JP2013111547A - Method for constructing vertical water-blocking layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a gap or the like from occurring to a water-blocking layer by using a cylindrical container in the case that a water-blocking material is poured into a pit of the connection part of a wall, which is constructed by erecting formed steel or the like, when a sea area is surrounded by a water-blocked and strengthened shore to construct a reclaimed land for wastes.SOLUTION: It is necessary to fill gaps with a water-blocking material, the gaps being formed as vertical pits 30 having small cross sections formed in the connection parts of steel plates, when a water-blocking wall is constructed by erecting the steel plates in line. In order to feed the water-blocking material to such gaps, a pouring device, which is formed by providing the bottom part of a tubular container 31 with a valve member 35, is used. The inside of the container 31 is filled with the water-blocking material 38, and the valve member 35 is opened at the bottom part of the pit 30 to discharge the water-blocking material 38, and then the material is piled up from the bottom of the pit 30 to form a stable water-blocking layer in the pit.

Description

  The present invention relates to a management-type revetment that partitions a landfill site such as a waste landfill disposal site, in particular, a structure in which sheet piles, caissons, etc. are constructed in a row, and when building a revetment that partitions a landfill site from the outside sea area, The present invention relates to a method for water shielding treatment at a connecting portion between the structures.

  Waste such as general waste and industrial waste generated in large quantities in urban areas, etc. is deposited on a disposal site partitioned by a partition revetment so as to partition the sea area into a predetermined area, and between the surrounding sea Water is not distributed. In addition, the contaminated water that has come into contact with the waste contained in the partition of the landfill is subjected to detoxification treatment and then released into the sea.

  The partition revetment for depositing the waste, partitioning it from the open sea and confining it is constructed in a row on the ground subjected to the water shielding treatment by applying a water shielding treatment to the ground supporting the partition revetment. It is integrated with the standing caisson, sheet pile, and other structures to partition the open sea.

  As a partition revetment of a waste landfill disposal site as described above, it is known to use a method of arranging sheet piles as disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-162325. In the known example, columns of H-shaped steel of an arbitrary size are erected on the seabed ground in a row, and at locations where the H-shaped steels are connected, a water shielding material is filled between the columns. A water layer is provided, and the H-type steel main body and the water shielding layer constructed by the connection part are integrated to construct a revetment wall that exhibits water shielding (see, for example, Patent Document 1).

JP 2004-162325 A

  In the conventional example, in addition to a general H-shaped steel as a sheet pile, a curved plate having an arbitrary size is combined to form a cylindrical member having a predetermined large diameter, and a joint member is connected to a connecting portion of the large diameter tube. Are provided in combination, and the vertical space formed in the connecting portion of the cylinder is filled with a water shielding material to constitute a wall in which the main body and the layer of the water shielding material are integrated.

As the water-impervious wall with a sheet pile as described above, a sheet pile wall can be constructed using a sheet pile having an arbitrary cross-sectional shape, but in addition, a solid rectangular substantially box-shaped caisson made of steel or concrete is used. It is constructed in a line. Then, as described in the conventional example of the above publication, a relatively wide water-impervious wall is constructed by constructing a layer of a water-impervious material in the gap between the caisson connecting portions.
In addition, about the structure of the partition revetment in the said prior art example, the general characteristic of the revetment, etc., it explains in the description section of the revetment structure of this application.

  In the known technology exemplified as the conventional example, a water shielding material such as asphalt mastic is injected from the vertical thin and long space portion with respect to the vertical space portion provided in the connection portion of the caisson or the sheet pile. It is filled so that no gaps are created.

  The vertical space formed in the connection portion of the sheet pile wall is a long hole-shaped space with a relatively small cross-sectional area, and since it is filled with seawater, it is injected into the vertical space from above. The water shielding material to be dropped falls in a narrow space while removing the water therein, and builds up a water shielding layer in a state of being piled up from the bottom.

  However, the generally used asphalt mixture as a water shielding material, which is heated to a predetermined temperature and improved in fluidity, is poured from above into a filling hole, so that water can be contained in a narrow space. It cools gradually while falling while removing. Then, in the middle of descending underwater, it becomes an indeterminate lump or small granular material and is deposited in a state of being stacked from the bottom of the hole.

  As described above, when the water shielding material is poured into the water from the top of the hole and filled, the water shielding material settles down to the bottom of the hole and accumulates in order from the bottom of the hole. A certain amount of time is required before water can be naturally removed from the impermeable layer and water can be maintained well. It becomes.

