JP4074401B2 - Waste disposal site - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waste disposal site having a protective layer.
[0002]
[Prior art]
FIGS. 7 to 10 are cross-sectional views showing an example of a waste disposal site for depositing and disposing of industrial waste. In each figure, 1a is an excavation part in which the ground 1 is excavated in a concave shape, and 2 is an excavation. A water shielding layer 3 covering the surface of the part 1a, 3 is a water shielding sheet laid on the water shielding layer 2, and 4 is laid on the upper side of the slope 5 of the water shielding sheet 3 to protect the water shielding sheet 3. The protective mat 6 is protective sand that is deposited on the bottom 7 side of the water-impervious sheet 3 and protects the sheet 3.
[0003]
The water-blocking layer 2 is usually formed by mixing agglomerates such as sand and gravel as main materials, a low water-permeable material including bentonite and kaolin, and a solidified material such as cement that hardens them with a mixer. The water-impervious structure material is formed as a water-impervious layer 2 by placing the impermeable-structure member. The excavation part 1a and the slope 5 are not actually flat, and there are irregularities due to deformation of natural ground such as rocks as shown in FIG. 9 and FIG. 10, and the surface is flattened on the irregularities. A water layer 2 is built.
[0004]
The surface of the water shielding layer 2 is smoothed, and the water shielding sheet 3 is laid in close contact. A protective mat 4 made of a non-woven fabric having a thickness of about 10 mm is laid on the sheet 3, and protective sand 6 is placed. It will be completed as a waste disposal site. The protective mat 4 has light shielding performance and prevents deterioration of the water shielding sheet 3 by preventing heat and ultraviolet rays from reaching the water shielding sheet 3.
[0005]
After the waste disposal site is completed as shown in FIG. 9, in order to dispose of the waste at this disposal site, the protective earth and sand are piled up at the corners 8 of the protective mat 4 and the protective sand 6, and the slope of the slope 5 Disposal is carried out while providing a covering soil 9 up to a height that can stand on its own without breaking down. That is, the surrounding soil of the protective sand 6 is surrounded by the covering soil 9 and a sharp member such as a square member 12 or a pipe, an angle, or a nail included in the deposit 10 itself, or a heavy machine for leveling the deposit 10 is impermeable to water. In a state where the sheet 3 is protected by the covering soil 9 so as not to be damaged, a deposit 10 such as waste is deposited on the protective sand 6.
[0006]
The deposit 10 put on the protective sand 6 is leveled by heavy machinery, but if the heavy machinery comes into contact with the protective mat 4, the water shielding sheet 3 is damaged. For this purpose, a cover soil 9 is provided to protect the water-impervious sheet 3, work is performed with heavy machinery, and deposits 10 are deposited.
[0007]
If the deposition is continued, the deposit 10 is likely to exceed the cover soil 9. Therefore, as shown in FIG. 10, as shown in FIG. , And deposit 10 is deposited. If the deposition is continued, the deposit 10 is likely to exceed the covering soil 11, so that the protective earth and sand were put on the covering soil 11 so as to be in contact with the protective mat 4, and the covering 10 was further provided to deposit the deposit 10. Thus, the troublesome work of continuously depositing the protective earth and sand so as to be higher than the deposit 10 so as to surround the deposit 10 and depositing the deposit 10 has been performed.
[0008]
[Problems to be solved by the invention]
According to the conventional waste disposal site, first, the troublesome labor of firstly depositing the covering soils 9 and 11 in the process of discarding the deposit 10 has been required. Secondly, since the covering soils 9 and 11 are weak in strength and tend to collapse along the slope 5, the covering soil 9 having a thickness so as to be always higher than the deposit 10 by continuously depositing the protective earth and sand in an amount capable of being independent. In order to perform the troublesome work of installing the cover soils 11 and 11, it takes time to build the cover soils 9 and 11, and the deposit 10 cannot be disposed of in a relatively short time. Thirdly, since the water shielding sheet 3 is irradiated with the direct sunlight, the water shielding sheet 3 is transformed by the ultraviolet rays contained in the direct sunlight, so that the water shielding performance is not deteriorated. Although the mat 4 covers the impermeable sheet 3, the upper portion 13 of the impermeable sheet 3 that is not covered with the covering soil 9, 11 may be turned by a small animal such as a bird, expansion / contraction due to climate change, It had the fault that the maintenance management of the impermeable sheet 3 was troublesome.
