Tianjin MXL-150D6 Spray Reinforcement

Location: Tianjin

Drill Model: Anman MXL-150D6

Drilling Configuration: 89 double drill rods

Construction Method: Single-layer spray reinforcement

Geological Conditions: Soil layer

Drilling Angle (°): 90

Drill Bit Diameter (mm): 500

Drill Depth (m): 18

Construction Method:

1. Level the site to ensure a stable and reliable working surface for the drill. Determine the location of each pile according to requirements.

2. Start the drill at the designated point, adjust the drill rod verticality, align the drill bit with the center of the pile, and secure the stabilizing legs.

3. Turn on the high-pressure pump to 8-10 MPa, start the first rotation, and feed the drill rod at a uniform speed.

4. Advance the power head to the desired depth, release the locking mechanism, lift the power head to the stroke length, lock the pile in place again, and continue drilling to the required depth.

5. Adjust the high-pressure pump pressure to 28 MPa, turn the speed to 18 r/min, and raise at a rate of 20 cm/min to begin spraying, stopping about 1.5 meters from the ground surface.

6. Move to the next borehole location.