The Network Rail Anglia region has 1091 km of earthworks, many of which are steep-sided embankments constructed of locally won fill materials in Victorian times. In order to extend the serviceable lifespan and to ensure the safety of the public with the ever-increasing demand on railway infrastructure, understanding the geological and geotechnical risks is of critical importance. Approaches to control risks and optimise mitigation works were adopted on the Control Period 5 framework with collaborative partners Network Rail, Volker Fitzpatrick and Atkins. Owing to budget constraints, harder engineering fixes applied early in the framework such as sheet-piled walls could no longer be readily adopted. Embankment renewal projects took on a more staged approach using shorter-design-life solutions with sustainable benefits. Detailed interrogation, phased investigation and zonation of sites allowed the targeting of higher-risk areas and intervening at a greater number of sites within the region, meeting Network Rail asset policy objectives. Slope movement monitoring combined with more detailed approaches was integral in assessing the instability causation, effective mitigation design and assessing performance during and following construction. A continued monitoring of lower-risk untreated areas and a future works strategy plan allowed greater control and proactive management of the asset.

中文翻译：

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东安格利亚的地面风险和铁路资产管理

英格利亚铁路网地区有1091公里的土方工程，其中许多是在维多利亚时代用当地获胜的填充材料建造的陡坡路堤。为了延长使用寿命，并在铁路基础设施需求不断增长的情况下确保公众安全，了解地质和岩土工程风险至关重要。在控制期5框架中，与合作伙伴Network Rail，Volker Fitzpatrick和Atkins共同采用了控制风险和优化缓解措施的方法。由于预算限制，早期无法在框架中采用较硬的工程修复方法，例如板桩墙。路堤更新项目采用了设计阶段更短，具有可持续收益的解决方案，采用了更具阶段性的方法。详细的讯问 通过分阶段进行站点调查和分区，可以将高风险区域作为目标区域，并干预该区域内更多站点，从而达到Network Rail资产政策目标。边坡运动监测与更详细的方法相结合，是评估不稳定原因，有效缓解设计以及评估施工期间和施工后性能的有机组成部分。对低风险未处理区域的持续监控和未来的工作策略计划，可以对资产进行更好的控制和主动管理。在施工期间和施工后进行有效的缓解设计并评估性能。对低风险未处理区域的持续监控和未来的工作策略计划，可以对资产进行更好的控制和主动管理。在施工期间和施工后进行有效的缓解设计并评估性能。对低风险未处理区域的持续监控和未来的工作策略计划，可以对资产进行更好的控制和主动管理。