[0009]
The present invention has been made in order to solve the above-mentioned problems, and it is possible to deposit the deposit 10 on the disposal site easily and in a relatively short time without the need to construct the cover soils 9 and 11, and for birds and the like. Special management to cope with the small animals and the expansion and contraction due to climate change.
[0010]
[Means for Solving the Problems]
The waste disposal site according to claim 1 of the present invention is a waste disposal site configured by providing a water shielding sheet, and formed by spraying sand and continuous fibers onto the surface of the water shielding sheet. The protective layer has high pressure water at the same location as the surface of the water-insulating sheet to which the sand is sprayed so that the sand and continuous fibers are mixed when the sand is sprayed onto the surface of the water-insulating sheet with compressed air. It is formed by spraying continuous fibers.
[0011]
The waste disposal site according to claim 2 of the present invention is such that a greening layer formed by spraying fiber-containing sand is formed on the protective layer.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
Embodiment 1 FIG.
1 to 2 are cross-sectional views showing an example of a waste disposal site according to Embodiment 1 of the present invention, and the same components as those in FIGS. 7 to 10 are denoted by the same reference numerals.
In this case, 21 is a protective layer formed by spraying continuous fibers 22 and sand 23 on the surface of the water-impervious sheet 3, 24 is spraying continuous fibers 25, sand 26, and soil improvers such as fertilizer on the protective layer 21. The attached greening layer 27 is a plant vegetated on the greening layer 24. A protective layer A having a light shielding property formed from the protective layer 21 and the greening layer 24 is provided on the surface of the water shielding sheet 3.
The protective layer 21 and the greening layer 24 using the sands 23 and 26 having high light-shielding properties block the light so that the direct sunlight does not enter the water-impervious sheet 3, thereby preventing the water-impervious sheet 3 from being transformed. 3 so as not to deteriorate the water-insulating performance of 3 and to mix the fibers 22 and 25 made of about 1% polyester with the sands 23 and 26 to supplement the strength of the protective layer 21 and the greening layer 24. When the work is performed on the water-impervious sheet 3, or the deposit 10 such as waste is protected so as not to damage the water-impervious sheet 3.
By mixing the fibers 22 and 25, the particles 23 and 26 are bonded to each other by friction, and the looped or crossed fibers 22 and 25 prevent the relative movement of the sands 23 and 26, thereby increasing the strength. It is reinforced.
[0014]
The protective layer A is constructed in the same manner as in the prior art by laying the water-impervious sheet 3 in a concave shape, putting protective sand 6, and then building the protective layer 21 and the greening layer 24 on the surface of the water-impervious sheet 3. To do.
[0015]
An apparatus for spraying the protective layer 21 and the greening layer 24 will be described. As shown in FIG. 3, 31 is a sprayer for mixing sand 23 and 26, 32 is a compressor for supplying compressed air to the sprayer 31, 33 Is a hose through which compressed air mixed with sand 23 and 26 passes and is connected to the sprayer 31, 34 is connected to the hose 33, an ejector for determining the spraying direction of the sand 23 and 26, and 35 from the ejector 34 to the sand 23 and 26. 36a is a tank for storing water 36 for blowing the fibers 22 and 25, 37 is a high pressure pump for increasing the pressure of the water 36, 38 is a hose through which the high pressure water 36 passes, 39 is high pressure water 36 from the hose 38, An ejector that mixes the fibers 22 and 25, 40 is a management device that manages the supply amount of the fibers 22 and 25 to the ejector 39, and 40 a is a fiber 22 that is fed to the management device 40 Thread feeder 5 is wound, 41 blowing the fibers 22, 25 is placed on the high-pressure water 36 nozzle, 42 is a generator supplying power to the sprayer 31 and the high-pressure pump 37.
[0016]
The method of building using the apparatus which sprays the protective layer 21 on the surface of the water-impervious sheet 3 will be described. As shown in FIG. 4, the fibers 22 are compressed from the nozzle 41 so as to be mixed with the sand 23 when the compressed air is applied from the nozzle 35 and sprayed onto the surface of the water shielding sheet 3 on the upper side of the slope 5. The high pressure water 36 is sprayed on the same part of the water shielding sheet 3. When the fibers 22 are blown with compressed air, the fibers 22 fly upward, so that the mixed water containing water 36 is blown.
