UNIT ON A FORM OF NET USED AS QUAYS TO PROVIDE PROTECTION SHORES,RIVERS SIDE,AND BREAK WATER ALLOWS WATER FLOW THROUGH SOME PARTS THERE IN

摘要

Protective covering mat for shores, embankments, dykes etc. is at least locally penetratable by water, and consists of at least three flexible layers that can be transported as a unit, esp. in the form of a roll. The central filtering, reinforcing layer consists of a flexible material, that is resistant to tearing, ageing, water and sea-water e.g. a plastics material and the upper and lower layers consists of tyres or similar scrap rubber or plastics material, that is cut into the necessary size, and/or natural stones and/or slags, and opt. filters. The upper/lower layers also contain a binder that bonds together the single pieces of these layers, and also bonds these layers to the central layer. The mat is easily and cheaply produced, transported and placed in position. Filtering power and water penetratability can be controlled. It has good durability.