JP2018179056A - Protective sheet of underground pipe conduit - Google Patents

Protective sheet of underground pipe conduit Download PDF

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JP2018179056A
JP2018179056A JP2017075770A JP2017075770A JP2018179056A JP 2018179056 A JP2018179056 A JP 2018179056A JP 2017075770 A JP2017075770 A JP 2017075770A JP 2017075770 A JP2017075770 A JP 2017075770A JP 2018179056 A JP2018179056 A JP 2018179056A
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synthetic resin
base fabric
protective sheet
pipe
fiber
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俊雄 廣渡
Toshio Hirowatari
俊雄 廣渡
章彦 宮部
Akihiko Miyabe
章彦 宮部
篤則 小村
Atsunori Komura
篤則 小村
宏輝 中村
Hiroteru Nakamura
宏輝 中村
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Shinwa Sangyo Co Ltd
Nichido Denko Co Ltd
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Shinwa Sangyo Co Ltd
Nichido Denko Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a protective sheet having shock resistance against shock from a sharp tip of an excavator, and capable of showing a pipe conduit display color clearly.SOLUTION: This invention relates to a protective sheet (2) of a synthetic resin-based underground pipe conduit buried in the ground. The protective sheet (2) has a synthetic resin fiber-based base fabric (5), and a synthetic resin-based cotton fiber layer (6), wherein they are integrated with needling. Also, on at least one surface of the synthetic resin fiber-based base fabric (5), the synthetic resin-based cotton fiber layer (6) having a pipe conduit display color is arranged, the synthetic resin fiber-based base fabric (5) and the synthetic resin-based cotton fiber layer (6) are integrated with needling, and thus, the pipe conduit display color can be shown clearly.SELECTED DRAWING: Figure 2

Description

本発明は、地中に埋設されるガス管や水道管等の合成樹脂製流体輸送管あるいは、電力線や通信線を内蔵した合成樹脂電線管の埋設表示を兼ねる防護シートに関し、特に、流体輸送管や電力管として使用がされている合成樹脂製地中埋設管がツルハシや油圧ショベル等の掘削機器を用いての掘削作業時に損傷するのを防止する防護シートに関する。   The present invention relates to a protective sheet which also serves as an embedded indication of a synthetic resin fluid transport pipe such as a gas pipe or a water pipe embedded in the ground or a synthetic resin conduit incorporating a power line or a communication line, and in particular, a fluid transport pipe The present invention relates to a protective sheet for preventing a synthetic resin underground underground pipe used as a power pipe from being damaged at the time of excavation work using an excavating equipment such as a bilge or hydraulic excavator.

流体輸送管、例えば上下水道管やガス管として近年、合成樹脂管を使用することが普及し、なかでも、ポリエチレン管は可撓性を有するとともに、軽量で施工が容易であり、地中に埋設しても腐食しない利点を有することから、その普及は目覚ましいものがある。   In recent years, it has become widespread to use synthetic resin pipes as fluid transport pipes, for example, water and sewage pipes and gas pipes, and among them, polyethylene pipes have flexibility and are lightweight and easy to construct, and are buried in the ground Its spread is remarkable because it has the advantage that it does not corrode.

ところが、このポリエチレン管は衝撃強度に弱いという難点があり、埋設後に行われる工事、例えば、上下水道管工事や、電線管の工事の際に掘削機器で地面を掘削する際に、掘削機の爪やツルハシが既に埋設されているポリエチレン管に当たって、ポリエチレン管が傷つけられることがある。このため、従来、流体輸送管や電線管等を埋設する際に、土中での腐食劣化が少ない合成樹脂製の防護シートを巻付けて流体輸送管の耐衝撃性を高めるようにすることが行われている。   However, this polyethylene pipe has a drawback that it is weak in impact strength, and the nails of the excavator when digging the ground with a digging equipment at the time of construction carried out after burial, for example, water and sewage pipe construction and electric pipe construction. The polyethylene pipe may be damaged by hitting the polyethylene pipe in which the crane has already been buried. For this reason, conventionally, when embedding a fluid transport pipe, a conduit or the like, a protective sheet made of a synthetic resin with little corrosion deterioration in the soil may be wound to improve the impact resistance of the fluid transport pipe. It has been done.

