A series of changes mechanical properties such as fracture development, relaxation, collapse deformation, and strength decreasing the surrounding rock loess tunnels occur due to shearing immersing, will be prone engineering failures, including large fissure, ground collapse, landslide, lining cracking, seriously threatening construction operation safety tunnels. These problems are especially pr...

Thermobonding is widely used in producing of nonwovens. In this study various layers of thermobonded nonwovens were produced by altering the pressure, binder fibres and quality of blending. Mechanical properties of the so-called layers such as breaking strength and breaking elongation, bending rigidity and air permeability were assessed consequently. The structure of the layers was then studied...