松软土层中灌注基桩用短螺旋钻头的设计

A New Design of Short Spiral Bit for the Use of Grouting Foundation Piles in Soft Soil Beds

根据城建工程深基础灌注基桩的需要,设计并试用了短螺旋钻头,提高了施工效益和质量。

To meet the needs of deep foundation pile grouting in urban construction,a new designed short spi-ral bit has been developed.It has been also demonstrated that,through a series of trial tests,such bitswill bring about high economic benefit and good drilling quality in practical operations.