Stratum situation
Location (province): Henan Province
Location (city): Jiaozuo
Drg model: MXL-150D2 anchor rig
Drill tool configuration: 76 drill pipe
Process type: grouting lead hole
Construction technology: lead hole
Stratigraphic situation: backfill the gravel layer
Construction Angle (°): 15
Pore size (mm): 130
Hole depth (m): 12
Construction efficiency (min): 45
Pure drilling time (min): 30
Construction technology
One MXL-150D2 drill, one 13 cubic air compressor, and one 130 submersible hole hammer
1、The rig moves the machine to the hole position, adjusts the Angle, and supports the legs on the ground (the track and legs land together as far as possible).
2、Install 76 drill pipe and 130 submersible hole hammer.
3、The submersible hole hammer head aims at the hole position, use the holder to position the impactor, open the air valve, give the inlet action into a uniform speed, slow rotation, should pay attention to the verticality and slag discharge in the drilling process.
4、To the required depth, clear the hole, start to remove the drill pipe.
5、Remove the drill and put the made steel pipe of 45 into the hole.