WO2015189537A1 - Bouchon de tunnel gonflable - Google Patents

Bouchon de tunnel gonflable Download PDF

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Publication number
WO2015189537A1
WO2015189537A1 PCT/GB2015/000164 GB2015000164W WO2015189537A1 WO 2015189537 A1 WO2015189537 A1 WO 2015189537A1 GB 2015000164 W GB2015000164 W GB 2015000164W WO 2015189537 A1 WO2015189537 A1 WO 2015189537A1
Authority
WO
WIPO (PCT)
Prior art keywords
inflatable
tunnel
plug
tunnel plug
inflatable portion
Prior art date
Application number
PCT/GB2015/000164
Other languages
English (en)
Inventor
Duncan Godfrey Mervyn THOMPSON
Original Assignee
The Secretary Of State For Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Secretary Of State For Defence filed Critical The Secretary Of State For Defence
Publication of WO2015189537A1 publication Critical patent/WO2015189537A1/fr

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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
    • E21F17/107—Dams, e.g. for ventilation inflatable
    • 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
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/10—Air doors
    • 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
    • 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
    • E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
    • 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
    • E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
    • E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • E21D9/0873—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines the shield being provided with devices for lining the tunnel, e.g. shuttering
    • 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
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents

Definitions

  • This invention relates to an inflatable tunnel plug, for example for blocking a tunnel.
  • Inflatable tunnel plugs are known in the art, and may be installed into tunnels in a packed state. If a need arises to block the tunnel, then the tunnel plug can be deployed, for example by inflating the tunnel plug to unpack it.
  • One of the main purposes of tunnel plugs is to disrupt movement of air through the tunnels, for example to prevent smoke or fumes travelling along the full length of the tunnel.
  • the deployment of two tunnel plugs on either side of a fire in the tunnel can starve the fire of oxygen to help put the fire out.
  • the patent publication US 4,023,372 discloses a tunnel plug for mines, wherein the tunnel plug has an inflatable outer that can be filled with gas to deploy the tunnel plug and block the mine.
  • the shape of the inflatable outer needs to match the shape of the mine in order to fully block the mine tunnel.
  • an inflatable outer of the type described above is shaped to substantially match the tunnel, the inflatable outer still may not create a very good seal against interior surfaces of the tunnel, for example against rail tracks, or against corners.
  • the gas pressure inside the inflatable outer tends to make the inflatable outer arc across corners, rather than filling them fully, leaving gaps where air can bypass the tunnel plug.
  • An improved seal between the tunnel plug and the internal surfaces of the tunnel is desirable to improve the sealing offered by the tunnel plug and the resulting restriction of airflow.
  • An improved seal may be particularly important if the tunnel plug is intended to block toxic fumes or biological agents from passing along a tunnel to where people or animals are located.
  • a high inflation pressure is desirable to provide structural strength to a tunnel plug and prevent the tunnel plug from bending or flapping about within the tunnel.
  • high inflation pressures can result in the tunnel plug failing to conform to the internal surfaces of the tunnel, for example bridging across corners instead of fully filling them.
  • a tunnel plug material that is designed to constrain higher inflation pressures is also typically thicker and less able to confirm to the internal surfaces of the tunnel.
  • an inflatable tunnel plug for blocking a tunnel, the tunnel plug comprising at least a first inflatable portion and a second inflatable portion that is inflatable to support the first inflatable portion against an interior surface of the tunnel.
  • the first inflatable portion is configured to inflate to a lower pressure than the second inflatable portion upon deployment of the tunnel plug.
  • the first inflatable portion is configured to inflate to a lower pressure than the second inflatable portion, the first inflatable portion is able to closely conform to the shape of the interior surface of the tunnel.
  • the higher inflation pressure of the second inflatable portion provides the tunnel plug with sufficient structural strength once it has been deployed to prevent the tunnel plug from bending or deforming.
  • the first inflatable portion may comprise a first chamber into which fluid can be passed to inflate the first inflatable portion
  • the second inflatable portion may comprise a second chamber into which fluid can be passed to inflate the second inflatable portion.
  • the second inflatable portion may be inside of the first chamber of the first inflatable portion, or the second inflatable portion may be immediately adjacent the first inflatable portion.
  • Each inflatable portion may each be formed from one or more flexible layers of material defining a closed interior that constitutes the chamber of the inflatable portion.
  • the chamber may be filled with fluid to inflate the inflatable portion from a packed configuration to an unpacked configuration.
  • the flexible layer(s) of material forming the first inflatable portion may be thinner and/or more malleable than the flexible layer(s) of material forming the second inflatable portion, to help the first inflatable portion conform to the interior surfaces of the tunnel, and since the flexible layers of material forming the first inflatable portion do not have to constrain as much fluid pressure as the flexible layers of material forming the second inflatable portion.
  • the tunnel plug may further comprise an inflation device for filling the first and second inflatable portions with fluid to inflate the first and second inflatable portions upon deployment of the tunnel plug.
  • the fluid is normally gaseous, although the use of liquids would also be possible.
  • the inflation device may comprise a gas/smoke sensor for automatically triggering the inflation device, and/or the inflation device may be remotely triggered by an operator via radio communications or wiring, in order to deploy (unpack) the tunnel plug.
  • the inflation device may comprise an explosive for producing fluid, a store of compressed fluid, or a pump for pumping fluid, such as a fan.
  • the inflation device may comprise a first fluid output connected to the first inflatable portion for filling the first inflatable portion to a first pressure, and a second fluid output connected to the second inflatable portion for filling the second inflatable portion to a second pressure higher than the first pressure.
  • the inflation device may be configured to fill the first inflatable portion with fluid via the second inflatable portion.
  • the tunnel plug may comprise a pressure relief valve that is configured to pass fluid from the second inflatable portion into the first inflatable portion when a fluid pressure within the second inflatable portion is a threshold pressure higher than a fluid pressure within the first inflatable portion. Accordingly, the difference in pressure between the first and second inflatable portions may be set by the threshold pressure of the pressure relief valve.
  • the first inflatable portion may be fitted with an exhaust pressure relief valve, the exhaust pressure relief valve configured to exhaust fluid to atmosphere when a fluid pressure in the first inflatable portion is an exhaust threshold pressure above atmospheric pressure. Then, an excess quantity of fluid supplied by the inflation device will not raise the pressures of the first and second inflatable segments above the desired levels, since the excess fluid can escape to atmosphere via the exhaust pressure relief valve, and so the quantity of fluid supplied by the inflation device does not need to be accurately specified provided the quantity is greater than a minimum amount for full inflation to occur.
  • the further pressure relief maintains a relatively low pressure inside the first inflatable portion, so that the shape of the first inflatable portion readily adapts to seal against the tunnel wall.
  • the tunnel plug is larger than the tunnel which it is intended to fill, for example 5% larger, so that there is ample material of the first inflatable portion to enter into corners and depressions within the interior surface of the tunnel.
  • the tunnel plug may comprise a centre and an outer periphery extending around the centre, and the outer periphery may be formed by the first inflatable portion so that it is presented to the interior surface of the tunnel.
  • the outer periphery extends at least half the way around the centre, and may extend all of the way around the centre.
  • the second inflatable portion may extend around the centre between the centre and the outer periphery, so that the second inflatable portion helps force the first inflatable portion forming the outer periphery against the interior surface of the tunnel.
  • the tunnel plug may comprise a centre portion at its centre, wherein the centre portion is non-inflatable.
  • the centre portion may be a single layer of material, such as a wall or web.
  • the centre portion could comprise more than one layer of material, for example to improve the strength of the centre portion.
  • the centre portion fully extends over an area enclosed by the first or the second inflatable portions, so that the centre portion together with the first and second inflatable portions fully blocks the tunnel when the tunnel plug is deployed.
  • the centre portion may comprise a door which is openable to allow a person to pass through the centre portion. Then, the deployment of the tunnel plug will not risk trapping people since they can use the door to move through the tunnel plug.
  • the tunnel plug may further comprise a third inflatable portion and a fourth inflatable portion that is inflatable to support the third inflatable portion against an interior surface of the tunnel, wherein the third inflatable portion is configured to inflate to a lower pressure than the fourth inflatable portion upon deployment of the tunnel plug, and wherein the first and third inflatable portions are spaced apart from one another at a base of the tunnel plug and next to one another at a top of the tunnel plug when the tunnel plug is deployed.
  • the tunnel plug may therefore take an A shape when deployed, to provide greater stability to the tunnel plug.
  • the third and fourth inflatable portions provide an additional impediment to fluid flow along the tunnel, increasing the effectiveness of the tunnel plug.
