JP5442152B1 - Waterproof structure for inorganic waste and method for forming the same - Google Patents

Abstract

A waterproof structure for inorganic waste that can prevent contact of rainwater with the side surface of a compacted molded body layer is provided.
A waterproof structure for inorganic waste is laid on a first waterproof structure 12 disposed between an inner peripheral surface of a retaining wall 1 and a compacted molded body layer 22, and the consolidated molded body layer 22. Second waterproof structure 4 is provided. The compacted body layer 22 has a recess 22a on the upper surface. The second waterproof structure 4 includes a covering portion 42 that covers the peripheral edge of the compacted molded body layer 22, and a bent portion that is formed on the retaining wall 1 side of the covering portion 42 and is bent upward along the retaining wall 1. 41 and a fixing portion 43 formed on the inner peripheral side of the covering portion 42. The end portion of the bent portion 41 is welded to the first waterproof structure 12, and the end portion of the fixing portion 43 is disposed in the concave portion 22a of the compacted molded body layer 22, and the cement kneaded charged into the concave portion 22a. It is fixed by the object 6.
[Selection] Figure 3

Description

  The present invention relates to a waterproof structure for inorganic waste and a method for forming the waterproof structure for preventing contact between a compacted body obtained by landfilling an embankment material containing inorganic waste and rainwater at a final disposal site where the waste is landfilled. About.

  Conventionally, final landfill sites for landfill disposal of waste are established and operated in Japan based on the structural standards and maintenance standards defined in the Waste Disposal and Cleaning Law. The waste brought to the final disposal site is disposed of in landfill according to the waste classification stipulated in the law.

  The inventor of the present application forms a cement solidified material using a banking material in which cement and inorganic waste are kneaded in a section where such landfill disposal is performed, and finally the entire section is solidified by the cement solidified material. The technique which obtains a compacting body as a reproduction | regeneration ground is disclosed (refer patent document 1).

  In the technology, the compacted compact forms a unit section by a steel plate or a temporary dam in a section where landfill disposal is performed, and a unit compacted compact is formed by repeatedly charging and compressing the filling material in the unit section. The unit compacted compact can be obtained by spreading the compacted compact in the horizontal direction to form a compacted compact layer, and laminating the compacted compact layer.

  In addition, the inventor of the present application is to provide a retaining wall and a compacting molding for defining a section for landfill disposal in order to prevent harmful substances in inorganic waste contained in such a compacting compact from eluting into rainwater. A technique is disclosed in which a waterproof structure is provided between the body and between the compacted compact and the covering soil covering it to prevent contact between the compacted compact and rainwater (see Patent Document 2).

Japanese Patent No. 4317260 Japanese Patent No. 4397050

  Here, the inventor of the present application has made a unit compacted compact, a compacted compact layer, and rainwater in the process of manufacturing unit compacted compacts and compacted compact layers one after another by a final test site. Has been found to be desirable to prevent contact.

  Moreover, when this inventor uses the technique currently disclosed in patent document 1, since intrusion of rain water can be prevented between unit compacting compacts or between compacting compacts, a compacting compact layer It was also found that it is important to prevent rainwater from entering between the wall and the retaining wall, specifically, contact of rainwater with the side surface of the compacted body layer.

  This invention is made | formed in view of the above point, and it aims at providing the waterproof structure for inorganic waste which can prevent the contact of the rainwater with respect to the side surface of a compacting molded object layer, and its formation method. .

In order to achieve the above object, the waterproof structure for inorganic waste according to the present invention is formed by laminating a compacted molded body layer obtained by filling a banking material containing inorganic waste in a section formed by a retaining wall. A waterproof structure for inorganic waste that prevents contact between the compacted compact and rainwater, a lower compacted compact layer, and an upper compacted compact layer formed on the lower compacted compact layer, second waterproof structure and the first waterproof structure, laid in the lower compacting element layer disposed between the inner peripheral surface of the retaining wall and the lower the compacting layer and the upper lateral pressure-tight molded body layer and a body, the lower the compacting layer, a concave portion is formed on the upper surface, the second waterproof structure comprises a covering portion covering the periphery of the lower compacting layer, the retaining wall of the cover portion is formed, has a bent portion that is bent upward along the retaining wall, and a fixing portion formed on the inner peripheral side of the cover portion, the end of the bent portion Is welded to the first waterproof structure, the end portion of the fixing portion is disposed in the recess of the lower compacting layer, is fixed by a cement kneaded product was put into the recess, the upper side pressure tight molded body layer It is characterized that you have been formed so as to fill the second waterproof structure.

