JP2020118540A - Inspection device of water-barrier sheet and inspection method of water-barrier sheet - Google Patents

Abstract

To provide an inspection device of a water-barrier sheet and an inspection method of the water-barrier sheet that can reduce work labor and improve safety while shortening work time.SOLUTION: The following are provided in a travel carrier 19 traveling on a water-barrier sheet 15: a brush electrode 21 in contact with the surface of the water-barrier sheet 15; a pad electrode 23 in contact with the water-barrier sheet 15, separated by a constant distance from the brush electrode 21; a power supply for applying voltage between the brush electrode 21 and the pad electrode 23; and a detector for detecting a hole based on a change in a current when the brush electrode 21 passes on the surface of the water-barrier sheet 15 having the hole.SELECTED DRAWING: Figure 1

Description

The present invention relates to a waterproof sheet inspection device and a waterproof sheet inspection method.

For example, an inspection performed to detect pinholes or the like is known for a water-blocking sheet used as a water-blocking structure such as a waste disposal site, a storage pond, a landscape pond, a regulating pond, and a roofing.

Patent Document 1 discloses a small pinhole detector in which the electrode probe can be replaced and can be held by one hand. In Patent Document 2, a conductive wire is embedded in the welding direction of the water-blocking sheet, one electrode of the spark tester is connected to the conductive wire, and the brush electrode of the spark tester is moved along the surface of the joint. A joint test method is disclosed. Patent Document 3 discloses a water-impermeable sheet laying structure in which a conductive sheet is separately laid under a water-impermeable sheet, and the sheets can be electrically energized with each other by using an energizing means. .. In Patent Document 4, by spraying water on a protective mat laid on the ground, laying a water blocking sheet on it, and scanning a flat brush of a high-voltage generator along the upper surface of the water blocking sheet. There is disclosed a pinhole detecting method for detecting a pinhole by applying a voltage to the surface of the water-blocking sheet and detecting the presence or absence of discharge.

Japanese Utility Model Publication No. 6-2218 Japanese Patent No. 4336504 JP-A-8-229530 JP, 10-288563, A

However, the conventional method for inspecting a water-impermeable sheet requires an operator to walk on the sheet surface and apply a brush electrode. Therefore, when the area to be inspected is a large landfill site, the work by the operator requires a lot of labor and time, and the foot is unstable on the slope, which may cause an accident such as sliding down. There was a danger to occur.

The present invention has been made in view of the above situation, and an object thereof is to perform a work of detecting perforations in a water-impervious sheet, which can reduce work effort and improve safety while shortening the work time as compared with the conventional art. To provide an inspection device and an inspection method for a water-blocking sheet.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The water impermeable sheet inspection device 11 according to claim 1 of the present invention includes a traveling device 35, and a traveling carriage 19 that travels on the water impermeable sheet 15 stretched on the covering surface 37.
A first electrode 21 provided on the traveling carriage 19 and in contact with the surface of the water-blocking sheet 15;
A second electrode 23 provided on the traveling carriage 19, arranged within a certain distance from the first electrode 21 and in contact with the water shield sheet 15;
A power supply unit 25 provided on the traveling carriage 19 for applying a voltage between the first electrode 21 and the second electrode 23;
A detector 31 provided on the traveling carriage 19 for detecting the hole by the change of the electric current when the first electrode 21 passes through the holed surface of the water blocking sheet 15.
It is characterized by including.

In the water impermeable sheet inspection device 11, the traveling device 35 operates so that the traveling carriage 19 travels on the water impermeable sheet 15. The traveling carriage 19 travels at an arbitrary position while the first electrode 21 is in contact with the surface of the water shield sheet 15. In the detector 31 provided on the traveling carriage 19, when the water-blocking sheet 15 has a hole, when passing through the surface of the water-blocking sheet 15, the current flowing through the hole to the lower layer of the water-blocking sheet 15 is detected. Detect changes. In the water impermeable sheet inspection device 11, this detection operation is repeated as the traveling carriage 19 travels. That is, the water impermeable sheet inspection device 11 can automatically perform the inspection.
As described above, in the water impermeable sheet inspection device 11, the traveling carriage 19 mounts the first electrode 21 and the second electrode 23 and travels while contacting these with the surface of the water impermeable sheet 15, so that the conventional work The labor can be significantly reduced as compared with the case where a person holds the first electrode 21 in his hand and inspects a vast area.
Further, by allowing the first electrode 21 and the second electrode 23 to be in contact with the slope 13, an operator holds the first electrode 21 of a heavy object with both hands and scans on a slope where it is difficult to secure a scaffold. Dangerous work can be avoided.
Further, as compared with the inspection in which the worker scans the first electrode 21 while walking, the inspection can be performed accurately and continuously at a constant speed, so that the working time can be shortened, and further, the inspection points for the vast area can be shortened. It is possible to prevent missing (missing inspection).

A waterproof sheet inspection device 11 according to claim 2 of the present invention is the waterproof sheet inspection device 11 according to claim 1,
It is characterized in that it is provided with either the traveling carriage 19 or the first electrode 21 and is provided with a position information acquisition unit 27 for acquiring position information.

In this water impermeable sheet inspection device 11, the water impermeable sheet 15 travels on the water impermeable sheet 15, and the contact position of the first electrode 21 is acquired in real time by the position information acquisition unit 27 provided on the traveling carriage 19 or the first electrode 21. It In the water impermeable sheet inspection device 11, this detection operation is repeated as the traveling carriage 19 travels. That is, the water impermeable sheet inspection device 11 can automatically perform acquisition and inspection of position information.

The waterproof sheet inspection device 11 according to claim 3 of the present invention is the waterproof sheet inspection device 11 according to claim 2,
An antenna 47 of the position information acquisition unit 27 is provided on the first electrode 21.

In the water impermeable sheet inspection device 11, the current position of the first electrode 21, that is, the detection position of the hole can be acquired.

The waterproof sheet inspection device 11 according to claim 4 of the present invention is the waterproof sheet inspection device 11 according to claim 2,
A storage unit 29 that is provided in the traveling vehicle 19 and stores map information that is a construction target area, the position information, and detection information by the detector 31.
A control unit 33 which is provided on the traveling carriage 19 and stores the detection information and the position information in the storage unit 29 when the detector 31 detects the hole;
It is characterized by including.

In the water impermeable sheet inspection device 11, a detection signal indicating that a hole has been detected is sent to the control unit 33. Upon receiving the detection signal, the control unit 33 causes the position information acquisition unit 27 to store the current position of the first electrode 21 in the storage unit 29.
In the water impermeable sheet inspection device 11, the detection operation and the storage are repeated as the traveling vehicle 19 travels. That is, the water impermeable sheet inspection device 11 can automatically perform acquisition, inspection, and recording of position information.

A waterproof sheet inspection device 11 according to claim 5 of the present invention is the waterproof sheet inspection device 11 according to claim 4,
The traveling carriage 19 has a transmission/reception device 83 connected to the control unit 33,
A control device 81 is provided, which is wirelessly connected to the transmission/reception device 83 to control the traveling of the traveling carriage 19 by operating the traveling device 35.

In the water impermeable sheet inspection device 11, a transmission/reception device 83 is mounted on the traveling carriage 19. The transmission/reception device 83 enables the traveling device 35 via the control unit 33 or directly. On the other hand, the waterproof sheet inspection device 11 includes a control device 81 that is separate from the traveling carriage 19. The control device 81 operates the traveling device 35 by wirelessly communicating with the transmission/reception device 83. That is, the traveling carriage 19 can be controlled for traveling by remote control using the control device 81, as in the case where the operation panel 85 attached to the carriage body is operated. The traveling control includes, for example, starting/stopping, retreating, turning right, turning left, driving the first electrode advancing/retreating drive unit 45, and the like.

A waterproof sheet inspection device 11 according to claim 6 of the present invention is the waterproof sheet inspection device 11 according to claim 5,
A portable information processing terminal 87 having a display device 89, which is wirelessly connected to the control unit 33 via the transmission/reception device 83,
The portable information processing terminal 87 is characterized in that the detection information and the position information are superimposed on the map information and can be displayed on the display device 89.

In the water impermeable sheet inspection device 11, a portable information processing terminal 87 including a display device 89 is wirelessly connected to the transmission/reception device 83 of the traveling vehicle 19. The portable information processing terminal 87 is connected to the control unit 33 via the transmission/reception device 83. The portable information processing terminal 87 connected to the control unit 33 reads detection information and position information from the storage unit 29 to the control unit 33 by operating an operation button or the like displayed on a part of the display device 89, for example. Let The portable information processing terminal 87 wirelessly acquires the read detection information and position information, and superimposes the detection information and the position information on the map information and displays it on the display device 89.

The waterproof sheet inspection device 11 according to claim 7 of the present invention is the waterproof sheet inspection device 11 according to any one of claims 1 to 6,
The traveling carriage 19 is provided with a first electrode advancing/retreating drive unit 45 that moves the first electrode 21 toward and away from the traveling carriage 19 in a direction substantially orthogonal to the traveling direction.

In the water impermeable sheet inspection device 11, the traveling carriage 19 includes a first electrode advancing/retreating drive unit 45. The first electrode advancing/retreating drive unit 45 moves the first electrode 21 toward and away from the traveling carriage 19 in a direction substantially orthogonal to the traveling direction of the traveling carriage 19. Accordingly, the water impermeable sheet inspection device 11 can stop the traveling and perform the inspection by moving the first electrode 21 toward and away from the position in the direction orthogonal to the traveling direction. That is, the water impermeable sheet inspection device 11 can perform efficient inspection by scanning the surface of the water impermeable sheet 15 in the XY directions by the traveling carriage 19 and the approaching/separating operation of the first electrode 21. ..

