JP3122398U - River embankment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sideband structure and a net bag for emergency response to a disaster.
SOLUTION: At least one of a net bag 7 and a sandbag (especially a large sandbag) in which a heavy object is placed is disposed on a slope in a bank (city side) of a river bank 1. In the event of a river flood emergency, these heavy objects that have been piled up in small parts will be transferred to a site that requires reinforcement to prevent the breakage of the dike. The net bag 7 containing a heavy article is provided with a belt-like reinforcing material whose lower end is positioned near the lower end or the lower end of the net bag in order to allow the net bag 7 to be stacked in an orderly manner. As a result of the presence of a band-shaped reinforcing material around the trunk at the lower end of the net bag, the lower end does not spread during the work of packing rocks or concrete block pieces, and it remains stable for a long time even when piled up on the slope.
[Selection] Figure 1

Description

  The present invention relates to a technique for preventing river disasters such as bank breaks due to increased river flow, or for quickly responding to disasters, and in particular, a large amount of sandbags and rocks that are required in river disasters. It is related with the sideband structure which stocks etc. efficiently.

  Conservation management of rivers during floods is a problem directly linked to human lives and house properties. Conventionally, river conservation measures have been taken by increasing the strength by covering the slope of the dike with concrete blocks, etc., but when there is a significant increase in river flow, the slope and top concrete can be removed from the stream. In order to protect, sandbags are arranged on the slope and the top, and a net bag filled with rocks and concrete block pieces is urgently arranged.

In preparation for a river disaster, as shown in FIG. 4, attempts have been made to protect the slope outside the levee from scouring by placing slope 2 outside the levee (river side) and root 3 on the riverbed. . As a solid technique used in such a case, for example, the technique of Patent Document 1 is conventionally known. As shown in FIG. 5, the reinforcing band 5 is disposed on the body of the net bag 4 using resin fibers. By providing the reinforcing band 5, the strength of the net bag 4 is increased, Can be loaded with rocks or concrete block pieces. Further, in order to facilitate lifting, an annular member R for lifting may be disposed at the upper end when the opening of the net bag 4 is closed. In FIG. 4, reference numeral 6 is a side bank embankment.
Japanese Patent Laid-Open No. 11-50428

  By the way, the idea of Patent Document 1 is originally used as a root consolidation block outside the bank of the side belt 1 (river side), and is intended to increase the structural strength of the bank body. Is not considered to increase the strength of the side bank 1 in the bank (city side).

  In addition, if many roots 3 are arranged on the river side slope (outside the bank) from the beginning, the river width will be narrowed. The conventional concept of the sideband structure is to prevent the scouring of the river side slope (outside of the levee) from the long-term perspective using the root 3 and carry a large amount of the root 3 to the necessary site in the event of a flood. The technical idea of reinforcing the embankment is not seen.

  In addition, due to such circumstances, there is a problem in the strength of the net bag used for the root 3. In the invention of Patent Document 1, since the reinforcing band 5 is arranged on the trunk portion, it is possible to suppress damage to the net bag 4 when it is slowly lifted after being filled with rocks or concrete block pieces. When trying to lift up quickly, the net below the lowermost reinforcing band 5 may be damaged by the weight and shape of rocks and the like. In this sense, there is room for improvement in emergency use.

  In the case of Patent Document 1, the net below the lowermost reinforcing band 5 is freely deformed depending on the size of rocks or concrete block pieces. For this reason, when the net bag 4 is stuffed with heavy objects such as rocks, concrete block pieces, and sandbags, it is difficult to order a large amount of roots 3 on the slope as a result of the deformation of the lower end.

  For emergency response to floods, it is desirable to carry river preparation sandbags, etc., prepared in advance to dangerous sites, and place them after the risk of flooding is recognized. If you start making etc., you can not respond quickly. In view of this point, the net bag 4 of Patent Document 1 having the possibility of deforming the lower end is unsuitable for use as a stacked stockpile.

  Therefore, an object of the present invention is to propose a new sideband structure for emergency response to a disaster and to provide a net bag used for the sideband structure.

  In order to achieve the above object, the sideband structure of the levee according to the present invention is provided with at least one of a net bag and a sandbag (especially a large sandbag) in which heavy objects are put on the slope in the levee, (Slope) is coated (Claim 1).

  According to the structure of claim 1, in the event of a flood, a large amount of heavy objects (at least one of net bags and sandbags containing heavy objects) that are subdivided and piled up on the slope in the embankment (city side) will break. It is possible to take emergency measures to ensure the strength of the levee body by urgently carrying it to the site where there is a possibility of.

  Net bags and sandbags with heavy objects are made in advance and distributed in large quantities in the side belt (inside of the bank). Therefore, sandbags and net blocks are made urgently during floods, like conventional river disaster prevention activities. There is no loss of time for transportation.

