An aerial photograph of the Gironde to locate “to the nearest centimeter” all the buried networks

CBlue, no mist on the ground, or flooded areas. Furthermore, An aerial shooting must be perfect. However, Its realization is subject to drastic requirements. For example, An identity photo for passport, next to it is nothing. Meanwhile, To avoid the damaged shadows, there is no cloud on the horizon. Consequently,

The device which was responsible for photographing these days 40 % of the Gironde wisely awaited the right moment. Meanwhile, Posted at an altitude of 7. Moreover, 000 feet, or about 2,200 meters, this plane covers between 115 and 140 square kilometers per hour of flight thanks to its latest generation on -board camera. Nevertheless, These high-tech tools belong to Aerodata France. For example, a company specializing in air mapping since 2001 which, for its operations in the Southwest, radiates from Agen airport.

The mission entrusted to him by the Departmental Syndicat Energies et Environnement de la Gironde (SDEEG). Furthermore, its partners aims to establish a simplified street plan (PCRS). Furthermore, It is in aerial photograph gironde locate “to fact a card background, seen “on a very large scale” which will be available by computer. In addition, The precision of the on -board sensors is such (very high resolution 5 centimeters) that it will even be possible to see the key to certain buried networks. Meanwhile, devices for access to the valves that flush the ground. However, Compared to the data used so far. the resolution will be “16 times higher”, according to Joël Planchet, operations manager at Aerodata.

East of the Gironde – Aerial photograph gironde locate "to

Eleven Girondins economic. institutional actors have signed an agreement for the realization of this “cartographic repository”: the department and its 6,400 kilometers of roads, Enedis, GRDF, Regaz, the electricity management of the south of La Réole and therefore the SDEEG, which manages the public lighting of 399 municipalities or inter -municipal structures. Drinking water suppliers or sanitation establishments could be associated with it later. “I am very aerial photograph gironde locate “to proud of this large collaboration,” said Xavier Pintat, mayor of Soulac-sur-Mer and president of the SDEEG.

On this background, each operator will superimpose the plans of their own networks, as a layer is applied. These diagrams will visually merge with these air shots. where agricultural and natural spaces appear, roads, homes and all types of constructions. For surface arrangements, this instrument will also be useful. Before the implementation of a roundabout or parking, it will be easier to perform simulations.

The total cost of this tool for multiple uses, which includes a big work of image processing, amounts to 1.9 million euros. The military land. the Blayais nuclear power plant, as well as the Bordeaux metropolitan area, has been excluded from this aerial.

The challenge for Enedis and GRDF

This is the result of the anti-enduring reform of 2012. Additionally, The objective is first to avoid accidents. When we dig on the occasion aerial photograph gironde locate “to of work of all order. we imagine the danger if a cable, or a pipe, were to be affected by a construction machine. “By year. in the department, several hundred of our works are damaged, cable tears for example,” says François-Xavier de Boutray, director of Enedis for the Girondin territories. In general, it is the fact of external actors, by poor knowledge of the mapping of existing networks. ”

François-Xavier de Boutray continues: “The interest of this PCRS is that it will allow us to deliver extremely reliable information. even more reliable than that which we could provide until now, with a precision level of 5 centimeters. It goes in the direction of much greater security. »»

Concordance optimale

For the territorial director of GRDF. Maïlys Huet, it is an evolution of primary importance: “Currently, the responses to the declarations of work are based on disparate plan funds, making the precise aerial photograph gironde locate “to repositioning of networks by the contracting authorities. The generalization of the PCRS will facilitate the production of the synthesis plans of networks. the marking operations of networks, key step in the preparation of sites, and thus effectively contribute to the prevention of damage to works. »»

“We are in a department that moves a lot. This card will be updated over the work”

An instrument as sharp as a PCRS premunicates against location errors. The concordance between the effective location of all these underground conduits. their positioning on this cartographic base must be optimal, without gap, which necessarily implies updating. “We are in a department that moves a lot,” recalls the deputy director general of the SDEEG, Sophie Labatut. This card will be updated during the work. By surveyors or using drones or cars with on -board cameras. »»

A legal point: a 2018 decree provides that all operators will have the obligation aerial photograph gironde locate “to to use a PCRS from 1^is January 2026. when this digital document exists. In Gironde, this is now the case.