CN113653495B - Method and emergency device for preventing water and sand from rushing from shield tail - Google Patents
Method and emergency device for preventing water and sand from rushing from shield tail Download PDFInfo
- Publication number
- CN113653495B CN113653495B CN202110906863.5A CN202110906863A CN113653495B CN 113653495 B CN113653495 B CN 113653495B CN 202110906863 A CN202110906863 A CN 202110906863A CN 113653495 B CN113653495 B CN 113653495B
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- channel steel
- shield
- gasket
- tail
- arc channel
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000004576 sand Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 125
- 239000010959 steel Substances 0.000 claims abstract description 125
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 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
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 13
- 238000010276 construction Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 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
- 239000002689 soil Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a method and an emergency device for preventing water and sand from rushing from the tail of a shield, wherein the device comprises the following steps: the shield tail is arranged in a duct piece in the shield tail, a shield tail gap is formed between the duct 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 material and arc channel steel 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 in sealing connection with the inner wall of the shield tail through a first gasket, the arc channel steel is in sealing connection with one end of the duct piece through a second gasket, and the first gasket and the second gasket are made of elastic materials; the air bag is contacted 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 shield tail gap through the first gasket and the second gasket. By adopting the emergency device, the casualties caused by the safety accidents caused by the failure of the shield tail brush can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of shields, in particular to a method and an emergency device for preventing water and sand from rushing from the tail of a shield.
Background
In shield construction, a water-rich sand layer is frequently encountered, or a river water area is penetrated downwards, on one hand, because construction vibration leads to liquefaction of the sand layer, sand in a certain range around the shield is in a liquid state, and on the other hand, the water content in the stratum is relatively large, so that extreme conditions such as water gushing and sand gushing at the tail of the shield and even breakdown of a shield tail brush and the like frequently occur, if the conditions cannot be obtained, the situation can be effectively plugged at the time, surrounding water and soil are quickly lost, the ground collapse is caused if the situation is light, the segment structure is destroyed, and the sand floods a tunnel. At home, a plurality of cities are effectively plugged due to the fact that leakage at the tail of a shield is not timely and effectively carried out when the water-rich stratum is traversed in shield construction, and finally serious risk accidents of the shield tunnel being buried are evolved, so that irrecoverable personal casualties and economic losses are caused.
In summary, the following problems exist in the prior art: the problem of water and sand gushing from the tail of the shield is caused under the emergency condition, and a related feasible emergency plugging device is lacked.
Disclosure of Invention
The invention provides an emergency device for preventing water and sand from rushing out of the tail of a shield, which can carry out feasible emergency blocking and solve the problem of water and sand rushing out of the tail of the shield under emergency.
To this end, in one aspect, the invention proposes an emergency device for preventing the tail of a shield from surging water and sand, comprising:
The tail of the shield is provided with a plurality of holes,
The duct piece is arranged in the shield tail, a shield tail gap exists between the duct piece and the inner wall of the shield tail,
An air bag arranged in the shield tail gap, wherein the air bag is made of high molecular wear-resistant rubber plastic material,
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 in sealing connection with the inner wall of the shield tail through a first gasket, the arc channel steel is in sealing connection with one end of the duct piece through a second gasket, and the first gasket and the second gasket are made of elastic materials;
The air bag is contacted with the inner wall of the shield tail, the outer wall of the duct piece and the second gasket;
The arc channel steel is used for plugging the shield tail gap through the first gasket and the second gasket.
Specifically, the emergency device further includes: the telescopic oil cylinder is arranged in the shield tail and used for driving the arc channel steel to axially move, and the arc channel steel is arranged between the telescopic oil cylinder and the duct piece.
Specifically, the length of the first gasket is greater than the length 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 circular arc channel steel is formed by connecting 12C-shaped steel with an angle of 30 degrees.
Specifically, the middle part of the inner annular wall of the arc channel steel is provided with a handle.
Specifically, the end of the arc channel steel, which is in contact with the duct piece, is provided with an air charging hole.
Specifically, the second gasket is provided with a through hole communicated with the inflation hole.
