JP2012152056A - Separation distance determination method and upright body used for separation distance determination method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tree height grasping method capable of easily grasping whether a tree exceeds a separation distance between an overhead transmission line and the tree due to a simple configuration of an upright body and the upright body used for the tree height grasping method.SOLUTION: A separation distance determination method for grasping a height of a tree 110 to be planted below an overhead transmission line 102 and determining whether a separation distance D between the overhead transmission line 102 and a top part of the tree 110 is secured includes an upright body installation step of installing an upright body 10 having a prescribed height in a vegetation region of the tree 110 below the overhead transmission line 102 and a tree height grasping step of grasping a height of the tree 110 by comparing the height position of the upright body 10 installed in the upright body installation step with the height of the tree 110. This allows you to grasp a height position of the tree 110 at a glance and also to easily determine whether the separation distance D between the overhead transmission line 102 and the top part of the tree 110 is secured.

Description

  The present invention is a stand-up body used in the separation distance judgment method and the separation distance judgment method, and in particular, grasps the height of a tree that grows below the overhead transmission line and determines the separation distance between the overhead transmission line and the top of the tree. It is related with the standing body used for the separation distance judgment method to judge and the separation distance judgment method.

  In an overhead power transmission line constructed in a mountain forest area, as a tree that grows below the overhead power transmission line grows, the distance between the overhead power transmission line and the tree may become smaller and insulation clearance may not be secured. Therefore, to prevent the growth of trees from exceeding the distance between the overhead power transmission line and the object determined in advance by the electrical equipment technical standards, the tree is cut down to secure the distance between the overhead power transmission line and the tree. ing.

  In order to determine whether or not this separation distance is secured, the worker regularly measures the separation distance using a measuring instrument such as a transit or the like during a patrol of the mountainous area as a daily work, or by a helicopter The distance is measured from the sky. However, in a mountainous area where trees are prosperous, it is complicated to measure the separation distance using a measuring instrument such as transit. Further, in the measurement of the separation distance by the worker using the measuring device, an error may occur due to a difference in skill level of each worker. Even with visual observation using a helicopter, the measurement accuracy may be affected by the skill level of the operator.

  Therefore, in Patent Document 1, a self-propelled measuring device equipped with a photographing device is run on an overhead power transmission line to detect a traveling distance, and an image of a tree to be measured photographed at an arbitrary point by the photographing device. The horizontal depression angle between the overhead power transmission line and the tree is detected based on the above, and the separation distance from the overhead power transmission line to the tree is calculated based on these detected values.

JP-A 63-228019

  The above-mentioned Patent Document 1 measures the separation distance between an overhead power transmission line and a tree, and whether or not the separation distance determined by the electrical equipment technical standards is secured is after calculating the separation distance. I can't judge. That is, it cannot be immediately determined on site whether or not a predetermined separation distance is secured. Moreover, even if the separation distance is measured, it is necessary to install a measuring device on the overhead transmission line for the measurement, so it cannot be measured easily during patrols of mountainous areas in daily work. It can be measured only when patrol the mountainous area for the purpose of distance survey. In addition, there is a possibility of increasing the work burden due to the installation of the measuring device on the overhead power transmission line installed at a high place.

  Furthermore, by incorporating a self-propelled structure into the measuring device, the structure of the measuring device becomes complicated, and the manufacturing cost increases with the complexity of the structure. In addition, since a calculation process based on the detected horizontal depression angle and travel distance between the overhead power transmission line and the tree is required, an increase in the work burden associated with the calculation process is expected.

  The present invention has been made in view of the above problems, and its purpose is to determine a separation distance and a separation distance determination that can easily determine the separation distance between an overhead transmission line and the top of a tree at a glance. It is providing the standing body used for a method.

  In order to achieve the above object, the separation distance judging method according to the first aspect of the present invention provides a separation distance between the overhead transmission line and the top of the tree by grasping the height of a tree that grows below the overhead transmission line. In the separation distance judging method for judging whether or not the distance is secured, a standing body installation step for installing a standing body having a predetermined height in a vegetation area of a tree below the overhead power transmission line, and installation of the standing body And a tree height grasping step of grasping the height of the tree by comparing the height position of the standing body installed in the process with the height of the tree.

