JP2009022814A - Method for constructing confining revetment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct an intermediate revetment between a newly constructed revetment structure and an existing revetment structure before constructing a means for compensating water sealing performance between the intermediate revetment structure and the newly-constructed and existing revetment structures when a waste disposal landfill area currently used is extended to construct a new waste disposal landfill area. <P>SOLUTION: In order to partition off a sea area by erecting revetments for depositing waste in the partition, water-sealing layers 14 and 16 are formed between an intermediate revetment 13 disposed on the end portion of the existing revetment and the new and existing revetments. To grasp the states of the water-sealing layers 14 and 16, each of them is provided with pipes 21 and 21a as monitoring means. The occurrence of abnormalities in the water-sealing layer 14 or 16 is detected from information on e.g., the level of the water-sealing material in the pipe, and the water-sealing layer is immediately replenished with a water-sealing material through the pipe to restore its function as a water-sealing layer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a method of separating a waste deposit site in a coastal part or a bay, and partitioning a sea area having a predetermined area by constructing a partition revetment, and in particular, between partition revetments that are configured long, between revetment structures. The present invention relates to a construction method that is configured so as to sandwich a water shielding means and that can maintain water shielding at each connection portion of a revetment of an arbitrary length.

  In general, waste such as rubble and earth and sand that are discharged from civil engineering construction sites, etc., non-burnable garbage that is discharged from ordinary households and business establishments, etc., divide part of the mountainous area and coastal area, A waste disposal site having a predetermined area is sectioned and waste is disposed of in landfills. For example, in order to divide a part of the sea and divide the disposal site, a caisson or stone masonry revetment is built to divide the disposal site, and both the revetment itself and the foundation seabed ground It is constructed by performing a process that prevents water from passing through. It is also in order to prevent the contaminated water from being contaminated by touching the waste accumulated inside the disposal site and causing the water containing the contaminants to flow out of the compartment.

In order to construct the partition revetment and partition the sediment disposal site, for example, as described in Japanese Patent Laid-Open No. 2006-204965 (Patent Document 1), etc., caisons and the like are erected in a row. Then, it is known as a general means to construct and construct so as to surround the disposal site. In the partition revetment, treatment is performed so as to maintain water shielding between the standing caissons, and the water shielding is also applied to each of the standing caissons, the rubble foundation of the foundation, and the seabed ground. The processing to maintain is performed.
JP 2006-204965 A

  In recent years, it has become difficult to find a sea level disposal site for the waste in a new sea area, so there is an example of constructing a new disposal site following the sea area adjacent to the disposal site currently in use. It is increasing. For this purpose, the disposal site currently in use is expanded by using a method of constructing a new partition revetment in continuation with the currently used partition revetment. Therefore, when such a method is used, the wastewater treatment facility currently in use can be partially augmented, or it can be used as it is, and the friction with the environment can be reduced. The benefits are being demonstrated.

  By the way, it is relatively easy to construct a new revetment while connected to the existing partition revetment. However, depending on the conditions such as the geology of the sea area where the partition revetment is constructed, it may be predicted that a state of unreliability will occur in the water shielding performance at the part connecting the old and new revetments. In other words, when the depth of the seabed supporting the structure is different from the newly constructed partition revetment and the stratum supporting the revetment is different, the subsidence rate of the stratum supporting the old and new revetments is , The situation of different between the old and new revetments occurs. In addition, when an earthquake occurs or crustal deformation occurs, the effects of slipping, etc. appear as different values in the seabed ground and the supported structure, etc. There is a concern that problems are likely to occur in water shielding.

  As mentioned above, in addition to the old and new revetment connections, for example, when building a long partition revetment while connecting groups such as caisson with different heights at appropriate positions in sea areas with different water depths, In many cases, it is good to construct a water-impervious structure between different types of structures such as caisson, similar to the connection between the old and new revetments. Therefore, in the problem of ensuring water shielding at the connection between the two old and new revetments, even if there is a problem with water shielding in the conventional example and other known technical means, the state of the water is prevented at an early stage. Few methods are known for detecting in stages and notifying the management side that an abnormality has occurred in water shielding.

For example, even if a defect occurs in the water impermeability at the revetment and water flows into and out of the partition revetment, a large amount of dirty water flows into the open sea and the sea area around the disposal site is contaminated. It is not understood until it is known for some reason. In addition, it is not possible to know that dirty water is flowing out without regular water quality inspections, and it is known that water leakage has occurred since a major problem occurred. become.
Therefore, in the conventional waste disposal site, the basic and most important problem that a countermeasure is considered after a serious situation occurs remains unresolved.

