JPH067837Y2 - Drainage structure of waste disposal site - Google Patents

Description

[Detailed Description of the Invention] << Industrial field of application >> The present invention relates to a drainage structure of a waste disposal site, and in particular, to a supporting member having a function of guiding leachate discharged from the waste to a drain. Regarding things

<Prior art> As is well known, landfill disposal is generally adopted as the final disposal of general waste and industrial waste, and such waste disposal sites are set up inland or in the mountains. Has been.

By the way, in the construction of this type of waste disposal site, for example,
A recess for introducing waste is provided by excavation or the like.

Then, when the waste is sequentially put into the formed recesses and compacted while applying the intermediate soil and the final soil is applied on the uppermost portion, the upper part of the disposal site is used as a park, a green space or the like.

However, if a waste disposal site is constructed in this way,
There was a problem that the upper part could not be used for a long period of time, or the input waste was scattered and deteriorated the surrounding environment.

Therefore, the present applicant has proposed a method for constructing a waste disposal site capable of solving such a problem in Japanese Patent Application No. 63-132595 (see Japanese Patent Laid-Open No. 1-304092).

The construction method of the waste disposal site according to this proposal is to construct an artificial ground surface that covers the upper part of the recess before the waste is input, in the recess into which the waste is input.

By the way, when the upper part of the recess is covered with the artificial ground surface in this way, the inside of the recess becomes an almost sealed space, and a facility for collecting and draining the leachate discharged from the waste is required. There was a technical issue to explain.

<< Problems to be solved by the invention >> That is, as the water collection and drainage facility, for example, it has been conventionally performed to lay a perforated pipe in the lower part or the middle part of the waste, or to provide a culvert, When gravity is added to the accumulated waste, the leachate moves horizontally, so the leachate cannot be collected and discharged efficiently.

Therefore, it is conceivable that the support members such as piles and columns supporting the artificial ground surface are hollow, and the outer periphery of the support member is provided with a through hole that communicates with the inside, and this is used as a water collection and drainage facility. However, since a large number of through holes must be provided in order to function as a water collection and drainage facility, there is a problem in that the strength of the support member decreases.

The present invention has been made in view of such problems, and an object thereof is to ensure a function as a facility for collecting and draining leachate without significantly lowering the strength of the supporting member. It is to provide a drainage structure for a waste disposal site.

<< Means for Solving Problems >> In order to achieve the above object, the present invention relates to a support member such as a pile or a pillar for supporting an artificial ground surface constructed on a recess into which waste is put, The support member is a hollow cylindrical main body portion, a porous coating layer adhered to a portion of the main body portion located in the recess, and a communication hole for communicating the inside of the main body portion with the coating layer. And a drainage groove formed of a water-permeable filter layer is provided on the recess so as to connect the support members located on the same row, and the drainage groove is formed on the main body portion of the support member on the row. It communicates with the inside.

The support member has a hollow cylindrical main body portion, an annular covering material attached to a portion of the main body portion located in the recess with a predetermined space from the outer periphery thereof, and the supporting member is bored in the covering material. You may comprise with many through holes.

<< Operation >> According to the above configuration, since the porous coating layer communicating with the inside of the main body of the supporting member is attached to the outer periphery of the supporting member, the leachate discharged from the waste is generated inside the coating layer. Since it is discharged downward through the through hole, it is possible to reduce the number of communication holes that allow the coating layer and the inside of the main body portion to communicate with each other.

Also, if a ring-shaped covering material is attached to the outer periphery of the main body portion with a space and a large number of through holes are bored in this covering material, this space portion serves as a drainage passage for the leachate. There is no need to provide a communication hole in.

Then, the waste liquid that has entered the main body portion flows down to the drain groove below it by gravity, and this drain groove collects the waste liquid from other supporting members located in the same row and discharges it to the outside of the recess. .

<< Embodiment >> Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show an embodiment of a drainage structure of a waste disposal site according to the present invention.

In the embodiment shown in the figure, the pile 10 is illustrated as a supporting member, and the pile 10 has a pile main body 10a made of reinforced concrete and the pile main body 10a as shown in the cross section in FIG.
And a porous coating layer 10b attached to the outer periphery of the.

A space 10c is formed in the center of the pile body 10a over the entire length in the axial direction thereof, and the pile body 10a has a communication hole 1 for communicating the space 10c with the coating layer 10b.
0d is provided in the radial direction.

The covering material 10 layer is made of, for example, high-porous glass wool or steel wool, and is provided in a portion exposed from the ground when the pile main body 10a is driven into the ground.

The usage of the pile 10 of the present invention having the above-described structure will be described. The pile 10 is used for constructing a disposal site for the waste 12 shown in FIG.

In the construction of the disposal site shown in the figure, first, the recess 14 for accommodating the waste 12 is formed by excavating the ground 16.

When the recess 14 is formed, a water shield sheet 18 made of synthetic rubber or synthetic resin is laid on the ground 16 in the recess 14.

Then, when the laying of the water blocking sheet 18 is completed, the pile 10 is placed.

In this case, the pile 10 is not provided with the covering layer 10b, and the hollow cylindrical pile body 10a provided with the communication hole 10d is provided.
The coating layer 10b is formed on the top of the pile body 10a after the tip portion of the pile body 10a is penetrated into the ground 16 to a predetermined depth.