  • the first chamber of the first inflatable portion may extend into the third inflatable portion to enable inflation of the third inflatable portion.
  • the first and third inflatable portions may be integrally formed as a single inflatable portion having the first chamber.
  • the first and third inflatable portions may be separate from one another such that the third inflatable portion has its own third chamber.
  • a composite tunnel plug for blocking a tunnel.
  • the composite tunnel plug comprises a first inflatable tunnel plug for blocking the tunnel and a second inflatable tunnel plug for blocking the tunnel, wherein the first and second inflatable tunnel plugs each have a top end and a bottom end opposite the top end, wherein the top ends of the first and second inflatable tunnel plugs adjoin one another and the bottom ends of the first and second inflatable tunnel plugs are spaced apart from one another in a length direction of the composite tunnel plug when the composite tunnel plug is deployed, the composite tunnel plug configured to deploy with the length direction of the composite tunnel plug aligned with a length of the tunnel.
  • the composite tunnel plug comprises two inflatable tunnel plugs, for example two of the inflatable tunnel plugs as hereinbefore described, there is a double barrier to any fluids or gases flowing along the tunnel. For example, if each one of the first and second inflatable tunnel plugs reduce airflow through the tunnel to 10%, then the combined effect of the first and second inflatable tunnel plugs is to reduce airflow through the tunnel to 1 %.
  • the composite tunnel plug may take an A shape when deployed, to provide greater stability to the composite tunnel plug, each inflatable tunnel plug forming one side of the "A".
  • Fig. 1 shows a schematic diagram of a tunnel incorporating a tunnel plug in a packed configuration, the tunnel plug according to a first embodiment of the invention
  • Fig. 2a shows a schematic diagram of the tunnel of Fig. 1 with the tunnel plug in an unpacked configuration following its deployment within the tunnel;
  • Fig. 2b shows a cross-sectional diagram of the tunnel plug of Fig. 2a, the cross- section taken along line AA marked on Fig. 2a;
  • Fig. 3a shows a schematic diagram of the tunnel of Fig. 1, with a tunnel plug according to a second embodiment of the invention in an unpacked configuration following its deployment within the tunnel;
  • Fig. 3b shows a cross-sectional diagram of the tunnel plug of Fig. 3a, the cross- section taken along line BB marked on Fig. 3a;
  • Fig. 4 shows a schematic perspective diagram of a tunnel plug according to a third embodiment of the invention in an unpacked configuration, the tunnel plug being suitable for use in the tunnel of Fig. 1 ;
  • Fig. 5 shows a schematic perspective diagram of a tunnel plug according to a fourth embodiment of the invention in an unpacked configuration, the tunnel plug being suitable for use in the tunnel of Fig. 1.
  • FIG. 1 shows schematic diagrams of a tunnel 10 incorporating a tunnel plug 20.
  • the schematic diagram of Fig.l shows a view of the tunnel 10 taken in a direction along the length of the tunnel 10.
  • the tunnel 10 comprises railway lines 12 at a base of the tunnel for guiding railway cars, a lighting strip 14 mounted at the left side of the tunnel for lighting the tunnel, a cable trunking 16 mounted at the left side of the tunnel beneath the lighting strip 14, and the tunnel plug 20 mounted at the right side of the tunnel.
  • the cable trunking 16 supports cables carrying power and/or signals relevant to the railway, for example power and/or signals for railway signalling equipment.
  • the railway lines 12, lighting strip 14, and cable trunking 16 extend substantially along the full length of the tunnel, and the tunnel plug 20 extends only a short distance along the length of the tunnel, for example 2 metres. In this embodiment, further tunnel plugs the same as the tunnel plug 20 are mounted at 100 metre intervals along the length of the tunnel.
  • the tunnel plug 20 is shown in a packed configuration in Fig. 1, and only takes up a small portion of the tunnel 10, so as not to impede railways cars travelling through the tunnel along the railway lines 12.
  • the tunnel plug 20 comprises an inflation device 21, which in this embodiment is a container 21 of compressed air.
  • a valve of the container 21 may be opened to release the compressed air from the container 21 when the tunnel plug 20 is to be deployed.
  • Electrical wiring (not shown in Figs) is connected between the container 21 and a control centre (also not shown in Figs) external to the tunnel to control the opening of the valve of the container 21.