In another aspect, the invention provides a method for preventing water and sand from surging the tail of a shield, which adopts an emergency device for preventing water and sand from surging the tail of the shield, and the method for preventing water and sand from surging the tail of the shield comprises the following steps:
step one: when the shield tunneling machine leaks, the corresponding telescopic oil cylinder is retracted at the position of the leakage point;
Step two: then the air bag is arranged in the shield tail gap;
Step three: sequentially placing the arc channel steel between the pipe piece of the water leakage point and the telescopic oil cylinder, enabling the outer edge of the arc channel steel to prop against the inner wall of the shield tail, enabling the second gasket to cling to the pipe piece, and enabling the air hole of the air bag to be aligned with the air charging hole of the arc channel steel;
Step four: extending out of the telescopic cylinder and controlling the stroke of the telescopic cylinder to enable the arc channel steel and the second gasket to be tightly pressed against the duct piece and not to deform;
step five: the arc channel steel is sequentially installed, each arc channel steel is connected through a flange, and the air bags are inflated through the inflation holes of the arc channel steel connected with the inflation device until the whole ring of arc channel steel is installed.
The invention can effectively avoid the safety quality accident and the safety accident caused by the failure of the shield tail brush; the economic loss caused by the safe quality story due to failure of the shield tail brush can be effectively avoided; the casualties caused by safety accidents due to failure of the shield tail brush can be effectively avoided; the social negative influence caused by the safe quality story due to failure of the shield tail brush can be effectively avoided; the construction period loss caused by the safe quality story due to failure of the shield tail brush can be effectively avoided. The invention has the following beneficial effects: the device has the advantages of small volume, easy processing and simple operation, and improves the plugging quality when the shield tail leaks.
Drawings
FIG. 1 is a schematic structural view of an emergency device for preventing water and sand from rushing from the tail of a shield according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a circular arc channel steel connection installation structure of an emergency device for preventing water and sand from surging a shield tail, which is provided by the embodiment of the invention;
Fig. 3 is a schematic structural view of arc channel steel of an emergency device for preventing water and sand from surging a shield tail according to an embodiment of the invention.
Reference numerals illustrate:
1. Arc channel steel; 2. a flange; 3. a handle; 4. a segment; 5. a shield tail; 6. an air bag; 8. a telescopic oil cylinder; 51. a first gasket; 52. shield tail clearance; 41. and a second gasket.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the present invention proposes an emergency device for preventing water and sand from surging the tail of a shield, comprising:
The shield tail 5 is cylindrical and is mainly used for shielding internal devices and sealing the tail of the shield body;
The duct piece 4 is arranged in the shield tail 5, the duct piece 4 is tubular, a shield tail gap 52 exists between the duct 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 plastic material,
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 in sealing connection with the inner wall of the shield tail 5 through a first gasket 51, the arc channel steel 1 is in sealing connection with one end of the duct piece 4 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 contacted with the inner wall of the shield tail 5, the outer wall of the duct piece 4 and the second gasket 41; the air bag 6 is used as a main sealing part, for example, a circular 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 the segment of the shield machine, the inflation pressure is controlled according to the requirement, and the disassembly is convenient. The diameter of the section of the air bag is 4cm under 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 duct piece, after the air bag 6 is inflated, the air bag can be tightly clung to the gap of the shield tail, the inflated air bag 6 is tightly attached to the inner wall of the shield tail 5, the outer wall of the duct piece 4 and the second gasket 41, a good sealing effect is achieved, and meanwhile, the pressure of the shield tail during water 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 shield tail gap is changed, 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 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 in sealing connection with the inner wall of the shield tail 5 through a first gasket 51, and the side face of the arc channel steel 1 is in sealing connection with one end of the duct piece 4 through a second gasket 41. The arc-shaped channel steel (arc channel steel) can adapt to larger axial force generated by extrusion of the oil cylinder, the first gasket 51 and the second gasket 41 can play a good role in buffering as elastic sealing gaskets, and the first gasket 51 and the second gasket 41 adopt Ding cork elastic sealing gaskets.
