JP2014176804A - Vertical wall structure of final disposal site - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical wall structure of a final disposal site that can securely prevent infiltration of rain water and the like from a lateral side and water leakage from inside the disposal site.SOLUTION: The vertical wall structure of a final disposal site comprises an inside surface waterproof structure 1120 that is a plural-layered stack of water shield sheets 110X and protection mats 110Y that coat their surfaces to protect them and a coated structure 120 constituted of urethane 121 that coats the waterproof structure surface and an incombustible spray material 122 sprayed over the urethane. Further, this vertical wall structure comprises a waterproof unit 220, constituted of a water shield sheet 220X and a protection mats 220Y that cover its top and bottom, and a second waterproof structure 22, constituted with a crushed stone 220a laid on it, and the second waterproof structure has a first flange part 221 rising up vertically on the outer peripheral edge and a second flange part 222 extending in a horizontal direction from the first flange part 221 to a vertical wall 10, where the second flange part 222 is level with a ground surface GL under a bottom slab of concrete 20 that integrates with the vertical wall 10 to close the bottom of the disposal site.

Description

  The present invention relates to a vertical wall structure of a final disposal site where a banking material containing inorganic waste is buried as a compacted body.

  Conventionally, as a vertical wall structure of this kind of final disposal site, there is the following Patent Document 1 by the present applicant. In such a vertical wall of the final disposal site, a protective sheet and a water shielding sheet are sequentially stacked on the inner surface of the vertical wall that forms the outer periphery of the final disposal site, and a spray urethane layer is provided on the surface of the water shielding sheet. The structure is formed (see Patent Document 1, paragraph [0026]). As a result, intrusion of rainwater and the like from the side can be prevented, and leakage of water retained in the final disposal site can also be prevented.

Japanese Patent No. 4397050

  Here, the Applicant has achieved a higher level of safety performance at the final disposal site to prevent the intrusion of rainwater, etc. from the side and to prevent leakage from the final disposal site in further earnest testing research. Considered to do.

  In view of such a background, an object of the present invention is to provide a vertical wall structure of a final disposal site that can reliably prevent intrusion of rainwater and the like from the side and leakage from the final disposal site.

The vertical wall structure of the final disposal site of the first invention is a vertical wall structure of the final disposal site that fills the embankment material containing inorganic waste as a compacted body,
A concrete vertical wall erected on the outer periphery of the final disposal site;
An inner side waterproof structure in which a plurality of protective mats for covering and protecting the surface of the water shielding sheet and the surface of the water shielding sheet are laminated on the inner surface of the vertical wall;
A covering structure composed of urethane coated on the surface of the waterproof inner surface structure and a non-combustible spraying material sprayed on the surface of the urethane;
Bottom slab concrete that closes the bottom of the final disposal site as one piece with the vertical wall;
Under the bottom slab concrete, a waterproof unit comprising a waterproof sheet and a protective mat covering the top and bottom of the waterproof sheet, and a crushed stone laid on at least the upper side of the waterproof unit, A bottom waterproof structure covering the lower surface and the entire lower end of the vertical wall,
The bottom waterproof structure has a first flange that rises perpendicularly to the outer periphery of the bottom waterproof structure, and a second flange that extends in a horizontal direction from the first flange to the vertical wall, and the second flange is It is equal to the ground surface.

  According to the vertical wall structure of the final disposal site of the first invention, since the inner side waterproof structure and the covering structure are provided on the inner surface of the vertical wall, water leakage from the final disposal site can be prevented.

  At this time, since the inner side waterproof structure is covered with the covering structure, when the compacted body is buried, the covering structure serves as a buffer to prevent the inner side waterproof structure itself from being damaged. Can do.

  Furthermore, since the surface of the inner side waterproof structure is cured by covering the surface of the inner side waterproof structure with the covering structure, the protective mat and the water shielding sheet of the inner side structure are damaged. In such a case, since the part is partially torn, the damaged part can be visually identified, and a quick repair treatment or the like is possible. Therefore, it is possible to reliably prevent water leakage from the side.

