JP3665977B2 - Landfill management system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the management of landfills carried into landfills.
[0002]
[Prior art]
Conventionally, landfill histories of landfills are created at landfills such as final disposal sites for waste. In this method, landfills carried in trucks, etc. are designated as pre-sorted locations, and landfills are recorded on the designated road, leaving a landfill history. It was.
[0003]
However, the conventional method has the following problems.
<I> If the landfill classification is made fine, the landfill operation becomes complicated, so that the landfill classification becomes rough and an accurate landfill history cannot be kept.
<B> It is difficult to grasp the capacity when the landfill is brought in, and it is difficult to accurately grasp the amount of landfill because the volume of the landfill is reduced due to consolidation settlement after the landfill and decomposition of the components in the landfill. .
<C> In order to accurately grasp the amount of landfill, it is necessary for a person with specialized knowledge to perform it frequently, which requires a lot of time and cost.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to easily obtain the landfill history, landfill amount, or landfill remaining amount of a landfill.
[0005]
[Means for Solving the Problems]
The present invention relates to a landfill management system for landfills that fills landfills, and a landfill height detection device for detecting the landfill height of landfills carried into the landfills, and an input for inputting the type of the landfill and the date and time of delivery. A landfill management system comprising an apparatus and a landfill management data processing system for creating a landfill history of a landfill in a landfill or obtaining a landfill amount and a landfill remaining amount, or
In the landfill management system, a landfill height management device is attached to a slope of a landfill and a gas vent pipe, or a landfill management system, or
In the landfill management system, the landfill height detection device has a visible scale indicating the height of the landfill, or the landfill management system, or
In the landfill management system, the landfill height detection device includes a plurality of electrodes arranged in the height direction of the landfill, and applies a voltage between the electrodes to measure the position of the landfill that has been carried in. Or landfill management system, or
In the landfill management system, the water leakage detection electrode is arranged in a mesh shape near the water shielding sheet, and an internal electrode and an external electrode for applying voltage to the inside and outside of the landfill are provided. The landfill management system is characterized by detecting the water leakage by measuring the distribution.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<B> Overview of landfill management system The landfill management system integrates data such as quality and quantity (volume and weight), landfill location, date and time of landfill 3 carried into landfill 1 Record and display changes in landfill amount and remaining landfill amount, and create landfill history of what landfill 3 was brought to landfill 1 and where it was landed, or calculate landfill amount and remaining landfill amount In the system that records and displays such information.
[0007]
As shown in FIG. 1, the basic block of the landfill management system includes an input device 10 for inputting data such as the type, weight or capacity of the landfill 3 when the landfill 3 is carried in, and the date and time of carry-in, and the landfill depth and the like. The landfill height detection device 20 that measures the position of the landfill 1 and processing these data to create landfill history such as landfill location, date, capacity, type, weight, etc., or data processing for obtaining landfill amount and landfill remaining amount The apparatus 31 includes a landfill management data processing system 30 having a recording device 32 for recording them and a display device 33 for displaying them.
The operating environment of the landfill management system is, for example, a personal computer of PC 98, Ver. The operating system of 3.1 can be used, and the software tree includes, for example, a landfill condition setting 35, a landfill plane graphic display 36, a landfill management table display 37, a landfill time series graph, as shown in FIG. Display 38 is arranged, and as condition settings, for example, disposal site information such as name, capacity landfill start date and time, disposal site shape and block shape, height-corresponding electrode number and capacity block information, landfill judgment reference value, etc. There are landfill resistance values.
[0008]
<B> Landfill height detection device The landfill height detection device 20 grasps the landfill position of the landfill 1 visually, for example, as shown in FIG. A display target 21 in which the depth of the landfill surface 4 of the landfill 3 can be easily visually observed is disposed at an appropriate position (a gap that is within a necessary plane resolution). In order to grasp the state of landfill, for example, the landfill 1 is visited at a frequency of once / day, and the landfill depth of each display target 21 is read. The read data is input to the landfill management data processing system 30.