  The present invention can detect, at the first stage of the change, that the state of the impermeable layer between structures has changed to an abnormal state on the partition revetment that defines the waste sea surface disposal site, etc. An object of the present invention is to provide a method by which a countermeasure against a change in a water shielding layer can be easily performed using a pipe as a means.

In the present invention, a partition revetment is constructed so as to surround a predetermined area of the sea area, and a water-blocking means is provided between the partition revetment groups or revetment components having different structures, and is partitioned by the partition revetment. This is related to the use of the scope as a waste disposal site.
The invention of claim 1 is provided as a water shielding means provided between components of the partition revetment, provided with a layer of a water shielding material, a layer of a water shielding material and a layer of a water shielding sheet, or Using a combination of an impermeable mat, a layer of impermeable material, and an impermeable mat,
For the water-impervious layer filled with the water-impervious material, a hollow pipe is erected at a position connecting the sea surface and the water-impervious layer,
By detecting the level of the water shielding material in the pipe, information on the state of the water shielding material in the water shielding layer is obtained.
How to build a revetment.

In the invention of claim 2, the connecting portion between the two revetment structures is provided between the structure having water permeability and the gap between the connecting portions arranged so that the side walls of each structure face each other. Build a water shielding layer filled with a water shielding material at the connection part,
A means for detecting that an abnormality has occurred in the water shielding material is provided in the water shielding layer constituted by the water shielding material.

  The invention according to claim 3 is provided between one wall formed of a water-impervious plate or the like and a surface of the structure having water permeability among the water-impervious means provided at the connection portion of the partition revetment structure. In the water-impervious layer, a sheet or a mat is positioned on the surface in contact with the wall having water permeability, and a water-impervious material layer is provided on the inner surface side. Means is provided for detecting that an abnormality has occurred in the water material.

  According to the invention of claim 4, even if the water shielding layer constructed between the two structures is between walls that do not have water permeability, the water shielding layer has a certain interval and height. It is characterized in that a pipe having an opening is provided upright in a different part of the pipe, and an operation for detecting the occurrence of an abnormality in the water shielding layer and a repair work can be handled using the pipe.

In the invention of claim 5, a plurality of pipes standing upright to detect the state of the water shielding material of the water shielding layer are provided at predetermined intervals, and the opening of the pipe is formed in the length direction of the water shielding layer. And a means for detecting that an abnormality has occurred in the water shielding material at any part of the layer of the water shielding material.
The invention according to claim 6 is a pipe arranged in the water-impervious layer in a standing manner, and for pipes that have detected an abnormality of the water-impervious material in the water-impervious layer, depending on the situation, It is possible to appropriately implement measures such as replenishing materials.

The invention according to claim 7 uses a concave groove formed in a vertical direction on a side surface of a structure instead of a pipe used for detecting information on the water shielding material in the water shielding layer, and the groove and structure It is configured as a substantially pipe-shaped member by a waterproof sheet provided on the side surface of the object, and is connected to a water shielding layer at a predetermined position below the pipe-shaped member through a hole provided in the waterproof sheet. It is characterized by.
The invention of claim 8 is characterized in that a material capable of maintaining fluidity over a long period of time is used as the water shielding material for filling the water shielding layer.

  As mentioned above, when building a partition revetment at a waste disposal site, when a failure occurs at the part connecting the old and new revetments, we will provide means to quickly obtain information and take countermeasures easily. Thus, it is possible to eliminate the occurrence of a state where the water shielding layer does not function. In addition, with respect to the connection part of the revetment structure such as caisson, the water shielding material is applied to the surface of the revetment that is constructed by stacking rubble stones, or the water shielding material has a predetermined thickness. It is possible to target an example formed as a water shielding layer.

  Furthermore, in any case where the water shielding layer of the water shielding sheet is combined so as to cover the water shielding layer constructed in a layer shape of the predetermined thickness, the water shielding material layer When an abnormality occurs, it is possible to accurately know the information, and it is possible to easily perform a process such as replenishing a water shielding material toward a defective part. Then, when the waste accumulated at the disposal site is touched and the polluted water containing harmful components of the waste does not flow into the sea, the environment is not polluted.

