JP6504648B2 - Water blocking structure - Google Patents

Description

  The present invention relates to a water shielding structure employed in a waste landfill for constructing a waste disposal site for final disposal of industrial waste, general waste and the like, and in particular, an upright levee which is a waste landfill for reclamation. The present invention relates to a water blocking structure at the mating surface of the side face of an upright revetment and the end face of the inclined revetment, such as a place where a revetment and an inclined revetment are orthogonal to each other.

  In recent years, the amount of industrial waste emissions tends to increase, and in connection with this, construction of final disposal sites is being promoted at a large number regardless of sea surface or land. In this type of controlled final disposal site, as a matter of course, it has become an important issue how to control the leakage of harmful substances contained in waste out of the disposal area.

  For example, some sea surface disposal sites are constructed so as to surround four sides of the landfill disposal area by upright revetments and sloped revetments. The upright levee revetment 2 itself has a water blocking property, and as shown in FIG. 1, it is composed of a concrete caisson having a rectangular cross section, and as shown in FIG. There is something. There are also steel pipe sheet piles, steel sheet piles and the like. On the other hand, the sloped revetment 3 was constructed by injecting a large number of stone materials 10 and 11 on the side of the landfill disposal area of the caisson 6 with a rectangular caustic section installed on the rubble mound 5 built on the seabed ground. It comprises a back-in layer 7 and a water-impervious sheet 8 laid in the back-in layer 7. The sloped revetment 3 has an impermeability by the impermeable sheet 8. The landfill area side of the back-in layer 7 is formed on the slope. That is, the slope surface of the backfill layer 7 on the side of the landfill site is formed by elevating a large number of stone materials 10 and 11 such as crushed stone in a slope shape at a predetermined inclination angle.

And, on the mating surface of the side face 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3, a water blocking structure 50 is employed so as to prevent water leakage from the mating surface to the outer water area.
The conventional water blocking structure 50 is configured as shown in FIG. That is, as shown in FIG. 17, an anchor sheet 51 made of polyethylene is embedded in the side surface 2 a of the upright revetment 2 and the end face 3 a of the inclined revetment 3. The anchor sheet 51 is partially embedded along the slope of the sloped revetment 3. A polyethylene water blocking sheet 52 is attached to cover the anchor sheet 51. Specifically, the water blocking sheet 52 and the anchor sheet 51 are joined by extrusion welding at a predetermined portion. This joining operation is carried out on land.

  Then, first, the side surface 2 a of the upright revetment 2 and the end face 3 a of the inclined revetment 3 are brought into contact with each other. At this time, in the sloped revetment 3, the water blocking sheet 8 in the back-in layer 7 is exposed to the outside. Subsequently, the upper portion of the water-impervious sheet 52 connected to the anchor sheet 51 provided on the side surface 2a of the upright revetment 2 is bent along the slope of the inclined revetment 3 and the water is blocked on the upright revetment 2 side. The water blocking sheet 8 on the side of the sloped revetment 3 is stacked on the sheet 52.

  Subsequently, the formwork concrete block 12 is disposed along the slope at a position where a predetermined distance from the end face 3a of the sloped revetment 3 is provided. Subsequently, between the side 2 a of the upright revetment 2 and the formwork concrete block 12 of the inclined revetment 3, on the upper surface of the impermeable sheet 52 on the upright revetment 2 side and the impermeable sheet 8 on the inclined revetment 3 side. After the water blocking area stone material 18 having a substantially elliptical cross section is stacked in multiple stages, the asphalt mastic 14 is filled to form the water blocking area 15. In order to press in the asphalt mastic 14 of the water blocking area 15, a covering asphalt mat 27 is disposed on the upper surface thereof. Thereafter, as the sloped revetment 3, finally, a large number of stone materials 10 are piled up on the slope shape at a predetermined inclination angle above the covering asphalt mat 27, the formwork concrete block 12 and the water blocking sheet 8 to form a backing layer. Form 7

  Thereby, the joint surface of the anchor sheet 51 and the water blocking sheet 52 embedded in the side surface 2 a of the upright levee revetment 2 by extrusion welding is a joint portion between the side surface 2 a of the upright levee revetment 2 and the end face 3 a of the inclined levee revetment 3. 53, the water blocking sheet 52 on the side of the upright revetment 2 extending from the joint 53, the water blocking sheet 8 on the side of the inclined revetment 3 and the water blocking area 15 by the asphalt mastic 14 are configured as liquid tight continuous bodies; The mating surface of the side face 2a of the revetment 2 and the end face 3a of the sloped revetment 3 is sealed by the liquid tight continuum, and the water impermeability is improved. In addition, in fact, the water blocking area 15 by the asphalt mastic 14 comes to be water-insulated at the close contact portion in close contact with the side surface 2 a of the upright revetment 2.

  However, in the conventional water-impervious structure 50 described above, as shown in FIG. 18, when the side surface 2 a of the upright revetment 2 and the end face 3 a of the inclined revetment 3 are separated in the event of an earthquake or the like, asphalt mastic 14 Before the gap 35 (see also FIG. 4) is filled by the self-deformation of the large number of upper stone materials 10 of the sloped revetment 3 flow into the gap 35, and the water tightness of the mating surface by the liquid tight continuum can not be secured. There is a risk.

