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随着我国西部大开发步伐的推进,越来越多的铁路、公路等交通工程设施在西部地区兴建,并逐步投入使用。但在西部地区进行工程建设难度也很大,由于西部特殊的地理位置和自然气候条件,造就了诸如多年冻土、盐渍土等不同于一般土体的特殊土体,给铁路、公路等工程构筑物的建设和安全使用带来了一定的困难和不便。本文以青海省锡铁山至北霍布逊线地方铁路为依托,开展细砂类盐渍土的地基处理研究,该工程铁路通过地段岩盐层最厚达17.7m。其成分以氯化钠为主。地基处理主要任务是最大限度降低高含盐区内地下水(卤水)对工程的腐蚀,尽量保证工程的安全性。
With the advancement of the great western development in our country, more and more transportation engineering facilities such as railways and highways are being built in the western region and gradually put into use. However, it is also very difficult to carry out project construction in the western region. Due to the special geographic location and natural climatic conditions in the west, special soil bodies such as permafrost and saline soil, which are different from ordinary soils, have been created for projects such as railways and highways The construction and safe use of structures have brought some difficulties and inconveniences. Based on the local railways from Xitiaoshan to North Hobushon in Qinghai Province, the paper deals with the foundation treatment of fine sandy soils with a maximum thickness of 17.7m. The main ingredients of sodium chloride. The main task of foundation treatment is to minimize the corrosion of groundwater (brine) in the high salinity area and to ensure the safety of the project as much as possible.