  Next, as for the outer surface of the vertical wall, the part exposed to the ground can be identified by visually recognizing the outer surface of the vertical surface. It becomes possible. Therefore, it is possible to reliably prevent the intrusion of rainwater or the like from the side.

  Here, the portion of the outer surface of the vertical wall that is not exposed to the ground becomes a problem. By providing the first and second flange portions on the bottom waterproof structure so as to cover this portion, It is possible to reliably prevent the intrusion of rainwater from the water.

  Thus, according to the vertical wall structure of the final disposal site of the first invention, at the final disposal site, while preventing intrusion of rainwater and the like from the side, at a higher level that prevents leakage from the final disposal site. Safety performance can be realized.

The vertical wall structure of the final disposal site of the second invention is the first invention,
The vertical wall is erected and disposed so that a lowermost surface for filling the compacted body is equal to or higher than the ground surface.

  According to the vertical wall structure of the final disposal site of the second invention, there is a problem with the vertical wall by arranging the vertical wall so that the lowermost surface where the densely formed body is buried is above the ground surface. However, the site | part can be visually recognized from the outer surface of a vertical wall. Thereby, a quick repair treatment etc. are attained, and the water leakage from a side can be prevented reliably.

Thus, according to the vertical wall structure of the final disposal site of the second invention, the safety performance at a higher level that reliably prevents leakage from the final disposal site while preventing intrusion of rainwater and the like from the side. The vertical wall structure of the final disposal site of the third invention can be realized in the first or second invention,
The roof part is formed so that the whole upper end part side of the said vertical wall may be covered.

  According to the vertical wall structure of the final disposal site according to the third aspect of the invention, the final disposal site is a so-called closed-type final disposal site with a roof, so that rainwater does not enter from directly above the final disposal site. . This eliminates the need for water treatment in the final disposal site and greatly reduces the risk of water leakage from the final disposal site.

  Thus, according to the vertical wall structure of the final disposal site of the third aspect of the invention, it is possible to realize a higher level of safety performance that reliably prevents water leakage from the final disposal site.

Sectional drawing which shows the outline | summary of the bottom plate structure and vertical wall structure in a final disposal site. Explanatory drawing which shows the detail of the bottom plate structure and vertical wall structure of FIG. Explanatory drawing which shows arrangement | positioning of the water collection pipe | tube and test | inspection pipe | tube of FIG.

  As an embodiment of the present invention, a bottom plate structure and a vertical wall structure in a final disposal site will be described.

  As shown in FIGS. 1 and 2, the final disposal site of the present embodiment includes a concrete vertical wall 10 erected on the outer periphery of the final disposal site, and the final disposal site in a horizontal direction continuously to the vertical wall 10. The bottom slab concrete 20 which closes the bottom part of a field, the roof part 30 provided so that the whole upper end part side of the vertical wall 10 may be covered, and the approach path 40 are provided.

  First, the vertical wall 10 includes an inner side waterproof structure 110 and a covering structure 120 on its inner side.

  The inner side waterproof structure 110 has a structure in which a plurality of protective mats 110Y that cover and protect the waterproof sheet 110X and the surface of the waterproof sheet 110X are stacked. Specifically, the thickness of the water shielding sheet 110X is, for example, 1.5 mm, and the thickness of the protective mat 110Y is, for example, 200 mm.

  The covering structure 120 is composed of urethane 121 covered with the water shielding sheet 110 </ b> X exposed on the surface of the inner waterproof structure 110, and a nonflammable spray material 122 sprayed on the surface of the urethane 121.

  Specifically, the urethane 121 is hard foamed urethane, and is coated on the surface of the water shielding sheet 110X as a layer of, for example, 300 mm by spraying. Moreover, the nonflammable spray material 122 protects the surface of the urethane 121, and the thickness thereof is, for example, 4 mm.

  On the other hand, the vertical wall 10 is erected and arranged so that the outer surface thereof is almost exposed to the ground. That is, they are arranged upright so that the lowermost surface for filling the compacted body becomes equal to the ground surface. The details of the relationship between the lowermost surface for filling the compacted body and the ground surface will be described later.

