CN204343381U - A kind of Tunnel Gushing that utilizes is as the tunnel fire protection system at water source - Google Patents

Abstract

The utility model discloses a kind of Tunnel Gushing that utilizes as the tunnel fire protection system at water source, it is characterized in that, comprise the sand sediment trap, low pool, pump house, head-tank and the tunnel fire plug that ooze pipe, central row ditch, gutter and transverse drain and build near described tunnel; By utilizing Tunnel Gushing as water source, can conveniently fetch water, water intake facilities is simple, reduces costs; By arranging low pool, pump house and head-tank, automatically hydraulic pressure can be provided to tunnel fire plug.

Description

A tunnel fire protection system using tunnel water as a water source

technical field

The utility model relates to the technical field of tunnel fire protection, in particular to a tunnel fire protection system using tunnel water as a water source.

Background technique

With the advancement of road construction, there are more and more road tunnels in mountainous and plateau areas. Once a fire occurs in a road tunnel, the consequences will be serious. Therefore, it is extremely necessary to build a tunnel fire protection system. These tunnels are basically located in the high mountains and far away from towns, and the water for fire fighting is to build pools to store water to ensure the demand for fire water. Due to topography, geology, precipitation and other factors, it is often difficult to collect fire-fighting water sources in high-speed tunnels, and the guarantee rate of water source water is low. In addition, there are defects in the location, construction and management of the reservoir, resulting in water seepage, leakage and damage to the reservoir Seriously, it cannot meet the fire water requirements. Even if water trucks are used to replenish the reservoir, the cost is high and the feasibility is low.

Utility model content

In view of this, the utility model provides a tunnel fire-fighting system using tunnel water as a water source. By using tunnel water as a water source, it is convenient to fetch water, which can ensure sufficient water storage capacity of the reservoir and reduce costs at the same time.

A tunnel fire protection system using tunnel water as a water source of the utility model includes seepage pipes, central drainage ditch, side ditch and lateral drainage pipes, sand sinking wells, low-level pools, pump rooms, high-level pools and Tunnel fire hydrants;

There are a plurality of seepage pipes, which are laid horizontally along the arched structure of the tunnel roof to collect tunnel water; all the seepage pipes are connected with the side ditch;

The central drainage ditch is arranged on the centerline of the tunnel to collect road surface water;

The side ditch is built on both sides of the tunnel road, and communicates with the central drainage ditch through a horizontal drainage pipe;

The side channel communicates with the sand settling well through the drainage ditch built beside the tunnel road; the sand settling well communicates with the low-level water pool through the pipeline arranged on the upper part of the well wall; the position of the low-level water pool is lower than the sand settling well The pump room pumps the water from the low-level pool to the high-level pool; the high-level pool is built higher than the low-level pool; the high-level pool is connected to the tunnel fire hydrant through at least two pipelines.

Further, it also includes a water filter tank, which is arranged between the sedimentation well and the side ditch; an overflow hole is provided on the upper part of the pool wall of the low-level pool; an overflow well is provided near the low-level pool to store the Water from the overflow hole.

Preferably, the capacity of the low-level water pool is equivalent to that of the high-level water pool, and is used to replenish water to the high-level water pool; the slope of the water inlet pipe between the high-level water pool and the tunnel fire hydrant rises toward the direction of the tunnel fire hydrant, and the slope is greater than or It is equal to five thousandths; the inlet pipe connected between the high-level pool and the tunnel fire hydrant is provided with a downward-facing bell mouth at one end of the high-level pool, and the bell mouth is at least 0.5 meters lower than the lowest water level of the high-level pool; the bell mouth The net distance from the bottom of the high-level pool is greater than or equal to 0.8 times the diameter of the water inlet pipe, and the net distance between the edge of the bell mouth and the wall of the high-level pool is greater than or equal to 1.5 times the diameter of the water inlet pipe; the net distance between the two water inlet pipes The distance is greater than or equal to 3.5 times the diameter of the water inlet pipe; the outer side of the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is wrapped with foam or antifreeze cotton wool; the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is sprayed with Rust, degreasing or acid-resistant coatings.

The utility model has the following beneficial effects:

The tunnel fire-fighting system of the utility model can conveniently take water by using the tunnel water as a water source, the water-taking facilities are simple, and the cost is reduced; by setting a low-level water pool, a pump room and a high-level water pool, it can automatically provide water pressure for the tunnel fire hydrant.

Description of drawings

Fig. 1 is a schematic diagram of the tunnel fire fighting system of the present invention.

Fig. 2 is a schematic structural diagram of the tunnel in the present invention.

Among them, 1-seepage pipe, 2-central drainage ditch, 3-side ditch, 4-horizontal drainage pipe, 5-drainage ditch, 6-inspection well.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and examples.

