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ADDITIVE FOR SLURRY SHIELD CONSTRUCTION METHOD AND SLURRY SHIELD CONSTRUCTION METHOD USING THE SAME
ADDITIVE FOR SLURRY SHIELD CONSTRUCTION METHOD AND SLURRY SHIELD CONSTRUCTION METHOD USING THE SAME
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机译:泥浆盾构施工法的添加剂和泥浆盾构施工的相同方法
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摘要
PROBLEM TO BE SOLVED: To provide an additive for slurry shield construction method which, even when a drilling fluid contg. a small amount of the additive is mixed into an excavated soil, is capable of discharging and transporting the soil as a flowable slurry without using a large amt. of fine soil particles and to provide a shield construction method wherein an excavated soil can be easily discharged and transported as a slurry by using the additive. ;SOLUTION: This additive A mainly comprises an aq. soln. of a water-sol. anionic (co)polymer obtd. by the reversed-phase emulsion polymn. of a water-sol. vinyl monomer component contg. 30-100mol% monomer having a sulfone group. The additive A is used by adding it to a drilling soln. for tunnel surplus soil in a shield construction method.;COPYRIGHT: (C)1997,JPO
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