| 摘要 |
The dismantling method comprises steps 1-8. Step 1: a plurality of cutting sections are set in the direction parallel with the drawing direction on a horizontal cutting plane set in the foundation concrete at the bottom of a blast furnace. Step 2: a horizontal hole is bored in parallel with the drawing direction in the foundation concrete on the boundary of the cutting sections. Step 3: the foundation concrete in the cutting section is cut along the upper and lower horizontal planes by inserting a wire into adjoining horizontal holes. Step 4: an air gap portion is formed by discharging the foundation concrete between the upper and lower horizontal cutting planes. Step 5: a lateral movement member for carrying out the furnace bottom section is arranged in the air gap portion. Step 6: a furnace body load supporting member is provided in the gap between the upper surface of the lateral movement member and the upper horizontal cutting plane. Step 7: a lateral movement means equipped with the lateral movement member and the furnace body load supporting member is arranged over the entire region of a horizontal cutting portion by repeating the steps 2-6 or steps 3-6. Step 8: an upper mantel is separated from the furnace bottom, hoisted and carried out by imparting a horizontal force. |