このような合成樹脂製の防護シートとして、延伸及び解繊して得られたポリプロピレンからなる解繊糸を織成又は編成した可撓性を有するシートにクッション材を積層したシート材や(特許文献1)、合成樹脂製繊維やテープを織り込んだ織布に合成樹脂綿(フェルト)または不織布を植え付けたもの、あるいは穴開きシートに合成樹脂綿(フェルト)又は不織布、織布を配置して一体化したもの(特許文献2)、繊維層と弾性体からなるシートを地中埋設管の周囲に配置して埋設管を保護するようにしたもの(特許文献3)が提案されている。   As such a protective sheet made of synthetic resin, a sheet material obtained by laminating a cushioning material on a flexible sheet obtained by weaving or knitting a defibrated yarn made of polypropylene obtained by stretching and defibrating (patent document 1) A synthetic resin cotton (felt) or non-woven fabric planted in a woven fabric woven with synthetic resin fibers or tapes, or a synthetic resin cotton (felt) or non-woven fabric or woven fabric in a perforated sheet In addition, a sheet having a fiber layer and an elastic body is disposed around the underground buried pipe to protect the buried pipe (Patent Document 3).

特開2007−132370号公報JP 2007-132370 A 特開平10−73198号公報Japanese Patent Application Laid-Open No. 10-73198 特開2000−46284号公報Japanese Patent Laid-Open No. 2000-46284

掘削作業時に掘削機器で地中埋設管が損傷することを防止する従来の防護シートでは、衝撃に対する強度が十分ではなく、油圧ショベルやツルハシが防護シート貫通することから、何層にも巻回する必要があり、作業性・経済性に劣るという問題があった。   The conventional protective sheet that prevents the underground pipe from being damaged by the drilling equipment at the time of the drilling operation has insufficient strength against impact, and the hydraulic shovel and the crane have through the protective sheet, so it winds in multiple layers There is a problem that it is necessary, and it is inferior in workability and economy.

本発明は、このような点に着目してなされたもので、掘削機器の尖鋭な先端による衝撃に対する耐衝撃性を備え、作業性・経済性に優れた防護シートを提供することを目的とする。   The present invention has been made in view of such points, and an object thereof is to provide a protective sheet excellent in workability and economy, provided with impact resistance against impact by a sharp tip of a drilling device. .

前述の目的を達成するために、請求項1に記載した本発明では、地中に埋設される合成樹脂製流体輸送管あるいは合成樹脂製電線管の防護シートであって、合成樹脂繊維製の基布と、合成樹脂製綿繊維層とを有し、合成樹脂繊維製の基布の少なくとも一面に合成樹脂製綿繊維層を配置し、合成樹脂繊維製の基布と合成樹脂製綿繊維層とをニードリング加工により一体化してあることを特徴としている。   In order to achieve the above object, according to the present invention as set forth in claim 1, there is provided a protective sheet for a synthetic resin fluid transport pipe or synthetic resin electric conduit embedded in the ground, wherein the base is made of synthetic resin fiber. It has a cloth and a synthetic resin cotton fiber layer, and a synthetic resin cotton fiber layer is disposed on at least one surface of the synthetic resin fiber base fabric, and the synthetic resin fiber base fabric and the synthetic resin cotton fiber layer It is characterized in that it is integrated by needling processing.