An inspection apparatus 11 for a waterproof sheet according to claim 8 of the present invention is the inspection apparatus 11 for a waterproof sheet according to claim 7,
The first electrode advancing/retreating drive unit 45 has a winding device 51 that reels out or winds up the rope 49,
When the traveling carriage 19 travels on the flat surface 53 along the slope 13 descending from the flat surface 53, while stopping the traveling at a predetermined position,
The sloped surface while sliding the first electrode 21 and the second electrode 23 supported by the ends of the rope 49 by the unwinding or winding of the rope 49 of the winding device 51 to the surface of the impermeable sheet 15 by its own weight. It is characterized in that 13 is raised and lowered.

In the water impermeable sheet inspection device 11, the first electrode advancing/retreating drive unit 45 includes a winding device 51. The winding device 51 enables the rope 49 to be paid out or wound up. The first electrode 21 and the second electrode 23 are attached to the ends of the rope 49 with a predetermined distance therebetween.
The first electrode 21 and the second electrode 23 attached to the ends of these ropes 49 are introduced from the side of the traveling carriage 19 toward the slope 13. When the rope 49 is paid out from the winding device 51, the first electrode 21 and the second electrode 23 thrown into the upper part of the slope 13 start to descend while slidingly contacting the surface of the water-impervious sheet 15 by its own weight. During this descent, the water blocking sheet 15 on the surface of the slope 13 through which the first electrode 21 passes is inspected.
When the first electrode 21 reaches the lower end of the slope 13, the winding device 51 stops the feeding of the rope 49, and then winds the rope 49.
When the winding of the first electrode 21 and the second electrode 23 is completed, the traveling carriage 19 advances the traveling carriage 19 by the distance of the inspection end region. After that, the inspection device 11 for the water-blocking sheet starts to input the next first electrode 21 and the second electrode 23, and thereafter, the same feeding and winding operations as described above are repeated to inspect all the slopes 13. finish.

A waterproof sheet inspection device 11 according to claim 9 of the present invention is the waterproof sheet inspection device 11 according to any one of claims 1 to 8,
The first electrode is a brush electrode.

In this water impermeable sheet inspection device 11, the first electrode is configured as a brush electrode in which a metal brush is planted on the lower surface of the brush handle portion formed in the shape of a long rod, for example. According to the brush electrode 21, the brush bristles are in sliding contact with the surface of the water-impervious sheet 15 and a voltage is applied.

The waterproof sheet inspection device 11 according to claim 10 of the present invention is the waterproof sheet inspection device 11 according to any one of claims 1 to 9,
The second electrode is a pad electrode.

In the water impermeable sheet inspection device 11, the second electrode is configured as a pad electrode formed in, for example, a disc shape or a rectangular plate shape. The pad electrode 23 is arranged in close contact with the surface of the water-blocking sheet 15 or the like on that surface.

In the method for inspecting a water blocking sheet according to claim 11 of the present invention, a traveling carriage 19 having a traveling device 35 is run on the water blocking sheet 15 stretched on a covering surface 37,
The first electrode 21 provided on the traveling carriage 19 is brought into sliding contact with the surface of the water blocking sheet 15, and the second electrode 23 provided on the traveling carriage 19 is within a certain distance from the first electrode 21. To contact the water-blocking sheet 15,
A voltage is applied between the first electrode 21 and the second electrode 23 by the power supply unit 25 provided in the traveling carriage 19,
It is characterized in that the hole is detected by a detector 31 provided in the traveling carriage 19 by a change in current when the first electrode 21 passes through the holed surface of the water blocking sheet 15. ..

In this water-impermeable sheet inspection method, the traveling carriage 19 is equipped with the first electrode 21 and the second electrode 23, and these are mounted on the surface of the water-impermeable sheet 15, similarly to the operation of the water-impermeable sheet inspection apparatus 11 described above. Since the vehicle travels while being in contact with, it is possible to greatly reduce the labor compared to the case where an operator conventionally holds the first electrode 21 and inspects a large area.
Further, by allowing the first electrode 21 and the second electrode 23 to be in contact with the slope 13, an operator holds the first electrode 21 of a heavy object with both hands and scans on a slope where it is difficult to secure a scaffold. Dangerous work can be avoided.
Further, compared to the inspection in which the worker scans the first electrode 21 while walking, the inspection can be performed continuously accurately and at a constant speed, so that the working time can be shortened.
Further, since the first electrode 21 and the second electrode 23 are provided on the traveling carriage 19, the labor for the operator to carry in, handle, and carry out these inspection members is eliminated. This makes it possible to significantly reduce the number of workers involved in the inspection.

A method of inspecting a waterproof sheet according to claim 12 of the present invention is the method of inspecting a waterproof sheet according to claim 11.
The positional information acquisition unit 27 provided in the traveling carriage 19 acquires the positional information of the traveling carriage 19 and the first electrode 21.

In the method of inspecting the water-blocking sheet, the contact position of the first electrode 21 is acquired in real time as the traveling vehicle 19 travels.

A method for inspecting a waterproof sheet according to claim 13 of the present invention is the method for inspecting a waterproof sheet according to claim 12,
When the detector 31 detects the hole, the detection information and the position information are stored in the storage unit 29 by the control unit 33 provided in the traveling carriage 19.

In this method of inspecting a water-blocking sheet, a detection signal when a hole is detected is sent to the control unit 33, and the control unit 33 receives the detection signal and causes the position information acquisition unit 27 to cause the first electrode 21 to move. The current position of is stored in the storage unit 29. Then, the detection operation and the storage are repeated as the traveling vehicle 19 travels.

A method of inspecting a waterproof sheet according to claim 14 of the present invention is the method of inspecting a waterproof sheet according to claim 12 or 13,
At the start of the inspection, the position information acquisition unit 27 acquires the position information of the traveling carriage 19 and records the surrounding terrain information acquired by the scan measurement device as the surrounding terrain information,
The control unit 33 determines whether the traveling vehicle 93 is traveling based on the position information and the surrounding terrain information.

In this method of inspecting a water-impervious sheet, the current position is acquired by the position information acquisition unit 27 in an unknown construction target area, and at the same time, the surrounding map information is acquired by the scan measurement device provided in the traveling carriage 19. It is stored as information. By superimposing the current position on the surrounding terrain information while traveling, the control unit 33 can travel/pass through the unknown construction target area without overlapping traveling. At this time, obstacles such as walls and holes are also used for traveling determination at the same time based on the image information acquired by the scan measurement device, and the reliability of automatic traveling is enhanced.

A method for inspecting a waterproof sheet according to claim 15 of the present invention is the method for inspecting a waterproof sheet according to claim 14.
Store the construction area map information that is the construction target area in advance,
The control unit 33 determines whether the traveling carriage 93 travels based on the position information, the surrounding landform information, and the construction area map information.

In this method of inspecting a water-impervious sheet, construction area map information to be a construction target area is stored in advance. That is, the control unit 33 controls the traveling by using the construction area map information, the position information, and the surrounding terrain information as comprehensive information. In this case, since the construction area map information is stored in advance, it is not necessary to calculate the travel route from the surrounding terrain information. Accordingly, the control unit 33 can determine the traveling route based on the surrounding terrain information, so that the traveling control can be facilitated. Further, it is possible to perform highly reliable automatic traveling while simultaneously determining obstacles acquired by the scan measurement device.

A method of inspecting a waterproof sheet according to claim 16 of the present invention is the method of inspecting a waterproof sheet according to claim 15,
A plurality of coordinate points through which the traveling carriage 93 passes and a passing order of the coordinate points are given to the construction area map information.

In this method of inspecting a water-impervious sheet, coordinate points and the order of passage of the coordinate points are given in advance in the construction area map information. Accordingly, the control unit 33 can easily determine the travel route while sequentially obtaining the coordinate points from the position information. Further, it is possible to easily perform highly reliable automatic traveling while simultaneously determining obstacles acquired by the scan measurement device.

A method of inspecting a waterproof sheet according to claim 17 of the present invention is the method of inspecting a waterproof sheet according to any one of claims 11 to 16,
When the hole is detected by the detector 31, the first electrode 21 is reciprocated again at that position, and re-inspection is performed due to the change in the current, and when the change in the current is detected again. , And including a procedure for confirming the detection of the hole.

In this method of inspecting a water-blocking sheet, when the detector 31 detects a hole, the first electrode 21 is slid again and the position of the detected hole is passed again. Upon re-passing, the control unit 33 determines that the hole is detected again. If the detection is confirmed a predetermined number of times (for example, three times), the control unit 33 stores the hole detection information in the storage unit 29.

A method for inspecting a water-permeable sheet according to claim 18 of the present invention is the method for inspecting a water-permeable sheet according to any one of claims 11 to 17,
The traveling carriage 19 includes a first electrode advancing/retreating drive unit 45 that moves the first electrode 21 toward and away from the traveling carriage 19 in a direction substantially orthogonal to the traveling direction,
The first electrode advancing/retreating drive unit 45 has a winding device 51 that reels out or winds up the rope 49,
When the traveling carriage 19 travels on the flat surface 53 along the slope 13 descending from the flat surface 53, while stopping the traveling at a predetermined position,
The slope 13 is lowered and raised while the first electrode 21 supported by the end of the rope 49 by the winding or winding of the rope 49 of the winding device 51 is brought into sliding contact with the surface of the water-impervious sheet 15 by its own weight. It is characterized by

In this water shielding sheet inspection method, the first electrode 21 and the second electrode 23 attached to the end of the rope 49 have the same functions as the water shielding sheet inspection device 11 including the winding device 51. The flat surface 53 connected to the upper end of the slope 13 is inserted from the side of the traveling carriage 19 stopped in the traveling direction toward the slope 13. When the rope 49 is paid out from the winding device 51, the thrown-in first electrode 21 and second electrode 23 descend while slidingly contacting the surface of the water shield sheet 15 by its own weight. Thus, according to the method of inspecting the water-impervious sheet, it is possible to avoid a dangerous work in which the operator holds the first electrode 21 of a heavy object with both hands and scans it on a slope where it is difficult to secure a scaffold such as the slope 13.