  In the present invention, the water shielding material is handled in a cylindrical holding member, inserted to the bottom of the hole to be filled, and then injected so that the water shielding material is sequentially deposited from the bottom to the top of the hole. With the purpose of providing a construction method that prevents the formation of gaps such as water in the layer of water shielding material that is deposited while maintaining a high temperature, and enables the construction of a good quality water shielding layer Yes.

  Therefore, even if the cross-sectional area is relatively small, that is, it is narrow and vertically long, but it is a space, by using a technique to fill the water shielding material without gaps from the bottom of the hole, It is possible to prevent the water from flowing inside and outside the partition revetment and to partition the waste landfill site.

TECHNICAL FIELD The present invention relates to a method for constructing a water shielding layer in a partition revetment for partitioning a sea surface landfill site such as waste from the open sea.
In the invention according to claim 1, when the partition revetment is erected in a row with a ready-made structure such as a sheet pile, a water shielding treatment is performed between the erected structures. In order to fill a space configured as a vertical hole with a small cross-sectional area with a vertical cross-section, a container provided with a valve member that can be opened and closed at the lower end portion in order to be filled with a water shielding material, The valve member provided in a state where it is suspended by the operation wire attached to the container and is pulled up by the operation wire at the lower end portion of the cylinder of the container is opened by loosening the operation wire and accommodated in the container. The water shielding material is discharged, and the water shielding material is supplied upward from below the vertical hole of the water shielding layer construction part.

  According to a second aspect of the present invention, a valve member that seals an opening under the cylindrical container is supported by an operation wire disposed inside or outside the cylinder of the container, and is operated from an operation unit of the work device. The wire member is operated to open and close the valve member.

  According to a third aspect of the present invention, the cylindrical container has an outer diameter that can be inserted with a margin with respect to the inner cross section of the vertical hole of the connecting portion of the structure to be filled with the water shielding material. It is configured as having an arbitrary cross-sectional shape and length, drains the water shielding material from the bottom of the container, deposits the water shielding material from the bottom to the top of the vertical hole, and fills the space of the connecting portion It is characterized by that.

  According to a fourth aspect of the present invention, the cylindrical container has a structure capable of holding the water shielding material so as not to directly contact the water, and when the valve at the lower end of the container is opened to discharge the water shielding material. Only in a state where the water shielding material is allowed to come into contact with water, the water shielding material can be handled such as being discharged.

  In the invention of claim 5, the valve member used for closing the lower end of the cylindrical container matches the tip cross-sectional shape of the container, and is inserted from the lower part of the container to close the hole, or the container It is comprised as a member which performs the effect | action which closes a hole by being pressed by the lower end surface of this, It is characterized by discharging the water shielding material from the hole opened to the lower end of the said container by moving the said valve member.

  According to a sixth aspect of the present invention, the valve member provided at the lower end portion of the cylindrical container is constituted by a member that can swing via a support shaft provided at the lower end of the container, and the valve member can be opened and closed. It is characterized by that.

  The invention according to claim 7 is that a plurality of protrusions provided on the inner surface of the lower end portion of the cylindrical container, wherein the valve member provided at the lower end portion of the cylindrical container is formed of a circular plate having an arbitrary thickness. When the operation is carried out by an operation wire connected to one end of the disk, and the water shielding material accommodated in the cylinder is discharged. Next, when the water shielding material is filled Further, the disk-shaped valve is configured to be closed by an operator operating it.

  In the invention of claim 8, the valve member provided at the lower end portion of the cylindrical container is formed of a hemispherical or spherical member, and the arcuate upper surface of the valve member is formed with respect to the lower end portion of the cylindrical container. In the pressed state, a sealing action is performed from the lower surface portion, and the opening of the lower end portion of the cylinder is opened and closed in a state where the valve member is pulled up or loosened by an operation wire.

  The invention according to claim 9 is a cross section of the lower end portion of the container when the valve member provided at the lower end portion of the cylindrical container is used to be inserted and sealed from the lower end portion of the container. Use a cross-section corresponding to the shape, which is tapered and gradually decreases in diameter, and opens the opening at the lower end of the cylinder by opening the valve member with an operation wire or by separating it from the container and dropping it. Features.

  As described above, when supplying the water shielding material to the vertical hole of the connecting part for constructing the water shielding layer, the water shielding material put in the bucket as in the conventional method is injected from above the space part of the vertical hole. Instead, the container filled with the water shielding material can be suspended and inserted up to the bottom of the narrow vertical hole, and can be filled so as to be stacked from the bottom of the vertical hole.

And the cylinder of the size which can demonstrate workability satisfactorily according to the cross section of the gap made into the object in any case where the plane area of the vertical hole which is the object of the water shielding treatment is wide or in the case of the narrow cross section By using the container, the processing operation can be performed efficiently.
In addition, the cylindrical container used for filling the water shielding material can be configured using any material in addition to the metal tube, but a large amount of water shielding material is placed in a long cylinder. Even when accommodated, the cylinder may be made of a material that does not expand.