[0009]
In addition, the landfill height detection device 20 electrically grasps the landfill position of the landfill 1 as shown in FIG. 4, for example, and is three-dimensionally positioned on the slope 2 of the landfill 1 or an appropriate position in the landfill. The measurement electrode 22 is disposed on the surface, and at least one current electrode 23 is disposed at an appropriate position in contact with the landfill 3. It is determined whether the measurement electrode 22 is embedded by applying a voltage between the current electrode 23 and each measurement electrode 22 and measuring the flowing current. When the measurement electrode 22 is embedded, the landfill 3 passes a current, so that a current flows between the current electrode 23 and the measurement electrode 22. By detecting the presence or absence of this current, it is possible to determine whether the measurement electrode 22 is buried, and the landfill height can be determined from the electrode installation position.
[0010]
If the landfill height at each measurement position is known, the landfill capacity can be estimated from the measurement pitch and the shape of the landfill 1. By periodically performing this measurement, it is possible to know the transition of landfill status and which place was reclaimed at what time. Usually, since the landfill 3 that has been carried in is landed immediately after being carried in without being temporarily placed, the landfill time coincides with the carry-in time. For this reason, if the landfill period of each landfill location is known, it can be understood from what date and time the landfill 3 was carried in and where the landfill 3 carried in was landed.
[0011]
Hereinafter, an embodiment using a display target will be described with reference to the drawings.
<A> Display Target Placement As shown in FIGS. 5 to 6, the display target 21 is placed using the slope 2 of the landfill 1, the gas vent pipe 41, and the like. As shown in FIGS. 7 to 10, the display target 21 has a vertical distance from the bottom surface 5. If the scale immediately after the display target 21 is buried is read, the numerical value is the landfill depth of the display target installation position. It becomes. The scale of each display target 21 is read, and the read data is input to the landfill management data processing system 30. The landfill management data processing system 30 grasps the landfill status of the entire landfill from the input data, and grasps the place where the landfill has progressed, the amount of landfill, and the date and time compared with the state when it was previously input. As long as there is no storage place for landfill 3 in the landfill, landfill 3 brought in within that time should have been landfilled in a place where landfill has progressed within a certain time. Create A leachate collecting pipe 43 is disposed at the bottom of the landfill 1, and a filter material 42 such as crushed stone and a gas vent pipe 41 are disposed above it. In addition, a deadline dam 6 that partitions the landfill 1 is provided.
[0012]
<B> The defensive range landfill capacity of the display target can be calculated although it is discrete by providing a planar defensive range for each display target 21. For example, when the display targets 21 are arranged every 10 m, the defensive range of one display target 21 is 10 m × 10 m, that is, 100 square meters. If the display target 21 having a scale of 10 cm is buried, the entire defensive range is 10 legislations. m is considered buried. In this case, the resolution in the height direction is 10 cm. If the number of display targets 21 is increased, the resolution in the planar direction increases, but an optimum arrangement of the display targets 21 is designed in consideration of the required accuracy and landfill plan. The remaining landfill amount can be easily calculated by subtracting the remaining landfill amount at the time of measurement from the landfill capacity when full.
[0013]
<C> Landfill area When the landfill area is divided into separate landfill areas, for example, when landfill areas are divided for each type of landfill 3 and the landfill work is carried out in parallel, the same management is performed for each broadly divided area. By doing so, the same effect can be obtained.
