CN113653495A - Method and emergency device for preventing shield tail from gushing water and sand - Google Patents
Method and emergency device for preventing shield tail from gushing water and sand Download PDFInfo
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- CN113653495A CN113653495A CN202110906863.5A CN202110906863A CN113653495A CN 113653495 A CN113653495 A CN 113653495A CN 202110906863 A CN202110906863 A CN 202110906863A CN 113653495 A CN113653495 A CN 113653495A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000004576 sand Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 124
- 239000010959 steel Substances 0.000 claims abstract description 124
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 239000013013 elastic material Substances 0.000 claims abstract description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 description 14
- 238000010276 construction Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- 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 OR ROCK 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a method and an emergency device for preventing shield tail from gushing water and sand, wherein the device comprises the following components: the shield tail is a pipe piece arranged in the shield tail, a shield tail gap exists between the pipe piece and the inner wall of the shield tail, an air bag in the shield tail gap is arranged, and the air bag is made of high-molecular wear-resistant rubber plastic materials and is an arc channel steel connected with the inner wall of the shield tail and one end of the pipe piece; the outer ring wall of the arc channel steel is connected with the inner wall of the shield tail in a sealing mode through a first gasket, the arc channel steel is connected with one end of the duct piece in a sealing mode through a second gasket, and the first gasket and the second gasket are made of elastic materials; the air bag is in contact with the inner wall of the shield tail, the outer wall of the duct piece and the second gasket; the arc channel steel plugs the gap of the shield tail through the first gasket and the second gasket. Adopt emergency device can effectively avoid the casualties that the incident caused because of shield tail brush inefficacy emergence incident.
Description
Technical Field
The invention relates to the technical field of shield tunneling, in particular to a method and an emergency device for preventing shield tail from gushing water and sand.
Background
In the shield construction, often meet rich water sand bed, perhaps wear the river waters down, on the one hand because the construction vibration leads to the sand bed to take place the liquefaction, the peripheral certain within range's of shield sand is liquid form, the water content is great in the on the other hand stratum itself, consequently, can often take place the shield tail gush water gush sand and puncture extreme condition such as shield tail brush even, if this kind of condition can not obtain in time effectively the shutoff, can lead to soil and water loss rapidly around, light then arouse ground collapse, heavy then segment structure is destroyed, silt floods the tunnel. In the prior multiple cities in China, when the water-rich stratum is penetrated through in shield construction, the leakage at the tail of a shield is not effectively blocked in time, and finally, serious risk accidents of burying the shield tunnel are developed, so that irreparable personal casualties and economic losses are caused.
In summary, the following problems exist in the prior art: the problem of shield tail gushing water and sand gushing is caused under emergency, and a related feasible emergency plugging device is lacked.
Disclosure of Invention
The invention provides an emergency device for preventing shield tail from gushing water and sand, which can be used for performing feasible emergency plugging and overcoming the problem of shield tail gushing water and sand under emergency conditions.
To this end, in one aspect, the invention proposes an emergency device for preventing shield tail water and sand gushes, comprising:
the tail of the shield is provided with a tail,
a duct piece arranged inside the shield tail, wherein a shield tail gap is formed between the duct piece and the inner wall of the shield tail,
an air bag arranged in the gap of the shield tail, wherein the air bag is made of high-molecular wear-resistant rubber and plastic materials,
the arc channel steel is connected with the inner wall of the shield tail and one end of the duct piece;
the outer ring wall of the arc channel steel is connected with the inner wall of the shield tail in a sealing mode through a first gasket, the arc channel steel is connected with one end of the duct piece in a sealing mode through a second gasket, and the first gasket and the second gasket are made of elastic materials;
the air bag is in contact with the inner wall of the shield tail, the outer wall of the duct piece and the second gasket;
and the arc channel steel is used for plugging the gap of the shield tail through the first gasket and the second gasket.
Specifically, the emergency device further comprises: the shield tail is internally driven to drive the telescopic oil cylinder with the arc channel steel axially moving, and the arc channel steel is arranged between the telescopic oil cylinder and the pipe pieces.