  In addition, since the cylindrical container handles the water shielding material in a state where the fluidity is maintained well by heating to a high temperature, it is necessary to use a device using a material that is not affected by the temperature. It is. Furthermore, the cylindrical container that handles the water shielding material of the present invention can maintain good handleability unless a material having a property that the water shielding material easily adheres to the inner surface of the wall is used.

It is sectional drawing of the partition revetment shown as an example which constructs the impermeable wall of the present invention. It is a top view of the impermeable wall by a sheet pile row. It is explanatory drawing of the water-impervious wall constructed by lining up large-diameter pipes. The container used for the water-impervious construction of the present invention and the state of the gap as a vertical hole at the connecting portion of the wall are explained. FIG. (A) is a case where a container containing a water-impervious material is inserted into the vertical hole. (B) is an explanatory view of a state in which the water shielding material is discharged from the container. The other structure of the container of this invention is shown, The figure (A) is explanatory drawing which shows the structure of a container lower part, The figure (B) is explanatory drawing seen from the container top. It is explanatory drawing which shows the other structure of the valve member provided in the container lower part. It is explanatory drawing of the example using a hemispherical valve member. It is explanatory drawing of the example which does not collect | recover a valve member.

According to the illustrated embodiment, a method for constructing a vertical impermeable layer on a management-type revetment used as a partition revetment of the present invention will be described.
In FIG. 1 for explaining the partition revetment to which the present application relates, a disposal site for landfilling construction waste is constructed for partitioning from the outside sea, and is impervious so as to surround a predetermined area. In order to construct the wall 1, a sheet pile is erected on the impermeable formation of the seabed ground to constitute a wall protruding from the sea surface to a predetermined height.

  The partition revetment 1 is constructed by penetrating the water-impervious layer 3 by penetrating the water-impervious layers 3 and the water-impervious layers 3 and 2a of the seabed ground by penetrating the impermeable walls 2 and 2a in which the wall of the sheet piles are arranged. A surface treatment layer is provided between the sheet pile walls 2 and 2a configured in the two rows, and is provided with a packed layer 5 filled with high-quality sandy soil or clay, and the upper surface thereof is paved with concrete or asphalt. 6 for use as a work compartment or the like.

  And, the inside of the area surrounded by the partition revetment 1 is used as a disposal site 7 for depositing construction debris to be discarded, and water etc. touching the waste accumulated in the disposal site leaks to the open sea. Protect the outside seawater from entering the compartment.

  The partition revetment 1 can be constructed by placing sheet piles of an arbitrary shape such as H-shaped steel or flat plate in a row, and for example, in FIG. 2, a column 11 of a steel box sheet pile is used. An example of constructing as one row of sheet pile walls 10 is shown. In the example shown in FIG. 2, the connection member between the outer member 15 of the joint portion 17 and the inner member 15 a is fixed to the end portion of each flange 13 of the steel box-type sheet pile 11 via a welded portion. A joint space is formed inside the joint portion by connecting and providing the steel box sheet pile so as to combine the connected members.

  After that, by filling the joint inner space with a water shielding material and performing a treatment as a filling portion, a water shielding wall in which the steel plate portion and the water shielding material are combined together can be constructed, By filling the part with a water shielding material and constructing it as the filling part 18 of the water shielding layer, the water shielding at the joint part can be easily secured. Furthermore, the water impermeability at the sheet pile wall can be exhibited by using the filling portion into which the water shielding material is injected so as to block the space of the connection portion of the sheet pile.

  As the water shielding material filled in the internal space of the joint portion of the sheet pile, it is common to use an asphalt mixture in which the components to be mixed and the fluidity are adjusted from the viewpoint of its handleability and reliability. In the example described below, the example using an asphalt mixture as the water shielding material is described. However, it is a matter of course that other water shielding materials can be used.

  As in the example shown in FIG. 2, a sheet pile wall in which steel box-type sheet piles are erected in rows is constructed in two rows, and a water shielding treatment is applied to each of the rows of the sheet piles to form an integral water shielding layer. Build up. Then, processing is performed so as to fill a gap between the two sheet pile rows, a work path or a work section is constructed in a portion between the sheet pile rows, and work for performing landfill processing or management It is also possible to use it for arbitrary purposes.

