HG 1200 model concrete tank truck is a key construction equipment for theconcrete support in stope sill structure of block caving method in Tongkuangyu copper mine,Zhongtiaushan non-ferrous company. Its successful development opens a new way for under-ground bulk concrete placement construction, Key structures of the truck along with itsworking principle,technical performances,major feactures and applications are describedsvstematieally.