THE CONSTRUCTION METHOD OF BASEMENT DRAINAGE HAVING DOUBLE DRAINAGE CANALS AND THE SYSTEM

摘要

A method and system for constructing a basement drainage having double drainage canals is provided to dispose drainage members on an excavation finishing plane at various heights and layers. A method for constructing a basement drainage having double drainage canals comprises a first process of horizontally leveling an excavation finishing plane(20), a second process of installing a first drainage member(3) so as to allow underground water collected on the excavation finishing plane to flow, a third process of excavating a trench(500) having predetermined depth and width before and after the first drainage member is installed, a fourth process of installing a second drainage member(300) in the trench, and a fifth process of pouring mortar on the excavation finishing plane on which the first drainage member is installed to form a lean concrete layer(100).