  Further, in the above-described conventional water-impervious structure 50, the asphalt mastic 14 is filled on the water-impervious sheets 8, 52 between the side surface 2a of the upright revetment 2 and the formwork concrete block 12 of the inclined revetment 3 Although the water blocking area 15 is formed, the water blocking area 15 has a large number of steps of stone materials 18 for water blocking area having a substantially elliptical cross section in which the aspect ratio and the like are considered in order to uniformly fill the asphalt mastic 14. After the lamination, the asphalt mastic 14 is filled between the water blocking area stones 18 and 18. However, in this conventional water blocking structure 50, a part of each of the water blocking area stones 18 located at the lowermost position in the cross section of the water blocking area 15 is the water blocking sheet 8, 52 before the asphalt mastic 14 is cast. Since the asphalt mastic 14 can not cover the entire surface of the water-impervious sheets 8 and 52 after the asphalt mastic 14 has been cast, there is a concern that the water impermeability may be reduced. Therefore, it is an issue to spend a lot of time in the work because the layering of the stone material 18 for water blocking area and the filling of the asphalt mastic 14 are alternately performed for each layer.

  Furthermore, in the conventional water-impervious structure 50, the anchor sheet 51 and the water-impervious sheet 52 embedded in the side surface 2a of the upright revetment 2 (caisson) are bonded on the land by extrusion welding 53 Although the work is necessary, this work suspends the water-impervious sheet 52 from the upper end of the caisson, aligns the water-impervious sheet 52 and the anchor sheet 51, and heights the portion to be extruded 53 by welding. It becomes work, and it is very laborious, such as position adjustment of both in the high place, and workability is very bad. Moreover, when the upright levee revetment 2 is formed of steel sheet piles or steel pipe sheet piles, the polyethylene water-impervious sheet 52 can not be welded in advance to the side surface of the steel sheet piles or steel pipe sheet piles 50 can not be adopted.

  Therefore, Patent Document 1 discloses a water blocking structure in a waste disposal site having a pit on which waste is deposited, and a joint portion formed on a bottom plate and / or a side wall of the pit as a prior art of the water blocking structure. A water-impervious sheet is laid on the surface of the pits, a reinforcing sheet is fixed on the surface of the water-impregnated sheet, and the reinforcing sheet straddles the joint in a state where it can be deployed, and the reinforcing sheet It is disclosed to provide a deployed state retention structure that retains in a deployable state.

JP, 2013-252497, A

  However, the water shielding structure of the waste disposal site according to the invention of Patent Document 1 has a configuration in which the reinforcing sheet is disposed so as to straddle the joint portion together with the water shielding sheet in a state where expansion is possible. In the structure, it can not be adopted as the mating surface of the side of the upright revetment and the end face of the inclined revetment, rather than solving the above-mentioned problems.

  The present invention has been made in view of such a point, and it is possible to ensure water blocking on the mating surface between the side face of the upright revetment and the end face of the inclined revetment, and to provide a water impermeable structure excellent in workability. To aim.

The present invention is a means for solving the above problems, and the invention described in claim 1 is a water blocking structure in the joint surface of the side face of the upright revetment and the end face of the inclined revetment, the inclined revetment The water barrier material is filled in such a manner as to be in intimate contact with the side surface of the upright revetment and self-deforms into an arbitrary shape by external force and changes in solid and liquid progress by heating, and above and below the water barrier material Connected to the sides of the upright revetment, extending between the water blocking material and the stones above, to the water blocking material side of the stones above And a sheet-like upper regulating member that regulates the movement of the sheet .
According to the first aspect of the present invention, even when a gap is generated between the side face of the upright revetment and the end face of the inclined revetment in the event of an earthquake or the like , the sheet-like upper regulation member is located above the water blocking material. It can suppress that a large number of placed stones enter into the gap. Then, with the passage of time, the water blocking material is self-deformed due to the applied pressure to fill the gap, whereby the water blocking can be restored.

The invention as set forth in claim 2, in the invention described in claim 1, is connected to the side surface of the upright bank revetment extending toward between each stone of the lower and the water stopping material, the water stopping material The sheet-like lower regulation member which regulates movement to the above-mentioned each stone material side of the above is provided.
According to the invention of claim 2, even when a gap is generated between the side face of the upright revetment and the end face of the inclined revetment in the event of an earthquake or the like , the water blocking material is self-deformed by the sheet-like lower regulation member. Then, without leaching to the stone side located below the water barrier, the water blocking material can fill the gap and stay with the passage of time, whereby the water barrier can be restored.

According to a third aspect of the present invention, in the second aspect, each of the upper regulation member and the lower regulation member is in a direction in which the side surface of the upright revetment and the end surface of the inclined revetment are separated. It is characterized in that it is configured to be stretchable along it.
According to the invention of claim 3, when a gap is generated between the side face of the upright revetment and the end face of the inclined revetment in the event of an earthquake or the like, a large number of stones arranged above due to the extension of the upper regulating member Can be reliably suppressed. In addition, by the extension of the lower regulating member, it is possible to reliably suppress the leaching of the water blocking material to the stone side located below it.

In the invention described in claim 4, in the invention described in any one of claims 1 to 3, a heat transfer member is disposed in the water blocking material, and a part of the heat transfer member is exposed to the outside. It is characterized by
The invention described in claim 5 is characterized in that, in the invention described in claim 4, the heat transfer member is disposed at a portion on the upright water revetment side of the water blocking material.
In the inventions of claims 4 and 5, by heating the heat transfer member, the water blocking material is heated to promote solid-liquid change, thereby filling the gap between the side surface of the upright revetment and the end face of the inclined revetment. The self-deformation of the water blocking material in the direction can be promoted.

  According to the water blocking structure according to the present invention, even when a gap is generated between the side face of the upright revetment and the end face of the inclined revetment in case of emergency, the water blocking on the mating surface is secured (restored). be able to. Also, in particular, the upper regulating member makes the end face of the inclined revetment abut the side face of the upright revetment, and after the construction of the water blocking material, inclines from the side of the upright revetment to the upper side of the upright revetment Since it is attached along the direction toward the front, it is possible to improve its workability more than before without the need for height work as in the prior art.

