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通过分析南昆铁路膨胀土或软土区路基基床下沉危害问题,分析总结了膨胀土和软土的基本特征,根据膨胀土和软土路基下沉产生机理与形成的原因,为保证膨胀土或软土路基在较长时间内的稳定,提出了激光实时测量下沉数据、改良下沉基床土性质、使用P.P.T高分子聚合材料、植被保护和疏通修建排水沟等一系列整治措施。
Based on the analysis of the subsidence hazards of the subgrade bed in the expansive soil or soft soil area of Nanning-Kunming Railway, the basic characteristics of expansive soils and soft soils are analyzed and summarized. According to the reasons and causes of the subsidence of expansive soils and soft soils, Or soft soil subgrade in a long period of time, proposed laser real-time measurement of subsidence data, improved subsidence bed soil properties, the use of PPT polymer materials, vegetation protection and dredging to build drainage ditch and a series of remediation measures.