  As described above, the second waterproof structure of the waterproof structure for inorganic waste according to the present invention has a bent portion formed on the outer peripheral side of the covering portion and bent upward along the retaining wall. The end of the bent portion is welded to the first waterproof structure disposed between the inner peripheral surface of the retaining wall and the compacted molded body layer and covering the side surface of the compacted molded body layer.

The second waterproof structure fixing portion formed on the inner peripheral side of the covering portion is disposed in a recess formed in the upper surface of the lower compacting layer, the end portion of the fixed portion, cement It is embedded and fixed in the kneaded material. Further, an upper compacted body layer is formed so as to embed the second waterproof structure.

  As a result, the side surface of the compacted molded body layer is in a state of being sealed by the first waterproof structure and the second waterproof structure, so that rainwater is present between the compacted molded body layer and the two waterproof structures. There is no infiltration.

  Therefore, according to the waterproof structure for inorganic waste of the present invention, it is possible to prevent rainwater from contacting the side surface of the compacted molded body layer. As a result, it is possible to prevent the harmful substances in the inorganic waste contained in the compacted molded body layer from being eluted into the rainwater.

In the inorganic waste waterproof structure of the present invention, the lower the compacting layer and the upper lateral pressure-tight article-layer is preferably formed by laminating two layers.

Thus, the lower the compacting layer and the upper lateral pressure-tight article-layer of inorganic waste waterproof structure of the present invention is formed by laminating two layers, i.e., laminating the compacting layer 2 layers Even if the waterproof structure for inorganic waste is formed every time, since the side surface of the compacted molded body layer is sufficiently sealed, it is possible to prevent rainwater from contacting the side surface of the compacted molded body layer. .

In order to achieve the above object, the method for forming a waterproof structure for inorganic waste according to the present invention comprises laminating a compacted molded body layer obtained by burying a banking material containing inorganic waste in a section formed by a retaining wall. A method for forming a waterproof structure for inorganic waste that prevents contact between the formed compact and the rainwater, the first step of forming the first waterproof structure on the inner peripheral surface of the retaining wall; by compacting by introducing the fill material into the compartment, a second step of forming a lower compacting layer having a recess on the top surface, the second waterproof structure on the periphery of the lower compacting layer A third step of laying the second waterproof structure, the outer peripheral side of the second waterproof structure is bent upward along the retaining wall, the outer peripheral end is welded to the first waterproof structure, and the second waterproof structure after the inner end of the body and disposed in a recess of the lower compacting layer, projecting the cement kneaded product into the recess Characterized in that it comprises and a fourth step of fixing, and a fifth step of forming on the lateral pressure-tight molded layer so as to fill the second waterproof structure.

  Thus, the 2nd waterproof structure obtained by passing through the 3rd process and the 4th process of the formation method of the waterproof structure for inorganic wastes of the present invention is laid on the peripheral part of a compacting object layer. The

  And the outer peripheral side of the second waterproof structure is bent upward along the retaining wall to form a bent portion, and the end of the bent portion is the inner peripheral surface of the retaining wall and the compacted molded body layer. Are welded to the first waterproof structure covering the side surface of the compacted molded body layer.

Further, the inner peripheral side of the second waterproof structure is disposed as a fixing portion in a recess formed on the upper surface of the compacted molded body layer, and the end of the fixing portion is embedded and fixed in the cement kneaded material. . Furthermore, by passing through the fifth step, the upper consolidation body layer is formed so as to embed the second waterproof structure.

  As a result, the side surface of the compacted molded body layer formed in the second step of the method for forming a waterproof structure for inorganic waste according to the present invention was sealed by the first waterproof structure and the second waterproof structure. Since it will be in a state, rainwater does not permeate between the compacted body layer and the two waterproof structures.

  Therefore, according to the waterproof structure formed by the method for forming a waterproof structure for inorganic waste of the present invention, it is possible to prevent rainwater from contacting the side surface of the compacted molded body layer. As a result, it is possible to prevent the harmful substances in the inorganic waste contained in the compacted molded body layer from being eluted into the rainwater.

