CN111911170A - Starting device of integrated shield tunneling machine and using method thereof - Google Patents
Starting device of integrated shield tunneling machine and using method thereof Download PDFInfo
- Publication number
- CN111911170A CN111911170A CN202010567381.7A CN202010567381A CN111911170A CN 111911170 A CN111911170 A CN 111911170A CN 202010567381 A CN202010567381 A CN 202010567381A CN 111911170 A CN111911170 A CN 111911170A
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- China
- Prior art keywords
- shield
- steel sleeve
- machine
- air bag
- starting device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
Abstract
The invention discloses an integrated shield machine starting device and a using method thereof, belonging to the technical field of shield construction and solving the technical problems that: the steel sleeve starting device in the prior art has the problems of long whole and heavy weight and comprises a connecting ring detachably connected with a portal embedded ring, wherein a steel sleeve is fixedly connected to one end, away from the portal embedded ring, of the connecting ring, an air bag is arranged in the end, away from the connecting ring, of the steel sleeve, and a plurality of steel wire brushes are arranged on one side, close to the connecting ring, of the air bag; the steel wire brush and the air bag act together, so that the shield machine can be sealed, and the reliability of the device is improved; the sealing performance of the shield tunneling machine in the starting device is ensured by arranging a plurality of steel wire brushes and air bags. The length of the steel sleeve is changed from the existing 10 meters to 2.5 meters, so that the installation space is saved, the installation process flow is simplified, the sealing performance in the starting device is ensured by arranging the overlong steel sleeve, the light weight of the steel sleeve is realized, and the sealing performance and the reliability of the steel sleeve are ensured.
Description
Technical Field
The invention belongs to the technical field of shield construction, and particularly belongs to an integrated shield machine starting device and a using method thereof.
Background
Under the condition that the pressure of traffic travel is gradually increased, some major and middle cities in China are actively building track traffic, subway interval tunnels built in China at present are mainly constructed by a shield method, the starting and receiving of a shield machine are key points and difficulties in construction, and particularly in weak strata and water-rich strata, the shield machine is easy to cause instability of an excavation surface after being broken, so that accidents of soil body collapse and water inrush occur.
When the shield starting end encounters the problems of poor geological stability and overhigh underground water pressure, two methods are usually adopted. The first method is to reinforce the risk stratum, improve the stratum strength, permeability and the like, and avoid stratum collapse caused by stratum water and soil loss when the shield enters and exits the tunnel portal, but the method is limited by boundary conditions such as a field, a construction period, a reinforcing range pipeline and the like, the reinforcing effect of the stratum is not ideal, and safety indexes cannot be achieved.
The second method is commonly used at present, the problem of weak stratum is solved by using a steel sleeve launching device, the existing steel sleeve launching device integrally comprises a shield machine in a steel sleeve, the integral length of the steel sleeve is about 10 meters, the pressure in a tunnel is required to be met, steel used by the steel sleeve is thicker, the existing steel sleeve is heavy, high in cost and difficult to install and disassemble, the steel sleeve is too large as a whole, when the filler is pressed in the steel sleeve, multiple times of fillers are needed to ensure the pressure balance between the pressure sleeve and the pressure in the tunnel, the joint of the steel sleeve with longer length is too many, and the problem of poor sealing is easy to occur.
Disclosure of Invention
Aiming at the problems of longer overall steel sleeve initiation device and heavier weight in the prior art, the invention provides an integrated shield machine initiation device, which aims to: the length of the traditional steel sleeve is shortened, and the sealing performance of the steel sleeve is guaranteed.
The technical scheme adopted by the invention is as follows:
the utility model provides a shield constructs quick-witted originating device integrates, includes and can dismantle the go-between of being connected with the pre-buried ring in portal, the one end rigid coupling that the pre-buried ring in portal was kept away from to the go-between has the steel sleeve, be provided with the gasbag in the tip of the go-between that the steel sleeve was kept away from, one side that the gasbag is close to the go-between is provided with the several steel brush.
By adopting the scheme, the steel wire brush is arranged at the tail part of the steel sleeve, the air bag is arranged behind the steel wire brush, when a main machine of the shield machine enters the steel sleeve, the shield machine rolls the steel wire brush, so that the steel wire brush is tightly attached to the shield machine, meanwhile, the air bag is also tightly attached to the shield machine, and the steel wire brush and the air bag act together to seal the shield machine and improve the reliability of the device; the invention ensures the sealing performance of the shield tunneling machine in the starting device by arranging the plurality of steel wire brushes and the air bags, so that the length of the steel sleeve is changed from the existing 10 meters to 2.5 meters, thereby avoiding the arrangement of the overlong steel sleeve to ensure the sealing performance in the starting device, realizing the light weight of the steel sleeve and ensuring the sealing performance and the reliability of the steel sleeve.
