JP3684438B2 - Underground common space - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of an underground common space having a circular cross section.
[0002]
[Prior art]
The underground common space is a place where cables such as telephone lines, power lines, etc., and multiple types of pipes such as water pipes, gas pipes, sewer pipes, district heating hot water pipes, etc. are stored and equipped with these maintenance inspection spaces. This is the facility space established inside. This is typically a so-called joint groove.
[0003]
These pipes, etc. are installed using shelves provided inside the underground common space, or in the case of large scales, the accommodations are stored separately with a partition for each occupant . In general, the underground common space is provided between a plurality of fistulas, and cables and pipes are introduced and pulled out at the fistula portion, and drainage in the underground common space is discharged. In addition, in order to branch and pull out cables, pipelines, and the like to houses, stores, factories, buildings, etc., branch portions are provided at appropriate locations in the underground common space.
[0004]
The main purpose of the underground joint space is to collect underground facilities such as cables and water and sewage pipes in one place, thereby eliminating the obstacles to traffic caused by digging the road surface and obstacles to roadside residents. In addition, it is easy to maintain and expand these accommodations. For these reasons, as a construction method for underground underground spaces in urban areas, a shield construction method or a so-called push-pipe method in which pipes are pushed in to form a cross-sectional structure in the ground, the interior space of In general, a storage space is used.
[0005]
[Problems to be solved by the invention]
However, problems common to such underground common spaces include water leakage due to cracks, penetrating water such as rainwater entering from manholes such as pits and branches, and water flowing in from the outside. Conventionally, it has been dealt with by installing drainage pits and drainage pumps, but currently it does not deal with moisture problems arising from drainage channels, etc., and cables and various pipelines are likely to corrode. There were drawbacks.
[0006]
[Means for Solving the Problems]
Therefore, in view of these points, the present inventor has formed the present invention as a structure for effectively protecting cables and pipelines from rainwater and water leakage, and the feature is that pipes, cables, etc. are stored. in space and a circular cross section of the underground space 2 provided with a facility space 3 consisting of these maintenance space for, with the facility space 3該地in space 2, discharge pipe to isolate the lower of the facility space 3 9 The drainage pipe storage section 4 is configured to be divided into the drainage path storage section 4 and connected to the upper surface of the drainage path storage section 4 by the inspection hole 13 of the drainage pipe 9 and the drainage pipe 9 and the connection pipe 20. water collecting chambers 12 to the inner wall base, the exhaust waterway housing portion inside the drainage pump 15 and the exhaust pipe 14 of 4 provided Rutotomoni, the facility space 3 inwardly from said population water squares 12 arranged on both sides of the inner wall base This is because the partition plate 21 is provided .
[0007]
Here, the “facility space” as used in this specification is a generic term for a space for accommodating cables, pipes, and the like and a space for maintenance and inspection thereof. Say. The underground space only needs to have a size of φ600 or more, and includes a space having a large-scale facility space such as a subway or an underground carriageway.
[0008]
The “drainage storage part” refers to a part in a space in the underground space that is isolated from the facility space and accommodates a drainage channel for draining rainwater, water leakage, etc. in the underground space. Isolation in this case is intended to prevent moisture from the drainage channel from entering the facility space as much as possible. For this reason, in this invention, a drain pipe is used as a drainage channel. The drainage channel storage section where the drainage pipe is provided is separated and separated by concrete, iron plate, plastic plate or the like.
[0009]
On the upper surface of the drainage channel storage part, which is a partition surface with the facility space, a water collecting basin for introducing water that has entered the facility space into the drainage pipe is provided at the base of the inner wall , and an inspection hole for the drainage pipe is provided. In addition, a drainage pump for sending wastewater from the underground space to the outside and an exhaust pipe for discharging moisture in the drainage channel storage unit to the outside are provided inside the drainage channel storage unit. Furthermore, in the present invention, the facility space is partitioned by a partition plate provided inward from the water collecting basin 12 disposed on both sides of the inner wall base.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments of the invention.
[0011]
1 (a) and 1 (b) schematically show an example of an embodiment of an underground joint space 1 according to the present invention, and an underground space 2 that is a circular structure in cross section formed by a shield method. A facility space 3 is arranged in the upper part, and a drainage channel storage part 4 isolated from the facility space 3 is arranged in the lower part. In the facility space 3, a cable 5 such as a telephone line and a power line, a plurality of types of pipes 6 such as water and sewage pipes, gas pipes, and hot water pipes for district heating are housed in the facility space 3, and maintenance and inspection thereof are performed. A space 7 is provided. In the drainage channel storage part 4 separated by the facility space 3 and the partition wall 8, a drain pipe 9 for discharging water that has entered the facility space 3 is provided. The underground space 2 is basically formed of one circular cross-sectional layer, but in this example, an example is shown in which it is composed of a primary lining layer 10 made of segments and a secondary lining layer 11 made of reinforced concrete.
[0012]