Next, a water-permeable filter layer, for example, a drain groove 20 filled with gravel is provided on the water-blocking sheet 18 so as to connect the piles 10 located on the same row, and the drain groove 20 is formed on the pile body 10a. It communicates with the internal space 10c.

On the other hand, when the pile 10 is driven in a predetermined position, the artificial ground surface 2 supported by the pile 10 so as to cover the recess 14 above.
2, the artificial ground surface 22 is provided with a charging port 24 for charging the waste material 12 at an appropriate place, and a thin embankment 26 is constructed on the artificial ground surface 22.

When the disposal site is constructed as described above, the waste 12 is put into the recess 14 through the input port 24, and the put waste 12 is compacted by the bulltozer 28, and the inside of the recess 12 is sequentially filled. Is deposited from the bottom side.

At this time, the pile 10 is gradually buried in the waste 12, but the leachate discharged from the waste 12 moves horizontally in the waste 12 due to the weight of the waste 12 and is accumulated in the pile 10. After reaching and being filtered by the porous coating layer 10b, the communication hole 1
0d to reach the space 10c of the pile body 10a,
After flowing through the inside of 0c, the water is collected in the waste groove 20 and sent to a treatment facility (not shown).

In this case, in particular, even if the coating layer 10b is buried in the waste 12, the pores thereof are not completely closed, and the leachate discharged from the waste 12 passes through the inside of the coating layer 10b. Since it is discharged downwards, the leachate can sufficiently pass through even if the number of the communication holes 10d for connecting the coating layer 10b and the space 10c of the pile body 10a is reduced.
By providing 0d, a significant reduction in strength of the pile body 10a is avoided.

FIG. 4 shows another embodiment of the present invention, and only the characteristic points will be described below.

In the example shown in the figure, an annular covering material 30 is attached to the outer periphery of the pile body 10a in place of the covering layer 10b of the above embodiment, and the communication hole 10d of the pile body 10a is eliminated.

The covering material 30 is made of, for example, a thin steel plate or a synthetic resin plate, and is installed at a predetermined interval by providing partition walls 32 that come into contact with the outer peripheral surface of the pile body 10a.
A space 34 for draining liquid is formed between and the pile body 10a.

Further, the covering material 30 has a large number of through holes 36 penetrating therethrough.
Has been drilled.

Further, the covering material 30 is provided above the tip portion where the pile body 10a penetrates into the ground 16 and the space 3
4 is connected to the drain groove 20 as in the above embodiment.

When the pile 10 thus configured is installed so as to support the artificial ground surface 20, the leachate discharged from the waste 12 is discharged to the outside through the space 34,
In this case, since it is not necessary to provide a communication hole in the pile body 10a at all, the strength of the pile 10 is not reduced at all.

In addition, in the said Example, although the case where this invention was applied to the pile for waste disposal sites was illustrated, it may be a pillar which supports not only a pile but artificial ground.

<Effect of device> As described in the above embodiments, according to the drainage structure of the waste disposal site according to the present invention, it is discharged from the waste material without significantly lowering the strength of the member supporting the artificial ground surface. It is possible to collect the drained liquid through a support member such as a pile or a column, and further efficiently collect this drainage liquid by a drainage groove communicating with the support members on the same row and discharge it to the outside of the recess.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a support member used in the drainage structure of a waste disposal site according to the present invention, and FIG. 2 is a construction of a drainage structure of a waste disposal site using the support member. FIG. 3 is a sectional perspective view of a main part in the case of doing, FIG. 3 is an explanatory view of the main part of the drainage structure of FIG. 2, and FIG. 4 is a cross-sectional view showing another example of the supporting member used in the present invention. 10 ... Pile (supporting member) 10a ... Pile body 10b ... Coating layer 10c ... Space 10c ... Communication hole 12 ... Waste 16 ... Ground 20 ... Drainage groove 22 ... Artificial ground surface 30 ... Covering material 32 ... Partition wall 34 ... Space 36 ... Through hole

Claims (2)

[Scope of utility model registration request] 1. A support member such as a pile or a pillar for supporting an artificial ground surface constructed on a recess into which waste is thrown, wherein the support member is a hollow cylindrical main body portion and the main body portion is The support provided with a porous coating layer adhered to a portion located in the recess and a communication hole for communicating the inside of the main body portion with this coating layer, and the support located in the same row on the recess A drainage groove made of a water-permeable filter layer is provided so as to connect the members, and the drainage groove is communicated with the inside of the main body portion of the support member on the row. Drainage structure. 2. A support member such as a pile or a pillar for supporting an artificial ground surface constructed on a recess into which waste is thrown, wherein the support member is a hollow cylindrical main body portion, and An annular covering material attached to a portion located in the recess from the outer periphery thereof with a predetermined space, and a large number of through holes formed in the covering material are provided on the same row on the recess. Disposal, characterized in that a drainage groove made of a water-permeable filter layer is provided so as to connect the positioned support members, and the drainage groove is communicated with the inside of the main body portion of the support member on the row. Drainage structure of the waste disposal site.