Shield construction method and shield cutter head assembly

The invention relates to a shield construction method and a shield cutterhead assembly, aiming at the shield construction method, a cutterhead at the front end of a shield tunneling machine is used for excavating a stratum in a rotating manner, a stratum soil body enters a soil cabin from a slag inlet formed in the cutterhead, and the stratum soil body is also divided into soil blocks in central symmetry positions along the cutterhead by the slag inlet; the soil blocks are cut by an annular cutting tool eccentrically arranged at the center of the cutter head and are divided into non-centrosymmetric soil blocks along the center of the cutter head; the shield cutter head assembly comprises a cutter head, a cutter beam, a cutter head center part, a cutter head outer ring, a cutter head inner ring, a panel, a fishtail cutter, a scraper, an advancing cutter, a scraper, a tearing cutter, an annular cutting cutter, a longitudinal beam, a main driving assembly, a front shield and a spiral conveyor. According to the i