Accession Number : AD0701086

Title :   STRAIN DISTRIBUTION AROUND UNDERGROUND OPENINGS. STATISTICAL METHODS TO COMPILE AND CORRELATE ROCK PROPERTIES AND PRELIMINARY RESULTS.

Descriptive Note : Technical rept.,

Corporate Author : PURDUE UNIV LAFAYETTE IND SCHOOL OF CIVIL ENGINEERING

Personal Author(s) : Judd,Wm. R.

Report Date : DEC 1969

Pagination or Media Count : 114

Abstract : The collection and collation of physico-mechanical properties of rock is systematized to permit computer analysis of large quantities of such data. The main objectives of the computer codes presented here are to permit rapid retrieval of specific properties of specific rock types and to determine if two or more different rock properties can be correlated by statistical methods. Initial linear regression analyses were performed on pairs of properties, where one property was a measurement of the velocity of propagation of a longitudinal or transverse wave through a specimen or a rock system (in situ). These analyses indicate that when wave velocity is compared to impact toughness, static modulus of deformation, static modulus of rupture, unconfined compressive strength, or Young's modulus of elasticity (determined by static loading), each such pair of comparisons has a correlation coefficient greater than 0.70. It also was found that there was a 0.80 correlation coefficient between measurements of longitudinal wave velocities in laboratory specimens and in rock masses in the field. (Author)

Descriptors :   (*ROCK, STRUCTURAL PROPERTIES), (*DATA PROCESSING, ROCK), STATISTICAL ANALYSIS, UNDERGROUND STRUCTURES, STRAIN(MECHANICS), COMPUTER PROGRAMMING, EARTHQUAKES, CONSTRUCTION, UNDERGROUND EXPLOSIONS, NUCLEAR EXPLOSIONS

Subject Categories : Geology, Geochemistry and Mineralogy
      Civil Engineering
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE