JPH08120702A - Drainage device for outer wall of basement and its construction method - Google Patents

Abstract

(57) [Abstract] [Purpose] We propose a drainage device for the outer wall of a basement room that has excellent drainage performance and prevents the penetration of groundwater into the outer wall of a small basement room, and a construction method therefor. [Structure] A filter made of a non-woven fabric such as polypropylene having a closed cross section on both surfaces of a plate made of resin such as polypropylene or polyethylene in which a large number of truncated quadrangular pyramidal projections and depressions are formed on both surfaces to form a drainage gap. A drain material covered with a material is attached to the outer wall of the basement, and a perforated drainage pipe is placed along the lower edge of the plate material with the extra length of the filter material, and the tip of the drainage pipe communicates with the drainage channel. , A drainage device and construction method for the outer wall of the basement, which is created by backfilling the open and closed space around the basement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device for an outer wall of a basement and a method of constructing the same for preventing infiltration or leakage of groundwater into the outer wall of a basement.

[0002]

2. Description of the Related Art In recent years, regulations for installing basements have been relaxed, and there is a growing tendency to use non-living spaces such as conventional garage storage as living spaces such as a study, a music room, and a storage room.

At this time, there are problems such as moisture and dew condensation,
The biggest problem is that the water pressure of groundwater is applied to the outer wall of the basement and permeates into the basement.

In order to prevent the permeation of groundwater, when a sufficient space is provided in the underground part like a normal building, a solid waterproof layer is provided on the outer wall of the basement and a culvert for discharging the groundwater is provided. It is possible to take large-scale construction and take sufficient measures.

However, in the case of providing a basement in a small-scale building such as a private house, the large-scale construction as described above is generally impossible due to restrictions on the site area and construction cost.

Therefore, in such a case, a simple means such as attaching a waterproof sheet to the outer wall of the basement or applying a waterproof paint is adopted, or a drainage layer is provided on the outer side of the outer wall so that the pressure of the groundwater is reduced. It was designed to prevent penetration and prevent penetration.

On the other hand, the applicant of the present application has filed Japanese Patent Application Laid-Open No. 2-49814.
In the gazette, a continuous underground wall was proposed in which a drain material in which both sides of a plate material having an uneven surface were covered with a non-woven filter material was attached to the continuous underground wall to secure the water channel of groundwater.

[0008]

However, the method of attaching the sheet, applying the waterproof coating, or providing the drainage layer is a troublesome and complicated work in a limited narrow site and requires a long construction period. The drainage effect cannot be expected so much.

The above-mentioned continuous underground wall is for allowing groundwater to freely flow along the water vein thereof, and it is possible to use the drainage layer of the conventional method together, so that it is a dry space as a living space level. It cannot be applied as is to the outer wall of a small basement that requires.

The present invention is intended to solve the above problems, and an object thereof is to prevent groundwater from accumulating in the vicinity of the outer wall of the basement, prevent permeation of groundwater in the outer wall, and secure a dry basement space. Drainage system on the outer wall of the basement, and
An object of the present invention is to provide a construction method capable of installing a drainage device for the outer wall of a basement at a low cost with good workability even in a small site or a small building.

[0011]

According to a first aspect of the present invention, there is provided a drainage device for an outer wall of a basement, which comprises a plate member having a large number of irregularities forming a drainage gap and a drain member made of a filter material covering at least one outer surface of the plate member. The outer wall surface is attached to the outer wall surface of the basement with the outer side surface facing outward, and the perforated drainage pipe is covered with a filter material continuous from the drain material and arranged along the lower edge of the plate material.

According to a second aspect of the present invention, a plate material having a large number of irregularities forming a drainage gap and a filter material having at least an outer side surface thereof and a surplus portion protruding from one side edge of the plate material are temporarily fixed. Then, the drain material is formed, and the drain material is attached to the outer wall surface of the basement with the outer side surface facing outward, and the drainage pipe having a hole along the lower edge of the plate material is covered with the extra length portion of the filter material, It is characterized by arranging.

[0013]

EXAMPLES Examples of construction of this drainage device will be described below. FIG. 1 shows a plate material 1 constituting a drain material, which is a long material having a width of 1 m, on which both sides are formed a truncated square pyramidal concavo-convex portion 2 and 2 ', and a drainage gap 3 in which water freely flows is formed. ing.

FIG. 2 shows the drain member 4, and the drain member 4-1 shown in FIG. 2 (a) is a plate member 1 covered with a filter member 5 having a closed cross section that continuously surrounds both surfaces of the plate member 1. Yes, the width of the filter material 5 having this closed cross section is the plate material 1
Is larger than the width of the plate material 1, and one side edge portion thereof is a surplus portion 6 that extends from one side edge of the plate material 1. The filter material 5 is made of a non-woven fabric such as polypropylene and is temporarily fixed to the plate material 1, and the drainage gap 3 formed by the projections 2 and 2 ′ is interposed between the filter material 5 and the surface of the plate material 1.

The drain member 4-2 shown in FIG. 2 (b) is a plate member 1
The filter material 5 covering one surface of the above is temporarily fixed, and one side edge portion of the filter material is a surplus portion 6 protruding from one side edge of the plate material 1.

The drain member 4-3 shown in FIG. 2 (c) is a plate member 1.
The filter material 5 covering both surfaces is temporarily fixed, and one side edge portion of the filter material 5 on both surface sides is a surplus portion 6 protruding from one side edge of the plate material 1.

As shown in FIG. 3, the perforated drainage pipe 9 has a large number of through holes 10, the tip of which is connected to the drainage groove (not shown).

FIG. 4 shows the drain material 4-1 shown in FIG. 2 (a).
It is a drainage device for the outer wall of the basement constructed by using the drain material 4-1 attached to the entire surface of the outer wall 7, locked to a pin fixed to the surface of the outer wall 7, and the tip is bent and fixed. (Not shown). The top of the drain material 4-1 is located at a position slightly lower than the ground surface, and the lower end edge is located at the corner of the foot of the outer wall 7 which extends laterally, and the perforated drainage along the lower end edge. Pipe 9 is the extra length of filter material 6
It is configured by covering with.

FIG. 5 shows a drainage device constructed by using the drain material 4-1 similarly to FIG. 4, and the drainage pipe 9 is covered with an extra length portion 6 at the end portion of the footing 8 which extends laterally. Has been done.

FIG. 6 shows a waterproof device using the drain material 4-2 shown in FIG. 2 (b).
The drain material 4-2 is attached with the surface covered with the outside with the bottom edge of the plate material as the tip position of the footing 8 extending laterally to the lower end of the outer wall 7, and the drain pipe 9 is provided along the bottom edge. The extra length portion 6 covers and arranges it.

FIG. 7 shows a waterproof device using the drain material 4-3 shown in FIG. 2 (c), in which the drain material 4-3 whose both surfaces are covered with the filter material 5 is attached to the entire outer wall 7. The lower edge of the plate material is set as the tip position of the footing 8 extending to the lower end of the outer wall 7, and the drainage pipe 9 is provided with the extra length portion 6 along the lower edge.
It is configured by covering with.

The drain material 4-1 is covered on both sides of the plate material 1 with a continuous filter material.
In 4-3, since the extra length portion 6 easily exposes the edge portion of the plate material 1, it is possible to cut the plate material 1 to a desired size for construction while leaving the filter material 5 as it is.
It is more convenient to cut and use than.

In the above-mentioned construction example, the drain material and the drainage pipe are arranged in the space where the ground around the outer wall 7 has been excavated, and when this work is completed, the excavation space is backfilled.

In this embodiment, since the plate material 1 has a width of 1 m, when constructing an outer wall having a depth larger than this,
The lower end edge of the drain material at the upper position is overlapped and arranged on the upper end edge of the drain material at the lower position. In addition, the top of the drain material is set at a position slightly lower than the ground surface, and the lower edge is at the same level as the lower edge of the outer wall or less.

In order to keep the basement as a dry space, the plate material 1 does not have through holes for communicating between the front and back drainage cavities 3, 3 and the groundwater flows down inside the drainage cavity 3 outside the plate 1. However, the invasion and retention of water in the drainage space inside was prevented.

The top of the drain material 4 and the outer wall 7 may be tightly covered with, for example, a waterproof adhesive tape to prevent the inflow of fine earth and sand between the drain material 4 and the outer wall 7.

[0027]

FUNCTION AND EFFECT OF THE INVENTION The present invention has the above-mentioned structure. In this drainage device, the groundwater around the outer wall of the basement permeates the filter material 5 on the outer surface of the drain material 4 and flows down in the drainage void 3 on the outer surface of the plate material to the drain pipe 9 arranged along the lower edge. Collected, guided to a drain in a convenient location in the basement, via which it is reliably discharged. Therefore, the drainage device has excellent drainage performance, can prevent water from penetrating into the outer wall of the basement, and can secure a dry basement space.

Since the drain pipe 9 is arranged along the lower edge of the plate material 1 so as to be covered with the filter material 5 continuous from the drain material, the drain pipe 9 is efficiently collected by the water flowing through the drainage gap of the plate material 1, and the drain pipe and the drainage water are drained. It is also possible to prevent the occurrence of poor flow due to the infiltration of earth and sand into the void 3.

The construction method of this drainage device is that the drain material assembled by temporarily fixing the filter material to at least one surface of the plate material having the unevenness forming the drainage gap is brought to the construction site and attached to the outer wall surface of the basement. Since the drainage pipe can be covered with the filter material that is continuous from the drain material along the lower edge of the slab material and constructed, it can be constructed efficiently even in a small open space around the outer wall of a small basement.

Therefore, according to the present invention, the drainage device can be constructed with good work efficiency even in a small open space having a small outer wall of the basement, and the drainage device has excellent drainage performance.
It is possible to prevent water from penetrating into the outer wall of the basement.

[Brief description of drawings]

1A and 1B are a plan view and a cross-sectional view of a plate material.

FIG. 2 (a), (b), (c) is a drain material formed by temporarily fixing a filter material to a plate material.

FIG. 3 is a perspective view of a perforated drainage pipe.

FIG. 4 is a cross-sectional view of a drainage device for an outer wall of a basement constructed by using a drain material in which both sides of a plate material are covered with a filter material having a closed cross section.

FIG. 5 is a cross-sectional view of a drainage device for an outer wall of a basement constructed using a drain material in which both sides of a plate material are covered with a filter material having a closed cross-section.

FIG. 6 is a cross-sectional view of a drainage device for an outer wall of a basement constructed using a drain material in which one surface of a plate material is covered with a filter material.

FIG. 7 is a cross-sectional view of a drainage device for an outer wall of a basement constructed using a drain material in which both surfaces of a plate material are covered with a filter material.

[Explanation of symbols]

1 ... Plate material, 2, 2 '... Uneven portion, 3 ... Drainage space, 4 ...
… Drain material, 5 …… Filter material, 6 …… Extra length part,
7 ... Basement outer wall, 8 ... Footing, 9 ... Perforated drainage pipe, 10 ... Through hole.

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[Procedure amendment]

[Submission date] November 18, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

[0013]

EXAMPLES Examples of construction of this drainage device will be described below. FIG. 1 shows a plate material 1 made of synthetic resin such as polypropylene or polyethylene that constitutes the drain material.
It is a long one having a width of 1 m, and the concavo-convex portions 2 and 2'having a truncated quadrangular pyramid project from both sides thereof to form a drainage void 3 through which water freely flows.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

FIG. 6 shows the drain member 4-2 shown in FIG. 2 (b).
Is a drainage device using the drainage device 4-2 in which the drain material 4-2 is attached to the entire surface of the outer wall 7 with the surface covered with the filter material 5 as the outside, and the bottom edge of the plate material is laterally extended to the lower end of the outer wall 7. 8 and the drainage pipe 9 is covered with the extra length portion 6 along the lower edge thereof.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

FIG. 7 is a drain material 4-3 shown in FIG. 2 (c).
And a drain member 4-3 whose both surfaces are covered with the filter material 5 is attached to the entire surface of the outer wall 7, and the lower end edge of the plate material is extended to the lower end of the outer wall 7 and the tip position of the footing 8 None, the drainage pipe 9 is covered with the extra length portion 6 along the lower edge thereof.

Claims (2)

[Claims] 1. A drain material comprising a plate material having a large number of irregularities forming drainage voids and a filter material covering at least one outer surface thereof is attached to an outer wall surface of a basement with the outer one surface facing outward. A drainage device for an outer wall of a basement, wherein a drainage pipe having a hole along the lower edge of the plate material is covered with a filter material continuous from the drain material and arranged. 2. A drain material is formed by temporarily fixing a plate material having a large number of concavities and convexities forming drainage voids, and a filter material covering at least one outer surface of the plate material and having an extra length portion protruding from one side edge of the plate material. The drain material is attached to the outer wall surface of the basement with the outer side surface facing outward, and the drainage pipe having a hole along the lower edge of the plate material is covered with the extra length portion of the filter material and arranged. Construction method of drainage device for outer wall of basement.