Method of ventilation tunnels and device for its implementation

 

The invention relates to mining and construction and can be used in the construction of road tunnels. The objective of the invention is to separate the implementation of General ventilation and smoke removal when the emission of polluted air through the portals of the tunnels. Method of ventilation of tunnels includes a forced flow in the tunnels of fresh air, the removal of polluted air mode air by creating a low atmospheric pressure and drainage of polluted air in the smoke removal mode. The removal of contaminated air from the tunnels in the modes of ventilation and smoke produced separately and on different exhaust manifolds provided with tunnels transverse channels. Provide continuous air cleaning and noise control. For removal of polluted air in the mode of ventilation open shutoff valve gas manifold and include vozduhoobmenu fans. The removal of polluted air in the smoke removal mode is carried out at atmospheric pressure, which closes the shutoff valves in the gas manifold and disconnect vozduhoobmenu fans lining the air pressure in the tunnel to atmospheric and PR is dilatory. Device for ventilation of tunnels includes fans for forced ventilation of the tunnel by creating a low atmospheric pressure, stand-alone smoke exhaust system with heat resistant fans lining installation, longitudinal gas manifold with shutoff valves, intake flue manifold with valves smoke and sewage treatment plants. Gas manifold disposed between the tunnels along their longitudinal axis and connected with them transverse air channels. Intake flue collector is located along the gas manifold and communicates with the transverse tunnels smoke channels. The output ends of the gas manifold installed heat resistant fans. Treatment units are arranged in the gas manifold at its ends. Vozduhoobmenu fans installed between treatment and sound attenuating units in the gas manifold. 2 S. p. f-crystals, 1 Il.

The group of inventions relates to the field of mining and construction and can be used in the construction of, for example, parallel road tunnels.

The basic requirement for laying road tunnels is zizneopisa the AI fire or congestion in the tunnel, posing an increased danger to people due to smothering and toxic effect of smoke and exhaust the exhaust gases of cars and other vehicles.

Other requirements for road tunnels should prevent release through the portals of the tunnels to the surface and into the surrounding space of the exhaust gases, and the need for noise control during operation of the tunnels.

There is a method of ventilation of tunnels, including forced fresh air with his ejection in the transverse zboyco by fans and by alternative ventilation tunnels as the maximum gas content of one of them (see, for example, USSR author's certificate No. 800387, CL E 21 F 1/00, published. 1981).

The main disadvantage of this method is the direct release through the portals of the tunnels exhaust gases and the inability to remove smoke from the tunnels in case of fire without any fresh air to the fire.

There is also known a method of ventilation of tunnels, including the forced flow in the tunnel fresh air through the ventilation longitudinal drift and cross breakthrough by fans General anodically processes of air in the tunnel and removal of the tunnel of air pollution in conjunction with smoke /see, for example, USSR author's certificate No. 1122832, CL E 21 F 1/00, published. 1984/.

To implement this method is used the device for ventilation of tunnels, including longitudinal gas manifold for mixing fresh and polluted air and exhaust it out of the operational area of the tunnel through the transverse air channels, pressure fans for forced ventilation of the tunnel, and means for creating a reduced atmospheric pressure in predostavlenyh zones of the tunnel consists of two angled to each other planes /see the last of the above sources of information/.

The main disadvantage of the latter method and device for its implementation is that they do not provide a separate implementation of processes air and smoke.

Other disadvantages of the above technical solutions is that they do not provide treatment of contaminated tunnel air and noise control from working ventilation systems.

There is also known a method of ventilation of tunnels, including forced feeding tunnels of fresh air and removal of polluted air in regim implementation of forced ventilation in tunnels, and also diversion of polluted air in the smoke removal mode with offline resistant fans (see, for example, patent RF № 2175366, CL E 01 1/04, published. 27.10.2001).This method is the closest from among known analogues of the proposed method.

From the same source of information known device for holding tunnels, including exhaust fans for forced ventilation of the tunnel by creating a low atmospheric pressure, stand-alone smoke exhaust system with heat-resistant fans and noise installation. This device is the closest analogue of the proposed device.

