Sonic Wave Testing Technique in Lamellar Rock Mass

Sonic wave testing technique is the most commonly used one for ascertaining the loosening zone of roadway surrounding rock, but it has a great limitation in lamellar rock mass. For overcoming the limitation, the problems of sonic wave testing boreholes arrangement mode were studied. Firstly, the theoretical bases of the testing boreholes arrangement in inclined lamellar rock mass were analyzed on the basis of the mechanical characteristics and the propagation rule of sonic wave in layered rock mass. Secondly, three principles of sonic wave testing boreholes arrangement were summarized from numerous testing experiences on field. Then, new arrangement modes in four representative lamellar rock mass (dip angle was respectively 0°, 15°, 45° and 90°) were proposed. The testing results from the engineering example with the gently inclined lamellar rock mass showed the improved arrangement mode could determine the scope of the loosening zone quickly.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 57-63
  • Monograph Title: Soils and Rock Instrumentation, Behavior, and Modeling: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01142776
  • Record Type: Publication
  • ISBN: 9780784410462
  • Files: TRIS
  • Created Date: Oct 26 2009 9:34AM