not to set up the working well, and the butt joint place does not receive the influence of ground, geology and pipeline to go on under the protection of steel insert ring, can the safe and reliable ground carry out the construction operation.
And simultaneously, the utility model provides a shield constructs underground docking structure's construction method, this construction method can practice thrift construction cost and reduction of erection time greatly, and is little to peripheral environmental impact, because whole underground operation that adopts, does not have the influence to the traffic and the structures on ground.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the shield underground butt joint structure comprises two shield machines tunneling in opposite directions at two ends of the same tunneling line, wherein the opposite surfaces of the two shield machines are respectively provided with a radially telescopic cutter head, and the opposite surfaces of the two radially telescopic cutter heads are respectively connected with a driving part;
an insertion ring chamber is arranged on the inner surface of a shield shell of one shield machine, a first sealing element is arranged at the front end of the insertion ring chamber, an insertion ring is arranged in the insertion ring chamber, and the tail end of the insertion ring is connected with a jack;
and a receiving ring chamber corresponding to the inserting ring chamber is arranged on the inner surface of the shield shell of the other shield machine, and a second sealing element is arranged in the receiving ring chamber.
The first sealing element comprises two lip type sealing rings, the inserting ring penetrates through the sealing rings, and a guide ring is arranged between the inserting ring and the lower surface of the inserting ring chamber.
The receiving ring chamber is an annular groove, a second sealing element is arranged in the annular groove, and the second sealing element is an annular porous sealing gasket.
The cutter head capable of radially stretching comprises a cutter head outer ring, the diameter of the cutter head outer ring is the same as that of the shield shell, and the cutter head outer ring and the shield shell are arranged concentrically; the cutter head is characterized in that a plurality of telescopic spokes are arranged in the cutter head outer ring and comprise radial hollow spoke shells, telescopic spoke rods are arranged in each spoke cavity of each spoke shell, and the free ends of the telescopic spoke rods are connected to the inner surface of the cutter head outer ring or are separated from the cutter head outer ring through connecting pieces.
And a connector clip used for being connected with the cutter head outer ring is arranged on the contact surface of the connecting piece and the cutter head outer ring. The plug connector is including setting up in the arch of blade disc outer lane internal surface is in with the setting jack on the connecting piece, protruding with jack looks adaptation.
The front end of the insert ring is an inclined opening.
The insert ring is made of steel.
The jack is a hydraulic jack.
The construction method of the shield underground butt joint structure comprises the following steps:
s01, stopping tunneling when the two shield machines moving in opposite directions reach the specified butt joint position;
s02, the cutter head capable of radially extending and retracting retracts is retracted to an extreme position, so that the connecting piece is separated from the outer ring of the cutter head;
s03, starting the jack, and inserting the inserting ring into a receiving ring chamber of another shield machine to form a butt joint ring;
s04, removing the butt joint ring and the muck in the shield tunneling machine;
s05, welding steel plates at the butt joint ring along the circumference of the insert ring, and integrally jointing the two shield machines;
s06, dismantling all parts of the two shield tunneling machines except the shield shell;
s07, pouring secondary lining concrete on the inner surface of the shield shell, and connecting the two tunnels into a whole.
At S06, the removing method includes cleaving.
The utility model discloses following beneficial effect has:
1. the docking site is not affected by the ground, geology and underground pipelines and can be freely selected.
2. The construction method is carried out under the protection of the steel insert ring, and the construction operation can be safely and reliably carried out.
3. The utility model discloses it is little to peripheral environmental impact, because whole adopt the underground operation, do not have the influence to the traffic and the structures on ground.
4. The utility model discloses a butt joint operation need not to carry out geological improvement work, and need not execute and do the working well, can practice thrift construction cost and reduction of erection time greatly.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the radially extendable cutter head of the present invention when it is extended radially;
fig. 3 is a schematic structural view of the radially retractable cutter head of the present invention when it is radially retracted;
FIG. 4 is a schematic view of the structure of the insert ring chamber of the present invention;
FIG. 5 is a schematic view of the receiving ring chamber of the present invention;
fig. 6 is a schematic structural view of the two shield tunneling machines of the present invention during docking;
fig. 7 is the structural schematic diagram of the two shield tunneling machines of the present invention when they are butted to form a whole tunnel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting of the invention.
As shown in fig. 1, this embodiment discloses a shield underground docking structure, include two shield machines 1 that tunnel in opposite directions at same tunnelling circuit both ends, two the opposite face of shield machine 1 all is provided with radially flexible blade disc 2, two the looks back (should be located shield machine 1 inside back to back) of radially flexible blade disc 2 all even has drive assembly 3, and drive assembly 3 can be hydraulic motor.
