CN204343378U - A kind ofly utilize domatic flowing water as the tunnel fire protection system at water source - Google Patents

Abstract

The utility model discloses a tunnel fire-fighting system using slope water as a water source. By using slope water as a water source, a sufficient water storage capacity of a reservoir can be ensured, and the cost can be reduced at the same time; Build cut-off ditches to collect rainwater on slopes, making water collection more convenient and less costly; by setting up low-level pools, pump rooms and high-level pools, water pressure can be automatically provided to tunnel fire hydrants; The amount of sand is detected. When there is too much sand, a wireless alarm signal is sent to the control center of the tunnel fire protection system, prompting the staff to clean up the sand in the sand sink well, so as to avoid the excessive sand in the sand sink well that will block the pipeline connecting the low-level pool. , As a result, the low-level pool cannot store water, resulting in no water available for fire fighting in the tunnel.

Description

A tunnel fire protection system using slope water as 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 slope 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 protection system using slope water as a water source. By using slope water as a water source, sufficient water storage capacity of the reservoir can be ensured while reducing costs.

A tunnel fire-fighting system using slope water as a water source, including a pressure sensor, a wireless alarm, an intercepting drainage ditch, and a filter pool, a sedimentation well, a low-level pool, a pump room, a high-level pool, and a tunnel fire hydrant built near the tunnel ;

There are multiple intercepting drainage ditches, and the same intercepting drainage ditch is built along the same contour line of the hillside to collect rainwater to form slope water on the mountain;

The ends of all the cut-off ditches are collected into the filter pool, which is built in a low-lying place near the tunnel, and the filter pool is connected to the sand settling well through pipelines; the sand settling well is arranged on the upper part of the well wall The pipeline communicates with the low-level pool; the position of the low-level pool is lower than the sand sinking well; the pump room pumps the water from the low-level pool into the high-level pool; the position of the high-level pool is higher than the low-level pool; The high level pool is connected to the tunnel fire hydrant through at least two pipelines; the height of the high level pool is set according to the water pressure of the tunnel fire hydrant;

The pressure sensor is placed at the bottom of the sand sinking well, and the output end of the pressure sensor is connected with a wireless alarm; the wireless alarm is set at the top of the sand sinking well, and is connected with the control center of the tunnel fire protection system by wireless.

Further, 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 slope water flowing from the overflow hole of the low-level pool.

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 section of the cut-off drainage ditch is an inverted trapezoid, and the slope of the upper surface of the cut-off drainage ditch is 5%; The joints are filled with asphalt burlap; the distance between the two adjacent expansion joints is 10 meters to 15 meters.

The utility model has the following beneficial effects:

The tunnel fire-fighting system of the utility model can ensure sufficient water storage capacity of the reservoir by using slope water as a water source, and at the same time reduce costs; build cut-off drainage ditches on multiple contour lines of the hillside to collect slope rainwater, so that It is more convenient to collect water sources and the cost is lower; by setting up low-level pools, pump rooms and high-level pools, water pressure can be automatically provided to the tunnel fire hydrants; pressure sensors are set up to detect the amount of sediment in the sand sinking well. For a long time, a wireless alarm signal is sent to the control center of the tunnel fire protection system, reminding the staff to clean up the sediment in the sand sinking well, so as to avoid excessive sediment in the sand sinking well causing the pipeline connected to the low-level pool to be blocked, resulting in the failure of the low-level pool to store water and causing tunnel damage. There is no water available for firefighting.

Description of drawings

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

Fig. 2 is the schematic diagram of the sinking well in the utility model.

Fig. 3 is a schematic diagram of the hillside where the tunnel is located in the utility model.

Fig. 4 is a schematic diagram of running water on a slope in the present invention.

Among them, 61-cutting drainage ditch, 62-tunnel, 63-filter pool, 92-slope rapid flow tank, 93-energy dissipation dam, 94-side ditch, 95-road surface rapid flow tank, 97-hillside, 98-drainage ditch, 99-sand sinking well, 910-low pool.

