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Method for performing in-water pile foundation hole drilling by large-diameter reverse circulation roller cone drilling

A reverse circulation, large-diameter technology, used in drilling equipment and methods, earth-moving drilling, drilling equipment, etc. High hole efficiency, strong bending resistance, and the effect of reducing construction steps

Active Publication Date: 2016-01-20
CCCC FOURTH HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary roller cone drilling rigs have weak slag discharge ability, small hole diameter, large volume and heavy weight, inconvenient transportation, and are not suitable for underwater drilling construction.

Method used

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  • Method for performing in-water pile foundation hole drilling by large-diameter reverse circulation roller cone drilling
  • Method for performing in-water pile foundation hole drilling by large-diameter reverse circulation roller cone drilling
  • Method for performing in-water pile foundation hole drilling by large-diameter reverse circulation roller cone drilling

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Embodiment Construction

[0026] Such as figure 1 Shown, the present invention a kind of method that adopts large-diameter reverse circulation roller cone drill to carry out the method for pile foundation drilling in water, comprises the following steps:

[0027] (1) Set up a temporary bridge and a water construction platform: build a temporary bridge from the shore to the water, and then build a rectangular water construction platform connecting the temporary bridge, divide the construction platform into a main platform and an auxiliary platform along the length direction, and the main platform is located on the side of the pile , used to place the drilling rig, the auxiliary platform is located above the pile position, and the drilling opening is reserved on the auxiliary platform;

[0028] (2) Drilling rig in place: transport the large-diameter reverse circulation roller cone drilling rig to the construction platform through the bridge, and place it on the main platform of the construction platform;...

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Abstract

The invention relates to a method for performing in-water pile foundation hole drilling by large-diameter reverse circulation roller cone drilling. The method comprises the following steps of (1) building a temporary bridge and an on-water construction platform; (2) putting a drilling machine in place; (3) installing a drill pipe; (4) setting a slurry circulation system; and (5) performing hole drilling construction. A construction platform can bear a large-size great-self-weight large-diameter reverse circulation roller cone drilling machine; the unique drill pipe is used; good anti-folding anti-twisting and pressure-bearing performance is realized; different roller cone drill bits can be replaced when different hard rock layers are met; a drill pipe pressurizing device is used, so that when the drilling is too slow, the drill pipe can be pressurized through the drill pipe pressurizing device, and the extrusion crushing and rock cutting capability is improved; the requirement on the specific gravity of the slurry is low, river water can be used for direct water supplementation; and the drill lifting is performed before the pile pouring, and the construction step of hole cleaning can be reduced.

Description

technical field [0001] The invention relates to a method for constructing pile holes of bridge pile foundations, in particular to a method for constructing pile holes in water by using a large-diameter roller cone drilling rig. Background technique [0002] Present highway cross-river bridge construction, for pile foundation pile hole construction in water, usually adopts rotary drilling, percussion drilling, circulation drilling (positive circulation, reverse circulation) etc. to carry out drilling. Rotary drilling drills use the auger bit to break the rock, which is easy to shake when drilling into hard or extremely hard rock formations, the quality of the hole is difficult to control, and the risk factor is high when working on water, and it is easy to cause pollution during the drilling slag collection process; The impact drill uses the drill hammer to repeatedly hit the broken rock, which has low efficiency and high noise, and it is troublesome to clean the pile hole be...

Claims

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Application Information

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IPC IPC(8): E21B7/12E21B15/02E21B21/12E21B19/08
Inventor 韩瑞生王安那礼春张旭烽陶连清何淼
Owner CCCC FOURTH HIGHWAY ENG
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