[0014]
<D> Arrangement of Display Target on Slope The display target 21 is installed on the slope 2 as shown in FIGS. 6 to 8 and 11. The bottom of the display target 21 is fixed by a bottom fixing structure 24. The bottom fixing structure 24 is made of, for example, stainless steel, and is fixed to the display target 21 with a stainless bolt. When the bottom surface 5 sinks, it is installed so as to sink according to the sinking. In this way, by measuring the sinking amount of the display target 21 based on the surveying reference point or the like, the sinking situation of the landfill bottom surface 5 can also be grasped and the landfill height can be corrected. Moreover, it is sufficient to measure the display target settlement amount from time to time in accordance with the settlement situation. The scale of the surface is described so as to indicate the vertical distance when installed on the slope 2 in consideration of the slope of the slope. The slope 2 is fixed so that it can be moved somewhat up and down by a target press band 26 such as a belt. Especially when there is a water-impervious sheet 44 as in the final disposal site, a protective material 25 such as a non-woven fabric is laid under the sheet so as not to damage the sheet, and the display target 21 is installed thereon, and the same as the impermeable sheet 44. The display target 21 is fixed by a method in which the display target 21 and the protective material 25 are simultaneously pressed from both sides, and both ends are fixed to the water shielding sheet 44 of the landfill 1 by heat welding 27 or the like.
[0015]
<E> Arrangement of Display Target on Gas Vent Pipe As shown in FIGS. 6, 9, 10, and 12, the display target 21 is arranged on the gas vent pipe 41. The bottom of the display target 21 is fixed by a bottom fixing structure 24. In the case of the final disposal site, the display target 21 is embedded in the water shielding sheet protective layer. In the unlikely event that the bottom sinks due to the loading load of the landfill 3, the display target 21 is also set so as to be dragged by the sinking. By doing so, by measuring the sinking amount of the target 21 based on the surveying reference point or the like, the sinking situation of the landfill bottom surface 5 can also be grasped and the landfill height can be corrected. In addition, it is sufficient to measure the target settlement amount occasionally according to the settlement situation. A vertical distance from the landfill start position or the like is entered on the surface of the target 21, and when it is installed in the gas vent pipe 41, it is installed by adding sequentially as the gas vent pipe 41 is added. The degassing pipe 41 and the target 21 are fixed with a target pressing band 26 through a protective material 25 such as a non-woven fabric so as to move slightly in the vertical direction so that the target 21 can follow the ground subsidence. .
[0016]
<F> Overall system FIG. 13 is a block diagram of the entire system. The landfill 3 carried into the landfill 1 is first checked for the type and weight of the carry-in at the landfill entrance, and the data of the type 11, the date / time 12 and the weight 13 is input to the carry-in management system 15 as an input device. input. When the landfill area is divided and landfilled simultaneously, the landfill area 14 is further input. There are two ways to input: a method in which a person confirms and enters a voucher that has been entered in another location in advance, a method that uses a card automatically, and the weight is measured on the spot using a track scale. There is a method that is automatically captured. The display target number 201 and the value of the landfill depth scale 202 are input to the landfill depth input device 203 which is the landfill height detection device 20. The data input here is sent to the landfill management data processing system 30, where the landfill status and the carry-in data are combined to sort out which landfill 3 and how much landfill 3 has been landfilled. And create a landfill history. In addition, the current amount of landfill and the remaining amount of landfill are obtained. This is recorded in a database so that it can be retrieved and displayed whenever necessary.
[0017]
Below, the Example by an electrical method is described using drawing.
<A> Landfill management system using electrodes The measurement electrode 22 for measuring the landfill depth is installed using the slope 2 of the landfill 1 or the vent pipe 41 as shown in FIGS. The current electrode 23 is installed in at least one place in the protective soil of the bottom surface 5. The landfill depth is measured by applying a voltage between the current electrode 23 and each landfill depth measuring electrode 22 and measuring the ground resistance of the landfill depth measuring electrode 22 from the flowing current value according to Ohm's law. It is judged from this ground resistance value whether or not the electrode is buried (in the experiment, it is confirmed that the ground resistance is 200 kΩ or less when the electrode is buried). The landfill height is estimated from the installation height. By performing this measurement at each installation position, the landfill status of the entire landfill is grasped. On the other hand, unless there is a storage place for the landfill 3 to be carried into the landfill 1 in the landfill, the landfill 3 carried in that time is buried in a place where the landfill has progressed within a certain time. It should be. Normally, no reclaimed land is made in the landfill 1, and the landfill 3 that has been carried in is reclaimed in almost no time. For this reason, the landfill 3 carried in within the period in which the landfill has progressed is buried in the place where the landfill has progressed during that time. From this relationship, a landfill history is created that indicates when and where the landfill 3 carried in is landed. Data such as the type, weight or capacity of the landfill 3 that has been carried in, and the date and time of carry-in are taken in and recorded by the carry-in management system, and the landfill management data processing system 30 takes in from the carry-in management system through the interface as necessary. .