The main disadvantage of the latter method and device is that in the event of a fire in the tunnel, they do not provide the implementation process smoke without fresh air to the fire with simultaneous and continuous cleaning of polluted air in the emergency tunnel through the next generation, resulting in increased risk of heat and carbon monoxide lesions located in the underground mine workings and in the bordering space people.

The objective of the proposed group of inventions is the creation of exploitatie tunnels provides the elimination of the above-noted disadvantages of the known technical solutions through the implementation process smoke without fresh air to the fire with simultaneous and continuous cleaning of polluted air in the emergency tunnel through the next generation, separation processes General ventilation and smoke removal systems, as well as due to the emission of polluted air, samohlasen from working ventilation units and vehicle engines.

The problem is solved in that in the method of ventilation of tunnels, including forced feeding tunnels of fresh air and removal of polluted air in the mode of ventilation using vozduhoobmenu fans that create low atmospheric pressure for the implementation of forced ventilation in tunnels, and removal of contaminated air in the smoke removal mode using Autonomous heat resistant fans, exhaust contaminated air from the tunnels in the modes of ventilation and smoke produced separately and on different exhaust manifolds, gas with shutoff valve and intake smoke with smoke removal valves provided with tunnels transverse channels, provide continuous air cleaning using sewage treatment plants and squelch for removal of polluted air in the mode of ventilation open shutoff valve gas manifold and include vozduhoobmenu fans and drainage seapony in the gas manifold and disconnect vozduhoobmenu fans, aligning the air pressure in the tunnel to atmospheric and stopping the flow of fresh air, and then open the valves smoke and include stand-alone heat-resistant fans. In the device for ventilation of tunnels, including fans for forced ventilation of the tunnel by creating a low atmospheric pressure, stand-alone smoke exhaust system with heat resistant fans lining installation, there is a longitudinal gas manifold with shutoff valves, intake flue manifold with valves smoke and sewage treatment plants, gas-air manifold disposed between the tunnels along their longitudinal axis and connected with them transverse air channels, smoke intake manifold is located along the gas manifold and communicated with tunnels transverse flue channels at the output end of which is equipped with heat-resistant fans, treatment plants placed in the gas manifold at its ends, and vozduhoobmenu fans installed between treatment and sound attenuating units in the gas manifold.

The above-mentioned disadvantages of the known technical solutions, as well as the nature and advantages of preavleniya this group with reference to the drawing.

The drawing schematically shows a device for ventilation, placed between the parallel road tunnels with one-way traffic.

Tunnels, conventionally called the right 1 and left 2 have portals 3 and 4. Between tunnels along their common longitudinal axis 5 posted by longitudinal gas collector 6 with a dividing wall 7 and a shutoff valve 8. As shown in the drawing, some of the valves 8 are installed in the area of the right tunnel 1, and the other in the area of the left tunnel 2.

The ends of the reservoir 6 for his valves 8 in the direction of gas flow sequentially installed treatment plants 9, a powerful vozduhoobmenu exhaust fans 10 and lining installation 11.

Gas manifold 6 is connected at the ends with a vertical kiosks to drain most of purified air to the atmosphere outside of tunnels 1 and 2. Each section of the gas manifold 6 /in its cross-section is connected with the corresponding tunnel through the transverse air channel 12.

Along the gas collector 6 is laid smoke intake manifold 13 which is connected to the operational areas of tunnels 1 and 2 through Poperechnaya fans 16.

Intake flue collector 13, the transverse flues 14, smoke exhaust valves 15 and heat-resistant fans 16 form an Autonomous system of smoke.

The direction of gas flow within the manifold 6 is conventionally shown by arrows 17, and the direction of movement of vehicles in tunnels - arrows 18.

Tunnels 1 and 2 are equipped with an additional entry 19 exit 20 tunnels.