In the method of forming an inorganic waste waterproof structure of the present invention, the lower the compacting layer and the upper lateral pressure-tight article-layer is preferably formed by laminating two layers.

Thus, stacking a layer on the side pressure-tight article-layer is two formed by the lower compacting layer and the fifth step are formed in the second step of the method of forming an inorganic waste waterproof structure of the present invention Configured. That is, even if the waterproof structure for inorganic waste is formed every time two layers of the compacted molded body are laminated, the side surface of the compacted molded body layer is sufficiently sealed, Can prevent rainwater from entering between retaining walls

Explanatory drawing which shows typically the structure of a 1st disposal division and the compacting body formed in the inside. The flowchart which shows the process of the formation method of the waterproof structure for inorganic wastes concerning embodiment of this invention. It is explanatory drawing of each process of the flowchart of FIG. 2, (a) is the formation process of the 1st waterproof structure, (b) is the formation process of the 1st compacting body layer and the 2nd compacting body layer, (C) is a laying step of the second waterproof structure, (d) is a fixing step of the second waterproof structure, and (e) is a step of forming the third compacted body layer.

  Hereinafter, with reference to FIGS. 1-3, embodiment of the waterproof structure for inorganic wastes of this invention and its formation method is described.

  First, with reference to FIG. 1, the division which performs a landfill disposal and the compacting body formed in the inside are demonstrated.

  The section for landfill disposal is constructed as a depression by digging down the inside of the retaining wall 1 while constructing the retaining wall 1 at the boundary with the surrounding ground in the planned site of the final disposal site. . That is, the range and depth of the section for landfill disposal are defined by the retaining wall 1.

  In addition, a protective layer (not shown) is formed by placing a water shielding sheet sandwiched between protective mats on the ground of the dug out of the recessed area, and placing asphalt pavement or protective sand on it. ) Is arranged.

  The compacted compact 2 in the section for landfill disposal formed as described above is formed, for example, by a banking material compacting method as disclosed in Patent Document 1 by the applicant of the present application.

  In the embankment material compaction method, first, a unit landfill space is formed by an iron plate or the like in a section where landfill disposal is performed. Thereafter, the unit landfill space is divided by a temporary dam for internal partition to form a first space and a second space located on the side of the first space.

  Next, the first space is filled with a B-type embankment material produced by adding cement and water to a B-type inorganic waste having a harmful substance concentration exceeding a predetermined value, and then compacted. The compacting part 201 is formed. Thereafter, on the first compacted portion 201, a type A embankment material produced by adding cement and water to a type A inorganic waste having a harmful substance concentration of a predetermined value or less and kneading is put into a compact. Thus, the second consolidation part 202 is formed.

  Here, the harmful substances include radioactive substances as well as harmful substances and heavy metals contained in incineration ash of general waste such as garbage and waste plastic.

  Next, the temporary consolidation dam is removed, and the third compacted portion 203 is formed by putting and compacting the type A embankment material in the second space. Then, the iron plate etc. for forming unit landfill space are removed.

  Thus, the 1st compaction part 201 containing B class inorganic waste is covered with the 2nd compaction part 202 and 3rd compaction part 203 containing A class inorganic waste, and unit compaction molding is carried out. A body 200 is formed.

  Then, the unit compacted body 200 is developed in the horizontal direction to form a compacted compact layer 20, and the compacted compact layer 20 is stacked (in FIG. 1, 16 layers are stacked). A compacted body 2 is formed. The compacted body 2 thus formed becomes a strong reclaimed ground.

  Next, with reference to FIG.2 and FIG.3, the formation method of the waterproof structure for inorganic wastes of this invention is demonstrated.

  First, as shown in FIG. 3A, a plurality of protective mats 12a and water-impervious sheets 12b are alternately provided on the inner peripheral surface of the retaining wall structure 11 that forms the retaining wall 1 that defines the section for landfill disposal. The first waterproof structure 12 is formed by laminating (FIG. 2 / STEP 1 (first step)).

  Thereafter, the urethane 3 is coated on the first waterproof structure 12, and a nonflammable spray body (not shown) is sprayed on the surface of the urethane 3 to form a cover structure.

