WATER TIGHT BOLT FOR TUNNEL SEGMENT ASSEMBLING FOR REDUCING TUNNEL CONSTRUCTION COASTS BY SIMPLIFYING TUNNEL CONSTRUCTION

摘要

PURPOSE: A water tight bolt for tunnel segment assembling is provided to prevent water leakage in a bolt and reduce tunnel construction costs by simplifying the tunnel construction. CONSTITUTION: A shield tunnel method constructs lining of a tunnel by assembling a segment(5) manufactured in a factory together with digging. A water tight bolt is developed in order to improve a slant bolt method leaking water through a bolt hole. A head part(4) of a bolt is changed in such a manner that the head part(4) has a washer type structure. A rubber packing(2) is inserted into the head part(4) by enlarging a size of the head part(4). The bolt is tightened, so that a bolt hole is sealed.