To enable highly accurate construction of a CB mortar solidified wall even at a site having a narrow facility yard for a bentonite stabilizing liquid plant.
In an excavation method using a bentonite stabilizing liquid: a used bentonite stabilizing liquid 35 in an excavation hole is recovered to a ground, and is mixed/stirred with a solidification material 42 and a bleeding inhibitor 44 to produce a CB mortar 45 on the ground; the CB mortar 45 is supplied to a CB mortar placing device 38 by using a pressure pump 46; and the mortar is sequentially placed in the excavation hole 32 from its bottom part while replacing the bentonite stabilizing liquid in the excavation hole 32 with the CB mortar 45. Simultaneously, a CB mortar solidified wall is constructed by stirring the placed CB mortar 45 by means of a stirrer 38a mounted to the CB mortar placing device 38, by which a construction method of the CB mortar solidified wall is provided as a basis.
JP2012057407A | 2012-03-22 | |||
JP2012057407A | 2012-03-22 |
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