[0017]
Similarly, when the greening layer 24 is sprayed on the protective layer 21, a soil improver is mixed with the sprayer 31 so as to include nutrients in addition to the sand 26, and the sand 26 with improved soil is nozzled. When compressed air is applied from 35 and sprayed onto the surface of the protective layer 21, the fiber 25 is sprayed together with the high-pressure water 36 from the nozzle 41, and after the greening layer 24 is sprayed, the surface of the sand 26 is smoothed with a spatula or the like. To smooth. Since the fibers 22 and 25 are sprayed together with the water 36, it is preferable that the fibers 22 and 25 are continuous and continuous. The greening layer 24 is constructed so that the plant 27 can be grown on the greening layer 24, and the disposal site is completed.
[0018]
The protective layer 21 and the greening layer 24 are stronger than the conventional cover soils 9 and 11 because the sands 23 and 26 and the fibers 22 and 25 are tightly coupled, and may collapse along the slope of the slope 5. It is possible to stand by itself and easily cover all of the slope 5, and the water shield sheet 3 is not exposed and can be built on the slope 5 with a desired thickness in one construction.
[0019]
Since there is strength, the protective layer 21 and the greening layer 24 can be applied with a thinner layer thickness than the cover soils 9 and 11, and since the layer thickness is thin, the capacity for depositing the deposit 10 can be increased.
[0020]
After the disposal site is completed, as shown in FIG. 5, the deposit 10 is transported and deposited on the protective sand 6 and the greening layer 24 with a heavy machine. When the disposal site is completed, since the protective layer 21 and the greening layer 24 are completed before that, even if the heavy machinery works on the greening layer 24, the water shielding sheet 3 is protected by the protective layer 21. Therefore, it is not necessary to provide the cover soils 9 and 11 because the water shielding sheet 3 is not damaged.
[0021]
Even if the squares 12 are mixed in the deposit 10, the protective layer 21 and the greening layer 24 are strong, so even if the squares 12 fall on the greening layer 24, they stick into the surface of the greening layer 24 and partly However, since the water-impervious sheet 3 is covered with the protective layer 21, the tip of the square member 12 does not pierce the water-impervious sheet 3 and is not damaged.
[0022]
The yield strain of the protective layer 21 and the greening layer 24 is about 6 to 10%. Compared with the yield strain of only the sands 23 and 26 being 2 to 6%, local strain occurs due to non-uniform settlement. Even if it is, it can deform | transform following this distortion and it prevents that the water-impervious sheet 3 is exposed.
[0023]
The water permeability coefficient of the protective layer 21 and the greening layer 24 is almost the same as the water permeability coefficient of only the sands 23 and 26 because the fibers 22 and 25 of about 1% are mixed, and has the same water shielding performance.
[0024]
In the greening layer 24, the sand 26 and the fibers 25 are tightly coupled, so even if rain flows and water flows on the surface, a small portion of the sand 26 flows out, but the fibers 25 protect the inside. Therefore, it does not collapse along the slope of the slope 5, and the greening layer 24 does not change even if exposed for a long time. Furthermore, in the greening layer 24, the roots of the plants 27 are intricately entangled with the fibers 25, and the strength is mutually increased. Since the greening layer 24 is provided on the protective layer 21, the same kind of plant 27 as the local area may be used, and the landscape is not destroyed in conformity with the surrounding landscape.
[0025]
As shown in FIG. 6, all of the slope 5 can be covered with sand 23 and 26 having higher light blocking properties than the protective mat 4, so that the plant 27 blocks the light even when direct sunlight enters the greening layer 24. The light is blocked by the sand 26 of the greening layer 24. Therefore, the direct sunlight is absorbed by the greening layer 24, the direct sunlight does not reach the water shielding sheet 3, the water shielding sheet 3 is not transformed, and the water shielding performance is not deteriorated for a long time. Water shielding performance can be demonstrated.
[0026]
The sand 23 and 26 may be purchased sand or locally generated soil that is generated when the ground 1 is excavated into a concave shape. This locally generated soil is dried to form sand. The protective layer 21 and the greening layer 24 may be constructed using this sandy locally generated soil.
[0027]
In addition, if cement is mixed with sand 23 when spraying the protective layer 21, if this cement develops strength, the roots of the plant 27 of the greening layer 24 will not enter the protective layer 21, and the water shielding sheet. 3, roots do not enter the plant 27 and are not damaged.