Specifically, the length of the first gasket is greater than that of the arc channel steel.
Specifically, the arc channel steel is connected through a flange.
Specifically, the radian of the first gasket is the same as that of the arc channel steel.
Specifically, the arc channel steel is a circular ring formed by connecting 12 pieces of C-shaped steel with an angle of 30 degrees.
Specifically, a handle is arranged in the middle of the inner annular wall of the arc channel steel.
Specifically, an inflation hole is formed in one end, in contact with the duct piece, of the arc channel steel.
Specifically, the second gasket is provided with a through hole communicated with the inflation hole.
In another aspect, the present invention provides a method for preventing shield tail water gushing and sand gushing, which uses an emergency device for preventing shield tail water gushing and sand gushing, and comprises the following steps:
the method comprises the following steps: when the shield machine leaks, retracting the corresponding telescopic oil cylinder at the position of a leakage point;
step two: then the air bag is arranged in the gap of the shield tail;
step three: placing the arc channel steel between the pipe piece of the water leakage point and the telescopic oil cylinder in sequence, enabling the outer edge of the arc channel steel to abut against the inner wall of the shield tail, enabling the second gasket to be tightly attached to the pipe piece, and enabling the air hole of the air bag to be aligned to the air charging hole of the arc channel steel;
step four: the telescopic oil cylinder is extended out and the stroke of the telescopic oil cylinder is controlled, so that the arc-shaped channel steel and the second gasket are tightly pressed on the duct piece and are not deformed;
step five: the arc channel steel is sequentially installed, each arc channel steel is connected through a flange until the whole ring of arc channel steel is installed, and the air bag is inflated through the inflation hole of the arc channel steel and the inflation device.
The invention can effectively avoid the safety quality accident and the safety accident caused by the failure of the shield tail brush; economic loss caused by safety quality stories due to failure of the shield tail brush can be effectively avoided; casualties caused by safety accidents due to failure of the shield tail brush can be effectively avoided; the social negative influence caused by safety quality stories due to failure of the shield tail brush can be effectively avoided; the construction period loss caused by safety quality stories due to failure of the shield tail brush can be effectively avoided. The invention has the following beneficial effects: the shield tail leakage plugging device is small in size, easy to process and simple to operate, and improves plugging quality when the shield tail leaks.
Drawings
Fig. 1 is a schematic structural diagram of an emergency device for preventing shield tail from gushing water and sand according to an embodiment of the present invention;
fig. 2 is a schematic view of an arc channel steel connection installation structure of an emergency device for preventing shield tail from gushing water and sand according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a circular arc groove steel structure of the emergency device for preventing shield tail from gushing water and sand according to the embodiment of the invention.
The reference numbers illustrate:
1. arc channel steel; 2. a flange; 3. a handle; 4. a duct piece; 5. a shield tail; 6. an air bag; 8. a telescopic oil cylinder; 51. a first gasket; 52. a shield tail gap; 41. a second gasket.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides an emergency device for preventing shield tail from gushing water and sand, comprising:
a shield tail 5, which is cylindrical and is mainly used for shielding internal devices and sealing the tail of the shield body;
the pipe piece 4 is arranged in the shield tail 5, the pipe piece 4 is tubular, a shield tail gap 52 is formed between the pipe piece 4 and the inner wall of the shield tail 5,
the air bag 6 arranged in the shield tail gap 52 is mainly a rubber air bag, the air bag 6 is made of high-molecular wear-resistant rubber and plastic materials,
the arc channel steel 1 is connected with the inner wall of the shield tail 5 and one end of the duct piece 4;
the outer ring wall of the arc channel steel 1 is connected with the inner wall of the shield tail 5 in a sealing mode through a first gasket 51, the arc channel steel 1 is connected with one end of the duct piece 4 in a sealing mode through a second gasket 41, and the first gasket 51 and the second gasket 41 are both made of elastic materials;
