航道疏浚土路基填料化处理应用研究

Research on the Improvement of Waterway Dredged Soil as Subgrade Filling

航道建设过程中产生大量的废弃疏浚土,这些废弃土方量大占用大量的土地资源用于堆放,对生态环境造成了影响。虽长期堆载也可降低其含水率,但是由于其高有机质、高压缩性等特性,始终无法直接作为工程用土使用。针对航道疏浚土的特性,对其固化施工工艺进行了阐述,采用ALLU强力搅拌头固化工艺的特点,与传统的挖掘机、路拌机进行对比,并对改良后疏浚土的特性进行研究以及作为路床填料的最终填筑效果进行检测,检测数据表明,废弃疏浚土改良后作为工程用土满足规范及设计要求。

A large amounts of waste dredged soil were produced in waterway construction and occupied a lot of land resources,which made the ecological environment be influenced. Its high organic matter,high compressibility and other characteristics make it not be used as engineering soil directly,although the water content can be reduced by long heap. In this paper,the construction process was described based on the characteristics of the dredged soil and compared with the traditional excavator and road mixing machine by using ALLU machine. Besides,the properties of the improved soil were studied. The test show that the improved waster dredged soil used as engineering soil meet specifications and desigh requirements,after the filling effect was detected as roadbed filler.