|
Abstract How to obtain the actual and reliable shear strength parameters of rock structural plane is the essential precondition for studying the strength of whole rock mass. The characteristics of one structural plane sample are quite different from those of another structural plane；and the mechanical tests also can?t be repeated easily. So it is very hard to obtain the reliable shear strength parameters only by mechanical test directly，or the test results are not available. Taking the rock structural plane samples with oriented deformation character for objective，a new method，which combines shear tests on rock structural planes，three-dimensional spatial analysis of rock discontinuities morphology and numerical simulation，was put forward. It was proved to be effective in obtaining actual and reliable shear strength parameters of structural plane. The advantages of this method can be described as follows：For rock structural plane，the two parts of friction angle，i.e. basic friction angle and climbing angle，can be separated completely；and three-dimensional morphology characteristic and shear deformation direction can be considered. Meanwhile，the combination of mechanical test and numerical test can solve the question that the shear mechanical test can?t be repeated.
|
|
Received: 12 January 2012
|
|
|
|
2012, Vol. 31 
