Why should auger drilling be done by means of jump excavation?
The development of the construction program according to the building site engineering geological data and hydrological data and the pile foundation engineering construction drawings, design drawings, and other relevant information.
According to the construction of regional geological conditions and construction requirements, the general pile drilling pile construction in the jump, has been filling into a pile of adjacent pile drilling bit, is to wait until the strength of concrete bored pile has reached more than 2.5MPa before drilling, to avoid the disturbance of bored pile adjacent construction.
It is too tight, easy to punch through two holes, and after the hole into the cage, and filling, next to hit, you can not fill.. Hope to adopt