  According to this configuration, it is possible to easily grasp at a glance the height of a tree planted in this area by a simple operation of visually confirming a standing body installed in a tree vegetation area below the overhead power transmission line. it can. Therefore, since there is no need to use special measuring equipment, it is not limited to patrol the mountain area for the purpose of surveying the distance by immediately grasping the height of the tree. In this case, it is possible to easily determine whether or not it is necessary to secure a separation distance between the overhead power transmission line and the top of the tree. On the other hand, it is possible to easily grasp at a glance the height of a tree planted in an area where the standing body is installed by visually recognizing the standing body with a helicopter or the like from above.

  The separation distance determination method according to claim 2 is the separation distance determination method according to claim 1, wherein the predetermined height of the standing body is an allowable height of growth of a tree planted below the overhead transmission line. It is characterized by being set to the same height as the limit.

  According to this configuration, when the height of the tree reaches the same height as the standing body, it is possible to immediately determine that the allowable height limit for the growth of the tree has been reached. Therefore, it can be easily determined whether or not the separation distance between the overhead power transmission line and the top of the tree is ensured.

  The standing body according to claim 3 is a standing body used in the separation distance judging method according to claim 1 or 2, wherein the tip portion in the standing state is distinguishable from other parts. It is formed in a simple three-dimensional shape.

  According to this structure, since the front-end | tip part of the standing body is formed in three-dimensional shape, it is excellent in the visibility of a standing body even from a distant place. Therefore, for example, even when performing a patrol from above the standing body with a helicopter or the like, the standing body can be easily identified. Furthermore, when the top of the tree starts to cover a part of the three-dimensional tip when viewed from the ground, the overhead transmission line and the top of the tree are It is possible to visually determine immediately that it is necessary to secure a separation distance from the part.

  The standing body according to claim 4 is characterized in that, in the standing body according to claim 3, the three-dimensionally shaped portion is colored in a hue opposite to the hue of the tree. According to this configuration, the visibility of the standing body from a distance is further improved. In addition, when coloring, by coloring the hue that is the opposite color to the hue of the trees that are vegetated in the area where it is installed, the tip of the standing body and the area where the standing body is installed are vegetated. A tree can be clearly identified, and the determination of whether or not it is necessary to secure a separation distance can be further facilitated. Here, the opposite color means a concept including a predetermined range of hues including opposite colors.

  The standing body according to claim 5 is the standing body according to claim 3 or 4, wherein a scale indicating the height of the tree is formed so as to be visually recognizable from the outside. . According to this configuration, since the scale visually recognizable from the outside is formed in the main body portion of the standing body, the scale for whether or not to secure the separation distance between the overhead transmission line and the top of the tree. You can easily judge by just reading.

  According to the present invention, by using an upright body with a simple configuration, an overhead transmission line and a tree can be measured without actually measuring the separation distance between the tree and the overhead transmission line using a special measuring device. It is possible to easily determine at a glance whether or not the separation distance from the top of the head is secured. Therefore, it is possible to quickly start preparing for tree cutting when necessary. As a result, it is possible to smoothly manage logging of trees.

It is a figure explaining the outline of the separation distance judgment method which concerns on embodiment of this invention. Similarly, it is a figure explaining the outline of the separation distance judgment method which concerns on this Embodiment. Using a standing body, grasp whether or not the height of the tree exceeds the maximum permissible height position, and numerically grasp the distance until the height of the tree reaches the maximum permissible height position FIG. It is a figure explaining the outline in the case of performing a tree height grasping process from the upper part of a standing body. Similarly, using the standing body, grasp whether the height of the tree exceeds the maximum allowable height position, and numerically grasp the distance until the height of the tree reaches the maximum allowable height position It is a figure explaining the procedure to perform. It is a figure explaining the outline of the standing body in other embodiment of this invention.

  Next, an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a diagram illustrating an outline of a standing body 10 used in the separation distance determination method according to the embodiment of the present invention. As illustrated, the standing body 10 is installed in a vegetation region of the tree 110 below the overhead power transmission line 102 laid between the power transmission towers 100-1 and 100-2. In a state where the standing body 10 is installed in the vegetation region, the predetermined height of the standing body 10 is the same height as the allowable limit height limit of the growth of the tree 110 vegetated below the overhead power transmission line 102. Is set. In the present embodiment, the maximum allowable height position R of the tree 110 necessary for securing a preset separation distance D between the overhead power transmission line 102 and the tree 110 vegetated below the overhead power transmission line 102 is set. When the height position of the standing body 10 is compared with the height of the tree 110, whether or not the height of the tree 110 exceeds the height position of the standing body 10, that is, the maximum allowable height position R of the tree 110. It is configured to be able to grasp at first glance.