請求項2に記載した本発明は、請求項1に開示した構成に加えて、合成樹脂製綿繊維層を管路側に配置するとともに、地表側に合成樹脂繊維製の基布を位置させ、合成樹脂製綿繊維層を管路表示色の合成樹脂製綿繊維で形成するとともに、合成樹脂繊維製の基布を白色を含む淡色の基布で構成し、ニードリング加工することにより、管路表示色である合成樹脂製綿繊維を基布の表層まで引き出し、管路表示色が外面に表示されるように構成したことを特徴としている。   According to the second aspect of the present invention, in addition to the constitution disclosed in the first aspect, the synthetic resin-made cotton fiber layer is disposed on the pipeline side, and the synthetic resin fiber base cloth is positioned on the ground side to synthesize While forming a resin-made cotton fiber layer with synthetic resin-made cotton fibers of a pipe line indication color, constituting a synthetic resin fiber base cloth with a light-colored base cloth containing white, and carrying out a needling process, a pipe line display It is characterized in that a synthetic resin-made cotton fiber, which is a color, is drawn to the surface layer of the base fabric, and a channel display color is displayed on the outer surface.

請求項3に記載した本発明は、請求項1に開示した構成に加えて、合成樹脂繊維製基布の両面に合成樹脂製綿繊維層を配置し、合成樹脂繊維製基布の地表側に配置した合成樹脂製綿繊維層を管路表示色の合成樹脂製綿繊維で形成したことを特徴としている。   In the present invention described in claim 3, in addition to the constitution disclosed in claim 1, the synthetic resin fiber base fabric is provided with a synthetic resin fiber cotton fiber layer, and the surface side of the synthetic resin fiber base fabric is provided. It is characterized in that the disposed synthetic resin-made cotton fiber layer is formed of synthetic resin-made cotton fibers of a pipe display color.

本発明では、合成樹脂繊維を織成あるいは編成することで形成された合成樹脂繊維製の基布と、合成樹脂製の綿繊維層(フエルト層)とを有し、合成樹脂繊維製の基布の少なくとも一面に合成樹脂製綿繊維層を配置し、合成樹脂繊維製の基布と合成樹脂製綿繊維層とをニードリング加工することで合成樹脂製綿繊維層を構成している単位繊維糸が基布を貫通して基布表面に露出して基布と合成樹脂製単位繊維糸とが絡みあい、単なる積層や接着あるいは縫合で一体化するものにくらべて組織が緻密になることで、同じ目付量でも強固に一体化する。そして、シートの管路側に合成樹脂製綿繊維層を位置させることで、強靭な基布が外側に、衝撃吸収性を有する合成樹脂製綿層が埋設配管表面を保護することになるから、掘削作業時にツルハシや油圧ショベル等の掘削機器の尖鋭な先端がこの防護シートに衝突することがあっても、その衝撃力をニードリング加工により強固に一体化した合成樹脂繊維製の基布と合成樹脂製綿繊維層が吸収して、管路を有効に保護するができる。   In the present invention, a synthetic resin fiber base fabric formed by weaving or knitting a synthetic resin fiber, and a synthetic resin fiber base fabric made of synthetic resin fiber, and a synthetic resin fiber base fabric A unit fiber yarn constituting a synthetic resin-made cotton fiber layer by arranging a synthetic resin-made cotton fiber layer on at least one surface of the above and subjecting a synthetic resin fiber base fabric and the synthetic resin-made cotton fiber layer to needling Penetrates the base fabric and is exposed on the surface of the base fabric, and the base fabric and the unit yarn made of synthetic resin become entangled, and the structure becomes finer as compared with those integrated by mere lamination, adhesion or stitching. It integrates firmly with the same coating weight. Then, by positioning the synthetic resin-made cotton fiber layer on the duct side of the sheet, the strong base fabric will have the shock-absorbing synthetic resin-made cotton layer on the outside, and the surface of the buried pipe will be protected. Even if the sharp tip of an excavating equipment such as a bilge or hydraulic excavator collides with this protective sheet during work, the synthetic resin fiber base cloth and synthetic resin integrated the impact force strongly by needling processing The cotton fiber layer can absorb and effectively protect the pipeline.

