特殊的图像已经重新出现了肯特最大的LANDSLIPS之一，突出了网络铁路维持海岸侧铁路线的基本工作。亚搏彩票软件官网
Original photographs of The Great Fall, a severe landslip at Folkestone Warren in December 1915, show train derailments and continued rail movement following the incident.
The railway line to Dover moved 50 metres towards the coastline and 1.5 million cubic metres of chalk fell into the sea following weeks of heavy rain.
这条线仍然关闭，直到1919年8月11日，第一次世界大战延迟了重新开放。
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Derek Butcher, a route asset manager at Network Rail, found the historic images in a filing cabinet while moving offices.
他说：“所有山体滑坡都被降雨量激活...... [该位置]具有相当复杂的地质形成粉笔覆盖粘土。从降雨从降雨中通过粉笔渗透并坐在粘土的顶部并饱和它，并导致山水划分。粉笔不能在粘土上以稳定的方式坐在泥土上。“
The kink in the line remains visible today, underscoring the severity of the incident.
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德里克说：“我们相信火车被粉彩箱中的信号盒提醒了山地板，并减慢了，发现自己的一部分，并从山顶上分开。他们能够撤离穿过隧道的乘客到福克斯通团站。
“火车停止后，有很大的运动......这就是它看起来如此可怕的原因。”
Landslips have been a major feature of the line since it opened in 1844. In 1877, two people died when part of the Martello Tunnel was destroyed. The line remained closed for three months afterwards.
The last major movement was recorded in 1939 but Derek said some ground movement had forced Network Rail to implement speed restrictions on the line in recent years. The need to take such precautions typically follows a very wet winter.
Landslides can occur anywhere and when they impact on railways, roads and other infrastructure, they can cause a lot of disruption.
由于地球变得越来越重，水力分开土壤颗粒，使它们不再锁定在一起 - 导致山泥板，因为该结构变得松动和不稳定。
Derek said: “The landslip [at Folkestone Warren] is still active… There are a number of ways that movement is controlled. Firstly, we monitor the location extensively with settlement points on a monthly basis.”
我们还使用光检测和测距（LIDAR）技术，激光扫描技术来记录景观点。数据有助于我们跟踪哪个位置正在移动。
Other techniques include boring holes in the ground to drain water, and building walls and other structures designed to stop the landslip from moving.
Meanwhile, Derek and his team regularly walk over locations at risk, comparing photographs to see whether the ground has moved.
附近，网络轨道近亚搏彩票软件官网年来遭到严重天气造成的另一个主要事件。去年3月，渠道游泳运动员加入了网络铁路，在一个巨大的项目之后在一个巨大的项目中庆祝莎士比亚搏彩票软件官网亚海滩的重新开放，以重建海洋保护多佛和福克斯通的铁路。2015年圣诞节之后，墙壁遭受了重大伤害。
修理2016年1月，当时第一个90,000吨的花岗岩摇滚装甲抵达现场。亚搏彩票软件官网网络轨道工程师致力于将岩石装甲沿着墙壁放置，并在铁路上安装一个新的行人桥，然后沿着海滩安装。
The railway and sea wall itself were opened in September 2016.
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What we’re doing to help prevent landslips and the delays they cause