JP2020051993A - Inspection system - Google Patents

Abstract

To provide an inspection system capable of securing safety in an inspection of a slope face and improving working efficiency and reliability of the inspection.SOLUTION: An inspection system 1 is constituted of a master machine 9, a slave machine 11, and so on. In the slave machine 11, an electrode brush 35 opposed to an impervious sheet 7, a GNSS receiver 41 for observing a position of the electrode brush 35, and so on are mounted on a frame 37 to be a frame-shaped body and rollers 33 are arranged on the front and back in a moving direction of the electrode brush 35. Further, a traction rope 13 extended in an upper direction of a slope face 3 is connected to the frame 37. In order to inspect water-tightness of the imperious sheet 7, the master machine 9 is arranged on a flat portion 5 of a top end of the slope face 3 and the slave machine 11 is arranged on the slope face 3. The master machine 9 is moved on the flat portion 5 in a lateral direction. The slave machine 11 is moved in a vertical direction along the slope face 3 while being pulled by the master machine 9 by winding up or unwinding the traction rope 13 by a winch 31 installed in the master machine 9.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an inspection system for a seepage control sheet of a disposal site having a slope.

  At the landfill site for waste, water-blocking works using water-blocking sheets are performed. In the water shielding work, a pinhole may be generated at the time of manufacturing the water shielding sheet or laying the site, or a joint failure of the water shielding sheet may occur. The watertightness of the impermeable structure is confirmed by various inspections, and one example is a spark inspection.

  As a spark inspection, after laying the water-impervious sheet on the conductive mat, press the water-impervious sheet with a sheet holding member so that the water-impervious sheet and the conductive mat are in close contact with each other. There is a method in which an electrode brush is disposed on a water-impervious sheet to detect a pinhole. In this method, the electrode brush and the sheet pressing member are manually operated (for example, see Patent Document 1).

  The electrode brush for the spark inspection is a conductor such as brass. If there is a problem with water tightness due to the presence of a defective portion such as a pinhole in the impermeable sheet, the electrode brush acts as an anode, and the conductive layer (conductive mat etc.) on the back of the impermeable sheet acts as a cathode to conduct electricity. The presence of a defective portion can be detected.

Japanese Patent No. 6087656

  However, landfills often have a mortar-shaped shape, so when workers go up and down to inspect slopes, a rope ladder as a work floor or It is necessary to use a main rope or safety belt for working at heights. Therefore, improvements in safety and workability have been demanded.

  As a method of inspecting the slope without the worker going up and down, there is also a method of connecting the electrode brush to the rope and pulling it up from the top, but the impermeable sheet due to unevenness of the slope and temperature shrinkage due to temperature fluctuations In a state where the wrinkles are generated, there is a possibility that the electrode brush may not surely stroke the surface of the water-impervious sheet to be inspected, and the reliability of the inspection remains a question.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an inspection capable of securing safety at the time of a slope inspection and improving work efficiency and reliability of the inspection. Is to provide a system.

  In order to achieve the above-mentioned object, the present invention provides an inspection system for a seepage control sheet of a disposal site having a slope, wherein the master moves laterally on a flat portion at a top end of the slope, and the master includes: A slave unit that is towed by the machine and moves vertically along the slope, wherein the slave unit is provided in front of and behind a detection portion facing the water-impervious sheet and in the movement direction of the detection portion. And a position observing section for observing the position of the detection portion.

  In the present invention, since the slave unit having the detection portion is moved up and down along the slope by being pulled by the master unit which moves laterally on the flat portion at the top end of the slope, There is no need to go up and down the slope. Therefore, safety at the time of slope inspection can be ensured, and work efficiency can be improved. In addition, by providing rollers before and after in the moving direction of the detection part, the surface of the impermeable sheet to be inspected can be scanned by the detection part while the wrinkles of the impermeable sheet are extended by the rollers. Reliability can be improved.

It is preferable that the slave unit has a body in a frame shape, and the roller and the detection unit are connected to the body.
This allows the slave unit to have a minimum weight suitable for pressing the detection portion against the impermeable sheet while maintaining stability during movement.

