Trinner Method （Triple layer water cutoff wall method）

Vertical water cutoff wall technology preventing contaminants leaching into soil or groundwater

The Trinner method is a vertical water-cutoff wall technology that prevents contaminants from leaching into surrounding soil and groundwater by using blocking and seepage control work to enclose the contaminated soil.

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  • Soil/slope retaining
  • Water cutoff
  • Containment
  • Water Cutoff
  • Low vibration, low noise
  • Space and height restrictions
  • Low displacement implementation

The Trinner method combines two techniques that have been well used: the diaphragm wall water-cutoff method (soil cement wall) and the sheet-type water-cutoff method. Using the merits of each makes for a highly reliable water-cutoff wall method.

Implementation method

Procedure

  1. Chainsaw-type cutter digs down to low permeable layer.
  2. It is moved laterally, and cement slurry is poured in and mixed with the site soil to form a continuous wall.
  3. Before the wall hardens sheeting is inserted using a guide frame.
  4. The sheeting is left in place as the guide frame is withdrawn.

Related material

Pamphlet