JP2019015085A - Sandbag layer structure - Google Patents

Sandbag layer structure Download PDF

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JP2019015085A
JP2019015085A JP2017132556A JP2017132556A JP2019015085A JP 2019015085 A JP2019015085 A JP 2019015085A JP 2017132556 A JP2017132556 A JP 2017132556A JP 2017132556 A JP2017132556 A JP 2017132556A JP 2019015085 A JP2019015085 A JP 2019015085A
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sandbag
mortar
ground
covering
soil
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JP6979293B2 (en
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光信 沖原
Mitsunobu Okihara
光信 沖原
大川　英一
Hidekazu Okawa
英一 大川
伸博 西名
Nobuhiro Nishina
伸博 西名
肇 阪本
Hajime Sakamoto
肇 阪本
日出夫 小杉
Hideo Kosugi
日出夫 小杉
山本　義昭
Yoshiaki Yamamoto
義昭 山本
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Shimizu Construction Co Ltd
Shimizu Corp
Tokyo Electric Power Co Holdings Inc
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Shimizu Construction Co Ltd
Shimizu Corp
Tokyo Electric Power Co Holdings Inc
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Abstract

To provide a sandbag layer structure capable of properly maintaining durability, fire resistance, water shutoff property and shielding property for a long period.SOLUTION: A sandbag layer structure 1 constituted of stacked sand bags 21 comprises: a sandbag portion 2 constituted of the stacked sand bags 21; and a mortar portion 3 covering a surface of the sandbag portion 2. The sandbag portion 2 is constructed on a ground 11. The mortar portion 3 includes a sandbag covering portion 31 covering the sandbag portion 2 and a ground covering portion 32 covering a surface of a ground 11 continuous from the ground 11 on which the sandbag portion 2 is constructed. The sandbag covering portion 31 and the ground covering portion 32 are integrally formed.SELECTED DRAWING: Figure 1

Description

本発明は、土のうを積み上げて構築する土のう積構造物に関する。   The present invention relates to a structure for building up a soil structure that is constructed by stacking sandbags.

従来から土のうを積み上げて構築した土留めや壁体などが知られている（例えば、特許文献１および２参照）。このような土のうを積み上げて構築した構造物を土のう積構造物とすると、土のう積構造物は、短期間で構築することができるため、災害復旧工事などにおいても使用されている。   Conventionally, earth retainings and wall bodies constructed by stacking sandbags are known (see, for example, Patent Documents 1 and 2). If a structure constructed by stacking such sandbags is a sandbag structure, the sandbag structure can be constructed in a short period of time, and is therefore used in disaster recovery work and the like.

特開２００８−５７２８５号公報JP 2008-57285 A 特開２０１０−７７６３９号公報JP 2010-77639 A

土のう積構造物は、外力によって土のうが変形したり、経年劣化や飛来物などによって土のうの袋体が損傷したりすると、耐久性および遮水性が低下する虞がある。また、経年劣化した土のうの袋体は、自然発火する虞がある。このため、長期に渉って耐久性や遮水性、耐火性を良好に維持することができる土のう積構造物が望まれている。
また、土のう積構造物の遮へい性を利用して放射線を遮へいすることが考えられる。このため、遮へい性についても長期に渉って良好に維持することができる土のう積構造物が望まれている。 In the case of a soil pile structure, if the sandbag is deformed by an external force, or if the soil bag body is damaged due to aging or flying, there is a risk that durability and water shielding performance may be lowered. In addition, the soil bag that has deteriorated over time may spontaneously ignite. For this reason, there is a demand for a soil structure that can maintain good durability, water shielding, and fire resistance over a long period of time.
In addition, it is conceivable to shield radiation by using the shielding properties of the sediment structure. For this reason, there is a demand for a soil pile structure that can maintain good shielding performance over a long period of time.