FIG. 1 is a water shield according to a first embodiment of the present invention, which is adopted as a mating surface of a side face of an upright revetment whose side face is a flat surface and an end face of a sloped revetment which is constituted by a caisson having a rectangular cross section. It is a schematic perspective view of a structure. FIG. 2 is a cross-sectional view taken along the line A-A in a plane parallel to the normal of the slope of the sloped revetment of FIG. 1. Fig.3 (a) is a figure which shows the bellows part provided in the lower control member or the upper control member, (b) is a figure which shows the folding part and weakening part which were provided in the lower control member or the upper control member. FIG. 4 is a view showing a state in which the end face of the inclined revetment is separated from the side face of the upright revetment in the water blocking structure according to the first embodiment of FIG. FIG. 5 shows that in the water blocking structure according to the first embodiment of FIG. 1, when the end face of the inclined revetment is separated from the side of the upright revetment, the asphalt mastic in the water blocking area is self-directed toward the side of the upright revetment It is a figure which shows a mode that it deform | transforms and it adheres. FIG. 6 shows a second embodiment of the present invention which is adopted as a mating surface of a side of an upright revetment constituted by a steel plate cell, a steel pipe sheet pile, a steel sheet pile or the like and whose side is a curved surface and an end face of an inclined revetment. It is a schematic perspective view of the water blocking structure which concerns on FIG. FIG. 7 is a plan view of an upper regulating member and a lower regulating member employed in the water blocking structure according to the second embodiment shown in FIG. FIG. 8 is a cross-sectional view taken along the line B-B of FIG. FIG. 9 is a cross-sectional view taken along the line C-C of FIG. FIG. 10 is a cross-sectional view taken along the line D-D of FIG. FIG. 11 is a plan view showing a state in which the lower regulating member shown in FIG. 7 is disposed on the side of the upright revetment. FIG. 12 is a perspective view showing a state in which the lower regulating member shown in FIG. 7 is disposed on the side of the upright revetment. FIG. 13 is a cross-sectional view showing a state in which the upper regulating member shown in FIG. 7 is disposed on the side face of the upright revetment. FIG. 14 is a perspective view showing a state in which the upper regulating member shown in FIG. 7 is disposed on the side of an upright revetment. 15 is a cross-sectional view taken along the line A-A in a plane parallel to the normal of the slope of the sloped revetment of FIG. 16 is an impermeable structure according to the second embodiment shown in FIG. 6, in which the asphalt mastic in the water blocking area is directed to the side of the upright revetment when the end face of the inclined revetment is separated from the side of the upright revetment. It is a figure which shows a mode that it deforms itself and it adheres. FIG. 17 is a cross-sectional view showing a conventional water blocking structure. FIG. 18 is a view showing a state in which the end face of the sloped revetment is separated from the side face of the upright revetment in case of emergency in the conventional water-impervious structure.

Hereinafter, modes for carrying out the present invention will be described in detail based on FIGS. 1 to 16. The same members as the conventional example and the corresponding members will be described using the same reference numerals.
The sea surface disposal site is adopted as a waste disposal site for final disposal of industrial waste and general waste. The sea surface disposal site is constructed by the upright revetment 2 and the sloped revetment 3 so as to surround four sides of the landfill area. As shown in FIG. 1, the upright levee revetment 2 is constructed of a concrete caisson having a rectangular cross section, a steel plate cell, a steel pipe sheet pile or a steel sheet pile as shown in FIG. . On the other hand, the sloped revetment 3 is constructed by throwing the upper stone 10 and the lower stone 11 on the side of the landfill disposal area of the caisson 6 with the rectangular caustic section installed on the rubble mound 5 built on the seabed And the landfill disposal side is formed on the slope 10b, and a synthetic resin water blocking sheet 8 embedded between the upper stone 10 and the lower stone 11 in the backlay layer 7 It is configured to have water blocking. The water blocking sheet 8 is made of thermoplastic low density polyethylene resin (LDPE) and has flexibility. The water blocking sheet 8 may be made of thermoplastic high density polyethylene (HDPE) or synthetic resin such as vinyl chloride.

  First, the first embodiment of the present invention, which is formed of a caisson having a rectangular cross section, and the side surface 2a is adopted as a mating surface of the side surface 2a of the upright revetment 2 and the end surface 3a of the inclined revetment 3 which are flat. The water blocking structure 1 according to is described. The water-impervious structure 1 according to the first embodiment is, for example, a slope (the upper stone 10) of the sloped revetment 3 on the side surface 2a of the upright revetment, such as a place where the upright revetment 2 and the sloped revetment 3 intersect. The end face 3a orthogonal to the slope 10a) is adopted as the mating face of the side face 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 at the point where the end face 3a strikes.

  The structure of the end portion of the sloped revetment 3 on the side of the upright revetment 2 configured as the water blocking structure 1 according to the first embodiment is configured as follows. As shown in FIG. 1 and FIG. 2, a number of lower stones 11 are stacked on the side of the landfill area of the caisson 6. The surface of the lower stone 11 is formed on a horizontal surface 11a and a slope 11b which is downwardly inclined toward the landfill area side continuously from the horizontal surface 11a. The water blocking sheet 8 is laid along the horizontal surface 11 a and the slope 11 b of the lower stone 11. The end on the side of the upright bank revetment 2 of the water blocking sheet 8 is disposed close to the side 2 a of the upright bank revetment 2. Formwork concrete block 12 is disposed along horizontal surface 11a and slope 11b of lower stone 11 at a predetermined distance away from side 2a of upturned revetment 2 on the side of inclined revetment 3 on the water blocking sheet 8. . The formwork concrete block 12 is formed in a rectangular shape in cross section. Above the water blocking sheet 8, a water blocking area 15 is formed between the side surface 2a of the upright revetment 2 and the formwork concrete block 12 in which the asphalt mastic 14 is filled. The water blocking area 15 by the asphalt mastic 14 is rectangular in cross section.

