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Rotary drilling rig coordinated with percussion drill hole-forming construction method

A technology of rotary drilling rig and percussion drilling rig, which is applied in the direction of foundation structure engineering, sheet pile wall, foundation structure test, etc., to achieve the effect of ensuring the construction quality

Inactive Publication Date: 2013-05-08
路桥华祥国际工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to solve the problem of pile foundation construction in permafrost permafrost construction areas with rock-socketed ends by providing a drilling method with a rotary drilling rig and a percussion drilling rig

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  • Rotary drilling rig coordinated with percussion drill hole-forming construction method
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  • Rotary drilling rig coordinated with percussion drill hole-forming construction method

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Embodiment Construction

[0037] The specific embodiment of the present invention is described below in conjunction with accompanying drawing of description:

[0038] see figure 1 As shown, it is a flow chart of the hole-forming construction method of the rotary drilling rig in cooperation with the percussion drilling rig of the present invention.

[0039] The construction site has achieved "three links and one leveling", building access roads, erecting power lines, ensuring construction water, and laying a 50-100cm thick gravel working cushion in the area of ​​the drilling rig working platform and within 3 meters on both sides.

[0040] Set up drainage ditches around the drilling site.

[0041] The ground and underground obstacles and pipelines within the construction scope shall be cleared or relocated.

[0042] Rotary drilling: In order to effectively reduce the disturbance of heat to the permafrost around the pile during the hole-forming process, the pile foundation in the permafrost section of t...

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Abstract

The invention relates to a rotary drilling rig coordinated with percussion drill hole-forming construction method which comprises forming field, locating and paying off, measuring elevation, calculating rotary digging depth and installing a plurality of temperature sensors in a permanent steel protective cylinder; rechecking a pile position; rotationally digging and drilling into a tundra layer; burying a temporary steel protective cylinder; measuring the depth of a hole and checking the formed hole; burying the permanent steel protective cylinder into a non-tundra layer; pulling out the temporary steel protective cylinder and moving a machine to conduct next construction of forming the hole rotationally; secondarily locating and sampling; locating a percussion drill; punching the hole; meanwhile digging a mud pit, producing mud and pouring the mud into the hole; secondarily measuring the depth of the hole and checking the formed hole; cleaning the hole; processing a reinforcing cage and hanging the reinforcing cage; installing a guide tube and conducting a water sealing test on the guide tube; measuring sediment and pouring concrete underwater; and curing the concrete. The rotary drilling rig coordinated with percussion drill hole-forming construction method offers a feasible technical measure for socketed pile construction and road repairing on frozen earth on island shape frozen earth area at high altitude in China and has notable economic benefit.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction method for forming a hole in a high-latitude island-shaped permafrost region with a rotary drilling machine for a rock-socketed end-bearing frozen soil pile and an impact drilling machine. technical background [0002] The geological condition of the permafrost section is mainly silty clay, and the underlying layer is mostly fully weathered to slightly weathered granite, and has a certain depth of rock-socketing. The permafrost section is in a perennial swamp wetland. [0003] The percussion drilling method is more suitable for the construction of rock-socketed end-bearing piles under ordinary geological conditions. However, due to the slow drilling speed and large thermal disturbance in permafrost areas, hole collapse is prone to occur, and the direct use of percussion drilling cannot meet the requirements of pile foundation construction in island-like permafrost areas. ...

Claims

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Application Information

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IPC IPC(8): E02D5/38E02D33/00
Inventor 邵敏泽李结义赵常红李志龙
Owner 路桥华祥国际工程有限公司
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