  Next, the bottom slab concrete 20 includes a first waterproof structure 21 on the upper side and a second waterproof structure 22 on the lower side.

  The first waterproof structure 21 has a configuration (three-layer structure) in which waterproof units 211, 212, and 213 and single-grained crushed stones 210a, 210b, and 210c laid thereon are stacked on each other.

  The uppermost waterproof unit 211 has a structure in which a plurality of (two in this embodiment) protective mats 211Y for covering and protecting the waterproof sheet 211X and the upper and lower sides thereof are laminated. A crushed stone 210a is laid on the upper side of the uppermost waterproof unit 211, and a crushed stone 210b is laid on the lower side. In addition, the upper surface of the crushed stone 210a is the lowermost surface that fills the compacted body.

  The waterproof unit 212 of the intermediate layer includes a water shielding sheet 212X and protective mats 212Y and 212Y that cover and protect the waterproof sheet 212X. A crushed stone 210b is laid on the upper side of the waterproof unit 212 of the intermediate layer, and a crushed stone 210c is laid on the lower side.

  The waterproof unit 213 in the lower layer has the same configuration as the waterproof unit 212 in the intermediate layer, and a crushed stone 210c is laid on the upper side, and the lower side is in contact with the bottom slab concrete 20.

  Here, by disposing the crushed stones 210a, 210b, and 210c on the waterproof units 211, 212, and 213, respectively, the load of the compacted compact is prevented from being applied to the waterproof units 211, 212, and 213 directly below. Can be made. Therefore, the load on the waterproof units 211, 212, and 213 can be reduced, and the waterproof unit is not damaged. Furthermore, the load on the bottom slab concrete 20 that comes into contact with the lower waterproof unit 213 can also be reduced.

  Note that the inner side waterproof structure 110 provided on the inner side of the vertical wall 10 and the uppermost waterproof unit 211, the intermediate waterproof unit 212, and the lower waterproof unit 213 maintain the waterproof performance. It is connected to the. Supplementally, all of these water shielding sheets and protective mats have the same specifications.

  Next, the second waterproof structure 22 (corresponding to the bottom waterproof structure of the present invention) includes a waterproof unit 220, a crushed stone 220a laid on the waterproof unit 220, and a crushed stone 220b laid below the waterproof unit 220. These are provided so as to cover the lower surface of the bottom slab concrete 20 and the entire lower end of the vertical wall 10.

  The waterproof unit 220 includes a waterproof sheet 220X and protective mats 220Y and 220Y that cover and protect the waterproof unit 220X and the upper and lower waterproof units 212 and 213 of the intermediate waterproof layer 21 and the lower waterproof unit 212, respectively. The water shielding sheet 220X, the protective mat 220Y, and the crushed stones 220a and 220b have the same specifications as those used for the first waterproof structure 21 described above.

  The waterproof unit 220 further includes a first flange 221 that rises perpendicularly to the outer periphery of the waterproof unit 220 and a second flange 222 that extends from the first flange 221 to the vertical wall 10 in the horizontal direction.

  For example, the first flange 221 rises vertically from the end of the waterproof unit 220 that extends, for example, to the outer peripheral side of 2 m from the vertical wall 10 to the ground. A concrete L-shaped retaining wall 23 is disposed on the outer peripheral side and the lower end of the first flange 221.

  The second eaves part 222 extends from the first eaves part 221 to the vertical wall 10 along the ground surface, and has an end wound around the vertical wall 10 so as to prevent intrusion of rainwater or the like between the first eaves part 221 and the vertical wall 10. Raised and glued.

  Therefore, the space surrounded by the waterproof unit 220, the first brim part 221, the second brim part 222, the vertical wall 10 and the bottom slab concrete 20 is free of rainwater and the like, and the retained water from the final disposal site, etc. Leaching is prevented by the first waterproof structure 21 and the bottom slab concrete 20, so that a sealed space without liquid is present. In addition, in this space, the crushed stone 220a on the waterproof unit 220 is filled so as to block the entire space.