  The asphalt mastic 14 corresponds to a water blocking material because it has water blocking properties. The asphalt mastic 14 has a water-stopping property, solidifies at 20 ° C. or less, and has the property that solid-liquid change (phase change from solid to liquid) proceeds and liquidization occurs at 100 ° C. or higher by heating, In addition, it has the property of being self-deformable into an arbitrary shape by external pressure at normal temperature. The water blocking area 15 by the asphalt mastic 14 is divided into a lower first layer 16 and an upper second layer 17 in the cross section. The lower first layer 16 is a layer in which only the asphalt mastic 14 is thinly packed (for example, 1 cm to 10 cm in thickness) on the water blocking sheet 8. On the other hand, the second layer 17 on the upper side has a large number of stones 18 for a water blocking region having a substantially elliptical cross section in which the aspect ratio (for example, the long side of the stone 18 for water blocking is not more than 3 times the short side) is considered. It is a layer which is laminated and is filled with asphalt mastics 14 between the water blocking area stones 18 and 18. The plurality of water blocking zone stones 18 disposed in the second layer 17 are disposed to uniformly fill the asphalt mastic 14 in the second layer 17 particularly on the slope of the first layer 16. . A large number of water blocking area stones 18 disposed in the second layer 17 of the water blocking area 15 are disposed in a state of being separately stored in the plurality of wire nets 19 respectively. For example, as shown in FIG. 2, in the second layer 17, each wire mesh 19 accommodating a large number of stone materials 18 for water blocking area may be disposed for each layer along the vertical direction in the cross section.

  A heat transfer rod 25 which is a heat transfer member is disposed in the water blocking area 15 by the asphalt mastic 14. The heat transfer rod 25 is made of, for example, an iron rod. The heat transfer rod 25 is disposed on the side of the upright revetment 2 of the second layer 17 and on the lower stone 11 side in the entire cross section of the water blocking area 15. The heat transfer rod 25 is inserted in the water blocking area 15 along the horizontal surface 11 a and the slope 11 b of the lower stone 11. The upper end portion of the heat transfer rod 25 is exposed to the outside. A plurality of heat transfer rods 25 may be disposed in the water blocking area 15. For example, the plurality of heat transfer rods 25 may be separately disposed in the horizontally extending portion of the water blocking area 15 and the downwardly sloping portion of the water blocking area 15 toward the landfill disposal area. The asphalt mastic 14 can be heated by heat conduction to the entire heat transfer rod 25 by heating the upper end portion of the heat transfer rod 25 exposed to the outside. In addition, in order to change the portion on the side of the upright revetment 2 of the asphalt mastic 14 constituting the water blocking region 15 as fast as possible, the heat transfer rod 25 is placed on the portion of the water blocking region 15 on the upright revetment 2 side. It is better to arrange. Further, in the present embodiment, the heat transfer rod 25 is disposed in the second layer 17 of the water blocking area 15, but is disposed on the side of the upright revetment 2 of the first layer 16 and on the lower stone 11 side. May be A lower regulating member 26 is disposed between the water blocking area 15 of the asphalt mastic 14 and the lower stone 11, between the side surface 2 a of the upright revetment 2 and the end of the water blocking sheet 8.

  The lower regulating member 26 is configured to be extensible along the direction from the side surface 2 a of the upright revetment 2 to the inclined revetment 3. The lower regulating member 26 has one end connected to the side surface 2 a of the upright revetment 2 and the other end connected to the end of the water blocking sheet 8. The lower regulating member 26 is stretchable along a direction from the side surface 2 a of the upright revetment 2 to the inclined revetment 3 as shown in FIG. It is good also as composition provided with the bellows part 40 which becomes. Further, as shown in FIG. 3 (b), the sheet-like nonwoven fabric or a part of the civil engineering sheet is foldable along a direction from the side 2a of the upright revetment 2 to the inclined revetment 3 and a foldable portion 41a. It is good also as composition provided integrally with weakening part 41b which cuts easily by tensile force.

  Further, for connection between one end of the lower regulating member 26 and the side surface 2a of the upright revetment 2, for example, a fixing fitting (not shown) such as a stat bolt is projected from the side 2 a of the upright revetment 2 Alternatively, connection means for connecting one end of the lower regulating member 26 may be employed. The connection may be made by double-sided adhesive tape such as butyl rubber. In the present embodiment, the other end of the lower regulating member 26 is connected to the end of the water blocking sheet 8, but the lower regulating member 26 may be connected to the side surface of the formwork concrete block 12.

  On the upper surface of the water blocking area 15 by the asphalt mastic 14, an asphalt mat 27 is disposed as a covering member in order to push the asphalt mastic 14 toward the water blocking sheet 8 side. The covering member may be a steel material such as an iron plate. Then, the asphalt mastic 14 is brought into close contact with the side surface 2 a of the upright revetment 2 and the upper surface of the water blocking sheet 8 by pushing from the covering asphalt mat 27 so that the side 2 a of the upright revetment 2 and the inclined revetment 3 The mating face with the end face 3a is in close contact in a liquid tight manner and the water is sealed. The upper regulating member 30 is disposed above the covering asphalt mat 27. In the present embodiment, the upper regulating member 30 is disposed above the covering asphalt mat 27, but may be disposed below the covering asphalt mat 27.