A method for inspecting a waterproof sheet according to claim 19 of the present invention is the method for inspecting a waterproof sheet according to claim 18.
The first electrode 21 is formed to be long in the width direction orthogonal to the descending and ascending direction,
When the first electrode 21 descends and rises and returns, the traveling carriage 19 is caused to travel the width of the first electrode 21 to inspect the impermeable sheet 15 for the next width. And

In the method of inspecting the water-blocking sheet, when the first electrode 21 reaches the lower end of the slope 13, the winding device 51 stops the feeding of the rope 49, and then the rope 49 is wound up. When the winding of the first electrode 21 and the second electrode 23 by the winding device 51 is completed, the control unit 33 of the traveling carriage 19 travels by the width of the first electrode 21 (that is, the distance of the inspection end region). To move forward. After that, the inspection device 11 for the water-blocking sheet starts to input the next first electrode 21 and the second electrode 23, and thereafter, the same feeding and winding operations as described above are repeated to inspect all the slopes 13. finish.

A method of inspecting a waterproof sheet according to claim 20 of the present invention is the method of inspecting a waterproof sheet according to any one of claims 11 to 19,
The first electrode is a brush electrode.

In this method of inspecting a water-blocking sheet, the first electrode is configured as a brush electrode in which a metal brush is planted on the lower surface of the brush handle portion formed in the shape of a long rod, for example. According to the brush electrode 21, the brush bristles are in sliding contact with the surface of the water-impervious sheet 15 and a voltage is applied.

A method of inspecting a waterproof sheet according to claim 21 of the present invention is the method of inspecting a waterproof sheet according to any one of claims 11 to 20,
The second electrode is a pad electrode.

In this method of inspecting a water-blocking sheet, the second electrode is configured as a pad electrode formed in, for example, a disc shape or a rectangular plate shape. The pad electrode 23 is arranged in close contact with the surface of the water-blocking sheet 15 or the like on that surface.

According to the water impermeable sheet inspection device of the first aspect of the present invention, in the work of detecting perforations in the water impermeable sheet, the work labor is significantly reduced as compared with the conventional one, and the work time is shortened while improving the safety. it can.

According to the water impermeable sheet inspection apparatus of the second aspect of the present invention, since the position information can be acquired, the position of the traveling vehicle or the first electrode can be detected in real time as the traveling vehicle travels.

According to the water impermeable sheet inspection apparatus of the third aspect of the present invention, the current position of the first electrode, that is, the detection position of the hole of the water impermeable sheet can be acquired.

According to the waterproof sheet inspection device of the fourth aspect of the present invention, the detection operation and the storage are repeated as the traveling vehicle travels, that is, the position information is automatically acquired, inspected, and recorded. You can

According to the waterproof sheet inspection device of the fifth aspect of the present invention, the traveling carriage can be remotely controlled by the control device.

According to the water impervious sheet inspection device of the sixth aspect of the present invention, it is possible to grasp in real time the location of perforations formed in the water impervious sheet on the map.

According to the waterproof sheet inspection device of the seventh aspect of the present invention, a wide range of inspection is performed by moving the first electrode toward and away from the side of the traveling carriage in a direction substantially orthogonal to the traveling direction of the traveling carriage. You can

According to the water impervious sheet inspection apparatus of the eighth aspect of the present invention, the slope can be safely inspected by lowering and ascending the first electrode using its own weight.

According to the water impermeable sheet inspection apparatus of the ninth aspect of the present invention, the contact area of the water impermeable sheet with the brush electrode, that is, the inspection area, which is the energization area, can be set to a predetermined length.

According to the water impermeable sheet inspection apparatus of the tenth aspect of the present invention, the current-carrying area can be secured in a predetermined area by the pad electrode.

According to the water shielding sheet inspection method of the eleventh aspect of the present invention, in the perforation detection work of the water shielding sheet, the work labor can be reduced and the safety can be improved while the working time can be shortened as compared with the conventional method.

According to the water proof sheet inspection device of the twelfth aspect of the present invention, the positional information of the traveling carriage or the first electrode can be acquired in real time as the traveling carriage travels.

According to the water impermeable sheet inspection device of the thirteenth aspect of the present invention, the detection operation and the storage are repeated as the traveling vehicle travels, that is, the position information is automatically acquired, inspected, and recorded. You can

According to the water shielding sheet inspection method of the fourteenth aspect of the present invention, it is possible to automatically travel the traveling vehicle by acquiring the position information and the surrounding topography information with respect to the unknown construction target area.

According to the method of inspecting a water-permeable sheet according to claim 15 of the present invention, by storing the construction area map information in advance, it is possible to facilitate the traveling determination process and automatically drive the traveling carriage. ..

According to the water shielding sheet inspection method of the sixteenth aspect of the present invention, the coordinate points through which the traveling vehicle passes and the order thereof are determined, so that the traveling determination process is facilitated and the traveling vehicle is automatically operated. Can be run.

According to the method of inspecting a water-proof sheet according to claim 17 of the present invention, the reliability of perforation detection can be improved.

According to the water shielding sheet inspection method of the eighteenth aspect of the present invention, the slope can be safely inspected by lowering and ascending the first electrode by utilizing its own weight.

According to the water shielding sheet inspection method of the 19th aspect of the present invention, the structure of the first electrode advancing/retreating drive unit can be simplified by matching the traveling direction of the traveling carriage with the extending direction of the first electrode. ..

According to the water proof sheet inspection device of the twenty-first aspect of the present invention, the contact area with the water proof sheet by the brush electrode, that is, the inspection range which is the energization range can be set to a predetermined length.

According to the water impermeable sheet inspection apparatus of the twenty-first aspect of the present invention, the current-carrying area can be secured in a predetermined area by the pad electrode.

It is a perspective view showing the situation where the inspection device of the impermeable sheet concerning a 1st embodiment of the present invention inspects a slope. It is a side view of FIG. It is sectional drawing of the water-blocking structure provided with the water-blocking sheet. It is a sectional view of another impermeable structure provided with an impermeable sheet. It is a top view showing an example of a construction area figure. It is a principal part top view which shows an example of the construction target area|region where several slopes are connected via a flat surface. 5A is an A-A cross-sectional view of FIG. 5, FIG. 5B is an enlarged view of part A showing the positional relationship between the sheet holding concrete and the inspection device, and FIG. 7C is another positional relationship between the sheet holding concrete and the inspection device. It is a B section enlarged view. It is a schematic diagram explaining the inclination gradient of a slope. It is a block diagram showing the hardware constitutions of the inspection device concerning a 1st embodiment. It is a flow chart showing the inspection procedure of the inspection method of the impermeable sheet concerning a 1st embodiment. It is a perspective view of the inspection apparatus which concerns on 2nd Embodiment. It is a perspective view showing the use condition of an inspection device. It is a block diagram showing the hardware constitutions of the inspection device concerning a 2nd embodiment. It is a flow chart showing the inspection procedure of the inspection method of the waterproof sheet concerning a 2nd embodiment. It is a top view showing an example of construction area map information with which a passage point and a passage order were added. It is a flow chart showing the inspection procedure of the inspection method of the impermeable sheet concerning a 3rd embodiment. It is a top view showing an example of construction area map information to which a passing point was added. FIG. 11 is a plan view of an inspection apparatus according to another configuration example in which a second electrode (pad electrode) is provided on the lower surface. FIG. 19 is a side view of the inspection device shown in FIG. 18.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing a situation in which an inspection apparatus 11 for a water-blocking sheet according to a first embodiment of the present invention inspects a slope 13.
The waterproof sheet inspection device 11 and the waterproof sheet inspection method according to the present embodiment are preferably applied to a waterproof sheet laying site where a waterproof structure 60 including the waterproof sheet 15 is laid. Examples of water shielding sheet laying sites include general/industrial waste landfill disposal sites, muddy water sedimentation ponds, factory wastewater treatment ponds, sludge dredging ponds, agricultural reservoirs, residential land development adjustment ponds, golf courses, gardens and parks. Examples include water proofing for ponds, agricultural/industrial waterways, drainage channels, box tunnels, buildings, pools, tanks, and other underground structures, and earth dams, rockfill dams, river dams, and reservoir dams. In the present embodiment, an example will be described in which the impermeable sheet laying site is the industrial waste landfill disposal site 17 (FIG. 5).

The waterproof sheet inspection device 11 according to the first embodiment (hereinafter, simply referred to as “inspection device”) includes a traveling carriage 19, a brush electrode 21 as a first electrode, and a pad electrode 23 as a second electrode. A power supply unit 25 (FIG. 9), a position information acquisition unit 27 (FIG. 9), a storage unit 29 (FIG. 9), a detector 31 (FIG. 9), and a control unit 33 (FIG. 9). It has as a main structure.

The traveling carriage 19 has a traveling device 35 and travels on the water-blocking sheet 15 stretched on the covering surface 37. The traveling device 35 has, for example, a plurality of electric motors for driving wheels, and causes the traveling vehicle 19 to move forward, stop, retreat, turn right, or turn left in response to a travel control signal from the controller 33.

The traveling carriage 19 is provided with a drop bar 39. The drop bar 39 prevents the traveling carriage 19 from wobbling while stopped. The drop rod 39 is driven by a rod drop mechanism 41 that advances and retracts the rod. In this case, the rod drop mechanism 41 can be drive-controlled by the control unit 33. Further, the drop bar 39 may be manually moved back and forth by an operator.