Next, as shown in FIG. 3 (b), a first compacted body layer 21 is formed in the section for landfill disposal defined by the retaining wall 1, and the first compacted body layer 21 is formed. On the top, the second compacted body layer 22 having the recess 22a formed on the upper surface is formed to form the lower compacted body layer (FIG. 2 / STEP2 (second step)).

  The recess 22a may be formed in a groove shape on the second compacted body layer 22 or may be formed as a hole.

  Next, as shown in FIG.3 (c), the 2nd waterproof structure 4 comprised by laminating | stacking the protection mat 4a and the water-impervious sheet | seat 4b alternately on the 2nd compacting molded object layer 22 is comprised. (FIG. 2 / STEP3 (third step)).

  The second waterproof structure 4 includes a bent portion 41 that is bent upward along the first waterproof structure 12, and a retaining wall 1 and a recess 22 a on the upper surface of the second compacted body layer 22. A covering portion 42 that covers an area, that is, a peripheral edge portion, and a fixing portion 43 that is formed on the inner peripheral side of the covering portion 42 are provided. Further, the end of the fixing portion 43 is disposed in the recess 22a.

  Next, as shown in FIG. 3 (d), the bent portion 41 is bent upward along the retaining wall 1, and its end is welded to the first waterproof structure 12 to form the welded portion 5. . After that, the cement kneaded material 6 is put into the recess 22a of the second compacted molded body layer 22, the cement kneaded material 6 is solidified, and the end of the fixing portion 43 is fixed (FIG. 2 / STEP4 (first step)). 4 steps)).

  In addition, in the formation method of this embodiment, when performing this 4th process, the 2nd waterproofing structure 4 is coat | covered with urethane 7, the nonflammable spray body is sprayed on the urethane 7 surface, and it coat | covers A structure (not shown) is formed. Moreover, as the cement kneaded material 6, what kneaded and added sand and water etc. (for example, mortar) etc. are used.

Next, as shown in FIG. 3 (e), the third waterproof molded body layer 23 , that is, the upper consolidated molded body layer is formed so as to embed the second waterproof structure 4 (FIG. 2 / STEP5). ).

  In the waterproof structure of the present embodiment formed by such a forming method, the second waterproof structure 4 has a bent portion 41 bent upward along the retaining wall 1, and the bent structure 41 The end portion of the portion 41 is disposed between the inner peripheral surface of the retaining wall 1 and the first compacted molded body layer 21 and the second compacted molded product layer 22, and the first compacted molded product layer 21 and It is welded to the first waterproof structure 12 covering the side surface of the second compacted molded body layer 22.

  Further, in the second waterproof structure 4, the fixing portion 43 formed on the side opposite to the bent portion 41 side of the covering portion 42 is formed in the concave portion 22 a formed on the upper surface of the second compacted body layer 22. The end of the fixing portion 43 is embedded in the cement kneaded material 6 and fixed.

  As a result, the side surfaces of the first compacted molded body layer 21 and the second compacted molded product layer 22 are sealed by the first waterproof structure 12 and the second waterproof structure 4, so that the first Rainwater does not enter between the first compacted body layer 21 and the second compacted body layer 22 and the first waterproof structure 12 and the second waterproof structure 4.

  Therefore, according to the waterproof structure for inorganic waste of the present embodiment, it is possible to prevent rainwater from contacting the side surfaces of the first compacted molded body layer 21 and the second compacted molded body layer 22. As a result, it is possible to prevent harmful substances in the inorganic waste contained in the first compacted molded body layer 21 and the second compacted molded body layer 22 from being eluted into the rainwater.

  In the method for forming a waterproof structure according to the present embodiment, after forming the second compacted body layer 22 on the first compacted body layer 21, that is, after laminating two compacted body layers, A waterproof structure for inorganic waste is formed.

  This is because, according to the method for forming a waterproof structure of the present embodiment, even if a plurality of compacted molded body layers are laminated, the first compacted molded body layer 21 and the second consolidated molded body layer 22 The side surfaces are sufficiently sealed by the first waterproof structure 12 and the second waterproof structure 4, so that the side surfaces of the first consolidated body layer 21 and the second consolidated body layer 22 are This is because contact with rainwater can be prevented.