[0018]
<B> The defensive range landfill capacity of the measurement electrode is calculated as a discrete value by providing a landfill height and a planar defensive range for each landfill height measurement electrode 22. For example, assuming that the landfill height measuring electrode 22 is installed every 3 m in height and every 10 m × 10 m in plan view, the defensive range of this electrode is 3 m × 10 m × 10 m, 300 cubic meters. This landfill amount is the resolution in this case. If the number of electrodes is increased, the resolution will increase, but the optimum electrode arrangement will be designed in consideration of the required accuracy and landfill plan. The remaining landfill amount can be easily calculated by subtracting the remaining landfill amount at the time of measurement from the landfill capacity when full. When the bottom surface 5 of the landfill 1 sinks, the landfill capacity increases by the amount of settlement. Therefore, in the landfill 1 where settlement is expected, a sinkage meter is installed at an appropriate position. Is measured, and the filling capacity is corrected based on the measurement result and the shape of the landfill 1 and the remaining landfill is corrected.
[0019]
<C> Arrangement of measurement electrode on degassing pipe and slope When landfill height measuring electrode 22 is arranged on degassing pipe 41 or the like, it is sequentially installed according to the extension of degassing pipe 41. The electrode is fixed to the side surface of the filter material 42 wound around the outside of the gas vent pipe 41 via an insulator so as not to be electrically guided to the filter material. When the slope 2 is the water-impervious sheet 44, the sheet and the electrode similar to the water-impervious sheet 44 are fixed in advance, and the sheet is fixed to the sheet fixed to the electrode and the water-impervious sheet 44 on the slope 2 by welding.
[0020]
Below, the Example combined with the water leak detection system is described using drawing.
<A> Water leakage detection system The water leakage detection system (for example, refer to Japanese Patent Publication No. 6-63901) has an internal electrode 52 and an external electrode 53 installed inside and outside the landfill 1 and applies a voltage between them to flow current. Thus, a potential distribution is generated in the vicinity of the water shielding sheet 44, and the generated potential distribution is captured by the water leakage detection electrode 51 installed in the vicinity of the water shielding sheet 44. By detecting the distortion of the potential distribution (centered around the hole) generated by the current flowing in and out, the presence and position of the hole in the water shielding sheet 44 is detected. For this reason, the water leakage detection system has the internal electrode 52 and the external electrode 53 installed inside and outside the landfill 1, and the water leakage detection electrode 51 is installed in a mesh shape on the water shielding sheet 44 on the bottom surface 5 and the slope 2. . In addition, a function of flowing a current between the internal electrode 52 and the external electrode 53 and measuring the flowing current, a function of measuring the voltage (potential) of each water leakage detection electrode 51, that is, a function of measuring the installation resistance of each electrode. Have.
[0021]
<B> Landfill Management System Combined with the Water Leakage Detection System The landfill management system measures the voltage (potential difference) of each water leak detection electrode 51, the function of flowing current between the internal electrode 52 and the external electrode 53 of the water leak detection system. Make effective use of the functions to be performed. Examples of electrode arrangement in this case are shown in FIGS. The water leakage detection electrode 51 can also be used as the measurement electrode 22 for measuring the landfill height. Further, the internal electrode 52 of the water leakage detection system can also be used as the current electrode 23. The function of this landfill management system is the same as that of the embodiment of the landfill management system using electrodes.