The brush electrode 21 is provided on the traveling carriage 19 and is in contact with the surface of the water shield sheet 15. In the present embodiment, the brush electrode 21 is formed in a long shape that is long in the traveling direction of the traveling carriage 19. The brush electrode 21 is configured, for example, by implanting a metal brush on the lower surface of the brush handle portion formed in the shape of a long rod. A voltage is applied to the brush via the detector 31.

The pad electrode 23 is provided on the traveling carriage 19, is arranged within a certain distance from the brush electrode 21, and is in contact with the surface of the waterproof sheet 15. Therefore, even if the brush electrode 21 is moved, the pad electrode 23 is arranged on the water-blocking sheet while being separated from the brush electrode 21 within a certain distance. That is, at the time of inspection, the brush electrode 21 and the pad electrode 23 are always in contact with the surface of the water shield sheet 15.

The fixed distance from the brush electrode 21 where the pad electrode 23 is arranged means that the brush electrode 21 and the pad electrode 23 (that is, the position where they are grounded negatively) when a conductive mat or a conductive layer is provided on the back of the waterproof sheet 15. ) Is the maximum distance. For example, in the spark inspection for inspecting the presence or absence of holes (pinholes, etc.) in the water-blocking sheet 15, a voltage of 15 to 35 kV is applied between the brush electrode 21 and the conductive mat or conductive layer below the brush electrode 21. In the spark inspection, a discharge phenomenon occurs when the brush electrode 21 passes over the pinhole, and the detector 31 detects the presence of the pinhole. In such a spark inspection, the maximum distance is limited to about 5 m. That is, the brush electrode 21 is arranged within the range of the inspection region 43 (FIG. 8) having a radius of 5 m with the pad electrode 23 as the center.

In addition, the distance between the pad electrode 23 and the brush electrode 21 causes electrostatic coupling between the brush electrode 21 and the lower side of the water shield sheet to form a current path to inspect the water shield sheet 15. Can be approximately the same maximum distance.

A known technique can be used as a method for detecting the holes by the brush electrode 21 and the pad electrode 23 that are arranged in contact with each other on the same surface of the water-blocking sheet 15 so as to be separated from each other. For example, a pinhole detection method for detecting the presence or absence of discharge by applying a voltage disclosed in JP-A-10-288563, and electrostatic discharge between the brush electrode 21 and the lower side of the water-blocking sheet disclosed in JP-A-2003-112139. An example is a water-impervious sheet inspection method that utilizes the fact that a current flows when a bond occurs to form a current path.

The brush electrodes 21 may be formed in a long length of a predetermined length and linearly insulated and connected to each other, and the power supply unit 25 may be connected to each brush electrode 21. The connection between the brush electrodes is preferably movable with a certain degree of freedom, as in a so-called snake-like structure. Thereby, the large brush electrode 21 can be configured without causing a voltage drop. With such a large size brush electrode 21, the maximum distance can be further increased. Further, according to the brush electrode 21 having the degree of freedom in the connecting portion, it is possible to scan and inspect the brush electrode 21 in the direction orthogonal to the inclination direction of the slope 13 (that is, to use the brush electrode 21 vertically). Becomes

The power supply unit 25 (FIG. 9) is provided on the traveling carriage 19 and applies a voltage between the brush electrode 21 and the pad electrode 23. The power supply unit 25 may be a storage battery mounted on the traveling carriage 19. The power supply unit 25 supplies a voltage between the brush electrode 21 and the pad electrode 23, and also supplies power to each device such as the traveling device 35.

The traveling carriage 19 includes a brush electrode advancing/retreating drive unit 45 (FIG. 9) that moves the brush electrode 21 toward and away from the traveling carriage 19 in a direction substantially orthogonal to the traveling direction. The brush electrode 21 moved by the brush electrode advance/retreat driving unit 45 is provided with an antenna 47 connected to the position information acquisition unit 27.

FIG. 2 is a side view of FIG.
The inspection device 11 includes a winding device 51 in which the brush electrode advancing/retreating drive unit 45 pays out or winds up the rope 49. The traveling carriage 19 travels on the flat surface 53 along the slope 13 that is inclined downward from the flat surface 53. On the other hand, when the traveling carriage 19 stops traveling at a predetermined position, the brush electrode 21 and the pad electrode 23 supported by the ends of the rope 49 by the unwinding or winding of the rope 49 of the winding device 51 are attached to the waterproof sheet 15 by its own weight. The slope 13 can be lowered and raised while being in sliding contact with the surface of the.

It is preferable to provide a pair of winding devices 51 so that, for example, both ends of the brush electrode 21 in the longitudinal direction can be supported. Each of the winding devices 51 has a winding reel 55 that is driven to rotate forward and backward by a winding motor, a support reel 57 that guides the rope 49 fed from the winding reel 55 in a predetermined direction, and the like. It is preferable that a plurality of auxiliary wheels 59 are attached to the brush handle portion so as to smoothly descend and rise on the slope 13.

Although illustration is omitted, the traveling carriage 19 may be provided with another winding device that independently lowers and raises the pad electrode 23 in synchronization with the winding device 51. In addition, the pad electrode 23 may be connected to the brush electrode 21 with an insulating structure such that a dedicated winding device is not required and a certain distance is secured from the brush electrode 21.

Examples of the type of the water shield sheet 15 used at the disposal site to be inspected include soft vinyl chloride, polyethylene, and olefin-based thermoplastic resin. The water shield sheet 15 can be formed of a single layer. Further, the water-blocking sheet 15 may have a two-layer structure using a polyethylene material, in which the upper layer is non-conductive and the lower layer is the conductive layer 61. Further, the water-blocking sheet 15 may be made of a polyethylene material in which the upper layer and the lower layer have different colors. In this case, the water-blocking sheet 15 may have a structure in which the upper layer is white or green and the black layer in the lower layer is visible when scratched, making it easy to visually confirm the scratch.

FIG. 3 is a cross-sectional view of a water shield structure 60 using the water shield sheet 15.
The water-blocking structure 60 using the water-blocking sheet 15 is roughly divided into the following two patterns from the viewpoint of performing a spark inspection, for example. As shown in FIG. 3, the first pattern of the water-impervious structure 60 includes a protective mat 63, a water-impermeable sheet 15, a conductive mat 65, a water-impermeable sheet 15, and a protective mat 63, which are laminated in this order from the lower layer 5 Become a layer. A cushioning material such as a non-woven fabric is used for the protective mat 63.

FIG. 4 is a sectional view of another impermeable structure 60 using the impermeable sheet 15.
As shown in FIG. 4, the second pattern of the water-impervious structure 60 includes a protective mat 63, a water-impermeable sheet 15, a protective mat 63, a water-impermeable sheet with a conductive layer 15, and a protective mat 63, which are laminated in this order from the lower layer. There are 5 layers. In the water shield sheet 15 with a conductive layer, the conductive layer 61 is formed on the lower surface of the water shield sheet 15. The impermeable sheet 15 with a conductive layer has a conductive layer 61 such as an aluminum sheet adhered to the back surface of the impervious layer 67, or a conductive layer 61 such as an aluminum vapor-deposited film applied to the back surface of the impervious layer 67. Is used.

The water-impervious structure 60 at the disposal site basically has the five-layer structure as described above. The water-impervious structure 60 may include what is called a self-repairing material, which meets the requirements of each site, in the above-mentioned five-layer structure.

In the present embodiment, only the second impermeable sheet 15 from the above five layers is the inspection target. In this case, as will be described later, the inspection is performed before laying the uppermost protection mat 63. The inspection target may be the water shield sheet 15 in the second layer from the bottom of the above five layers, and in that case, before the conductive mat 65 or the protection mat 63 in the third layer is laid. It suffices to use a procedure for performing the inspection described below.

FIG. 5 is a plan view showing an example of a construction area diagram.
For example, in the industrial waste landfill disposal site 17, as shown in the construction area diagram of FIG. 5, the central portion surrounded by the surrounding slopes 13 is constructed as a flat bottom surface 69. A plurality of slopes 13 are multi-stepped toward the bottom surface 69 via the step portion 71 which is a flat surface. Further, from the bottom surface 69, a vehicle passage 75, which is an inclined path leading to the ground surface 73, is provided.

FIG. 6 is a main part plan view showing an example of a construction target area in which a plurality of slopes 13 are connected via a flat surface 53.
When inspecting the slope 13, the inspection device 11 travels along the slope 13 in the horizontal direction on the ground surface 73 or the step 71. The inspection device 11 stops at a certain position of the step 71, for example, and lowers and raises the brush electrode 21 and the pad electrode 23 from the side to the slope 13 to inspect the water-blocking sheet 15.

7A is a sectional view taken along the line AA in FIG. 5, FIG. 7B is an enlarged view of a portion A showing the positional relationship between the sheet holding concrete 77 and the inspection device 11, and FIG. 7C is a diagram showing the sheet holding concrete 77 and the inspection device 11. It is a B section enlarged view which shows another positional relationship.
In the case where the water shielding sheet laying site has a multi-stage structure, a horizontal plane is provided as a step 71 in the middle as described above. The step 71 is provided so that the water blocking sheet 15 from the top to the bottom of the slope 13 does not shift in the middle, that is, the weight of the water blocking sheet itself holds down the slope 13 without sliding down. .. Therefore, the concave groove 79 is provided in a part of the horizontal plane. In the stepped portion 71, concrete 77 for pressing is put in the groove 79 to prevent the impermeable sheet 15 from shifting. The inspection device 11 can run while avoiding the concave grooves 79 and the concrete 77.

