Study on evaluation of deformation modulus of no clay weak interbed

Through analysis,it is known that main factors to control deformation modulus of no clay weak interbed are its material composition and geological environment (geostress).Based on a lot of test results,we have established the correlations between deformation modulus and different controlling factors,and revealed the variation rule of deformation parameter.We finally obtain the method to evaluate deformation modulus of no clay weak interbeds of different types in different regions.