A WATER DETENTION SYSTEM INCORPORATING A COMPOSITE DRAINAGE MEMBRANE专利检索- 道路基层即地基或路基例如路堤或铁路道碴层或排水道路铺面或道碴层排水的沟槽涵洞管道排水或其他特别专用措施专利检索查询-专利查询网

A WATER DETENTION SYSTEM INCORPORATING A COMPOSITE DRAINAGE MEMBRANE
申请号	PCT/GB2006000474	申请日	2006-02-09	公开(公告)号	WO2006085095A3	公开(公告)日	2006-12-28
申请人	FORMPAVE HOLDINGS LTD; HART PETER;			发明人	HART PETER;
摘要	A water detention system comprises a sub-base of crushed rock or stone (21) overlying an impermeable layer (29) which may be naturally-occurring, as in an impermeable sub-grade, or may be formed by an impermeable membrane (26) laid over the sub-grade prior to the sub-base layer. Over the sub-base layer is an incompletely impermeable layer (22) the impermeability of which is compromised by openings in the form of slits (12) or by spacing between adjacent strips forming the layer. These openings allow water to percolate downwardly through the layer (22) into the sub-base, but substantially inhibit the escape of moisture by evaporation thereby serving to retain the collected water. Above the incompletely impermeable layer (22) may be a laying course (20) of finer particulate material such as pea gravel over which may be laid a wear surface (18) of slabs or blocks (19) to form an area for traffic, such as a roadway or parking area.
权利要求
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