JP2003285018A - Waste landfilling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste landfilling method capable of effectively putting the site of a landfill scheduled area to practical use and preventing filled-up waste from being exposed to the weather. <P>SOLUTION: In the waste landfilling method for filling up excavated land with waste, the landfill scheduled area 1a is divided into a plurality of lots 11 by a partition bank 21 and a movable shed 31 covering the upper part of the lot to be first filled up is installed to perform the landfilling of the lot where the movable shed is installed. After the surface after landfilling is subjected to waterproof treatment 5, the movable shed is moved to the adjacent lot to perform landfilling and surface waterproof treatment in this lot. The partition bank positioned between the lots after the completion of landfilling is excavated to perform landfilling and waterproof treatment at the place where the partition bank is excavated in the movable shed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of landfilling waste such as industrial waste in the excavated ground.

[0002]

2. Description of the Related Art An inland type final disposal site as a conventional final disposal site for industrial waste secures a landfill site by utilizing the vast landforms of the mountains. In carrying out landfill,
Landfilling is carried out sequentially on vast sites, so it will take a long time before the landfill is finally completed and the surface is waterproofed. There is also a method in which the planned landfill area is divided by a retaining wall or the like to provide a plurality of sections, and each section is landfilled.

[0003]

The above-mentioned conventional waste landfill method has the following problems. <B> Since the waste is left uncovered for a long period of time, it is difficult to carry out curing treatments such as preventing dust from scattering around the area and scattering and dispersion of the waste during landfill. In particular, when a method of stacking multiple layers of waste and coated soil in a landfill area that has been excavated and covered with a water-blocking sheet, maintenance and management requires a lot of cost and labor. <B> Until the landfill is finally completed and the surface is waterproofed, a large amount of contaminated water such as rainwater that has passed through the waste and leachate from the waste is generated, and the water treatment The facility costs a huge amount. <C> For all areas of the disposal site, since it takes a long time from the construction of the facility to the start of the landfill, there is a possibility that the waterproof sheet etc. may deteriorate before the landfill. In addition, a vast site may appear as a landfill for a long period of time, which may worsen the surrounding scenery. <D> When partitioning with an earth retaining wall, it is necessary to construct an earth retaining wall. If the excavation depth is deeper, as in the final disposal site, it will be necessary to construct a large retaining wall and construction costs will increase. Moreover, it is not always possible to say that the site is effectively utilized because waste cannot be filled in the place where the retaining wall is constructed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a method of landfilling wastes which can effectively utilize the site of the landfill planned area. . Another object of the present invention is to provide a waste landfilling method in which the landfilled waste is not exposed to wind and rain. Further, it is an object of the present invention to provide a waste landfill method that can reduce the amount of wastewater that requires purification treatment. The present invention achieves at least one of these objectives.

[0005]

In order to achieve the above object, the method of landfilling waste according to the present invention is a method of landfilling waste in the excavated ground. The planned area is divided into multiple sections by a partition wall, a movable roof is installed to cover the upper part of the area where landfill is performed first, and the area where the movable roof is installed is landfilled. After waterproofing the surface of the, the movable shed is moved to an adjacent section, landfill and surface waterproofing are performed in the section, and the partition wall located between the sections where landfilling is completed is excavated. The landfill and waterproof treatment are performed at the location where the partition wall is excavated in the movable upper chamber. Here, the excavation of each section may be performed before the landfill of the section starts. The excavation of the section may be performed before or after covering with the movable shed.

In addition, when the planed landfill area is substantially circular, the landfill planned area is divided into a plurality of sections by a partition wall, and the first landfill section is filled with the above-mentioned landfill planned area. A movable shed that covers the upper part of the compartment that can rotate about the center is installed, and the compartment in which the movable shed is installed is landfilled, and the surface after landfill is waterproofed, and then the movable shed To the adjacent compartment, perform landfilling and waterproofing of the surface in the compartment, excavate the partition wall located between the compartments where landfilling is completed, and place the partition inside the movable upper room. Landfill and waterproof treatment will be applied to the place where the bank was excavated.