そこで、本発明は、長期に渉って耐久性、耐火性、遮水性および遮へい性を良好に維持することができる土のう積構造物を提供することを目的とする。   Therefore, an object of the present invention is to provide a soil structure that can maintain durability, fire resistance, water shielding and shielding properties well over a long period of time.

上記目的を達成するため、本発明に係る土のう積構造物は、土のうを積み上げて構築する土のう積構造物において、前記土のうを積み上げた土のう部と、前記土のう部の表面を被覆するモルタル部と、を有することを特徴とする。   In order to achieve the above-mentioned object, a soil pile structure according to the present invention is a soil pile structure constructed by stacking sandbags, a sandbag portion in which the sandbags are piled up, and a mortar portion covering the surface of the sandbag portion It is characterized by having.

本発明では、土のう部の表面がモルタル部に被覆されていることにより、外力による土のうの変形を防止できるとともに、経年劣化や飛来物による土のうの損傷を防止することができる。これにより、長期に渉って土のう積構造物の耐久性を良好に維持することができる。
また、土のう部の表面がモルタル部に被覆されていることにより、長期に渉って土のう積構造物の耐火性を良好に維持することができる。経年劣化した土のう部が自然発火する虞もない。
また、モルタル部が土のう間の隙間を確実に塞ぐことができるため、遮水性および遮へい性を向上させることができる。これにより、長期に渉って土のう積構造物の遮水性および遮へい性を良好に維持することができる。 In the present invention, since the surface of the sandbag portion is covered with the mortar portion, deformation of the sandbag due to external force can be prevented, and deterioration of the sandbag due to aging and flying objects can be prevented. Thereby, the durability of the mud structure can be maintained well over a long period of time.
Moreover, since the surface of the sandbag part is coat | covered with the mortar part, the fire resistance of the sandbag structure can be maintained favorable over a long period of time. There is no risk of spontaneous firing of aged parts that have deteriorated over time.
Moreover, since the mortar part can block | close the space | gap between sandbags reliably, water-insulating property and shielding property can be improved. Thereby, it is possible to maintain the water shielding and shielding properties of the mud structure well over a long period of time.

また、本発明に係る土のう積構造物では、前記土のう部は、地盤の上に構築されていて、前記モルタル部は、前記土のう部の表面を被覆する土のう被覆部と、前記土のう部の周囲の地盤の表面を被覆する地盤被覆部と、を有し、前記土のう被覆部と前記地盤被覆部とは、連続して一体に形成されていてもよい。
このような構成とすることにより、土のう部と地盤との隙間を確実に塞ぐことができるため、遮水性および遮へい性を向上させることができる。 Further, in the soil pile structure according to the present invention, the sandbag portion is constructed on the ground, and the mortar portion includes a sandbag coating portion covering a surface of the sandbag portion, and a periphery of the soilbag portion. A ground covering portion that covers the surface of the ground, and the soil covering portion and the ground covering portion may be integrally formed continuously.
By setting it as such a structure, since the clearance gap between a sandbag part and the ground can be block | closed reliably, water-insulating property and shielding property can be improved.

また、本発明に係る土のう積構造物では、前記モルタル部は、モルタルを吹き付けることで形成されていてもよい。
このような構成とすることにより、モルタル部を容易に形成することができる。 Moreover, in the soil pile structure according to the present invention, the mortar portion may be formed by spraying mortar.
By setting it as such a structure, a mortar part can be formed easily.

また、本発明に係る土のう積構造物では、前記モルタル部には、合成樹脂製の短繊維が混入されていてもよい。
また、本発明に係る土のう積構造物では、前記短繊維は、ポリプロピレン製であってもよい。
このような構成とすることにより、モルタル部の耐久性を向上させることができる。また、短繊維によってモルタル部にひび割れが発生することを抑制したり、短繊維がモルタル部に設けられるラス金網の代わりとなってラス金網の施工が不要となり工期を短縮したりすることができる。 Moreover, in the soil pile structure according to the present invention, short fibers made of synthetic resin may be mixed in the mortar portion.
Moreover, in the soil pile structure according to the present invention, the short fibers may be made of polypropylene.
By setting it as such a structure, durability of a mortar part can be improved. In addition, it is possible to suppress the occurrence of cracks in the mortar portion due to the short fibers, or to replace the lath wire mesh provided with the short fibers in the mortar portion, so that the construction of the lath wire mesh becomes unnecessary and the construction period can be shortened.

