Application of cone bit of hydraulic drilling rig to treatment of bottom opening edge curling of steel pipe pile

Abstract

The invention discloses application of a cone bit of a hydraulic drilling rig to treatment of bottom opening edge curling of a steel pipe pile. The cone bit of the hydraulic drilling rig comprises a top plate, a center post, a plurality of rib plates and a drill cutter blade, wherein the center post is fixed to the bottom center of the top plate; the rib plates are fixed between the side wall of the center post and the top plate; and the drill cutter blade is fixed at the bottom of the center post. When drilling sticking occurs in the drill hole forming process, the occurrence of the edge curling of the steel pipe pile is determined; a drill pipe is lifted out of the steel pipe pile; the cone drill is installed; the low-speed rotating drilling is performed; and the drilling depth exceeds abottom opening of the steel pipe pile for 50cm, so that the treatment on the edge curling section is totally completed. When being used for solving the problem of bottom opening edge curling of the steel pipe pile, the cone bit of the hydraulic drilling rig has the advantages that safety and reliability are realized; the operation is simple; and economic performance and reasonableness are realized, and the like. The popularization conditions are realized.

Description

technical field [0001] The invention relates to the application of a conical drill bit of a hydraulic drilling rig in processing the curling of the bottom mouth of steel pipe piles, belonging to the field of steel pipe piles. Background technique [0002] The platform pile foundation of the high-piled wharf in the inland river mostly adopts the form of prefabricated rock-socketed steel pipe piles with core columns (the steel pipe piles are first driven into the piles, and then holes are formed in the piles and reinforced concrete core columns are poured). design requirements. During the pile sinking process of the steel pipe pile, affected by the impact force of the pile hammer, complex geological conditions and other factors, it is very easy to cause the bottom edge of the steel pipe pile to be curled, which will adversely affect the subsequent rock-socketed pile construction. The conventional treatment method for the bottom edge curling of steel pipe piles is to use artif...

AI Technical Summary

Problems solved by technology

The construction of rock-socketed piles coincided with the flood period of the Yangtze River, and the water level was high, which greatly increased the safety risk of personnel underwater cutting operations

Images