Application of Long Auger Rotary Jetting and Mixing Pile with Pneumatic DTH Hammer In the Waterproof Curtain of Beijing Subway Station

Abstract:

It is introdeuced that the long spiral rotary spray mixing piles were used on Beijing metro deep foundation pit engineering. When there were hard underground obstacles, the pneumatic DTH hammer was applied. It can drill the obstacles easily. The waterproof curtain piles were drilled smoothly,. The construction technique provides references for similar or related projects in the future.