Water stop device for mud-water balance pipe jacking and manufacturing method thereof

The invention discloses a water stop device for mud-water balance pipe jacking. The water stop device comprises a plurality of studs pre-buried along the periphery of a reserved hole of a working welland an annular rubber pad; the inner diameter of the annular rubber pad is smaller than the diameter of the reserved hole, the studs are sleeved with the annular rubber pad; and a pressing plate anda nut are sequentially arranged on one sides, away from the reserved hole, of the studs in a sleeving mode, and one side edge of the pressing plate extends into the reserved hole so as to prevent therubber pad from being turned outwards. By means of the water stop device for mud-water balance pipe jacking, thixotropic mud and quicksand can be prevented from leaking from a gap between a prefabricated pipeline and the reserved hole. 本发明公开了一种泥水平衡顶管用止水装置，包括沿工作井预留洞四周预埋设置的若干螺柱；内径小于所述预留洞直径的环状橡胶垫，套设在所述螺柱上；在所述螺柱的远离所述预留洞的一侧顺次套设有压板和螺母，所述压板的一侧边延伸至所述预留洞中，以阻止所述橡胶垫外翻。通过该泥水平衡顶管用止水装置能够防止触变泥浆和流砂从预制管道与预留洞之间的间隙泄漏。