Embedded type shaft excavation construction technology

A construction technology, embedded technology, applied in shaft equipment, well sinking, mining equipment and other directions, can solve the problem of no large-scale application, and achieve the effect of convenient control, strong adaptability, and shortened construction period

Inactive Publication Date: 2018-04-13
XINJIANG NORTH CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the small-diameter deep shaft is still in the initial stage of experimentation in the world, there is no large-scale application

Method used

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  • Embedded type shaft excavation construction technology
  • Embedded type shaft excavation construction technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 with 2 As shown, an embedded shaft excavation construction technology, the specific steps are as follows:

[0036] S1. Pilot tunnel construction:

[0037] S1-1. Excavating a horizontal tunnel 2 at the bottom of the proposed shaft 10;

[0038] S1-2. Before the construction of the vertical shaft starts, stake out the center of the proposed vertical shaft 10 on the ground 1 at the top of the proposed vertical shaft 10 with a total station, and use the down-the-hole drill to drill a vertical hole with a diameter of 110mm at the center of the proposed shaft. The pilot hole 3, the bottom of the pilot hole 3 is connected with the horizontal tunnel 2. When drilling, adjust the position of the down-the-hole drilling rig to ensure that the hole deviation is within 10cm. After the position of the pilot hole 3 is checked and correct, vertical Drill two holes with a diameter of 110mm as the hoisting basket hoisting rope hole 4, the bottom of the hoisting basket h...

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PUM

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Abstract

The invention discloses an embedded type shaft excavation construction technology. The embedded type shaft excavation construction technology comprises the steps of construction of a pilot hole, expanding excavation of a shaft section and the like. The pilot hole is excavated from bottom to top, the shaft is subjected to expanding excavation from top to bottom, manual slagging off is conducted onthe top, and mechanical deslagging is conducted on the bottom. The embedded type shaft excavation construction technology has the advantages that the adaptive capacity to shaft construction with a complex site rock geological condition is high; the requirement for a site is not high, and the construction requirement of a narrow site can be met; the safety guarantee efficiency is high; quality control is convenient; and the speed is high, the construction period can be shortened, and the construction schedule can be accelerated.

Description

technical field [0001] The invention relates to a built-in shaft of a rock foundation, in particular to an excavation construction technology of a built-in shaft, and belongs to the field of built-in shafts of a rock foundation. Background technique [0002] Shaft excavation technology has been widely used in coal, mines, and large-scale water conservancy and hydropower projects. However, the depth of shafts in domestic hydropower projects in China is generally within 300m, and shafts exceeding 300m are relatively rare. Design departments generally do not design high-depth shafts. . Due to the high construction cost, difficulty and slow construction progress of high and deep shafts, safety accidents are prone to occur. As the hydropower station enters the development of the upstream section, the construction of the hydropower station becomes more difficult. At the same time, it is inevitable to design a small-diameter deep shaft according to the characteristics of the upstr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D1/06E21D1/00
CPCE21D1/00E21D1/06
Inventor 丁午育石体伟朱智华喻涛墨娜
Owner XINJIANG NORTH CONSTR GRP CO LTD
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