Construction of underground dams and equipment the

专利名称：Construction of underground dams and

equipment therefor

发明人：Grisha H. Paverman申请号：US05/565682申请日：19750407公开号：US03973408A公开日：19760810

摘要：A method and equipment for constructing a fluid-impervious underground wallby vertically sinking an elongated web member into the ground where the wall is to becreated, the sinking being performed with the aid of vertical vibration of the web memberat a frequency that loosens the structure of the soil. The web member thereafter isvertically withdrawn while being vibrated vertically at the same or a higher frequency. Asthe web member is being sunk, liquid grout is introduced under pressure beneath thedownwardly moving lower edge of the web member, such grout being forced into thesurrounding soil structure by the tamping effect of said vibrating lower edge. Thereafter,as the web member is withdrawn, more liquid grout is introduced under pressurebeneath the now upwardly moving lower edge of the web member so as to fill the spaceformed by such withdrawal with the grout which is further tamped by the vibrating loweredge to aid in soil penetration, all the grout subsequently setting to form a thick fluid-impervious underground wall segment. The liquid grout penetrates to a substantialextent the soil structure transversely of the plane of the space formed by sinking andwithdrawal of the web member so as to form a wall segment which is considerablythicker than the thickness of the web member. The operation is repeated in an

overlapping relationship to the previously emplaced grout before the previouslyemplaced grout has set, until the entire length of the zone to be occupied by the wallhas been covered. This invention is an improvement over the method disclosed in U.S. Pat.No. 3, 245,222 issued Apr. 12, 1966.

申请人：PAVERMAN; GRISHA H.

代理机构：Kirschstein, Kirschstein, Ottinger & Frank

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