the air bag 6 is in contact with the inner wall of the shield tail 5, the outer wall of the pipe piece 4 and the second gasket 41; the air bag 6 is used as a main sealing part, for example, an annular rubber air bag, the outer ring radius of the air bag is matched with the inner diameter of the shield machine, the inner ring radius of the air bag is smaller than the inner diameter of a segment of the shield machine, the inflation pressure is controlled as required, and the disassembly is convenient. The diameter of the section of the air bag is 4cm in the full state, the outer diameter of the whole ring is matched with the inner diameter of the shield tail, the inner diameter of the whole ring is matched with the outer diameter of the pipe piece, the air bag 6 can be tightly attached to the gap of the shield tail after being inflated and expanded, the inflated air bag 6 is tightly attached to the inner wall of the shield tail 5, the outer wall of the pipe piece 4 and the second gasket 41, a good sealing effect is achieved, and meanwhile the pressure of the shield tail during water gushing and sand gushing can be buffered. In addition, the inflation pressure of the air bag can be adjusted at will according to stratum change and grouting pressure, even if the gap between the shield tails changes, the gas in the air bag can be automatically adjusted, the sealing reliability is improved, the air bag is made of high-molecular wear-resistant rubber and plastic materials, the elasticity is good, the service life is long, and the sealing effect is safe and reliable.
The arc channel steel 1 seals the shield tail gap 52 through the first gasket 51 and the second gasket 41.
The arc channel steel 1 is connected with the inner wall of the shield tail 5 and one end of the duct piece 4, the arc channel steel 1 is made of C-shaped steel, the outer annular wall of the arc channel steel 1 is connected with the inner wall of the shield tail 5 in a sealing mode through a first gasket 51, and the side face of the arc channel steel 1 is connected with one end of the duct piece 4 in a sealing mode through a second gasket 41. The arc channel steel (arc channel steel) can adapt to the larger axial force generated by the extrusion of the cylinder, the first gasket 51 and the second gasket 41 can play a good role of buffering as elastic sealing gaskets, and the first gasket 51 and the second gasket 41 adopt the elastic sealing gaskets of the D-Qing-Dynasty.
The emergency device further comprises: the shield tail 5 is internally driven to drive the telescopic oil cylinder 8 of the arc channel steel 1, and the arc channel steel 1 is arranged between the telescopic oil cylinder 8 and the duct piece 4. Placing the arc-shaped channel steel (arc-shaped channel steel 1) between the pipe piece and the oil cylinder at the water leakage point in sequence, enabling the outer edge of the arc-shaped channel steel to abut against the inner wall of the shield tail, and enabling the buffer sealing layer to be tightly attached to the pipe piece;
the length of the first gasket 51 is greater than that of the arc channel steel 1. The two side edges all exceed the circular arc-shaped channel steel, and when the circular arc-shaped channel steel is assembled, the exceeding parts can be sequentially overlapped, so that the leakage of the joint is avoided, and the sealing effect is reinforced.
The arc channel steel 1 is connected through a flange 2. Connect with the flange between every, improve the wholeness of circular arc channel-section steel, finish until the installation of whole ring circular arc channel-section steel, as shown in fig. 2, a ring is constituteed to polylith circular arc channel-section steel 1, and every circular arc channel-section steel 1 is alpha for the radian, and alpha is 20 to 30, for example for 20 or 30, in this application, can be by 12 radians for 30 circular arc channel-section steels 1 formation whole rings to realize that circumference seals. The size of the arc-shaped channel steel can be adjusted according to the inner diameter of the shield tail, the central angle of each component block can be divided into different styles of 30 degrees, 20 degrees and the like according to actual conditions, good water stopping effect is guaranteed, and meanwhile the method is light and easy to install, simple in structure and good in sealing effect.
The radian of the first gasket 51 is the same as that of the arc channel steel 1. Can be attached and has good sealing effect.
The length of the first gasket 51 beyond the two sides of the arc channel steel 1 is 50 mm. The shield tail can be sealed.