A partition wall 8 that separates the drainage storage part 4 from the facility space 3 is provided with a water collecting basin 12 for introducing water that has entered the facility space 3 into the drainage pipe 9 and an inspection hole 13 for the drainage pipe 9. . The water that has entered the facility space 3 is introduced into the drain pipe 9 through the connecting pipe 20 from the water collecting tank 12 provided in the inner wall base. The facility space 3 is partitioned by providing a partition plate 21 inward of the catchment 12 in order to isolate the catchment 12 exposed on the bottom surface. Further, the drainage channel storage section 4 is provided with an exhaust cylinder 14 that discharges moisture inside thereof to the outside and a drainage pump 15 that discharges drainage of the drainage pipe 9 to the outside.
[0013]
As shown in FIG. 2, a common underground common space is provided between a plurality of pits 16, and a branching portion 17 for branching the cable 5 or the like to a building, a house, a store, or the like is provided at an appropriate place. ing. The hole 16 has a size including the cross-sectional shape of the underground common space 1 as shown in FIG. 3A, and has a manhole 18 at the top. In addition, a hole 19 for drawing out or introducing a cable such as a gas pipe, a water pipe, a power line or a telephone line is provided. In this example, the hole 19 is provided on the side wall or the top wall of the pothole 16, but may be provided on the bottom wall or the like, and is not particularly limited.
[0014]
Although the branch part 17 is provided in the side part of the underground common space 1 in the figure (b), you may make it the magnitude | size which covers the whole like the upper and lower sides of this underground common space 1, or the fistula 16. The lead-out location of the cable 5 etc. is not limited. Usually, the drainage from the drain pipe 9 provided in the drainage channel storage part 4 and the exhaust by the exhaust cylinder 14 in the drainage channel storage part 4 are discharged to the outside through the fistula 16 and the branch part 17.
[0015]
The boundary between the drainage channel storage section 4 and the facility space 3 is easy to flow into a water collecting basin 12 provided at the base of the peripheral wall of the underground space 2 as shown in FIG. 4 in order to facilitate drainage in the facility space 3. In this way, the central portion may be raised.
[0016]
Further, when the facility space 3 is partitioned into a plurality of floors by the partition walls 8 as shown in FIG. 5, the water collecting basins 12 are provided on each floor, and each water collecting basin 12 is connected to the drain pipe 9 by the connecting pipe 20. To drain. The floor surface of each floor of the facility space 3 may have a convex shape or a concave shape as described above to increase drainage efficiency.
[0017]
【The invention's effect】
As described above in detail, the underground common space according to the present invention includes a space for storing pipes, cables, and the like, and an underground space 2 having a circular section having a facility space 3 composed of these maintenance inspection spaces. The space 2 is divided into a facility space 3 and a drainage channel storage part 4 that stores the drainage pipe 9 by separating it below the facility space 3, and the drainage pipe is disposed on the upper surface of the drainage channel storage part 4. 9 catchment chambers 12 to the inner wall base of該地in space and connected by a connecting pipe 20 with the inspection hole 13 and the drainage tube 9, Rutotomoni provided exhaust waterway housing portion inside the drainage pump 15 and the exhaust pipe 14 of 4 The facility space 3 is partitioned by a partition plate 21 provided inward of the catchment basin 12 disposed on both sides of the inner wall base, and accommodates pipes, cables, etc. in the underground space Drainage channel with drainage function Isolated from the storage . Then , the water that has entered the facility space is introduced into the drainage pipe through the connecting pipe from the catchment basin, and is cut off from the facility space to be drained . Also, exhaust the moisture inside the drainage canal with an exhaust tube. Furthermore, since the facility space is partitioned from the drainage basin by the partition plate, the adverse effect on the storage facility can be significantly reduced.
[Brief description of the drawings]
FIG. 1 shows an example of an embodiment of an underground common space according to the present invention, wherein (a) is a schematic longitudinal sectional view, and (b) is a schematic transverse sectional view.
FIG. 2 is a schematic cross-sectional view showing a typical laying example of an underground common space.
3A is a schematic longitudinal sectional view of a fistula portion of FIG. 2, and FIG. 3B is a schematic longitudinal sectional view of a branch portion of FIG.
FIG. 4 is a schematic longitudinal sectional view showing another example of the embodiment of the underground common space according to the present invention.
FIG. 5 is a schematic longitudinal sectional view showing still another example of the embodiment of the underground common space according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Underground common space 2 Underground space 3 Facility space 4 Drainage channel storage part 5 Cable 6 Pipe 7 Maintenance inspection space 8 Partition wall 9 Drainage pipe 10 Primary lining layer 11 Secondary lining layer 12 Catchment 13 Inspection hole 14 Exhaust Cylinder 15 Drainage pump 16 Bore hole 17 Branching portion 18 Manhole 19 hole
20 Connecting pipe
21 Partition plate

Claims (1)

Pipe, in space and a circular cross section of the underground space 2 provided with a facility space 3 consisting of these maintenance space for accommodating the cable or the like, with the facility space 3該地in space 2, the lower of the facility space 3 isolation to a structure in which partition the drainage storage portion 4 for accommodating the drainage tube 9, connected by a connecting pipe 20 with the inspection hole 13 and the drainage tube 9 of the drainage tube 9 to the upper surface of the exhaust canal housing part 4 It said population water arranged catchment chambers 12 to the inner wall base in space該地, exhaust waterway housing part 4 inside the provided drainage pump 15 and the exhaust pipe 14 Rutotomoni, the facility space 3 on both sides of the inner wall base and An underground common space, which is partitioned by a partition plate 21 provided inward from the fence 12 .

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