Transporting gas from the Marib’ deposits in the middle of the country to Bahlaf on the coast of the Gulf of Aden, a YEMEN LNG “pipe” runs across almost 320 kilometres of sandy, stony and occasionally very mountainous deserts.
A 5 km section, permitting the passage from a high plateau reaching up to an altitude of 1,700 m to a plain lying 800 m below, is subject to hard geotechnical conditions: surrounded by high dolomitic cliffs where occasionally massive rockfalls occur, and located in a barely stable slope, this section also crosses over a series of oueds that, during the monsoon season, erode everything lying in their path.
Following an expertise/diagnostic assignment carried out in 2010 concerning the damages related to this torrential erosion, TERRASOL was once again called on by TOTAL in March 2012, this time to second a TERRASOL engineer on site for a one month period. His assignments were:
- An expert assessment of all the redevelopment works carried out to date,
- Supervision of works on a gabion and rockfill hydraulic structure.
- Disorder diagnostic
- Expertise of works already achieved
- Supervision of reinforcement works