FIG. 8 is a schematic diagram for explaining the slope gradient of the slope 13.
The distance of the slope 13 varies depending on the industrial waste landfill disposal site 17. However, the height of most disposal sites is 5.0m. The gradient is "1:1.0", "1:1.2", "1:1.5", or the like. For example, when the vertical height is 5 m and the gradient is 1.5, the length of the bottom portion is 6.5 m, and the length of the slope 13 is 8.2 m.

Next, the hardware configuration of the inspection device 11 will be described.

FIG. 9 is a block diagram showing the hardware configuration of the inspection device 11 according to the first embodiment.
The position information acquisition unit 27 acquires the current position by using GNSS (Global Navigation Satellite System) which is a satellite positioning system. The position information acquisition unit 27 is provided on either the traveling carriage 19 or the brush electrode 21. In this embodiment, the position information acquisition unit 27 is mounted on the traveling carriage 19. Further, the antenna 47 connected to the position information acquisition unit 27 is attached to the brush electrode 21. Thereby, the inspection device 11 can acquire the current position of the brush electrode 21, that is, the detection position of the hole. A well-known technique can be used as the satellite positioning system, and thus detailed description thereof will be omitted.

The storage unit 29 is provided in the traveling carriage 19. The storage unit 29 stores map information, position information, and detection information that are construction target areas. In addition to this, the storage unit 29 also stores construction area map information, travel routes, surrounding terrain information, and the like necessary for controlling the traveling device 35.

The detector 31 is provided on the traveling vehicle 19. The detector 31 detects the hole by the change in the current when the brush electrode 21 passes through the holed surface of the water shield sheet 15. The detector 31 can be equipped with a device suitable for spark inspection or inspection for forming a current path by electrostatic coupling.

The control unit 33 is provided on the traveling carriage 19. The control unit 33 can be, for example, a computer having an arithmetic device. The control unit 33 stores the detection information and the position information in the storage unit 29 when the detector 31 detects the hole, and also performs traveling control by controlling the traveling device 35. Further, the control unit 33 also enables the rod drop mechanism 41 to be driven by the drop rod operation signal sent from the control device 81.

A transmission/reception device 83 connected to the control unit 33 is mounted on the traveling vehicle 19. The inspection device 11 may include a control device 81 that is separate from the traveling carriage 19. The control device 81 is wirelessly connected to the transmission/reception device 83 and operates the traveling device 35 and the like via the control unit 33. As a result, the inspection device 11 can remotely control the traveling of the traveling carriage 19 wirelessly by the control device 81.

The inspection device 11 may include the operation panel 85 on the traveling carriage 19. The operation panel 85 is provided with a plurality of operation buttons for operating the traveling of the traveling carriage 19. The operation panel 85 may be a touch panel type display device in which these operation buttons are displayed in the display area. The function of operating the traveling vehicle 19 with the operation panel 85 is the same as the function of the control device 81.

The inspection apparatus 11 can also include a portable information processing terminal 87 wirelessly connected to the control unit 33 via the transmission/reception apparatus 83. The portable information processing terminal 87 has a display device 89. The portable information processing terminal 87 reads the information from the storage unit 29 via the control unit 33 to superimpose the detection information and the position information on the map information so that the display device 89 can display the information.

Next, a method of inspecting the water blocking sheet will be described.

FIG. 10 is a flow chart showing the inspection procedure of the method of inspecting the water blocking sheet according to the first embodiment.
In the inspection method according to this embodiment, a case will be described in which the inspection device 11 shown in FIG. 1 inspects the water blocking sheet 15 stretched on the slope 13. As described above, a procedure in which the inspection is performed after the water-blocking sheet 15 is stretched and before the protective mat 63 is stretched during the construction work for covering the slope 13 as the water-blocking structure 60. Becomes

In order to inspect the water-blocking sheet 15, first, the inspection apparatus 11 is carried into the industrial waste landfill disposal site 17 (AST1). By wireless operation using the control device 81, the traveling carriage 19 is caused to travel on the water-blocking sheet 15 stretched on the covering surface 37, and the inspection device 11 is moved to the inspection start position (AST2). When the inspection device 11 reaches the inspection position, the rod drop mechanism 41 is operated to determine the inspection position and stabilize the inspection device 11 (ASt3).

The winding device 51 is operated by the control device 81 to start the descent of the brush electrode 21 and the pad electrode 23 (AST4). The traveling carriage 19 unwinds the rope 49 of the winding device 51, and lowers the slope 13 while sliding the brush electrode 21 supported by the end of the rope 49 against the surface of the water blocking sheet 15 by its own weight. The detector 31 starts energization as the brush electrode 21 and the pad electrode 23 start descending (ASt5). That is, the power supply unit 25 applies a voltage between the brush electrode 21 and the pad electrode 23. The pad electrode 23 is brought into sliding contact with the surface of the water blocking sheet 15 within a certain distance from the brush electrode 21.

When the brush electrode 21 reaches the lower end of the slope by a contact sensor or the like provided on the brush electrode 21, the winding device 51 stops the lowering of the brush electrode 21 (AST6). The winding device 51 accommodates the brush electrode 21 and the pad electrode 23 by winding the rope 49 (ASt7). Next, it is determined whether or not the inspection range has ended (AST8). When the inspection range ends, the inspection ends.

On the other hand, when the inspection range is not completed, the traveling carriage 19 is caused to travel to the next inspection position (AST2).

The brush electrode 21 is formed to be long in the width direction orthogonal to the descending and ascending direction. When the brush electrode 21 descends and rises and returns, the inspection device 11 causes the traveling carriage 19 to travel the width of the brush electrode 21 and inspects the impermeable sheet 15 for the next width. Hereinafter, ASt3 to ASt8 are similarly repeated.

The control unit 33 determines the presence/absence of a spark while the brush electrode 21 is descending based on the presence/absence of a detection signal sent from the detector 31 (ASt9). If there is no detection, the lowering of the brush electrode 21 is continued.

On the other hand, when the control unit 33 receives the detection signal from the detector 31, the control unit 33 raises the brush electrode 21 by a predetermined distance, for example, 50 cm, and then lowers it again by 50 cm to re-inspect the same location (ASt10). The re-inspection is repeated until the number of sparks reaches a predetermined number (AST11). The number of re-examinations is set to 3 times, for example. The control unit 33 acquires the spark position by the position information acquisition unit 27 when the detection signal is sent during the three inspections.

In other words, in the method of inspecting the water-blocking sheet, when the hole is detected by the detector 31, the brush electrode 21 is reciprocated again at that position, and the re-inspection is performed due to the change in the current, and the change in the current again occurs. When detected, the hole detection is confirmed.

When the third detection signal is sent from the detector 31, the control unit 33 causes the position information acquisition unit 27 provided on the traveling carriage 19 to acquire the position information of the brush electrode 21. When the detector 31 detects the hole, the control unit 33 stores the detection information and the position information in the storage unit 29 provided in the traveling vehicle 19 (ASt12).

The control unit 33 also transmits the detection information and the position information to the portable information processing terminal 87 via the transmission/reception device 83 (AST13).

In the inspection device 11, after detecting the holes of the water-impervious sheet 15, the brush electrode 21 is lowered again, and ASt6 to ASt13 are repeated thereafter.

Next, the operation of the above configuration will be described.
In the water impermeable sheet inspection device 11 according to the first embodiment, the traveling carriage 19 mounts the brush electrode 21 and the pad electrode 23 and travels while contacting these with the surface of the water impermeable sheet 15. Compared to a person holding the brush electrode 21 in his hand and inspecting a vast area, the labor can be greatly reduced.

Further, by making the brush electrode 21 and the pad electrode 23 in contact with the slope 13, it is possible to avoid the dangerous work of holding the brush electrode 21 of a heavy object with both hands on a slope where it is difficult to secure a scaffold. Becomes

Further, compared to the inspection in which the worker scans the brush electrode 21 while walking, the inspection can be performed continuously accurately and at a constant speed, so that the working time can be shortened. Furthermore, it is possible to prevent missing inspection points (inspection omissions) in a vast area.

Further, since the traveling carriage 19 is equipped with the power supply unit 25, it is not necessary to arrange the electric wire which has been conventionally connected to apply the voltage to the brush electrode 21, and the workability can be improved also by this.

Further, since the brush electrode 21 and the pad electrode 23 are provided on the traveling carriage 19, the labor for the operator to carry in, handle, and carry out these inspection members is eliminated. This makes it possible to significantly reduce the number of workers involved in the inspection.

Further, in the water impermeable sheet inspection device 11, the traveling carriage 19 includes the brush electrode advancing/retreating drive unit 45. The brush electrode advancing/retreating drive unit 45 moves the brush electrode 21 toward and away from the traveling carriage 19 in a direction substantially orthogonal to the traveling direction of the traveling carriage 19. As a result, the water impermeable sheet inspection device 11 can perform the inspection by stopping the traveling and moving the brush electrode 21 toward and away from the position in the direction orthogonal to the traveling direction. That is, the water impermeable sheet inspection device 11 can perform efficient inspection by scanning the surface of the water impermeable sheet 15 in the XY directions by the traveling of the traveling carriage 19 and the approaching/separating operation of the brush electrodes 21. As a result, the brush electrode 21 can be moved toward and away from the side of the traveling carriage 19 in a direction substantially orthogonal to the traveling direction of the traveling carriage 19 to perform a wide range inspection.

Further, in the water impermeable sheet inspection device 11, the brush electrode advancing/retreating drive unit 45 includes the winding device 51. The winding device 51 enables the rope 49 to be paid out or wound up. The brush electrode 21 and the pad electrode 23 are attached to the ends of the rope 49 with a predetermined distance therebetween. It is preferable that the brush electrode 21 is provided with a plurality of auxiliary wheels 59 so that all of the brush tips are in uniform sliding contact with the surface of the water-impervious sheet 15 with a constant pressing force. On the other hand, in the pad electrode 23, the auxiliary wheel 59 may be omitted if the flat plate-shaped electrode surface is in sliding contact with the surface of the water-impervious sheet 15.

