Modular cross-wall structure for civil work

The invention discloses a modular cross-wall structure for a civil work, which is formed by splicing a plurality of retaining walls laterally. Each retaining wall is mainly formed by a base, a plurality of regulating building blocks and a cover board; each base is vertically provided with integrally formed foundation building blocks; longitudinal positioning grooves on the lower surfaces of the regulating building blocks on each upper layer are clamped on longitudinal positioning convex strips on the upper surfaces of the regulating building blocks on the adjacent lower layer; the longitudinal positioning grooves on the lower surfaces of the regulating building blocks on the lowermost layer are clamped on longitudinal positioning convex strips on the upper surfaces of the foundation building blocks; longitudinal positioning grooves on the lower surfaces of the cover boards are clamped on the longitudinal positioning convex strips on the upper surfaces of the regulating building blocks on the uppermost layer; and one end of each base is provided with a dovetail-shaped lock connector and the other end of the base is provided with a locking groove matched with the lock connector so as to implement locking of the left and right bases. The modular cross-wall structure adopts the modular design, is convenient and rapid to construct and has no technical requirements. Anyone can construct the modular cross-wall structure after simple training. Each component can be uniformly made well in a factory and then transported to the field to be installed; commercial production can be implemented.