What's the difference between a long auger and a rotary drill?
Construction methods and applicable places are not the same, the long spiral mainly CFG construction method, spiral grouting pile, the depth is usually 50 meters, mainly for housing constructionRotary excavation can be more deep construction, and better in complex geological conditions, construction, general bridge, railway bridge, viaduct and other pile body
The difference is bigger, the long superiority is in the small caliber (600mm) pile diameter, and the gravel layer is dense, the clay layer is thicker.The advantages of rotary construction, wide range of application, high installed power.From a long-term perspective, rotary digging is better than long spiral.
1., first of all, the cost of machinery, screw digging more expensive than the long spiral.2. construction methods are not the same.3. long spiral diameter generally below 1 meters, 400mm, 500mm, 600mm more, common drilling depth is generally within 15 meters, -32 meters. More than 1 meters in diameter, you have to use rotary digging or other.4. long spiral applies to high-speed rail foundation construction, civil construction, rotary excavation in relatively large diameter foundation construction, such as bridge foundation construction is more common.
