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

A technology for hydraulic drilling rigs and steel pipe piles, which is applied in the direction of drill bits, sheet pile walls, drilling equipment, etc. It can solve the problems of high water level and increase the safety risk of personnel underwater cutting operations, and achieve the effect of reducing safety risks and saving costs

Inactive Publication Date: 2019-06-04
CCCC FIRST HARBOR ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below. However, it should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0021] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention, and the terms used in the description of the present invention herein are only to describe specific implementations The purpose of the example is not intended to limit the present invention.

[0022] Such as figure 1 , figure 2 As shown, the application of a conical drill bit of a hydraulic drilling rig in processing the curling of the bottom opening of a steel pipe pile, the conical drill bit of a hydraulic drilling rig inc...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D13/08E21B7/00E21B10/42
Inventor 黄金保陈明杰高巍马彦伟徐鸿玉
Owner CCCC FIRST HARBOR ENG
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