  Here, in order to ensure that there is no liquid in the space, the crushed stone 220a on the waterproof unit 220 is provided with perforated water collecting pipes 25 at predetermined intervals. When a liquid is present in the lower layer, the water collecting pipe 25 collects the liquid.

  As shown in FIG. 3, the water collecting pipe 25 is arranged in a mesh shape with a downward slope from the center of the final disposal site toward the outer peripheral direction, and is connected to the water collecting pipe 26 at the outer peripheral position. The water collecting pipe 26 at the outer peripheral position is provided with a test pipe 27 that communicates with the water collecting pipe 26 at a predetermined interval and extends in the vertical direction so as to penetrate the second flange 222.

  Therefore, if there is leakage or rainwater intrusion into the water collection pipes 25 and 26, it can be detected by the inspection pipe 27 outside the final disposal site. At this time, by associating the detected part and the non-detected part of the water leak with the paths of the water collecting pipes 25 and 25, it is possible to identify the part where the malfunction occurs, and to perform a quick repairing process and the like. Become.

  The detection of water leakage is impossible due to the first waterproof structure 21 and the bottom slab concrete 20 in the structure of the final disposal site of the present embodiment. In addition, infiltration of rainwater cannot be performed by the first brim part 221 and the second brim part 222 because of the structure of the final disposal site of the present embodiment. However, even if water leakage or the like is detected, water leakage is prevented by the second waterproof structure 22, and the water can be treated by pumping up from the test tube 27.

  Next, the roof portion 30 includes a plurality of support columns 31 erected on the upper end surface of the vertical wall 10 and a roof 32 supported by the support columns 31 and covering the entire area immediately above the final disposal site.

  In this way, by making the final disposal site a so-called closed type final disposal site, the infiltration of rainwater from directly above the final disposal site is eliminated, the treatment of the retained water in the final disposal site becomes unnecessary, and the water collecting pipe 25 Can be used for monitoring the intrusion of rainwater from the final disposal site.

  Next, the approach path 40 is an approach path for carrying inorganic waste into the field from outside the final disposal site by a trailer or a dump truck, and has a predetermined inclination angle (exceeding the vertical wall 10 outside and inside the field). (For example, 10%) is provided along the vertical wall 10 (the delivery path outside the field is not shown).

  The approach path 40 includes a support wall 10a and a road surface wall 10b, and is made of concrete similar to the vertical wall 10 and the bottom slab concrete 20, and is integrally formed therewith. In addition, the surface of the road surface wall 10b is covered with a waterproof unit similar to the waterproof unit 211 of the uppermost layer of the first waterproof structure 21, and concrete pavement is further sandwiched on the road surface. Moreover, the fence 41 is provided in the edge of the road surface wall 10b.

  The above is the detail of the structure of the vertical wall 10 of the final disposal site of this embodiment. According to the vertical wall 10 of the final disposal site of this embodiment, since the inner side waterproof structure 110 and the covering structure 120 are provided on the inner side, water leakage from the final disposal site can be prevented. In particular, since the inner side waterproof structure 110 is covered with the covering structure 120, the covering structure 120 serves as a buffer and damages the inner side waterproof structure itself 110 when the compacted body is buried. Can be prevented.

  Furthermore, since the surface side of the inner side waterproof structure 110 is cured by covering the surface of the inner side waterproof structure 110 with the covering structure 120, the protective mat 110Y of the inner side waterproof structure 110 and the like When the water-impervious sheet 110X is damaged, the part is partially torn, so that the damaged part can be visually identified, and a quick repair treatment or the like is possible. Therefore, it is possible to reliably prevent water leakage from the side.

  In addition, the outer surface of the vertical wall 10 can identify the part where the defect has occurred by visually recognizing the outer surface of the vertical surface of the portion exposed to the ground, and can perform a quick repair procedure, etc. Is also possible. Therefore, it is possible to reliably prevent the intrusion of rainwater or the like from the side.

  Furthermore, a portion of the outer surface of the vertical wall 10 that is not exposed to the ground becomes a problem. The first waterproof portion 22 and the second flange portion 222 are provided on the second waterproof structure 22 so as to cover this portion. Therefore, it is possible to reliably prevent rainwater and the like from entering from the side.

