| 摘要 |
PURPOSE:To increase or reduce filter points of a textile formwork according to the conditions of the ground by a method in which pockets are formed at given intervals by sewing the upper and lower parts of a baggy cloth formwork in such a way as to enable water-permeable materials to be set. CONSTITUTION:The upper and lower parts 1 and 2 of a baggy cloth formwork B of a synthetic fiber (e.g., nylon, etc.) are sewed together in parallel for short sections by means of a sewing machine to form a proper number of pockets C. Also, according to the conditions of the ground, on which the formwork is to be set, the number of filter points is determined and a water-permeable material 7 (e.g., nonwoven clotch, felt, etc.) is stuffed into the pockets C. When cement mortar 4 is poured into an injection port 6, the pockets not filled with the water-permeable material 7 and the other parts are filled with the cement mortar 4, and the pockets filled with the water-permeable material 7 serve as filters. |
