Anhui Huaibei AM-6 Anti-Floating Anchor Bar

Location: Anhui Province

Location: Huaibei City

Drill Model: Anman AM-6 type anchor drill

Drilling Configuration: 180 screw drill rods

Construction Method: Anchor bar

Geological Conditions: Clay layer

Drilling Angle (°): 90

Drill Bit Diameter (mm): 180

Drill Depth (m): 9

Construction Efficiency (min): 15

Pure Drilling Time (min): 10

Construction Method:

1. Move the drill to the borehole location, adjust the angle, and secure the legs to the ground (try to get both tracks and legs in contact).

2. Install an 8-meter ordinary 76 drill rod, one 3-meter 76 (180) screw drill rod with three leaves, and a drill bit head. Recommend installing a cone guide sleeve for spiral drilling.

3. Begin drilling, lower the drill rod 50 cm, and then pump water (water pressure 3-5 MPa, with lubricating effect). Feed quickly while paying attention to pressure and mud condition (screw drilling principle relies on leaf plate mud removal; need to remove more mud and observe pressure conditions).

4. Drill to the required depth, pull out the drill rod (SJL-60 does not require disassembling the drill rod), and then:

5. Use a small winch to lower the anchor bar, and then move the drill to the next borehole location.

6. Fill the borehole with cement grout once, wait for the initial setting of the grout inside the borehole, and then perform a second filling.