The mine safety electrical equipment are designed so that the electrical area where there may be sparks is isolated from the ambient atmosphere by a fine mesh metal screen. The idea is that the metal screen will cool a burning gas off so the flame can’t pass through the mesh. The non-flammable air can pass through the mesh to cool the electrical equipment.
If water is electrolysed into oxygen and hydrogen gases, mixed together, the mixture becomes explosive because the mixture will burn very rapidly. If the mixture is on both sides of a strong, fine metal mesh, will the burning mixture be cooled off by the mesh and stop burning, but the pressure wave will still pass through the mesh? Or will the mesh allow the flame front to pass through? Is whether or not the flame passes through the mesh dependent on the depth of the holes in the mesh (i.e the thickness of the mesh material)? There may be other physical parameters that affect the blocking of the flame front. Size of holes? Spacing of holes? Shape of holes? Pressure? Temperature? Etc.
