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Soft rock and large-dip-angle tunnel anchor digital detonator blasting excavation method

A technology of digital detonator and tunnel anchor, which is applied in the field of high-angle tunnel anchor digital detonator blasting and excavation, and soft rock field, can solve the problems of large environmental impact, large disturbance, poor quality of drilling and blasting method, etc., so as to reduce environmental damage and reduce blasting. Vibration, the effect of enhancing overall stability and durability

Active Publication Date: 2019-07-12
THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a method for excavating soft rock and high-inclination tunnel anchor digital detonator blasting, aiming to solve the technical problems of poor quality, large disturbance and great impact on the environment in the existing drilling and blasting method

Method used

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[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0052] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0053] Such as figure 1 As shown, the method for blasting and excavating soft rock and high-inclination tunnel anchor digital detonator provided by this implementation includes the following steps:

[0054] Step S1, according to the setting out of the tunnel anchor center line and the excavation contour line, the excavation area and the excavation boundary are determined, and the excavation of the tunnel anchor is carried out by means of circular blasting. In this embo...

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Abstract

The invention belongs to the field of tunnel anchor excavation construction, and provides a soft rock and large-dip-angle tunnel anchor digital detonator blasting excavation method. After the method is adopted for conducting tunnel anchor blasting excavation, a smooth and flat interface is formed on the excavated boundary, blasting vibration is reduced, influences on surrounding construction buildings are reduced, soft rock and large-dip-angle tunnel anchor micro-disturbance construction is achieved, integrity of surrounding rock is improved, environment damage is reduced, and accordingly integral stability and durability of a tunnel anchor are enhanced. Thus, the soft rock and large-dip-angle tunnel anchor digital detonator blasting excavation method has the obvious advantages that the vibration rate is small, surrounding rock disturbance is reduced, the blasting effect can be effectively improved, tunnel anchor construction and later operation safety is ensured, and influences on thesurrounding construction buildings can be reduced as well.

Description

technical field [0001] The invention belongs to the field of tunnel anchor excavation construction, and in particular relates to a method for blasting and excavating an anchor digital detonator in soft rock and large-inclination tunnels. Background technique [0002] With the construction of transportation infrastructure successively started, the suspension bridge can make good use of the performance of materials and the high-span ratio of stiffened beams. At the same time, it has the characteristics of low material consumption, light weight, and strong ability to cope with complex terrain and geological conditions. It is used in various systems. The advantages of bridges are gradually highlighted, and are favored by more and more builders. At present, the common anchorage forms of suspension bridges are mainly divided into gravity anchors and tunnel anchors, and tunnel anchors are recognized by everyone for their low cost and environmental friendliness. Most domestic tunne...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/04
CPCF42D1/00F42D3/04
Inventor 兰晴朋龚磊何承林董传洲王勇刘爱莲许国伟黄卓英
Owner THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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