在地铁列车运行紧急事故状态下为保证旅客安全,做到尽快疏散人员至安全地带,另外需要排除隧道积水,则在上、下行区间隧道设置联络通道或地下中间泵站十分必要。在对联络通道挖设位置以及其周围地层采用深层搅拌法或旋喷法进行预加固或局部补充加固后,再在隧道内进行开孔破土,沿通道掘进,浇筑衬砌。 上海地铁1号下线设有七座联络通道或中间泵房,其中广元路下的联络通道、长沙路地下泵站以及桃江路下的联络通道分别在93年底和94年3月修建完成。鉴于含水软土地层中在两区间隧道之间修筑联络通道(或中间泵站)技术难度极大,除了要保证联络通道工程本身的安全与质量外,还需充分保证区间隧道的安全和正常工作条件。在目前联络通道设计和施工均 In order to ensure the safety of passengers during the emergency of subway train operation and to evacuate personnel to safety as soon as possible and to eliminate the water accumulation in tunnels, it is necessary to set up liaison channels or underground pumping stations in the upper and lower tunnels. After the dredging location of the communication channel and its surrounding strata are pre-strengthened or partially replenished and reinforced with the deep mixing method or the rotary jet method, holes are drilled in the tunnel and boring and pouring along the tunnel. Shanghai Subway Line 1 has seven liaison channels or intermediate pumping stations off-line, of which the liaison channel under Guangyuan Road, the underground pumping station at Changsha Road and the liaison channel under Taojiang Road were completed in late 1993 and March 1994, respectively. In view of the technical difficulty of constructing a communication channel (or an intermediate pumping station) between tunnels in the two zones in an aquifer-bearing soft soil formation, in addition to ensuring the safety and quality of the liaison tunnel project itself, it is also necessary to fully ensure the safety and normal operation of the tunnel tunnel condition. In the current communication channel design and construction are