  Similar to the lower regulating member 26, the upper regulating member 30 is configured to be extensible and contractible along the direction from the side surface 2 a of the upright revetment 2 to the inclined revetment 3. One end of the upper regulating member 30 on the side of the upright revetment 2 is connected to the side surface 2 a of the upright revetment 2, and the other end is connected to the formwork concrete block 12. In the present embodiment, the upper regulating member 30 is formed of two steel plate members 31 and 32. The two plate-like members 31 and 32 are stacked and integrally connected to each other so as to be stretchable. Then, the end of one plate member 31 constituting the upper regulating member 30 is connected to the side surface 2 a of the upright revetment 2, and the end of the other plate member 32 is connected to the formwork concrete block 12. Ru. As a result, the upper regulating member 30 can be expanded and contracted along the direction from the side surface 2 a of the upright revetment 2 to the inclined revetment 3. The upper stone 10 is stacked above the upper regulating member 30. In addition, the upper stone 10 is laminated directly on the upper surface of the water blocking sheet 8 on the lower stone 11 on the opposite side of the upright revetment 2 side of the backfill layer 7 of the inclined revetment 3 with the formwork concrete block 12 at the boundary. And be configured. Similar to the lower stone 11, the surface of the upper stone 10 to be stacked is formed as a horizontal surface 10a and a slope 10b which is continuously inclined downward toward the landfill disposal side from the horizontal surface 10a.

  Therefore, the connection between the end of one plate-like member 31 and the side surface 2a of the upright revetment 2 is, for example, a fixing bracket such as a stat bolt from the side 2a of the upright revetment 2 (shown in FIG. Approximately) may be used, and connection means for connecting the end of one plate member 31 to the fixing bracket may be adopted, and other connection means having good workability, for example, double-sided adhesive tape such as butyl rubber Connection means for connection by means of On the other hand, for the connection between the end of the other plate member 32 and the upper surface of the formwork concrete block 12, for example, a fixing bracket (not shown) such as a stud bolt or a hanger is protruded from the upper surface of the formwork concrete block 12. Alternatively, a connection means for connecting the end of the other plate member 32 may be adopted as the fixing bracket, or another connection means having good workability may be adopted.

  The upper regulating member 30 is, as shown in FIG. 3A, similar to the lower regulating member 26, the sheet-like non-woven fabric, a part of a civil engineering sheet, etc. The bellows portion 40 may be configured to be stretchable along the direction 3. In addition, as shown in FIG. 3 (b), a folding portion 41 a which can extend and contract along a direction from the side surface 2 a of the upright revetment 2 to the inclined revetment 3 in a sheet non-woven fabric or a civil engineering sheet etc. And the weakening part 41b which cut | disconnects easily by tensile force is good also as a structure provided integrally. In the present embodiment, the other end of the upper regulating member 30 (the end of the other plate member 32) is connected to the upper surface of the formwork concrete block 12, but the other end of the upper regulating member 30 (the other plate The end of the member 32 may be connected to the top surface of the covering asphalt mat 27.

  In addition, the lower regulating member 26, the water blocking sheet 8, the water blocking area 15, the covering asphalt mat 27, and the formwork concrete block which are disposed as described above are provided in the backing layer 7 at the end of the inclined bank revetment 3. A plurality of sets 12 and upper regulation members 30 are constructed along the vertical direction in the cross section. 1 and 2 show only one set in order to make it easy to understand.

  Next, the construction method of the water blocking structure 1 according to the first embodiment in the mating surface of the side surface 2 a of the upright revetment 2 and the end face 3 a of the inclined revetment 3 according to the embodiment of the present invention will be described. Here, the water blocking sheet 8, the formwork concrete block 12, the lower regulating member 26, the water blocking area 15, the covering asphalt mat 27 and the upper regulating member 30 are placed in the back-in layer 7 at the end of the inclined revetment 3. Explain the construction method to construct 1 pair construction.

First, the end face 3 a of the caisson 6 of the inclined revetment 3 is brought into contact with the side surface 2 a of the upright revetment 2. Subsequently, a large number of lower stone materials 11 are stacked on the side of the landfill disposal side of the caisson 6 of the sloped revetment 3, and the surface is sloped downward toward the landfill disposal side continuously from the horizontal surface 11a and the horizontal surface 11a. It forms in the surface 11b. Subsequently, the water blocking sheet 8 is laid on the horizontal surface 11 a and the slope 11 b of the lower stone 11. At this time, the end of the water blocking sheet 8 on the side of the upright revetment 2 is brought close to the side surface 2 a of the upright revetment 2.
Next, on the impermeable sheet 8 of the sloped revetment 3, along the horizontal surface 11a and slope 11b of the lower stone 11 at a position separated by a predetermined distance from the side 2a of the upright revetment 2 to the sloped revetment 3 side. Place the frame concrete block 12

Next, one end of the lower regulating member 26 on the upright dike revetment 2 side is connected to the side surface 2 a of the upright dike revetment 2, and the other end is connected to the end of the water blocking sheet 8.
Next, along the horizontal surface 11 a and slope 11 b of the lower stone 11 on the water blocking sheet 8 between the side 2 a of the upright revetment 2 and the formwork concrete block 12 provided at the end of the inclined revetment 3. Only the asphalt mastic 14 is filled to form a thin first layer 16 (water-blocking area 15) in which only the asphalt mastic 14 is filled. At this time, since the lower regulating member 26 is disposed between the side surface 2 a of the upright revetment 2 and the end of the water blocking sheet 8, the asphalt mastic 14 does not flow to the lower stone 11 side. Subsequently, a plurality of stone nets 18 for water blocking area having a substantially elliptical cross section are respectively accommodated in a plurality of wire nets 19. Thereafter, a large number of water blocking area stones 18 accommodated in the wire mesh 19 are sequentially stacked above the first layer 16. Furthermore, the heat transfer rod 25 is inserted between the water blocking area stones 18 and 18 at an arbitrary position on the side of the water blocking sheet 8 on the upright bank and revetment 2 side. At this time, the upper end portion of the heat transfer rod 25 is inserted so as to protrude from the upper stone 10 to the outside after the upper stone 10 is stacked. Subsequently, the asphalt mastic 14 is filled between the water blocking area stones 18 in the wire mesh 19 to form the second layer 17 (water blocking area 15).