  In addition to the construction method of the sheet pile wall using the steel box sheet pile, as shown in FIG. 3, the pipes 21 and 21a having large diameters are erected in a single line, and have an arbitrary thickness or width. The steel pipe sheet pile type partition revetment 20 which has can also be constructed | assembled. In the example illustrated in FIG. 3, in order to arrange the large-diameter pipes 21 and 21a, the lower ends thereof are driven into the ground of the seabed ground to a predetermined depth, or the seabeds are erected. Arbitrary means such as a means of digging a groove with a predetermined depth in the ground and embedding and fixing the lower part of these large-diameter pipes to be erected in the groove is used.

The steel pipe sheet pile type partition revetment 20 described in FIG. 3 is constructed in a state where columns of large-diameter pipes 21 and 21a as main bodies are arranged, but along a line passing through the center of each pipe of the pipe row. The central connecting portion 22 is configured.
The connecting portion 22 is configured by connecting an insertion portion 24 provided on the side of the other pipe 21a to a receiving portion 23 having a vertical slit 23a provided on the side of one pipe 21. . As the insertion portion 24, a protrusion having a substantially T-shaped cross section is provided and connected to the receiving portion 23 provided on the side surface of the other pipe 21a in a state where the insertion portion 24 is inserted from the end of the slit 23a. doing.

  In addition, a second connecting portion 25 is provided corresponding to one side of the row of the large-diameter pipes 21 on the sea side or the land side, and receiving pipes 26 and 27 are provided on the side of the pipe 21. The flange 29 which is attached and bent at both ends of the connecting plate 28 is inserted through vertical slits provided in the receiving pipes 26 and 27 to form a water-impervious wall, and the central portion of the large-diameter pipe 21 In combination with the first water shielding part that connects the two, the wall is provided as a wall that exhibits a water shielding effect.

  The receiving portions 26 and 27 have a structure in which, after the pipe 21 is erected, the end portions of the connection plate 28 are inserted into slits provided in the pipe of the receiving portion, and can be sequentially connected. An auxiliary plate such as a flange 29 and an elastic body such as a rubber plate that can assist in the water shielding function are added to the end portion of the connection plate 28 to be inserted into the small diameter pipe of the receiving portion. It is good to process so that a clearance gap etc. may not arise inside a small diameter pipe. In addition, it is more preferable to fill each of the connection portions with a water shielding material so as not to cause a gap.

  In the state where the steel pipe sheet pile partition revetment 20 is constructed with a pipe wall, on one side of the wall constituted by the large diameter pipe row, a curved surface of the pipe 21 and a connection plate 28 are provided as a continuous wall, A substantially triangular space is formed by the inside of the plate member and the pipe surface. Therefore, the space portion is filled with a water shielding material such as an asphalt mixture to construct a sealing portion 25A, and it acts as an integral water shielding wall together with the pipe.

  In addition, as the large diameter pipes 21 and 21a for constructing the steel pipe sheet pile type partition revetment 20, a steel pipe having an arbitrary diameter can be used, and the connecting portion 22 of the large diameter pipe and the insertion plate In the connecting portion 25 using a small diameter pipe, the one provided with the vertical slit 23a on the side surface is welded and attached to the side surface of the large diameter pipe, and the connecting portion 22 between the large diameter pipes 21 and 21a is attached. So that the connection can be made easily. In addition, it is also possible to construct a reliable water-impervious wall by using a connection structure such as a pipe that has been used in the past to provide a water-blocking connection structure.

  As described above, when constructing a water-impervious wall by applying a water-impervious treatment to a large-diameter pipe connection portion in the steel pipe sheet pile partition revetment on a wall constructed by arranging large-diameter pipes in a row. Also, it is necessary to carry out a process of constructing a water-impervious layer with a predetermined width on the seabed ground where the revetment is erected. Then, by constructing the seabed ground and the revetment for constructing the revetment as an integral impermeable layer, the impermeable layer constructed so as to surround the landfill where waste is dumped can be used effectively.

  When constructing the impermeable revetment, for example, a filling layer 18 in the connection space where the connection portion 17 of the H-shaped sheet pile in the example of FIG. 2 is located, or a sealing portion provided in a substantially triangular space in FIG. Like 25A, a water shielding material can be satisfactorily maintained at a connecting portion such as a sheet pile by filling a vertical hole having a relatively wide cross section with a water shielding material.

By the way, in the example as shown in FIG. 3, the reliability of the water-blocking structure is achieved by combining the receiving portion 23 by the small diameter pipe provided in the connecting portion 22 between the large diameter pipes 21 and 21a and the insertion portion 24. In order to satisfy the requirements, the larger the diameter of the pipe constituting the receiving portion 23, the better.
Therefore, when using a pipe having a relatively large diameter as a receiving portion, the space of the connecting portion 22 is also filled with a water shielding material, so that the water shielding material is filled without a gap, resulting in a defect in water shielding, etc. It is required to process so that this problem does not occur.

