Slurry shield and anti-blocking method thereof

The invention provides a slurry shield and an anti-blocking method thereof.The slurry shield comprises a cutterhead, a slurry bin, a slag discharging box, an on-off device and a slurry discharging pipe, the slurry bin is arranged on the rear side of the cutterhead, and the on-off device is installed on the slag discharging box and used for communicating or separating the slurry bin and the slag discharging box; the slurry discharging pipe is movably connected to the slag discharging box and can move to be communicated with the muddy water bin, and the technical problems that when a slurry shield encounters slag stone accumulated at the bottom of the muddy water bin, the treatment difficulty is large, the construction efficiency is affected, and large safety risks exist are solved. 本发明提供了一种泥水盾构及其防堵方法，该泥水盾构包括：刀盘、泥水仓、排渣箱、通断装置和排浆管，所述泥水仓设置于所述刀盘的后侧，所述通断装置安装于所述排渣箱，用于将所述泥水仓与所述排渣箱连通或隔断，所述排浆管可活动地连接于所述排渣箱，所述排浆管能够活动至与所述泥水仓连通，解决了泥水盾构在遇到渣石积在泥水仓底部时，处理难度大，影响施工效率，存在较大安全风险的技术问题。