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矿区为多金属的硫化矿薄矿床,矿脉厚度为0.1～0.5米,傾角为70～85°,围岩为扁豆灰岩(f=10—12)及灰質頁岩(r=6—10)。矿石具有氧化性,不論矿石或围岩,都非常容易結块。当使用普通留矿法开采时,矿石損失大,並影响其他作业进行,特別是对安全生产的威胁更大,有时甚至被迫停止作业。为了克服上述缺点,曾使用过横撑支柱开采及分层留矿法,作业的安全性大大增加,但矿石结块现象仍很严重,加以分层留矿法的結构及回采工艺过程目前尚欠完善。因此,一方面需要尋求进一步完善分层留矿法的新方案,以便开采一些結块性不甚严重及地貿条件特殊的矿脉。但对于大部份的采场及矿脉,使用普通留矿法开采仍然是今后的主要方向。因此,应該詳細观察及分析結块产生的原因,找出解决的办法,克
The deposit is a polymetallic sulphide ore deposit with thickness of 0.1-0.5 m and dip angle of 70-85 °. The surrounding rock is lentil limestone (f = 10-12) and gray shale (r = 6-10). Ore is oxidative, regardless of ore or rock, are very easy to agglomerate. When mining using the conventional retention method, the loss of ore is large and affects other operations. In particular, there is a greater threat to work safety and sometimes it is even forced to stop working. In order to overcome the above shortcomings, the use of cross-strut mining and stratified mining method, the safety of operations greatly increased, but the ore agglomeration is still very serious, to be stratified retention of the structure and mining process is still owed perfect. Therefore, on the one hand, there is a need to find new ways to further improve the stratified deposit law in order to mine some non-agglomeration veins with special conditions for trade and trade. However, for the majority of stopes and veins, mining using the conventional retention method is still the main direction in the future. Therefore, we should observe and analyze in detail the causes of agglomeration and find solutions to the problem