JP3462761B2 - Water barrier function management system for final waste disposal sites - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water shielding function management system for a final waste disposal site, and more particularly, it reliably detects a damaged portion of a water shielding sheet laid in a storage facility at a final disposal site for general waste. At the same time, it relates to a water-blocking function management system for the final disposal site of waste, which enables reliable repair of damaged parts.

[0002]

2. Description of the Related Art In a storage facility at a final disposal site for general waste, a seepage control work is carried out in order to prevent leakage of leachate from the accumulated waste to the underground ground. As a water shield work, generally, a method of laying various water shield sheets over the ground is used. A relatively flexible sheet such as a high-density polyethylene sheet is used as the water-blocking sheet. For this reason, if the waste contains sharp objects, the water blocking sheet may be damaged. Therefore, in recent construction of the final disposal site, the impermeable function monitoring that enables early detection of the presence or absence of leakage of waste leachate due to such damage of the impermeable sheet and the damaged part is adopted. .

FIGS. 15 and 16 are schematic explanatory views showing a typical example of a conventional water-blocking function monitoring system for a storage facility at a final disposal site. The water-blocking function monitoring system shown in FIG. 15 is an electrical measurement system using the electric insulation of the water-blocking sheet 51 laid on the ground 50 dug and shaped into a predetermined shape. Water-impermeable sheet 5
Since a synthetic resin sheet is used for 1, the linear electrodes 52A are preliminarily spaced at predetermined intervals in a certain direction on the ground.
Water permeable sheet 5 by laying a plurality of
1 is laid, and the linear electrodes 5 are further provided on the upper surface of the water-blocking sheet 51.
Similarly, a plurality of linear electrodes 52 are arranged in a direction orthogonal to 2A.
Wire B. In this way, the mesh-shaped measurement points 53 having a large number of intersections with the water-permeable sheet 51 sandwiched between them are set, and the linear electrodes 52A, 52 are switched by the selector 54 on the ground.
A low-voltage measurement voltage is applied to B, and the voltage change is continuously measured. For example, when a part of the sheet 51 is damaged, an abnormality such as a change in current is detected at a nearby measurement point 53. Since the measurement point 53 closest to the damaged part can be specified in this manner, the damaged part can be specified with relatively high accuracy.
When repairing the damaged part of the sheet, the vicinity of the damaged part is drilled from the ground by boring or the like, and the repair material is injected into the damaged part and its periphery by using the boring hole or the like.
Further, when the damage is extensive, a method of digging up and exposing the periphery of the damaged part to repair it is adopted.

On the other hand, the water-blocking function monitoring system shown in FIG. 16 shows an outline of a physical measuring system.
In this physical measurement system, as shown schematically in FIG. 16 (b), in a storage area in which two water shield sheets 61A and 61B are processed into a bag shape and the water shield sheet 61 is subdivided into a large number of blocks. It is designed to be laid. Based on the water leakage confirmed from the drainage port 65 of the management hose 64 of each block, the block having the sheet damaged portion as shown in FIG. 16A is specified. As an application example of this system, the inside of the bag-shaped double waterproof sheet 61 is evacuated by using the management hose 64, and the sheet breakage in each block 63 is detected by the change of the vacuum state, and the sheet breakage is accurately detected. Some have done so. Note that in FIG. 16A, the management hose 64 is shown only in a half range for simplification of the drawing. With this physical measurement system, when repairing,
A method of filling a bag-shaped sheet with a repair material by using a management hose 64 connected to a damaged portion of the sheet and closing the bag is adopted. According to this repair method, repair work can be performed without excavation from the ground.