The brush electrode 21 and the pad electrode 23 attached to the ends of these ropes 49 are attached to the flat surface 53 connected to the upper end of the slope 13 from the side of the traveling carriage 19 stopped in the traveling direction. It is thrown toward 13. When the rope 49 is paid out from the winding device 51, the brush electrode 21 and the pad electrode 23 that have been thrown into the upper part of the slope 13 start descending while slidingly contacting the surface of the water-impervious sheet 15 by its own weight. The brush electrode 21 and the pad electrode 23 are lowered to the lower end of the slope 13 while maintaining a constant distance. During this descent, the water blocking sheet 15 on the surface of the slope 13 through which the brush electrode 21 passes is inspected.

When the brush electrode 21 reaches the lower end of the slope 13, the winding device 51 stops the feeding of the rope 49 by, for example, a pressure sensor, and then winds the rope 49. When the rope 49 is wound up, the brush electrode 21 and the pad electrode 23 ascend and descend along the same path as when descending, but the inspection at this time may or may not be performed.

When the winding device 51 completes the winding of the brush electrode 21 and the pad electrode 23, the control unit 33 of the traveling carriage 19 advances the traveling carriage 19 by the distance of the inspection end region. After that, the water-impermeable sheet inspection device 11 starts to input the next brush electrode 21 and pad electrode 23, and thereafter, the same feeding and winding operations as described above are repeated, and all inspections of the slope 13 are completed. .. As a result, the slope 13 can be safely inspected by lowering and raising the brush electrode 21 using its own weight.

Further, in the water impermeable sheet inspection device 11, the traveling vehicle 19 is provided with the transmission/reception device 83. The transmission/reception device 83 enables the traveling device 35 via the control unit 33 or directly. On the other hand, the waterproof sheet inspection device 11 includes a control device 81 that is separate from the traveling carriage 19. The control device 81 operates the traveling device 35 by wirelessly communicating with the transmission/reception device 83. That is, the traveling carriage 19 can be controlled for traveling by remote control using the control device 81, as in the case where the operation panel 85 attached to the carriage body is operated. Examples of the traveling control include starting/stopping, retreating, turning right, turning left, and driving the brush electrode advancing/retreating drive unit 45. As a result, the traveling carriage 19 can be remotely controlled by the control device 81.

Further, in the water impermeable sheet inspection device 11, the portable information processing terminal 87 including the display device 89 is wirelessly connected to the transmission/reception device 83 of the traveling vehicle 19. The portable information processing terminal 87 is connected to the control unit 33 via the transmission/reception device 83. The portable information processing terminal 87 connected to the control unit 33 reads detection information and position information from the storage unit 29 to the control unit 33 by operating an operation button or the like displayed on a part of the display device 89, for example. Let The portable information processing terminal 87 wirelessly acquires the read detection information and position information, and superimposes the detection information and position information on the map information and displays it on the display device 89. As a result, it is possible to grasp in real time the location of perforations formed in the water-blocking sheet 15 on the map.

In the waterproof sheet inspection method according to the first embodiment, similarly to the operation of the waterproof sheet inspection apparatus 11 described above, the traveling carriage 19 is equipped with the brush electrodes 21 and the pad electrodes 23, and these are mounted on the waterproof sheet. Since the vehicle travels while being in contact with the surface of 15, it is possible to significantly reduce the labor compared to the case where the operator conventionally holds the brush electrode 21 and inspects a vast area.

Further, by making the brush electrode 21 and the pad electrode 23 in contact with the slope 13, it is possible to avoid the dangerous work of holding the brush electrode 21 of a heavy object with both hands on a slope where it is difficult to secure a scaffold. Becomes

Further, compared to the inspection in which the worker scans the brush electrode 21 while walking, the inspection can be performed continuously accurately and at a constant speed, so that the working time can be shortened.

Further, since the brush electrode 21 and the pad electrode 23 are provided on the traveling carriage 19, the labor for the operator to carry in, handle, and carry out these inspection members is eliminated. This makes it possible to significantly reduce the number of workers involved in the inspection.

In addition, in the method of inspecting the water-impervious sheet, the brush electrode 21 and the pad electrode 23 attached to the end of the rope 49 are the same as the action of the water-impermeable sheet inspecting apparatus 11 including the winding device 51 described above. The flat surface 53 connected to the upper end of the slope 13 is inserted from the side of the traveling carriage 19 stopped in the traveling direction toward the slope 13. When the rope 49 is paid out from the winding device 51, the brush electrode 21 and the pad electrode 23 that have been thrown in descend while slidingly contacting the surface of the water-impervious sheet 15 by their own weight. As a result, in the method of inspecting the water-blocking sheet, it is possible to avoid the dangerous work of carrying the brush electrode 21 of a heavy object with both hands on a slope where it is difficult to secure a scaffold. As a result, the slope 13 can be safely inspected by lowering and raising the brush electrode 21 using its own weight.

Further, in the method of inspecting the water-impervious sheet, when the brush electrode 21 reaches the lower end of the slope 13, the winding device 51 stops the feeding of the rope 49, and then the rope 49 is wound up. When the winding device 51 completes the winding of the brush electrode 21 and the pad electrode 23, the control unit 33 of the traveling carriage 19 advances the traveling carriage 19 by the width of the brush electrode 21, that is, the distance of the inspection end region. After that, the water-impermeable sheet inspection device 11 starts to input the next brush electrode 21 and pad electrode 23, and thereafter, the same feeding and winding operations as described above are repeated, and all inspections of the slope 13 are completed. .. As a result, by making the traveling direction of the traveling carriage 19 and the extending direction of the brush electrode 21 coincide with each other, the structure of the brush electrode advancing/retreating drive unit 45 can be simplified.

Further, in this method of inspecting a water-blocking sheet, when the detector 31 detects a hole, the brush electrode 21 is slid again and the position of the detected hole is passed again. Upon re-passing, the control unit 33 determines that the hole is detected again. When the detection is confirmed a predetermined number of times, for example, three times, the control unit 33 stores the hole detection information in the storage unit 29. As a result, the reliability of hole detection can be improved.

In addition, in the said 1st Embodiment, although the brush electrode 21 and the pad electrode 23 are an example which each arrange|positions on the surface of the water-blocking sheet 15 and performs detection, the pad electrode 23 is the back surface side of the water-blocking sheet 15. That is, a method may be used in which the conductive mat 65 and the conductive layer 61 are in direct contact with each other, and electricity is applied in the thickness direction of the water shield sheet 15. In this case, the pad electrode 23 is configured to be immovable with respect to the moving brush electrode 21, and the pad electrode 23 is brought into conduction within the spreading range of the conductive mat 65 and the conductive layer 61. The inspection can be performed even if the maximum distance of 5 m is exceeded. However, the connection position of the pad electrode 23 is limited to the uppermost edge portion of the slope 13 because it needs to be a position where the water-impervious sheet 15 is not covered, and the connection position with the position of the traveling carriage 19 or the like. The inspection procedure will take into consideration.

Next, the inspection device 91 for the water-permeable sheet and the inspection method for the water-permeable sheet according to the second embodiment will be described.

FIG. 11 is a perspective view of the inspection device 91 according to the second embodiment. In addition, in the second embodiment, the same members as those shown in the first embodiment are designated by the same reference numerals, and a duplicate description will be omitted.
In the inspection device 91 according to the second embodiment, a traveling carriage 93 includes a brush support arm 95 extending forward (lower left direction in the drawing). The brush electrode 21 is attached to the tip of the brush support arm 95. The pad electrode 23 is supported by the pad support arm 97 between the inspection device 91 and the brush electrode 21.

Further, the traveling carriage 93 is provided with four omni wheels 99 that can move in all directions. In the case of an ordinary wheel, the traveling carriage 93 cannot be turned at a right angle, but the omni wheel 99 can move forward, backward, or turn in any direction, and can also turn at a right angle. Therefore, not only the slope 13 but also a flat surface such as the bottom surface can be advanced, and the inspection around the change point (step 71) of the slope 13 is also possible. Further, since the brush electrode 21 can be moved in any direction in this manner, the brush electrode 21 may be on the moving direction side, and the brush electrode 21 can be moved so as to be pulled, depending on the situation of the inspection area. You can proceed freely.

FIG. 12 is a perspective view showing a usage state of the inspection device 91.
In the waterproof sheet inspection method according to the second embodiment, the position information acquisition unit 27 acquires the position information of the traveling carriage 19 at the start of the inspection. In addition to the acquisition of the position information, the traveling vehicle 93 records the acquired surrounding topographical information as the surrounding topographical information by the scanning measuring device which is the surrounding measuring instrument 101 (see FIG. 13). In the inspection device 91, the control unit 33 determines whether the traveling vehicle 19 is traveling based on the position information and the surrounding terrain information.

FIG. 13 is a block diagram showing the hardware configuration of the inspection device 91 according to the second embodiment.
The inspection device 91 has substantially the same configuration as the hardware configuration of the first embodiment. The inspection apparatus 91 is different in that a peripheral measuring instrument 101 is provided in place of the brush electrode advancing/retreating drive unit 45 and that the rod dropping mechanism 41 is not provided. Other configurations are the same as those of the inspection device 11 of the first embodiment. The inspection device 91 according to the second embodiment is capable of detecting obstacles such as holes and irregularities on the covering surface 37 by mounting the peripheral measuring device 101. In this way, the inspection device 91 stores the construction area map information in the storage unit 29 in advance, so that the inspection device 91 can perform the inspection traveling in a fully automatic manner while avoiding obstacles.

