KHYD series mine electric variable-speed drill is suitable for rock drilling rock blasting holes,highway subgrade drilling row of holes urban high days building foundation pit in the soil-nail drill;housing,land-based plant-based reinforcement grouting holes,physical exploration of blast hole and so on.The big rig especially is suitable for digging holes,deep hole. Compared with other types power fairly drilling machines,it has light weight,easy to move and aerial operations.