[0005]

By the way, it is known that the above-mentioned water-blocking function monitoring system has the following problems. (1) Electrical measurement system ・ The equipment cost of the measuring device to be installed is high, and the cost for maintenance work to cope with corrosion, disconnection, etc. of the linear electrode with a long total length also occurs. In addition, when it is not possible to deal with disconnection or the like, the measurement range is limited.・ The electrical characteristics of the ground, water-blocking sheet, etc. to be measured are different, and the characteristics may change over time, resulting in a lack of system stability.・ Repair results cannot be confirmed by repairs such as boring. Repair by excavation will be large-scale and repair cost will be high. (2) Physical measurement system-Since control hoses are laid in each block, many hoses are bundled near the discharge port, and hose handling is troublesome. Is complicated.・ The damaged part of the sheet can be specified only for each block,
Only the repair that fills repair material etc. can be done to the whole block where damage is confirmed. Therefore, the same block cannot be detected thereafter.・ Because the damaged part itself cannot be identified, the repair status cannot be confirmed.

Therefore, an object of the present invention is to solve the problems of the above-mentioned conventional techniques, and to directly confirm the damaged portion of the water-blocking sheet and its condition and repair state by an economical structure and device. The purpose of this is to provide a water impervious function management system for the final landfill of waste.

[0007]

Means for Solving the Problems In order to achieve the above object, the present invention provides a lower layer sheet laid on a ground surface with a predetermined drainage gradient, and a plurality of lower layer sheets in consideration of the drainage gradient. The rows are arranged vertically and horizontally, and the upper and lower surfaces are inside
Pillars are installed to secure a space high enough for the detection carriage to travel.
By providing a double floor composed of an intermediate floor block of a frame structure separated by a material and an upper layer sheet laid so as to cover the entire upper surface of the intermediate floor block, the double layer due to damage of the lower layer or the upper layer sheet Leaked water consisting of waste leachate or groundwater that has infiltrated into the floor is allowed to flow down to the outlet along the drainage gradient in the space defined by the intermediate floor block and through the main passage to the outlet. If the leaked water is confirmed, the imaging device and water quality inspection
A trolley equipped with a knit is shown on the trace of the leaked water.
Check the image or water quality while checking the trunk from the outlet.
Run along the road and space to the point where the seat is damaged.
The feature is that the sheet damage position is specified.

[0008]

[0009] It is preferable that the drainage gradient has a laying gradient of the intermediate floor block so that the leaked water flows down substantially orthogonally to the trunk passage.

[0010]

[0011]

[0012] It is preferable that the repair cart is run to the seat breakage position, the seat breakage spot is repaired from within the space, and then the state after repair is confirmed by the detection carriage.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a water blocking function management system for a final waste disposal site of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall perspective view showing a schematic configuration of a water blocking function management system of a final waste disposal site of the present invention. The water-blocking function management system of the present invention is a double-floor structure 10 having upper and lower sheets constructed on the entire flat area of a storage facility, and upper and lower sheets 11, 12 of the double-floor structure 10.
In order to detect the detection trunk installed on the lower layer sheet 11 so as to be sandwiched between the upper trunk sheet 11 and the upper trunk sheet 11 of the double-floor structure 10, the inside of the detection trunk 20 and a predetermined height are secured. Detecting cart 3 capable of self-propelled inside the double floor structure 10
It is composed of 0 and 0.

The structure of the double floor structure 10 will be described. The double-floor structure 10 is a ground surface 1 that is leveled with a drainage gradient in a predetermined direction over the entire site of the storage facility.
Lower layer sheet 11 laid on the upper layer and this lower layer sheet 11
Along the detection trunk road 20 installed almost in the center above, it is lined up vertically and horizontally in the direction parallel to and perpendicular to the detection trunk road 20,
The intermediate floor block 40 has a column member 41 for securing a space of a predetermined height inside, and the upper layer sheet 12 laid over the entire surface of the intermediate floor block 40.

In the storage facility of the double floor structure 10 thus constructed, the discarded waste G is deposited on the upper layer sheet 12 to a predetermined height and finally covered, as shown in FIG. The entire surface is covered with soil (not shown).

