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Construction device and construction method of all-round rotary cutting mixed (arm) pile

A construction device and all-round technology, which is applied to the drilling driving device, sheet pile wall, earthwork drilling and other directions in the wellbore, can solve the problems of not being able to achieve high-quality cement-soil mixing piles, etc., and achieve simple and reliable structure and reasonable design. Effect

Active Publication Date: 2020-12-01
铁三院(天津)工程有限公司 +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two methods have their own advantages and disadvantages, but neither can achieve fast and high-quality formation of cement-soil mixing piles.

Method used

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  • Construction device and construction method of all-round rotary cutting mixed (arm) pile
  • Construction device and construction method of all-round rotary cutting mixed (arm) pile
  • Construction device and construction method of all-round rotary cutting mixed (arm) pile

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, construction device and construction method are introduced in detail. A project uses cement-soil mixing piles for foundation treatment. The designed pile diameter is 600mm, and the construction is carried out using an all-round rotary cutting and mixing (ARM) pile construction device. The construction device includes a mixing drill bit, and the end of the mixing drill bit is a tapered drill tip , a certain distance from the top of the drill tip and two pairs of aerodynamic agitation blades are provided on both sides at a certain distance from the top of the agitation blade. Two pairs of pneumatic agitation blades extend from the drill bit. The hollow part of the drill bit is connected to the air motor; the top of the mixing bit is provided with a flange for connecting with the drill pipe driving device, and the hollow part of the mixing bit is provided with a grouting pipe and an air pipe, and the air pipe is connected to t...

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Abstract

The invention relates to a construction device and a construction method for an all-round rotary cutting mixing (ARM) pile; a soil body can be fully mixed by the device and the method, so that cementand soil can be quickly and fully mixed, and the quality of the pile body of a cement mixing pile is improved. In addition to comprising a conventional mixing drilling device and a spraying device, the construction device is additionally provided with a pneumatic motor and a pneumatic rotary mixing blade; the soil and the slurry are fully mixed by the rotation of the rotary blade, so that the construction quality is improved.

Description

technical field [0001] The invention relates to a construction device and construction method of an all-round rotary cutting and mixing pile (ARM). Background technique [0002] Cement-soil mixing piles are more and more widely used in the construction field because of their convenient construction and low cost. At present, there are two common construction methods. The first one is to spray cement slurry into the soil during the working process of drilling equipment such as a straight-line mixing drilling rig, and to mix evenly with it. After the cement slurry solidifies, a cement-soil mixing pile is formed. The other is to take out the undisturbed soil at the pile position, mix it with cement slurry in a mixing device, and then pour the mixed cement soil into the pile hole through a pump and other equipment to form a cement soil pile. The above two methods have their own advantages and disadvantages, but none of them can achieve fast and high-quality formation of cement-s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/46E21B10/00E21B10/60E21B4/02
CPCE02D5/46E21B4/02E21B10/00E21B10/60
Inventor 王景瑞马立隋孝民邓建义杨耀明李孟雷兰小华宋帅胡博
Owner 铁三院(天津)工程有限公司
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