| 摘要 |
PROBLEM TO BE SOLVED: To provide a pumping well which can be installed in an underground construction site without hindrance and obviates labor and cost for removal or cutting-down, or the like of the well and further, which prevents deterioration of the water collecting performance of the underground water. SOLUTION: An excavation hole 2 is formed from the ground surface to the ground and a steel member assembly body 6 having a cylindrical part 7 is erected so that the cylindrical part 7 is vertically extended inside the excavation hole 2. A pumping pipe 8 is arranged inside the cylindrical body 7, and the intake of the pumping pipe 8 is disposed at the lower end 7a of the cylindrical part 7. Further, silica sand 23 is filled in a section extending from the nearby position of the intake of the pumping pipe 8 to the inner wall face 11B and soil cement Sc is filled in other zone except the section.
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