How to choose the drill bit of a spiral drill?
During the operation of long auger, all the personnel present must wear safety helmet. In the construction process, according to the different geological conditions, choose different bit. The spiral rotary head of long auger rig adopts mud wall protection, which is suitable for cohesive soil, silt, sand, filling soil, crushed stone soil and weathered rock stratum above the water table.
Each drill bit, its role is different, and then the Xuzhou sea GREE machine manufacturing company to tell you in detail about it ~!First, core auger bitApply to gravelly soil, medium hardness rock and weathered rock formation.Second 、 core bitSuitable for weathered rock formations and cracked rocks.Third 、 single bottom layer soil drilling bucketIt is suitable for the construction of clay layer and dry hole.Fourth, double bottom rotary drilling bucketSuitable for the flow of sand, sand, cement poor size smaller pebble layer, wet drilling rotary drill bucket can also be conducive to the construction of the bottom of the hole hole cleaning using double bottom conditions.
Long spiral drilling machine as a construction machinery is often used in a device, the utilization rate will not be less. Long auger drill has a wide range of application, and can meet the needs of bridge construction and high-rise building engineering. At present, rotary drilling rig has been widely used in drilling and grouting projects. For long auger rig operators, requirements are very strict, before the operation can not drink, take medicine, etc., which affect the normal operation of long spiral drill, all can not do.
