JP4435393B2 - Tomori method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This is a method of dewatering high-moisture deposits containing a large amount of water, such as sludge, and effectively using the sediment components that remain after dehydration.
[0002]
[Prior art]
For example, high moisture deposits such as sludge accumulated in the bottom layer of rivers and lakes are difficult to dispose of when excavated during dredging, etc., and if left undisturbed will affect the surrounding environment. Therefore, various methods for treating such highly water-containing deposits have been proposed.
[0003]
In this method, a highly water-containing deposit such as sludge is placed in a bag having water permeability, and this is piled up and dehydrated.
The other method is a method of mechanically dehydrating a highly water-containing deposit such as sludge using various press machines or centrifuges.
There is a method of directly solidifying and discarding mud using a solidifying agent such as lime or cement.
[0004]
[Problems to be solved by the invention]
However, in the dehydration method using the bag, each bag is easily moved by the flow of the high water content deposit when the high water content deposit is charged or filled into the water permeable bag. Therefore, not only is the position difficult to determine, but in particular, if a bag filled with high water content deposits is placed on top of a bag that is filled with high water content deposits, The water separated from the high water content deposits leached from the inside of the bag body acts as a surface active agent to reduce the frictional resistance of the bag body surface. It is difficult to pile up the bag body in the planned position by dropping into the lower bag body due to the weight of the earth and sand, or pushing the lower bag body located at the end to the side, etc. , Take multi-stage loading To enable construction, it has been consuming problem extra costs caused the need to separately provide a facility such as earth retaining structures and pressing embankment temporary.
[0005]
In addition, there is a problem that a method of dehydrating using a machine or a method of solidifying chemically is expensive.
[0006]
The present invention is a method of embedding that can be used for parking lots, sidewalks, etc., with dewatering high-moisture deposits such as sludge by a simple method and using sand and sand originating from dehydrated sludge as a core, etc. Is to provide.
[0007]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems, and the gist of the present invention is to open a container having a plurality of holes on the surface and a taper whose side surface becomes narrower toward the bottom surface in the vertical and horizontal directions. Forms a pile of containers that are superposed upward, fills the container with high moisture deposits such as sludge, and moisture contained in the high moisture deposits oozes out from the holes provided on the container surface to deposit high moisture in the container After the volume of the object is reduced, the step of filling the high water content deposit again is repeated a plurality of times, and then the earth is piled up with the container pile as a core.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail with reference to the drawings. As the container, as shown in FIGS. 1 and 2, a container having a large number of holes on the surface and configured such that the side surface becomes narrower from the upper open surface toward the bottom surface is used. The shape of the container is not limited as long as the mouth of the container, that is, the open surface is similar to the bottom surface, and the bottom surface is narrowed by the taper provided on the side surface.
When containers of this shape are stacked vertically and horizontally, an appropriate gap is opened between the containers due to the taper provided in the container, and pipes or hoses are inserted from the side through the gap, and each container is sludged. Can be filled.
[0009]
The method of combining the containers is not limited as long as the container can be filled with sludge. As an example of the stacking method, there are a method of stacking with the upper edge of the lower adjacent container as a base, and a method of vertically combining using a suitable connector.
[0010]
For example, the former is combined and stacked as shown in FIG. 3, and the latter is combined and stacked as shown in FIGS. 5, 7, and 9, for example.
3 and 4 are a front view and a plan view, respectively, of an example in which rectangular containers are stacked, but by stacking in this way, the container crest has a substantially triangular gap due to the taper of the side of the container. Is formed. Each container can be filled with sludge through a pipe or a hose. Containers can be fixed vertically and horizontally as required. For example, to prepare a joint provided with projections at four locations at right angles to the vertical direction to each other in the square plate, provided with a hole that can be inserted is the projection on the container on the edge, a hole that can be the projection is inserted into the bottom of the container Just keep it.
[0011]