The emergency device further comprises: the telescopic oil cylinder 8 is arranged in the shield tail 5 and used for driving the arc channel steel 1, and the arc channel steel 1 is arranged between the telescopic oil cylinder 8 and the duct piece 4. Sequentially placing arc-shaped channel steel (arc-shaped channel steel 1) between the pipe piece at the water leakage point and the oil cylinder, enabling the outer edge of the arc-shaped channel steel to prop against the inner wall of the shield tail, and enabling the buffer sealing layer to be clung to the pipe piece;
The length of the first spacer 51 is greater than the length of the arc channel steel 1. The two side edges are beyond the arc-shaped channel steel, when the arc-shaped channel steel is assembled, the exceeding parts can be overlapped in sequence, so that leakage at the joint is avoided, and the sealing effect is reinforced.
The arc channel steel 1 is connected through a flange 2. The arc-shaped channel steel is connected by flanges, the integrity of the arc-shaped channel steel is improved until the whole ring of the arc-shaped channel steel is installed, as shown in fig. 2, a plurality of arc-shaped channel steel 1 form a circular ring, each arc-shaped channel steel 1 has an radian alpha of 20-30 degrees, for example 20-30 degrees, and in the application, an integral circular ring can be formed by 12 arc-shaped channel steel 1 with the radian of 30 degrees so as to realize circumferential sealing. The size of the circular arc-shaped channel steel can be adjusted according to the inner diameter of the shield tail, the central angles of all the component blocks can be divided into different modes of 30 degrees, 20 degrees and the like according to actual conditions, the circular arc-shaped channel steel is light and easy to install while ensuring good water stopping effect, and the method is 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 50mm. 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 circular arc-shaped channel steel, a handle is arranged on one side close to the circle center. The handle adopts 4mmHPB300,300, has good weldability and mechanical property.
And an air charging 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 to inflate through a reserved inflating hole of the arc-shaped channel steel, and inflating pressure is controlled;
The airbag 6 is connected with an inflator through the inflation hole. The gasbag is as main sealing part, can control the inflation pressure as required, and it is convenient to dismantle.
The invention also provides a method for preventing the water and sand from surging the tail of the shield, which adopts an emergency device for preventing the water and sand from surging the tail of the shield, and the method for preventing the water and sand from surging the tail of the shield comprises the following steps:
step one: when the shield tunneling machine leaks, the corresponding telescopic oil cylinder 8 is retracted at the position of the leakage point;
step two: then the air bag 6 is arranged in the shield tail gap;
Step three: the arc channel steel 1 is sequentially arranged between the duct piece 4 of the water leakage point and the telescopic oil cylinder, so that the outer edge of the arc channel steel props against the inner wall of the shield tail, the second gasket 41 is tightly attached to the duct piece, and the air hole of the air bag is aligned with the air charging hole of the arc channel steel;
Step four: extending out of the telescopic cylinder and controlling the stroke of the telescopic cylinder to enable the arc channel steel and the second gasket to be tightly pressed against the duct piece and not to deform;
Step five: the arc channel steel is sequentially installed, each arc channel steel is connected through a flange 2 until the whole ring of arc channel steel is installed, and the air bags are inflated through the inflation holes of the arc channel steel and the inflation device.
The invention can effectively and timely block large-scale water and sand gushes at the tail of the shield under emergency, fills up the blank in the field, and improves the safety of shield construction. The invention has good seepage-proofing effect, easy processing, simple and convenient 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; the economic loss caused by the safe quality story due to failure of the shield tail brush can be effectively avoided; the casualties caused by safety accidents due to failure of the shield tail brush can be effectively avoided; the social negative influence caused by the safe quality story due to failure of the shield tail brush can be effectively avoided; the construction period loss caused by the safe quality story due to failure of the shield tail brush can be effectively avoided. The invention also has the following beneficial effects: the device has the advantages of small volume, easy processing and simple operation, and improves the plugging quality when the shield tail leaks.
Example 1:
The invention provides an emergency device for preventing water and sand from rushing from the tail of a shield, which adopts the following technical scheme as shown in figure 1:
Arc-shaped channel steel for preventing sand from being gushed by shield tail water, comprising: force receiving portion and sealing portion
(1) The stress part is mainly arc-shaped channel steel (arc channel steel) and a connecting flange. And each block is connected by a flange, so that the integrity of the circular arc-shaped channel steel is improved until the circular arc-shaped channel steel is completely installed.
(2) The sealing part is mainly an air bag and sealing rubber, and the sealing rubber comprises: a first spacer 51 and a second spacer 41.