As shown in fig. 3, a handle 3 is arranged in the middle of the inner annular wall of the arc channel steel 1. In order to facilitate the disassembly of the arc-shaped channel steel, a handle is arranged on one side close to the circle center. The handle adopts 4mmHPB300, and has good weldability and mechanical property.
And an inflation hole is formed at one end of the arc channel steel 1, which is in contact with the duct piece 4.
The second gasket 41 is provided with a through hole communicating with the inflation hole. The air bag is connected with an inflating device for inflating through a reserved inflating hole of the arc-shaped channel steel to control the inflating pressure;
the air bag 6 is connected with an inflating device through the inflating hole. The air bag is used as a main sealing part, the inflation pressure can be controlled according to the requirement, and the disassembly is convenient.
The invention also provides a method for preventing shield tail water gushing and sand gushing, which adopts an emergency device for preventing shield tail water gushing and sand gushing, and comprises the following steps:
the method comprises the following steps: when the shield machine leaks, retracting the corresponding telescopic oil cylinder 8 at the position of a leakage point;
step two: then the air bag 6 is arranged in the gap of the shield tail;
step three: placing the arc channel steel 1 between the pipe piece 4 at the water leakage point and the telescopic oil cylinder in sequence, enabling the outer edge of the arc channel steel to abut against the inner wall of the shield tail, enabling the second gasket 41 to be tightly attached to the pipe piece, and enabling the air hole of the air bag to be aligned to the air charging hole of the arc channel steel;
step four: the telescopic oil cylinder is extended out and the stroke of the telescopic oil cylinder is controlled, so that the arc-shaped channel steel and the second gasket are tightly pressed on the duct piece and are not deformed;
step five: the arc channel steel is sequentially installed, each arc channel steel is connected through the flange 2 until the installation of the whole ring of arc channel steel is finished, and the air bag is inflated through the inflation hole of the arc channel steel and the inflation device.
The invention can effectively and timely plug the large-scale water inrush and sand inrush of the shield tail under emergency, and fills the blank of the field, thereby improving the safety of shield construction. The invention has good anti-seepage effect, easy processing, simple operation and low cost, and can be widely applied to shield construction engineering. The invention can effectively avoid the safety quality accident and the safety accident caused by the failure of the shield tail brush; economic loss caused by safety quality stories due to failure of the shield tail brush can be effectively avoided; casualties caused by safety accidents due to failure of the shield tail brush can be effectively avoided; the social negative influence caused by safety quality stories due to failure of the shield tail brush can be effectively avoided; the construction period loss caused by safety quality stories due to failure of the shield tail brush can be effectively avoided. The invention also has the following beneficial effects: the shield tail leakage plugging device is small in size, easy to process and simple to operate, and improves plugging quality when the shield tail leaks.
Example 1:
the invention provides an emergency device for preventing shield tail from gushing water and sand, as shown in figure 1, the invention adopts the following technical scheme:
the utility model provides a prevent that shield tail gushes water and gushes husky circular arc shape channel-section steel, includes: stressed portion and sealing portion
(1) The stressed part mainly comprises an arc-shaped channel steel (arc-shaped channel steel) and a connecting flange. And each block is connected by a flange, so that the integrity of the arc-shaped channel steel is improved until the installation of the whole ring of the arc-shaped channel steel is finished.
(2) The sealing part mainly comprises an air bag and sealing rubber, and the sealing rubber comprises: a first shim 51 and a second shim 41.
The inner side of the arc-shaped channel steel, which is close to the circle center, is provided with a handle which is convenient to assemble and disassemble.
