【Construction case】MXL-150D anchoring drilling rig

Stratum situation

Location (province): Hubei province

Location (city): Enshi

Drill model: MXL-150D type multi-function anchor drilling rig

Drill tool configuration: 73 drill pipe

Process type: rotary spray water stop

Construction technology: double rotary spray

Stratigraphy: 1-5 m soil layer, 6-10 m sand egg layer

Construction Angle (°): 90

Pile diameter (mm): 600

Pile depth (m): 10

Construction technology

MXL-150D anchor drilling rig, configuration: XPB-90 high pressure pump, 6 cubic air compressor, cement slurry mixing tank, a gas storage tank

1、The construction site shall be arranged and leveled, and the pile positions shall be marked with wooden sticks according to the drawings.

2、After the drill is in place, adjust the verticality of the drill propulsion frame with a horizontal ruler. If there is any high and low, adjust with legs.

3、Connect a drill pipe and drill bit, open the air compressor and high pressure pump for pressure test.

4、After the pressure test is completed, the drill pipe of good points will be drilled in turn, quickly drill to the required depth, and then carry out rotary spray operation. Lift speed 20cm / min speed 15r / min cement slurry pressure 25MPa air pressure 0.7 MPa

5、Pay attention to the backgrouting situation. Remove the drill pipe and clean the drill pipe to prevent the cement slurry in the drill pipe hole from solidification and blocking the drill pipe.

6、Lift to two meters from the ground to stop spraying, pull out the drill pipe, move the machine to the next pile construction.

7、Before the noon rest, the evening to use water to clean the high pressure pump, drill pipe, high pressure pipe to prevent the stop time is too long, resulting in cement slurry blockage pipe and drill pipe.

—— Anman drilling rig after-sales service: Wang Bing