초록 ▼

Procedure and means for making a vertical drain in the bottom of a water body, e.g. a sea or lake, from a raft on the surface of the water body. A conveying member, carried by the raft movably in vertical direction, is brought to be close to the bottom of the water body. A push tube, carried by the

Procedure and means for making a vertical drain in the bottom of a water body, e.g. a sea or lake, from a raft on the surface of the water body. A conveying member, carried by the raft movably in vertical direction, is brought to be close to the bottom of the water body. A push tube, carried by the conveying member movably in vertical direction, is pushed into the soil layer on the bottom of the water body to desired depth, whereby the push tube carries along the prefabricated drain, provided with an anchor on its lower end, located therewith in. Thereafter, the push tube is pulled up, the strip drain remaining in its place in the soil layer by the aid of the anchor. The aim of the invention is to reduce the consumption of prefabricated drain material, to reduce the time consumed in the operation and to reduce energy consumption. The invention teaches to pull the push tube up above the lower end of the conveying member. Another anchor is affixed to the prefabricated drain by the aid of an affixing means, located on the lower end of the conveying member.

대표청구항 ▼

Improvement in a procedure for making a vertical drain in the bottom of a water body such as a sea or lake from a raft on the surface of the water body, wherein a conveying member, carried on the raft movably in vertical direction, is brought to be close to the bottom of the water body, a push tube

Improvement in a procedure for making a vertical drain in the bottom of a water body such as a sea or lake from a raft on the surface of the water body, wherein a conveying member, carried on the raft movably in vertical direction, is brought to be close to the bottom of the water body, a push tube supported by the conveying member movably in vertical direction is pushed into the soil layer on the bottom of the water body to desired depth, whereby the push tube carries along a prefabricated drain, provided with an anchor at its lower end, whereafter the push tube is pulled up, while the prefabricated drain remains in its place in the soil layer with the aid of the anchor, wherein the improvement comprises that the push tube is pulled up to be above the lower end of the conveying member, that another anchor is affixed to the prefabricated drain by the aid of a fixing means located on the lower end of the conveying member.