  Next, the covering asphalt mat 27 is disposed on the upper surface of the second layer 17 of the water blocking area 15 by the asphalt mastic 14. Asphalt mastic 14 is pushed into the side of the water blocking sheet 8 by the covering asphalt mat 27. As a result, a pressure (overpressure) from above by the covering asphalt mat 27 generates a force that causes the asphalt mastic 14 in the water blocking area 15 to self-deform in a flat shape, and the upright embankment 2 side of the water blocking area 15 (Asphalt mastic 14) adheres to the side 2a of the upright revetment 2 in a fluid tight manner, and the lower surface of the water blocking area 15 (asphalt mastic 14) maintains a fluid tight tightness to the impermeable sheet 8 can do.

Next, the upper regulating member 30 is disposed above the covering asphalt mat 27, and the end portion of one plate member 31 as the upper regulating member 30 on the upright dike revetment 2 side is a side face of the upright dike revetment 2. Connect to 2a. Subsequently, the end of the other plate member 32 as the upper regulating member 30 on the opposite side to the upright dike revetment 2 side is connected to the formwork concrete block 12.
Next, the erected revetment 2 side bordering the formwork concrete block 12 is the upper levee revetment 2 bordering the formwork concrete block 12 on the upper surface of the upper regulating member 30 including the formwork concrete block 12 and On the opposite side, a number of upper stones 10 are laminated on the upper surface of the water blocking sheet 8. Then, the upper stone 10, like the lower stone 11, is continuously formed from the horizontal surface 10a and the horizontal surface 10a on the sloped surface 10b that slopes downward toward the landfill area, and the backing layer 7 is formed. Form. At this time, the upper end portion of the heat transfer rod 25 is slightly protruded from the upper stone 10 to the outside. In this manner, the water blocking structure 1 according to the first embodiment is constructed on the mating surface of the side surface 2 a of the upright revetment 2 and the end face 3 a of the inclined revetment 3.

Next, the operation of the water blocking structure 1 according to the first embodiment of the present invention will be described.
In normal times, as shown in FIG. 2, the mating surface of the side face 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3, such as a place where the upright revetment 2 and the inclined revetment 3 intersect, Asphalt mastic 14 which forms the water blocking area 15 (the first layer 16 and the second layer 17) provided at the end of the sloped revetment 3 on the upper surface of the side 2a of the revetment 2 and the water blocking sheet 8 of the sloped revetment 3 The liquid tightness of the fluid tight seal ensures its impermeability.

When the side 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 are separated in the event of an earthquake or the like, as shown in FIG. The asphalt mastic 14 (including the covering asphalt mat 27) at the end portion is separated, and both the upper regulating member 30 and the lower regulating member 26 extend. As a result, a large number of upper stone members 10 can not enter into the gap 35 between the side surface 2 a of the upright revetment 2 and the asphalt mastic 14 at the end of the inclined revetment 3 by the extended upper regulating member 30. On the other hand, the extended lower regulating member 26 regulates the leaching of the asphalt mastic 14 to the lower stone 11 side.
Thereafter, as shown in FIG. 5, with the passage of time, that is, with the passage of time from about one week to about one month, the asphalt mastic 14 of the water blocking area 15 is erected by the overburden from the covering asphalt mat 27. By self-deforming to the side 2a side of the revetment 2 and filling the gap 35 and adhering to the side 2a of the upright revetment 2 in a fluid tight manner, the impermeability is restored.

  In the event of an emergency, after the side face 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 are separated, the asphalt mastic 14 in the water blocking area 15 is heated via the heat transfer rod 25 14 to soften the self-deformation so as to accelerate self-deformation toward the side 2a of the upright revetment 2 of the asphalt mastic 14 and to accelerate adhesion of the upright revetment 2 to the side 2a by the asphalt mastic 14 There is. As a result, the asphalt mastic 14 can be brought into close contact with the side surface 2 a of the upright revetment 2 in several days.

  As described above, the water blocking structure 1 according to the first embodiment of the present invention particularly includes the stretchable upper regulating member 30, and the upper regulating member 30 includes the upper stone 10 and the covering asphalt mat 27 ( One end of the upright revetment 2 side is connected to the side 2 a of the upright revetment 2 and the other end is connected to the formwork concrete block 12. Thus, when the side face 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 are separated at the time of an emergency such as an earthquake, the upper restricting member 30 is extended. The upper stone 10 can not get into the gap 35 between the side 2 a of the upright revetment 2 and the asphalt mastic 14 at the end of the inclined revetment 3, and the asphalt mastic 14 self-deforms with the passage of time, and the gap By filling 35 and bringing it into close contact with the side 2 a of the upright revetment 2, the impermeability can be restored.

  Moreover, in the water blocking structure 1 according to the first embodiment of the present invention, in particular, the stretchable lower regulating member 26 is provided, and the lower regulating member 26 extends between the water blocking area 15 and the lower stone 11. One end of the upright revetment 2 side is connected to the side 2 a of the upright revetment 2, and the other end is connected to the impermeable sheet 8. Thereby, when the side 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 are separated in the event of an emergency, the asphalt mastic 14 self-deforms to the lower stone 11 side by the extended lower regulating member 26 and leaches out And the asphalt mastic 14 self-deforms in the direction of filling the gap 35 and comes into tight contact with the side surface 2 a of the upright revetment 2.

