A construction method for shield tunneling in composite strata

A technology of composite stratum and construction method, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the problems that affect the heat generation, wear, cutting efficiency and reliability of cutterhead tools, increase the difficulty of cutterhead design, etc., and achieve easy promotion Ease of use, realization and operation, and the effect of preventing partial wear

Active Publication Date: 2018-08-17
中铁二十局集团第五工程有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design structure of the cutterhead such as tool layout, cutterhead configuration, opening position, and opening ratio directly affects the heat generation, wear, cutting efficiency and reliability of the cutterhead tool, and the mutual restriction between the tool layout and the opening position increases the design of the cutterhead. difficulty

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 for shield tunneling in composite strata

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Such as figure 1 Shown, the present invention comprises the following steps:

[0034] Step 1. Geological exploration of the compound stratum: by drilling holes on the compound stratum, the geological conditions of the compound stratum are ascertained;

[0035] Step 2. Select the shield cutting tool according to the geological conditions of the compound stratum, including the following steps:

[0036] Step 201, analysis of the force of the shield cutter:

[0037] Step 201, layout of shield cutters: install different cutters according to the geological conditions of the compound stratum, and the distance between the cutters in Indicates the rock breaking angle of the composite formation, T indicates the width between two adjacent hob tips, H indicates the penetration of the hob, and the cutters are arranged on the cutter head according to the tool tip distance S;

[0038] Step 202, calculate the pressure P of a single hob in the crushing zone, Among them, C repres...

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 discloses a shield tunneling construction method of a composite stratum; the method includes step 1, geological survey of composite stratum; step 2, selection of a shielding cutter according to the geological condition of the composite stratum; step 3, selection of shield tunneling construction mode according to the geological condition of the composite stratum; step 4, selection of shield tunneling parameter according to the geological condition of the composite stratum, wherein the step 4 includes step 401 of calculating push force of a shield tunneling machine; step 402 of calculating torque of the shield tunneling machine; step 5, shield tunneling construction, wherein the step 5 includes step 501 of feeding back the shield tunneling direction; step 502 of adjusting the shield tunneling direction. The shield tunneling construction method is simple in structure and reasonable in design; according to the change of the composite stratum, the method can reasonably select the shield tunneling machine, correctly select the tunneling parameter, prolong the service life of a cutter disk, improve the adaptation of the cutter disk to the composite stratum, and guarantee the safe, rapid and economic performance of the shield construction; thus the method is good in using effect and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of tunneling construction methods, and in particular relates to a shield tunneling construction method for composite strata. Background technique [0002] In the hard rock construction of large-diameter shield tunneling, the reasonable design of the cutter head is a key factor to ensure the construction schedule and construction cost. The cutterhead cutter is the key component to achieve the functions of crushing and stripping rock and soil, dregs and soil flow, and interface support during the excavation process. The design technology of the cutter head is one of the core technologies of the earth pressure balance shield machine. Shield tunneling will encounter various strata in underground excavation, from silt, clay, sand to soft rock and hard rock, etc. Under complex ground conditions, the physical parameters of the medium change randomly and vary greatly, and coupled with multi-field coupling, The str...

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): E21D9/08E21D9/093
CPCE21D9/08
Inventor 刘晓勇吕岩张云飞加武荣乔文件张涛涛师永谭高福
Owner 中铁二十局集团第五工程有限公司
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