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METHOD AND APPARATUS FOR PROMOTING AGGREGATE PILLS BY USING AIR HAZARD WITH OPEN POWER LIMITS
METHOD AND APPARATUS FOR PROMOTING AGGREGATE PILLS BY USING AIR HAZARD WITH OPEN POWER LIMITS
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机译:通过使用开放功率限制的空气危险来促进聚集丸剂的方法和装置
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摘要
A system and method for installing aggregate piers is provided. A cylindrical hollow mandrel is driven to a desired depth. Aggregate is fed through the mandrel in steps. The mandrel is raised and driven to tamp the aggregate. Physical members in a tamping head of the mandrel allow aggregate to remain in a cavity formed by the mandrel, and prevent aggregate from entering the mandrel during driving.
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