It is preferable that one end of an intermediary rope extending downward from the slope is connected to the main body, and the other end of the intermediary rope can be operated by a flat portion at a lower end of the slope.
Thereby, even when the slope has unevenness, it is possible to control so that the moving direction of the slave unit does not deviate.

The main unit is connected to one end of a tow rope extending in an upward direction of the slope, and the other end of the tow rope is wound or unwound by a winch provided in the master unit, so that the slave unit Is desirably pulled by the master unit.
Thus, the slave unit can be moved at an appropriate speed in the vertical direction along the slope. In addition, the use of the tow rope reduces the possibility that the water-impermeable sheet on the fore shoulder may be damaged by rubbing, as compared with the case where a wire is used for tow.

It is preferable that one end of the tow rope is connected near a height where the center of gravity of the slave unit is located.
Thereby, the slave unit can be moved in a stable posture, and it is possible to prevent the slave unit from falling during movement.

It is preferable that the detecting portion is an electrode brush for spark inspection, and is attached to the main body so as to contact the water impermeable sheet at a position separated from the roller.
This allows the water-impervious sheet to be stroked by the electrode brush while the water-impervious sheet is pressed by the rollers before and after in the moving direction of the electrode brush, so that the inspection can be reliably performed even when the water-impervious sheet has wrinkles.

A display means for taking in the data of the position observing unit and displaying the inspected range and the defective position of the impermeable sheet may be further provided.
Further, a notifying means for notifying at the time of detecting a defective position of the impermeable sheet may be further provided.
As a result, the operator can easily grasp the inspected range and the defective position of the impermeable sheet.

  Advantageous Effects of Invention According to the present invention, it is possible to provide an inspection system capable of securing safety at the time of a slope inspection and improving work efficiency and inspection reliability.

Diagram showing an outline of the inspection system 1 Diagram showing master unit 9 The figure which shows the slave unit 11 The figure which shows the detection method of a pinhole etc. by the slave unit 11. The figure which shows the detection method of a pinhole etc. by the slave unit 11. Diagram showing inspected range 43 The figure which shows the movement of the master | base_unit 9 and the slave | mobile_unit 11 at the time of an inspection. The figure which shows the state which carried the slave unit 11 on the slope 47 of the master unit 9. Figure showing an example of another electrode brush The figure which shows the movement of the master | base_unit 9 and the slave | mobile_unit 11 at the time of an inspection.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing an outline of the inspection system 1. FIG. 2 is a diagram showing the master unit 9, and is a view of the master unit 9 in the direction of arrow A shown in FIG. FIG. 3 is a diagram illustrating the slave unit 11. In FIG. 3, the slope 3 is shown horizontally.

  As shown in FIG. 1, the landfill site 2 is formed by excavating the ground in a mortar shape, and has a flat bottom 4, a slope 3 provided around the bottom 4, and a top end of the slope 3. And a flat portion 5 provided. In the landfill site 2, a plurality of slopes 3-1 and 3-2 are provided, and a flat portion 5 is provided at the top of each of the slopes 3-1 and 3-2.

  A water-blocking sheet 7 is laid on the inner side surface of the landfill 2, that is, the bottom 4, the slope 3, and the flat portion 5. The water-blocking sheet 7 has a conductive layer on the back surface or a conductor on the lower surface. Further, a protection sheet 19 is put on the surface of the water-impervious sheet 7 at the shoulder near the boundary between the flat part 5 and the slope 3.

  The inspection system 1 is a system for inspecting the watertightness of the impermeable sheet 7 laid on the slope 3 of the landfill 2. The inspection system 1 includes a master unit 9, a slave unit 11, and the like.

  As shown in FIG. 2, the master unit 9 includes a gantry 21, a traveling device 23, a generator 25, a GNSS measuring machine terminal 27, a reel 29, a winch 31, and the like. The gantry 21 is a main body of the master device 9. The traveling device 23 is, for example, an endless track, and is provided below the gantry 21. A commercially available crawler carrier may be used as the gantry 21 and the traveling device 23.

  The generator 25, the GNSS measuring machine terminal 27, the reel 29, and the winch 31 are mounted on the gantry 21. The generator 25 is a generator for a spark tester main body 39 (FIG. 3) described later, and one end of the power cord 15 is connected thereto. The reel 29 winds up the power cord 15. The GNSS measuring device terminal 27 is a measuring terminal for a GNSS receiver 41 (FIG. 3) described later. The winch 31 is used for moving the slave unit 11, and one end of the tow rope 13 is connected to the winch 31.