  Furthermore, in the water blocking structure 1 according to the first embodiment of the present invention, the heat transfer rod 25 is disposed at a position on the upright bank revetment 2 side and the water blocking sheet 8 side in the water blocking region 15 by the asphalt mastic 14 Therefore, in case of emergency, after the side 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 are separated, the asphalt mastic 14 in the water blocking area 15 is heated via the heat transfer rod 25 By promoting the self-deformation of the asphalt mastic 14, the adhesion of the upright mast revetment 2 to the side surface 2 a of the asphalt mastic 14 can be accelerated.

  Furthermore, in the water blocking structure 1 according to the first embodiment of the present invention, the water blocking area 15 by the asphalt mastic 14 is in close contact with the water blocking sheet 8 and the first layer 16 is filled with only the asphalt mastic 14 And the second layer 17 disposed above the first layer 16 and filled with the asphalt mastic 14 between the large number of water blocking area stones 18 and 18, the water blocking area 15 and the water blocking It is possible to ensure the water blocking of the interface between the sheet 8 and to significantly improve the water blocking as compared with the conventional method in which the lamination of the water blocking zone stone 18 and the filling of the asphalt mastic 14 are alternately performed. Can. Further, in the second layer 17 of the water blocking area 15, the stones 18 for the water blocking area are stacked in a state of being accommodated and restrained in the respective wire nets 19. It becomes difficult to slide along the slopes of the first layer 16), and it is possible to stably arrange each water blocking zone stone material 18 along the slopes, and the workability can be remarkably improved.

  Next, according to the present invention, a steel plate cell, a steel pipe sheet pile, a steel sheet pile or the like is employed as a mating surface of the side surface 2a of the upright revetment 2 and the end surface 3a of the inclined revetment 3 whose side surface 2a is a curved surface. A water blocking structure 1a according to a second embodiment will be described based on FIGS. The water blocking structure 1a according to the second embodiment described below differs from the water blocking structure 1 according to the first embodiment shown in FIGS. 1 to 5 in the upper regulating member 30a and the lower regulating member 26a. Therefore, the configurations of the upper regulating member 30a and the lower regulating member 26a will be mainly described.

  The upper restricting member 30a and the lower restricting member 26a are, as shown in FIGS. 6 to 10, a first sheet 38 having a rectangular shape in a plan view and a first sheet 38 having a rectangular shape in a plan view. And a sheet 39. The first sheet 38 and the second sheet 39 are each formed of a water-impervious sheet made of polyethylene. The first sheet 38 and the second sheet 39 may be a non-woven fabric or a civil engineering sheet. The second sheet 39 is formed to have a smaller area than the first sheet 38. The first sheet 38 in the other direction (direction orthogonal to one direction) such that one end of the first sheet 38 and one end of the second sheet 39 on the opposite side substantially coincide with each other in one direction. The second sheet 39 is disposed on the first sheet 38 such that both ends of the second sheet 39 substantially coincide with both ends of the second sheet 39. The entire range of the curved edge of the second sheet 39 and the upper surface of the first sheet 38 are joined at a heat weld 40. Thereby, the upper regulating member 30a and the lower regulating member 26a are formed such that one end side in one direction is a portion of two layers consisting of the first sheet 38 and the second sheet 39, and the other end side in one direction is the first It will be formed as a part of one layer which becomes only the sheet 38.

  In the first sheet 38, a plurality of notches 42 are formed radially from one end in one direction in a range in which the second sheet 39 is disposed. On the other hand, a plurality of notches 43 are radially formed in the second sheet 39 from the one end in one direction to the other end which is the curved portion. The notches 43 of the second sheet 39 are located between the notches 41 of the first sheet 38 in plan view. The curvature of the curved portion of the second sheet 39 is, for example, substantially the same as the curvature of the curved surface of the steel plate cell of the upright revetment 2.

  And when arranging the lower control member 26a, as shown in FIG. 11, FIG. 12 and FIG. 15, referring to FIG. 6 also, many lower stone materials on the landfill disposal side of the caisson 6 of the inclined revetment 3 11 are stacked, and the surface is formed on a horizontal surface 11a and a slope 11b which is downwardly inclined toward the landfill area continuously from the horizontal surface 11a, and then on the other end side in one direction of the lower regulating member 26a A first sheet 38 (one layer portion) is connected along a curved surface of the side surface 2 a of the upright revetment 2 by, for example, a double-sided adhesive tape such as butyl rubber.

  Subsequently, a predetermined portion of the lower regulating member 26a is bent at a substantially right angle, and the first sheet 38 and the second sheet 39 (portions of two layers) on one end side in one direction which has risen outward are made of lower stone 11 It arranges on the horizontal surface 11a or slope 11b. The first sheet 38 directly contacts the horizontal surface 11 a or slope 11 b of the lower stone 11. At this time, as shown in FIGS. 11 and 12, the first sheet 38 and the second sheet 39 (portions of two layers) which are folded open widely as the cut portions 42 of the first sheet 38 go outward. It will be in a state, and each cut part 43 of the 2nd sheet 39 will also be arranged on the horizontal surface 11a or slope 11b of the lower stone 11 in the state widely opened as it goes outward. However, since the respective notches 42 of the first sheet 38 and the respective notches 43 of the second sheet 39 are formed at positions different from each other in plan view, the two layers extend in the vertical direction. The site that is opened is not revealed. Subsequently, the water blocking sheet 8 is laid on the upper surfaces of the first sheet 38 and the second sheet 39 (portions of two layers). Thereafter, as described above, after the formwork concrete block 12 is placed, the water blocking area 15 is formed by the asphalt mastic 14.

