JP2005282173A - Rainwater inflow preventive device to underground - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rainwater inflow preventive device to the underground, capable of avoiding underground flooding by preventing the inflow, by early detecting the inflow of rainwater to the underground. <P>SOLUTION: A recessed part 5 is arranged on a side wall of stairs 3 to the underground, and a rainwater detecting means 6 is arranged on its inside. The rainwater flows in the recessed part 5 in a heavy rain and flood. When the rainwater detecting means 9 detects the inflow, a water cut-off body 11 of a water cut-off device 10 descends, and shields a descending passage to the underground, and checks the inflow of the rainwater to the underground. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rainwater inflow prevention device for preventing rainwater from entering underground such as an underground mall.

  During heavy rain floods, rainwater inflow accidents occur in underground underground stations, underground malls, and basements of buildings. Conventionally, as countermeasures, measures have been taken to prevent the inflow of rainwater into the basement, such as by placing a sandbag on a descent path to the basement such as an underground entrance or standing a water stop plate.

  However, such conventional measures require a considerable amount of human power, and cannot respond quickly, especially at night or early morning. It was lost.

  Therefore, an object of the present invention is to provide an underground rainwater inflow prevention device that can detect the inflow of rainwater to the underground at an early stage and prevent this in advance to avoid underground inundation.

  The underground rainwater inflow prevention device of the present invention is operated by the rainwater detection means provided in the underground descending path and the output signal of the rainwater detecting means to block the descending path and prevent the rainwater from flowing into the underground. With water stop device to prevent.

  The underground rainwater inflow prevention device according to the present invention is the rainwater inflow prevention device according to claim 1, further comprising an informing means for informing the inflow of rainwater into the underground by an output signal of the rainwater detection means.

  According to the present invention, in the event of a heavy rain, when rainwater overflowing the ground surface flows down the descent path and flows into the underground, when the rainwater detection means detects this, the water stop device operates and the rainwater into the underground Since the inflow of water is blocked, underground inundation can be reliably prevented.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view of a descending path to the underground, FIG. 2 is a plan view thereof, FIG. 3 is a front view of a rainwater inflow prevention device, and FIG. 4 is a block diagram of a control system.

  In FIG. 1, a step-up portion 2 is provided on the ground surface of the entrance portion from the pavement 1 to the basement, and a staircase 3 for descending from the step-up portion 2 to the basement is provided. Stair 3 is a descent to the basement.

  In FIG. 1 and FIG. 2, a recess 5 is formed at an appropriate place such as a side wall of the staircase 3. Rain water detection means 6 is provided inside the recess 5. The rainwater detection means 6 of the present embodiment detects that rainwater has accumulated in the recess 5 by electrical continuity between terminals due to rainwater. A plate-like water stop body 11 of the water stop device 10 is provided above the rising portion 2. The waterstop 11 may be provided at an appropriate place on the descending path, but in the present embodiment, the waterstop 11 is provided above the ascending portion 2 that is an entrance to the underground.

  Next, the water stop device 10 will be described with reference to FIG. Left and right side door stops 12 are provided on the side wall 20 of the descending path such as an underground entrance, and the waterstop 11 is provided at the side door contact 12 so as to be movable up and down. A lateral member 13 is provided on the side door 12. One end of a wire 14 is attached to the upper part of the waterstop 11. The wire 14 circulates a roller 15 provided above the transverse member 13, and the other end is wound around a drum 16. The drum 16 is rotated by being driven by a motor 17 to wind and unwind the wire 14, thereby moving the waterstop 11 up and down. Of course, in addition to the power unit such as the motor 17, manual operation means such as a handle for raising and lowering the water stop body 11 may be provided.

  In FIG. 4, reference numeral 21 denotes a control unit, to which a rainwater detection means 6, a motor driver 22 for driving the motor 17, a rainwater inflow notification means 23, and the like are connected. The rainwater inflow notifying means 23 is, for example, an alarm sound generator or an alarm lamp, and is installed at an appropriate place such as a subway operation management room or an underground shopping center. The rainwater inflow notification means 23 is preferably provided in the vicinity of the water stop device 10 in order to notify a pedestrian in the vicinity of the water stop device 10.

  This underground rainwater inflow prevention device is configured as described above, and the operation thereof will be described next. In FIG. 1, when rainwater overflows the uphill portion 2 due to heavy rain and begins to flow into the basement from the stairs 3 (arrow A), part of the rainwater flows into the recess 5. And if the water level of the recessed part 5 rises to predetermined height, the rainwater detection means 9 will detect this. Then, the motor 17 starts driving, and the water stop body 11 (shown by a solid line in FIG. 1) in the raised position descends and lands on the rising portion 2 (see the water stop body 11 shown by a chain line in FIG. 1). ). This prevents rainwater from flowing underground.

  The present invention is not limited to the above-described embodiment. For example, in addition to the above-described water stop device, various types of water stop devices such as those found in river sluices can be applied.

  The underground rainwater inflow prevention device according to the present invention can detect and prevent the inflow of rainwater to the underground at an early stage, so that means for preventing rainwater from flowing into the underground such as underground stations of underground, underground malls, and basements of buildings. As industrially available.

Side view of the descending path to the underground in the embodiment of the present invention The top view of the descending path to the basement in the embodiment of the present invention The front view of the rainwater inflow prevention apparatus to the underground in embodiment of this invention The block diagram of the control system of the rainwater inflow prevention apparatus to the underground in embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ground surface 2 Stepped-up part 3 Stairs 5 Recessed part 6 Rain water detection means 10 Water stop device 11 Water stop body

Claims (2)

  It is equipped with rainwater detection means provided in the descent path to the underground, and a water stop device that operates by the output signal of this rainwater detection means to block the descent path and prevent inflow of rainwater to the underground Prevents rainwater from flowing into the underground. 2. The underground rainwater inflow prevention device according to claim 1, further comprising an informing means for informing inflow of rainwater into the underground by an output signal of the rainwater detecting means.

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