また、本発明に係る土のう積構造物では、前記モルタル部には、複数種類の前記短繊維が混入されていてもよい。
このような構成とすることにより、複数種類の短繊維それぞれの機能が発揮され、モルタル部をより良好な状態に形成することができる。 In the soil pile structure according to the present invention, a plurality of types of the short fibers may be mixed in the mortar portion.
By setting it as such a structure, the function of each of multiple types of short fiber is exhibited, and a mortar part can be formed in a more favorable state.

本発明によれば、長期に渉って耐久性、耐火性および遮水性を維持することができるとともに、遮へい性を向上させることができる。   According to the present invention, durability, fire resistance, and water shielding can be maintained over a long period of time, and shielding performance can be improved.

本発明の実施形態による土のう積構造物の一例を示す図で、モルタル部の一部を省略した図である。It is a figure which shows an example of the soil pile structure by embodiment of this invention, and is the figure which abbreviate | omitted a part of mortar part.

以下、本発明の実施形態による土のう積構造物について、図１に基づいて説明する。
図１に示すように、本実施形態による土のう積構造物１は、地盤１１の上に構築された壁体で、放射線の遮へいおよび遮水を目的として設けられている。
土のう積構造物１が地盤１１に沿って延びる方向を長さ方向とし、長さ方向に直交する方向を厚さ方向とし、上下を結ぶ方向を上下方向とする。 Hereinafter, a soil pile structure according to an embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, the soil structure 1 according to the present embodiment is a wall constructed on the ground 11 and is provided for the purpose of shielding radiation and shielding water.
The direction in which the sediment structure 1 extends along the ground 11 is the length direction, the direction orthogonal to the length direction is the thickness direction, and the direction connecting the top and bottom is the top and bottom direction.

土のう積構造物１は、地盤１１に積み上げられた複数の土のう２１，２１…によって形成された土のう部２と、土のう部２の表面を被覆するモルタル部３と、を有している。
土のう部２は、土のう積構造物１の長さ方向、厚さ方向および上下方向の全体にわたるように形成されている。土のう部２の複数の土のう２１，２１…は、それぞれフレコンバッグなどの袋体２１１に土砂２１２が詰められて形成されている。 The soil piling structure 1 includes a soil couch portion 2 formed by a plurality of soil couches 21, 21... Stacked on the ground 11, and a mortar portion 3 that covers the surface of the soil claw portion 2.
The sandbag portion 2 is formed so as to cover the entire length direction, thickness direction, and vertical direction of the sandbag structure 1. The plurality of sandbags 21, 21... In the sandbag portion 2 are formed by filling earth and sand 212 in a bag body 211 such as a flexible container bag.

土のう部２は、その長さ方向全体にわたって、上下方向に３段となるように土のう２１が積み上げられている。土のう部２は、最下段が上側の段よりも厚さ方向に多くの土のう２１が配列され、下側の段から上側の段に向かって漸次厚さ方向に配列される土のう２１の数が少なくなっている。長さ方向、厚さ方向および上下方向に隣り合う土のう２１，２１の境界部分は段部となっており、土のう部２の表面には凹凸が形成されている。   The earthenware part 2 is piled up with earthenware 21 so that it becomes three steps in the vertical direction over the entire length direction. In the sandbag 2, more sandbags 21 are arranged in the thickness direction in the lowermost stage than in the upper stage, and the number of sandbags 21 arranged gradually in the thickness direction from the lower stage to the upper stage is small. It has become. The boundary portions of the sandbags 21 and 21 adjacent to each other in the length direction, the thickness direction, and the vertical direction are stepped portions, and unevenness is formed on the surface of the sandbag portion 2.

