发明名称 Method for removal of broken ground
摘要 In order to avoid the time-consuming transport by road or rail vehicles, in many cases, overburden is pumped to the outside of a tunnel under construction, where it is dumped onto dump-hills. In order to avoid such dump-hills as well as extended transport distances, according to the invention it is disclosed that the overburden is transported, dumped or stored, via channels drilled into the wall of the tunnel, inside of the mountain surrounding the tunnel, and also to transport the overburden, in case of a tunnel to be constructed under a waterway, by means of a pipe into the waterway or to the surface of the waterway.
申请公布号 US4900191(A) 申请公布日期 1990.02.13
申请号 US19870138560 申请日期 1987.12.24
申请人 SCHLECHT, KARL 发明人 SCHLECHT, KARL
分类号 E21D9/12;E02D29/045;E21D9/13 主分类号 E21D9/12
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