CN215979376U - Emergency device for preventing shield tail from gushing water and sand - Google Patents
Emergency device for preventing shield tail from gushing water and sand Download PDFInfo
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- CN215979376U CN215979376U CN202121843517.9U CN202121843517U CN215979376U CN 215979376 U CN215979376 U CN 215979376U CN 202121843517 U CN202121843517 U CN 202121843517U CN 215979376 U CN215979376 U CN 215979376U
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Abstract
The utility model provides an emergency device for preventing shield tail from gushing water and sand, which comprises: a shield tail (5); the duct piece (4) is arranged inside the shield tail (5), and a shield tail gap (52) exists between the duct piece (4) and the inner wall of the shield tail (5); an airbag (6) arranged in the shield tail gap (52); 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 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), the length of the first gasket (51) is larger than that of the arc channel steel (1), and the arc channel steel (1) is connected with one end of the duct piece (4) in a sealing mode through a second gasket (41). Adopt emergency device can effectively avoid the casualties that the incident caused because of shield tail brush inefficacy emergence incident, also can effectively avoid causing the time limit for a project loss because of shield tail brush inefficacy causes the security quality story.
Description
Technical Field
The utility model relates to the technical field of shield tunneling, in particular to 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.
SUMMERY OF THE UTILITY MODEL
The utility model 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, the utility model proposes an emergency device for preventing shield tail from gushing water and sand, comprising:
a shield tail;
the duct piece is arranged inside the shield tail, and a shield tail gap exists between the duct piece and the inner wall of the shield tail;
the air bag is arranged in the shield tail gap;
and the arc channel steel is connected with the inner wall of the shield tail and one end of the duct piece, the outer annular wall of the arc channel steel is connected with the inner wall of the shield tail through a first gasket in a sealing mode, and the arc channel steel is connected with one end of the duct piece through a second gasket in a sealing mode.
Specifically, the emergency device further comprises: the shield tail is internally driven, the arc channel steel is arranged on the telescopic oil cylinder, and the arc channel steel is arranged between the telescopic oil cylinder and the duct 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 length of the first gasket beyond the two sides of the arc channel steel is 50 mm.
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.
Specifically, the airbag is connected with an inflating device through the inflating hole.
The utility model 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 utility model 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 utility model.
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 inside the shield tail 5, the pipe piece 4 is tubular, and a shield tail gap 52 is formed between the pipe piece 4 and the inner wall of the shield tail 5;
an airbag 6 disposed in the shield tail gap 52; 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 gasbag cross-section diameter is 4cm under full state, the whole ring external diameter matches with the shield tail internal diameter, the whole ring internal diameter matches with the section of jurisdiction external diameter, for example, for ring shape rubber air bag, the outer ring radius of gasbag matches with the shield structure built-in diameter, the inner ring radius of gasbag is less than the internal diameter of shield structure machine section of jurisdiction, aerify the inflation back, can hug closely with the shield tail clearance, the gasbag 6 after aerifing is with the inner wall of shield tail 5, the outer wall and the second gasket 41 of section of jurisdiction 4 are all laminated closely, reach better sealed effect, the pressure when can cushion the shield tail gushing water simultaneously and gush sand. 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 shield tail structure comprises an arc channel steel 1 connected with the inner wall of a shield tail 5 and one end of a duct piece 4, wherein 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 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-shaped channel steel (arc-shaped channel steel) can adapt to larger axial force generated by the extrusion of the oil cylinder, and the first gasket 51 and the second gasket 41 can play a good buffering role as elastic sealing gaskets.
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.
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 utility model 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 utility model has good anti-seepage effect, easy processing, simple operation and low cost, and can be widely applied to shield construction engineering.
Example 1:
the utility model provides an emergency device for preventing shield tail from gushing water and sand, as shown in figure 1, the utility model 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 utility model 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 utility model 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 utility model 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);
the duct piece (4) is arranged inside the shield tail (5), and a shield tail gap (52) exists between the duct piece (4) and the inner wall of the shield tail (5);
an airbag (6) arranged in the shield tail gap (52);
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 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 arc channel steel (1) is connected with one end of the duct piece (4) in a sealing mode through a 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 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).
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 as claimed in claim 1, wherein the length of the first gasket (51) beyond the two sides of the arc channel steel (1) is 50 mm.
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 emergency device for preventing shield tail from gushing water and sand is characterized in that an air inflation hole is formed at one end of the arc channel steel (1) which is in contact with the pipe piece (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. An emergency device for preventing shield tail flooding and sand gushing according to claim 9, characterized in that the air bag (6) is connected with the inflation device through the inflation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121843517.9U CN215979376U (en) | 2021-08-09 | 2021-08-09 | Emergency device for preventing shield tail from gushing water and sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121843517.9U CN215979376U (en) | 2021-08-09 | 2021-08-09 | Emergency device for preventing shield tail from gushing water and sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215979376U true CN215979376U (en) | 2022-03-08 |
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ID=80514398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121843517.9U Active CN215979376U (en) | 2021-08-09 | 2021-08-09 | Emergency device for preventing shield tail from gushing water and sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215979376U (en) |
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2021
- 2021-08-09 CN CN202121843517.9U patent/CN215979376U/en active Active
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