Patent ID: 7775455
Filing Date: 2010-08-17
Classification: E01B

Abstract:
1. A railway rail supporting pad to be interposed between a rail bearing member and a rail, which fills a gap between the rail bearing member and the rail with the rail being placed at a height adjusted disposition and compounds of two types of reaction solutions cured in an outer bag, the railway rail supporting pad comprising: the outer bag made of a synthetic resin sheet, the outer bag containing one of a first reaction solution as a base material and a second reaction solution as a curing agent; an inner bag made of a synthetic resin sheet so that at least a part thereof opens due to external pressure, the inner bag being provided inside the outer bag and containing one of the second reaction solution as the curing agent and the first reaction solution as the base material; a sub bag that is separable from the outer bag in a communicative manner; a first sealed portion provided at a communication part between the outer bag and the sub bag; and a second sealed portion partitioning the sub bag into a plurality of partitioning spaces, wherein the external pressure is applied to the outer bag from outside, the inner bag is opened by the external pressure from outside, the first and second reaction solutions are mixed in the outer bag, and redundant compounds of the reaction solutions flow into the sub bag while opening the first sealing portion, further redundant compounds cause the second seal portion to open step-by-step and flow into the partitioning spaces step-by-step, and the thickness of the curing agent of the reaction solutions remaining in the outer bag is adjusted with a plurality of steps, wherein after the reaction solutions flow into the sub bag, and the partitioning spaces in the sub bag adjacent to the outer bag are filled with the reaction solutions, in a case that the redundant compounds flow even more, the redundant compounds open the second sealed portion step-by-step and flow into the partitioning spaces step-by-step, thereafter, the communication part between the outer bag and the sub bag is closed from outside, after confirming completion of curing of the compounds of the reaction solutions, the communication part between the outer bag and the sub bag is cut away.