Device suitable for high-precision pre-embedding of strip-shaped keels in vertical shaft and positioning method

The invention discloses a device suitable for high-precision pre-embedding of strip-shaped keels in a vertical shaft and a positioning method. The device comprises a laser emitting device and a positioning device. The positioning device comprises a positioning platform, adjusting devices and a base platform; the positioning platform and the base platform are of two sector-disk-shaped structures which correspond mutually, the positioning platform and the base platform are connected through I-shaped steel, clamping grooves are formed in the positions, corresponding to pre-embedding pieces, of the circular arc edges of the positioning platform and the base platform, and light-transmitting positioning holes are formed in the central angle positions of the positioning platform and the base platform; the two or more adjusting devices are mounted on the inner side of the circular arc edge of the positioning platform for adjusting the distance between the positioning platform and the shaft wall, so that the centers o