An insert ring chamber 5 is arranged on the inner surface of a shield shell of one shield machine 1, a first sealing element 6 is arranged at the front end of the insert ring chamber 5, an insert ring 7 is arranged in the insert ring chamber 5, and the tail end of the insert ring 7 is connected with a jack 8;
the inner surface of the shield shell of the other shield machine 1 is provided with a receiving ring chamber 9 corresponding to the inserting ring chamber 5, and a second sealing element 10 is arranged in the receiving ring chamber 9.
Two shield machines 1 of the embodiment tunnel oppositely on two sides of the same tunneling line, shield propulsion jacks 20 are arranged on shield shells of the two shield machines 1, when the shield machines reach a specified butt joint position, the outer diameter of a radially telescopic cutter head 2 of the two shield machines 1 is reduced, and then an embedded insert ring 7 of one shield machine 1 is inserted into a receiving ring chamber 9 of the other shield machine 1, so that the two shield machines 1 are mechanically combined into a whole. And then manually removing the slag soil in the butt joint chamber and parts in the shield tunneling machine 1, and pouring secondary lining concrete 19 to form a whole tunnel.
In this embodiment, a specific structure of the radially extendable cutter head 2 is as shown in fig. 2 to 3, the radially extendable cutter head 2 includes a cutter head outer ring 12, a diameter of the cutter head outer ring 12 is the same as a diameter of the shield shell, and the cutter head outer ring 12 and the shield shell are concentrically arranged; the novel cutter head is characterized in that a plurality of telescopic spokes 13 are arranged in the cutter head outer ring 12, each telescopic spoke 13 comprises a radial hollow spoke shell 14, a telescopic spoke rod 16 is arranged in each spoke cavity 15 of each spoke shell 14, and the free ends of the telescopic spoke rods 16 are connected to the inner surface of the cutter head outer ring 12 or are separated from the cutter head outer ring 12 through connecting pieces 17.
And a plug connector used for being connected with the cutter head outer ring 12 is arranged on the contact surface of the connecting piece 17 and the cutter head outer ring 12.
The plug connector comprises a protrusion arranged on the inner surface of the cutter head outer ring 12 and a jack arranged on the connecting piece 17, and the protrusion is matched with the jack. Because the cutter head 2 capable of radially extending and retracting is radially extended and retracted, the plug connector cannot influence the radial extension and retraction of the cutter head 2, and the connection strength of the connecting piece 17 and the outer ring 12 of the cutter head can be ensured when the cutter head 2 capable of radially extending and retracting extends radially, so that the normal use of the cutter head 2 capable of radially extending and retracting is ensured.
The two shield machines 1 of the present embodiment both employ retractable spoke type cutter heads, and when the two shield machines 1 reach the designated butt joint position, the spokes (i.e., the retractable spokes 16) of the shield machines 1 are retracted, and the outer ring 12 of the cutter head is discarded to make room for the insert ring 7.
As shown in fig. 4, the first sealing member 6 includes two lip type sealing rings, the insert ring 7 passes through the sealing rings, and a guide ring 11 is disposed between the insert ring 7 and the lower surface of the insert ring chamber 5. The insert ring 7 is made of steel.
The specific structure of the insert ring chamber 5 of the present embodiment is: the inner ring and the outer ring at the front end of the insert ring chamber 5 adopt two lip type seals to prevent the shield machine 1 from leaking water, a guide ring 11 is arranged on the inner ring of the insert ring chamber 5 and is used for supporting the insert ring 7, the rear end of the insert ring 7 uses a hydraulic jack to eject the insert ring 7, and the front end of the insert ring 7 is made into an inclined opening shape to reduce the ejection resistance.
As shown in fig. 5, the receiving ring chamber 9 is a ring groove, the second sealing element 10 is arranged in the ring groove, and the second sealing element 10 is an annular porous sealing gasket.
The specific structure of the receiving ring chamber 9 of the present embodiment is: the receiving ring chamber 9 is formed by installing an annular multi-hole sealing gasket on a ring groove at the front end of the other shield machine 1, and plays a role in sealing and leakage prevention when the inserting ring 7 is pushed against the annular multi-hole sealing gasket, and the sealing gasket is designed to be multi-hole, so that the shrinkage of the sealing gasket is increased, and a better sealing effect can be achieved.
