【Construction Case】MXL-150D2 High-lift Anchor Drilling Rig

Stratum situation

Location (province): Sichuan

Location (city): Chengdu

Drilling rig Model:  MXL-150D2 anchorage rig 

Drill tool configuration: 194 casing + 89 drill pipe

Process type: foundation pit anti-floating anchor rod

Construction technology: ordinary anchor cable

Stratigraphy: 1-3 m pebble layer, 3-10.5 m red sandstone

Construction Angle (°): 90

Pore size (mm): 220

Hole depth (m): 10.5

Construction efficiency (min): 35

Pure drilling time (min): 20

Pure removal removal drill time (min): 10

Construction technology

1、Move the machine to the hole point to adjust the Angle, support good legs.

2、Install the drill pipe to the power head, connect the 160A impactor to the drill pipe, install the concentric drill bit to the impactor, and then install the casing. From the footage to the hole site end, turn slowly to the initial footage positioning of the punching machine.

3、If the impactor does not impact, pull the inner drill pipe, if it is still not good, it is necessary to add diesel lubrication to try, in the impact will be removed to clean the impactor.

4、After hitting through the depth of the sand egg layer, there is no need to lower the casing, and then use the drill pipe to enter the red sandstone to the design depth.

5、After reaching the depth of the hole, pull out the drill pipe and then remove the anchor rod and remove the casing.

6、Finally, move the machine to the next hole position, leave the position, and then start the anchor rod grouting.     

—— Anman drilling rig sales service: Wang Bing