| 摘要 |
PURPOSE:To make it sufficiently withstand deformation of surface on the ore mine, heavy snow, long rain, etc. in such a way that cement aqueous solution is sprayed and coated on the ore mine, and after having being left as it is for more than the specified hours, then resin aqueous solution is sprayed on the cement film. CONSTITUTION:Approximately 10-30wt% of cement aqueous solution is sprayed and coated in thickness of approximately 0.4-2.0mm. on the ore mine, and after having being left as it is for more than five hours, then approximately 5-50wt% of resin aqueous solution is sprayed in thickness of approximately 0.6-2.4mm. on the cement film. Such as this, what has been done two-laminated coating of cement aqueous solution and resin aqueous solution sufficiently withstand deformation of surface on the ore mine, heavy snow, long rain, etc., and because shielding from air can be secured for a long time, dusting can be prevented, and also efflux from the base of the mountain and change of moisture can be prevented. |
