KLL BORED-JACK SYSTEM (ZYJ860K)MALAYSIA PATENT APPLICATION No:PI 2013702523

Conventional Pre-boring system

BORING MACHINE + NORMAL JACK IN MACHINE

BORED-JACK MACHINE

BORED-JACK MACHINE-APPLICABLE TO SPUN PILE

BORED-JACK MACHINE

INJECTION+ DRILING PILING TECHNOLOGY FOR SPUN PILE INSTALLATION

REPLACE BY BORED JACK SYSTEM

DISAVANTAGES OF PRE-BORED SYSTEM Slow productivity. High Risk for Pile ECC problem. Bored-Hole may collapse -Double Handling of

Work. Involve 2 different type of machinery-Cost Issue Not environmental friendly construction method

– The underneath soil and sand which is not necessary also need to be extracted from the ground.

Muddy construction site and the unnecessary earth need to be dump away from site.

ADVANTAGES OF BORED JACK SYSTEM

Site will be more tidy & clean. No collapse Bored Hole Issue . Low Risk of Pile ECC problem. Environmental friendly Method. Faster Construction Method as the boring

system only active when necessary. Cost Saving System.

Upper truss

Crowed cylinder

Adjusting cylinder

Lower truss

Main machine

Crane

Feeding Motor gear

Rotary head

DrillingRod andauger

Operation cabin

ITEM date

Drilling diameter Range ≤ Φ380mm

Drilling speed

Drilling head rotary speed 20—25r/min

Max drilling speed 3.5m/min

Drilling depth Max 45m

Feed motor gear Max torque 12000N.m

Rotary Drilling head Max torque 40000N.m

• Main Parameters

ITEM DATE

One set Main Jack in cylinder

Jack in force ( pressure 25Mpa) 307.5 tf

Max jack in speed (pressure ＜14 MPa) 7.0 m/min

Min jack in speed (pressure over 25 MPa) 2.2 m/min

One set main jack in cylinders& one setauxiliary cylinder

Jack in force ( pressure 25Mpa) 615 tf

Max jack in speed (pressure ＜14 MPa) 2.2m/min

Min jack in speed (pressure over 25 MPa) 1.3m/min

One set main jack in cylinders& Two sets

auxiliary cylinder

Jack in force ( pressure 25Mpa) 860 tf

Max jack in speed (pressure ＜14 MPa) 1.2m/min

Min jack in speed (pressure over 25 MPa) 0.8m/min

Jack in process

1- Machine in position, upper truss backward

2- Lifting the first 12m spun pile

3.Jack in the first 12m spun pile until the pile not able to penetrate through the sand compacted sand layer.

4. Lift the 12m long auger

5- 12m long auger put into

the hole of first spun pile

6- Lifting the second 12m long auger and

the second spun pile together in position

7- Connect the second 12m long auger

with the first 12m long auger, the clamping

the pile and jack in the second pile. Connecting

the first and second pile at the available

position by welding

8- Lifting the third 12m long pile and

auger together.

9- Jack in the third pile, same

operation as step 7.

10- Connection 4m long drilling rod and 9 m

Long auger, then put into the fourth 12m pile.

11- Jack in the fourth pile ,same operation

As step 7, when the first pile reach the

density sand can not get through, move the

Upper truss, connect the rotary head and

the drilling rod, then start drilling the sand.

12- Drilling and jack in operation alternately.

Finally the pile reach the design request depth.

13- Anti-clockwise rotary the rotary head,

And use the crane lift the augers.