  In addition, a covering structure (not shown) prevents damage to the first waterproof structure 12 and the second waterproof structure 4, and hardens the surface side thereof. As a result, when the first waterproof structure 12 and the second waterproof structure 4 are damaged, the damaged part is partially torn, that is, the damaged part can be visually identified. , Quick repairs, etc. are possible.

  Although the illustrated embodiment has been described above, the present invention is not limited to such a form.

  In the said embodiment, after forming the 2nd compacting body layer 22 on the 1st compacting body layer 21, the waterproof structure for inorganic wastes of this invention is formed.

  However, the waterproof structure for inorganic waste according to the present invention is not limited to such a configuration, but considering the height of the retaining wall, the size of the second waterproof structure, etc. You may form for every, and you may form in the compacting body layer laminated | stacked three or more layers.

DESCRIPTION OF SYMBOLS 1 ... Retaining wall, 11 ... Retaining wall structure, 12 ... 1st waterproof structure, 12a ... Protective mat, 12b ... Water shielding sheet, 2 ... Consolidation molded body, 20 ... Consolidation molded body layer, 21 ... 1st Consolidation molded body layer, 22 ... second consolidated molded body layer, 22a ... concave portion, 23 ... third consolidated molded body layer, 200 ... unit consolidated molded body, 201 ... first consolidated molded section, 202 ... second Consolidation molding part 203 ... 3rd compaction molding part 3 ... Urethane 4 ... 2nd waterproof structure 4a ... Protective mat 4b ... Water-proof sheet, 41 ... Bending part, 42 ... Cover part, 43 ... Fixing part, 5 ... welding part, 6 ... cement kneaded material, 7 ... urethane.

Claims (4)

It is a waterproof structure for inorganic waste that prevents contact between the compacted compact formed by laminating a compacted compact layer obtained by embedding an embankment material containing inorganic waste in the section formed by the retaining wall. There,
And bottom piezoelectric dense molded body layer, and a lateral pressure-tight molded layer on which is formed on the bottom side pressure tight molded layer, the inner peripheral surface and the lower the compacting layer and the upper lateral pressure dense molded body layer of the retaining wall comprises a first waterproof structure, and a second waterproof structure laid in the lower compacting element layer disposed between,
The lower the compacting layer, a concave portion on the upper surface is formed,
Said second waterproof structure comprises a covering portion covering the periphery of the lower compacting layer, wherein formed on the retaining wall of the cover portion, bent folded upwardly along the retaining wall a parts and and a fixing portion formed on the inner peripheral side of the cover portion,
An end of the bent portion is welded to the first waterproof structure,
End of the fixing portion is disposed in the recess of the lower compacting layer, is fixed by a cement kneaded product was put into the recess,
Wherein the lateral pressure-tight article-layer is an inorganic waste waterproof structure characterized that you have been formed so as to fill the second waterproof structure. The waterproof structure for inorganic waste according to claim 1,
The lower the compacting layer or the upper side pressure tight molded layer are inorganic waste waterproof structure characterized in that it is formed by laminating two layers. A waterproof structure for inorganic waste that prevents contact between a compacted compact formed by laminating a compacted compact layer obtained by embedding a banking material containing inorganic waste in a section formed by a retaining wall and rainwater A forming method comprising:
A first step of forming a first waterproof structure on the inner peripheral surface of the retaining wall;
By compacting by introducing the fill material into the compartment, a second step of forming a lower compacting layer having a recess on the upper surface,
A third step of laying the second waterproof structure on the periphery of the lower compacting layer,
The outer peripheral side of the second waterproof structure is bent upward along the retaining wall, the end of the outer peripheral side is welded to the first waterproof structure, and the inside of the second waterproof structure after the end of the circumferential side are arranged in the recess of the lower compacting element layer, and a fourth step of fixing by introducing a cement kneaded product in the recess,
A method for forming a waterproof structure for inorganic waste, comprising: a fifth step of forming an upper compacted body layer so as to embed the second waterproof structure . A method for forming a waterproof structure for inorganic waste according to claim 3,
Said lower compacting layer or the upper side pressure tight molded layer, the method of forming the inorganic waste waterproof structure characterized in that it is formed by laminating two layers.