Preferably, the top of the steel sleeve is provided with a feed inlet and a grouting hole, and the bottom of the steel sleeve is provided with a water outlet. By adopting the preferred scheme, slag or inert slurry is filled into the steel sleeve through the charging hole and the grouting hole, and soil pressure balance in the steel sleeve is established.
Preferably, a grease injection hole is formed in the steel sleeve, and the grease injection hole is located between the plurality of steel wire brushes. Adopt this preferred scheme, set up between the steel brush and annotate the fat hole, use and annotate fat hole and annotate fat and guarantee the sealed effect between steel sleeve and the shield structure machine into the steel sleeve.
Preferably, the steel sleeve comprises an upper cylinder body and a lower cylinder body which are arranged from top to bottom, the upper cylinder body is detachably connected with the lower cylinder body, and a material conveying port is formed in the side face of the lower cylinder body. By adopting the preferred scheme, the material conveying opening is arranged for conveying tools and personnel to enter and exit when the portal is chiseled.
Preferably, a groove is formed in the steel sleeve, the air bag is arranged in the groove, and a continuous rubber belt is arranged on one side, far away from the groove, of the air bag. By adopting the preferred scheme, the uninflated air bag can be collected in the groove by using the continuous rubber belt, so that the damage caused by the direct contact of the air bag and the shield machine is avoided.
Preferably, a sealing gasket is arranged between the upper barrel and the lower barrel. By adopting the preferred scheme, the sealing gasket is arranged between the upper cylinder body and the lower cylinder body, so that the sealing property of the steel sleeve is ensured.
A use method of an integrated shield machine initiating device comprises the following steps:
pushing a shield machine host machine to reserve an installation space of an originating device between a tunnel portal and a shield machine cutter head, fixing a connecting ring and a tunnel portal embedded ring, and arranging a reaction frame support at a shield tail of the shield machine;
secondly, assembling negative ring duct pieces, slowly pushing a main machine of the shield machine into the starting device, stopping pushing until a cutter head of the shield machine reaches an air bag, and then manually breaking a tunnel portal;
after the tunnel door is broken, pushing the cutter head of the shield machine until the cutter head contacts the tunnel face of the tunnel door to stop, then inflating the air bag, filling slag material countersink inert slurry into the starting device, and simultaneously injecting grease into the steel wire brush;
step four, building earth pressure balance in the starting device, performing pressure maintaining test on the starting device, and starting the shield machine to start normal tunneling of the tunnel boring door after the test is finished;
step five, when the tail part of the shield machine is about to be separated from the air bag, stopping tunneling the shield machine, then releasing the air bag, continuing tunneling the shield machine, when the tail part of the shield machine is completely separated from the air bag, stopping tunneling, and then inflating the air bag;
and step six, normally tunneling the shield tunneling machine, starting synchronous grouting, and finishing starting of the shield tunneling machine.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the steel wire brush is arranged at the tail part of the steel sleeve, the air bag is arranged behind the steel wire brush, when the main body of the shield machine enters the steel sleeve, the shield machine rolls the steel wire brush, so that the steel wire brush is tightly attached to the shield machine, meanwhile, the air bag is also tightly attached to the shield machine, and the steel wire brush and the air bag act together, so that the shield machine can be sealed, and the reliability of the device is improved; the invention ensures the sealing performance of the shield tunneling machine in the starting device by arranging the plurality of steel wire brushes and the air bags, so that the length of the steel sleeve is changed from the existing 10 meters to 2.5 meters, thereby avoiding the arrangement of the overlong steel sleeve to ensure the sealing performance in the starting device, realizing the light weight of the steel sleeve and ensuring the sealing performance and the reliability of the steel sleeve.
2. The invention fills slag or inert slurry into the steel sleeve through the charging hole and the grouting hole, and establishes earth pressure balance in the steel sleeve; installing grease injection holes between the steel wire brushes, and injecting grease into the steel sleeve by using the grease injection holes to ensure the sealing effect between the steel sleeve and the shield tunneling machine; arranging a material conveying opening for conveying tools and allowing personnel to enter and exit when a portal is chiseled; the continuous rubber belt is used to collect the uninflated air bag in the groove, so that the damage caused by the direct contact of the air bag and the shield machine is avoided; a sealing gasket is arranged between the upper cylinder body and the lower cylinder body, so that the sealing property of the steel sleeve is ensured.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of: a schematic side view angle of one embodiment of the present invention.
FIG. 2 is a diagram of: an assembled side view schematic of an embodiment of the invention.
FIG. 3 is a diagram of: a perspective view of one embodiment of the present invention.
Reference numerals: 1-a portal pre-buried ring; 2-connecting rings; 3-a steel sleeve; 4-air bag; 5-a steel wire brush; 6-a feed inlet; 7-grouting holes; 8-a water outlet; 9-grease injection hole; 10-material conveying port; 11-a continuous rubber band; 12-sealing gasket.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention is described in detail below with reference to fig. 1-3.