  When constructing a general waste sea surface disposal site, the sea area in the port is partitioned by a partition revetment, and the partitioned interior is partitioned as a waste disposal site to construct building waste, incombustible waste, or burned garbage Incineration ash etc. are used as a place to dump and dump. Then, in the disposal site where the waste is deposited, a soil layer is provided with a predetermined thickness so as to cover the surface of the accumulated waste, and a tree or grass is planted and greening is performed. It is common to use it as a park, etc. by performing processing such as performing it.

  When constructing the waste disposal site, since the weight of the structure such as the upper partition revetment is placed as in the case of constructing the harbor breakwater for the first time, In order to withstand such weight, the ground is strengthened. After constructing a rubble foundation at a predetermined height on the ground that has undergone such treatment, a structure such as caisson is erected on the foundation, and a predetermined range of the submarine ground and the foundation The entire surface between the surface and the caisson row is treated to provide a function as a water-impervious layer, and is constructed as a partition revetment that partitions the waste disposal site.

  The invention will be described according to the example shown. When the existing waste disposal site is expanded and constructed, as shown in FIG. 1, the caisson 13 is set up perpendicular to the end of the existing partition revetment 11 and then the existing revetment 11 is arranged. Is extended and a new revetment 12 is constructed. And the said new revetment 12 is constructed so that a new disposal site may be enclosed, and the waste disposal site currently in use is divided. In the revetment 13 arranged so as to be orthogonal to the existing revetment 11, and the connecting part of the revetments 12, 13, a water shielding layer is arranged between the caissons constituting the revetment so that the water shielding can be satisfactorily performed. is doing.

  Further, as shown in FIG. 1, each of the existing revetment 11, the extended revetment 12, and the revetment 13 arranged in the middle, for example, the new revetment is located toward the offshore gradually away from the coastline, that is, the water depth gradually increases. Will be built in the direction. Therefore, as shown by phantom lines in FIG. 2, the rubble foundations 5 and 5a constructed on the seabed 3 are constructed at deep positions, and the structures such as caissons constituting the respective revetments are at their heights. As described as H1 and H2, ready-made ones are short and new ones that are tall are used in combination. In addition, the intermediate revetment 13 using the caisson disposed in the middle of the old and new revetments may be of any shape, but the portions protruding on the sea are the same as the structures on both sides thereof. Configured as follows.

  As shown in FIGS. 1 and 2, when an intermediate revetment 13 is provided between the old and new revetments 11, 12, the connection between the intermediate revetment and the old and new revetments is connected as shown in FIG. Means are used. In the example shown in FIG. 3, the intermediate revetment 13 does not receive a large amount of sediment pressure, and therefore has a structure such as a concrete caisson having a relatively small thickness (narrow width) or a hybrid caisson. Can be used. Then, the end portions of the old and new revetments are abutted on both sides of the intermediate revetment structure, and the end portions of each revetment structure are two types of water-impervious means, ie, water-impervious layers 14 and 15. Are positioned so that they are sandwiched.

  As shown in FIGS. 1 to 3, when an intermediate revetment 13 is provided between the old and new revetments 11, 12, the connection as shown in FIG. 3 is made at the connection between the intermediate revetment and the old and new revetments. Means. In the example shown in FIG. 3, the newly constructed revetment 12 is a sheet so as to cover the slope of the stone layer by providing a layer of stones on the inland side where caisons are erected in a row. 19 is constructed as a water shielding layer that is laid without gaps so that water does not ooze between sheets. Furthermore, in the lower part of each structure to be erected, the bottom sheet 19a is laid so as to be continuous with the sheet on the slope portion so as to cover the seabed ground in a predetermined range, and the water shielding is also good on the ground. It is processed so that it can be demonstrated.

  In each of the above embodiments, the two revetments that are erected so as to sandwich the intermediate revetment are included in the case where the construction time is different, but in addition to the position where the water depth changes greatly, the height and It may be possible to construct a water-impervious wall by combining caisson rows with different structures. And in the connection part of said 2 types of impermeable walls, it is caisson in either of the structure on one side (land side revetment) and the revetment structure on the other side across the middle impermeable wall It is conceivable to adopt an arbitrary structure such as using an auxiliary surface for masonry on the disposal site side of the caisson.

  Between the intermediate revetment 13 and the new revetment 12, a layered water-impervious layer 14 filled with a water-impervious material with a predetermined thickness is provided to provide water-imperviousness between structures. Moreover, the caisson surface of the intermediate revetment 13 is also covered and protected by a water shielding sheet as necessary. At the connecting portion between the intermediate revetment and the new revetment 12, a pillow-shaped block is provided between the surface of the intermediate revetment 13 and the surface of the new revetment 12 through a predetermined distance from the intermediate revetment 13. In addition to fixing the end of the sheet 19 on the slope, an oblique water shielding layer 16 is provided between the intermediate revetment 13 and the new revetment 12, thereby forming a water shielding layer on the surface of the two revetments. In order to prevent a gap from occurring, a process is performed.

