Power tunnel construction method

A construction method and technology of electric tunnels, applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as potential safety hazards and difficulty in accurately controlling the impact of explosions

Inactive Publication Date: 2014-03-19
重庆电力设计院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the drilling and blasting process adopts blasting operations for excavation, and it is difficult to accurately control the impact force of the explosion, which has a certain degree of safety hazard

Method used

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Embodiment Construction

[0024] The core of the invention is to provide a construction method for electric power tunnels, which can ensure the construction safety of urban electric power tunnels and ensure the excavation accuracy of the tunnels.

[0025] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Please refer to Figure 1 to Figure 4 , figure 1 It is a flowchart of a power tunnel construction method in a specific embodiment provided by the present invention; figure 2 It is a schematic cross-sectional view of the tunnel structure in the stakeout step in the specific embodiment provided by the present invention; image 3 It is a schematic cross-sectional view of the tunnel structure in the opening step in the specific embodiment provided by the present invention; Figure 4 It is a schematic cross-...

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Abstract

The invention discloses a power tunnel construction method which comprises the following steps: measuring, namely, confirming the tunnel cross section position by taking a ground control point as a reference point, marking a tunnel rim line, and detecting at regular time by using a measurement instrument; sampling, namely, arranging core taking points along the tunnel rim line, marking core point hole positions, wherein the core point hole positions are tangent to the tunnel rim line; positioning and mounting a drilling machine; paving a track, wherein a tower rack platform is arranged on the rack, a horizontal drilling machine of a drill is fixed on the tower rack platform, and the drilling machine is positioned by using fine tuning equipment so as to enable the axis of the drilling tube of the drilling machine to be parallel to the tunnel axis; trepanning, namely, coring and trepanning by using the horizontal drilling machine; splitting a middle rock body, namely, after all core points are trepanned, vertically cracking the middle rock body by using a vertical impact force; correcting a tunnel, namely, correcting the interior of the tunnel so as to form the complete tunnel cross section; circulating the steps till the tunnel is finally formed.

Description

technical field [0001] The invention relates to the technical field of electric power construction, in particular to an electric power tunnel construction method. Background technique [0002] With the development of urban construction and power industry, the load demand of power grid increases, and the construction of power lines in cities becomes more and more important. However, in modern cities, the available space on the ground can no longer meet the needs of power line construction. [0003] Under such circumstances, underground space has become an important direction for the development of electric power, which has given birth to the construction of power cable tunnels, which are the main carriers of underground power lines. [0004] At present, in some areas where the geological conditions are good and the soil depth is small, the bedrock of the power tunnel is moderately weathered rock, and the drill and blast method is usually used for the construction of the power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/10
Inventor 郑煜杨力武汤昭波黄刚王金鑫周哲
Owner 重庆电力设计院有限责任公司
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