JP2005282172A - 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: An empty chamber 5 is arranged under a stepped-up part 2 of a descending passage 4 to the underground, and a rainwater detecting means 9 is arranged on its inside. The rainwater flows in the empty chamber 5 from an inflow passage 6 in a heavy rain and flood. When the rainwater detecting means 9 detects a rise in a water level, a water cut-off body 11 of a water cut-off device 10 descends, and shields the descending passage 4 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 according to the present invention includes a vacant space formed in a descending path to the underground, a rainwater inflow channel that connects the ground surface and the vacant space, and a rainwater detection provided in the air. And a water stop device that is operated by the output signal of the rainwater detection means to block the descent path and prevent inflow of rainwater into the underground.

  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, during a heavy rain flood, when rainwater overflowing on the ground surface flows down the descent path and flows into the underground, a part of the rainwater flows into the empty room from the inflow path. And if a rainwater detection means detects this, since a water stop apparatus will operate | move and will prevent inflow of rainwater to underground, underground inundation can be prevented reliably.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a rainwater inflow prevention device for underground, FIG. 2 is a front view thereof, and FIG. 3 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. The stepped portion 2 and the stairs 3 on the right side of the position “a” at the left end of the stepped portion 2 form a descending path 4 to the basement.

  A vacant chamber 5 is formed in the lower part of the step-up portion 2. The vacant chamber 5 communicates with the ground surface such as the uphill portion 2 through a thin inflow channel 6. A thin drain 7 is provided in the lower part of the empty chamber 5. The drain 7 communicates with a drainage system (not shown). Reference numeral 8 denotes an opening / closing portion of the drain 7 which is opened / closed manually or automatically.

  Rain water detection means 9 is provided inside the vacant chamber 5. The rainwater detection means 9 of the present embodiment detects that rainwater has accumulated in the vacant room 5 by electrical continuity between terminals due to rainwater, but a float-type rainwater detection means or the like can also be applied. 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 in the descending passage 4, 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 descent path 4 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. 3, reference numeral 21 denotes a control unit, to which a rainwater detection means 9, a motor driver 22 that drives 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 desirably 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 starts to flow into the basement from the stairs 3 (arrow A), part of the rainwater flows into the empty room 5 through the inflow path 6. And if the water level of the empty room 5 rises to a predetermined height, the rainwater detection means 9 detects 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 open / close unit 8 drains rainwater accumulated in the vacant space 5, but even if the rainwater is closed, rainwater does not substantially flow into the vacant space 5 in the case of light rain. A water level rise in the vacant chamber 5 is detected and the water stop device 10 does not operate. Even if the opening / closing part 8 is opened (this means that the opening / closing part 8 is not necessarily required), if the amount of water flowing through the drain 7 is made smaller than that of the inflow channel 6, it is possible during a heavy rain flood. Rainwater accumulates in the vacant chamber 5, and the rainwater detection means 9 can detect a rise in the water level in the vacant chamber 5. In any case, the vacant space 5, the inflow channel 6, the drain 7, the rainwater detection means 9 and the like should be able to reliably detect the rainwater flowing into the basement during a heavy rain flood, and the dimensions thereof can be freely set. Can design. Further, an inflow path 6 ′ may be formed at a position indicated by a broken line in FIG. 1 so as to communicate with the vacant chamber 5, and in this case, the descending path 4 is on the right side of the position b of the inflow path 6 ′.

  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 rainwater inflow prevention device to the underground 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 Step up part 3 Stairway 4 Descent path 5 Vacancy 6 Inflow path 9 Rainwater detection means 10 Water stop device 11 Water stop body

Claims (2)

  It is activated by a vacant space formed in the descent path to the basement, an inflow channel of rainwater that connects the ground surface and the vacant space, a rainwater detection means provided inside the air, and an output signal of the rainwater detection means An underground rainwater inflow prevention device comprising a water stop device that blocks a descent path and prevents inflow of rainwater 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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