FIG. 14 is a flow chart showing the inspection procedure of the method of inspecting the water blocking sheet according to the second embodiment.
In the method of inspecting the water-permeable sheet according to the second embodiment, the construction area map information is created on the desk in advance before the inspection device 91 travels (BSt1). The construction area map information is associated with the coordinate points through which the traveling carriage 93 passes and the passing order of the coordinate points. As a result, the travel route is determined. The construction area map information is stored in the storage unit 29 (BSt2).

The inspection apparatus 91 is carried into the industrial waste landfill disposal site 17, and the traveling carriage 19 is caused to travel on the impermeable sheet 15 stretched on the covering surface 37 by wireless operation using the control device 81. The traveling vehicle 93 receives the GNSS by the position information acquisition unit 27. Further, the traveling vehicle 93 observes the surrounding topography with the surrounding measuring instrument 101 (BSt3).

The control unit 33 determines the presence/absence of an obstacle on the travel route from the acquired surrounding terrain information. If there is an obstacle in the traveling direction and the vehicle cannot proceed, the traveling route is corrected (BSt5). After making the correction, the control unit 33 returns the process to the BSt3 and reacquires the surrounding terrain information on the new travel route.

On the other hand, when traveling is possible, traveling is started (BSt6). At the same time, the spark inspection is started (BSt7). The control unit 33 determines the presence/absence of a spark based on the presence/absence of a detection signal sent from the detector 31 (BSt8).

Upon receiving the detection signal from the detector 31, the control unit 33 starts counting the number of sparks (BSt9). The control unit 33 turns off the voltage application to the brush electrode 21 (BSt10), and then moves the traveling carriage 19 backward by 1 m (BSt11).

The control unit 33 restarts the traveling from the retracted position, applies a voltage to the brush electrode 21 to make sliding contact, and reinspects the same place. The re-inspection is repeated until the number of sparks reaches a predetermined number. The number of times of re-inspection is set to 3 times, for example. When the detection signal is sent during the three inspections, the control unit 33 determines the detection, acquires the spark position by the position information acquisition unit 27, and stores the spark position in the storage unit 29 (BSt12).

The control unit 33 also transmits the detection information and the position information to the portable information processing terminal 87 via the transmission/reception device 83 (AST13).

Next, the control unit 33 stores the passing coordinates in the storage unit 29 (BSt14). The control unit 33 determines whether the traveling route is right or wrong from the passing coordinates (BSt15). When the travel route is incorrect, the control unit 33 returns to the route correction (BSt5) and repeats the subsequent processing from the acquisition of surrounding terrain information (BSt3).

When the traveling route is correct, the progress information is transmitted to the portable information processing terminal 87 (BSt16). Next, it is determined whether or not the inspection of the construction area map information is completed (BSt17). If not completed, the control unit 33 repeats the subsequent processing from acquisition of surrounding terrain information (BSt3).

When the inspection of the construction area map information is completed, the control unit 33 stops the traveling carriage 93 (BSt18) and ends the inspection.

Next, the operation of the configuration of the second embodiment described above will be described.

In the water impermeable sheet inspection device 91 according to the second embodiment, the traveling vehicle 35 travels on the water impermeable sheet 15 by the operation of the traveling device 35. The traveling device 35 drives the traveling vehicle 19 by an operator operating an operation panel 85 or the like provided on the traveling vehicle 19. Further, the traveling vehicle 93 may include a transmission/reception device 83 instead of the operation signal from the operation panel 85, and may be driven by an operation signal transmitted from the control device 81 capable of wirelessly transmitting/receiving with the transmission/reception device 83. The traveling trolley 93 travels on the water-impervious sheet 15, and travels while the brush electrode 21 and the pad electrode 23 are in contact with the surface of the water-impermeable sheet 15 at arbitrary positions. The contact position of the brush electrode 21 is acquired in real time by the position information acquisition unit 27 provided on the traveling carriage 93.

When the water blocking sheet 15 has a hole, the detector 31 provided on the traveling carriage 93 is configured to detect the electric current flowing through the hole to the lower layer of the water blocking sheet 15 when passing through the surface of the water blocking sheet 15. Detect changes.

In the water impermeable sheet inspection device 91, a detection signal indicating that a hole has been detected is sent to the control unit 33. When the control unit 33 receives the detection signal, the position information acquisition unit 27 causes the storage unit 29 to store the current position of the brush electrode 21. In the water impermeable sheet inspection device 91, this detection operation and storage are repeated as the traveling vehicle 93 travels. As a result, it is possible to obtain information as to where the holes are formed on the entire surface of the water-blocking sheet 15 that is the inspection target. That is, the water impermeable sheet inspection device 91 can automatically acquire, inspect, and record position information.

The inspection device 91 used in the inspection method for the water-blocking sheet can be suitably used for the inspection on the bottom surface 69 of the industrial waste landfill disposal site 17 or the flat surface 53 such as the step 71.

Further, in the method of inspecting the water-blocking sheet, the construction area map information to be the construction target area is stored in advance. That is, the control unit 33 controls the traveling by using the construction area map information, the position information, and the surrounding terrain information as comprehensive information. In this case, since the construction area map information is stored in advance, it is not necessary to calculate the travel route from the surrounding terrain information. Accordingly, the control unit 33 can determine the traveling route based on the surrounding terrain information, so that the traveling control can be facilitated. Further, it is possible to perform highly reliable automatic traveling while simultaneously determining obstacles acquired by the scan measurement device. As a result, by storing the construction area map information in advance, the traveling determination process can be facilitated and the traveling carriage 19 can be automatically traveled.

Then, in the method of inspecting the waterproof sheet, the current position is acquired by the position information acquisition unit 27 in the construction target area having no information in advance, that is, the unknown construction target area, and at the same time, the traveling cart 19 is provided. The map information of the surroundings is stored as the surrounding terrain information by the scan measuring device. By superimposing the current position on the surrounding terrain information while traveling, the control unit 33 can pass through the unknown construction target area without overlapping traveling and without exception. At this time, obstacles such as walls and holes are also used for traveling determination at the same time based on the image information acquired by the scan measurement device, and the reliability of automatic traveling is enhanced. As a result, the position information and the surrounding terrain information can be acquired for the unknown construction target area, and the traveling carriage 19 can be automatically driven.

Next, a method of inspecting the water-blocking sheet according to the third embodiment will be described.

FIG. 15 is a plan view showing an example of construction area map information with passing points and passing orders. In addition, in the third embodiment, the same members as those shown in the first embodiment are designated by the same reference numerals, and overlapping description will be omitted.
The inspection device 91 according to the third embodiment may have substantially the same configuration as the inspection device 91 according to the second embodiment. The control program stored in the storage unit 29 as the control means for controlling the operation is different from that of the second embodiment.

In the method of inspecting the water-impervious sheet according to the third embodiment, the construction area map information includes information on a plurality of coordinate points that the inspection device 91 passes through, for example, Way Points, and the order of passing the way points. give. Although P1 to P7 are shown as waypoints in FIG. 15, n waypoints are designated over the entire construction area. The positions of these way points P1 to P7... Pn and the order of passage are stored in the storage unit 29.

FIG. 16 is a flowchart showing the inspection procedure of the method of inspecting the water-blocking sheet according to the third embodiment.
In the method of inspecting a water-permeable sheet according to the third embodiment, a traveling route by waypoints is created on a desk in advance before traveling of the inspection device 91 (CSt1). The travel route is stored in the storage unit 29.

The inspection device 91 is carried into the industrial waste landfill site 17, and the traveling carriage 93 is caused to travel on the impermeable sheet 15 stretched on the covering surface 37 by wireless operation using the control device 81 (CSt2).

The detector 31 starts energizing the brush electrode 21 (CSt3).

The control unit 33 determines whether or not all the way points P1 to P7... Pn have been completed in the order designated in advance (CSt4). When the control unit 33 has passed all the way points P1 to P7... Pn, the control unit 33 ends the inspection.

On the other hand, when not passing through all the way points P1 to P7... Pn, the control unit 33 determines the presence/absence of a spark based on the presence/absence of a detection signal sent from the detector 31 (CSt5). If no spark is detected, the traveling vehicle 93 travels by passing the waypoints P1 to P7... Pn in order.

Upon receiving the detection signal from the detector 31, the control unit 33 returns the traveling carriage 93 by 1 m (CSt6). Next, the control unit 33 starts counting the number of sparks (CSt7).

The control unit 33 restarts traveling from the retracted position and reexamines the same location. The re-inspection is repeated until the number of sparks reaches a predetermined number. The number of times of re-inspection is set to 3 times, for example. When the detection signal is sent during the three inspections, the control unit 33 acquires the spark position by the position information acquisition unit 27 and stores the spark position in the storage unit 29 (CSt8).

The control unit 33 also transmits the detection information and the position information to the portable information processing terminal 87 via the transmission/reception device 83 (CSt9).

The control unit 33 repeats the above operation until all the way points P1 to P7... Pn are passed.

In this method of inspecting a water-impervious sheet, coordinate points and the order of passage of the coordinate points are given to the construction area map information. Accordingly, the control unit 33 can easily determine the travel route while sequentially obtaining the coordinate points from the position information. Further, it is possible to easily perform highly reliable automatic traveling while simultaneously determining obstacles acquired by the scan measurement device. As a result, by determining the coordinate points through which the traveling vehicle 19 passes and the order thereof, the traveling determination process can be made easier and the traveling vehicle 19 can be automatically traveled.

Next, a modified example of the third embodiment will be described.

