Tunnel excavation method based on hydraulic impact crushing and static crushing
A technology of static crushing and hydraulic impact, which is applied in tunneling, blasting, earthwork drilling and mining, etc. It can solve problems such as unfavorable self-stabilization ability of tunnel surrounding rock, uncontrollable blasting degree, and vibration disturbance of buildings, so as to simplify blasting construction links, avoiding ground subsidence, and reducing construction costs
Pending Publication Date: 2021-11-05
SHANDONG UNIV
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Problems solved by technology
However, this method has problems such as over-excavation and under-excavation that cannot be controlled by the degree of blasting, which is likely to form a section. The extreme vibration brought by the blasting is not conducive to the self-stabilization of the surrounding rock of the tunnel. The surrounding buildings are disturbed by the vibration, and the construction environment is harsh. Splashing brings safety hazards and blasting in tunnels will cause air pollution and other problems, and it is impossible to realize safe, efficient and environmentally friendly excavation of tunnels
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[0040] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
[0041] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the invention clearly states otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprise" and / or "comprise" are used in this specification, they mean Indicate the presence of features, steps, operations, means, components and / or combinations thereof;
[0042] As introduced in the background technology, there are existing tunnel blasting excavation methods in the prior art, wh...
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The invention discloses a tunnel excavation method based on hydraulic impact crushing and static crushing, solves the problem that potential safety hazards exist in a tunnel construction blasting environment in the prior art, and has the beneficial effects that the potential safety hazards are reduced, air pollution is reduced, and the construction efficiency is improved. According to the specific scheme, the tunnel excavation method based on hydraulic impact crushing and static crushing comprises the steps that positioning and paying-off are conducted on a tunnel face to determine the tunnel excavation position and direction; after positioning and paying off are conducted, hydraulic impact is conducted on the tunnel face, to form a tunnel excavation contour line through cutting, and thus an excavated rock mass is separated from surrounding rock; and drilling is conducted on the tunnel face, a static crushing agent is placed in a drilled hole, and after the static crushing agent expands, the excavated rock mass is crushed.
Description
technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a tunnel excavation method based on hydraulic impact crushing and static crushing. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The 21st century is a century of extensive development and utilization of underground space. With the rapid development of my country's economy, the demand for transportation is increasing day by day. stage. The whole process of tunnel construction is constantly optimized towards a safer, more efficient and more environmentally friendly direction. [0004] According to the inventor's understanding, the drilling and blasting method is currently the main excavation method for tunnels. According to the design requirements of the tunnel, combined with the shape, structure, and geological survey d...
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IPC IPC(8): E21D9/00E21D9/10F42D3/04F42D1/00
CPCE21D9/00E21D9/1066F42D3/04F42D1/00
Inventor 刘洪亮刘洋李术才李利平周宗青成帅周申范宏运杨光宇李尚安
Owner SHANDONG UNIV