Method for determining width and angle of blade of disc cutter of whole-section tunnel boring machine

A technology of tunnel boring machine and disc hob, which is applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as restricting the development of disc hob technology, and achieve the effect of promoting development and huge economic benefits.

Active Publication Date: 2014-01-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the design method of the disc hob has not been seen from the public information. The disc hobs used in our country are either imported, or surveyed and mapped, and imitated, and important projects are still mainly imported, which seriously restricts us. Development of National Disc Hob Technology

Method used

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  • Method for determining width and angle of blade of disc cutter of whole-section tunnel boring machine
  • Method for determining width and angle of blade of disc cutter of whole-section tunnel boring machine
  • Method for determining width and angle of blade of disc cutter of whole-section tunnel boring machine

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Experimental program
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Embodiment Construction

[0035] Taking the 17" disc hob (R=216mm) as an example, its maximum thrust F v =250kN, rated penetration P=10mm, then,

[0036] θ = arccos R - P R = arccos 216 - 10 216 = 0.3055 .

[0037] The material of the disc hob is calculated according to high-quality steel, with

[0038] [σ y ]=238MPa, put the above data into formula (1), get,

[0039] h 0 ≥ F v Rθ [ σ y ] = 250 × 10 3 216 × ...

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Abstract

The invention belongs to the technical field of disc cutter design, and particularly relates to a method for determining the width and the angle of a blade of a disc cutter of a whole-section tunnel boring machine. The method for determining the width and the angle of the blade of the disc cutter of the whole-section tunnel boring machine comprises the steps of (1) selecting manufacturing materials of the disc cutter, and determining allowable pressure stress [sigma y], (2) determining the diameter of the disc cutter, determining extreme abrasion loss l, further determining maximum thrust Fv of the disc cutter, (3) determining a central angle theta corresponding to the arc-shaped section of the rock breaking blade of the disc cutter, (4) calculating the width and the angle of the blade of the disc cutter on a cutterhead of the whole-section tunnel boring machine according to the parameters and a given formula. According to the method for determining the width and the angle of the blade of the disc cutter of the whole-section tunnel boring machine, self-dependent design can be carried out according to the conditions of engineering geology, the requirement for the construction period, cutter ring materials and the like of China, blind imitation of foreign products is avoided, development of the disc cutter technology of China can be effectively promoted, limitation of the foreign technology can be broken through, a path of self-dependent innovation can be broken, and huge economic benefit can be created.

Description

technical field [0001] The invention belongs to the technical field of disc hob design, in particular to a method for determining the edge width and edge angle of a full-face tunnel boring machine disc hob. Background technique [0002] At present, the design method of the disc hob has not been seen from the public information. The disc hobs used in our country are either imported, or surveyed and mapped, and imitated, and important projects are still mainly imported, which seriously restricts us. The development of national disc hob technology. [0003] Therefore, establishing a method for determining the edge width and edge angle of disc hobs will effectively promote the development of disc hob technology in our country, break through the limitations of foreign technologies, and embark on a road of independent innovation. It can be independently designed according to my country's engineering geological conditions, construction period requirements, knife ring materials, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08
Inventor 张照煌王磊李福田
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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