Selection of an Appropriate Quarrying Technology for Dimension Stone Quarries Using Combined Multi - Criteria Decision - making Method, Case Study at Hoa Quang Bac Quarry

Nowadays, unselected quarrying technologies for dimension stone quarries, including manual and traditional technologies to modern technologies, have been applied in the whole nation. These technologies include blasting with detonation fuse , blasting with explosive , splitting wedge , diamond wire sawing, disc sawing, diamond wire sawing combined with splitting wedge and disc sawing combined with diamond wire sawing and splitting wedge. Due to characteristics of each technology, there exist different quarrying cost, consumed time, safety, environment and stone loss . Therefore, it is difficult for the quarries to select the most suitable one of the technologies. Basing on the comprehensive assessment of the criterion above to select the most proper technology for each dimension stone quarry, the paper used multi - criteria decision – making method combining between Analytic Hierarchy Process (AHP) for selecting criteria weigh and multi - criteria ranking method Promethee II for ranking the technologies. The study was applied to Hoa Quang Bac quarry and technology combining disc sawing and diamond wire sawing was choosen as the most appropriate technology for mine.