The seepage pipe collects the tunnel gushing water in the soil and rocks on the roof of the tunnel, and the tunnel gushing water flows down the seepage pipe to the side ditches on both sides of the tunnel entrance; at the same time, when it rains, the accumulated water on the road flows into the side ditches and the central drainage ditch, and the side ditches and the central drainage ditch The water from the side ditch is collected into the side ditch on one side through the horizontal drainage pipe, and the water collected from the side ditch is introduced into the grit chamber through the drainage ditch built on the side of the road. The pipes installed on the upper part of the well wall of the sand sinking well automatically flow to the lower pool, and then the clean water is sent to the high pool through the pump room. Since the position of the high pool is higher than that of the tunnel fire hydrant, the water in the fire hydrant automatically forms pressure. The height of the elevated pool is set according to the water pressure of the tunnel fire hydrant. In order to ensure the uninterrupted water supply of fire hydrants, there should be no less than two water inlet pipes for a group of fire hydrants. When one of the fire hydrants is damaged, the remaining water inlet pipes can still pass all the water.

In order to ensure sufficient water volume, the capacity of the low-level pool and the high-level pool are equivalent. When the water in the high-level pool is used up, the low-level pool can replenish water to the high-level pool once, which can ensure that the water volume of the two high-level pools can be provided to the fire hydrant during a fire. use water.

In order to prevent air from accumulating in the water inlet pipe, the slope of the water inlet pipe between the high-level pool and the tunnel fire hydrant rising toward the tunnel fire hydrant shall be greater than or equal to 5/1000.

In order to ensure that the water in the high-level pool can automatically flow into the water inlet pipe, the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is provided with a downward-facing bell mouth at one end of the high-level pool, and the bell mouth is at least 0.5 meters lower than the lowest water level of the high-level pool . The clear distance between the bell mouth and the bottom of the high-level pool is greater than or equal to 0.8 times the diameter of the water inlet pipe, and the clear distance between the edge of the bell mouth and the wall of the high-level pool is greater than or equal to 1.5 times the diameter of the water inlet pipe; the distance between the two water inlet pipes The net distance is greater than or equal to 3.5 times the diameter of the water inlet pipe.

The water inlet pipe in cold mountainous areas must have antifreeze protection measures, so the outside of the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is wrapped with foam or antifreeze cotton wadding.

Anti-corrosion measures should be taken for the water inlet pipe, and the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is sprayed with a rust-removing, oil-removing or acid-proof coating. For underground pipes, asphalt insulation can be used for anti-corrosion treatment.

In summary, the above are only preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A tunnel fire-fighting system utilizing tunnel water gushing as a water source, characterized in that it comprises a seepage pipe, a central drainage ditch, a side ditch and a lateral drainage pipe and builds a sand sink near the tunnel, a low pool, a pump room, a high Pools and tunnel fire hydrants; There are a plurality of seepage pipes, which are laid horizontally along the arched structure of the tunnel roof to collect tunnel water; all the seepage pipes are connected with the side ditch; The central drainage ditch is arranged on the centerline of the tunnel to collect road surface water; The side ditch is built on both sides of the tunnel road, and communicates with the central drainage ditch through a horizontal drainage pipe; The side channel communicates with the sand settling well through the drainage ditch built beside the tunnel road; the sand settling well communicates with the low-level water pool through the pipeline arranged on the upper part of the well wall; the position of the low-level water pool is lower than the sand settling well The pump room pumps the water from the low-level pool to the high-level pool; the high-level pool is built higher than the low-level pool; the high-level pool is connected to the tunnel fire hydrant through at least two pipelines. 2. A tunnel fire protection system utilizing tunnel water gushing as a water source according to claim 1, further comprising a filter pool disposed between the sedimentation well and the low-level water pool. 3. A tunnel fire protection system utilizing tunnel water gushing as a water source according to claim 1, characterized in that an overflow hole is provided on the upper wall of the low-level pool. 4. A tunnel fire protection system using tunnel water as a water source according to claim 3, characterized in that an overflow well is provided near the low-level pool to store the water flowing out of the overflow hole of the low-level pool. 5 . A tunnel fire protection system using tunnel water as a water source according to claim 1 , wherein the capacity of the low-level water pool is equivalent to that of the high-level water pool, and is used to supply water to the high-level water pool. 6 . 6. A kind of tunnel fire-fighting system utilizing tunnel water as a water source as claimed in claim 1, characterized in that, the slope of the water inlet pipe between the high-level pool and the tunnel fire hydrant rises toward the direction of the tunnel fire hydrant, and the slope is greater than or equal to five thousandths. 7. A tunnel fire-fighting system using tunnel water as a water source according to claim 1, characterized in that, the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is provided with a downward bell mouth at one end of the high-level pool, The bell mouth is at least 0.5 meters lower than the lowest water level of the high level pool. 8. A tunnel fire protection system using tunnel water as a water source according to claim 7, characterized in that the clear distance between the bell mouth and the bottom of the high-level pool is greater than or equal to 0.8 times the diameter of the water inlet pipe, and the horn The net distance between the edge of the mouth and the wall of the high-level pool is greater than or equal to 1.5 times the diameter of the water inlet pipe; the net distance between the two water inlet pipes is greater than or equal to 3.5 times the diameter of the water inlet pipe. 9. A tunnel fire protection system utilizing tunnel water as a water source according to claim 1, characterized in that, the outer side of the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is wrapped with foam or antifreeze cotton wadding. 10. A tunnel fire-fighting system using tunnel water as a water source according to claim 1, wherein the water inlet pipe connected between the high-level pool and the tunnel fire hydrant is sprayed with rust-removing, oil-removing or acid-proof coating.