As shown in fig. 6 to 7, the embodiment discloses a construction method of a shield underground butt joint structure, which includes the following steps:
s01, stopping tunneling when the two shield machines 1 moving in opposite directions reach the appointed butt joint position;
s02, retracting the radially retractable cutter head 2 to a limit position, which is a position when the retractable spoke 16 is fully retracted into the spoke cavity 15; separating the connecting piece 17 from the cutterhead outer ring 12 to make room for the insert ring 7;
s03, the jack 8 is started, the insert ring 7 is inserted into the receiving ring chamber 9 of another shield machine 1 to form a butt joint ring, and the steel insert ring 7 resists the external water and soil pressure;
s04, manually removing the butt joint ring and the muck in the shield tunneling machine 1;
s05, welding the butt joint ring by using a steel plate along the inserting ring 7 for one circle, integrally jointing the two shield tunneling machines 1, and further improving the capacity of the inserting ring 7 for resisting the external water and soil pressure;
s06, dismantling (cutting) all parts of the two shield tunneling machines 1 except the shield shell;
s07, pouring secondary lining concrete 19 on the inner surface of the shield shell, and connecting the two tunnels into a whole.
The shield underground butt joint structure and the construction method have the following advantages:
1. the docking site is not affected by the ground, geology and underground pipelines and can be freely selected.
2. The construction method is carried out under the protection of the steel insert ring, and the construction operation can be safely and reliably carried out.
3. The embodiment has little influence on the surrounding environment, and has no influence on the traffic and the structures on the ground because the whole process adopts underground operation.
4. The butt joint operation of the embodiment does not need to carry out geological improvement work, does not need to be carried out as a working well, and can greatly save the construction cost and shorten the construction period.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Shield constructs underground butt joint structure, its characterized in that: the shield tunneling machine comprises two shield tunneling machines (1) tunneling in opposite directions at two ends of the same tunneling line, wherein two cutterheads (2) capable of radially stretching are arranged on opposite surfaces of the two shield tunneling machines (1);
an insert ring chamber (5) is arranged on the inner surface of a shield shell of one shield machine (1), a first sealing element (6) is arranged at the front end of the insert ring chamber (5), an insert ring (7) is arranged in the insert ring chamber (5), and the tail end of the insert ring (7) is connected with a jack (8);
and a receiving ring chamber (9) corresponding to the inserting ring chamber (5) is arranged on the inner surface of the shield shell of the other shield machine (1), and a second sealing piece (10) is arranged in the receiving ring chamber (9).
2. The shield underground docking structure of claim 1, wherein: the first sealing element (6) comprises two lip type sealing rings, the inserting ring (7) penetrates through the sealing rings, and a guide ring (11) is arranged between the inserting ring (7) and the lower surface of the inserting ring chamber (5).
3. The shield underground docking structure of claim 1, wherein: the receiving ring chamber (9) is an annular groove, a second sealing element (10) is arranged in the annular groove, and the second sealing element (10) is an annular porous sealing gasket.
4. The shield underground docking structure of claim 1, wherein: the cutter head (2) capable of radially extending and retracting comprises a cutter head outer ring (12), the diameter of the cutter head outer ring (12) is the same as that of the shield shell, and the cutter head outer ring (12) and the shield shell are arranged concentrically; be provided with a plurality of scalable spokes (13) in blade disc outer lane (12), scalable spoke (13) are including being radial hollow spoke shell (14), all be provided with flexible spoke pole (16) in each spoke cavity (15) of spoke shell (14), the free end of flexible spoke pole (16) pass through connecting piece (17) connect in the internal surface of blade disc outer lane (12) or with blade disc outer lane (12) phase separation.
5. The shield underground docking structure of claim 4, wherein: the connecting piece (17) with be provided with on the contact surface of blade disc outer lane (12) be used for with the plug connector that blade disc outer lane (12) link to each other.
6. The shield underground docking structure of claim 1 or 2, wherein: the front end of the insert ring (7) is an inclined opening.
7. The shield underground docking structure of claim 1 or 2, wherein: the insert ring (7) is made of steel.
8. The shield underground docking structure of claim 1, wherein: the jack (8) is a hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079889.1U CN210134935U (en) | 2019-07-11 | 2019-07-11 | Shield underground butt joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079889.1U CN210134935U (en) | 2019-07-11 | 2019-07-11 | Shield underground butt joint structure |
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| Publication Number | Publication Date |
|---|---|
| CN210134935U true CN210134935U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921079889.1U Active CN210134935U (en) | 2019-07-11 | 2019-07-11 | Shield underground butt joint structure |
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| CN (1) | CN210134935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242311A (en) * | 2019-07-11 | 2019-09-17 | 江苏格睿特管网工程有限公司 | Shield jointed underground structure and construction method |
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2019
- 2019-07-11 CN CN201921079889.1U patent/CN210134935U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242311A (en) * | 2019-07-11 | 2019-09-17 | 江苏格睿特管网工程有限公司 | Shield jointed underground structure and construction method |
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