  Here, the separation distance between the overhead power transmission line 102 and the object existing below the overhead power transmission line 102 is 3.92 m from the overhead power transmission line in the overhead power transmission line having a voltage of about 220,000 V. What to do is stipulated in the technical standards for electrical equipment. Since the overhead power transmission line 102 expands and expands when energized, in the present embodiment, the separation distance D is from the position where the overhead power transmission line 102 expands due to power and reaches the maximum sag L from the tension T. The separation distance D is set up to a point below 4.92 m.

  This separation distance D has a reference distance d1 (3.92 m) determined by the electrical equipment technical standards and a safety distance d2 (1 m) for further ensuring safety from the reference distance d1. A band of about 4.92 m is provided along the entire region of the electric wire 102 in the installation direction. The position spaced 4.92 m from the overhead power transmission line 102 is set as the maximum allowable height position R of the tree 110.

  Next, a specific configuration of each part of the standing body 10 according to the present embodiment will be described with reference to FIG. As shown in the figure, the upright body 10 includes a rod-shaped main body portion 12 that is installed in a vegetation region of a tree 110 while being supported by a wire 18 in a reinforcing manner. In the present embodiment, the shape is configured as a spherical identification unit 14. The identification unit 14 has a color opposite to the hue of the tree 110 so that the main body 12 and the tree 110 can be clearly identified when the standing body 10 is visually recognized from above the standing body 10 by a helicopter, for example. It is formed by coloring the hues concerned.

  In the present embodiment, the case where the identification unit 14 is formed in a spherical shape has been described as an example. However, the identification unit 14 is not limited to a spherical shape, and may be any solid shape that is generally well known and easy to identify. The identification part 14 formed in the shape may be sufficient.

  The main body 12 has a scale 16 that can be visually recognized on the ground. In the present embodiment, it is set to display a state in which the distance from the maximum allowable height position R of the tree 110 increases as the main body portion 12 moves from the upper side in the vertical direction to the lower side in the vertical direction. In the present embodiment, the scale 16 is set up to 4 m at intervals of 1 m as it goes from the identification unit 14 downward in the standing direction of the main body 12.

  Next, the separation distance determination method according to the present embodiment will be described with reference to FIGS.

  First, the vegetation region of the tree 110 that is substantially directly below the overhead power transmission line 102 is arranged in the span of the power transmission towers 100-1 and 100-2 along the direction in which the overhead power transmission line 102 is installed. A plurality of cables are installed along the installation direction of the overhead power transmission line 102 (standing structure installation process). In order to install the standing body 10, a foundation is formed in the vegetation region of the tree 110 to be installed, and then the two wires 18 are stretched at opposing positions via the standing body 10. Thereby, the standing body 10 is reinforced and supported by the wire 18. In addition, the installation number of the standing body 10 is suitably adjusted according to the span length of the power transmission towers 100-1 and 100-2. In the present embodiment, three standing bodies 10 are installed between the radial lengths of the power transmission towers 100-1 and 100-2.

  Thereafter, the height position of the standing body 10 installed in the standing body installation process, in this embodiment, the maximum allowable height position R and the height of the tree 110 vegetated in the vegetation area are compared (the tree height grasping). Process).

  This tree height grasping step will be specifically described with reference to FIGS. 2 and 3 to 5. As shown in FIG. 2, in the tree height grasping step, first, the height of the tree 110 is grasped by comparing the height position of the identification unit 14 of the standing body 10 with the height of the tree 110. That is, in the present embodiment, it is grasped whether or not the height of the tree 110 exceeds the height position (maximum allowable height position R) of the standing body 10. At this time, if the height of the tree 110 begins to cover a part of the identification unit 14, a change in the three-dimensional shape of the identification unit 14 can be visually recognized, so a separation distance D between the overhead power transmission line 102 and the tree 110 is secured. Visually determine what needs to be done.

  When the height position of the identification unit 14 of the standing body 10 is compared with the height of the tree 110a, it can be understood at a glance that the tree 110 does not exceed the height position of the identification unit 14. On the other hand, when the height position of the identification unit 14 of the standing body 10 is compared with the height of the tree 110b, it can be understood at a glance that the tree 110b exceeds the height position of the identification unit 14.

  In this tree height grasping step, there are a case where the height of the tree 110 is grasped by visual observation from the ground and a case where the height of the tree 110 is grasped from above the standing body 10 by a helicopter or the like.