  Thereafter, when arranging the upper regulating member 30a, as shown in FIGS. 13 to 15, also referring to FIG. 6, the first sheet 38 and the second sheet which are one end side in one direction of the upper regulating member 30a. The sheet 39 (two-layered part) is disposed along the curved surface of the side 2a of the upright revetment 2 and the first sheet 38 and the side 2a of the upright revetment 2 are connected by double-sided adhesive tape such as butyl rubber. . At this time, as shown in FIGS. 13 and 14, the first sheet 38 and the second sheet 39 (portions of two layers) are in a state of being largely opened as the cut portions 42 of the first sheet 38 go to the upper end, The notches 43 of the second sheet 39 are also arranged along the curved surface of the side surface 2 a of the upright revetment 2 in a state of being largely opened toward the upper end. However, since each cut portion 42 of the first sheet 38 and each cut portion 43 of the second sheet 39 are formed at positions different from each other in a plan view, along the radial direction in the two layers The site that is opened is not revealed.

  Subsequently, a predetermined portion of the upper regulating member 30a is bent at a substantially right angle, and the first sheet 38 (a portion of one layer) on the other end side in one direction which has risen outward is a water blocking area 15a by the asphalt mastic 14 Place on top. Subsequently, the covering asphalt mastic 27 is disposed on the upper surface of the first sheet 38 (one layer portion). Thereafter, as described above, the upper stone 10 is laminated to finally form the backing layer 7.

Next, the operation of the water blocking structure 1a according to the second embodiment of the present invention will be described.
Normally, as shown in FIG. 15, the mating surface of the side 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 is the upper surface of the side 2a of the upright revetment 2 and the upper surface of the water blocking sheet 8 of the inclined revetment 3. As the asphalt mastic 14 forming the water blocking area 15 (the first layer 16 and the second layer 17) provided at the end of the sloped revetment 3 adheres in a fluid tight manner, its water blocking property is secured. There is.

  When an earthquake or the like occurs, as shown in FIG. 16, even if the asphalt mastic 14 (including the covering asphalt mat 27) at the end of the inclined revetment 3 is separated from the side 2 a of the upright revetment 2, the upper part Since the restricting member 30 a covers the gap 35 between the side surface 2 a of the upright revetment 2 and the water blocking area 15 by the asphalt mastic 14 from the upper side, many upper stones 10 can not enter into the gap 35. On the other hand, since the gap 35 is covered from the lower side by the lower regulating member 26a, the asphalt mastic 14 is restricted from being deformed and leached to the lower stone 11 side.

  Thereafter, as shown in FIG. 16, with the passage of time, the asphalt mastic 14 in the water blocking area 15 self-deforms on the side 2 a side of the upright revetment 2 by the overpressure from the covering asphalt mat 27, and the gap 35 Immersion and close contact with the side 2 a of the upright revetment 2 will restore the impermeability.

  As described above, in the water blocking structure 1 a according to the second embodiment of the present invention, in particular, the upper regulating member 30 a extending between the upper stone 10 and the water blocking area 15 by the asphalt mastic 14, and the asphalt mastic 14 And a lower regulating member 26 a extending between the water blocking area 15 and the lower stone 11. Thereby, even when the side surface 2a of the upright revetment 2 and the end face 3a of the inclined revetment 3 are separated, similarly to the water blocking structure 1 according to the first embodiment described above, in the event of an earthquake etc. The restriction member 30a prevents the large number of upper stones 10 from entering the gap 35 between the side surface 2a of the upright revetment 2 and the asphalt mastic 14 at the end of the inclined revetment 3, and further by the lower restriction member 26a. As the asphalt mastic 14 can be restricted from self-deformation and leaching to the lower stone 11 side, the asphalt mastic 14 self-deforms in a direction to fill the gap 35 with the passage of time, and By sealing the side surface 2a in a liquid tight manner, the water blocking can be restored.

  1, 1a impermeable structure, 2 upright revetment, 2a side, 3 inclined revetment, 3a end face, 7 back layer, 8 impermeable sheet, 10 upper stone, 11 lower stone, 14 asphalt mastic (water blocking material), 15 water stop area, 16 first layer, 17 second layer, 18 stone material for water stop area, 25 heat transfer rod (heat transfer member), 26, 26a lower regulating member, 30, 30a upper regulating member, 31 one plate Members, 32 other plate members, 38 first sheet, 39 second sheet, 42 notches (first sheet), 43 notches (second sheet)

Claims (5)

A water blocking structure at the mating surface of the side of the upright revetment and the end face of the inclined revetment,
The sloped revetment is filled so as to be in intimate contact with the side of the upright revetment, and is self-deforming to an arbitrary shape by an external force and a solid-liquid change progresses by heating;
A number of stones arranged above and below the water blocking material,
A sheet-like upper portion connected to the side surface of the upright revetment, extending toward the space between the water blocking material and the stones above, and restricting the movement of the stones above the water toward the water blocking material And a restricting member. A sheet-like lower portion connected to the side surface of the upright revetment, extending toward the space between the water blocking material and the lower stones, and restricting the movement of the water stopping material toward the lower stones. The water blocking structure according to claim 1, comprising a restriction member.   Each of the said upper control member and the said lower control member is comprised so that expansion and contraction is possible along the direction to which the side of the said upright revetment and the end surface of the said inclined revetment are separated. Water blocking structure.   The water blocking structure according to any one of claims 1 to 3, wherein a heat transfer member is disposed in the water blocking material, and a part of the heat transfer member is exposed to the outside.   The said heat-transfer member is arrange | positioned in the site | part by the side of the upright embankment of the said water blocking material, The water impermeable structure of Claim 4 characterized by the above-mentioned.