また、合成樹脂製綿繊維層を構成している合成樹脂製綿繊維を管路表示色にした場合には、基布表面に管路表示色が表出することになるから、シートの路面側に管路表示色が表示されることにり、掘削作業時に既設配管があること及びどのような種類の埋設管であるかを作業者が容易に把握することができ不測の事故を回避することができる。   Moreover, when the synthetic resin-made cotton fiber which is comprising the synthetic resin-made cotton fiber layer is made into a pipe line display color, since a pipe line display color will appear on the base cloth surface, the road surface side of the sheet The display color of the pipeline will be displayed on the screen, and the operator can easily grasp that there is an existing pipe at the time of excavation work and what kind of buried pipe it is, and avoid unforeseen accidents Can.

本発明の一実施形態を示す取り出し斜視図である。It is a taking-out perspective view showing one embodiment of the present invention. 防護シートの一実施形態を示す断面図である。It is a sectional view showing one embodiment of a protection sheet. 埋設状態での断面図である。It is a sectional view in the state of burial. 防護シートの別の実施形態を示す断面図である。It is a sectional view showing another embodiment of a protection sheet. 別の埋設状態を示す断面図である。It is sectional drawing which shows another embedding | flush-mounting state.

本発明に係る地中埋設管路の防護シートの一実施形態を図面に基づき説明する。
図1は、地中埋設管(1)を示す斜視図である。この地中埋設管(1)は、上下水道管・ガス管等の合成樹脂製流体輸送管や、内部に電力線あるいは通信線を内装した合成樹脂製電線管として用いられている合成樹脂製管路(3)の外周に防護シート(2)を巻回し、その外周に結束バンドや結束テープなどの保持具(4)を適当間隔おきに結束することで合成樹脂製管路(3)に防護シート(2)を一体となるように留めつけている。
One embodiment of a protection sheet for a buried underground according to the present invention will be described based on the drawings.
FIG. 1 is a perspective view showing the underground underground pipe (1). This underground underground pipe (1) is a synthetic resin fluid transport pipe such as water and sewage pipe and gas pipe, or a synthetic resin pipe line used as a synthetic resin electric conduit internally provided with a power line or communication line. A protective sheet (2) is wound around the outer periphery of (3), and a protective sheet (4) made of a binding band or a binding tape is bound on the outer periphery at an appropriate interval to protect the synthetic resin pipeline (3) (2) is fastened in one piece.

防護シート(2)は、図2に示すように、長期の地中埋設に耐えるポリエステル等の合成樹脂繊維で形成された基布(5)と、同じくポリエステル等の合成樹脂製綿繊維からなる層(6)とで構成されており、ポリエステル等の合成樹脂糸を平織・綾織・繻子織等に織成した織布あるいは編成した編地からなる基布(5)の一面にポリエステル等の合成樹脂製綿繊維の層(フェルト層)(6)を沿わせて配置し、基布(5)側からニードリング加工することで、フェルト層(6)を構成している合成樹脂製綿繊維を基布(5)の表面まで引き出し、基布繊維と基布(5)の隙間に合成樹脂製綿繊維がしっかりと絡みついて一体化させてある。   The protective sheet (2) is, as shown in FIG. 2, a base fabric (5) formed of a synthetic resin fiber such as polyester enduring long-term underground burial, and a layer made of a synthetic resin cotton fiber such as polyester (6), and a synthetic resin such as polyester is formed on one side of a base fabric (5) comprising a woven or knitted fabric in which synthetic resin yarns such as polyester are woven into plain weave, twill weave, satin weave etc. A layer of cotton fiber (felt layer) (6) is placed along, and by needling processing from the base fabric (5) side, a base fabric of synthetic resin cotton fiber that constitutes the felt layer (6) The surface is drawn to the surface of (5), and a synthetic resin-made cotton fiber is firmly entangled and integrated in the gap between the base fabric fiber and the base fabric (5).

