PERFORATED HOSE CLAMP FOR TUNNEL DRAINAGE

摘要

PURPOSE: A perforated hose clamp for tunnel drainage is provided to fix a perforated pipe and a drain sheet firmly in a shotcrete layer by inserting the perforated pipe and the drain sheet in the joint portion of the clamp. CONSTITUTION: A perforated hose clamp for tunnel drainage comprises a joint portion(51) and a fixing portion(54). The joint portion has entry guide and separation prevention projections(52) on the interior surface of both ends in order to guide a perforated pipe and a waterproof member being inserted and to prevent the separation of the perforated pipe and the waterproof member. The fixing portion is extended from one of both ends of the joint portion to contact the exterior surface of a shotcrete layer and formed with a fixing hole(55) for securing the joint portion on the shotcrete layer.