A Construction Method of Diagonal Orthogonal Construction Using Bias Pressure Entry

A technology of oblique normal construction and construction method, which is applied in excavation, earthwork drilling, foundation structure engineering, etc., to achieve the effects of reduced excavation volume, short construction period and controllable quality

Active Publication Date: 2021-08-31
POWERCHINA HUADONG ENG COPORATION LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The oblique hole entry method is generally only suitable for steep hole entrances with good geological conditions, and the oblique hole entry method is generally not used for grade V hole sections with broken surrounding rocks and poor stability.

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
  • A Construction Method of Diagonal Orthogonal Construction Using Bias Pressure Entry
  • A Construction Method of Diagonal Orthogonal Construction Using Bias Pressure Entry
  • A Construction Method of Diagonal Orthogonal Construction Using Bias Pressure Entry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0034] If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field or according to the product specification. The products used are those whose manufacturers are not indicated, and they are all conventional products that can be obtained through purchase.

[0035] The oblique construction method of the bias pressure tunnel of the present invention comprises the following steps:

[0036] Construction of intercepting ditches → excavation protection at the entrance section → thrust pier construction → oblique arch construction → advance support drillin...

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 belongs to an oblique frontal construction method for tunnel entry with bias pressure, which refers to that the excavation of the tunnel surface is basically parallel to the contour line of the tunnel entrance, obliquely intersected with the tunnel axis, and closely adheres to the tunnel surface in combination with the trend of the mountain body when entering the tunnel. Construction of oblique arches, steel arches are erected one by one perpendicular to the tunnel axis, and an open hole is made outside the arches and backfilled. The construction method of the invention can ensure the safe and smooth entry of tunnels with good geological conditions and shallow buried bias terrain conditions, can greatly reduce the excavation volume of the mountain, fully embodies the concept of harmonious development between man and nature, and has the advantages of simple method Practical, low construction cost, short construction period, safe and reliable, and quality controllable.

Description

technical field [0001] The invention belongs to an oblique positive construction method of bias pressure entry into a hole. Background technique [0002] In the process of highway construction, the route selection will inevitably pass through steep mountains. When tunnels are built at these positions, the opening of the tunnel is likely to be biased. In the prior art, when constructing a tunnel under biased pressure, for a steep entrance with good geological conditions, an oblique and orthogonal construction method is often used to reduce the excavation of side and uphill slopes. [0003] At present, there are two commonly used construction methods for tunnel arches: one is to use the method of erecting conventional steel arches with left and right dislocations, that is, the erection direction of the steel arches is 45° to the axis of the tunnel. ° ~ 60° angle installation, the steel arches on both sides are erected with the method of "dense outside and sparse inside", and ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D11/10E21D11/18E21D20/00E02D17/20E03F3/04
CPCE02D17/20E03F3/046E21D9/00E21D11/10E21D11/18E21D20/00
Inventor 张程凯童育聪胡建华闫自海尤鸿波叶卡尔李师陈子健
Owner POWERCHINA HUADONG ENG COPORATION LTD
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