  The oblique water shielding layer 16 is provided with a fluid water shielding material such as asphalt mastic so as to have a predetermined thickness between the block 17 and the caisson 13, and defines the thickness thereof. For this purpose, a mold for regulating the upper surface of the oblique water shielding layer may be provided, and the mold may be regulated until the mastic to be cast is solidified. Or, after constructing the water-impervious layer, without removing the formwork, leave the upper surface of the water-impervious layer pressed with the formwork, and apply a sand layer so as to protect it by pressing from the water-impervious sheet. It can be used as a member that is disposed on top of the water-impervious layer or the water-impervious sheet and dumps and presses waste.

As shown in FIG. 3, when the water shielding treatment is performed on the connection part of two structures, the geology of the seabed ground is actually different in the middle part of the structure in the length direction, etc. It is also possible that geological effects such as the consolidation of the ground due to the weight of the waste and the revetment, and the speed at which the structure sinks will appear. In addition, it is assumed that an inconvenient situation occurs such that the structure slips due to the influence of the earthquake, and the water shielding layer 15 of the connecting portion cannot perform its role well.
The occurrence of defects in the water shielding layer means that, for example, when the distance between structures changes, the water shielding layer is consolidated at a position where the distance becomes narrow, and an extra water shielding material. Will be pushed out in the direction with room. On the other hand, in the position where the space | interval became wide, since a clearance gap is formed between the water shielding material and the wall of a structure, it will be in the state in which water shielding is impaired.

  As described above, it is considered that a means for detecting the level of the water shielding material should be used in order to obtain the information as soon as possible when a change in the gap between the structures occurs. Therefore, the state of the water shielding layer can be detected by inserting a hollow pipe into the gap between the structures and detecting the level of the water shielding material in the pipe. Then, for example, when it is determined that the condition is lower than a predetermined level, countermeasures such as injecting a water shielding material through the pipe can be taken immediately.

  For example, in the example of the water shielding layer described in FIG. 3, a plurality of pipes are sequentially inserted into the water shielding layer formed obliquely so as to have different heights. It is good to provide a means for detecting the state of the water layer. Then, a part of the water shielding layer 16 formed obliquely at the connection portion 15 detects a state in which the water shielding material flows out for some reason in the piled stone layer and a cavity is formed. In such a case, a water shielding material is immediately injected from the upper part of the pipe, and the cavity is repaired to prevent the defected portion from being further expanded. In addition, even when the water shielding material flows out from the gap between structures, if you know the information on the water shielding material using the pipe inserted in the gap, you can take countermeasures for that condition at an early stage It will be.

  The example shown in FIG. 4 explains one of the measures for obtaining information on the water shielding material and performing the replenishment work for the water shielding layer 16 provided between the structures 12 and 13. The example shown in FIG. 4 is described in correspondence with the plan view of FIG. 5, but vertical concave grooves 21 and 21 a are formed at predetermined intervals instead of pipes on the surface portion of the intermediate revetment 13. ing. Assuming that the open side of the vertical groove is covered with the water-impervious sheet 20, it is configured as a single pipe as a whole. The lower ends of the concave grooves 21 and 21a are preferably provided with openings 22 and 22a... Of an arbitrary size corresponding to an intermediate portion of the water shielding layer 16 formed obliquely. And, for some reason, when an accident occurs where the water shielding material flows out locally from the water shielding layer 16, the information on the accident can be known from the level of the water shielding material in the groove. it can. Therefore, by injecting a water shielding material into the concave groove and replenishing even the non-part where the water shielding layer is defective, it is possible to easily perform the process of restoring the function as the water shielding layer. Become.

  As described in 4 above, the means for detecting the state of the water-impervious material as needed is described with reference to FIGS. The size of the concave groove may be formed according to the properties of the water shielding material. When a water shielding material that is soft and has good fluidity, for example, asphalt mastic, is used, a relatively small hole is used. Even so, you can supply it. On the other hand, for example, when a material mainly composed of clay is used as a water shielding material having poor fluidity, the opening can be dealt with as a relatively large one.

