April 2013

Instrumentation for in-situ foundation investigation in Lagos, South West (SW) Nigeria

  In areas underlain by stratified rocks, it is difficult to obtain undisturbed samples at depth for satisfactory geotechnical results when analysed in the laboratory. Considering the complexity of its subsurface geology, a study on in-situ geotechnical exploration tool for foundation investigation in Lagos was conducted. Layer apparent resistivity (ra) was measured with ABEM SAS 300 Terrameter using...

Author(s): Adebisi N. O. and Fatoba J. O.

April 2013

Tunnels stability analysis using binary and multinomial logistic regression (LR)

  One of the most serious problems in tunneling projects are falling rock blocks. By considering this fact, the importance of stability predicting using some input parameters can be obviously understood. Among the existing rock mass classification systems for underground structures, rock mass rating (RMR) and Q are probably the most widely used ones this is rather unlikely to change, at least in the near...

Author(s): R. Rafiee, M. Ataei and M. Kamali