旋挖钻机配套集束式潜孔锤硬岩施工方法研究

Study on Hard Rock Drilling Construction by Rotary Drilling Rig Matched with Cluster DTH Hammer

摘要:

针对旋挖钻机在大口径硬岩地层嵌岩桩施工困难的问题，采用旋挖钻机配套集束式潜孔锤的解决方案，设计了JSQ-Z正循环及JSQ-F反循环2种类型集束式潜孔锤，并提出了3种施工方法及钻具配套方案，使旋挖大口径硬岩施工更加快速、高效、经济。

Abstract:

According to the difficulties for rotary drilling rig in large diameter rock-socketed pile construction in hard rocks, cluster DTH hammer is matched as the solution. JSQ-Z positive circulation and JSQ-F reverse circulation cluster DTH hammers were designed, 3 kinds of construction methods and drilling tools matching scheme are presented, which makes large diameter rotary drilling in hard rocks more rapid, efficient and economical.