  Thus, according to the vertical wall structure of the present embodiment, it is possible to reliably prevent the intrusion of rainwater or the like from the side and the leakage from the final disposal site.

  In addition, in the vertical wall structure of the final disposal site of the present embodiment, the case where the lowermost surface (the crushed stone 210a on the uppermost surface of the first waterproof structure 21) for reclaiming the compacted body has been described is equal to the ground surface GL, It is not limited, and the lowermost surface that fills the compacted body only needs to be equal to or higher than the ground surface GL. In this case, the vertical wall 10 is placed upright so that the lowermost surface of the compact molded body is filled with the ground surface GL or more, so that the inner waterproof structure 110 may be damaged when the compact molded body is buried. Even if there is, the damaged part can be visually recognized from the outer surface of the vertical wall 10. Thereby, a quick repair treatment etc. are attained, and the water leakage from a side can be prevented reliably.

  Further, in the present embodiment, in particular, since the roof portion 30 is provided, rainwater does not enter from directly above the final disposal site, the treatment of the retained water in the final disposal site becomes unnecessary, and the water collecting pipe 25 is disposed outside the final disposal site. A higher level of safety performance can be realized that can be used for monitoring the intrusion of rainwater and the like.

  Here, when the roof portion 30 is not provided, that is, when it is a so-called open type final disposal site, a rainwater collecting pipe (not shown) is provided on the crushed stone 210a of the uppermost layer of the first waterproof structure 21, The water stored in the final disposal site can be treated through the rainwater collecting pipe.

  In this case, the retained water in the final disposal site is not leaked by the first waterproof structure 21 and the bottom slab concrete 20, so the water collection pipe 25 can be used mainly for monitoring the intrusion of rainwater or the like from outside the final disposal site, Secondary, it can be used as detection of water leakage.

DESCRIPTION OF SYMBOLS 10 ... Vertical wall, 20 ... Bottom slab concrete, 21 ... 1st waterproof structure, 22 ... 2nd waterproof structure (bottom part waterproof structure), 25, 26 ... Water collecting pipe, 27 ... Inspection pipe, 30 ... Roof part, 40 ... Access path, 110 ... Waterproof structure on the inner surface, 120 ... Coating structure 120, 211, 212, 213, 220 ... Waterproof unit, 210a, 210b, 210c, 220a, 220b ... Crumble, 221 ... First flange part, 222 ... 2nd buttocks, GL ... Ground surface.

Claims (3)

It is a vertical wall structure of the final disposal site that fills the embankment material containing inorganic waste as a compacted body,
A concrete vertical wall erected on the outer periphery of the final disposal site;
An inner side waterproof structure in which a plurality of protective mats for covering and protecting the surface of the water shielding sheet and the surface of the water shielding sheet are laminated on the inner surface of the vertical wall;
A covering structure composed of urethane coated on the surface of the waterproof inner surface structure and a non-combustible spraying material sprayed on the surface of the urethane;
Bottom slab concrete that closes the bottom of the final disposal site as one piece with the vertical wall;
A bottom surface of the bottom slab concrete, comprising a waterproof unit composed of a water shielding sheet and a protective mat covering the top and bottom of the water shielding sheet, and a crushed stone laid on the waterproof unit. And a bottom waterproof structure covering the entire lower end of the vertical wall,
The bottom waterproof structure has a first flange that rises perpendicularly to the outer periphery of the bottom waterproof structure, and a second flange that extends in a horizontal direction from the first flange to the vertical wall, and the second flange is Vertical wall structure of final disposal site characterized by being equal to the ground surface. In the vertical wall structure of the final disposal site according to claim 1,
The vertical wall structure of a final disposal site, wherein the vertical wall is erected and disposed such that a lowermost surface for filling the compacted body is equal to or higher than the ground surface. In the vertical wall structure of the final disposal site according to claim 1 or 2,
A vertical wall structure of a final disposal site, wherein a roof portion is formed so as to cover the entire upper end side of the vertical wall.