Power vozduhoobmenu exhaust fan 10 is designed so that when mounted in the manifold 6 for sewage treatment plants 9 and before the sound attenuating units 11 and they, together with the resistance to gas flow from the tunnel portals 3 and 4 and additional tunnels 19 and 20 to the exhaust kiosks are used to create low atmospheric pressure in the near-portal operational areas of tunnels 1 and 2, which prevents the emission of polluted air from the tunnels directly into the atmosphere through the portals 3 and 4.

The capacity of heat-resistant exhaust fans 16 are selected so that when mounted on the ends of the smoke intake manifold 13 and they, together with the resistance of the flue stream does not create a difference in atmospheric pressure in the operational areas of t

Mode vozduhoobmenu ventilation open shut-off valves 8 and includes a fan 10, resulting in near-portal zones of tunnels 1 and 2 creates a low atmospheric pressure, through which is carried out by extrusion force fresh air into the tunnels, the air polluted and fresh air in operational areas, tunnels, drainage from the latter through the transverse air channels 12 and longitudinal gas collector 6 of polluted air, clearing the last in the reservoir 6 through sewage treatment plants 9 and squelch with the installation of 11.

In the event of a fire in any of the tunnels 1 or 2 close automatically or manually matching this tunnel shut-off valve 8 in the gas collector 6 and disable vozduhoobmenu fans 10. As a result of this tunnel is aligned air pressure to atmospheric and stops the supply of fresh air to the fire, thus preventing the intensification and spread of fire in tunnels. To exhaust generated during the fire suffocating smoke open smoke exhaust valves 15 and include in the work of heat-resistant fans 16 running on the hood of smoke from tunnel, the pure 9 and lining installation 11, neutralized largely smoke is produced on the surface without exerting toxic effects on humans in the tunnels. Due to this expanding opportunities for safe evacuation from the zone of fire.

The proposed device for ventilation of tunnels allows in the case of high gas concentration in one of the tunnels /for example, when the occurrence of congestion in the tunnel/ to carry out additional sampling in this tunnel of fresh air through another tunnel, thereby increasing the ventilation in the emergency tunnel.

Thus, the proposed group of inventions provides a solution to the problem, namely the ventilation tunnels with separate processes General ventilation and smoke removal with the exception of the spontaneous emission of polluted air through the portals of the tunnels in the atmosphere, continuous clean the polluted underground tunnel air and the maximum sound attenuation functions. The result is a greater degree of security of people and improving the environmental situation in tunnels and on the adjacent territory.

Claims

1. Method of ventilation of tunnels, including forced poach fans, creating a reduced atmospheric pressure for the implementation of forced ventilation in tunnels, and removal of contaminated air in the smoke removal mode with offline resistant fans, characterized in that the removal of contaminated air from the tunnels in the modes of ventilation and smoke produced separately and on different exhaust manifolds, gas with shutoff valve and intake smoke with smoke removal valves provided with tunnels transverse channels provide continuous air cleaning using sewage treatment plants and squelch for removal of polluted air in the mode of ventilation open shutoff valve gas manifold and include vozduhoobmenu fans, and removal of polluted air in the smoke removal mode is carried out at atmospheric pressure, which closes the shutoff valves in the gas manifold and disconnect vozduhoobmenu fans lining the air pressure in the tunnel to atmospheric and stopping the flow of fresh air, and then open the valves smoke and include stand-alone heat-resistant fans.

2. Device for ventilation of tunnels, including venomous the smoke exhaust system with heat resistant fans, lining installation, characterized in that it is provided with a longitudinal gas manifold with shut-off valves, intake flue manifold with valves smoke and sewage treatment plants, gas-air manifold disposed between the tunnels along their longitudinal axis and connected with them transverse air channels, smoke intake manifold is located along the gas manifold and communicated with tunnels transverse flue channels at the output end of which is equipped with heat-resistant fans, treatment plants placed in the gas manifold at its ends, and vozduhoobmenu fans installed between treatment and sound attenuating units in the gas manifold.

 

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