5, FIG. 7, and FIG. 9 are cross-sectional views of container piles stacked using a connector, and FIGS. 6 and 8 are plan views thereof . These are methods in which the containers are stacked on the central axis as shown in the figure. For this purpose, the containers are overlapped with each other with a gap in the vertical direction using an appropriate connector. The connector shown in FIGS. 5 and 7 may be provided with through holes as appropriate so that the containers do not adhere to each other and the sludge flows downward. Even in the case where the projection is inserted between the projections as shown in FIG. 9 to be described later, it is possible to provide the connector with a large number of holes / slits so that the sludge falls.
[0012]
Although the connector is illustrated as being used on the side surface (FIGS. 5 and 6) or the upper edge (FIGS. 7 and 8) of the container, it can be supported from the bottom of the container. That is, the shape of the container is not limited as long as the containers are not in close contact with each other and are fixed in a state where a gap is opened on the wall surface.
[0013]
FIG. 9 is an example of how to stack containers having protrusions on the bottom of the container. The connecting tool used in this case may be one having an upper portion inserted into the container projection and a lower portion having a hole into which the tip of the container projection can be inserted. Even such a container can be stacked as shown in FIGS.
[0014]
Containers stacked in the vertical direction are further arranged in the horizontal direction to form a container crest. The containers arranged in the lateral direction can be fixed by using an appropriate connector at a portion where they are in contact with each other.
[0015]
Fill the container in the container pile with sludge, repeat the process of filling the sludge again several times after the moisture contained in the sludge has leached from the hole provided on the container surface and the sludge volume in the container has decreased, The resulting soil is filled.
Even if the said container is a bowl, it may become a container of the same shape as a result of combining a plate and a pipe with many holes, or may connect many containers. Further, the shape may be a polygon or a circle with an open surface, but a quadrangular shape is preferable in view of stools fixed to each other.
[0016]
The container is not limited to a container having a flat bottom surface. As shown in FIG. 2, the container may have a protrusion protruding from the bottom. In other words, any shape can be used as long as the container can be superposed on top and bottom.
[0017]
Although it is preferable to provide a fine hole so as to be a filter, the hole provided in the container may have a hole large enough to maintain the strength of the container. In this case, a cloth or the like that becomes a sludge filter may be laid in the container.
[0018]
The material of the container is not limited. However, when maintaining the strength of the embankment in the container pile, it is preferably buried in the ground, and is preferably made of cement or plastic. It is preferable to use a polyolefin such as polypropylene or polyethylene, or a plastic such as polystyrene, which is not affected by moisture due to handling convenience.
[0019]
The earth and sand filled in the container pile is covered with the embankment as it is. Although the filled earth and sand itself cannot be expected in terms of strength, since the container itself has the strength, its upper part can be used as it is for applications such as sidewalks, promenades, and parking lots that do not require much load.
【The invention's effect】
Since the containers are combined and filled with sludge, the shape of the container can be maintained. Since each can be fixed with a connector as required, there is strength. Therefore, the top of the earth can be used for applications that do not require much load, such as parking lots, sidewalks, and promenades.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a container according to the present invention.
FIG. 2 is another conceptual diagram of the container of the present invention.
FIG. 3 is a cross-sectional view of Example 1 illustrating the stacking of containers of the present invention.
4 is a top view of the stack of FIG. 3;
FIG. 5 is a cross-sectional view of Example 2 showing the stacking of containers of the present invention.
6 is a top view of the stack of FIG.
FIG. 7 is a cross-sectional view of Example 3 illustrating the stacking of containers of the present invention.
8 is a top view of the stack of FIG.
FIG. 9 is a cross-sectional view of Example 4 illustrating the stacking of containers of the present invention.
[Brief description of symbols]
21 container pile 11 container 12 connector

Claims (1)

Forms a pile of containers with a large number of holes on the surface and a taper whose side faces become narrower toward the bottom, with the opening facing up, down, left, and right, and the container is filled with high water content deposits After the moisture contained in the high moisture content oozes out from the holes provided on the surface of the container and the volume of the high moisture content deposit in the container is reduced, the process of filling the high moisture content deposit again is repeated several times. A method of filling, characterized by depositing with a container mountain as a core.

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