The stress part and the sealing part are both arc-shaped, the size and the size of the stress part and the size of the sealing part are mutually attached, the radius of the stress part is matched with the inner diameter of a tail shield of the shield tunneling machine, the arc-shaped channel steel is used as the stress part, an elastic sealing gasket is pasted on one side of the arc-shaped channel steel, and the pasting length of the elastic sealing gasket exceeds the two sides of the arc-shaped channel steel. Circular arc shape channel-section steel can adapt to the great axial force that the hydro-cylinder extrusion produced, and elastic seal gasket can play fine cushioning effect, and both sides reason all surpass circular arc shape channel-section steel, when circular arc shape channel-section steel is assembled, surpass the part and can superpose in proper order, avoid the seam crossing seepage, consolidate sealed effect. The rubber air bag is used as a main sealing part, the inflation pressure can be controlled according to the requirement, and the disassembly is convenient. The air bag in the sealing part is placed in a gap between the shield tail and the duct piece, and the air nozzle is connected with the air charging device through an opening of the circular-arc-shaped channel steel.
The size of the arc-shaped channel steel can be adjusted according to the inner diameter of the shield tail, the central angle of each component block can be divided into different styles of 30 degrees, 20 degrees and the like according to actual conditions, good water stopping effect is guaranteed, and meanwhile the method is light and easy to install, simple in structure and good in sealing effect.
The emergency device comprises the following steps:
the method comprises the following steps: when the shield machine leaks, retracting the corresponding oil cylinder at the position of a leakage point;
step two: a steel wire ball (or a cotton quilt) which is fully coated with sealing grease is inserted into a leakage part in advance for preliminary water stop, then the air bag is arranged in a gap of the shield tail, and an inflation hole is reserved to be aligned with the opening position of the steel ring;
step three: placing the arc-shaped channel steel between the pipe piece and the oil cylinder at the water leakage point in sequence, enabling the outer edge of the arc-shaped channel steel to abut against the inner wall of the shield tail, and enabling the buffer sealing layer to be tightly attached to the pipe piece;
step four: extending out the oil cylinder and controlling the stroke of the oil cylinder to ensure that the arc-shaped channel steel and the sealing gasket are tightly pressed on the duct piece and are not deformed;
step four: the other parts are sequentially installed according to the steps, and simultaneously, each part is connected through a flange, so that the integrity of the arc-shaped channel steel is improved, until the whole ring of the arc-shaped channel steel is installed, the air bag is connected with an inflating device through a reserved opening of the arc-shaped channel steel for inflating, and the inflating pressure is controlled;
step five: sealing the shield tail through a shield tail synchronous grouting system, a grease injection system and a secondary grouting system;
step six: and after the shield tail water gushing and sand gushing are completely blocked, the oil cylinders are retracted in sequence, and the device is disassembled in the reverse sequence.
When the shield tail generates water burst and sand burst, a steel wire ball (or a cotton quilt) which is fully coated with grease is immediately plugged into the gap of the shield tail, so that the water burst and sand burst pressure is relieved, and meanwhile, the air bag is convenient to put into the air bag subsequently. The arc-shaped channel steel is used as a stress part and is extruded by the bearing oil cylinder, so that a good sealing effect is achieved at the joint of the arc-shaped channel steel and the segment.
Example 2:
the invention provides an emergency device for preventing shield tail from gushing water and sand, which comprises: circular arc channel-section steel, as shown in fig. 3, a prevent that shield tail gushes water and gushes sand's circular arc channel-section steel, in this embodiment, the atress part is arc with sealing part, the outer loop radius of channel-section steel is unanimous with the shield tail internal diameter, seal gasket pastes the one side that is close to shield tail and section of jurisdiction at circular arc channel-section steel, and contact with shield tail inner wall and section of jurisdiction, can make the shield tail sealed, will surpass circular arc channel-section steel both sides 50mm when seal gasket pastes, when installing circular arc channel-section steel in proper order, the seal gasket stack of the seal gasket of two adjacent channel-section steels and another channel-section steel, play at seam crossing and strengthen sealed effect.
The arc-shaped channel steel serving as a main stressed part is provided with a handle which is convenient to assemble and disassemble at the inner side. In order to make the circular arc channel-section steel dismantle conveniently, set up the handle in the one side that is close to the centre of a circle, in this embodiment, the handle adopts 4mmHPB300, has good weldability and mechanicalness.