  • the inflation device 21 may also comprise a gas or smoke sensor configured to automatically open the valve of the container 21 when gas or smoke is detected.
  • FIG. 2a The schematic diagram of Fig. 2a shows the tunnel plug 20 once it has been deployed within the tunnel 10.
  • the control centre signals the valve of the container 21 to open via the electrical wiring, and the compressed air within the container 21 exits the container 21 to inflate the tunnel plug 20 and unpack it.
  • the tunnel plug 20 comprises a centre portion 22, a first inflatable portion 24, and a second inflatable portion 26.
  • the first inflatable portion 24 is a first continuous tube running fully around the perimeter of the centre portion 22.
  • the second inflatable portion 26 is a second continuous tube that runs inside of the first continuous tube 24, substantially concentric with the first continuous tube 24.
  • the tubes are referred to as continuous since they each form a closed circuit.
  • the first continuous tube 24 forms a first chamber 25 inside of the first continuous tube 24, and the second continuous tube 26 forms a second chamber 27 inside of the second continuous tube 26.
  • a pressure relief valve 28 is positioned in the wall forming the second continuous tube 26, and so the pressure relief valve 28 leads from the second chamber 27 of the second continuous tube 26 into the first chamber 25 of the first continuous tube 24.
  • the pressure relief valve is configured to pass fluid (air) from the second chamber 27 to the first chamber 25 when there is greater than a threshold pressure differential from the second chamber to the first chamber.
  • the threshold pressure differential of the pressure relief valve is set at 50KPa, although other values are also possible.
  • An exhaust pressure relief valve 28a is positioned in the wall forming the first continuous tube 24, and exhausts air from the first chamber 25 to atmosphere if the pressure in the chamber 25 rises to an exhaust threshold pressure above atmospheric pressure.
  • the exhaust threshold pressure is set at 50KPa, although other values are also possible.
  • the first continuous tube 24 and the second continuous tube 26 are formed of a plasticised fabric material, the plasticised fabric material forming the second continuous tube 26 being a heavier duty material than the plasticised fabric material forming the first continuous tube 24 in view of the higher pressure that the second continuous tube 26 must constrain, and in view of the need for the first continuous tube 24 to easily conform to the inside surfaces of the tunnel 10.
  • the plasticised fabric materials could be replaced by other types of flexible air-tight materials in alternate embodiments of the invention, for example glass fibre fabric coated with silicone rubber.
  • the centre portion 22 is formed of a web of plasticised fabric material that is connected to the first continuous tube 24 and fully extends over the region enclosed by the first continuous tube 24.
  • the centre portion 22 comprises a door 30 that is defined by a zip 32, the zip 32 allowing part of the centre portion to be unzipped from the remainder of the centre portion so that a person can move through the door 30 if required.
  • the container 21 is inside of the second continuous tube 26. Accordingly, when compressed air is emitted from the container 21 upon deployment of the tunnel plug 20, the second continuous tube 26 is inflated to help block the tunnel 10 with the tunnel plug. Once the second continuous tube 26 is fully inflated and/or begins to be constrained by the interior surfaces of the tunnel 10, such as between the lighting strip 14 and the right side 11 of the tunnel, the pressure within the second continuous tube 26 continues to rise until the pressure relief valve 28 begins to allow air to flow from the second continuous tube 26 into the first chamber 25 of the first continuous tube 24.
  • the first continuous tube 24 is formed larger than the size of the tunnel 10 so that there is ample material of the continuous tube 24 to conform to the shapes of the railway lines 12 and the lighting strip 14 and cable trunking 16.
  • the container 21 holds sufficient compressed air to inflate the second continuous tube 26 to a pressure of lOOKPa above atmospheric pressure, meaning that the first continuous tube 24 is inflated to a pressure of 50KPa above atmospheric pressure given the 50KPa threshold pressure differential of the pressure relief valve 28, and the 50KPa exhaust threshold pressure of the exhaust pressure relief valve 28a.
  • other values of pressures may alternatively be used by setting the amount of compressed air in the container 21 and the threshold pressure differential of the pressure relief valve 28.
  • One or more pressure relief valves 28 may be provided between the second continuous tube 26 and the first chamber 25 of the first continuous tube 24.
  • FIG. 3a shows a tunnel plug 40 in an unpacked configuration after deployment within the tunnel 10 of Fig. 1.
