| 摘要 |
PROBLEM TO BE SOLVED: To provide a soil passage forming method without causing ground subsidence even at a place where spring water springs out, short in a construction period and hard to be influenced by weather. SOLUTION: This soil passage forming construction method constitutes a characteristic feature of sequentially carrying out a first water stopping process to form a water stopping region 5 by injecting a consolidating medium from a head end by inserting an injection pipe 4 of the consolidating medium in soil, a first propelling process to propel both of buried pipes 7, 8 in front of a point to cross with the other buried pipe by propelling the buried pipes 7, 8 in the water stopping region 5 vertically and laterally and a first opening process to form a communicating hole 10 by discharging soil in the extending direction of the both buried pipes 7, 8.
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