The utility model provides a shield constructs quick-witted inception device integrates, includes can dismantle the go-between 2 of being connected with the pre-buried ring 1 in portal, the one end rigid coupling that the pre-buried ring 1 in portal was kept away from to go-between 2 has steel sleeve 3, be provided with gasbag 4 in the tip of the go-between 2 that steel sleeve 3 kept away from, one side that gasbag 4 is close to go-between 2 is provided with several steel brush 5.
The top of the steel sleeve 3 is provided with a feed inlet 6 and a grouting hole 7, and the bottom of the steel sleeve 3 is provided with a water outlet 8.
And a grease injection hole 9 is formed in the steel sleeve 3, and the grease injection hole 9 is positioned among the plurality of steel wire brushes 5.
The steel sleeve 3 comprises an upper barrel body and a lower barrel body which are arranged from top to bottom, the upper barrel body is detachably connected with the lower barrel body, and a material conveying port 10 is formed in the side face of the lower barrel body.
A groove is formed in the steel sleeve 3, the air bag 4 is arranged in the groove, and a continuous rubber belt 11 is arranged on one side, far away from the groove, of the air bag 4.
And a sealing gasket 12 is arranged between the upper barrel body and the lower barrel body.
A use method of an integrated shield machine initiating device comprises the following steps:
pushing a shield machine host machine to reserve an installation space of an originating device between a tunnel portal and a shield machine cutter head, fixing a connecting ring and a tunnel portal embedded ring, and arranging a reaction frame support at a shield tail of the shield machine;
secondly, assembling negative ring duct pieces, slowly pushing a main machine of the shield machine into the starting device, stopping pushing until a cutter head of the shield machine reaches an air bag, and then manually breaking a tunnel portal;
after the tunnel door is broken, pushing the cutter head of the shield machine until the cutter head contacts the tunnel face of the tunnel door to stop, then inflating the air bag, filling slag material countersink inert slurry into the starting device, and simultaneously injecting grease into the steel wire brush;
step four, building earth pressure balance in the starting device, performing pressure maintaining test on the starting device, and starting the shield machine to start normal tunneling of the tunnel boring door after the test is finished;
step five, when the tail part of the shield machine is about to be separated from the air bag, stopping tunneling the shield machine, then releasing the air bag, continuing tunneling the shield machine, when the tail part of the shield machine is completely separated from the air bag, stopping tunneling, and then inflating the air bag;
and step six, normally tunneling the shield tunneling machine, starting synchronous grouting, and finishing starting of the shield tunneling machine.
In the scheme, the connecting ring 2 and the steel sleeve 3 are integrally formed, the bottom of the steel sleeve 3 is fixed through a mounting base, a groove, namely a mounting groove of the air bag 4, is arranged on the inner ring of the end part, far away from the connecting ring 2, of the steel sleeve 3, the air bag 4 is arranged in the groove, the notch of the groove is sealed by a continuous rubber belt 11, the steel wire brush 5 is arranged close to the air bag 4, two steel wire brushes 5 are arranged along the inner ring of the sleeve, the steel wire brush 5 is formed by curling a plurality of thin steel wires, the steel wire brush 5 is in an inclined L shape when not extruded by a shield machine, and a grease injection hole 9 is arranged between the two; the steel sleeve is also provided with a feed inlet 6, a grouting hole 7 and a water drainage hole 8, the feed inlet 6 and the grouting hole 7 are arranged on the upper barrel, a water outlet 8 and a material transportation hole 10 are arranged on the lower barrel, the upper barrel is provided with three feed inlets 6, the top of the upper barrel is one, two sides of the upper barrel are respectively provided with one, the material transportation holes 10 are respectively arranged on two sides of the lower barrel, the upper barrel and the lower barrel on the lower barrel are connected through bolts, and a sealing gasket 12 is arranged between the upper barrel and the lower barrel.