Construction of the double floor structure 10 of the storage structure of the present invention shown in FIG. 1 and the intermediate floor block 4 used for the construction.
The configuration of 0 will be described with reference to FIGS. As shown in FIG. 1, the double-floor structure 10 is composed of a lower sheet 11, an upper sheet 12, and a laminated structure in which an intermediate floor block 40 is sandwiched between the sheets, and the intermediate floor block 40 and the detection trunk 20 are installed. As a result, a space 45 in which the detection cart 30 can travel (hereinafter referred to as a double-floor space 45) is secured between the upper layer seat 12 and the lower layer seat 11.

FIG. 2 is an overall perspective view showing the laid state of the lower layer sheet 11. As shown in the figure, the ground on which the lower layer sheet 11 is laid is shaped to have a drainage gradient shown by an arrow in the figure, and the lower layer sheet 11 is laid over the entire surface. In this embodiment, the lower layer sheet 1
1 uses a high-density polyethylene sheet as a water-blocking sheet. The water-blocking sheet is rolled into a predetermined width, carried into the site, and laid while being joined along a joint (not shown) in consideration of the drainage gradient. As for the drainage gradient, a two-way gradient (downward flow in the double-floor space) facing each other so as to become lower toward the position where the detection trunk 20 is laid, and the detection trunk 2
A slope of 0 (downstream of the detected trunk road) is set, and the ground surface 1 is leveled in a state in which these slopes are formed in a complex manner. As the material of the water blocking sheet, a synthetic rubber sheet or other various polymer material sheets can be used.

Further, a detection trunk 20 is installed substantially above the center of the lower layer sheet 11 along the upstream and downstream directions (FIG. 3).
reference). In this embodiment, a tubular frame having a rectangular cross section with a side of about 50 cm is adopted as the detection trunk 20. This detection trunk 20 has a bottom surface 21 as shown in FIG.
And a top surface 22, a continuous frame structure is formed, and both side surfaces 23 in the longitudinal direction are open surfaces except that support columns 24 are arranged at predetermined intervals. The upstream end face 25 of the detection trunk 20 is closed, and the downstream end face is the leaked water discharge port 26.
Has become.

Intermediate floor blocks 40 as shown in FIG. 3 are vertically and horizontally aligned along the both sides of the detection trunk 20 in the upstream and downstream directions of the detection trunk 20 and in the parallel and orthogonal directions. . In the present embodiment, the intermediate floor block 40 has a square shape with one side of 3.0 m in plan view, and has a thickness of about 50 cm. FIG. 6 shows a detailed view of the intermediate floor block 40. As shown in the figure, in this embodiment, the mesh panels 41 are integrally formed on the upper and lower surfaces. This mesh panel is made of synthetic rubber with a predetermined bending rigidity,
When supporting the water-impervious sheet, the shape is such that concentrated stress does not act on the water-impermeable sheet, so that the sheet will not break when waste is dumped. Further, intermediate columns 42 for preventing the flexural deformation of the intermediate portion of the mesh panel 41 are provided upright at predetermined intervals. In this embodiment,
The intermediate columns 42 are arranged at 50 cm intervals. When the intermediate floor block 40 is manufactured by integral molding, a synthetic rubber member, a synthetic resin member or the like having durability and chemical resistance can be appropriately used as a material. It is preferable that the member cross section at this time is set so as to ensure a cross section capable of bearing the top load acting on the intermediate floor block 40. Also,
The overall length and sectional size of the detection trunk 20 can be appropriately set according to the scale of the target storage facility or the like. Further, the plane size of the intermediate floor block 40 and the height of the pillar which is the height of the double floor space are not limited to the above size, and can be appropriately set according to the scale, drainage gradient and the like.

