Dear Ekeocha,

I am attached here a paper link which is useful for your research work.

All the best

http://www.sciencedirect.com/science/article/pii/S1674775514000353

Dear Colleague,

The slope instability is related to the orientation parameter of rock slopes and joints which is one of components of intrinsic joint characteristics of rock mass strength. In the following paper, the orientation parameter in presence of clayey gouge is listed in Table 6. Among open slopes, there is significant potential for dilation and damage. The decreasing orientation increases the modified joint factor which further increases in the presence of water pressure. There exists a negative exponential relation of strength and stability of rock masses with dilation and damage parameters considered along with modified joint factor (say in relation to the orientation of slope as shown by Eq. 38-40).

Please look at the open access paper at

http://www.sciencedirect.com/science/article/pii/S1674775515000888

Thanks Kundan and Trivedi for your response and for the attached papers.