Detailed ways

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

As shown in Figure 1 and Figure 2, multiple intercepting drainage ditches are built on the mountain break adjacent to the tunnel, and the same intercepting drainage ditch is built along the same contour line of the hillside to collect rainwater and form slope water on the mountain; the water flows along the mountain Potential to flow in the cut-off ditch. The ends of all intercepting drainage ditches are collected into the filter pool, and the filter pool is built in a low-lying place near the tunnel. After the sediment settles in the sand sinking well, the clean water will automatically flow from the pipes installed on the upper part of the sand sinking well to the low-level pool at the lower level, and then the clean water will be sent to the high-level pool through the pump room. Since the position of the high-level pool is higher than that of the tunnel fire hydrant , the water in the fire hydrant automatically builds up 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.

The pressure sensor is placed at the bottom of the sand sinking well, and the output end of the pressure sensor is connected to a wireless alarm; the wireless alarm is set on the top of the sand sinking well, and is connected with the control center of the tunnel fire protection system by wireless. By setting the pressure sensor to detect the amount of sediment in the sedimentation well, when there is too much sediment, a wireless alarm signal will be sent to the control center of the tunnel fire protection system to remind the staff to clean up the sediment in the sedimentation well to avoid mud in the sedimentation well Excessive sand blocked the pipes connecting the lower pools, making it impossible to store water in the lower pools, resulting in no water available for firefighting in the tunnels.

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.

As shown in FIG. 3 , the section of the intercepting drainage ditch is an inverted trapezoid, and the slope of the upper surface of the intercepting drainage ditch is 5%, which is used for draining surface water on the slope. Expansion joints are opened every 10 to 15 meters in the cut-off ditch, and the expansion joints are filled with asphalt sackcloth.

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 slope water as a source of water, characterized in that it comprises a pressure sensor, a wireless alarm, an intercepting drainage ditch and a filter pool, a sand sinking well, a low pool, a pump room, and a building near the tunnel. High pools and tunnel fire hydrants; There are multiple intercepting drainage ditches, and the same intercepting drainage ditch is built along the same contour line of the hillside to collect rainwater to form slope water on the mountain; The ends of all the cut-off ditches are collected into the filter pool, which is built in a low-lying place near the tunnel, and the filter pool is connected to the sand settling well through pipelines; the sand settling well is arranged on the upper part of the well wall The pipeline communicates with the low-level pool; the position of the low-level pool is lower than the sand sinking well; the pump room pumps the water from the low-level pool into the high-level pool; the position of the high-level pool is higher than the low-level pool; The high level pool is connected to the tunnel fire hydrant through at least two pipelines; the height of the high level pool is set according to the water pressure of the tunnel fire hydrant; The pressure sensor is placed at the bottom of the sand sinking well, and the output end of the pressure sensor is connected with a wireless alarm; the wireless alarm is set at the top of the sand sinking well, and is connected with the control center of the tunnel fire protection system by wireless. 2. A tunnel fire-fighting system using slope water as a water source according to claim 1, characterized in that an overflow hole is provided on the upper part of the pool wall of the low-level pool. 3. A tunnel fire-fighting system using slope water as a water source as claimed in claim 1, wherein an overflow well is provided near the low pool to store the slope water flowing out from the overflow hole of the low pool . 4. A tunnel fire-fighting system using slope water as a water source according to claim 1, wherein the low-level water pool has the same capacity as the high-level water pool, and is used to replenish water to the high-level water pool. 5. A kind of tunnel fire-fighting system that utilizes slope water as a water source as claimed in claim 1, characterized in that, the water inlet pipe between the high-level pool and the tunnel fire hydrant rises toward the slope of the tunnel fire hydrant, and the The slope is greater than or equal to five thousandths. 6. A tunnel fire-fighting system using slope water as a water source as claimed in claim 1, wherein 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 , the bell mouth is at least 0.5 meters lower than the lowest water level of the high level pool. 7. A tunnel fire-fighting system using slope water as a water source as claimed in claim 6, wherein 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 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 clear distance between the two water inlet pipes is greater than or equal to 3.5 times the diameter of the water inlet pipe. 8. A tunnel fire-fighting system using slope water as a water source according to claim 1, wherein the section of the cut-off drainage ditch is an inverted trapezoid, and the slope of the upper surface of the cut-off drainage ditch is 5%. 9. A tunnel fire protection system using slope water as a water source as claimed in claim 8, wherein expansion joints are opened equidistantly in the cut-off drainage ditch, and the expansion joints are filled with asphalt burlap. 10. A tunnel fire protection system using slope water as a water source according to claim 9, wherein the distance between the two adjacent expansion joints is 10 meters to 15 meters.