Do not know how big the stone, if relatively large, can not drill, the depth is relatively deep (can not be mechanically excavated), if not a large area, the stone is not much, you can use barrel drilling, the stone out; You can also use the hammer to break the stone, or squeeze into the wall of the hole; If it is a large area, the location is not very deep (within 10), and the geological conditions are good, you can first use manual digging piles to remove stones and then drill holes into piles, or directly change to manual digging piles.
Do not know how big the stone, if relatively large, can not drill, the depth is relatively deep (can not be mechanically excavated), if not a large area, the stone is not much, you can use barrel drilling, the stone out; You can also use the hammer to break the stone, or squeeze into the wall of the hole; If it is a large area, the location is not very deep (within 10), and the geological conditions are good, you can first use manual digging piles to remove stones and then drill holes into piles, or directly change to manual digging piles.