谈锤击夯扩(内外管)成孔施工工艺

摘要

This paper introduced the application scope and construction process of hammer tamping and pore-forming process, from the measure-ment unreeling, expanding head construction, outer pipe pulling and other aspects, elaborated the technical key points in construction, pointed out that the hammer tamping and pore-forming process construction, could obtain good economic and social benefits.%介绍了锤击夯扩成孔工艺的适用范围及施工流程,从测量放线、扩大头施工、外管起拔等方面,阐述了施工中的技术要点,指出采用锤击夯扩成孔工艺施工,可获得良好的经济和社会效益.