Construction Technology of Combined Hammer Dynamic Compaction Foundation Treatment of Gobi Fine Silt Soil Geology
The construction and installation project of mineral processing system engineering general contracting project of Qinghai Province Xiarihamu Nickel-Cobalt Mine is located in the western section of East Kunlun in Qinghai Province,at the southern edge of the Qaidam Basin,which is a branch of the East Kunlun Mountains,with the deep cutting terrain.The proposed site is the mountain beach,the geology is gobi fine silt soil,which is collapsible.According to the detailed geological prospecting data and the design and comparison of multiple schemes,the dynamic compaction method is the most appropriate to treat the geological foundation.The practice has proved that the dynamic compaction method is suitable for the treatment of gravel soil,sand soil,low-saturation silt and clay soil,collapsible loess,miscellaneous filling soil and plain filling soil.For high-saturation silt and clay soil and other foundations,when the compaction pit is backfilled with block stone,gravel or other coarse particle materials,dynamic compaction replacement is also applicable.In mineral processing project of Qinghai Xiarihamu Nickel-Cobalt Mine,the on-site test compaction and practice have proved its reliable applicability.