  First, the case where the height of the tree 110 is grasped by visual observation from the ground will be described with reference to FIG. FIG. 3 shows whether or not the height of the tree 110 exceeds the maximum allowable height position R using the standing body 10 until the height of the tree 110 reaches the maximum allowable height position R. It is a figure explaining the procedure which grasps | ascertains numerically numerically. In the present embodiment, an example will be described in which there are three trees 110, 110c to 110e, that are vegetated in the region where the standing body 10 is installed.

  When the height position of the identification unit 14 of the standing body 10 is compared with the height of the tree 110c, it can be understood at a glance that the tree 110c does not exceed the height position of the identification unit 14. At the same time, since the height of the top of the tree 110c is located at a point of 2 m on the scale 16 of the standing body 10, the distance from the top of the tree 110c to the maximum allowable height position R is 2 m. At a glance.

  By a similar measurement method, it can be grasped at a glance that the tree 110d does not exceed the height position of the identification unit 14, and the height of the top of the tree 110d is 1 m on the scale 16 of the standing body 10. Therefore, the distance from the top of the tree 110d to the maximum allowable height position R can be grasped numerically as 1 m. Similarly, it is possible to grasp at a glance that the tree 110e is at the same position as the identification unit 14, and to grasp at a glance that the distance from the maximum allowable height position R in the tree 110e is 0 m. Can do.

  Thus, since the standing body 10 in which the height position of the identification unit 14 is set to the maximum allowable height position R of the tree is installed in the vegetation region of the trees 110c to 110e, The identification of the height of the trees 110c to 110e is formed at the tip of the standing body 10 by a simple configuration in which the height position of the identification unit 14 formed at the tip is compared with the height of the tree 110. When it exceeds the height position of the part 14, it can grasp | ascertain at a glance that it exceeded the preset maximum permissible height position R.

  In addition, the scale 16 set in the main body 12 can grasp the distance until the trees 110c to 110e reach the maximum permissible height position R at first glance, and thus can manage the separation distance D. It can be done easily.

  Next, a case where the height of the tree 110 is grasped from above the standing body 10 by a helicopter or the like will be described with reference to FIG.

  FIG. 4 is a diagram for explaining the outline when the tree height grasping step is executed from above the standing body 10. As illustrated, the standing body 10 and the tree 110 are identified from above the standing body 10 by a helicopter (not shown). At this time, since the standing body 10 is configured as a spherical identification part 14 at the tip and is colored with a hue opposite to the tree 110, the standing body 10 is excellent in visibility and standing. The body 10 and the tree 110 can be clearly identified. If the tree 110 is prosperous and covers the identification unit 14 and the standing body 10 cannot be identified from above, it cannot be identified at the place where the standing body 10 is originally standing. It can be determined that the height has grown beyond the height position of the standing body 10.

  After the standing body 10 and the tree 110 are identified, the height of the tree 110 that is vegetated in the region where the standing body 10 is installed from the helicopter is the maximum allowable height position R for each standing body 10. To see if it is over.

  In addition, even if it can grasp | ascertain whether the height of the tree 110 planted in the area | region in which the standing body 10 was installed from the helicopter exceeds the maximum allowable height position R, the tree 110 When it is difficult to numerically grasp the distance until the height reaches the maximum permissible height position R, the maximum permissible height position among the trees 110 vegetated in the area where the standing body 10 is installed The trees 110 that have grown to the critical region of R are measured in advance, and numerically grasped from the ground in a later forest survey.

  After numerically grasping the distance from the top of the trees 110c to e to the maximum allowable height position R, this numerical value is input to the management personal computer. In the management personal computer, based on the input numerical value, it is set so that the higher rank is assigned in ascending order of the numerical value, that is, in the order from the shortest distance from the top of the trees 110c to 110e to the maximum allowable height position R. Yes.

  In the present embodiment, as shown in FIG. 3, the distance from the top of the tree 110e to the maximum allowable height position R is 0 m, which is the smallest, so the first priority is assigned. Next, the distance from the top of the tree 110d to the maximum allowable height position R is 1 m, and the second highest priority is assigned. Finally, the distance from the tree 110c to the maximum permissible height position R is 2 m, and the third priority order is assigned. Thus, priorities are assigned in ascending order of distance from the maximum allowable height position R in the trees 110c to 110e.