この場合、フェルト層(6)を構成している合成樹脂製綿繊維を管路表示色のもので構成するとともに、基布(5)を構成している基布繊維に白色ないし淡色のものを使用することで、基布(5)の表面に管路表示色が表出することになる。このように構成することで基布(5)の表面にフェルト層(6)を構成している合成樹脂製綿繊維の色合いを確りと表出させることができる。   In this case, the synthetic resin-made cotton fibers constituting the felt layer (6) are made of those of the channel display color, and the base cloth fibers constituting the base cloth (5) are white to light in color. By using it, a pipeline display color will appear on the surface of the base fabric (5). By configuring in this manner, the color of the synthetic resin-made cotton fiber that constitutes the felt layer (6) on the surface of the base fabric (5) can be exposed with certainty.

図3に示す合成樹脂製管路(3)の埋設時には、掘削溝に配管された合成樹脂製管路(3)の外周面側にフェルト層(6)が、基布(5)が外側にそれぞれ位置する状態で、フェルト層(6)を合成樹脂製管路(3)の外周面に当接させて巻回し、基布(5)の外側に結束バンドや結束テープなどの保持具(4)を適当な間隔置きに位置させてしっかりと固定する。その後、合成樹脂製管路(3)の外周を防護シート(2)で被覆した埋設地中管(1)が敷設されている掘削溝を埋め戻す。   At the time of embedding of the synthetic resin pipe line (3) shown in FIG. 3, the felt layer (6) and the base cloth (5) are on the outer peripheral surface side of the synthetic resin pipe line (3). In each positioned state, the felt layer (6) is brought into contact with the outer peripheral surface of the synthetic resin pipe line (3) and wound, and a holder (4) such as a binding band or a binding tape is provided on the outside of the base cloth (5). Place the) at appropriate intervals and fix it firmly. After that, the digging groove in which the buried underground pipe (1) in which the outer periphery of the synthetic resin pipe line (3) is covered with the protective sheet (2) is laid is filled back.

図4は、防護シート(2)の別の実施形態を示しており、この実施形態では、ポリエステル等の合成樹脂繊維で形成された基布(5)を同じくポリエステル等の合成樹脂製綿繊維で構成されている綿層(フエルト層)(6a)(6b)で挟み込むようにしている。この場合、基布(5)の一側に配置するフェルト層(6a)と他側に配置するフェルト層(6b)とでは、その厚みを変えてある。   FIG. 4 shows another embodiment of the protective sheet (2). In this embodiment, the base fabric (5) formed of synthetic resin fibers such as polyester is also made of synthetic resin cotton fibers such as polyester. The cotton layer (felt layer) (6a) (6b) that is configured is sandwiched. In this case, the thicknesses of the felt layer (6a) disposed on one side of the base fabric (5) and the felt layer (6b) disposed on the other side are changed.

厚いフェルト層(6a)と基布(5)とを重ね合わせて状態で、基布(5)側からニードリング加工することにより、厚いフェルト層(6a)を構成している合成樹脂製綿繊維と基布(5)の基布繊維とを絡み合わせて、厚いフェルト層(6a)と基布(5)とを一体化させ、しかるのち、基布(5)の露出面に厚味の薄い管路表示色としてのフェルト層(6b)を沿わせて配置し、薄いフェルト層(6b)側からニードリング加工することにより、厚いフェルト層(6a)・基布(5)・薄いフェルト層(6b)を一体化させる。このように形成した防護シート(2)を使用する場合には、厚いフェルト層(6a)が合成樹脂製管路(3)の外周面側に、管路表示色としての薄いフェルト層(6b)が地表側に位置する状態で合成樹脂製管路(3)に巻回固定して地中埋設管(1)を形成することになる。   Synthetic resin-made cotton fiber which constitutes thick felt layer (6a) by needling processing from the side of base fabric (5) in a state where thick felt layer (6a) and base fabric (5) are piled up And the base fabric fiber of the base fabric (5) are entangled to integrate the thick felt layer (6a) and the base fabric (5), and after that, the thickness of the thin base is thin on the exposed surface of the base fabric (5). A felt layer (6b) as a pipeline indication color is placed along, and by needling processing from the thin felt layer (6b) side, thick felt layer (6a), base fabric (5), thin felt layer (6) Integrate 6b). In the case of using the protective sheet (2) formed in this manner, a thick felt layer (6a) is formed on the outer peripheral surface side of the synthetic resin pipe (3), and a thin felt layer (6b) as a pipe display color Is wound and fixed to the synthetic resin pipe line (3) in a state of being located on the ground surface side to form the underground buried pipe (1).

