深层搅拌法在加固含有腐殖酸的软土时失去了效用，需要添加促进剂来消除腐殖酸的影响。

Deep mixing method for soft soil is ineffective while humus content is above a certain value, thus additives should be mixed into cemented soil to eliminate the influence.

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深层搅拌法是以水泥作固化剂，通过专用的深层搅拌机械，在地基深部就地将土和水泥搅拌而成加固体；

The soil and cement are mixed into a solidified body in the deep level of the foundation by special purposed deep mixer with cement as the solidifying agent.

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工程实例表明，采取适当改进措施，深层搅拌法加固淤泥质酸性土可以达到预期的强度。

The engineering practice shows that the deep agitating method can be used to consolidate muddy-acid soil by taking improved meas...

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