Tunnel MJS construction method foundation reinforcing device and using method thereof

The invention relates to a tunnel MJS construction method foundation reinforcing device and a using method thereof.The reinforcing device comprises a rack, a grouting machine, an infrared emitter, an infrared receiver, a first mounting assembly and a second mounting assembly, and the infrared emitter is rotatably connected with one side of a grouting rod on the grouting machine through the first mounting assembly; the infrared emitter is coaxial with a grouting rod on the grouting machine when the first mounting assembly rotates to a first position, the second mounting assembly comprises a positioning disc, a gear, a plurality of supporting rods and an infrared receiver, the gear is coaxially arranged on the positioning disc, each supporting rod comprises a fixing rod and a rack, one end of the rack is meshed with the gear, and the other end of the rack is meshed with the infrared receiver; the gear is used for driving the multiple fixing rods to synchronously stretch out till the end faces of the other ends