Drain belt / Drain pipe “Civil Works Application ”

TABLE OF CONTENTS

Drain Belt

1

Introduction

- Outstanding drainage method with soft PVC micro channel inlets that absorb/drain water.

- Semi-permanent soil drainage system utilizing capillarity, surface tension, permeability and siphon.

• a：Capillarity absorbs water into the Drain belt.

• b：Surface tension locks absorbed water inside the Drain belt.

• c：Gravity stop soil fines from the micro channel inlets facing down.

• d : Siphon (water flow by pressure difference) drains water out to

the Drain Pipe.

1. Introduction

1. Introduction

Clogging of drainage pipe, felt

Lower Safety by Soil Particle Discharge (Sink Hole, Slope Collapse)

Longer Construction Period (1month)

Lower Construct Ability

(required minimum slope S=0.5%)

Semi-permanent with no clogging

Higher Safety without Soil Particle Discharge

Possible intercepting the groundwater

Minimizing Construction Period (7days)

Higher Construct Ability

(Flexible and Slope-free)

Problems of Current Drainage System Improvement by Drain belt

Application of Innovative Drainage System

1. Introduction

▣ Stone Filled Drain (type-1)

Omitted Gravel(smashed rock), felt construction

Minimizing construction material and personnel expenses

Shorter Construction Period

Cost Reduction(24% ↑)

▣ Drain belt

Drain Belt

Perforated pipe

Silt

Sand

Drain belt

Geotextile

Silt

Gravel

24% Reduction

2

Sub drainage (Rock filled trench)

2. Sub drainage (rock filled trench)

Type Criteria Note

1 (use Geotextile)

L type gutters Silt

2 L type gutters Ripping, blasted rocks

3 (use Geotextile)

Cutting & banking border Extension of existing pavement, foundation base of soundproof walls

Silt

4 Cutting & banking border Ripping, blasted rocks

Geotextiles

Geotextiles

2. Sub drainage (rock filled trench)

Drain Belt

Socket Drain Pipe

Drain Pipe Socket

50Cm 50Cm

50Cm 50Cm

20Cm

20Cm

Drain Belt

2. Sub drainage (rock filled trench)

Project Name Haeundae arboretum

Busan, Korea

Site photos

3

Fill up section’s drainage

3. Fill up section’s drainage

Site Photos

Project Name Embankment in Hoein IC

Dangjin~Yeongdeok

4

Cut section’s drainage

4. Cut section’s drainage

Site Photos

Project Name Local road cut slope

Fukuoka, Japan

Detailed drawing

5

Drainage for backfill of a retaining wall (structure)

5. Drainage for backfill of a retaining wall (structure)

Site photos

Project Name Retaining wall on roads

Gongju-city, Chungcheongnam-do

Backfilled area

6

Sidewalk & pavement foundation drainage

6. Sidewalk & pavement foundation drainage

Construction procedures

Project Name Full Infrastructure Project Moon-jung District, Seoul