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公开(公告)号:US3707847A
公开(公告)日:1973-01-02
申请号:US3707847D
申请日:1968-02-06
Applicant: RAYMOND INT INC
CPC classification number: E02D3/106
Abstract: Formation of sand drains in the earth by drilling and forcing a fluid at high velocity to wash out a hole and thereafter filling the hole by forcing filler material down through a pipe; the pipe being outfitted with special valve control means to control the flow of fluid and filler therethrough in generally inverse manner.
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公开(公告)号:US3772894A
公开(公告)日:1973-11-20
申请号:US3772894D
申请日:1971-12-08
Applicant: RAYMOND INT INC
CPC classification number: E02D3/106
Abstract: Formation of sand drains in the earth by drilling and forcing a fluid at high velocity to wash out a hole and thereafter filling the hole by forcing filler material down through a pipe; the pipe being outfitted with special valve control means to control the flow of fluid and filler therethrough in generally inverse manner.
Abstract translation: 通过高速钻孔和强制流体冲洗一个孔,然后通过管道将填料向下挤压来填充孔,从而形成泥土排水沟; 该管配备有特殊的阀控制装置,以大致相反的方式控制流体和填料的流动。
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