| 摘要 |
PURPOSE: An open type prefabricated perforation casing and a column-type earth retaining grouting method with the same are provided to prevent soil or underground water from leaching, and to offer a connected steel pipe. CONSTITUTION: An open type prefabricated perforation casing(100) comprises a body, an upper fixture(111), a lower fixture(112). The body comprises two frame portions(121,122) and two openings(131,132). The upper fixture is connected to the upper outer circumference of the body. The lower fixture is connected to the lower outer circumference of the body. |
