Research in Ground Support and Its Evaluation for Coordination with System Analysis in Rapid Excavation
Abstract
A method of ground support requirement prediction for rock tunnels is described. This prediction is based on the investigation of the pre-bid geology of case studies of 32 tunnel projects. A method of evaluating a rock mass structurally has been developed based on the interrelationship of 7 geologic factors. The relative evaluation of vectors are based on the geologic data obtained from the case studies. The method, called Rock Structure Rating, is a numerical value that can vary on a scale of 0 to 100. The actual ground support provided in the case studies has been evaluated by comparing the supports to a common datum. This method is called the Support Index and also varies numerically from 0 to 100. The method for correlating these factors is discussed, both as a means for refining the values of the Rock Structure Rating and for future use in predicting support requirements based on pre-bid geological investigations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 26, 1971
- Accession Number
- AD0732029
Entities
People
- George E. Wickham
- Henry R. Tiedemann