| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stack dismantlement method for easily, safely and economically dismantling a multi-cylinder centralized stack. <P>SOLUTION: By installing a jack 5 on the soil at the center part of a three-cylinder type centralized stack 1 and repeatedly hoisting and connecting a mast block 3A by the jack 5, a mast 3 is vertically constructed at the center part of the centralized stack 1. The centralized stack 1 is cut off at a part below a fixed part with the mast 3, a cut-off stack part is cut into stack pieces at a cut-off position, and the cut stack pieces are successively dropped into the centralized stack 1 not cut off yet and removed from an opening (O) formed at the base part of the centralized stack 1. When the dismantlement of an upper stack part is completed, cut-off of the centralized stack 1 at the part below the fixed part with a peak part of the mast 3, cutting of stack pieces while successively lowering the stack part by the jack 5 at the cut-off position and dropping of the stack pieces into the centralized stack 1 not cut off yet are repeated similarly at the remaining centralized stack 1 not cut off yet as well. <P>COPYRIGHT: (C)2012,JPO&INPIT |