この実施態様では、基布(5)と厚いフェルト層(6a)とをニードリング加工して一体化 させたのち、基布(5)の露出面に薄いフェルト層(6b)配置してニードリング加工する二段階のニードリングを加工を施しているが、これは厚いフェルト層(6a)・基布(5)・薄いフェルト層(6b)を一挙にニードリング加工するようにしてもよい。   In this embodiment, after the base fabric (5) and the thick felt layer (6a) are needling-processed and integrated, a thin felt layer (6b) is disposed on the exposed surface of the base fabric (5) to obtain the needling. The two-step needling to be processed is processed, but thick felt layers (6a), base fabrics (5) and thin felt layers (6b) may be needled at once.

なお、この基布を2つの綿繊維層で挟持する実施形態では、厚いフェルト層(6a)及び基布(5)の色目には特別な制約はないが、薄いフェルト層(6b)には管路表示色の繊維を使用したフェルトで構成することが好ましい。このようにすることで、防護シート(2)の一面が管路表示色で構成されることになる。管路表示色で構成した薄いフェルト層(6b)は、安価なグレー系等のフェルトに比して高価ではあるが、少量で管路表示色を明瞭に表示することが出来る。   In the embodiment in which the base fabric is sandwiched between two cotton fiber layers, the color of the thick felt layer (6a) and the base fabric (5) is not particularly limited, but the thin felt layer (6b) is a tube. It is preferable to comprise with the felt which used the fiber of a road indication color. By doing this, one surface of the protective sheet (2) is made of the pipeline display color. The thin felt layer (6b) composed of the pipeline display color is more expensive than the inexpensive gray felt etc., but the pipeline display color can be clearly displayed with a small amount.

ここで、管路表示色とは、地域や埋設管敷設企業体での指定色を指し、電力ケーブルではオレンジ系、通信ケーブルでは赤系、水道ではブルー系、下水道では茶系、ガスでは緑系を指定していることが多い。   Here, the pipeline display color refers to the designated color in a region or a buried pipe laying company body, orange for power cables, red for communication cables, blue for water supplies, tea for sewers, and green for gases Is often specified.

図5は、防護シート(2)を使用しての別の埋設形態を示しており、掘削溝に合成樹脂製管路(3)を敷設したのち、合成樹脂製管路(3)の上面を軽く覆う程度まで土砂を投入し、その段階で合成樹脂製本管(3)の上方に沿ってフェルト層(6)・(6a)が合成樹脂製管路(3)側に、管路表示色が表出している面を地表側に位置させた状態で防護シート(2)を配設し、その上から土砂を投入して埋め戻すようにしたものである。   FIG. 5 shows another embedding form using the protective sheet (2), and after laying the synthetic resin pipe line (3) in the digging groove, the upper surface of the synthetic resin pipe line (3) is Earth and sand are introduced to the extent that they lightly cover, and at that stage, along the upper side of the synthetic resin main pipe (3), the felt layers (6) and (6a) are on the synthetic resin pipe line (3) side, and the color of the pipe line The protection sheet (2) is disposed in a state where the exposed surface is located on the ground side, and earth and sand are poured from the top to backfill it.