  • the tunnel plug 40 comprises a central portion 42 similar to the central portion 22, a first inflatable portion 44 formed as a first continuous tube, and a second inflatable portion 46 formed as a second continuous tube.
  • the first continuous tube 44 is spaced apart from the central portion 42 by the second continuous tube 46.
  • a pressure relief valve 48 similar to the valve 28 is connected at an interface between the first and second continuous tubes 44 and 46, and allows air to flow from a second chamber 47 of the second continuous tube 46 into a first chamber 45 of the first continuous tube 44.
  • the tunnel plug 40 comprises an inflation device, which in this embodiment includes a propellant 41 of sodium azide.
  • the propellant 41 is within the second continuous tube 46, and is ignited via electrical wiring (not shown in Figs) to deploy the tunnel plug 41 within the tunnel 10.
  • the ignition of the sodium azide rapidly produce gas which inflates the second continuous tube 46, and subsequently the first continuous tube 44 via the pressure relief valve 48, in a similar manner as described in relation to the first embodiment.
  • the propellant 41 may be formed of gas-producing materials other than sodium azide, for example nitroguanidine.
  • the inflation device also comprises a gas and smoke sensor 49, which is mounted on an outside surface of the second continuous tube 46. The gas and smoke sensor 49 is configured to automatically ignite the propellant 41 to inflate the tunnel plug 40 in the event that gas or smoke is detected.
  • the second continuous tube 46 supports the first continuous tube 44 to conform to the interior surfaces of the tunnel 10, in a similar manner as described in relation to the first embodiment.
  • FIG. 4 shows a schematic perspective diagram of a tunnel plug 50 in an unpacked
  • the tunnel plug 50 is the same as the tunnel plug 20 of the first embodiment, except for that the two of the tunnel plugs 20 are connected in an A shape to provide better stability to the tunnel plug, and for that a different inflation device is used.
  • An additional benefit of the A frame design is in doubling the contact area of plug in contact with the tunnel wall, thus providing a more efficient seal against the transport of particles and vapour.
  • the tunnel plug 50 comprises a first centre portion 62, a first inflatable portion 64, and a second inflatable portion 66.
  • the first inflatable portion 64 is a first continuous tube running fully around the perimeter of the first centre portion 62.
  • the second inflatable portion 66 is a second continuous tube that runs around the inside of the first continuous tube 64, substantially concentric with the first continuous tube 64.
  • the tunnel plug 50 further comprises a second centre portion 72, a third inflatable portion 74, and a fourth inflatable portion 76.
  • the third inflatable portion 64 is a third continuous tube running fully around the perimeter of the second centre portion 72.
  • the fourth inflatable portion 76 is a fourth continuous tube that runs around the inside of the third continuous tube 74, substantially concentric with the third continuous tube 74.
  • the first continuous tube 64 and the third continuous tube 74 are joined together at a top of the tunnel plug 50, and are spaced apart from one another by a strut 80 at a base of the tunnel plug 50, effectively forming an A shape.
  • the base of the tunnel plug 50 is intended to sit upon the base of the tunnel 10, and the top of the tunnel plug is intended to press against the top of the tunnel 10.
  • the tunnel plug 50 typically provides a better seal than the tunnel plug 20, since there are effectively two of the tunnel plugs 20 in series with one another.
  • the tunnel plug 50 comprises an inflation device 83, which in this embodiment is an air pump.
  • the air pump 83 comprises an aerial 85 for receiving radio signals to control the air pump.
  • the air pump 83 has a first fluid outlet pipe 81 that is connected to the first continuous tube 64, and a second fluid outlet pipe 811 that is connected to the second continuous tube 66.
  • a first pipe 88 connects the first continuous tube 64 to the third continuous tube 74, and a second pipe 881 connects the second continuous tube 66 to the fourth continuous tube 76.
  • the tunnel plug 50 is normally in a packed configuration, similar to the packed tunnel plug 20 shown in Fig. 1.
  • the air pump 83 pumps air at a first pressure along the first fluid outlet pipe 81, into the first continuous tube 64.
  • the air travels from the first continuous tube 64 into the third continuous tube 74 via the first pipe 88, and so the first and third continuous tubes are both inflated up to the first pressure.
  • the air pump 83 also pumps air at a second pressure along the second fluid outlet pipe 811, into the second continuous tube 66.