When the invention is used, the shield machine is normally put into a well, after the shield machine is assembled, the whole shield machine is pushed in the opposite direction of the portal, so that an installation space of the invention is reserved between the portal and the shield machine, the invention is installed in advance, the invention is hung to the reserved space, the portal embedded ring 1 and the connecting ring 2 of the invention are connected by using bolts, then a reaction frame and a support are installed at the tail shield position of the shield machine, after the reaction frame is installed, a negative ring segment is assembled, the shield machine is pushed into the steel sleeve 3, when a cutter head of the shield machine passes through the air bag 4 of the invention, the shield machine is stopped to be pushed, a worker enters the steel sleeve 3 from a material conveying port 10, the portal is broken, then the worker leaves the steel sleeve 3, the shield machine is continuously pushed until the cutter head of the shield machine is close to the tunnel portal face, then the air bag 4 is inflated, so as to ensure that the air bag 4 is close to the shield machine, then, filling slag or inert slurry into the steel sleeve 3 through the charging opening 6, and injecting grease into the grease injection hole 9 to ensure the sealing between the steel wire brush 5 and the steel sleeve 3, thereby establishing soil pressure balance in the steel sleeve 3, and performing pressure maintaining test on the steel sleeve, ensuring the sealing of the starting device to be normal, after the test is qualified, starting the tunnel door of the shield machine to start normal tunneling, and normally tunneling the shield machine, when the tail shield of the shield machine leaves the air bag 4, stopping the tunneling of the shield machine, deflating and decompressing the air bag 4, preventing the air bag 4 in an inflated state from being cut by the tail shield, continuing the shield machine to tunnel, and when the tail shield completely leaves the air bag 4, continuing to inflate the air bag 4, so that the air bag 4 wraps the duct piece, and after the air bag 4 wraps the duct piece, the shield machine normally tunnels, and starts synchronous grouting.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (7)
1. The utility model provides a shield constructs quick-witted originating device integrates which characterized in that: include go-between (2) of dismantling the connection with pre-buried ring (1) of portal, the one end rigid coupling that pre-buried ring (1) of portal was kept away from in go-between (2) has steel sleeve (3), be provided with gasbag (4) in the tip of go-between (2) that steel sleeve (3) were kept away from, one side that gasbag (4) are close to go-between (2) is provided with several steel brush (5).
2. The integrated shield tunneling machine starting device according to claim 1, wherein: the top of the steel sleeve (3) is provided with a feed inlet (6) and a grouting hole (7), and the bottom of the steel sleeve (3) is provided with a water outlet (8).
3. The integrated shield tunneling machine starting device according to claim 1, wherein: and a grease injection hole (9) is formed in the steel sleeve (3), and the grease injection hole (9) is positioned among the plurality of steel wire brushes (5).
4. The integrated shield tunneling machine starting device according to claim 1, wherein: the steel sleeve (3) comprises an upper barrel body and a lower barrel body which are arranged from top to bottom, the upper barrel body is detachably connected with the lower barrel body, and a material conveying port (10) is formed in the side face of the lower barrel body.
5. The integrated shield tunneling machine starting device according to claim 1, wherein: a groove is formed in the steel sleeve (3), the air bag (4) is arranged in the groove, and a continuous rubber belt (11) is arranged on one side, far away from the groove, of the air bag (4).
6. The integrated shield tunneling machine starting device according to claim 4, wherein: a sealing gasket (12) is arranged between the upper barrel body and the lower barrel body.
7. The use method of the integrated shield tunneling machine starting device applied to the device of claim 1 is characterized by comprising the following steps:
pushing a shield machine host machine to reserve an installation space of an originating device between a tunnel portal and a shield machine cutter head, fixing a connecting ring and a tunnel portal embedded ring, and arranging a reaction frame support at a shield tail of the shield machine;
secondly, assembling negative ring duct pieces, slowly pushing a main machine of the shield machine into the starting device, stopping pushing until a cutter head of the shield machine reaches an air bag, and then manually breaking a tunnel portal;
after the tunnel door is broken, pushing the cutter head of the shield machine until the cutter head contacts the tunnel face of the tunnel door to stop, then inflating the air bag, filling slag material countersink inert slurry into the starting device, and simultaneously injecting grease into the steel wire brush;
step four, building earth pressure balance in the starting device, performing pressure maintaining test on the starting device, and starting the shield machine to start normal tunneling of the tunnel boring door after the test is finished;
step five, when the tail part of the shield machine is about to be separated from the air bag, stopping tunneling the shield machine, then releasing the air bag, continuing tunneling the shield machine, when the tail part of the shield machine is completely separated from the air bag, stopping tunneling, and then inflating the air bag;
and step six, normally tunneling the shield tunneling machine, starting synchronous grouting, and finishing starting of the shield tunneling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010567381.7A CN111911170A (en) | 2020-06-19 | 2020-06-19 | Starting device of integrated shield tunneling machine and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010567381.7A CN111911170A (en) | 2020-06-19 | 2020-06-19 | Starting device of integrated shield tunneling machine and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111911170A true CN111911170A (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010567381.7A Pending CN111911170A (en) | 2020-06-19 | 2020-06-19 | Starting device of integrated shield tunneling machine and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111911170A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024016533A1 (en) * | 2022-07-19 | 2024-01-25 | 中国路桥工程有限责任公司 | General steel sleeve structure of multi-specification shield machine and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024016533A1 (en) * | 2022-07-19 | 2024-01-25 | 中国路桥工程有限责任公司 | General steel sleeve structure of multi-specification shield machine and use method thereof |
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Application publication date: 20201110 |