The inner side of the circular arc-shaped channel steel, which is close to the center of the circle, is provided with a handle which is convenient to assemble and disassemble.
The stress part and the sealing part are arc-shaped, the size and the dimension are mutually attached, the radius is matched with the inner diameter of the tail shield of the shield machine, the arc-shaped channel steel is used as the stress part, the elastic sealing gasket is stuck on one side of the arc-shaped channel steel, and the sticking length of the elastic sealing gasket exceeds the two sides of the arc-shaped channel steel. The arc-shaped channel steel can adapt to larger axial force generated by extrusion of the oil cylinder, the elastic sealing gasket can play a good role in buffering, two side edges of the elastic sealing gasket exceed the arc-shaped channel steel, and when the arc-shaped channel steel is assembled, the exceeding parts can be sequentially overlapped, so that leakage of joints is avoided, and the sealing effect is enhanced. The rubber air bag is used as a main sealing part, so that the inflation pressure can be controlled as required, and the disassembly is convenient. The air bag in the sealing part is placed in the gap between the shield tail and the duct piece, and the air tap is connected with the air charging device through the arc-shaped channel steel opening.
The size of the circular arc-shaped channel steel can be adjusted according to the inner diameter of the shield tail, the central angles of all the component blocks can be divided into different modes of 30 degrees, 20 degrees and the like according to actual conditions, the circular arc-shaped channel steel is light and easy to install while ensuring good water stopping effect, and the method is simple in structure and good in sealing effect.
The specific application of the emergency device comprises the following steps:
Step one: when the shield machine leaks, the corresponding oil cylinder is retracted at the position of the leakage point;
step two: pre-plugging steel wire balls (cotton quilts can also be used) fully coated with sealing grease into the leakage part to preliminarily stop water, then installing an air bag into a shield tail gap, and reserving an inflation hole to align to the opening position of the steel ring;
step three: sequentially placing the circular arc-shaped channel steel between the pipe piece at the water leakage point and the oil cylinder, enabling the outer edge of the circular arc-shaped channel steel to prop against the inner wall of the shield tail, and enabling the buffer sealing layer to be clung to the pipe piece;
Step four: the cylinder is extended out, the stroke of the cylinder is controlled, and 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, meanwhile, each part is connected by a flange, the integrity of the circular arc-shaped channel steel is improved until the whole ring of the circular arc-shaped channel steel is installed, and the air bag is connected with the air charging device to charge air through the reserved opening of the circular arc-shaped channel steel, so that the air charging pressure is controlled;
step five: the shield tail is sealed by the secondary grouting system through the shield tail synchronous grouting system and the grease injection system;
step six: after the water and sand gushing from the tail of the shield are completely blocked, the oil cylinders are sequentially retracted, and the device is removed in the reverse order.
When water and sand gushing occurs at the tail of the shield, steel wire balls (cotton quilts can also be filled) fully coated with grease are immediately stuffed in the gap of the tail of the shield, so that the water and sand gushing pressure is relieved, and meanwhile, the subsequent air bags are conveniently put in. The arc-shaped channel steel is used as a stress part, and the joint of the arc-shaped channel steel and the duct piece has good sealing effect by being extruded by the bearing oil cylinder.
Example 2:
The invention provides an emergency device for preventing water and sand from rushing from the tail of a shield, which comprises: the circular arc channel-section steel, as shown in fig. 3, a prevent that shield tail from gushing water from gushing out circular arc channel-section steel of sand, in this embodiment, atress portion and sealing portion are convex, the outer loop radius of channel-section steel is unanimous with shield tail internal diameter, sealing gasket pastes in one side that the shield tail is close to shield tail and section of jurisdiction, and contact with shield tail inner wall and section of jurisdiction, can make the shield tail sealed, sealing gasket should surpass circular arc channel-section steel both sides 50mm when pasting, when installing circular arc channel-section steel in proper order, sealing gasket of two piece adjacent channel-section steel overlaps with the sealing gasket of another channel-section steel, play the effect of strengthening seal at the seam crossing.
The inner side of the arc-shaped channel steel serving as the main stress part is provided with a handle which is convenient to assemble and disassemble. In order to facilitate the disassembly of the circular arc-shaped channel steel, a handle is arranged on one side close to the center of the circle, and in the embodiment, the handle adopts 4mmHPB to 300, so that the welding performance and the mechanical performance are good.