  Master device 9 further includes a ground wire (not shown), display means, and notification means. The ground wire is grounded to the end of the water-impervious sheet 7 to be inspected. The display means displays the inspected range and the defective position on the water impermeable sheet 7. The notifying unit notifies when a faulty position is detected.

  As shown in FIG. 3, the slave unit 11 includes a gantry 37, a roller 33, an electrode brush 35, a tester main body 39, a GNSS receiver 41, and the like. The gantry 37 is a main body of the slave unit 11 and has a frame shape. Although not shown in FIG. 3, the corners of the gantry 37 are chamfered so as not to damage the impermeable sheet 7.

  The electrode brush 35 is a detection part in a spark inspection, and is, for example, a brush having a uniform bristle length. The electrode brush 35 is arranged so that the planted surface faces the water-impermeable sheet 7, and is connected to the gantry 37 such that the hair portion contacts the water-impermeable sheet 7 below the pedestal 37.

  The electrode brush 35 may be rigidly connected to the gantry 37 or may be suspended from the gantry 37. The electrode brush 35 is desirably detachable from the gantry 37.

  The rollers 33 are not only a means for pressing the water-impervious sheet 7 but also a traveling means for the slave unit 11, and are provided before and after the moving direction of the electrode brush 35 (the left-right direction in FIG. 3). The roller 33 desirably has at least the same width as the electrode brush 35. Further, the diameter of the roller 33 is assumed to be greater than the height of the wrinkles 45 (FIG. 1 and the like) of the impermeable sheet 7. The roller 33 has a wheel portion made of, for example, an insulating member made of vinyl chloride, and a rotating shaft (not shown) made of steel. However, if the separation between the wheel portion of the roller 33 and the electrode brush 35 is sufficiently ensured and there is no possibility of conduction, the wheel portion may be made of steel.

  The roller 33 has a rotating shaft (not shown) connected to a lower portion of the gantry 37. The smaller the distance between the two rollers 33 is, the easier it is to press the water-impervious sheet 7, but the larger the rollers 33 are, the better the stability of the slave unit 11 is. Therefore, when determining the position of the roller 33, the degree of pressing of the water-impervious sheet 7 and the stability of the slave unit 11 are taken into consideration.

  The tester main body 39 and the GNSS receiver 41 are mounted on the gantry 37. The testing machine main body 39 is a testing machine for spark inspection, and is connected to the power cord 15 extending from the reel 29 of the master machine 9. The tester main body 39 is connected to the electrode brush 35 by a cord (not shown).

  The GNSS receiver 41 is a position observation unit that observes the position of the electrode brush 35. As shown in FIGS. 1 and 5, the GNSS receiver 41 is preferably located directly above the electrode brush 35 in a state where the slave unit 11 is installed on the slope 3.

  One end of the intermediary rope 17 is connected to a lower side (left side in FIG. 3) of the slope 3 of the gantry 37. The intermediary rope 17 is connected to two places of the gantry 37, is united on the way, and extends downward of the slope 3 as shown in FIG. The other end of the interposition rope 17 is operable at the bottom 4 which is a flat portion at the lower end of the slope 3.

  The end of the tow rope 13 extending from the winch 31 of the base unit 9 is connected to the upper side (the right side in FIG. 3) of the slope 3 of the gantry 37. The tow rope 13 is connected near the height where the center of gravity of the slave unit 11 is located. In addition, as shown in FIG. 1, it is desirable that the towing rope 13 is connected to a position where the tow rope 13 does not rub the shoulder while the slave unit 11 is installed on the slope 3.

  Next, an inspection method by the inspection system 1 will be described. 4 and 5 are diagrams illustrating a method of detecting a pinhole or the like by the slave 11, wherein FIG. 4A illustrates a state in which the slave 11 is located above the slope 3, and FIG. The state where the slave unit 11 is located below the slope 3 is shown.

