发明名称 Protective element for protecting sealed tracks in trash-dump construction and method for sealing trash-dump bottoms
摘要 An object of the invention is rapid fabrication of sealed tracks for trash-dump construction to assure reliable protection even on slopes The invention proposes a protective element (1,15,21,33) in the shape of a shallow container with essentially constant height that receives a filling of sand (10,36)or a sand-like bulk material and which spans its space in such a way that a plurality of such can be laid as a gapless compound into a protective layer
申请公布号 US5215408(A) 申请公布日期 1993.06.01
申请号 US19910679905 申请日期 1991.04.03
申请人 GEBRUDER FRIEDRICH 发明人 ZIMMERMAN, JURGEN
分类号 E01C13/00;E02B3/12;E02D31/00 主分类号 E01C13/00
代理机构 代理人
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