The invention can effectively avoid the safety quality accident and the safety accident caused by the failure of the shield tail brush; the economic loss caused by the safe quality story due to failure of the shield tail brush can be effectively avoided; the casualties caused by safety accidents due to failure of the shield tail brush can be effectively avoided; the social negative influence caused by the safe quality story due to failure of the shield tail brush can be effectively avoided; the construction period loss caused by the safe quality story due to failure of the shield tail brush can be effectively avoided. The invention also has the following beneficial effects: the device has the advantages of small volume, easy processing and simple operation, and improves the plugging quality when the shield tail leaks.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. In order that the components of the invention may be combined without conflict, any person skilled in the art shall make equivalent changes and modifications without departing from the spirit and principles of the invention.
Claims (5)
1. An emergency device for preventing water and sand from rushing from the tail of a shield, comprising:
a shield tail (5),
The duct piece (4) is arranged in 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 plastic material,
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 in sealing connection with the inner wall of the shield tail (5) through a first gasket (51), the arc channel steel (1) is in sealing connection with one end of the duct piece (4) 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 contacted with the inner wall of the shield tail (5), the outer wall of the duct piece (4) and the second gasket (41);
the arc channel steel (1) is used for plugging the shield tail gap (52) through the first gasket (51) and the second gasket (41);
an air charging hole is formed in one end, contacted with the duct piece (4), of the arc channel steel (1);
The second gasket (41) is provided with a through hole communicated with the inflation hole, and the air bag (6) is connected with an inflation device through the inflation hole;
the emergency device further comprises: the telescopic oil cylinder (8) is arranged in the shield tail (5) and used for driving the circular arc channel steel (1) to axially move, and the circular arc channel steel (1) is arranged between the telescopic oil cylinder (8) and the duct piece (4);
The arc channel steel (1) is connected through a flange (2);
The arc channel steel (1) is in a circular ring shape formed by connecting 12 pieces of C-shaped steel with an angle of 30 degrees.
2. An emergency device for preventing surging of water and sand from the shield tail according to claim 1, wherein the length of the first gasket (51) is larger than the length of the circular arc channel steel (1).
3. An emergency device for preventing surging of sand from the tail of a shield according to claim 2, wherein the arc of the first gasket (51) is the same as the arc of the arc channel (1).
4. An emergency device for preventing water and sand from surging from the tail of a shield according to claim 1, wherein a handle (3) is arranged in the middle of the inner annular wall of the arc channel steel (1).
5. A method for preventing the surging of sand from the tail of a shield, characterized in that the emergency device for preventing the surging of sand from the tail of a shield according to any one of claims 1 to 4 is adopted, and the method for preventing the surging of sand from the tail of a shield comprises the following steps:
step one: when the shield tunneling machine leaks, the corresponding telescopic oil cylinders (8) are retracted at the positions of the leakage points;
step two: then the air bag (6) is arranged in the shield tail gap (52);
Step three: the arc channel steel (1) is sequentially placed between a duct piece (4) of a water leakage point and the telescopic oil cylinder (8), the outer edge of the arc channel steel (1) is propped against the inner wall of the shield tail (5), the second gasket (41) is tightly attached to the duct piece (4), and the air hole of the air bag (6) is aligned with the air charging hole of the arc channel steel (1);
Step four: extending out of the telescopic oil cylinder (8) and controlling the stroke of the telescopic oil cylinder (8) to enable the arc channel steel (1) and the second gasket (41) to be tightly pressed against the duct piece (4) without deformation;
Step five: the arc channel steel (1) is sequentially installed, each arc channel steel (1) is connected through a flange (2) until the whole ring of arc channel steel (1) is installed, and the air bag (6) is inflated through the 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 CN113653495A (en) | 2021-11-16 |
| CN113653495B true CN113653495B (en) | 2024-04-30 |
Family
ID=78490578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110906863.5A Active CN113653495B (en) | 2021-08-09 | 2021-08-09 | Method and emergency device for preventing water and sand from rushing from shield tail |
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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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| 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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| CN113653495A (en) | 2021-11-16 |
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