  In the example described with reference to FIG. 5, the longitudinal groove 21 is covered with the water shielding sheet 20, and a state in which the external groove is applied to the water shielding sheet and the groove is covered is maintained. It is assumed that the sheet is deformed so as to be recessed, or that the water shielding sheet is torn. When the occurrence of such inconvenience is a concern, the auxiliary plate 24 is provided so as to cover the surface side of the concave groove, and the water shielding sheet 20 is provided on the upper surface thereof, thereby holding the auxiliary plate 24 and the concave groove. 21 can be maintained in a normal shape. Then, by providing the reinforcing means together, the state of the water shielding layer is detected using the hole 22 provided so as to penetrate the sheet and the plate 24 and the opening at the top of the groove 21. And the action of replenishing the water shielding material can be easily handled.

  As in the example shown in FIG. 5 described above, providing a groove on the side surface of a structure puts one extra step in the manufacturing process of the structure. Therefore, instead of the operation of forming the concave groove in such a structure body, as shown in FIG. 6, the auxiliary plate 24 having a substantially semicircular cross section is positioned so as to be along the side surface of the structure. The auxiliary plate and the side surface of the structure are covered with a water shielding sheet 20 so that the auxiliary plate 24 can be used in the same manner as the concave groove in FIG. As illustrated in FIG. 6, when the auxiliary plate 24 having a substantially semicircular cross section is used, a groove-shaped member having an arbitrary size can be disposed along the side surface of the structure, and the water shielding sheet And a hole provided at a predetermined position of the auxiliary plate 24 can be overlapped to form a convex groove-shaped supply hole. In such an example, the size or the like of the concave groove or the convex groove can be arbitrarily created according to the conditions such as the retaining wall, and the configuration is not particularly limited. .

  In the example shown in FIG. 7, the water shielding sheet 19 laid so as to cover the surface of the slope portion of the revetment 12 is provided with its lower end portion extended by a predetermined distance on the seabed ground, with respect to the horizontal portion. An anchor member 25B for fixing is provided. The anchor member 25 is provided with a fixing block 27 at a free side end portion of the sheet 19 and a water shielding material layer 28 formed by injecting a water shielding material between the slope portion and the water shielding sheet 25. While pressing the end, it can be used as a water shielding means for the sheet end. In the example of FIG. 6, for the oblique water shielding layer 16 provided between the two structures, the flow of the water shielding material is prevented at a predetermined position near the lower end of the oblique member. It is preferable to provide a vertical plate or the like as an auxiliary means so that the shape at the lower part of the oblique water shielding layer 16 can be maintained.

  In the example shown in FIG. 8 with respect to the anchor member 25B of FIG. 7, the upper anchor member 25A is provided also on the upper part of the water shielding sheet that covers the slope to form a water shielding layer at the slope. be able to. 6 and 7 describe the water shielding layer on the slope portion having a different configuration. However, as shown in FIG. 7, the shielding layer disposed on the long slope of the stone stack is formed. How to stop the water-blocking layer applied to the surface of the water sheet and also to the slope of the stone stack that is locally configured like the surface part of the rubble foundation as shown in FIG. It can be dealt with by configuring almost the same.

  As in the example illustrated in FIG. 8, when the water shielding layer 25 is disposed so as to cover the surface of the slope portion, the anchor 25 </ b> A that fixes and holds the water shielding layer at the upper and lower ends of the water shielding layer. 25B, a water shielding material layer 28 is provided corresponding to the height of the block 27 arranged at the free end. In order to know the state of the water shielding material layer 28..., Monitoring pipes 30... Are arranged, to obtain information on the water shielding material layer, and to supply the water shielding material. Use when. And after constructing the anchor member, when an abnormality is detected in the information of the water shielding material in the anchor member, the water shielding material is injected into the corresponding pipe, and the state of the water shielding layer Can be used to recover.

As described above, as a revetment to which the present invention is applied, when a new revetment is constructed by extending to an old revetment, a case where an intermediate structure is arranged at the connection portion is assumed. In addition, for example, even in the case of constructing a long partition revetment while connecting caisson groups with different heights at appropriate positions in sea areas with different water depths, the same type of connection is different as in the connection of the old and new revetments. As described above, it is preferable to construct a water shielding structure between structures such as caisson. And as mentioned above, it is possible to detect at the early stage that an abnormality has occurred in the water impermeability at the connection between the two old and new revetments, and an advantage that measures to ensure the water impermeability are easily applied. Can be demonstrated.
Moreover, in what was demonstrated to the said each Example, in the connection part of said 2 types of impermeable walls, a structure (land-side revetment) on one side and the other side across the intermediate impermeable wall In any of the revetment structures, it is conceivable to use a caisson or adopt an arbitrary structure such as providing an auxiliary surface for masonry on the disposal site side of the caisson.

