Casings plastic in order to fill the empty spaces between the rock and the soutenement in the operation of the mines and construction of the tunnels to use of such casings plastics material.

摘要

P a.boyaux plastics - and advantages of using - in order to fill the empty spaces between the rock and roof supports. / p & & p & b.ces plastic casings are characterize in that they comprise strips of sheet of polyethylene, high pressure with the addition of hydrocarbons halogen anhydride antimonious, constituted of certain enzymes should be particularly to breaks. The method consists in particular to form between the rock and soutenement a sheath parallel to the strips of sheet and to be filled with materials of construction, the space separating this sheath of the rock. / p & & p & c.l' invention applies mainly for use in mines, and to the construction of the tunnels. / p