深井难采矿体开采与通风控制技术研究

深井矿山开采面临埋深大、原岩应力高、地温高及岩爆倾向性强等问题,尤其在深部缓倾斜中厚难采矿体中,深部矿体开采和通风问题都是亟待解决的问题。针对冬瓜山铜矿西翼矿体兼有深井矿山和缓倾斜中厚难采矿体的特点,设计采取"大盘区、小分段"的设计思路,采用两步骤回采的分段空场嗣后充填法,很好地解决了采场高地应力和落矿重力运搬等问题;同时根据"按需通风"的供风原理,以采场需风为核心,对进风—采场—回风系统进行优化和仿真,较好地解决了冬瓜山铜矿采场通风困难问题,研究表明,该采矿方案具有很好的实用性和推广性。

Research of mining method and ventilation control for difficult-to-mine ore bodies in Deep mine

There are many problems for deep mining, such as deep burial, high in-situ stress, high ground temperature and rock burst proneness, and especially in the deep gently inclined medium thick difficult-to-mine complex orebody, deep mining and ventilation problems are urgent problems need to be solved.As to West wing orebody of Dongguashan copper mine,which has the above characteristics , it is hard to conquer these difficulties using traditional mining method, such as high in-situ stress, removal of mined ore by gravity and ventilation for blasting stope etc. The theory of "large panel, lower sublevel height and ventilation on demand" will be easy to solve such problems. This paper use numerical and simulation technology to analyze selected mining method and its structure. The selected method is feasible and well worth spread.