ABSTRACT
With the development of the Belt and Road construction project, the contradictory situation of different specifications put forward a serious examination of the construction. This paper is based on the principle of volumetric joint equivalence, the empirical formula of volumetric joint coefficient expressed by integrity coefficient (K V ) and rock quality index (RQD) was used, and the relationship between K V and RQD was deduced. Based on the principle of equivalent uniaxial compressive strength, rock firmness coefficient (f) and rock mass basic quality index (BQ) respectively are used to represent the rock uniaxial compressive strength of empirical formula, the relationship between BQ and f suggested in this paper is obtained, and the corresponding table of the relationship between F Methods and BQ Methods is established. The research results have been successfully applied in the scheme modification and optimization design of the south-north trans-ridge tunnel in Kyrgyzstan, which provides a reference for tunnel construction in countries along the “Belt and Road”.
