A mechanized construction method for V-level high-risk geological surrounding rock tunnels
A construction method and high-risk technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems affecting construction safety and construction efficiency, large deformation of weak surrounding rocks, etc.
Active Publication Date: 2021-04-30
林晓
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Problems solved by technology
When tunnels pass through areas of high geostress, faults, or encounter weak surrounding rocks, large deformations of weak surrounding rocks often occur, which affects construction safety and construction efficiency
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Embodiment Construction
[0026] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0028] see figure 1 and figure 2 , the embodiment of the present invention provides a V-level high-risk geological surrounding rock tunnel mechanized construction method. Tunnel surrounding rocks are generally divided into six grades: I, II, III, IV, V, and VI. The first grade of surrounding rock is the best, which is basically a solid piece of hard stone; the sixth grade of surrounding rock is the worst, basically broken of soft soil. Surrounding rocks above grade IV are weak surrounding rocks and belong to high...
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The embodiment of the present invention discloses a mechanized construction method for a V-level high-risk geological surrounding rock tunnel, which can improve the excavation efficiency of tunnel excavation. The method includes: using advanced support equipment to carry out advanced support construction; using marking equipment to divide the tunnel face into the upper step of the left pilot pit, the upper step of the middle support soil, the upper step of the right pilot pit, and the left The middle step of the pilot pit, the middle step of the middle supporting soil, the middle step of the right pilot pit, the lower step of the left pilot pit, the lower step of the middle supporting soil, and the lower step of the right pilot pit; Carry out drilling and blasting construction at the same time; carry out support construction on the steps after drilling and blasting construction. The invention is suitable for the excavation construction of complex geological tunnels with V-level surrounding rocks.
Description
technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a mechanized construction method for V-level high-risk geological surrounding rock tunnels. Background technique [0002] With the rapid development of my country's high-speed rail construction, deep-buried tunnel projects have gradually appeared and increased. When tunnels pass through areas of high geostress, faults, or encounter weak surrounding rocks, large deformations of weak surrounding rocks often occur, which affects construction safety and construction efficiency. Contents of the invention [0003] In view of this, an embodiment of the present invention provides a mechanized construction method for a V-level high-risk geological surrounding rock tunnel, which can improve tunnel construction efficiency. [0004] According to an embodiment of the present invention, a mechanized construction method for a V-level high-risk geological surrounding rock tunnel i...
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IPC IPC(8): E21D9/00E21D11/10E21D11/18E21D21/00E21D20/02
CPCE21D9/006E21D11/105E21D11/18E21D20/02E21D21/0026
Inventor 林晓高军申百囤曹振兴杨文国汤宇杨立云彭学军蔡荣喜李波贾超刘凯文徐凡献
Owner 林晓