FR2538500A1 - Material for identifying underground channels. - Google Patents
Material for identifying underground channels. Download PDFInfo
- Publication number
- FR2538500A1 FR2538500A1 FR8222197A FR8222197A FR2538500A1 FR 2538500 A1 FR2538500 A1 FR 2538500A1 FR 8222197 A FR8222197 A FR 8222197A FR 8222197 A FR8222197 A FR 8222197A FR 2538500 A1 FR2538500 A1 FR 2538500A1
- Authority
- FR
- France
- Prior art keywords
- elongation
- strips
- underground pipes
- locating
- coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
MATERIAU POUR LE REPERAGE
DES CANALISATIONS SOUTERRAINES
L'invention a pour objet un matériau-pour le repérage des canalisations souterraines.MARKING MATERIAL
UNDERGROUND PIPES
The subject of the invention is a material for locating underground pipes.
Pour permettre le repérage des canalisations souterraines, il est connu de les recouvrir de matériaux se présentant sous forme de grillages habituellement en matière plastique. To allow the identification of underground pipes, it is known to cover them with materials in the form of screens usually made of plastic.
Pour faciliter le repérage lorsque les fouilles sont réalisées à la pelle mécanique, il a en outre été proposé d'associer au grillage proprement dit des éléments qui se présentent sous forme de bandes longitudinales rectilignes et ont des résistances à l'allongement et à la rupture différentes de celles du grillage lui-même. To facilitate the identification when the excavations are carried out with a mechanical shovel, it has also been proposed to associate with the actual grating elements which are in the form of rectilinear longitudinal strips and have resistance to elongation and to breaking. different from those of the wire itself.
En pratique, les résistances des éléments en bandes sont supérieures. à celles du grillage, mais leur allongement est faible. Il en résulte que le but recherché n'est pas toujours atteint. Il s'avère en effet que, lorsque le godet d'une pelle mécanique provoque la rupture de l'ensemble grillage et bandes, les morceaux de bandes arrachés par le godet se rétractent dans la masse de matériaux saisis par le godet et que, de part et d'autre de la fouille, les bandes dont ont été séparés les morceaux précités se rétractent elles-mêmes plus ou moins dans ou le long des parois de la fouille. Le conducteur de la pelle ne décèle donc pas toujours la présence du matériau de repérage et risque ainsi de ne pas repérer la canalisation sous-jacente.In practice, the resistances of the strip elements are higher. to those of the mesh, but their elongation is low. As a result, the desired goal is not always achieved. It turns out that, when the bucket of a mechanical shovel causes the breakage of the mesh and strips assembly, the pieces of strips torn off by the bucket retract into the mass of materials grabbed by the bucket and that, on either side of the excavation, the strips from which the aforementioned pieces have been separated retract themselves more or less in or along the walls of the excavation. The shovel operator therefore does not always detect the presence of the marking material and thus risks not locating the underlying pipe.
L'invention écarte ce risque. Elle a pour objet à cet effet l'application nouvelle à la constitution du matériau de repérage d'une matière ayant la fois un coefficient d'allongement très élevé et une forte rémanence pour qu'après sa rupture consécutive à son allongement -elle demeure à l'état allongé. The invention eliminates this risk. It has for this purpose the new application to the constitution of the locating material of a material having both a very high coefficient of elongation and a high remanence so that after its rupture following its elongation -it remains at the lying state.
Il est dès lors concevable que si le matériau de repérage est constitué en une telle matière et est rompu lors d'une fouille réalisée par une pelle mécanique, des morceaux étirés de ce matériau apparaissent visiblement, d'une part, le long des parois de la fouille et, d'autre part, sur les côtés du godet de la pelle. It is therefore conceivable that if the locating material is made of such a material and is broken during an excavation carried out by a mechanical shovel, stretched pieces of this material visibly appear, on the one hand, along the walls of the excavation and, on the other hand, on the sides of the bucket of the shovel.
Pour la réalisation d'un matériau de repérage de canalisations souterraines, cette matière est utilisable sous forme de bandes rectilignes ; et un tel matériau peut être constitué par une ou de préférence par au moins deux bandes parallèles reliées entre elles par des éléments quelconques, par exemple un ou des fils en matière plastique. For the production of a material for locating underground pipes, this material can be used in the form of rectilinear strips; and such a material may consist of one or preferably by at least two parallel strips connected to one another by any elements, for example one or more plastics wires.
Suivant une forme préférée d'exécution, de telles bandes sont toutefois associées à un grillage en matière plastique sur lequel elles sont montées de façon libre, afin de pouvoir librement s'allonger, la seule condition impérative étant que le grillage soit constitué en une matière lui conférant un allongement inférieur à celui des bandes. Le nombre de ces bandes sur le grillage est avantageusement de deux. According to a preferred embodiment, such strips are however associated with a plastic mesh on which they are freely mounted, in order to be able to freely extend, the only imperative condition being that the mesh be made of a material. giving it a lower elongation than that of the strips. The number of these bands on the grid is advantageously two.