  In order to inspect the watertightness of the impermeable sheet 7 on the slope 3 of the landfill disposal site 2 using the inspection system 1, as a preparation for the inspection, first, as shown in FIGS. The master unit 9 is arranged on the flat part 5 at the top. Master device 9 can be moved laterally (in the direction of arrow C shown in FIG. 4A) by traveling device 23.

  The slave unit 11 is arranged on the slope 3. The child device 11 is pulled by the parent device 9 by winding or unwinding the tow rope 13 by the winch 31 of the parent device 9, and is pulled up and down along the slope 3 (arrows shown in FIG. 4A). D direction).

  Further, the cathode of the tester main body 39 is connected to a conductive layer (or a conductor) (not shown) below the water shielding sheet 7.

  In order to perform the inspection, a voltage is applied between the electrode brush 35 and the conductive layer (or the conductor) using the tester main body 39, and in a state where the electrode brush 35 is in contact with the impermeable sheet 7, The child device 13 is taken up or unwound to move the child device 11 in the vertical direction along the slope 3.

  When the slave unit 11 is moved along the slope 3, the electrode brush 35 scans on the impermeable sheet 7. At this time, if there is no defect such as a pinhole or a joint failure in the water impermeable sheet 7, the electrode brush 35 and the conductive layer (or conductor) are insulated by the water impermeable sheet 7 and no discharge occurs. If the impermeable sheet 7 is defective, it is not insulated and discharge occurs. As described above, by detecting the discharge by bringing the electrode brush 35 into contact with the impermeable sheet 7, the presence or absence of a defect is detected.

  In the inspection system 1, the range scanned by the electrode brush 35 with the movement of the slave 11 is the range that has been inspected. For example, when the slave unit 11 moves from the position illustrated in FIG. 4A to the position illustrated in FIG. 4B, the range 43 illustrated in FIG.

  When the slave unit 11 is moved along the slope 3, the upper roller 33 a and the lower roller 33 b of the slope 3 of the slave unit 11 press the water barrier sheet 7 as shown in FIG. 5. Accordingly, the wrinkles 45 of the water-impervious sheet 7 are pressed so as not to hinder the scanning by the electrode brush 35, and the child device 11 does not get caught or run on the wrinkles 45.

  When moving the slave unit 11 along the slope 3, an operator operates the other end of the intermediary rope 17 at the bottom 4 at the lower end of the slope 3. Accordingly, even when the slope 3 has an irregular surface, the moving direction of the slave unit 11 is not deviated by being dragged by the irregular surface.

  When moving the slave unit 11 along the slope 3, the position of the electrode brush 35 specified by the GNSS receiver 41 is acquired by the GNSS measuring device terminal 27. Then, the inspected range 43 obtained based on the trajectory data of the electrode brush 35 and the width data of the electrode brush 35 acquired by the GNSS measuring instrument terminal 27 and the defect position detected by the electrode brush 35 are stored in the parent device. It is displayed on display means (not shown) provided in the device 9. Further, when a defective position is detected by the electrode brush 35, a notifying unit (not shown) of the master unit 9 gives a notification by a warning sound. The not-shown notifying means may mark the defective position detected by the electrode brush 35 with paint or the like.

  FIG. 6 is a diagram showing the inspected range 43, and FIG. 7 is a diagram showing movements of the master unit 9 and the slave unit 11 at the time of inspection. FIG. 8 is a diagram illustrating a state where the slave 11 is placed on the slope 47 of the master 9.

  As shown in FIG. 6, the inspection of the impermeable sheet 7 on the slope 3 of the landfill 2 is performed so that the inspected area 43 partially overlaps the adjacent inspected area 43. When the width of the electrode brush 35 is about 90 cm, the width of the overlap is preferably about 15 cm.

  In order to inspect the impermeable sheet 7 so that the inspected areas 43 partially overlap each other, first, the master unit 9 is arranged at one end of the flat portion 5 as shown in FIG. Then, the slave unit 11 is reciprocated up and down along the slope 3 as shown by the solid arrow. Thereafter, the operation of moving the parent device 9 and the child device 11 in the horizontal direction as indicated by the white arrow and the operation of reciprocating the child device 11 in the vertical direction along the slope 3 are repeated.