FIG. 17 is a plan view showing an example of construction area map information with passing points.
In the method of inspecting a water-impervious sheet according to this modification, the construction area map information includes a plurality of coordinate points through which the inspection device 91 passes, for example, way points P1 to P7... Pn and the way points P1 to P1. Information is also given regarding the direction of passage through P7... Pn. That is, in the third embodiment, the passing order is stored, whereas in this modification, the passing direction is stored. As a result, the construction area map information includes way points P1 to P7... Pn created by the worker and passage information (trajectory) like a single stroke in which a large number of points that complement these way points are arranged. It will be.

According to the method of inspecting the water blocking sheet according to this modification, the traveling control performed by the control unit 33 can be simplified.

18 is a plan view of an inspection apparatus 103 according to another configuration example in which the pad electrode 23 is provided on the lower surface, and FIG. 19 is a side view of the inspection apparatus 103 shown in FIG.
The inspection device 103 can be a substantially circular traveling carriage 105 provided with four omni wheels 99 on four sides. Further, in this case, the pad electrode 23 can be attached in a substantially circular shape to the lower surface of the traveling carriage 105 in a suspended manner.

According to such an inspection device 103, by rotating the traveling carriage 105 around the central axis, it is possible to easily make a right-angled turn, and to inspect the step 71 and the like more smoothly.

Therefore, according to the water impermeable sheet inspection device and the water impermeable sheet inspection method of the present disclosure, in the perforation detection work of the water impermeable sheet 15, the work labor is reduced and the safety is improved as compared with the conventional work time. Can be shortened.

It should be noted that the above-described embodiment is intended to exemplify the technique of the present disclosure, and thus various changes, replacements, additions, omissions, and the like can be made within the scope of the claims or the scope equivalent thereto.

For example, as the inspection device, at least a traveling carriage, a first electrode such as a flat plate brush electrode or a curved brush electrode curved according to the curved surface of the inspection point, a second electrode such as a flat plate pad electrode or a roll type electrode made of conductive rubber. It can be configured to include a power supply unit and a detector, and the first electrode and the second electrode, the power supply unit, and the detector can be moved by a traveling trolley, and can easily be moved on the water shield sheet. Can be easily inspected. In addition, since the position information acquisition unit is included in this, it becomes possible to acquire information such as the position and detection position of the traveling vehicle.
In addition to the brush structure described above, the configuration of the first electrode 21 may be a shape having a contact surface such as a spatula shape or a spherical shape, and the configuration of the second electrode 23 is the same brush as the first electrode. It may be a clip structure or the like which holds the edge of the sheet or the edge of the waterproof sheet.

Further, for example, when inspecting a vast area, the inspection may be performed by a plurality of inspection devices. In this case, information is shared between the inspection devices, and the inspection area is efficiently and efficiently advanced to prevent inspection omissions.
In addition, the vehicles may travel around the same movement (inspection) range based on the GNSS information.
Further, the position information acquisition system may use a base station or a reference station installed in the vicinity in addition to the GNSS.

11, 91... Inspection device 13... Slope 15... Impermeable sheet 19, 93... Traveling vehicle 21... First electrode (brush electrode)
23... Second electrode (pad electrode)
25... Power supply part 27... Position information acquisition part 29... Storage part 31... Detector 33... Control part 35... Traveling device 37... Cover surface 45... Brush electrode advancing/retreating drive part 47... Antenna 49... Rope 51... Winding device 53... Flat surface 81... Control device 83... Transceiver device 87... Portable information processing terminal 89... Display device 101... Scan measurement device (surrounding instrument)

Claims (21)

A traveling carriage that has a traveling device and travels on a water-blocking sheet stretched on the covering surface;
A first electrode provided on the traveling carriage and in contact with the surface of the water-blocking sheet,
A second electrode provided on the traveling carriage, arranged within a certain distance from the first electrode and in contact with the water-blocking sheet,
A power supply unit that is provided on the traveling carriage and applies a voltage between the first electrode and the second electrode,
A detector that is provided on the traveling carriage and that detects the hole by the change in the electric current when the first electrode passes through the surface of the water shield sheet where the hole is formed,
A water-impermeable sheet inspection apparatus comprising: An inspection apparatus for the water-blocking sheet according to claim 1,
An apparatus for inspecting a waterproof sheet, comprising a position information acquisition unit which is provided on one of the traveling carriage or the first electrode and acquires position information. An inspection apparatus for a water-blocking sheet according to claim 2,
The water impermeable sheet inspection apparatus, wherein the first electrode is provided with an antenna of the position information acquisition unit. An inspection apparatus for the water-blocking sheet according to claim 2,
A storage unit that is provided on the traveling vehicle and stores map information that is a construction target area, the position information, and detection information by the detector,
A control unit which is provided in the traveling carriage and stores the detection information and the position information in the storage unit when the detector detects the hole;
A water-impermeable sheet inspection apparatus comprising: An inspection apparatus for a water-blocking sheet according to claim 4,
The traveling vehicle has a transmission/reception device connected to the control unit,
An apparatus for inspecting a waterproof sheet, comprising: a steering device that is wirelessly connected to the transmitting/receiving device to operate the traveling device to control traveling of the traveling carriage. An inspection apparatus for a water barrier sheet according to claim 5, wherein
A portable information processing terminal wirelessly connected to the control unit via the transmission/reception device and having a display device;
The water impermeable sheet inspection device, wherein the portable information processing terminal can superimpose the detection information and the position information on the map information and display the superimposed information on the display device. It is an inspection apparatus of the impermeable sheet according to any one of claims 1 to 6,
The above-mentioned traveling carriage is provided with a first electrode advancing/retreating drive unit for moving the first electrode in the approaching/separating direction with respect to the traveling carriage in a direction substantially orthogonal to the traveling direction. .. The water impermeable sheet inspection device according to claim 7,
The first electrode advancing/retreating drive unit has a winding device that pays out or winds up the rope,
While the traveling carriage travels on the flat surface along a slope inclined downward from the flat surface, when the traveling is stopped at a predetermined position,
Raising or lowering the slope while sliding the first electrode and the second electrode supported on the end of the rope by unwinding or winding the rope of the winding device to the surface of the impermeable sheet by its own weight. Characteristic water-impermeable sheet inspection device. The water-impermeable sheet inspection device according to any one of claims 1 to 8,
The water-impermeable sheet inspection device, wherein the first electrode is a brush electrode. It is an inspection apparatus of the impermeable sheet according to any one of claims 1 to 9,
The water-impermeable sheet inspection device, wherein the second electrode is a pad electrode. A traveling carriage having a traveling device is caused to travel on the water-blocking sheet stretched on the covering surface,
The first electrode provided on the traveling carriage slidably contacts the surface of the waterproof sheet, and the second electrode provided on the traveling carriage contacts the waterproof sheet within a certain distance from the first electrode. Let
A voltage is applied between the first electrode and the second electrode by a power supply unit provided in the traveling carriage,
In the water-blocking sheet, the hole is detected by a detector provided in the traveling carriage by the change in current when the first electrode passes through the holed surface of the water-blocking sheet. Inspection method. A method for inspecting a water-blocking sheet according to claim 11,
A method of inspecting a water-impervious sheet, comprising: acquiring position information of the traveling carriage and the first electrode by a position information acquisition unit provided on the traveling carriage. A method for inspecting a water-permeable sheet according to claim 12,
A method of inspecting a water-impervious sheet, characterized in that, when the detector detects the hole, the detection information and the position information are stored in a storage unit by a control unit provided in the traveling vehicle. The method for inspecting the water-permeable sheet according to claim 12 or 13,
At the start of the inspection, the position information acquisition unit acquires the position information of the traveling carriage, and records the surrounding topographic information acquired by the scan measurement device as the surrounding topographic information,
The method of inspecting a waterproof sheet according to claim 1, wherein the control unit determines whether the traveling vehicle is traveling based on the position information and the surrounding landform information. The method for inspecting the water-permeable sheet according to claim 14,
Store the construction area map information that is the construction target area in advance,
A method of inspecting a waterproof sheet, wherein the control unit determines whether the traveling vehicle is traveling based on the position information, the surrounding landform information, and the construction area map information. The method for inspecting a water-permeable sheet according to claim 15, wherein
A method of inspecting a waterproof sheet, wherein the construction area map information includes a plurality of coordinate points through which the traveling vehicle passes and a passing order of the coordinate points. A method for inspecting the water-permeable sheet according to any one of claims 11 to 16,
When the hole is detected by the detector, the first electrode is reciprocated again at that position, re-inspection is performed by the change in the current, and when the change in the current is detected again, the A method for inspecting a water-blocking sheet, which comprises a procedure for confirming detection of holes. A method for inspecting the water-blocking sheet according to any one of claims 11 to 17,
The traveling carriage includes a first electrode advancing/retreating drive unit that moves the first electrode in an approaching/separating direction with respect to the traveling carriage in a direction substantially orthogonal to the traveling direction,
The first electrode advancing/retreating drive unit has a winding device that pays out or winds up the rope,
While the traveling carriage travels on the flat surface along a slope inclined downward from the flat surface, when the traveling is stopped at a predetermined position,
A shield which raises and lowers the slope while slidingly contacting the first electrode supported by the end of the rope with the self-weight to the surface of the impermeable sheet by feeding or winding the rope of the winding device. Water sheet inspection method. The method for inspecting a water-blocking sheet according to claim 18,
The first electrode, the width direction orthogonal to the descending and ascending direction is formed to be long,
When the first electrode descends and rises and returns, the traveling carriage travels the width of the first electrode to inspect the impermeable sheet for the next width. Sheet inspection method. A method for inspecting the water-blocking sheet according to any one of claims 11 to 19,
A method of inspecting a waterproof sheet, wherein the first electrode is a brush electrode. A method for inspecting the water-blocking sheet according to any one of claims 11 to 20,
A method of inspecting a waterproof sheet, wherein the second electrode is a pad electrode.

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