[0022]
<C> Since the measurement of the water leakage detection system is normally performed once a day (in the night), even if the function of the water leakage detection system is used for landfill management during the landfill operation (daytime), There is no influence, and a system with high utilization efficiency can be obtained by combining both functions.
[0023]
<D> Overall System FIG. 18 shows a block diagram of the entire system including water leakage detection. It has a carry-in management system 15 for inputting the type, weight, date of carry-in, etc. of the landfill 3 such as carried-in garbage, and the carry-in management system 15 can output a carry-in history 71 of the garbage, and data via the interface Data is input to the processing system 60. Further, the landfill position of the landfill 3 is measured by the measurement electrode 22 and input to the data processing system 60. Based on these input data, the data processing system 60 uses the landfill management software 61 to perform the landfill history 73 regarding the date and time of delivery, type, weight, landfill amount, landfill location, etc., and the current state of landfill such as landfill amount and residual landfill amount. 74 is created. The data processing system 60 obtains the potential distribution near the water shielding sheet 44 based on the signal from the water leakage detection electrode 51, obtains the presence or position of water leakage by the water leakage detection software 62, and creates the water leakage inspection history 72.
[0024]
【The invention's effect】
The present invention can obtain the following effects.
<I> The landfill history, landfill amount and remaining landfill can be easily obtained.
<B> Even if the landfill is compacted and the components in the landfill are decomposed after the landfill, the amount of landfill can be accurately grasped.
<C> By electrically measuring the landfill position, the amount of landfill can be grasped almost automatically.
[Brief description of the drawings]
[Figure 1] Overview of landfill management system [Figure 2] Software tree of landfill management system [Figure 3] Side view of landfill with display target [Figure 4] Side view of landfill with measurement electrode [ 5 is a plan view of a landfill where display targets are arranged. FIG. 6 is a cross-sectional view taken along line VV in FIG. 5. FIG. 7 is a cross-sectional view taken along VI-VI in FIG. FIG. 9 is a cross-sectional view of VIII-VIII in FIG. 6. FIG. 10 is an enlarged view of a display target placed in a gas vent pipe. FIG. 11 is a fixed portion of a display target placed in a slope. Fixing part of display target arranged in extraction tube [Fig. 13] Landfill management system diagram using display target [Fig. 14] Plan view of landfill where measurement electrode is arranged [Fig. 15] Sectional view of XIV-XIV in Fig. 14 FIG. 16 is a plan view of a landfill where water leakage detection electrodes are arranged. 17 is a cross-sectional view of XVI-XVI in FIG. 16. FIG. 18 is a landfill management system diagram having a water leakage detection function.

Claims (5)

In the landfill management system for landfills where landfills are landfilled,
A landfill height detection device that detects the landfill height of landfills carried into the landfill;
An input device for inputting the type of the landfill and the delivery date and time;
It has a landfill management data processing system that creates a landfill history of landfills in a landfill or obtains the amount of landfill and the amount of landfill remaining,
Landfill management system. In the landfill management system according to claim 1,
The landfill height detector is attached to the slope of the landfill and the vent pipe.
Landfill management system. In the landfill management system according to any one of claims 1 to 2,
The landfill height detection device is characterized by having a visible scale indicating the landfill height of the landfill.
Landfill management system. In the landfill management system according to any one of claims 1 to 2,
The landfill height detection device includes a plurality of electrodes arranged in the height direction of the landfill,
A voltage is applied between the electrodes, and the position of the carried landfill is measured,
Landfill management system. In the landfill management system according to claim 4,
The water leakage detection electrode is arranged in a mesh near the water shielding sheet,
Provide internal and external electrodes to apply voltage to the inside and outside of the landfill,
It is characterized by detecting the water leakage by measuring the potential distribution near the water shielding sheet with the water leakage detection electrode.
Landfill management system.

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