A 10-metre stretch of a seven-metre-high embankment slipped away from the railway line about half a mile north of Lingfield station yesterday (Thursday 19th January).
Cracks spread six metres on either side of the slip site, leading to fears it could get worse if action was not taken immediately
The railway was closed between Hurst Green and East Grinstead to let the repair team get to work.
Network Rail and Bam聽Nuttall are working to get trains running again by the middle of next week, if not sooner.
The embankment is built of Wealden Clay, a material that lies underneath most of the landslips that take place in Network Rail鈥檚 Southern region, including the major slip that took place at Cookspond, near East Grinstead, in 2020. Clay absorbs water, rather than draining, which makes it vulnerable to prolonged very wet weather and freezing conditions.
Repairs to this site will see a wall of sheet piles driven deep into the ground at the top of the slip site to stop it moving further and support the railway properly. Once the emergency repair is complete next week, work will begin on the longer-term fix for the site.
Network Rail鈥檚 route director for Sussex, Lucy McAuliffe, said: 鈥淚鈥檓 so sorry for this disruption to passengers, on top of so much disruption over the past months. My team is working round the clock to get this landslip fixed as soon as possible and our neighbours will see we have already got a team and equipment on site today (Thursday).
鈥淲e will be using Lingfield station as the base for the repair operation, along with the site itself in fields to the north of the village, so I鈥檇 like to apologise in advance to people who live nearby as you will see a great deal of action in the next week, with lots of people and machinery arriving to repair the damage.
鈥淭his railway through Lingfield was built in 1884, out of local Wealden clay, which is notoriously unsuitable for building railways on. Unfortunately, they didn鈥檛 know that then, and our passengers are suffering the consequences. In terms of timescales, we're aiming for the middle of next week and we will do what we can to get it open sooner.鈥�
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