By the way, as shown in FIG. 4, the height of the upper sheet 1 is secured by the intermediate floor block 40 and laid.
In the double-floor space 45 divided into 2 and the lower layer sheet 11, when a part of either the upper layer sheet 12 or the lower layer sheet 11 is damaged, waste leachate or groundwater ( Hereinafter, it will be referred to as leaked water S). It is necessary that the leaked water S flows down in the space partitioned by the intermediate floor blocks 40 forming one row in the upstream and downstream directions so that the leaked water S flows down to the detection trunk 20 along the drainage gradient toward the detection trunk 20. Is. Therefore, 2 of the intermediate floor blocks 40 adjacent to the intermediate floor block 40 where the seat is damaged
In order to prevent the leaked water S from entering the floor space 45, closed surfaces as shown in FIG. 6 are provided on the two opposite side surfaces.

As described above, when the intermediate floor block 40 is laid vertically and horizontally along the detection trunk 20 as shown in FIG. 4, the closed surface 43 of the intermediate floor block 40 is arranged in the upstream and downstream directions of the drainage gradient of the leaked water S. By arranging the partition plates continuously, the flow path of the leaked water S can be reliably defined. 1 and 3 to 5, the mesh panel shown in FIG. 6 is omitted for simplification of the drawings.

Next, as shown in a part of FIG.
The upper layer sheet 12 is laid on the upper surface of the intermediate floor block 40. The material and thickness of the upper layer sheet 12 may be the same as those of the lower layer sheet 11, or in consideration of the possibility of the sheet being damaged by waste, it may be made of high strength or thick.

FIG. 7 is a perspective view showing a modification of the intermediate floor block 40. As shown in the figure, in this intermediate floor block 40, a molded product 44 having a side of 1.0 m is connected through a connecting portion (not shown), and one intermediate floor block 40 (1
The side is 3.0 m). According to this modification, even if the ground surface is uneven, the ground surface is made to follow the
A floor structure can be constructed. In addition, in the portion where the dimensional adjustment of the peripheral portion is required, it is possible to connect and use it in accordance with its shape. The shape of the upper and lower surfaces is a resin-molded lattice frame shape. For this reason, there is an advantage that the opening size can be increased and the damaged portion of the sheet can be easily found. Also in the intermediate floor block 40, the closing surface 43 is formed on the target side surface.

Next, the structure of the detection carriage 30 shown in FIG. 1 and a method of searching for a sheet damaged portion by the detection carriage 30 will be described with reference to FIGS. Figure 8
(A) As shown in FIG. 9, the detection cart 30 has a structure in which a detection head 32 is attached to the head of a multi-node structure traveling body 31 having a self-propelled mechanism. In this embodiment, the multi-section structure traveling body 31 can independently steer the multi-axis wheels 33 by radio control, and can freely perform straight traveling and curved traveling. Further, the detection head 3 of the detection cart 30
A CCD camera C as an in-pipe image pickup device is built in the device 2, and the image pickup direction and the image pickup timing can be freely controlled by remote control. In addition, a headlamp is provided to illuminate the traveling direction or the imaging target. The image picked up by the CCD camera C is displayed in real time on a video monitor (not shown) at the hand of the truck operator, and the truck operator can control the traveling direction of the detection cart 30 while watching the video. In addition to the CCD camera, an endoscope using a fiberscope or the like can be adopted as the in-tube image pickup device.

Further, a water quality inspection unit 35 is mounted on the detection head 32. As shown in FIG. 8, the water quality inspection unit 35 includes an inspection probe 36 that can project from the lower surface of the detection head 32. When the water quality of the leaked water S collected on the seat surface is to be inspected, first, the inspection probe 36 is projected downward so that the leaked water S has a probe tip 36.
Contact a. Then, the water quality of the leaked water S attached to the inspection probe 36 is inspected. The result can be transmitted in real time to the output unit (not shown) of the hand-held operating device of the truck operator. As water quality inspection items, it is preferable to set inspection items according to the type of waste, such as pH measurement, electrical conductivity measurement, chloride ion concentration, and calcium content measurement. The detection head 32 has a cleaning nozzle 37.
Is equipped with the inspection probe tip 36 if necessary.
The tip 36a can be cleaned by injecting fresh water onto a. Further, instead of performing the contact inspection with the inspection probe 36, a small amount of the leaked water S may be collected in the permeable container and the inspection may be performed by the non-contact inspection device.

