|
Abstract The method to obtain the rock mass mechanical parameters is critically important in geotechnical engineering. Thus in-situ test technology is basically employed to overcome the defects of disturbance and size effect in laboratory tests when determining mechanical parameters of rock mass. Recently，the borehole shear test(BST) is used extensively in soil direct shear tests，but the application for rock mass is rarely reported. Since the rock borehole shear test(RBST) equipment was introduced by China Institute of Water Resources and Hydropower Research in 2009，some in-situ test results have been obtained in geotechnical engineering sites. To overcome defects of RBST in engineering application，the technology of in-situ borehole test is improved. And the rock borehole shear-compress test equipment has been developed. By the new test system，the mechanical and deformation parameters of rock mass can be obtained simultaneously，which will provide a new way for determining the rock mass mechanical parameters in geotechnical engineering.
|
|
Received: 11 January 2013
|
|
|
|
2013, Vol. 32 
