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Long spiral extrusion pile drilling machine and drilling method thereof

A drilling method and a technology for extruding and expanding piles, which are applied in drilling equipment and methods, directional drilling, earth-moving drilling, etc., can solve the problems of difficult downward drilling, collapsed holes, high density of pebbles, etc., and improve construction efficiency. , the effect of reducing the phenomenon of collapse

Pending Publication Date: 2018-05-29
BEIJING G&M ENG CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the sandy pebble formation, the density of the pebbles is high and the particle size of the boulders is large. It is difficult for the existing long auger drilling rig to drill down in the sandy pebble formation. hole

Method used

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  • Long spiral extrusion pile drilling machine and drilling method thereof
  • Long spiral extrusion pile drilling machine and drilling method thereof
  • Long spiral extrusion pile drilling machine and drilling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A long spiral extruded and expanded pile drilling machine, such as figure 1 As shown, it includes an extruder body 1, a pile frame 2 fixed vertically on the extruder body 1, a drilling mechanism 3 slidably arranged on the pile frame 2, and an extruder body 1 for The hoisting mechanism 4 that drives the drilling mechanism 3 up and down, wherein, the extruding machine body 1 is provided with a walking mechanism that drives the overall body to walk, and is used to drive the extruding machine to travel and turn so as to better locate the pile position. The rotary mechanism, when in use, drives the drilling mechanism 3 to find the pile position by the traveling mechanism, the rotary mechanism, etc., and then drives the drilling mechanism 3 to lift up and down by using the winch mechanism 4 to punch holes.

[0041] Such as figure 2 As shown, wherein, a slide rail 21 is fixedly arranged on the pile frame 2, and the drilling mechanism 3 slides on the slide rail 21.

[0042]T...

Embodiment 2

[0049] A kind of drilling method of long spiral extruded and expanded pile drilling machine, such as image 3 shown, including the following construction steps:

[0050] Step a, such as image 3 As shown, the driving drill rod 33 is drilled into the hole vertically downwards;

[0051] Step b, such as Figure 4 As shown, when drilling into a certain depth, the drill rod 33 is lifted to drill, so that the drill rod 33 is separated from the borehole 5;

[0052] Step c, add auxiliary extruder 51 to the drilled hole 5, drill into the shape;

[0053] Step d, repeating the steps S2 and S3 until the drilling 5 is formed.

[0054] In step a, before implementation, the extruder main body 1 is first driven by the traveling mechanism to move to the position where the hole 5 is to be drilled, and the drill rod 33 is driven to rotate by the rotary mechanism so that the drill rod 33 can be aligned to the position for drilling. hole.

[0055] In the drilling process, different situation...

Embodiment 3

[0059] combine Figure 4 and Figure 5 As shown, the difference between this embodiment and Embodiment 2 lies in the structure of the geological layer: when the geological layer is gravel, and when there is no water in the borehole 5, an auxiliary extrusion 51 is added to the borehole 5, and the auxiliary extrusion 51 is selected Clay is then drilled into, and the clay is squeezed between the gravel gaps by the extrusion effect of the roller cone bit 34, and the borehole 5 is reinforced.

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Abstract

The invention discloses a drilling method of a long spiral extrusion pile drilling machine. The drilling method includes step a, pushing a drill pipe vertically and downwardly to drill a hole; step b,when the drill pipe reaches a certain drilling depth, pulling up the drill pipe; step c, adding an assistant extruder into the drill hole, and re-pushing the drill pipe; step d, repeating the steps S2 and S3 until the drill hole is formed. The invention further discloses the long spiral extrusion pile drilling machine. The long spiral extrusion pile drilling machine comprises an extruding machinebody, a pile frame, a drilling mechanism and a hoisting mechanism. The pile frame is vertically fixed to the extruding machine body, the drilling mechanism slides on the pile frame, and the hoistingmechanism used for driving the drilling mechanism to lift up and down is arranged on the extruding machine body. The drilling mechanism comprises a mounting plate, a power head, the drill pipe and a roller bit. The mounting plate is connected to the pile frame slidably. The power head is fixed to the mounting plate. The drill pipe is arranged on the lower side of the mounting plate, and is connected with the power head rotationally. The roller bit is fixed to one end, away from the power head, of the drill pipe. During drilling, the drill hole is reinforced, drill pipe lifting can be realized,and accordingly, the drill hole is not easy to collapse.

Description

technical field [0001] The invention relates to a technique for forming holes in sand and pebble layers by a drilling rig, in particular to a drilling method for a long spiral extruded and expanded pile drilling machine and the long spiral extruded and expanded pile drilling machine. Background technique [0002] Construction of prefabricated piles The construction methods of prefabricated piles are: hammering method, vibration method, pressing method and water jet method. The first is the hammering method, which is the most widely used pile sinking method in pile foundation construction. The impact energy of the hammer overcomes the resistance of the soil to the pile and sinks the pile to a predetermined depth. It is generally suitable for hard plastic and soft plastic viscous Soil, when it is difficult to use sandy soil or gravel soil, it can be supplemented by drilling method and water flushing method. Commonly used pile hammers include steam hammer and diesel hammer (se...

Claims

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Application Information

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IPC IPC(8): E21B7/04E21B7/28E21B33/13E21B7/02
CPCE21B7/02E21B7/04E21B7/28E21B33/13
Inventor 蒋瑞泳刘洋洋甄德鹏刘欢徐宝宏史志荣
Owner BEIJING G&M ENG CONSTR CO LTD
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