Next, the work of searching for a damaged sheet by the detection cart 30 will be described with reference to FIGS. 1, 9 and 10. First, as shown in FIG. 1, the detection cart 30 is made to enter from the leaked water discharge port 26 of the detection trunk 20 and flows down the floor of the detection trunk 20 through the image from the CCD camera C (see FIG. 8). Run while checking the flow traces of leaked water S. Then, as shown in FIG. 9, when it is possible to confirm a location where the sheet is damaged and flows into the detection trunk 20 from the double floor space 45 side, as shown in FIG. 10, the carriage head (detection head 32).
Is steered to advance the entire detection carriage 30 into the double floor space 45. Further, it travels in the double-floor space 45 and searches for the location where the leaked water S flowing down is generated. When the inside of the double-floor space 45 is wet and the flow of the leaked water S cannot be clearly observed, the sheet is damaged while using the above-mentioned water quality inspection together or checking the presence of the leaked water S only by the water quality inspection. It is preferable to drive the detection cart 30 to the location. In addition,
Wireless is suitable for the operation method of the detection cart 30, but a wired method may be used in consideration of battery capacity and the like.

A work flow of the present invention which operates as a water blocking function management system of a final waste disposal site based on the configuration described above will be described with reference to FIG. In addition,
Refer to FIG. 1, FIG. 8 and FIG. 9 for the work status in each process. First, the presence or absence of drainage from the leaked water discharge port 26 provided in a part of the waste storage facility having the structure shown in FIG. 1 is regularly checked (step 100). It may be visually observed, or a detection sensor may be provided so that the generation of discharged water can be known. Next, the quality of the wastewater is inspected to determine whether it is groundwater or leachate from waste (step 11).
0). In the case of groundwater, it can be judged that the groundwater staying on the lower surface of the lower layer sheet 11 has invaded into the double floor space 45 due to the damage of the lower layer sheet 11, and in the case of leachate, a part of the upper layer sheet 12 is damaged. However, it can be determined that the leachate from the waste G has entered the double floor space 45.

In any case, the detection carriage 30 is inserted into the detection trunk 20 through the leaked water discharge port 26, and the inside of the detection trunk 20 is searched by the radio control by radio control. At this time, the CCD mounted on the detection head 32 of the detection carriage 30
An image of the inside of the detection trunk 20 (inside the pipe) is imaged by the camera C, and the flow trace of the leaked water and the condition inside the pipe are observed (FIGS. 8 and 9). At this time, the inside of the pipe may have high humidity, and dew condensation may occur or mist may be present, so that the floor condition may not be clearly confirmed. In this way, it is determined whether or not the image can be observed, and the leaked water generation point (sheet damage point) is searched by the image of the CCD camera C, or the water quality inspection unit 35 mounted on the detection head 32 is used to measure the water quality. It is determined whether or not to carry out an inspection (step 120).

If the image can be searched, the leaking water S on the floor is traced upstream of the detection cart 30 while observing the image (step 130). Further, the detection carriage 3 is placed in the double-floor space 45 where the seat is damaged.
By advancing 0, the leaked water occurrence point (sheet damage point) on the upper and lower sheets in the double space is specified. If the image cannot be searched, the damaged part is searched by water quality inspection and the damaged part of the sheet is specified (step 14).
0). When the sheet breakage point can be identified, observe the damage situation with a video and examine the repair method (Step 1
50, 160). If the damage to the seat is slight and it is determined that the repair can be performed from the inside of the pipe, a repair cart is inserted to perform the repair from inside the pipe (step 170). The repair carriage is a work carriage that is equipped with a repair material spraying device in place of the detection head 32 of the detection carriage 30. As with the detection carriage 30, a repair location in the double-floor space 45 (seat damaged location) by self-propelled or wired operation. ) Can be reached. As the repair material spraying device, a set of repair material tank, compressor and repair material spray nozzle may be mounted, or only the repair material spray nozzle is provided, and the repair material is the leakage water discharge port 26.
May be supplied from a supply hose. As a spray repair material, in addition to a cement material such as early-strength mortar, a resin adhesive that is compatible with the sheet material, and a resin of the same material as the sheet are preferably melted by heating with a pot heater or the like and sprayed.