  It is necessary to arrange a large amount of net bags and sandbags containing heavy objects that realize such a sideband structure in the sideband (inside the bank). Although sandbags are conventionally known, a net bag for storing heavy objects is configured as in claim 2. That is, the body portion is provided with a belt-like reinforcing material, and the reinforcing material disposed at the lowermost end portion has a structure in which the lower end portion is located near the lower end or the lower end of the net bag.

  According to such a configuration, as a result of the presence of the belt-like reinforcing material around the trunk at the lower end of the net bag, the lower end does not spread during the work of filling rocks or concrete block pieces. For this reason, it is possible to keep a substantially constant amount of rock by packing a certain amount of rocks, etc., and at the same time, the bottom end does not spread even when stacked, so that the stockpile state can be kept stable for a long time. .

  According to a third aspect of the present invention, there are provided three or more hoisting rope members arranged in the vertical direction reaching the upper opening from the lower end or the vicinity of the lower end of the net bag.

  By providing the lifting rope material integrally with the net bag, it is possible to reliably reduce the damage to the net bag due to lifting during an emergency operation. If the net bag is simply lifted, the lifting rope material arranged in the vertical direction is not necessarily required. However, considering an emergency work condition such as a flood disaster, a net bag structure that can withstand rough lifting is desired.

  According to a fourth aspect of the present invention, a loop member that engages with the lifting device is provided at the upper end of the lifting rope member.

  In order to lift the net bag, a lifting member (annular member or the like) is provided at a portion where the upper opening of the net bag is closed, and this is connected to a hook or ring (hanging) at the tip of the arm (boom) of the lifting device. It only has to be attached to the upper device) and lifted. However, in the event of an emergency response such as a flood, a net bag structure that can withstand rough lifting is required. If the loop material is provided at the upper end of the hoisting rope material as in claim 4, the net bag, the hoisting rope material, and the loop material can be integrated, and the strength to withstand the lifting in an emergency. High net bag can be realized.

  According to the sideband structure of the embankment according to the present invention, a large number of net bags and sandbags can be urgently arranged at places where reinforcement is required in the event of a flood. In addition, according to the net bag described in claim 2 and below, it is possible to pile up a large amount in an orderly manner on the slope inside the city (city side), and withstand rough lifting during emergency work.

  FIG. 1 shows an embodiment of a side bank structure of a levee according to the present invention, and a net bag (and / or sandbag; the same applies hereinafter) in which a heavy object is placed on the slope of the levee body 1 (city side). Distribute 7. The net bag 7 containing heavy objects is stacked in a stepped manner so as not to collapse. 8 is a partition sheet disposed on the bank body and the top end portion, and 9 is embankment provided on the surface of the net bag 7 containing heavy objects. The embankment 9 is for securing the beauty of the surface of the side belt by planting turf or the like, but is not always necessary. In addition, it is desirable to give drainage means for draining the water in the side belt and the bank body 1 to the lowermost layer portion of the net bag 7 containing heavy objects, for example, drainage drainage D using a dredging mat. . For example, gravel with good drainage is packed in the mat.

  The slope in the bank (river side) may be the same as that of the conventional river bank. For example, a straw mat, a concrete block, an arrangement of roots and the like. From the viewpoint of protecting the natural environment, there may be cases in which such artificial slope reinforcement is not used.

  According to the sideband structure of the present invention, a large amount of net bags 7 containing heavy materials necessary in the event of a disaster are placed in advance on the slope (city side), resulting in an impact on river flow. In the event of a flood, the net bag 7 containing heavy items stacked on the slope (city side) can be urgently deployed at a site where there is a risk of levee breakage. Since it is possible to efficiently respond to emergency disasters without loss of time, there is an effect of minimizing the scale of the disaster.

  FIG. 2 shows a net bag particularly suitable for the sideband structure of the present invention. The net bag 10 is formed using, for example, a substantially flat net cloth made of resin. 11 is a bottom surface, 12 is a trunk portion, 14 is an upper opening, 15 is a lifting rope member arranged in a vertical direction from the bottom surface 11 to the upper opening 14, and 16 is provided at an upper end portion of the lifting rope member 15. Loop. The loop 16 may be a separate member from the hoisting rope member 15, but may be formed into an annular shape by folding the upper end of the hoisting rope member 15.

  When the net bag 10 is produced, the net fabric of the bottom surface 11 and / or the trunk 12 is sewn at an appropriate location. For example, the bottom surface 11 to which a large load is applied is desirably enhanced by folding the lower end of the body portion 12 or overlapping net fabric for the bottom surface. The sewing location of the bottom surface 11 is illustrated as reference numeral 18.