[0007]

Embodiment 1 of the present invention will be described below with reference to the drawings.

<a> Planned landfill area The planned landfill area 1 is the site where the waste 4 will eventually be reclaimed. In the first embodiment, the case where the planned landfill area 1a is rectangular will be described as an example (see FIG. 2D).
A plurality of sections 11 are provided in the planned landfill area 1a. The section 11 is a landfill area partitioned by a partition wall 21. The number of the sections 11 can be arbitrarily set according to the size of the planned landfill area 1a and the manner of use. Further, it is preferable that the sizes of the sections 11 are as equal as possible. This is because it is convenient to cover the canopy with the movable shed 31 having the same size. The planned landfill area 1a may be excavated in advance to construct all the sections, or the other section 11b may be excavated in parallel with the reclamation of one section 11a. The partition wall 21 is divided into sections 11a and 11b.
It is a levee body made of unexcavated ground left in between. In the present invention, finally, the partition wall 21 is also excavated for landfilling.

<B> Movable Shed The movable shed 31 is a movable structure that serves as a canopy for the section 11 or the like that is being reclaimed. The movable shed 31 is installed to prevent the waste 4 from being exposed to wind and rain during landfill. For example, a known structure including a wall having an open bottom and a roof can be used. A carry-in port for carrying in the waste 4 is provided in a part of the wall. The structure of the roof is not limited to a flat shape, and may be a mountain shape or a shell shape. The movable roof 31 is configured to be movable by attaching wheels to its legs. For example, rails (not shown) are laid in parallel on both sides of the planned landfill area 1a in a direction in which the sections 11 are continuous. As a result, it is installed on the rail,
The movable shed 31 straddling the compartments can freely move between the compartments 11a and 11b.

<C> Waste landfill method First, the ground is excavated to construct at least one section 11a. The other section 11b can be constructed after the landfill of the section 11a is started. A movable shed 31 is installed so as to cover the section 11a for landfill (Fig. 1
(A) and FIG. 2 (a)). Installation of the movable shed 31
Either before or after excavation of the section 11a may be performed.
The partition 11a is a substantially sealed space by being surrounded by the partition wall 21 and the movable shed 31. For this reason, rainfall does not enter the compartment 11a that is being landfilled, and the landfilled waste 4 is not blown away by the wind.
After the landfill is completed in the first section 11a, the surface of the landfilled waste 4 is subjected to the waterproof treatment 5. Waterproof treatment 5
Is carried out by a known method such as laying a known waterproof sheet or constructing a waterproof layer with bentonite or asphalt. After the surface of the waste 4 is shielded by the waterproof treatment 5, the movable shed 31 is moved to the adjacent section 11b (see FIG. 1 (b) and FIG. 2 (b)). Similarly to the section 11a, the section 11b is also subjected to landfilling and waterproofing treatment 5 (see FIGS. 1C and 2C). After the landfilling of the two adjacent sections 11a and 11b is completed, the partition wall 21 for partitioning the sections is excavated, and the remaining portion is landfilled. Even at the time of this landfill, the movable shed 21 is arranged so as to cover the area for landfill (see FIGS. 1D and 2D).

[0011]

Second Embodiment Hereinafter, a second embodiment in which the planed landfill area 1b has a substantially circular plan shape will be described with reference to FIGS.

<a> Construction of compartments A plurality of compartments 12, inside the circular planned landfill area 1b,
13 is provided. The number of sections 12, 13 can be set arbitrarily,
FIG. 3 shows the case of division into two sections, and FIG. 4 shows the case of division into three sections. Partitioning between the sections 12 and 13 is performed by the middle partition walls 22 and 23 as in the first embodiment described above. For example, when dividing the planned landfill area 1b into two,
A partition 22 with a length equal to the diameter (see FIG. 3). A partition 23 with a radius of 3 when divided into three.
The planned landfill area 1b is partitioned by a, 23b, and 23c (see FIG. 4).

