Three Accidents Prone to Crawler Rigs?
Crawler Mounted Drilling Rigs drilling problems-drill bit and drill rod buried ① The complexity of geological structure. Because the drill bit and the drill pipe are deep to work 30-50m deep, and the geological structure is complex, there are sandy clay layers, hard weathered rocks, and seemingly loose iron plates with great friction Sand, the most common is a mixture of pebbles and fine sand, which causes an uneven force on the drill bit. When the construction site encounters such a complex formation, the drilling speed and the scale of each drilling should be slowed down first, and the drill rod should be reversed a few more times before lifting the drill bit. ② Mud quality. Mud quality is one of the most important factors affecting pile hole collapse, and whether the pile hole collapses is one of the most direct reasons for the bit and drill pipe being buried. Therefore, the mixing mud must be prepared according to the ratio of bentonite: caustic soda: water = 1:1:50 to ...