  As described above, in the case of constructing a water shielding layer by filling a narrow gap with a water shielding material, there is a problem in reliability when using a conventional method of injecting and filling a bitumen mixture from above a vertical hole. I am concerned that it will occur. In other words, as a cause of the problem that requires the above solution, asphalt mixture that has been conventionally used as a general water shielding material, as described above, a method of injecting from the top of the space and dropping the water When it is used, the water falls in a narrow space while being dropped, so that it is gradually cooled while boiling water at a high temperature.

  In the middle of the fall of the water shielding material, the amorphous material mixed with water is deposited while being stacked from the bottom of the hole while being transformed into an irregular lump or small granular material. Water droplets are contained in the water layer. In other words, when filling the water-impervious material into the water from the top of the vertical hole, the cloud of the water-impervious material is deposited between the bottom of the vertical hole and the accumulation of the water from the bottom. It is presumed that the water mass is accumulated in a lump full of gaps.

  Also, while the water shielding material falls in the hole in a small granular state, water enters the water shielding material or the water adheres to the grains, and there are layers with relatively large gaps. In other words, it may be deposited at the bottom of the hole, or the water contained in the layer of the water shielding material may gradually become a large lump. In addition, it takes time for the water contained in the water-impervious layer to be pushed out of the deposited asphalt layer and eliminated to form a water-impervious layer without a gap. Become.

  As described above, an example for solving the problem in a vertical hole with a narrow cross-sectional area will be described below. As shown in the examples shown in FIG. 4 and subsequent drawings, a water shielding material is used using a container containing the water shielding material. It is also a solution to fill the glass so that there is no gap. In the example described after FIG. 4, a case where a water shielding material is filled in a relatively small cross-sectional vertical hole 30 that requires water shielding treatment at a connection portion of a sheet pile or a caisson constituting a partition revetment will be described. .

  In the embodiment described below, the vertical hole 30 serving as a target space to be filled with the water-impervious material is left as a gap when constructing the water-impervious layer. It means a hole that is estimated to cause problems. In other words, when constructing a water-impervious wall while connecting the structures of the water-impervious layer sideways, leave the space formed as a small hole with a small cross-sectional area formed in the connection part without blocking with the water-impervious material. In other words, a means for filling a water-shielding material in a fresh space that is likely to cause inconvenience sometime is described below.

  As described above, the vertical hole of the connection part of the impermeable revetment as an object to be filled with the water shielding material of the present application is a connection part of a large-diameter pipe or a sheet pile. It is intended for parts that need to be closed by filling a water shielding material with a portion where a gap may be formed in the connection part. First, as shown in FIG. 4A, the vertical hole 30 is formed as a space having an arbitrarily cross-sectional shape such as a quadrangular shape, a triangular shape, or a partial arc shape.

  The container 31 used for supplying the water shielding material to the vertical hole is cylindrical or has an arbitrary cross-sectional shape and can be of any length. A cylinder 32 having a thickness that can be inserted with a margin is used. In the following description of the present application, the container 31 for injecting the water shielding material into the gap between the connection portions of the sheet pile and the caisson will be described with an example using a member such as a cylindrical pipe for the sake of simplicity. However, the cross section of the cylinder of the container is not particularly limited, and a cross section corresponding to the cross section of the vertical hole to be filled with the water shielding material may be used.

  The said container 31 uses the pipe of arbitrary shapes, The to-be-latched member connected to the hanger 33 is provided in the upper part, and the valve member 35 which can be opened and closed is provided in the lower end part so that attachment or detachment is possible. As the valve member 35, for example, a member having a tapered shape in which the upper side has a small diameter and the lower part corresponds to the thickness of the cylinder can be used. In order to support the valve member 35, an open / close wire 36 operated by an operating portion of the suspension wire 34 is connected, and the water shielding material 38 accommodated in the cylinder 32 by opening the valve 35 is inserted into the hole from the bottom of the cylinder. Let the operation to discharge inside.

  As described above, the water shielding material is accommodated in the cylindrical container, the container 31 is inserted into the vertical hole 30 to be filled with the water shielding material, and the container is lowered to the bottom of the vertical hole 30. Then, as shown in FIG. 4B, the valve 35 is opened and the water shielding material is discharged and deposited on the bottom of the hole 30. By depositing the water shielding material upward from the bottom while gradually raising the container, water does not enter the water shielding material, and there is no problem with the reliability of the water shielding layer.