モルタル部３は、土のう部２の表面を被覆する土のう被覆部３１と、土のう部２の周囲の地盤１１の表面を被覆する地盤被覆部３２と、を有している。
土のう被覆部３１は、土のう部２の上面および側面（地盤と対向する面以外全体）を隙間なく被覆している。なお、図１では、モルタル部３の一部を省略している。
地盤被覆部３２は、土のう部２の全周を囲むように設けられている。
土のう被覆部３１と地盤被覆部３２とは隙間なく連続して一体に形成されている。 The mortar portion 3 includes a sandbag covering portion 31 that covers the surface of the sandbag portion 2 and a ground covering portion 32 that covers the surface of the ground 11 around the sandbag portion 2.
The sandbag covering portion 31 covers the upper surface and side surfaces of the sandbag portion 2 (the entire surface other than the surface facing the ground) without any gaps. In FIG. 1, a part of the mortar portion 3 is omitted.
The ground covering portion 32 is provided so as to surround the entire circumference of the sandbag portion 2.
The sandbag covering portion 31 and the ground covering portion 32 are formed continuously and integrally with no gap.

モルタル部３は、モルタルに２種類の合成樹脂製の短繊維が混合された吹き付け材を吹き付けることで形成されている。２種類の合成樹脂製の短繊維のうちの一方を第１短繊維とし、他方を第２短繊維とする。
第１短繊維は、ポリプロピレン製の短繊維で、土のう部や地盤へのモルタルの付着を高めるためにモルタルに混入されている。本実施形態では、第１短繊維は、「のりファイバー」と称される短繊維を用いている。第１短繊維は、モルタルに混入することにより、モルタル部のラス金網を不要とすることができる。
第２短繊維は、ポリプロピレン製の短繊維で、モルタル部のクラックを防止するためにモルタルに混入されている。本実施形態では、テザック社製商品名「タフライト」などが採用されている。モルタルに第１短繊維および第２短繊維を混入したものをモルタル吹き付け材とする。 The mortar part 3 is formed by spraying a spray material in which two types of short fibers made of synthetic resin are mixed with the mortar. One of the two types of synthetic resin short fibers is a first short fiber, and the other is a second short fiber.
The first short fibers are polypropylene short fibers, and are mixed in the mortar in order to enhance adhesion of the mortar to the earthen part or the ground. In the present embodiment, the first short fibers are short fibers called “paste fibers”. By mixing the first short fibers into the mortar, the lath wire mesh in the mortar portion can be made unnecessary.
The second short fibers are polypropylene short fibers and are mixed in the mortar to prevent cracks in the mortar portion. In the present embodiment, a product name “Taflite” manufactured by Tezak Co., etc. is employed. The mortar mixed with the first short fibers and the second short fibers is used as the mortar spraying material.

本実施形態では、モルタル吹き付け材のモルタルの配合を、セメントと砂の比を１：４、水セメント比５０％としている。また、モルタル吹き付け材には、モルタル１ｍ３当りに、第１短繊維が６．９０ｋｇ混入され、第２短繊維が０．９１ｋｇ混入されている。 In the present embodiment, the mortar composition of the mortar spray material is such that the ratio of cement to sand is 1: 4 and the water cement ratio is 50%. The mortar spray material contains 6.90 kg of first short fibers and 0.91 kg of second short fibers per 1 m 3 of mortar.