  In order to move the parent machine 9 and the child machine 11 in the horizontal direction on the flat part 5, as shown in FIG. Is placed on the slope 47. If the master unit 9 is moved in the horizontal direction in this state, the slave unit 11 can be moved in the horizontal direction simultaneously with the master unit 9.

  When the slope 3 of the landfill 2 is composed of a plurality of steps 3-1, 3-2, etc., after the inspection of the slope 3 of one step is completed, the flat part 5 of the next step is closed. The machine 9 and the child machine 11 are moved to inspect the slope 3 at the next stage. The inspection of the water-blocking sheet 7 on the flat portion 5 can be easily performed by manually moving the electrode brush.

  As described above, in the present embodiment, the slave unit 11 having the electrode brush 35 is pulled by the master unit 9 that moves in the lateral direction on the flat part 5 at the top end of the slope surface 3, and thus the slave unit 11 is moved to the slope surface 3. The worker does not need to go up and down the slope 3 because it moves up and down. Therefore, safety at the time of the inspection of the slope 3 can be ensured, and work efficiency can be improved. Further, by providing the rollers 33 before and after in the moving direction of the electrode brush 35, the surface of the water-impervious sheet 7 is scanned by the electrode brush 35 while the wrinkles 45 of the water-impervious sheet 7 to be inspected are extended by the rollers 33. Therefore, the reliability of the inspection can be improved.

  In the present embodiment, the pedestal 37 of the slave unit 11 has a frame shape, and the roller 33 and the electrode brush 35 are connected to the pedestal 37. For this reason, it is possible to keep the slave unit 11 at a minimum weight suitable for pressing the electrode brush 35 against the impermeable sheet 7 while maintaining stability during movement.

  In the present embodiment, one end of the tow rope 13 is connected to the mount 37 of the slave unit 11, and the other end of the tow rope 13 is wound or unwound by the winch 31 provided on the master unit 9, thereby forming the child unit. Machine 11 is pulled by master machine 9. Thereby, the slave unit 11 can be moved up and down along the slope 3 at an appropriate speed. In addition, by using the tow rope 13 to cover the protective sheet 19 on the fore shoulder, the possibility that the water impermeable sheet 7 on the fore shoulder is damaged by rubbing is lower than in the case where a wire is used for towing. Further, by connecting one end of the tow rope 13 to a position near the height where the center of gravity of the slave unit 11 is located, the slave unit 11 can be moved in a stable posture, and the fall of the slave unit 11 during movement can be prevented. . If the tow rope 13 is connected to the vicinity of the height at which the center of gravity of the slave unit 11 is located, the friction between the tow rope 13 and the prosthesis during the movement of the slave unit 11 is reduced as compared with the case where the tow rope 13 is connected to a position lower than the center of gravity. It can also be made less likely to occur.

  The inspection system 1 captures the data of the GNSS receiver 41 and displays the inspected range 43 and the defective position of the water-impermeable sheet 7, a display means for notifying when the defective position of the water-impermeable sheet 7 is detected, and Having. Therefore, the operator can easily grasp the inspected range 43 and the defective position of the impermeable sheet 7.

  In the present embodiment, an electrode brush 35 having a uniform bristle length is used as a detection portion, but the detection portion is not limited to this.

  FIG. 9 is a diagram illustrating an example of another electrode brush. The electrode brush may be one in which the length of the bristle is changed stepwise as shown in FIG. 9 (a), or may be a roll as shown in FIG. 9 (b). . By using the electrode brush having the shape as shown in FIG. 9, the followability of the slope 3 to irregularities can be enhanced, and the defective position can be detected even when there is irregularity.

  Further, in the present embodiment, the slave unit 11 is reciprocated up and down at the same position of the water-blocking sheet 7 to scan each range 43 twice by the electrode brush 35, but the outward path and the return path of the slave unit 11 are the same. The position does not have to be.