  As described above, the water shielding material that is inserted into the bottom of the vertical hole while being put in the container 31 and discharged at the bottom of the vertical hole is applied directly to the water until it is discharged at the bottom of the vertical hole. Therefore, it is possible to reduce changes in characteristics such as fluidity of the water shielding material. And since it accumulates so that it may pile up toward the top from the bottom of a hole while maintaining high temperature, water does not enter into a water shielding material.

  In addition, the water shielding material 38 accommodated in the cylinder 32 of the container 31 is transported in water and discharged to the bottom of the hole. Since the time of contact with water is very short, it is filled and deposited in the vertical hole without generating a gap from the bottom of the hole while leaving no gap in the cooled portion.

  The container 31 used for filling the water shielding material can be inserted into the vertical hole 30 for filling, and the valve member 35 provided at the bottom is opened to allow the water shielding material to flow down from the bottom of the hole. If possible, the valve member may be configured in any shape. In addition, as a means for opening and closing the valve member, it is preferable to provide a mechanism for controlling from the operation part of the work ship by appropriately combining a wire, a lever member, and the like. What is necessary is just to respond | correspond by mounting | wearing with a valve member again at the time of filling of a water material.

  As described in the embodiment of FIG. 4, when using the valve provided at the lower end of the cylinder of the container 31, it is also possible to use an on-off valve as described in FIG. The valve member shown in the example can have a simpler configuration. In the example shown in FIG. 5, instead of a block-shaped valve member such as a trapezoid, the valve member 40 is configured using a circular plate, and the container 31 to which the plate-shaped valve member 40 is attached is configured. An arbitrary number of a plurality of protrusions 41 are provided at the lower end of the tube 32 to serve as a holding portion for horizontally locking the valve member 40.

  The valve member 40 can be operated from the operation portion of the work ship by locking the open / close wire 36 near one end thereof. Since this is not performed underwater, when the valve member 40 is positioned and loaded on the bottom of the cylinder, it is simply repositioned on the locking projection, so that the valve member is attached. Can easily be done.

  When the valve member 40 is positioned at the lower end of the cylinder 32 and a water shielding material is inserted, the weight and viscosity of the water shielding material act to press the valve member 40 against the lower protrusion 41. In this state, the inner water shielding material can be held and protected in a stable state. As described above, the container 31 containing the water shielding material is inserted into the vertical hole of the connection portion of the water shielding layer and lowered to the bottom of the hole as shown in FIG. When a force that tilts the valve member 40 is applied, the valve member 40 is tilted as shown by the chain line in the figure, so that the water shielding material accommodated in the tube flows out from the lower end of the tube 32, The water barrier material can be filled from the bottom of the vertical hole.

  When using the plate-shaped valve member 40, as described in FIG. 5B, it is only necessary to provide a protrusion 41 having an arbitrary height from the inner surface of the lower end portion of the cylinder 32. The cylinder 32 can be easily processed. Further, when the valve member 40 is simply used as a plate for closing the bottom, since the water shielding material placed in the cylinder 32 acts as a weight and presses downward, an abnormal force or the like is applied. Unless it is not, the valve will not come off and the contents can be held in a stable state.

  Further, when the plate-like valve member 40 is applied with a force in the direction of pulling up one end using the operation wire 36, the balance of the valve, which is stable in a state of being locked to the plurality of protrusions, is lost. It can be easily opened. Therefore, even if the plate-like valve member 40 has a very simple configuration, the operation is sufficiently reliable.

In addition to the valve member described with reference to FIGS. 4 and 5, a valve member provided on the bottom of the cylindrical injection container can be configured as described in FIG. 6 or FIG.
In the example illustrated in FIG. 6, a valve member is configured by connecting a pair of substantially semicircular plates 43 with a central hinge shaft 44, and the vicinity of the hinge shaft 44 of one plate 43 is used as the operation wire 36. It connects and is provided in the lower end part of the pipe | tube 32 of the container 31 of a water shielding material. The wire 36 is operated by an operation unit such as a work ship so that the valve member is opened and closed.

In the example shown in FIG. 6, the pair of plates 43 provided at the lower end of the cylinder 32 can be supported by a member such as the locking projection of FIG. A method of operating the valve member with a wire may be used by supporting the shaft through a shaft provided in the cylinder so as to be swingable.
In addition, in the valve member configured by combining the two semicircular plates 43, means for moving the hinge shaft 44 at the center portion up and down along the vertical guide groove provided inside the cylinder 32 is used. The valve member may be configured to be easily opened and closed.

  In addition to the valve member of FIG. 6, a valve member 45 made of a substantially hemispherical curved plate can be used as shown in FIG. When the valve member 45 is used, by operating an operation wire 36 connected to the top of the valve member 45, the valve member can be easily opened and closed, and positioning when closing the valve member can be easily performed. It becomes.

  Instead of using a hemispherical valve member as in the example described with reference to FIG. 7, a spherical valve member may be connected to the operation wire. In this case, it may be possible to provide a hemispherical valve member that can be easily produced and has good operability.

In addition, when the valve member is configured by using a flat plate, a semicircular plate, etc. as in the above-described embodiments, the material and manufacturing cost of the valve member can be reduced, and the manufacturing can be facilitated. By appropriately selecting the material constituting the valve, the valve can be repaired or replaced easily.
Further, by making the material and structure of the cylinder of the container good, the valve member is unexpectedly opened even if it hits the surrounding structure during the work of injecting the water shielding material, It can be handled so as not to get dirty.

  In each of the above-described embodiments, the valve member that closes the bottom of the cylinder is suspended by a wire and used for reuse. In the example shown in FIG. It is made to fall and be filled with a water shielding material. That is, as shown in the figure, the valve member 46 is made as a block shape using an asphalt lump or a material having adhesiveness with an arbitrary water shielding material, and the container is formed using the suspension wire 47. It can be supported by lifting to the bottom of the tube and pressing.

  Then, when filling the cylinder 32 of the container with the water shielding material, the valve member 46 locked to the suspension wire is attached to the bottom of the cylinder 32 and closed, and then the water shielding material is filled and a vertical hole is made. It inserts in 30 from above, and is lowered to a position of a predetermined depth. Thereafter, the upper end of the suspension wire 47 is cut off, the valve member 46 is filled into the hole together with the water shielding material, and only the cylinder is collected.

  As described above, the container for constructing the water shielding material in the vertical hole is configured to have a relatively long shape and an arbitrary length in accordance with the cross-sectional shape such as the gap of the water shielding wall. be able to. As shown in FIG. 8, the valve member can be separated from the cylinder and mixed with the water-impervious material to be filled. In addition, it is desirable to use a valve member having a low manufacturing cost when it is discarded every time.

  As in each of the embodiments described above, as a container that replaces a bucket for filling a water barrier material with a narrow cross-section vertical hole, by using a long cylindrical container, a water barrier material is required for a portion that requires the water barrier material. Can be supplied without being affected by the properties of And even if it is a vertical hole of any cross-sectional shape, air or water is not mixed in the water-impervious layer filled in the vertical hole, and it can act as a high-quality impermeable layer It is.

  In the description of the present invention, as the cylindrical container for handling the water shielding material, it is possible to target a cylinder having an arbitrary cross-sectional shape, for example, a hollow cylinder, a hollow cone, a hollow barrel, a hollow prism, An arbitrary shape such as a hollow pyramid and the like that can be used by being inserted into a vertical hole at the construction site of the water shielding layer can be arbitrarily selected and used.

  In addition, the valve member that is attached to the lower end portion of the cylindrical member and can be opened and closed, or the disposable valve member that is attached every time and is left mixed with the water-impervious material in the hole is also described above. Thus, in addition to a conical shape, a spherical shape, a curved surface shape, etc., a cross-sectional shape corresponding to the inner surface shape of the cylinder can be used.

  In addition, as the water shielding material to be installed in a long container in this application, the asphalt mixture is mainly considered, but in addition, the standing water shielding wall is stable for a very long period as a water shielding layer. As long as it can be used in such a state, it is possible to use a conventionally used clayey material or any other water shielding material.

  In addition, in the cylindrical container used for injecting the water shielding material of the present invention, it is inserted into a vertical hole with a narrow cross-sectional area and is deposited from the lower part of the container toward the bottom of the vertical hole. Using a chute, the water shielding material contained in the bucket is solidified in the middle of the work in which the water shielding material is injected, as in the case of dropping the water shielding material from the top toward the bottom of the narrow vertical hole and injecting it. The inconvenience does not occur.

  And in this application, it does not inject | pour from the top in the state which makes the flow of a thin 1 streak like the case where the conventional method is used to a vertical hole with a small cross-sectional area, but a high-temperature water shielding. Since the material is discharged from the lower part of the container of the present invention and deposited from the bottom of the hole, a stable water shielding layer can be constructed.

Since the cylindrical container as described above is used, even when the volume of the vertical hole to be subjected to the water-impervious treatment is large, by using the cylindrical container having a size corresponding to the cross section, it is efficient. Processing operations can be performed.
In addition, the cylindrical container used for filling the water shielding material can be configured by using any material in addition to the metal cylinder, taking into account the water temperature in the sea area and the usability of the device. What is necessary is just to determine suitably constituent materials, such as a cylinder, and a shape.

