LINER PLATES
LINER PLATES
Liner plates, which were developed as a tunnel lining material, are corrugated thin steel sheet with flanges attached on four sides. Because of their outstanding features, our liner plates are used widely in shafts (for deep foundation and jacking methods), catchment wells and other applications.
Lightweight and easy to handle
Made of thin steel sheets, liner plates are lightweight and easy to handle. Assembly is performed mainly by fastening bolts and can be carried out easily by anyone.
High strength and excellent durability
Liner plates have excellent cross-sectional properties because the steel sheets are corrugated for increased rigidity. In addition, hot-dip galvanization is applied on both faces to ensure a long service life.
Easy to transport and store
Because liner plates can be stacked during storage and transportation, they require very little space.
Can be assembled from the inside
Because the bolts can be fastened from the inside, liner plates can be installed close to the natural ground.
This minimizes overbreaks as well as the volume of soil, and leads to saving cost and time for construction.
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LINER PLATES - Liner plates for shafts
Liner plates for shafts (circular shape)
For deep foundation method
Circular-shaped liner plates are used for launching shafts
and arrival shafts with the jacking method, and with the
deep foundation method. In general, liner plates are used
alone for the ø1,500-2,500 range, and used in combination
with reinforcement rings for the ø3,000 and larger range.
Liner plates for shafts (oval shape)
For jacking method
Oval-shaped liner plates are used as launching shafts for jacking
sewage pipes and cable pipes. Plates generally are classified into support type and reinforced ring type.
Liner plates for shaft (rectangular shape)
Rectangular-shaped liner plates are used for launching shafts and arrival shafts with the jacking method and the shield method, and with the deep foundation method. The plate shape is effective when the space for shaft installation is limited.
LINER PLATES - Catchment Well
Catchment Well
A catchment well is a landslide control method designed to collect and discharge groundwater from water-bearing strata. A catchment well is effective when the water-bearing strata are relatively deep and concentrated within a certain range. In general, wells 3.5 meters in diameter are widely used because the boring work is usually carried out inside the well. To collect water from water-bearing strata, holes about 50mm in diameter are drilled in each section (two holes per section). Collected water is discharged by gravitational draining or is pumped out.
 Catchment well Water collecting condition |
 Catchment well Water collecting boring |