  FIG. 10 is a diagram illustrating movements of the master unit 9 and the slave unit 11 at the time of inspection. In the example shown in FIG. 10, first, the master unit 9 is arranged at one end of the flat portion 5 at the top end of the slope 3. Then, the slave unit 11 is moved downward along the slope 3 as indicated by a solid arrow. Next, after moving the parent machine 9 on the flat part 5 and moving the child machine 11 sideways near the bottom part 4 as shown by a white arrow, the child machine 11 is moved to the slope 3 as shown by a solid arrow. And move it upwards. Then, the operation | movement which moves the base | mobile_unit 9 and the child | mobile_unit 11 to the horizontal direction on the flat part 5, the operation | movement which moves the child | mobile_unit 11 downward along the slope 3, and the parent | base_unit 9 on the flat part 5 The operation of moving the child device 11 in the horizontal direction near the bottom 4 and the operation of moving the child device 11 upward along the slope 3 are repeated. In the example shown in FIG. 10, the range 43 a and the range 43 b are scanned once by the electrode brush 35.

  Also in this case, when moving the master unit 9 and the slave unit 11 in the horizontal direction on the flat part 5, it is desirable to put the slave unit 11 on the slope 47 attached to the master unit 9 as shown in FIG. . Since the handset 11 is relatively lightweight, when the handset 11 is moved in the lateral direction near the bottom 4, the handset 11 can be moved manually.

  In the present embodiment, the traveling of the slave unit 11 is assisted by using the intermediary rope 17, but the traveling direction of the slave unit 11 is assisted by indicating the traveling direction on the slope 3 using a surveying laser or the like. Is also good. Further, the roller 33 may be divided into a plurality of shafts to deal with unevenness of the slope 3 or a suspension may be provided to press the roller 33 against the slope 3.

  Further, it is not essential to provide the power cord 15 for connecting the generator 25 of the master unit 9 and the tester main body 39 of the slave unit 11. The generator 25 and the power cord 15 may be omitted, and a battery mounted on the slave 11 may be used as a power source of the tester main body 39.

  The preferred embodiment according to the present invention has been described with reference to the accompanying drawings, but the present invention is not limited to this example. It is obvious to those skilled in the art that various changes or modifications can be made within the scope of the technical idea disclosed in the present application, and these naturally belong to the technical scope of the present invention. I understand.

1 ... Inspection system 2 ... Landfill site 3, 3-1, 3-2 ... Slope 4 ... Bottom 5 ... Flat portion 7 ... Waterproof sheet 9 ... Parent Machine 11 ... Slave device 13 ... Towing rope 15 ... Power cord 17 ... Intermediate rope 19 ... Protective sheet 21, 37 ... Stand 23 ... Traveling device 25 ... Generator 27 GNSS measuring machine terminal 29 Reel 31 Winch 33, 33a, 33b Roller 35 Electrode brush 39 Testing machine main body 41 GNSS receiver 43 … Range 45 …… Wrinkle 47 ……… Slope

Claims (8)

An inspection system for a seepage control sheet of a disposal site having a slope,
A master unit that moves horizontally on a flat part at the top of the slope,
A slave unit that is pulled by the master unit and moves vertically along the slope;
With
Inspection characterized in that the slave unit has a detection portion facing the water-impermeable sheet, rollers provided before and after in the moving direction of the detection portion, and a position observing section for observing the position of the detection portion. system.   The inspection system according to claim 1, wherein the slave unit has a main body in a frame shape, and the roller and the detection portion are connected to the main body.   The one end of the interposition rope extending downward of the slope is connected to the main body, and the other end of the interposition rope can be operated by a flat portion at a lower end of the slope. Inspection system.   The main unit is connected to one end of a tow rope extending in an upward direction of the slope, and the other end of the tow rope is wound or unwound by a winch provided in the master unit, whereby the slave unit is provided. The inspection system according to claim 2 or 3, wherein the inspection system is pulled by the master unit.   The inspection system according to claim 4, wherein one end of the tow rope is connected near a height at which a center of gravity of the slave unit is located.   The said detection part is an electrode brush for spark inspections, It is attached to the said main body so that it may contact the said water-impervious sheet in the position spaced apart from the said roller, The Claims any one of Claim 2 to 5 characterized by the above-mentioned. The inspection system according to 1.   The inspection system according to any one of claims 1 to 6, further comprising a display unit that acquires data of the position observation unit and displays an inspected range and a defective position of the impermeable sheet. .   The inspection system according to any one of claims 1 to 6, further comprising a notification unit configured to notify when a defective position of the impermeable sheet is detected.

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