On the other hand, when the damaged portion of the sheet is large and it is judged that the repair from the inside of the pipe is difficult, a repair material injection route is provided to the damaged portion of the sheet by boring from the surface,
A wide range of repair material is injected from the ground surface. Alternatively, a deep foundation having a predetermined diameter is excavated to the seat surface to expose the seat for repair and replacement (step 180).

Further, when the repair is completed, the detection cart 30 is inserted again from the detection trunk 20 and the repaired state of the repaired portion is confirmed from inside the pipe (step 190). With the above work flow, a series of inspections and repairs of the water blocking sheet of the storage facility can be reliably carried out.

Next, the location of the damaged sheet is specified as 3m x 3m.
FIG. 12 about another embodiment that is performed with the accuracy of FIG.
~ It demonstrates with reference to FIG. FIG. 12A is a schematic perspective view showing the outer appearance of the water permeable bottom plate block 46. This permeable bottom plate block 46 is the above-mentioned intermediate floor block 4
It is made of a low-density expanded polystyrene resin molding material whose outer dimensions are almost equal to 0. This low-density expanded polystyrene resin has high water permeability because it is molded in a state in which a large number of voids exist between the polystyrene resins. Further, as shown in FIG. 12 (a), a semicircular concave portion 46 a capable of accommodating a branch pipe 47 described later is formed on the side surface of the water permeable bottom plate block 46, and the side surface orthogonal to the side surface is The closing surface 43 is finished. Further, as shown in FIG. 12B, the adhesive tape 4 is formed along the periphery of the bottom surface 46b.
8 are provided. When the bottom slab block 46 is laid on the lower layer sheet 11, the adhesive tape 48 is brought into close contact with the lower layer sheet 11. As a result, it is possible to prevent the leaked water that has permeated through the bottom block from flowing into the adjacent bottom block.

Finally, the water-permeable bottom plate block 46, as shown in FIG. 13, is a detection trunk 20 having a circular cross section, and a branch connected to the detection trunk 20 so as to be orthogonal to each other at a predetermined interval. The pipes are laid vertically and horizontally so as to be spread between the pipes, and the upper layer sheet 12 is further laid thereon. At this time, a perforated vinyl chloride resin pipe or the like is used for the branch pipe 47. In the double sheet having such a structure, when a part of the upper layer sheet 12 or the lower layer sheet 11 is damaged and ground water or leaked water due to waste leachate occurs in the double sheet, the water in the permeable bottom plate block 46 is generated. It permeates and is discharged from the leaked water discharge port 26 through the branch pipe 47 and the detection trunk line 20. When this leaked water is confirmed, the above-described detection cart 30 searches for a sheet damaged portion that identifies the bottom slab block 46 from which the leaked water has flowed out. In this case, even if the permeable bottom plate block 46 in which the leaked water has occurred is identified, it is not possible to identify the sheet breakage portion,
As for repair, repair by boring from above ground or by deep foundation method is performed.

FIG. 14 is a perspective view showing a modified example of the water permeable bottom plate block 46. As shown in FIG. 14A, a quarter-cylindrical notch 49 is formed on one side surface of the water permeable bottom plate block. The bottom slab block 46 is laid out so that the quadrant cylindrical notch 49 becomes a continuous cylinder as shown in FIG. 14B, and a continuous tubular shape corresponding to the branch pipe 47 shown in FIG. A space can be formed.