1 partition revetment, 2, 2a impermeable wall, 3 impermeable layer, 4 permeable layer,
5 Filling layer, 6 Surface treatment layer, 7 Disposal site, 10 Steel box sheet pile, 12 Flange, 14 Joint part, 15 Outer member, 16 Inner member, 18 Joint space, 18a Water shielding layer, 19 Large space part,
19a impermeable layer, 20 steel pipe sheet pile partition revetment, 21, 21a pipe,
22 connection part, 23 receiving part, 23a slit, 24 insertion part,
25 connection part, 25A sealing part, 26, 27 receiving pipe,
28 connection plate, 29 flange, 30 vertical hole, 31 container,
32 cylinders, 33 hanger, 34 hanger wire, 35 valve member,
36 Opening and closing wire, 38 Water shielding material, 40 Valve member, 41 Projection,
43 plate, 44 hinge shaft, 45, 46 valve member, 47 suspension wire.

Claims (9)

A partition revetment for partitioning a landfill site for waste from the outside sea,
When the ready-made structures such as caissons and sheet piles are erected in a row in the partition revetment, and when water shielding treatment is performed between the erected structures,
In order to fill the space configured as a vertical hole with a small cross-sectional area that is long in the vertical direction at the connection portion of the structure, a container having a cylindrical valve member that can be opened and closed at the lower end portion, It is configured so that it can be moved down by an operation wire attached to a lifting device such as a crane of a working device,
The valve member provided in a state where it is pulled up by the operation wire at the lower end portion of the cylinder of the container is opened by loosening the operation wire, and the water shielding material accommodated in the container is discharged, thereby blocking the water shielding material. A vertical impermeable layer construction method, characterized in that it is supplied upward from the bottom of the vertical hole of the layer construction section.   A valve member that seals an opening under the cylindrical container is supported by an operation wire disposed inside or outside the cylinder of the container, and operates the operation wire from an operation unit of a working device, 2. The vertical impermeable layer construction method according to claim 1, wherein the valve member is opened and closed. The cylindrical container has an outer diameter that can be inserted with a margin with respect to the inner cross section of the vertical hole of the connecting portion of the structure to be filled with the water shielding material. Configured as having
The vertical barrier according to claim 1 or 2, wherein the barrier is discharged from the bottom of the container, and the barrier is deposited from the bottom of the vertical hole to fill the space of the connecting portion. Water layer construction method. The cylindrical container has a structure that can be held so that the water shielding material does not directly contact water,
Only when the water shielding material is discharged by opening the valve at the lower end of the container, the water shielding material can be handled such as discharging the water shielding material while allowing the water shielding material to touch the water. The vertical impermeable layer construction method according to any one of claims 1 to 3.   The valve member used to close the lower end of the cylindrical container matches the tip cross-sectional shape of the container, and is inserted from the lower part of the container to close the hole or pressed by the lower end surface of the container. It is comprised as a member which performs the effect | action which plugs up a hole, The water-shielding material is discharged from the hole opened to the lower end of the said container by moving the said valve member, The Claim 1 thru | or 4 characterized by the above-mentioned. Vertical impermeable layer construction method.   The valve member provided at the lower end portion of the cylindrical container is constituted by a member that can swing through a support shaft provided at the lower end of the container, and the valve member can be opened and closed. The vertical impermeable layer construction method according to any one of 1 to 4.   The valve member provided at the lower end portion of the cylindrical container is constituted by a circular plate of an arbitrary thickness, and is supported in a state of being placed on a plurality of protrusions provided on the inner surface of the lower end portion of the cylindrical container, The operation is performed by an operation wire connected to one end of the disk, and the water shielding material accommodated in the cylinder is discharged. Next, when the water shielding material is filled, the disk-shaped The vertical impermeable layer construction method according to any one of claims 1 to 4, wherein the valve is configured to be closed by an operator.   The valve member provided at the lower end portion of the cylindrical container is formed of a hemispherical or spherical member, and the lower surface portion is pressed in a state where the arcuate upper surface of the valve member is pressed against the lower end portion of the cylindrical container. 5. The vertical water shielding layer construction according to claim 1, wherein the opening of the lower end of the cylinder is opened and closed in a state in which the valve member is lifted or loosened by an operation wire. Construction method.   In the case of using a valve member provided in the lower end portion of the cylindrical container to be inserted and sealed from the lower end portion of the container, the valve member is a cross section corresponding to the cross-sectional shape of the lower end portion of the container, The opening at the lower end of the cylinder is opened by using a taper that is gradually reduced in diameter and opening the valve member with an operation wire or by separating it from the container and dropping it. 4. A vertical impermeable layer construction method according to any one of 4 above.

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