次に、本実施形態による土のう積構造物１の構築方法について説明する。
まず、土のう部２を構築する。
袋体２１１に土砂２１２を詰めて複数の土のう２１を作る。
複数の土のう２１を所定の長さ、所定の厚さおよび所定の高さに積み上げて、土のう部２を構築する。
続いて、モルタル部３を形成する。
土のう部２の表面、および土のう部２の周囲の地盤１１の表面に一体にモルタル吹き付け材を吹き付け、モルタル部３の土のう被覆部３１および地盤被覆部３２を一体に形成する。土のう部２の表面、および土のう部２の周囲の地盤１１の表面に吹き付けられたモルタル吹き付け材が硬化することでモルタル部３が形成され、土のう積構造物１が構築される。 Next, the construction method of the soil pile structure 1 according to the present embodiment will be described.
First, the sandbag 2 is constructed.
The bag body 211 is filled with earth and sand 212 to form a plurality of sandbags 21.
A plurality of sandbags 21 are stacked in a predetermined length, a predetermined thickness, and a predetermined height to construct the sandbag portion 2.
Subsequently, the mortar part 3 is formed.
The mortar spraying material is sprayed integrally on the surface of the soil couch part 2 and the surface of the ground 11 around the soil couch part 2, so that the soil covering part 31 and the ground covering part 32 of the mortar part 3 are integrally formed. The mortar part 3 is formed by hardening the mortar spraying material sprayed on the surface of the earthen part 2 and the surface of the ground 11 around the earthen part 2, and the soil structure 1 is constructed.

次に、本実施形態による土のう積構造物１の作用・効果について図面を用いて説明する。
本実施形態による土のう積構造物１では、土のう部２の表面がモルタル部３に被覆されていることにより、外力による土のうの変形を防止できるとともに、経年劣化や飛来物による土のう２１の損傷を防止することができる。これにより、長期に渉って土のう積構造物１の耐久性を良好に維持することができる。
また、土のう部２の表面がモルタル部３に被覆されていることにより、長期に渉って土のう積構造物１の耐火性を良好に維持することができる。経年劣化した土のう２１が自然発火する虞もない。
また、モルタル部３が土のう２１，２１間の隙間を確実に塞ぐことができるため、遮水性および遮へい性を向上させることができる。これにより、長期に渉って土のう積構造物１の遮水性および遮へい性を良好に維持することができる。 Next, the operation and effect of the soil pile structure 1 according to the present embodiment will be described with reference to the drawings.
In the soil pile structure 1 according to the present embodiment, the surface of the sandbag part 2 is covered with the mortar part 3, so that the sandbag deformation due to external force can be prevented, and deterioration of the sandbag 21 due to aged deterioration and flying objects can be prevented. can do. Thereby, the durability of the soil pile structure 1 can be maintained well over a long period of time.
Moreover, since the surface of the earthen part 2 is coat | covered with the mortar part 3, the fire resistance of the earthen structure 1 can be maintained favorable over a long period of time. There is no possibility that the aged soilbag 21 will spontaneously ignite.
Moreover, since the mortar part 3 can block | close the clearance gap between the sandbags 21 and 21 reliably, it can improve water-proof and shielding properties. Thereby, the water-blocking property and shielding property of the soil pile structure 1 can be maintained well over a long period of time.

また、モルタル部は、土のう部２を被覆する土のう被覆部３１と、土のう部２の周囲の地盤１１の表面を被覆する地盤被覆部３２と、を有し、土のう被覆部３１と地盤被覆部３２とが一体に形成されていることにより、土のう部２と地盤１１との隙間を確実に塞ぐことができるため、遮水性および遮へい性を向上させることができる。   Further, the mortar portion includes a sandbag covering portion 31 that covers the sandbag portion 2, and a ground covering portion 32 that covers the surface of the ground 11 around the sandbag portion 2, and the sandbag covering portion 31 and the ground covering portion 32. Are formed integrally, the gap between the earthen part 2 and the ground 11 can be reliably closed, so that the water shielding property and the shielding property can be improved.

また、モルタル部３は、土のう部２の表面、および土のう部２の周囲の地盤１１の表面にモルタル吹き付け材を吹き付けることで形成されているため、モルタル部３を容易に形成することができる。   Moreover, since the mortar part 3 is formed by spraying a mortar spraying material on the surface of the earthen part 2 and the surface of the ground 11 around the earthen part 2, the mortar part 3 can be easily formed.

また、モルタル吹き付け材には、第１短繊維が混入されていることにより、第１短繊維がラス金網の代わりとなってラス金網の施工が不要となるため、工期を短縮することができる。
また、モルタル吹き付け材には、第１短繊維が混入されていることにより、土のう被覆部３１と地盤被覆部３２との境界部分に継手処理を行う必要がなく、土のう被覆部３１と地盤被覆部３２とを連続した状態に容易に形成することができる。
また、モルタル吹き付け材には、第１短繊維および第２短繊維が混入されていることにより、吹き付け時にモルタル吹き付け材が垂れることが防止され、施工性が良い。
また、モルタル部３には、第２短繊維が混入されていることにより、第２短繊維によってモルタル部３にひび割れが発生することを抑制できる。
モルタル部３（モルタル吹き付け材）には、第１短繊維および第２短繊維の２種類の短繊維が混入されていることにより、第１短繊維および第２短繊維の機能がそれぞれ発揮され、モルタル部３をより良好な状態に形成することができる。 Further, since the first short fibers are mixed in the mortar spray material, the first short fibers can be used in place of the lath wire mesh, so that the construction of the lath wire mesh is not required, so that the construction period can be shortened.
Further, since the first short fibers are mixed in the mortar spray material, it is not necessary to perform joint processing on the boundary portion between the sandbag covering portion 31 and the ground covering portion 32, and the sandbag covering portion 31 and the ground covering portion. 32 can be easily formed in a continuous state.
Moreover, since the 1st short fiber and the 2nd short fiber are mixed in the mortar spraying material, it is prevented that a mortar spraying material droops at the time of spraying, and workability | operativity is good.
Moreover, the 2nd short fiber is mixed in the mortar part 3, and it can suppress that a crack generate | occur | produces in the mortar part 3 by the 2nd short fiber.
In the mortar part 3 (mortar spraying material), the functions of the first short fiber and the second short fiber are exhibited by mixing two kinds of short fibers, the first short fiber and the second short fiber, The mortar part 3 can be formed in a better state.

以上、本発明による土のう積構造物の実施形態について説明したが、本発明は上記の実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。
例えば、上記の実施形態では、土のう積構造物１は、放射線の遮へいおよび遮水を目的とした壁部を構成しているが、他の目的のために設けられたり、他の形態に構築されていたりしてもよい。例えば、土のう積構造物が、のり面などに沿って構築された土留めを構成していてもよい。また、土のう積構造物において土のう部２が積み上げられる段数や範囲は適宜設定されてよい。 As mentioned above, although the embodiment of the soil pile structure by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the above-described embodiment, the sediment structure 1 constitutes a wall portion for the purpose of shielding radiation and shielding water, but is provided for other purposes or constructed in another form. It may be. For example, a soil pile structure may constitute an earth retaining constructed along a slope or the like. Further, the number of steps and the range in which the sandbag portion 2 is stacked in the sandbag structure may be set as appropriate.

また、上記の実施形態では、モルタル部３は、土のう部２を被覆する土のう被覆部３１と、土のう部２の周囲の地盤１１の表面を被覆する地盤被覆部３２と、を有する構成であるが、土のう部２を被覆する土のう被覆部３１のみを有する構成であってもよい。
また、上記の実施形態では、地盤被覆部３２は、土のう部２の全周囲の地盤１１の表面を被覆するように構成されているが、土のう部２の周囲の地盤１１のうちの一部や複数の部分の表面を被覆するように構成されていてもよい。 Moreover, in said embodiment, although the mortar part 3 is a structure which has the sandbag coating part 31 which coats the sandbag part 2, and the ground coating part 32 which coat | covers the surface of the ground 11 around the sandbag part 2. FIG. A configuration having only the sandbag covering portion 31 that covers the sandbag portion 2 may be adopted.
Further, in the above-described embodiment, the ground covering portion 32 is configured to cover the surface of the ground 11 around the entire sandbag portion 2, but a part of the ground 11 around the sandbag portion 2 or You may be comprised so that the surface of a several part may be coat | covered.

