沙漠公路盐渍化软弱地基处理技术研究

摘要

以通古勒格淖尔至额尔克哈什哈公路(蒙甘界) 为依托工程,通过现场挖探、取样试验确定盐渍土的物理、力学性质和工程水文地质情况.建立现场试验路,采用经济合理的盐渍化软弱地基风积沙和砂砾换填处治方案,研究在不同换填材料、换填深度等条件下地基处治效果.通过试验段施工期与运营期沉降监测对换填效果进行验证和评价,提出适合内蒙古腾格里沙漠公路特殊路基处治技术.%Based on Tonggulege Nur to Elk Hashha (the intersection of Inner Mongolia and Gansu) highway construction, the physical, mechanical properties and engineering hydrogeology of saline soil is determined through site excavation and sampling test. Through field test road, it took economical and feasible aeolian sand and gravel replacing and filling treatment program for salinized soft foundation to study the foundation treatment effect under different conditions of replacing and filling materials and depth. The replacing and filling effect is tested and evaluated by settlement monitoring during the period of construction and operation and the treatment technology suitable for the special subgrade of Tengger desert highway in Inner Mongolia is put forward.