Special-shaped upside-down well wall construction method for simultaneously building vertical shaft and throwing-out air shaft

The invention provides a special-shaped upside-down hanging well wall construction method for simultaneously building a vertical shaft and a throwing-out air shaft. A steel pipe pile is driven, and the pile bottom enters the position below the foundation pit bottom of the throwing-out air shaft and serves as a temporary soil retaining component before primary support construction of the throwing-out air shaft; an opening shallow foundation pit is excavated, and an opening locking ring structure is molded; a rock-soil body is excavated downwards through a well wall upside down method, a throwing-out air shaft primary support is constructed, and throwing-out air shaft temporary section steel diagonal bracings and temporary section steel inclined bracings are erected; when excavation is conducted to the bottom elevation of the throwing-out air shaft foundation pit, a throwing-out air shaft foundation pit cushion layer is laid, and meanwhile a top cover plate is constructed to recover part of the construction sit