この埋設形態のように、防護シート(2)を合成樹脂製管路(3)に巻回しない場合には、合成樹脂製管路(3)の上面を軽く覆う程度まで土砂を投入し、その段階で合成樹脂製管路(3)の上方に沿って防護シート(2)を配設し、その後土砂をさらに投入して埋め戻すようにすると、復旧作業時の土砂投入による衝撃で防護シート(2)がずれ動くことが少なくなり、合成樹脂製管路(3)の埋設位置を比較的正確に表示できることになる。   When the protective sheet (2) is not wound around the synthetic resin pipe line (3) as in this buried form, the earth and sand is introduced to such an extent that the upper surface of the synthetic resin pipe line (3) is lightly covered If the protection sheet (2) is disposed along the upper side of the synthetic resin pipe line (3) at the stage, and then earth and sand are further injected and backfilled, the protection sheet 2) The shift movement is reduced, and the embedded position of the synthetic resin pipeline (3) can be displayed relatively accurately.

地中に合成樹脂製流体輸送管あるいは合成樹脂製電線管を埋設するインフラ整備工事に適用することが出来る。   The present invention can be applied to infrastructure maintenance work in which a synthetic resin fluid transport pipe or a synthetic resin conduit is buried in the ground.

1…地中埋設管、2…防護シート、3…合成樹脂製管路、4…保持具、5…合成樹脂繊維製の基布、6・6a・6b…合成樹脂製綿繊維層(フェルト層)。   DESCRIPTION OF SYMBOLS 1 ... underground burial pipe | tube 2: protection sheet | seat 3 ... synthetic resin pipe line 4: holder, 5 ... base fabric made of synthetic resin fiber 6, 6a 6b ... synthetic resin cotton fiber layer (felt layer ).

Claims (3)

地中に埋設される合成樹脂製地中管路へのツルハシや油圧ショベル等に起因する損傷から管路を防護する防護シート(2)であって、合成樹脂繊維製の基布(5)と、合成樹脂製綿繊維層(6)とを有し、合成樹脂繊維製の基布(5)の少なくとも一面に合成樹脂製綿繊維層(6)を配置し、合成樹脂繊維製の基布(5)と合成樹脂製綿繊維層(6)とをニードリング加工により一体化してあることを特徴とする地中埋設管路の防護シート。   A protective sheet (2) for protecting pipelines from damage caused by cranes, hydraulic shovels, etc. to synthetic resin underground pipelines buried in the ground, which is made of synthetic resin fiber base fabric (5) And a synthetic resin fiber base fabric (6) having a synthetic resin fiber base fabric (6) and at least one surface of the synthetic resin fiber base fabric (6) A protective sheet for a buried underground conduit characterized in that 5) and a synthetic resin-made cotton fiber layer (6) are integrated by needling. 合成樹脂製綿繊維層(6)を管路側に配置するとともに、地表側に合成樹脂繊維製の基布(5)を位置させ、合成樹脂製綿繊維層(6)を管路表示色の合成樹脂製綿繊維で形成するとともに、合成樹脂繊維製の基布(5)を白色を含む淡色の基布(5)で構成してある請求項1に記載した地中埋設管路の防護シート。   A synthetic resin-made cotton fiber layer (6) is disposed on the pipeline side, and a synthetic resin fiber base fabric (5) is positioned on the ground side, and the synthetic resin-made cotton fiber layer (6) 2. A protective sheet for underground underground ducts according to claim 1, wherein said synthetic resin fiber base fabric (5) is made of resin-made cotton fibers and is made of a light-colored base fabric (5) containing white. 基布(5)の両面に合成樹脂製綿繊維層(6a)(6b)を配置し、基布(5)の地表側に配置した合成樹脂製綿繊維層(6b)を管路表示色の合成樹脂製綿繊維で形成してある請求項1に記載した地中埋設管路の防護シート。   Cotton fiber layers (6a) and (6b) made of synthetic resin are disposed on both sides of base fabric (5), and cotton fiber layers (6b) made of synthetic resin placed on the ground side of base fabric (5) The protective sheet for the underground pipeline according to claim 1, which is made of synthetic resin-made cotton fibers.
JP2017075770A 2017-04-06 2017-04-06 Protective sheet of underground pipe conduit Pending JP2018179056A (en)

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CN111853427A (en) * 2020-07-21 2020-10-30 赵士威 Utilize impulse to distinguish and prevent mistake underground piping of digging

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