<B> Movable Shed The movable shed 32 is a structure that can be rotated and serves as a canopy for the sections 12, 13 and the like that are being landfilled. For example, section 1
When the planar shape of 2 is semicircular, the movable shed 32a having a semicircular planar shape is constructed (see FIG. 3). Further, when the planar shape of the section 13 is a fan shape, the movable roof 32b having a fan-shaped planar shape is constructed (see FIG. 4). Movable shed 32
The a and 32b are rotated about the center of the circular planned landfill area 1b.

<C> Waste landfill method (FIG. 4) Waste 4 is taken as an example when the planned landfill area 1b is divided into three.
The landfill method will be described. First, the landfill of the section 13a is started. The excavation of the other sections 13b and 13c may not be completed at the time of filling the section 13a. This is because the partition 13 can be constructed in parallel with the landfill work as in the first embodiment. Movable shed 3
Landfilling is performed with the section 13a covered by 2b. After the landfill, the surface of the waste 4 is waterproofed 5 (see FIG. 4A). Next, landfilling and waterproofing 5 of the adjacent section 13b is performed (see FIG. 4B). After the landfills of the adjacent sections 13a and 13b are completed, the partition wall 23a for partitioning the sections 13a and 13b is excavated. The movable shed 32b may be rotationally moved during excavation, before or after excavation, but at the time of landfilling, the partition wall 2
Position where 3a was located, namely new waste 4
It is placed at a position for landfilling (see FIG. 4 (c)). After completion of the landfill and waterproofing treatment 5 of the parting wall 23a, landfill of the section 13c is performed (FIG. 4).
(See (d)).

In the above description, the system is such that after the landfill of the two sections 13a and 13b is completed, the intermediate partition 23a between them is landfilled so that the landfill area is gradually expanded. However, it is also possible to perform reclamation for all the sections 13a, 13b, 13c in advance, and then excavate and reclamate the partition walls 23a, 23b, 23c later.

[0016]

Since the method of landfilling waste according to the present invention is as described above, the following effects can be obtained. <B> Waste can be filled in all of the planned landfill areas. Therefore, the valuable site can be effectively used. Further, since the landfill area can be gradually expanded, it is possible to suppress the appearance of a vast landfill over a long period of time. <B> The landfills are surrounded by movable sheds and partition dikes, so the waste is not exposed. Therefore, there is no scattering or diffusion of waste during landfill. <C> Since rainfall that blows into the compartment before waterproofing can be blocked, the amount of wastewater that requires purification can be reduced. Therefore, the cost of the water treatment facility can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a waste landfill method of the present invention.

FIG. 2 is a plan view of an embodiment of a waste landfill method corresponding to FIG.

FIG. 3 (a) is a plan view when a circular landfill planned area is divided into two. (B) Sectional drawing at the time of dividing a circular planned landfill area into two.

FIG. 4 is a plan view of an embodiment of a waste landfill method when a circular landfill planned area is divided into three parts.

[Explanation of symbols]

1 ... Planned landfill area 11 ... division 12 ... 13 ... 21 ... 22 ... 23 ... 31 ... Movable shed 32. Movable shed 4 ... Waste 5 ... Waterproofing

Claims (2)

[Claims] 1. A method of landfilling waste in an excavated ground, wherein a planned landfill area is divided into a plurality of sections by a partition wall, and a movable type covering the upper part of the section where landfill is performed first. Install a shed, reclaim the area where the movable shed is installed, move the movable shed to an adjacent area after waterproofing the surface after landing, and reclaim the land in the area. The surface is waterproofed, the partition wall located between the completed landfills is excavated, and the location where the partition wall is excavated in the movable upper room is reclaimed and waterproofed. How to reclaim things. 2. A landfill method for landfilling waste in an excavated ground, wherein a planned landfill area having a substantially circular plan shape is divided into a plurality of sections by a partition dike, and landfilling is performed first. In the section, install a movable shed that covers the upper part of the section that can rotate about the center of the planned landfill area, and reclaim the section with the movable shed installed. After the waterproof treatment, the movable shed is rotationally moved to the adjacent section, the landfill and the surface are waterproofed in the section, and the partition wall located between the sections where the landfill is completed is excavated, A method for landfilling waste, wherein landfilling and waterproofing are performed in a place where the partition wall is excavated in the movable upper room.