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A cutting construction method for high-strength rock formation mountain tunnels

A construction method and high-strength technology, which can be used in tunnels, earthwork drilling, mining equipment, etc., and can solve problems such as unsuitable mountain tunnel hole cutting technology

Active Publication Date: 2021-09-24
NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG +1
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  • Claims
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Problems solved by technology

[0003] According to the actual investigation, the rock cutting technology is generally seen in various stone mining areas at present, and its application in engineering is limited to some local open-air road cuttings and deep foundation pit excavations caused by blasting restrictions, and some of them are used in tunnels. Partial use of sawing equipment for concrete cutting construction, these are measures taken to overcome some unfavorable factors in the construction process, there is no suitable cutting process in mountain tunnels aimed at mining stone

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  • A cutting construction method for high-strength rock formation mountain tunnels

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Embodiment Construction

[0040] The technical solution of the present invention will be clearly and completely described below.

[0041] In order to solve the above problems, the present invention provides a cutting construction method for high-strength rock formation mountain tunnels.

[0042] In order to achieve the technical purpose, the technical solution of the present invention is: a high-strength rock formation mountain tunnel cutting construction method, characterized in that it includes the following steps:

[0043] S1: Set low-velocity explosives on the rock mass to blast the rock mass, and dig out the waste residue generated by the blasting after blasting, and set up anchor bolts to hang the net and spray concrete for initial support, and at the same time strengthen monitoring and measurement work to ensure Surrounding rock stability and construction safety;

[0044] S2: after the blasting in step S1, the lower step rock mass is leveled, and a track is laid on it;

[0045] S3: After the t...

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Abstract

The invention provides a high-strength rock layer mountain tunnel cutting construction method, by adopting the micro-seismic blasting technology of pre-split smooth surface blasting, reducing the vibration and crushing effect of blasting on the rock mass of the lower steps, improving the yield of finished products, and using circular saws and The wire saw cuts the rock mass and transports the cut stones out. Through the cutting construction method adopted in the present invention, the high-strength rock formation mountain tunnel is cut, which reduces the use of pyrotechnics in the blasting operation in the cave, effectively reduces the dust generated by the blasting construction, does not cause vibration damage to the mountain, and finally realizes energy saving and reduction. The goals of emission reduction and resource conservation not only ensure that rare natural resources can be fully utilized, but also effectively improve the benefits of the project.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a method for cutting and constructing high-strength rock formation mountain tunnels. Background technique [0002] At present, the environmental protection situation in our country is becoming more and more serious. In order to curb the excessive mining and deforestation caused by the mining of various economic stones, local governments strictly control the scale of quarry mining. Various types of raw materials, especially high-strength rare raw materials, are in short supply. my country is a mountainous country, and the mountainous area accounts for about two-thirds of the country's land area. [0003] According to the actual investigation, the rock cutting technology is generally seen in various stone mining areas at present, and its application in engineering is limited to some local open-air road cuttings and deep foundation pit excavations caused by blasting restrictions, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D3/04F42D1/00E21D9/10
CPCE21D9/10F42D1/00F42D3/04
Inventor 聂佳佳解长渊陈江平董云罗家宇马亮余侠张威卜祥珂
Owner NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG
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