Semi-covering semi-darkened construction method for separated tunnels downwards penetrating through high and steep V-shaped gully eccentric compression section

A construction method and separate technology, applied in tunnels, tunnel linings, underground chambers, etc., can solve the problems of large buried depth and small buried depth of tunnels, and achieve small excavation volume, reduced impact, and convenient construction Effect

Active Publication Date: 2014-06-25
FUZHOU UNIV
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of existing construction methods, avoid large deformation and instability disasters in tunnels, and apply to separate tunnels that pass through high and steep V-shaped gullies under mountainous terrain and geological conditions. At this time, the left and right tunnels

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Semi-covering semi-darkened construction method for separated tunnels downwards penetrating through high and steep V-shaped gully eccentric compression section
  • Semi-covering semi-darkened construction method for separated tunnels downwards penetrating through high and steep V-shaped gully eccentric compression section
  • Semi-covering semi-darkened construction method for separated tunnels downwards penetrating through high and steep V-shaped gully eccentric compression section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0049] Taking a two-way four-lane split tunnel of a highway passing through the biased section of a high and steep V-shaped gully as an example: the starting and ending mileage of the over-gully section of the tunnel is K120+721~K120+739, and the length is 18m, all of which are V-level enclosures. rock. The distance from the vault to the surface of the gully section in the left hole of the tunnel is 3.6m, and the distance from the vault to the surface of the gully section in the right hole is 6.5m. The geological conditions of the stratum in this area are as follows: 0~1.4m below the surface is brown-yellow sloping gravel soil with relatively wet humidity, the main p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a semi-covering semi-darkened construction method for separated tunnels downwards penetrating through a high and steep V-shaped gully eccentric compression section. The semi-covering semi-darkened construction method mainly comprises the steps of (1) carrying out construction preparation, (2) carrying out a cover-excavation method construction technology on a previous shallowly-buried side main tunnel, (3) carrying out a six-step bench excavation method construction technology on a later deeply-buried side main tunnel, (4) taking a slope supporting measure for a high and steep gully region, and (5) carrying out an earth surface waterproof and drainage construction technology. The semi-covering semi-darkened construction method is reasonable in design, compact in construction step and convenient to construct, ground surface subsidence, subsidence of a left tunnel vault and a right tunnel vault, contraction of the peripheries of the interiors of the tunnels and stability of a slope of the high and steep gully region can be effectively controlled, the number of construction disasters is reduced, the project cost is reduced, stability of tunnel surrounding rock and the gully slope is ensured, and the risk of construction of the separated tunnels penetrating through the high and steep V-shaped gully eccentric compression section is reduced.

Description

technical field [0001] The invention relates to a semi-covered semi-dark construction method for a split-type tunnel passing through a biased section of a high-steep V-shaped gully, belonging to the technical field of tunnel construction. Background technique [0002] With the development of my country's national economy, the construction of highway network has continued to increase, and a large number of tunnel projects have emerged. The construction of mountain tunnels inevitably encounters high and steep V-shaped gully through shallow overburden, which at the same time leads to the formation of shallow buried biased tunnels. Generally speaking, the mountains and gullies are eroded by rain all the year round, the geological environment is generally poor, the surrounding rock strength of the tunnel is low, the self-stability is poor, the rock mass is loose and broken, and there is also a certain degree of surface seepage. The uneven stress distribution of the rock mass in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21D9/00E21D11/00
Inventor 黄明邓涛关振长蒋宇静
Owner FUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap