种地铁隧道盾构始发施工工艺

本发明公开了种地铁隧道盾构始发施工工艺，包括始发端头地层加固工序、安装始发基座工序、盾构机组装工序、洞门凿除工序、安装反力架工序、安装洞门密封装置工序、安装负环管片工序、盾尾通过洞口密封后进行注浆回填工序、盾构掘进与管片安装工序。本发明的地铁隧道盾构始发施工工艺，施工时间短、效率高，操作方便，资金投入少，又能更好地保障施工安全与经济效益，满足政策施工需求。有极高的推广价值。 The invention discloses an originating construction technique for a subway tunnel shield. The technique comprises the following working procedures of originating end head stratum reinforcement; originating foundation bed installation, shield tunneling machine installation, chiseling away of a tunnel portal, reaction frame installation, tunnel portal sealing device installation, negative ring pipe piece installation, grouting and back-filling after shield tail sealing through the tunnel portal, shield excavation and pipe piece installation. The originating construction technique for the subway tunnel shield is short in construction time, high in efficiency, convenient to operate, few in fun investing, and capable of better guaranteed construction safety and economic benefits and meeting policy construction demands and has ex