Improved method of existing Pack Drain method

1. Method overview

A type of PackDrain soft ground treatment method. It is a method of improving soft ground by simultaneously forming casing diameter 100M/M 6-axis in a triangular arrangement instead of the existing square arrangement and then injecting PACK net and sand. (Type interval can be changed)

2. Method characteristics

1) Array comparison.

2) The equilateral triangle drain type has a more homogeneous consolidation influence zone than the existing square drain type, thereby increasing the consolidation effect. 

3) Reduced smear zone due to reduced drain diameter. 

4) Easy penetration due to reduced drain diameter. 

5) Economical due to reduced type recovery. 

6) DRAIN's effective range 

For square array, D^e=1.128d, for regular triangle array, D^e=1.05d

3. Construction method and order