The invention can effectively avoid the safety quality accident and the safety accident caused by the failure of the shield tail brush; economic loss caused by safety quality stories due to failure of the shield tail brush can be effectively avoided; casualties caused by safety accidents due to failure of the shield tail brush can be effectively avoided; the social negative influence caused by safety quality stories due to failure of the shield tail brush can be effectively avoided; the construction period loss caused by safety quality stories due to failure of the shield tail brush can be effectively avoided. The invention also has the following beneficial effects: the shield tail leakage plugging device is small in size, easy to process and simple to operate, and improves plugging quality when the shield tail leaks.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. In order that the components of the present invention may be combined without conflict, it is intended that all equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides an emergency device for preventing shield tail gushes water and gushes sand, its characterized in that includes:
a shield tail (5),
a duct piece (4) arranged inside the shield tail (5), a shield tail gap (52) is formed between the duct piece (4) and the inner wall of the shield tail (5),
an air bag (6) arranged in the shield tail gap (52), wherein the air bag (6) is made of high-molecular wear-resistant rubber and plastic materials,
and the arc channel steel (1) is connected with the inner wall of the shield tail (5) and one end of the duct piece (4);
the outer ring wall of the arc channel steel (1) is connected with the inner wall of the shield tail (5) in a sealing mode through a first gasket (51), the arc channel steel (1) is connected with one end of the duct piece (4) in a sealing mode through a second gasket (41), and the first gasket (51) and the second gasket (41) are made of elastic materials;
the air bag (6) is in contact with the inner wall of the shield tail (5), the outer wall of the pipe piece (4) and the second gasket (41);
the arc channel steel (1) seals the shield tail gap (52) through the first gasket (51) and the second gasket (41).
2. The emergency device for preventing shield tail flooding and sand inrush of claim 1, further comprising: the shield tail (5) is internally driven to drive the telescopic oil cylinder (8) of the arc channel steel (1) to move axially, and the arc channel steel (1) is arranged between the telescopic oil cylinder (8) and the duct piece (4).
3. The emergency device for preventing shield tail water and sand gushing according to claim 1, characterized in that the length of the first spacer (51) is greater than the length of the arc channel steel (1).
4. The emergency device for preventing shield tail from gushing water and sand is characterized in that the arc channel steel (1) is connected with each other through a flange (2).
5. An emergency device for preventing shield tail flooding and sand gushing according to claim 3, characterized in that the arc of the first washer (51) is the same as the arc of the arc channel steel (1).
6. The emergency device for preventing shield tail from gushing water and sand is characterized in that the arc channel steel (1) is a circular ring formed by connecting 12 pieces of C-shaped steel with an angle of 30 degrees.
7. The emergency device for preventing shield tail from gushing water and sand as claimed in claim 1, wherein the middle part of the inner ring wall of the circular arc channel steel (1) is provided with a handle (3).
8. The low carbon steel tundish structure of a slab caster according to claim 1, wherein an air charging hole is provided at one end of the arc channel steel (1) contacting the segment (4).
9. An emergency device for preventing shield tail flooding and sand gushing according to claim 8, characterized in that said second gasket (41) is provided with a through hole communicating with said inflation hole.
10. A method for preventing shield tail water and sand gushing, which is characterized in that the emergency device for preventing shield tail water and sand gushing of any one of claims 1 to 9 is adopted, and the method for preventing shield tail water and sand gushing comprises the following steps:
the method comprises the following steps: when the shield machine leaks, the corresponding telescopic oil cylinder (8) is retracted at the position of a leakage point;
step two: then the air bag (6) is arranged in the shield tail gap (52);
step three: placing the arc channel steel (1) between a pipe piece (4) at a water leakage point and the telescopic oil cylinder (8) in sequence, enabling the outer edge of the arc channel steel (1) to abut against the inner wall of the shield tail (5), enabling a second gasket (41) to be tightly attached to the pipe piece (4), and enabling the air hole of the air bag (6) to be aligned to the air inflation hole of the arc channel steel (1);
step four: the telescopic oil cylinder (8) is extended out, the stroke of the telescopic oil cylinder (8) is controlled, and the arc channel steel (1) and the second gasket (41) are pressed on the duct piece (4) and are not deformed;
step five: the arc channel steel (1) is installed in sequence, every arc channel steel (1) is connected through a flange (2), until the whole ring of arc channel steel (1) is installed, the air bag (6) is inflated through an inflation hole connection inflation device of the arc channel steel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110906863.5A CN113653495B (en) | 2021-08-09 | 2021-08-09 | Method and emergency device for preventing water and sand from rushing from shield tail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110906863.5A CN113653495B (en) | 2021-08-09 | 2021-08-09 | Method and emergency device for preventing water and sand from rushing from shield tail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113653495A true CN113653495A (en) | 2021-11-16 |
| CN113653495B CN113653495B (en) | 2024-04-30 |
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| BE792629A (en) * | 1971-12-13 | 1973-03-30 | Nat Res Dev | IMPROVEMENTS TO GASKET SYSTEMS |
| US3979920A (en) * | 1971-12-13 | 1976-09-14 | National Research Development Corporation | Sealing means |
| US4139989A (en) * | 1976-07-29 | 1979-02-20 | Edmund Nuttall Limited | Seals for tunnelling shields |
| CN102562081A (en) * | 2012-03-15 | 2012-07-11 | 中交天和机械设备制造有限公司 | Shield tail sealing device for shield machine |
| CN105019910A (en) * | 2015-07-27 | 2015-11-04 | 北京市市政四建设工程有限责任公司 | Shield tail sealing device and shield tunneling machine |
| CN105065008A (en) * | 2015-07-30 | 2015-11-18 | 中国建筑第六工程局有限公司 | Method for preventing sand gushing in shield tunneling construction |
| CN110593882A (en) * | 2019-09-23 | 2019-12-20 | 中建八局轨道交通建设有限公司 | Inflatable shield tail sealing device |
| CN210948678U (en) * | 2019-12-04 | 2020-07-07 | 中铁十二局集团第二工程有限公司 | Shield constructs quick-witted shield tail clearance gushes water and gushes sand plugging device |
| CN113153325A (en) * | 2021-04-08 | 2021-07-23 | 中建八局轨道交通建设有限公司 | Emergency danger avoiding air bag system used between shield tail brushes and emergency danger avoiding method thereof |
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2021
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE792629A (en) * | 1971-12-13 | 1973-03-30 | Nat Res Dev | IMPROVEMENTS TO GASKET SYSTEMS |
| US3979920A (en) * | 1971-12-13 | 1976-09-14 | National Research Development Corporation | Sealing means |
| US4139989A (en) * | 1976-07-29 | 1979-02-20 | Edmund Nuttall Limited | Seals for tunnelling shields |
| CN102562081A (en) * | 2012-03-15 | 2012-07-11 | 中交天和机械设备制造有限公司 | Shield tail sealing device for shield machine |
| CN105019910A (en) * | 2015-07-27 | 2015-11-04 | 北京市市政四建设工程有限责任公司 | Shield tail sealing device and shield tunneling machine |
| CN105065008A (en) * | 2015-07-30 | 2015-11-18 | 中国建筑第六工程局有限公司 | Method for preventing sand gushing in shield tunneling construction |
| CN110593882A (en) * | 2019-09-23 | 2019-12-20 | 中建八局轨道交通建设有限公司 | Inflatable shield tail sealing device |
| CN210948678U (en) * | 2019-12-04 | 2020-07-07 | 中铁十二局集团第二工程有限公司 | Shield constructs quick-witted shield tail clearance gushes water and gushes sand plugging device |
| CN113153325A (en) * | 2021-04-08 | 2021-07-23 | 中建八局轨道交通建设有限公司 | Emergency danger avoiding air bag system used between shield tail brushes and emergency danger avoiding method thereof |
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| CN113653495B (en) | 2024-04-30 |
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