CN109162760B - Safety door device for subway tunnel construction and construction method thereof - Google Patents
Safety door device for subway tunnel construction and construction method thereof Download PDFInfo
- Publication number
- CN109162760B CN109162760B CN201811061873.8A CN201811061873A CN109162760B CN 109162760 B CN109162760 B CN 109162760B CN 201811061873 A CN201811061873 A CN 201811061873A CN 109162760 B CN109162760 B CN 109162760B
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- tunnel
- support
- plate
- reaction frame
- door
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 239000004576 sand Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
Classifications
-
- 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
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
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)
- Lining And Supports For Tunnels (AREA)
Abstract
The safety door device for subway tunnel construction comprises a support, wherein the support is obliquely arranged, the lower end of the support is fixedly arranged on a bottom plate through an anchor bolt, the upper end of the support is connected with a counter-force frame in a welded mode, a jack is arranged on the counter-force frame, a base of the jack is fixedly connected with the counter-force frame through a bolt, a top rod of the jack is in contact with a tunnel portal plate arranged on a tunnel portal, and an opening door is arranged on the tunnel portal plate; the hole door plate is provided with a symmetrical pressurizing valve and a symmetrical pressure relief valve. By adopting the structure and the method, when water and sand gushing accidents occur, the tunnel can be rapidly closed, and further leakage collapse of the accident area is prevented.
Description
Technical Field
The invention relates to the field of subway tunnel construction, in particular to a safety door device for subway tunnel construction and a construction method thereof.
Background
Along with the high-speed development of economic technology in China, subway tunnel projects are widely promoted in large cities in China, although the subway tunnel construction technology in China has greatly advanced and developed, people do not form effective safety protection measures for preventing and treating water and sand gushing accidents in subway tunnel construction.
Disclosure of Invention
The invention aims to solve the technical problem of providing a safety door device for subway tunnel construction and a construction method thereof, which can realize rapid sealing of a tunnel and prevent further leakage collapse of an accident area when water and sand gushing accidents occur.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a safety door device for subway tunnel construction, includes the support, the support slope set up, the lower extreme of support passes through rag bolt fixed setting on the bottom plate, the upper end and the reaction frame welded connection of support are equipped with the jack on the reaction frame, pass through bolt fixed connection between the base of jack and the reaction frame, the ejector pin of jack contacts with the cave door plant that sets up on the tunnel cave door, has seted up the door that opens and shuts on the cave door plant;
the hole door plate is provided with a symmetrical pressurizing valve and a symmetrical pressure relief valve.
In the preferred scheme, in the gap between door plant and the tunnel portal, all be equipped with annular rubber pad in the gap between door plant and the door plant that opens and shuts.
In the preferred scheme, the door plant top of cave still be equipped with the safety cabin, be equipped with the safety cabin door on the one side of safety cabin and the contact of cave door board.
In the preferred scheme, the reaction frame include the stand that sets up in tunnel portal both sides, be equipped with reaction frame entablature and reaction frame bottom end rail between the stand that is located tunnel portal both sides, the tunnel portal is located the rectangle local area that reaction frame entablature, reaction frame bottom end rail and stand formed.
In the preferred scheme, the rectangular frame structure formed by the counter-force frame upper beam, the counter-force frame lower beam and the upright post is provided with an inclined strut at the corner position, and the jack is arranged at the connection position of the inclined strut and the counter-force frame upper beam, the counter-force frame lower beam and the upright post.
The construction method of the safety door device for subway tunnel construction comprises the following steps:
1) The reaction frame is preassembled, and one end of the support is connected with the jack base and the reaction frame;
2) Positioning and erecting a reaction frame, vertically arranging the reaction frame at the end part of the tunnel segment, and fixing the lower end of the reaction frame by using foundation bolts;
3) Retracting the ejector rod of the jack;
4) Preassembling a tunnel door plate, and adhering and fixing an annular rubber pad on one surface of the tunnel door plate facing the tunnel duct piece;
5) Positioning and hoisting a tunnel door plate, hoisting the tunnel door plate to the end part of the tunnel segment and enabling the tunnel door plate to be tightly attached to the end surface of the tunnel segment;
6) After the hoisting equipment is kept stable, the jack is used for applying force to the tunnel portal plate, so that the tunnel portal plate is fastened and fixed on the end face of the tunnel segment by the jacking;
7) Coating sealing agents on the inner side and the outer side of one surface of the annular rubber pad, which is contacted with the portal plate;
8) Installing a pressurizing valve and a pressure relief valve on the hole door plate;
9) And after the mounting steps 1) -8) are completed, closing the opening and closing door, and detecting the air tightness in the tunnel.
In the preferred scheme, in the step 2), after the erection of the reaction frame is completed, the support is fixed, the upper end of the support is movably connected with the reaction frame, and the support fixing specifically comprises the following steps:
1) Pushing the lower end of the support towards the tunnel segment direction to enable the support to rotate on a vertical surface around the upper end of the support;
2) When the lower end of the support cannot be pushed continuously, the lower end of the support is fixed on the bottom plate by using the foundation bolts.
In the preferred scheme, the number of the supports is multiple, and step 1) the lower ends of the supports are pushed by the tunnel to the direction of the portal plate in sequence.
In the preferred scheme, a winch is arranged on the bottom plate below the hole door plate for pushing the lower end of the support, and the winch is used for pulling the lower end of the support to move, so that the force of the winch is removed and the winch is removed after the lower end of the support is fixed on the bottom plate.
In a preferred embodiment, in the step 7), the sealant is glass fiber glue.
The safety door device for subway tunnel construction and the construction method thereof have the following beneficial effects by adopting the structure and the method:
(1) When water and sand burst accidents occur in the tunnel, the tunnel can be closed at the fastest speed, and the purposes of water shutoff and sand shutoff are achieved;
(2) After the tunnel is closed, water and gas are injected into the tunnel through a pressurizing valve so as to balance the pressure of water and soil inside and outside the tunnel and slow down the further leakage and collapse efficiency of water and sand;
(3) Under the condition of pressure in the tunnel, workers can check and repair the tunnel through the safety cabin, and the workers can enter and exit the tunnel without causing unbalance of pressure in the tunnel.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic view of the reaction frame structure of the present invention.
Fig. 4 is a schematic view of the structure of the annular rubber pad of the present invention.
In the figure: the device comprises a support 1, a reaction frame 2, a jack 3, an annular rubber pad 4, a hole door plate 5, a pressurizing valve 6, a safety cabin 7, a tunnel pipe piece 8, a safety cabin door 9, an opening and closing door 10, a cross beam 11, a reaction frame upper cross beam 12, a reaction frame lower cross beam 13, an upright post 14, a pressure relief valve 15 and a diagonal bracing 16.
Detailed Description
Example 1:
in fig. 1, a safety door device for subway tunnel construction comprises a support 1, wherein the support 1 is obliquely arranged, the lower end of the support 1 is fixedly arranged on a bottom plate through foundation bolts, the upper end of the support 1 is in welded connection with a counter-force frame 2, a jack 3 is arranged on the counter-force frame 2, a base of the jack 3 is fixedly connected with the counter-force frame 2 through bolts, a top rod of the jack 3 is in contact with a tunnel portal plate 5 arranged on a tunnel portal, and an opening and closing door 10 is arranged on the tunnel portal plate 5;
the door plank 5 is provided with a symmetrical pressurizing valve 6 and a symmetrical pressure relief valve 15.
In the preferred scheme, annular rubber pads 4 are arranged in gaps between the tunnel portal plate 5 and the tunnel portal and gaps between the opening and closing door 10 and the tunnel portal plate 5.
In the preferred scheme, the door plate 5 top still be equipped with safety cabin 7, be equipped with safety cabin door 9 on the one side of safety cabin 7 and door plate 5 contact.
In the preferred scheme, the reaction frame 2 include the stand 14 that sets up in tunnel portal both sides, be located to be equipped with reaction frame entablature 12 and reaction frame bottom end rail 13 between the stand 14 of tunnel portal both sides, the tunnel portal is located the rectangle local area that reaction frame entablature 12, reaction frame bottom end rail 13 and stand 14 formed.
In a preferred embodiment, the rectangular frame structure formed by the reaction frame upper beam 12, the reaction frame lower beam 13 and the upright post 14 is provided with a diagonal brace 16 at a corner position, and the jack 3 is arranged at a connection position of the diagonal brace 16 and the reaction frame upper beam 12, the reaction frame lower beam 13 and the upright post 14.
In this example, annular rubber pad 4 passes through glass fiber bonding to be fixed on door plant 5, and guarantee to laminate closely between annular rubber pad 4 and the door plant 5 to guarantee the leakproofness, and through the cooperation of reaction frame 2 and jack 3, realize door plant 5 and tunnel segment 8's laminating, thereby further guarantee annular rubber pad 4 and tunnel segment 8's seal.
The door plank 5 is made of Q235B steel plates, and the support is made of 11H-shaped steel.
The opening and closing door 10 on the door plank 5 is used for providing a passage for a tunnel ventilation pipe and an electric vehicle in the normal construction process.
The safety cabin 7 is provided as shown in figures 1 and 2, the bulkhead of the safety cabin 7 is made of Q345R steel plate, the highest working pressure is 0.5MPa, and the effective volume is 3.6m 2 The safety cabin 7 is provided with two safety cabin doors 9, one is located on the door plate 5, the other is located at one end far away from the door plate 5, under the pressurized state in the tunnel, personnel open the safety cabin doors 9 on the door plate 5 and enter the safety cabin 7, after the safety cabin doors 9 on the door plate 5 are closed, the safety cabin doors 9 in the tunnel are opened and then enter the tunnel, and operation is carried out.
The open-close door 10 is made of Q235B steel plates, and in normal construction, the open-close door 10 provides a channel for a tunnel ventilation pipe, a battery car and constructors, and when water and sand surge accidents occur in the tunnel, the open-close door 10 can be closed urgently to play roles in water shutoff and sand shutoff.
Example 2:
on the basis of the structure described in example 1, the erection of the safety device is carried out using the following steps:
1) The reaction frame 2 is preassembled, and one end of the support 1 is connected with the base of the jack 3 and the reaction frame 2;
2) The reaction frame 2 is positioned and erected, the reaction frame 2 is vertically arranged at the end part of the tunnel segment 8, and the lower end of the reaction frame 2 is fixed by using foundation bolts;
3) The ejector rod of the jack 3 is retracted;
4) Preassembling a tunnel door plate 5, and adhering and fixing an annular rubber gasket 4 on one surface of the tunnel door plate 5 facing the tunnel duct piece 8;
5) Positioning and hoisting a tunnel door plate 5, hoisting the tunnel door plate 5 to the end part of the tunnel segment 8 and enabling the tunnel door plate to be tightly attached to the end surface of the tunnel segment 8;
6) After the hoisting equipment is kept stable, the jack 3 is used for applying force to the tunnel door plate 5, so that the tunnel door plate 5 is fixed on the end face of the tunnel segment 8 by jacking;
7) Coating sealing agent on the inner side and the outer side of one surface of the annular rubber pad 4 contacted with the hole door plate 5;
8) Installing a pressurization valve 6 and a pressure relief valve 15 on the portal plate 5;
9) After the mounting steps 1) to 8) are completed, the opening and closing door 10 is closed, and the air tightness in the tunnel is detected.
In the preferred scheme, in the step 2), after the erection of the reaction frame 2 is completed, the support 1 is fixed, the upper end of the support 1 is movably connected with the reaction frame 2, and the fixing of the support 1 specifically comprises the following steps:
1) Pushing the lower end of the support 1 towards the tunnel segment 8 to enable the support 1 to rotate on a vertical surface around the upper end of the support 1;
2) When the lower end of the support 1 cannot be pushed continuously, the lower end of the support 1 is fixed on the bottom plate by using foundation bolts.
In the preferred scheme, the number of the supports 1 is multiple, and the step 1) is to push the lower ends of the supports 1 from the tunnel to the door plate 5 in sequence.
In the preferred scheme, a winch is arranged on the bottom plate below the hole door plate 5 for pushing the lower end of the support 1, and the winch is used for pulling the lower end of the support 1 to move, so that after the lower end of the support 1 is fixed on the bottom plate, the winch is unloaded and removed.
In a preferred embodiment, in the step 7), the sealant is glass fiber glue.
When water and sand burst accidents happen in the tunnel, constructors in the tunnel are evacuated, the opening and closing door 10 is closed, blocking is achieved on the water and sand burst, then the pressurizing valve 6 is opened, pressurizing is carried out in a sealing area in the tunnel, the purpose of balancing the water and soil pressure inside and outside the tunnel is achieved, after that, the workers open the safety cabin door 9 on the hole door plate 5, enter the safety cabin 7, close the safety cabin door 9, then open the safety cabin door 9 on the other end of the safety cabin 7, enter the tunnel to carry out plugging repair operation on the water and sand burst area, after the repair operation is completed, the workers leave the tunnel, then open the pressure relief valve 15, and drain accumulated water in the tunnel.
Claims (8)
1. A construction method for a safety door device for subway tunnel construction, which comprises a support (1) and is characterized in that: the support (1) is obliquely arranged, the lower end of the support (1) is fixedly arranged on the bottom plate through a foundation bolt, the upper end of the support (1) is movably connected with the counter-force frame (2), the counter-force frame (2) is provided with a jack (3), the base of the jack (3) is fixedly connected with the counter-force frame (2) through a bolt, the ejector rod of the jack (3) is contacted with a tunnel portal plate (5) arranged on a tunnel portal, and the tunnel portal plate (5) is provided with an opening and closing door (10);
the hole door plate (5) is provided with a symmetrical pressurizing valve (6) and a symmetrical pressure relief valve (15);
the construction method for the safety door device for subway tunnel construction comprises the following steps:
1) pre-assembling a reaction frame (2), and connecting one end of a support (1) with a base of a jack (3) and the reaction frame (2);
2) Positioning and erecting a reaction frame (2), vertically arranging the reaction frame (2) at the end part of the tunnel segment (8), and fixing the lower end of the reaction frame (2) by using foundation bolts;
3) Retracting the ejector rod of the jack (3);
4) Preassembling a tunnel door plate (5), and adhering and fixing an annular rubber pad (4) on one surface of the tunnel door plate (5) facing a tunnel segment (8);
5) Positioning and hoisting a tunnel door plate (5), hoisting the tunnel door plate (5) to the end part of the tunnel segment (8) and enabling the tunnel door plate to be tightly attached to the end surface of the tunnel segment (8);
6) After the hoisting equipment is kept stable, the jack (3) is used for applying force to the tunnel portal plate (5), so that the tunnel portal plate (5) is fixed on the end face of the tunnel segment (8) in a jacking manner;
7) Coating sealing agents on the inner side and the outer side of one surface of the annular rubber pad (4) which is contacted with the portal plate (5);
8) Installing a pressurizing valve (6) and a pressure relief valve (15) on the tunnel portal plate (5);
9) After the mounting steps 1) to 8) are completed, closing the opening and closing door (10), and detecting the air tightness in the tunnel;
in the step 2), after the erection of the reaction frame (2) is completed, the support (1) is fixed, the upper end of the support (1) is movably connected with the reaction frame (2), and the fixing of the support (1) specifically comprises the following steps:
a) Pushing the lower end of the support (1) towards the tunnel segment (8) to enable the support (1) to rotate on a vertical surface around the upper end of the support;
b) When the lower end of the support (1) cannot be pushed continuously, the lower end of the support (1) is fixed on the bottom plate by using foundation bolts.
2. The construction method for a safety door device for subway tunnel construction according to claim 1, characterized by: annular rubber pads (4) are arranged in gaps between the tunnel portal plate (5) and the tunnel portal and gaps between the opening and closing door (10) and the tunnel portal plate (5).
3. The construction method for a safety door device for subway tunnel construction according to claim 1, characterized by: the upper part of the tunnel portal plate (5) is also provided with a safety cabin (7), and one surface of the safety cabin (7) contacted with the tunnel portal plate (5) is provided with a safety cabin door (9).
4. The construction method for a safety door device for subway tunnel construction according to claim 1, characterized by: the reaction frame (2) comprises upright posts (14) arranged on two sides of the tunnel portal, a reaction frame upper beam (12) and a reaction frame lower beam (13) are arranged between the upright posts (14) arranged on two sides of the tunnel portal, and the tunnel portal is located in a rectangular area formed by the reaction frame upper beam (12), the reaction frame lower beam (13) and the upright posts (14).
5. The construction method for a safety door device for subway tunnel construction according to claim 4, characterized by: rectangular frame structure that reaction frame entablature (12), reaction frame entablature (13) and stand (14) formed is equipped with bracing (16) in the corner position, jack (3) set up in bracing (16) and reaction frame entablature (12), reaction frame entablature (13) and stand (14) hookup location.
6. The construction method for a safety door device for subway tunnel construction according to claim 1, characterized by: the number of the supports (1) is multiple, and the lower ends of the supports (1) are pushed by the tunnel to the direction of the portal plate (5) in sequence in the step a).
7. The construction method for a safety door device for subway tunnel construction according to claim 6, characterized in that: the pushing of the lower end of the support (1) adopts a winch arranged on the bottom plate below the hole door plate (5), the lower end of the support (1) is pulled by the winch to move, and after the fixing of the lower end of the support (1) on the bottom plate is completed, the winch unloads force and is dismantled.
8. The construction method for a safety door device for subway tunnel construction according to claim 1, characterized by: in the step 7), the sealant is glass fiber glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061873.8A CN109162760B (en) | 2018-09-12 | 2018-09-12 | Safety door device for subway tunnel construction and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061873.8A CN109162760B (en) | 2018-09-12 | 2018-09-12 | Safety door device for subway tunnel construction and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109162760A CN109162760A (en) | 2019-01-08 |
| CN109162760B true CN109162760B (en) | 2024-02-27 |
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ID=64894761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811061873.8A Active CN109162760B (en) | 2018-09-12 | 2018-09-12 | Safety door device for subway tunnel construction and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109162760B (en) |
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| Publication number | Publication date |
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| CN109162760A (en) | 2019-01-08 |
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