  Reference numeral 20 denotes a band-shaped reinforcing material that increases the strength of the lower end of the net bag 10. This reinforcing material 20 is arranged so that at least the lower end thereof is positioned at or near the bottom surface 11 of the net bag 10 and increases the strength of the waist around the bottom surface where a large weight is applied. It is desirable that the reinforcing member 20 is formed wider than the reinforcing member at other portions of the body portion 12 so that the expansion deformation of the lower end portion of the net bag 10 can be reliably prevented.

  For example, if the vertical width of the reinforcing material disposed in other parts of the body 12 is 3 to 5 cm, the vertical width of the reinforcing material 20 disposed at the lower end of the net bag 10 is, for example, 10 cm or more, preferably 20 to 30 cm. And In order to prevent deformation at the time of stockpiling, it is desirable to provide more reinforcing materials than other conventional net bags. The reinforcing material 20 can be a resin material or a metal material that is resistant to pulling. It is desirable to refrain from using natural materials that are likely to deteriorate at the bottom reinforcing member 20 to which at least a large load is applied.

  When filling such a net bag 10 with a heavy object selected from rocks, sandbags, concrete blocks, and earth and sand, the net bag 10 is arranged in a preparation frame formed of concrete or the like and the net bag 10 is opened from the upper opening 14. Fill the bag 10 with rocks.

  Thereafter, when the upper opening 14 is closed and a lifting device is attached to the loop 16 at the upper end of the hoisting rope member 15 and lifted, as shown in FIG. Stockpile material; see Fig. 1), so it can be stored in an orderly manner on the slope of the levee body 1 (city side).

  If such a net bag 10 is used, the strength of the body 12 near the bottom surface 11 of the net bag 10 is enhanced by the wide reinforcing material 20, so that even if a large number of pieces are stacked, the bottom of the net bag 10 is deformed. Collapse can be prevented. Moreover, even if it is lifted and carried in / out suddenly in an emergency such as a flood, the presence of the reinforcing member 20 can surely suppress damage to the body 12 near the bottom surface 11.

  The net bag used for the side band structure of the present invention is not limited to the configuration of the embodiment shown in FIG. Since it is considered that the probability of a breakage accident during lifting can be greatly reduced by the reinforcing member 20, the lifting rope member 15 is not necessarily provided. However, by arranging the lifting rope material 15, the strength of the net bag 10 is reliably increased in combination with the reinforcing material 20.

  In the embodiment, the loop 16 is provided at the upper end of the lifting rope member 15, but this makes the balance of the weight applied to each lifting rope member 15 uniform and reduces the probability of breakage of the net bag 10. Because.

  Of course, when the hoisting rope member 15 is not provided, the loop 16 cannot exist. However, even in that case, for example, as shown in the above-mentioned Patent Document 1, for example, after the upper opening 14 is wrapped with a rope, a lifting loop or hook is fixed to the upper end of the net bag (10). If this is done, the net bag (7) containing heavy objects can be lifted without problems by being attached to the loop or hook on the heavy machinery side. However, in this case, since it is necessary to separately arrange a lifting loop or hook on the upper end of the net bag (10), it is likely to take production time and increase costs.

  In the above description, it has been described that the flat net cloth is disposed on the bottom surface 11 of the net bag 10. However, if the strength of the net on the bottom surface (11) is sufficiently increased, the structure need not necessarily be flat on the bottom surface. For example, even if the bottom surface has a substantially V-shape, if the strength of the net on the bottom surface is increased and the vertical width of the reinforcing member 20 is sufficiently large, there will be no breakage during lifting, The lower end of the structure is less likely to be deformed.

It is a figure which shows embodiment of the side band structure of this invention. It is a perspective view which shows embodiment of the net bag used for the side belt structure of this invention. It is a figure which illustrates the state which closed the upper opening of the net bag of FIG. It is a figure which shows the conventional sideband structure. It is a perspective view which shows the conventional net bag for root fixation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Levee 3 Root solid 8 Partition sheet 6, 9 Filling 7 Net bag (with heavy load) 10 (Empty) net bag 11 Bottom 12 Body 14 Upper opening 15 Lifting rope material 16 Loop 18 Sewing point 20 Reinforcement material D Drainage drainage R Annular member

Claims (4)

  A side-band structure of a levee characterized in that at least one of a net bag and a sandbag containing heavy objects is disposed on a slope in a river levee and covers the slope in the levee. The net bag according to claim 1 is provided with a belt-like reinforcing material in the trunk portion,
The net bag characterized by that the lower end part of the reinforcing material disposed at the lowermost end part is located at or near the lower end of the net bag.   The net bag according to claim 2, further comprising three or more hoisting rope members arranged in the vertical direction reaching the upper opening from the lower end or the vicinity of the lower end of the net bag.   4. The net bag according to claim 2, wherein a loop material that engages with the lifting device is provided at an upper end of the lifting rope material.

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