It is explanatory drawing which shows the example of the extension of the partition revetment which divides a waste disposal site. It is a schematic sectional drawing explaining the magnitude | size of a revetment. It is explanatory drawing of the impermeable layer provided in a revetment connection part. It is explanatory drawing of the detection means using the ditch | groove provided in the wall of the structure. It is a top view of the detection hole demonstrated in FIG. It is explanatory drawing of the arrangement | positioning state of the ditch | groove member of a form different from FIG. It is explanatory drawing of the example comprised combining a some detection means. It is explanatory drawing of the impermeable layer provided in the foundation part of a seawall, and a detection means.

Explanation of symbols

2 disposal site, 3 submarine ground, 5 rubble foundation,
10 Revetment, 11-13 Revetment, 14 Middle impermeable layer,
15 water shielding layer, 16 diagonal water shielding layer, 17 stop block,
18 Horizontal impermeable layer, 19 Revetment surface impermeable layer,
20 water shielding sheet, 21 vertical hole, 22 opening,
25 water shielding layer, 25A / 25B anchor member,
26 sheet layer, 27 stop block, 28 water shielding layer,
30 pipes.

Claims (8)

Build a partition revetment so as to enclose a predetermined area in the sea area, and provide a water shielding means between the group of partition revetments or revetment components having different structures,
The range demarcated by the partition revetment is used for use as a waste disposal site,
As the water shielding means provided between the components of the partition revetment, a layer of a water shielding material, a layer of a water shielding material and a layer of a water shielding sheet, or a water shielding mat and a water shielding material. Using an arbitrary combination of layers and water-proof mats,
For the water-impervious layer filled with the water-impervious material, a hollow pipe is erected at a position connecting the sea surface and the water-impervious layer,
The construction method of the partition revetment characterized by obtaining the information of the state of the water shielding material in the said water shielding layer by detecting the level of the water shielding material in the said pipe. The connecting portion between the two revetment structures has a gap between the connecting portions arranged so that the side walls of each structure face each other, and a connecting portion between the side wall and the structure having water permeability. Build a water-impervious layer filled with
The method for constructing a partition revetment according to claim 1, wherein means for detecting that an abnormality has occurred in the water shielding material is provided in the water shielding layer constituted by the water shielding material. Among the water shielding means provided at the connection portion of the structure of the partition revetment, in the water shielding layer provided between one wall formed of a water-permeable plate or the like and the surface of the structure having water permeability,
The sheet or mat is positioned on the surface that contacts the wall having water permeability, and a layer of a water shielding material is provided on the inner surface side.
The method for constructing a partition revetment according to claim 2, wherein means for detecting that an abnormality has occurred in the water shielding material is provided for the layer of the water shielding material.   Even if the water-blocking layer constructed between the two structures is between walls that do not have water permeability, the water-blocking layer has openings at different intervals and at different heights. The construction of a partition revetment according to claim 1, wherein the pipe is provided upright, and the pipe can be used to detect an abnormality in the impermeable layer and to cope with repair work. Method. A large number of pipes are provided at predetermined intervals to detect the state of the water shielding material of the water shielding layer, and the opening of the pipe is located at a position where the height and height of the water shielding layer are different. Position
The method for constructing a partition revetment according to claim 2 or 3, further comprising means for detecting that an abnormality has occurred in the water shielding material for any part of the layer of the water shielding material. In the pipes that are arranged upright in the water barrier layer,
For pipes that have detected abnormalities in the water-blocking material in the water-blocking layer, it is possible to arbitrarily take measures such as replenishing the water-blocking material as needed depending on the situation. The construction method of the partition revetment in any one of Claim 1 thru | or 5 characterized by these. Instead of the pipe used to detect the information of the water shielding material in the water shielding layer, using a concave groove formed in the vertical direction on the side surface of the structure,
A substantially pipe-shaped member is constituted by a waterproof sheet provided on the side surface of the concave groove and the structure, and water shielding is performed at a predetermined position below the pipe-shaped member through a hole provided in the waterproof sheet. The construction method of a partition revetment according to claim 3, wherein the construction method is connected to a layer.   The construction method of a partition revetment according to any one of claims 1 to 7, wherein a material capable of maintaining fluidity over a long period of time is used as the water shielding material for filling the water shielding layer.

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