Diverses matières conviennent à la réalisation de ces bandes, sous réserve de posséder un coefficient d'allongement élevé et une forte rémanence. C'est ainsi qu'à titre d'exemple le matériau de repérage objet de l'invention est constitué par deux bandes parallèles en un polymère à base de polypropylène peu oupas orienté ou à base de copolymère éthylène-acétate de vinyle, reliées entre elles par un grillage en polyéthylène haute ou basse densité. Various materials are suitable for the production of these bands, provided that they have a high coefficient of elongation and a high remanence. Thus, for example, the locating material which is the subject of the invention consists of two parallel strips of a polymer based on polypropylene which is not very oriented or based on an ethylene-vinyl acetate copolymer, linked together by a mesh of high or low density polyethylene.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8222197A FR2538500B3 (en) | 1982-12-28 | 1982-12-28 | MATERIAL FOR LOCATING UNDERGROUND PIPES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8222197A FR2538500B3 (en) | 1982-12-28 | 1982-12-28 | MATERIAL FOR LOCATING UNDERGROUND PIPES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2538500A1 true FR2538500A1 (en) | 1984-06-29 |
| FR2538500B3 FR2538500B3 (en) | 1985-12-06 |
Family
ID=9280759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8222197A Expired FR2538500B3 (en) | 1982-12-28 | 1982-12-28 | MATERIAL FOR LOCATING UNDERGROUND PIPES |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2538500B3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2697094A1 (en) * | 1992-10-15 | 1994-04-22 | Plymouth Francaise Sa | Underground pipe or cable position indicator - consists of support with elongated marker, e.g. of polypropylene, laid in ground above it |
-
1982
- 1982-12-28 FR FR8222197A patent/FR2538500B3/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2697094A1 (en) * | 1992-10-15 | 1994-04-22 | Plymouth Francaise Sa | Underground pipe or cable position indicator - consists of support with elongated marker, e.g. of polypropylene, laid in ground above it |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2538500B3 (en) | 1985-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1237901A (en) | Buried pipe localising materials | |
| WO1982003152A1 (en) | Breeding and/or storage cage for aquatic animals | |
| GT198500001A (en) | TAPE INDICATOR OF IMPROPER AND OPACIFIC MANIPULATION DORA BY TENSION | |
| CA1037793A (en) | Reinforcement cable for objects made of flexible materials or easily deformable | |
| FR2538500A1 (en) | Material for identifying underground channels. | |
| US6477746B1 (en) | Releasable ball-lock cable tie | |
| FR2376487A1 (en) | RETURN ROLLER FOR MAGNETIC TAPE RECORDING AND / OR REPRODUCTION DEVICE | |
| FR2529007A1 (en) | ELECTRICAL CABLE SUPPORTING VERY SEVERE CONDITIONS OF USE | |
| FR2661967A1 (en) | BRAIDED SEALING PAD FOR SEALING PADS. | |
| PE36099A1 (en) | FISIL SHOCK TUBE AND ITS PROCESSING | |
| AR003302A1 (en) | A SEALING MEMBER THAT CAN BE COILED IN A SPIRAL WAY AROUND A LONG ARTICLE | |
| FR2633112A3 (en) | PROFILE OF THERMOPLASTIC MATERIAL OR THE LIKE FOR SIMULTANEOUSLY SUPPORTING LOW AND MEDIUM VOLTAGE ELECTRICAL CONDUCTORS, AND CAPABLE OF RECEIVING METAL EXTRUDES OF END REINFORCEMENT | |
| FR2418093A1 (en) | PLASTIC BINDING FOR PERFORATED SHEETS | |
| FR2434643A1 (en) | DEVICE FOR SEPARATING MATERIALS HAVING DIFFERENT MELTING POINTS | |
| FR2467091A1 (en) | VEHICLE PNEUMATIC COMPRISING A BELT | |
| KR960000473A (en) | How to detect the required length of the strip and wind it onto the belt assembly drum | |
| FR2596135A1 (en) | DEVICE FOR SIGNALING UNDERGROUND PIPES | |
| FR2538879A1 (en) | Detectable mesh for the protection of buried workings and method of manufacturing it | |
| EP0314589B1 (en) | Warning device for buried conduits | |
| FR2697094A1 (en) | Underground pipe or cable position indicator - consists of support with elongated marker, e.g. of polypropylene, laid in ground above it | |
| EP0702179B1 (en) | Warning device for visually indicating underground constructions | |
| CA1120678A (en) | Process for depositing a complex protective coating | |
| FR2593209A1 (en) | Wall hook with two covers | |
| EP0383696B1 (en) | Electrical wire for a protection netting | |
| FR2415054A1 (en) | TUBING FOR CONTAINERS WITH REINFORCING SLEEVE |