关键词: 海底开采, 机械化上向水平分层充填法, 细粒级全尾砂海底充填工艺

Abstract: Xinli mining area of Sanshandao gold deposit is the first hard rock mine which belongs to the under-sea deposit in our country,and only Longkou is mining coal under sea in domestic.The orebody in Sanshandao mining area is located in the range of several decameter to several hectometre below the seabed.It is full meaningful submarine mining.And the cut-and-fill method is an optimum mining method.Through research on the commenting performance of filling tailings with different concentration and different comment-sand ratio,it is determined that the whole tailings upward flat-back cut-and-fill stoping method is adopted with comment-sand ratio of 1∶〖KG-*2〗8 in filling and 1∶〖KG-*2〗4 in commenting surface at a filling concentration of about 70%.It provides a technical support for the safety and high efficiency mining of Xinli mining area of Sanshandao gold deposit in the undersea mining.

Key words: Undersea mining, Mechanized upward flat-back cut-and-fill stoping method, Fine whole tailings filling technology in undersea