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Construction method and equipment for cutting deep-buried structure with small-caliber drill tool

A construction method and structure technology, which is applied to drill pipes, drill pipes, earthwork drilling and mining, etc., can solve the problems of large construction volume, high construction cost, and easy deflection, so as to reduce construction difficulty, reduce construction cost, and speed up construction. The effect of the construction period

Active Publication Date: 2012-07-04
GEZHOUBA GROUP FOUND ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To cut underground structures, the excavation method requires a huge amount of construction, and the construction cost is too high, while cutting with small-diameter drilling tools has the problem of easy deflection during the cutting process

Method used

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  • Construction method and equipment for cutting deep-buried structure with small-caliber drill tool
  • Construction method and equipment for cutting deep-buried structure with small-caliber drill tool
  • Construction method and equipment for cutting deep-buried structure with small-caliber drill tool

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Embodiment Construction

[0017] In this embodiment, the deep buried structure 6 is a section of tunnel damaged by collapse, with both ends closed and about 30 meters away from the ground. There are rigid structures such as steel rails and steel pipes in the tunnel, and the soil above the tunnel is a fine sand layer. It has moderate to weak water permeability and is connected to the Waijiang River, making construction difficult.

[0018] The specific construction steps are as follows:

[0019] On the surface of the deep buried structure 6, carry out measurement and stakeout according to the axis of the deep buried structure 6, and mark the axis and width.

[0020] The guide wall of the cutting groove section is a reinforced concrete structure, the guide wall is 1.8m deep, 0.8m wide, the clear distance is 160cm, and the guide wall is 383cm long. The hardened part of the concrete and the guide wall are poured at the same time, so that the guide wall and the hardened ground are integrated.

[0021] Deep...

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Abstract

The invention discloses a construction method and drill pipe positioning frame for cutting a deep-buried structure with a small-caliber drill tool and relates to the field of deep-buried structure cutting construction. In the method, by filling and pouring concrete in the deep-buried structure, digging a cutting slot above the deep-buried structure, pouring bottom plate concrete in the cutting slot and adopting a method for positioning a drill rod by a positioning frame, the accurate cutting of the deep-buried structure by using the small-caliber drill tool is realized, the construction cost is reduced and the construction period is shortened. The high-precision positioning frame ensures the drill rod operates at a position required in design, so that the drill rod can only operate between four adjacent guide rods without deflection. Guide rods are arranged on both sides of a positioning frame to improve the success rate of the cutting construction.

Description

technical field [0001] The invention relates to the construction field of cutting deep-buried structures, in particular to a construction method for cutting deep-buried structures with a small-diameter drilling tool and a used drill pipe positioning frame. Background technique [0002] At present, in the construction of underground engineering projects, the demolition and reconstruction of pile foundations of original buildings, waste underground pipelines, and damaged underground structures, as well as the disposal of underground structures encountered in the construction of new projects. Shallow obstacles can be cleared by excavation, or extracted from the ground. For underground structures with a large buried depth, special construction methods are required to deal with them. To cut underground structures, the excavation method requires a huge amount of construction, and the construction cost is too high, while cutting with small-diameter drilling tools has the problem th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/10E21B17/10
Inventor 宋玉才焦家训张新军王昇张玉莉
Owner GEZHOUBA GROUP FOUND ENG
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