Improve the multi-jointed fractured rock blasting ore quality of Shandong Gold Group Sanshandao new legislation gold mining area (261,400) Abstract: According to positions on the Open Pit mining area of the actual situation, from the theory and practice of seven, a number of joint fractured rock mine blasting a retaining wall, the island, root, large pieces of reasons, and the corresponding solution Approach, similar to mine is of universal significance, and will be obvious economic benefits. Key words: more joint fractured rock mine blast wall root large island