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湿陷性黄土地基是基础工程中最为复杂的地基类型之一,采取可靠的工程措施以确保基础工程的安全稳定,是湿陷性黄土地区客运专线建设必须解决的技术难题。通过分析湿陷性黄土的主要工程特性,提出湿陷性黄土地区铁路工程的地基湿陷性、边坡稳定性、填料改良、黄土隧道变形、桩基负摩擦力等主要技术问题。在借鉴国内外已有的成熟经验和研究成果的基础上,湿陷性黄土地区铁路工程采取合理选择线路位置、科学确定工点方案、采取可靠的地基处理等措施,为铁路客运专线建设提供可靠的技术支撑。
Collapsible loess foundation is one of the most complex foundation types in foundation engineering. To take reliable engineering measures to ensure the safety and stability of foundation works is a technical problem that must be solved in the construction of passenger dedicated line in collapsible loess area. By analyzing the main engineering characteristics of collapsible loess, the main technical problems of foundation collapsible, slope stability, filler improvement, loess tunnel deformation and negative friction of pile foundation are proposed. Based on the existing mature experience and research results both at home and abroad, the railway project in collapsible loess area takes reasonable route selection, scientifically determines the worksite plan and adopts reliable foundation treatment to provide reliable and reliable railway passenger dedicated line Technical support.