The invention discloses an anti-
subsidence control method by supplying grouting in real time in shield construction. According to the anti-
subsidence control method, a
shield machine cutter, a shield shell, a shield
tail brush, around soil
layers, segments, a first annular segment, a second annular segment, a third annular segment, a water glass
grout grouting
pipe, an auxiliary synchronous grouting
pipe, a main synchronous grouting
pipe, a water glass
grout grouting pump, a water glass
grout preparation
barrel, a
shield machine cement grout synchronous grouting box and a
ball valve are included. Synchronous grouting and secondary grout supplying are effectively integrated,
cement injection and water glass injection are organically combined, therefore the timeliness and the effectiveness of filling of gap in the backs of the segments are strengthened, disturbances caused by intersection construction of a traditional secondary grouting and normal tunneling of the
shield machine are eliminated, compared with the traditional secondary grouting method,
cement grout does not need to be prepared separately, the grouting amount is greatly decreased by separately pumping the water glass grout, the construction schedule is speeded up, the
automation level is improved by taking full use of self equipment of the shield
machine, and the manpower and
material resources are saved.