Soundproof door for rubble filling up type tunnel pithead

摘要

Topic Panel structure becomes simple, becomes cost decrease panel itself and such as transport. In addition, because the glass wool is not used completely, it is connected to protection of the environment.SolutionsIt produces with various steels which respond the panel which had necessary thickness, necessary try to be able to fill up the rubble inside that panel. It transports to installation actual place by the usual 10t car, and the like at installation actual place fills up the rubble inside the panel. This time, at the work place it prepares the quantity of the necessary rubble. It lifts the panel which fills up the rubble with the rough tar, and the like keeps assembling in specified place such as pithead. Selective figure Figure 1