[0028]
In addition to polyester, fibers 22 and 25 supplementing strength are nylon, polypropylene, polyvinyl chloride fiber, glass fiber, silicon carbide fiber, carbon fiber, ceramic fiber, steel fiber, polyester, cotton yarn, hemp, rayon, acetate. Any one or more or all of fibers, silk, hair, etc. may be used.
[0029]
As described above, the protective layer 21 and the greening layer 24 are sprayed by spraying sand 23 and 26 having high light shielding properties, in which the fibers 22 and 25 are mixed, onto the surface of the water shielding sheet 3 so that direct sunlight does not enter the water shielding sheet 3. Since the protective layer A having a light shielding property formed from is provided, even if direct sunlight enters, the protective layer 21 and the greening layer 24 block direct sunlight, and this sunlight does not reach the water shielding sheet 3. Therefore, the water shielding sheet 3 is not transformed by the ultraviolet rays of sunlight, and the water shielding performance of the water shielding sheet 3 can be prevented from being deteriorated.
In addition, a protective layer A is provided on the water-impervious sheet 3, and fibers 22 and 25 that reinforce strength are mixed in the sand 23 and 26 in the protective layer A, so that heavy machinery works on the protective layer A. Even if it performs, even if the water shielding sheet 3 is not damaged and the square material 12 is contained in the deposit 10, this square material 12 does not damage the water shielding sheet 3, and can protect.
[0030]
【The invention's effect】
As described above, according to the first aspect of the present invention, the protective layer is provided with a protective layer formed by spraying sand and continuous fibers on the surface of the water shielding sheet , and the protective layer is made of sand with compressed air. Because it was formed by spraying continuous fibers with high-pressure water on the same location as the surface of the water-impervious sheet that sprays sand so that the sand and continuous fibers are mixed when sprayed on the surface of the water-impervious sheet , Since it is not necessary to deposit soil every time the waste is deposited to a certain height, disposal of the waste can be done easily and in a relatively short time, and it is special for small animals such as birds, expansion and contraction due to climate change, etc. There is no need for consideration, and maintenance management becomes easy.
[0031]
According to the invention described in claim 2, since the greening layer formed by spraying fiber sand is formed on the protective layer, the covering soil is deposited each time the waste is deposited to a certain height. Because it is not necessary, disposal of waste can be done easily and in a relatively short time, and special care is not required for small animals such as birds, expansion and contraction due to climate change, etc. Vegetation is possible and the surrounding landscape will not be destroyed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a waste disposal site according to Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view illustrating a configuration of a waste disposal site according to the first embodiment.
FIG. 3 is a block diagram showing an apparatus for spraying a waste disposal site according to the first embodiment.
FIG. 4 is a cross-sectional view showing spraying of a waste disposal site according to the first embodiment.
FIG. 5 is a cross-sectional view in which waste is deposited in the waste disposal site according to the first embodiment.
6 is a cross-sectional view of the waste disposal site according to Embodiment 1 when it is irradiated with direct sunlight. FIG.
FIG. 7 is a cross-sectional view showing a configuration of a conventional waste disposal site.
FIG. 8 is a cross-sectional view showing a configuration of a conventional waste disposal site.
FIG. 9 is a cross-sectional view in which waste is deposited in a conventional waste disposal site.
FIG. 10 is a cross-sectional view in which waste is deposited in a conventional waste disposal site.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ground, 1a Excavation part, 2 Impermeable layer, 3 Impermeable sheet, 5 Slope, 6 Protective sand, 21 Protective layer, 22 Fiber, 23 Sand, 24 Tree planting layer, 25 Fiber, 26 Sand, 27 Plant, A Protection layer.

Claims (2)

In a waste disposal site configured with a water-impervious sheet, the surface of the water-impervious sheet is provided with a protective layer formed by spraying sand and continuous fibers, and the protective layer impermeable sand with compressed air It is formed by spraying continuous fibers with high-pressure water on the same location as the surface of the water-impervious sheet that sprays sand so that the sand and continuous fibers are mixed when sprayed on the surface of the sheet Waste disposal site. 2. The waste disposal site according to claim 1, wherein a greening layer formed by spraying fiber-containing sand is formed on the protective layer.

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