Rational Design of Tunnel Supports: Tunnel Support Loading Caused by Rock Failure

Abstract

Two methods are presented for the analysis of tunnel support loading caused by rock failure. In the first part closed-form solutions are used; in the second, numerical techniques. Emphasis is put upon the statical indeterminacy of the problem and upon the necessity for considering the relative displacements between ground and support. From this follows the need for a realistic calculation of the stiffness of ground and support, as well as the need to consider the sequential development of the interaction between these two elements. It is assumed that the rock mass behavior during failure is softening and dilatant. Interface problems between ground and support that can strongly influence the effective support stiffness are discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1975
Accession Number
ADA013405

Entities

People

  • Jaak J. Daemen

Organizations

  • University of Minnesota

Tags

Communities of Interest

  • Air Platforms
  • Cyber

DTIC Thesaurus Topics

  • Civil Engineering
  • Computational Science
  • Computer Programs
  • Construction
  • Continuum Mechanics
  • Crystal Structure
  • Elastic Properties
  • Engineers
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Materials
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Numerical Analysis
  • Stress Strain Relations
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Dynamics.
  • Theoretical Analysis.