  • the air travels from the second continuous tube 66 into the fourth continuous tube 76 via the second pipe 881, and so the second and fourth continuous tubes are both inflated up to the second pressure.
  • the first pressure is lower than the second pressure, and so the first and third continuous tubes are inflated to a lower pressure than the second and fourth continuous tubes, so that the first and third continuous tubes can easily conform to the interior surfaces of the tunnel 10, and so that the second and fourth continuous tubes can provide a good level of support to the first and third continuous tubes.
  • the first pressure may be 30KPa above atmospheric pressure and the second pressure may be 50KPa above atmospheric pressure.
  • FIG. 5 shows a schematic perspective diagram of a tunnel plug 100 in an unpacked configuration.
  • the tunnel plug 100 is the same as the tunnel plug 50 of the third embodiment, except for that the first and third inflatable portions 84 and 94 are formed by a first common inflatable portion, the second and fourth inflatable portions 86 and 96 are formed by a second common inflatable portion, and a different inflation device is used.
  • the second common inflatable portion 86, 96 is inside of the first common inflatable portion 84, 94.
  • a chamber of the first inflatable portion 84 extends into the third inflatable portion 94 to form the first common inflatable portion
  • a chamber of the second inflatable portion 94 extends into the fourth inflatable portion 96 to form the second common inflatable portion. Accordingly, the first and third inflatable portions do not need to be inflated individually, but can be inflated as a whole, and the second and fourth inflatable portions do not need to be inflated individually, but can be inflated as a whole.
  • the area enclosed by the first inflatable portion 84 is spanned by a first centre portion 82, and the area enclosed by the third inflatable portion 86 is spanned by a second centre portion 92.
  • the first inflatable portion 84 and the third inflatable portion 94 are joined together at a top of the tunnel plug 100, and are spaced apart from one another by a strut 90 at a base of the tunnel plug 100, effectively forming an A shape.
  • the base of the tunnel plug 100 is intended to sit upon the base of the tunnel 10, and the top of the tunnel plug is intended to press against the top of the tunnel 10.
  • the inflation device for inflating the tunnel plug from a packed configuration into the unpacked configuration shown in Fig. 5 comprises two propellants 91 and 93 of sodium azide.
  • the propellant 91 is within the first common inflatable portion 84, 94, and the propellant 93 is within the second common inflatable portion 86, 96.
  • the propellants 91, 93 are ignited via electrical wiring (not shown in Figs) to produce gas that inflates and thereby unpacks the tunnel plug 100 within the tunnel 10.
  • the propellants 91 and 93 are sized to inflate the second common inflatable portion 86, 96 to a higher pressure than the first common inflatable portion 84, 94, so that the second common inflatable portion supports the first common inflatable portion to conform to the interior surfaces of the tunnel 10, in a similar manner as described in relation to the third embodiment.
  • the tunnel plugs 50 and 100 of the third and fourth embodiments are composite tunnel plugs because they each effectively comprise two inflatable tunnel plugs, one inflatable tunnel plug formed by the first and second inflatable portions and another tunnel plug formed by the third and fourth inflatable portions.
  • the first arid second inflatable tunnel plugs each have a top end TE and a bottom end BE opposite the top end, wherein the top ends TE of the first and second inflatable tunnel plugs adjoin one another and the bottom ends BE of the first and second inflatable tunnel plugs are spaced apart from one another in a length direction LD of the composite tunnel plug when the composite tunnel plug is deployed, the composite tunnel plug configured to deploy with the length direction LD of the composite tunnel plug aligned with a length of the tunnel.

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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)
  • Environmental & Geological Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention porte sur un bouchon de tunnel gonflable (20), lequel bouchon comprend une première partie gonflable (24) et une seconde partie gonflable (26) qui peut être gonflée afin de maintenir la première partie gonflable (24) contre une surface intérieure (11, 12, 14, 16) du tunnel. La première partie gonflable (24) est gonflée à une pression inférieure à celle de la seconde partie gonflable (26). L'invention porte également sur un bouchon de tunnel composé (50, 100). Le bouchon de tunnel composé comprend un premier bouchon de tunnel gonflable pour boucher le tunnel et un second bouchon de tunnel gonflable pour boucher le tunnel. Les extrémités supérieures (TE) des premier et second bouchons de tunnel gonflables se rejoignent mutuellement, et les extrémités inférieures (BE) des premier et second bouchons de tunnel gonflables sont mutuellement espacées l'une de l'autre dans le sens de la longueur (LD) du bouchon de tunnel composé quand le bouchon de tunnel composé est déployé.
PCT/GB2015/000164 2014-06-10 2015-06-10 Bouchon de tunnel gonflable WO2015189537A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1410255.2 2014-06-10
GBGB1410255.2A GB201410255D0 (en) 2014-06-10 2014-06-10 An inflatable tunnel plug

Publications (1)

Publication Number Publication Date
WO2015189537A1 true WO2015189537A1 (fr) 2015-12-17

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PCT/GB2015/000164 WO2015189537A1 (fr) 2014-06-10 2015-06-10 Bouchon de tunnel gonflable

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WO (1) WO2015189537A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
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CN109404035A (zh) * 2018-11-05 2019-03-01 中国神华能源股份有限公司 充气式风门
CN110057260A (zh) * 2019-05-28 2019-07-26 湘潭大学 一种综合管廊施工爆破隔离装置
CN110185486A (zh) * 2018-08-28 2019-08-30 郑州煤炭工业（集团）杨河煤业有限公司 一种钢管混凝土结构永久防突风门墙体及其施工方法
CN110985098A (zh) * 2020-01-02 2020-04-10 中国矿业大学(北京) 一种抗爆多囊快速密闭气囊及其使用方法
WO2024040853A1 (fr) * 2022-08-25 2024-02-29 浙大城市学院 Structure de renforcement pliable gonflable pour tunnel et son procédé de construction

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106168141A (zh) * 2016-09-08 2016-11-30 山东科技大学 一种矿山巷道风门智能控制系统及其控制方法
CH713770B1 (de) * 2017-05-15 2021-11-30 Swiss Transp Research Institute Ag Verfahren zur temporären Unterteilung eines als Verkehrsweg dienenden Tunnels oder Rohrs in voneinander getrennte Abschnitte.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070218825A1 (en) * 2006-03-16 2007-09-20 Heintzmann Corporation (Usa) Inflatable ventilation life curtain
US8365804B1 (en) * 2011-05-03 2013-02-05 The United States Of America As Represented By The Secretary Of The Army Portable inflatable protective partitioning system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1760130A1 (ru) * 1989-08-16 1992-09-07 Донецкий политехнический институт Шахтна надувна перемычка
US6557374B2 (en) * 2000-12-28 2003-05-06 Igor K. Kotliar Tunnel fire suppression system and methods for selective delivery of breathable fire suppressant directly to fire site
CH700709B1 (de) * 2007-08-20 2010-10-15 Mobil Technik Ag Abdichtungssystem für tunnelartigen Durchgang, sowie Brandbekämpfungssystem.
CN202157818U (zh) * 2011-06-29 2012-03-07 韶关市赛力乐液压件制造有限公司 充气式坑道风量调节风墙
US9562432B2 (en) * 2012-09-20 2017-02-07 Rite-Hite Holding Corporation Inflatable air barriers
CN203347823U (zh) * 2013-06-28 2013-12-18 中铁十七局集团第三工程有限公司 一种隧道通风施工用充气式隔离装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070218825A1 (en) * 2006-03-16 2007-09-20 Heintzmann Corporation (Usa) Inflatable ventilation life curtain
US8365804B1 (en) * 2011-05-03 2013-02-05 The United States Of America As Represented By The Secretary Of The Army Portable inflatable protective partitioning system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110185486A (zh) * 2018-08-28 2019-08-30 郑州煤炭工业（集团）杨河煤业有限公司 一种钢管混凝土结构永久防突风门墙体及其施工方法
CN109404035A (zh) * 2018-11-05 2019-03-01 中国神华能源股份有限公司 充气式风门
CN110057260A (zh) * 2019-05-28 2019-07-26 湘潭大学 一种综合管廊施工爆破隔离装置
CN110985098A (zh) * 2020-01-02 2020-04-10 中国矿业大学(北京) 一种抗爆多囊快速密闭气囊及其使用方法
WO2024040853A1 (fr) * 2022-08-25 2024-02-29 浙大城市学院 Structure de renforcement pliable gonflable pour tunnel et son procédé de construction
US11988093B2 (en) 2022-08-25 2024-05-21 Hangzhou City University Inflatable folding tunnel reinforcement structure and construction method thereof

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