Location (province): Guangxi Zhuang Autonomous Region
Location (city): Teng County
Drilling rig model: SJ-25A
Drill configuration: 60 double spin drill rod
Construction technology: double rotary spray construction
Stratigraphic situation: sediment of pile bottom of pile
Construction Angle(°): 90
Pore size (mm): 800
Hole depth (m): 20
Construction efficiency (min): 60
Pure drilling time (min): 3
Pure removal removal drill time (min): 5
Construction technology
1、Core exploration drilling rig to investigate the bottom situation of the pile body
2、The rotary spray drill shall put the rotary spray drill rod bit from the hole to the defect position for reciprocating high pressure water cleaning, and the lifting speed is 10~15cm / min rotation speed 10~20r / min high pressure pump pressure is 30MP until the clean water.
3、After cleaning, the cement slurry can be sprayed at the defective position. When the grouting concentration of the hole is consistent with the inlet concentration, the grouting can be stopped.
—— Anman Drilling Rig sales service: Wang Qilong