また、上記の実施形態では、モルタル部３は、土のう部２の表面にモルタルを吹き付けることで形成されているが、吹き付け以外によって形成されてもよい。
また、上記の実施形態では、モルタル部３には、第１短繊維および第２短繊維が混入されているが、第１短繊維および第２短繊維の両方またはいずれか一方が混入されていなくてもよい。また、モルタル部３に混入される繊維の形態や、モルタル吹き付け材の配合は、適宜設定されてよい。
また、モルタル部には、ラス金網が設けられていてもよい。また、土のう積構造物には、モルタル部の土のう部への付着を向上させるための部材が設けられていてもよい。 Moreover, in said embodiment, although the mortar part 3 is formed by spraying mortar on the surface of the earthen part 2, it may be formed by other than spraying.
Moreover, in said embodiment, although the 1st short fiber and the 2nd short fiber are mixed in the mortar part 3, both the 1st short fiber and the 2nd short fiber are not mixed. May be. Moreover, the form of the fiber mixed in the mortar part 3 and the composition of the mortar spraying material may be appropriately set.
Further, a lath wire mesh may be provided in the mortar portion. Moreover, the member for improving the adhesion to the sandbag part of the mortar part may be provided in the sandbag structure.

１ 土のう積構造物
２ 土のう部
３ モルタル部
１１ 地盤
２１ 土のう
３１ 土のう被覆部
３２ 地盤被覆部 DESCRIPTION OF SYMBOLS 1 Sediment structure 2 Soil part 3 Mortar part 11 Ground 21 Soil part 31 Soil part covering part 32 Soil covering part

Claims (6)

土のうを積み上げて構築する土のう積構造物において、
前記土のうを積み上げた土のう部と、
前記土のう部の表面を被覆するモルタル部と、を有することを特徴とする土のう積構造物。 In the structure of sandbags built by stacking sandbags,
A sandbag portion in which the sandbags are stacked;
And a mortar part covering the surface of the earthen part. 前記土のう部は、地盤の上に構築されていて、
前記モルタル部は、前記土のう部の表面を被覆する土のう被覆部と、
前記土のう部の周囲の地盤の表面を被覆する地盤被覆部と、を有し、
前記土のう被覆部と前記地盤被覆部とは、連続して一体に形成されていることを特徴とする請求項１に記載の土のう積構造物。 The sandbag is built on the ground,
The mortar part is a sandbag covering part that covers the surface of the sandbag part,
A ground covering portion covering the surface of the ground around the sandbag,
The sandbag structure according to claim 1, wherein the sandbag covering portion and the ground covering portion are integrally formed continuously. 前記モルタル部は、モルタルを吹き付けることで形成されていることを特徴とする請求項１または２に記載の土のう積構造物。   The soil laying structure according to claim 1 or 2, wherein the mortar portion is formed by spraying mortar. 前記モルタル部には、合成樹脂製の短繊維が混入されていることを特徴とする請求項１から３のいずれか一項に記載の土のう積構造物。   The soil laying structure according to any one of claims 1 to 3, wherein short fibers made of synthetic resin are mixed in the mortar portion. 前記モルタル部には、複数種類の前記短繊維が混入されていることを特徴とする請求項４に記載の土のう積構造物。   The soil laying structure according to claim 4, wherein a plurality of types of the short fibers are mixed in the mortar part. 前記短繊維は、ポリプロピレン製であることを特徴とする請求項４または５に記載の土のう積構造物。   The soil pile structure according to claim 4 or 5, wherein the short fibers are made of polypropylene.
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