If the material of the water-permeable bottom slab block has chemical resistance and withstands a load acting in a state where waste is deposited up to the design height, for example, a synthetic rubber chip laminated material is used. It is possible to use a laminated material of plate materials in which long fiber resins are randomly assembled and solidified.

[0036]

As described above, according to the present invention,
It is possible to construct an economical storage facility having a water-blocking function control, and it is possible to easily identify the damaged portion of the seat in the storage facility by the detection cart and reliably perform the repair.

[Brief description of drawings]

FIG. 1 is an overall partial cross-sectional perspective view showing a storage facility of an embodiment of a water blocking function management system for a final waste disposal site according to the present invention.

FIG. 2 is a state explanatory perspective view (part 1) showing a construction state of the storage facility shown in FIG.

FIG. 3 is a state explanatory perspective view (part 2) showing a construction state of the storage facility shown in FIG. 1.

4 is a state explanatory perspective view (part 3) showing a construction state of the storage facility shown in FIG. 1. FIG.

5 is a state explanatory perspective view (part 4) showing a construction state of the storage facility shown in FIG. 1. FIG.

FIG. 6 is a perspective view showing an embodiment of an intermediate floor block.

FIG. 7 is a perspective view showing a modified example of the intermediate floor block.

FIG. 8 is a side view showing a configuration of an embodiment of a detection cart.

9 is a traveling state of the detection cart shown in FIG. 8 (straight traveling)
FIG.

10 is a state explanatory view showing a traveling state (curve traveling) of the detection cart shown in FIG.

FIG. 11 is a flowchart showing a work flow by the water-blocking function management system.

FIG. 12 is a perspective view showing an embodiment of a water-permeable bottom plate block.

FIG. 13 is a state explanatory perspective view showing a laid state of the water permeable bottom plate block shown in FIG. 12;

FIG. 14 is a perspective view showing a modified example of the water permeable bottom plate block.

FIG. 15 is a partial cross-sectional perspective view showing an example (electrical measurement system) of a conventional water-blocking function management system for a final waste disposal site.

FIG. 16 is a partial cross-sectional perspective view showing an example (physical measurement system) of a conventional water-blocking function management system for a final waste disposal site.

[Explanation of symbols]

10 double floor structure 11 Lower layer sheet 12 Upper layer sheet 20 detection trunk 26 Leakage water outlet 30 detection cart 32 detection head 40 Intermediate floor block 43 Blocking surface 45 Double floor space 46 Water-permeable bottom block 47 Branch pipe C CCD camera G waste S leaked water

Claims (3)

(57) [Claims] 1. A lower layer sheet laid on a ground surface with a predetermined drainage gradient, and a plurality of rows are arranged vertically and horizontally on the lower layer sheet in consideration of the drainage gradient, and upper and lower surfaces are inside.
Pillars to secure a space with a height where the detection carriage can travel
By providing a double floor composed of an intermediate floor block having a frame structure and an upper layer sheet laid so as to cover the entire upper surface of the intermediate floor block, the double floor due to damage to the lower layer or the upper layer sheet. Leaked water consisting of waste leachate or groundwater infiltrated into the space defined by the intermediate floor block along the drainage gradient and through the trunk to the outlet, and from this outlet, If leaked water is confirmed, the imaging device and water quality inspection unit
Image of the flow of the leaked water on a detection cart equipped with
While checking or checking the water quality, from the outlet to the trunk
And run to the place where the seat is damaged, following the space,
A water-blocking function management system for the final disposal site of waste, characterized in that the location of sheet damage is specified. 2. The drainage gradient has a laying gradient of the intermediate floor block so that the leaked water flows down to the trunk passage substantially orthogonally. Management system for water-blocking function at the final landfill site of waste. 3. A repair cart is made to travel to the seat breakage position, a seat breakage spot is repaired from inside the space, and then the state after repair is confirmed by the detection carriage. Water-blocking function management system for waste final disposal site described in 1.