ABSTRACT
This chapter describes the details of the scheme and the relationship between landslide movement and climate. In 2000 in the southern area of Lyon, a landslide 30 m in depth and 300 m width occurred. To solve the problem, 600,000 m3 of material was removed from the slope to reduce the movement at the upslope part of the railway. In the landslip, small diameter siphon drains are placed in vertical drilled drainage wells. Limitations of the design of the siphon drainage system included a wide area to drain with a very shallow gradient of the finished ground surface that would have required the use lengths of siphon tubing in excess of 300 m. The electro-pneumatic pump has been developed to stabilise landslides by intercepting groundwater at greater depths or lowering groundwater to lower levels than that capable using siphon drain techniques.