  Based on this priority, negotiations for tree cutting or tree cutting are performed. In the negotiation for the felling of the tree, the negotiator for the felling is negotiated with the landowner who owns the tree 110 to be felled. This negotiation is prioritized from landowners who own high priority trees. That is, among the trees 110, the tree whose height position is the shortest to the maximum allowable height position R is the fastest growing and is likely to cause a short-circuit accident by contacting the overhead power transmission line 102. Therefore, the landowner who owns this tree will preferentially negotiate. In this embodiment, the tree 110e is negotiated with the landowner of the tree 110e. After the tree-cutting negotiation with the landowner of the tree 110e is established, the tree 110e is cut down.

  At the same time as the landowner of the tree 110e begins to negotiate the felling, the treeowner of the tree 110d assigned the second highest priority starts to negotiate the felling. That is, it is possible to collect in advance negotiations with the landowner of the tree 110d with the permission to cut the tree 110d so that the tree 110d can be cut immediately when it reaches the maximum allowable height position R.

  As described above, when the land owners of the trees 110c to 110e are different from each other, it is possible to smoothly negotiate the felling permission for the land owner of the tree 110e having the highest priority, and it takes the most time for managing the felling of the tree 110. We can have enough time for logging negotiations with landowners. Therefore, logging management can be executed smoothly.

  After a predetermined period of time has passed after cutting the tree 110e, for example, one year later, when patrol the mountainous area as a daily work, the tree 110c overtakes the growth rate of the tree 110d as shown in FIG. Suppose that it grows larger than 110d. At this time, it can be grasped at a glance that the distance from the top of the tree 110c to the maximum allowable height position R is 50 cm, and the distance from the top of the tree 110d to the maximum allowable height position R is still 1 m. It can be grasped at a glance. That is, unlike the result of the tree height grasp one year ago, the tree 110c has grown overtaking the tree 110d.

  In such a case, in order to review the priority order, the distance from the top of the trees 110c and 110d to the maximum allowable height position R is input again to the management personal computer. Based on this input result, as described above, higher ranks are assigned in ascending order of distance. That is, in the present embodiment, the distance from the top of the tree 110c to the maximum allowable height position R is 50 cm, which is the smallest, so that the priority order is reviewed and the first place is assigned. Since the distance from the top of the tree 110d to the maximum allowable height position R is 1 m, the second priority order is assigned. As described above, the priority assignment is reviewed based on the change in the distance grasped in the tree height grasping process, and the appropriate separation distance D between the overhead power transmission line 102 and the tree 110 is managed. can do.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention. In the said embodiment, although the scale 16 was set to 4 m by the space | interval of 1 m as it went to the standing direction downward direction of the main-body part 12, it was not limited to this, A standing body Various changes can be made according to the situation of the ten installation locations.

  In the said embodiment, although the case where the height of the standing body 10 was set so that the height position of the identification part 14 might become the maximum permissible height position R was demonstrated as an example, as shown in FIG. The height of the standing body 10 can be set so that the identification unit 14 reaches a height within the safety distance d2 of the separation distance D. Also in this case, when the height of the tree 110 starts to cover a part of the identification unit 14, the change in the three-dimensional shape of the identification unit 14 can be visually recognized. Therefore, the separation distance D between the overhead power transmission line 102 and the tree 110 is set to It is possible to immediately determine visually that it is necessary to ensure.

  In the said embodiment, although the case where the main-body part 12 of the standing body 10 was formed in the rod shape was demonstrated, it is not limited to a rod shape, The securing of the separation distance D of the overhead power transmission line 102 and the tree 110 is ensured. Any member may be used as long as it has a predetermined height that can be determined.

10 Standing body 12 Body portion 14 Identification portion 16 Scale D Separation distance R Maximum allowable height position

Claims (5)

In the separation distance determination method of determining whether or not to secure a separation distance between the overhead transmission line and the top of the tree by grasping the height of the tree that is vegetated below the overhead transmission line,
A standing body installation step of installing a standing body having a predetermined height in a vegetation area of a tree below the overhead power transmission line;
A tree height grasping step for grasping the height of the tree by comparing the height position of the standing body installed in the standing body installation step and the height of the tree;
A method for determining a separation distance. The predetermined height of the standing body is:
The separation distance determination method according to claim 1, wherein the separation distance determination method is set to a height that is the same as an allowable height limit of a tree that grows below the overhead power transmission line. A standing body used in the separation distance judging method according to claim 1 or 2,
A standing body characterized in that a tip portion in a standing state is formed in a three-dimensional shape that can be distinguished from other parts.   The standing structure according to claim 3, wherein the three-dimensionally shaped portion is colored in a hue that is opposite to the hue of the tree.   The scale according to claim 3 or 4, wherein a scale indicating the height of the tree is formed so as to be visually recognizable from the outside.

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