摘要
嵩县山金北翼矿体走向长度短、平均厚度薄、矿体倾角小、地质品位低、岩石稳固性较差,采用盘区机械化上向水平分层进路充填采矿法开采,采切工程投入大,成本费用高,安全投入及风险更大。针对该类矿体,提出了一种脉内无固废精准开采采矿方法,通过构筑人工假巷形成运输条件,人工架设钢溜井形成行人、放矿、通风、泄水条件,采矿工作完成后通过脉内悬吊1 m^(3)铲运机完成机械化出矿及设备换层工作,采用分层充填采矿法充填采空区,提高回采效率。与原采矿方法进行技术经济对比,采用脉内无固废精准开采采矿方法经济效益更好,不需要布置分段巷、采场联巷等掘进工程,在工程投入方面可节约23.2万元,不产生掘进废石,实现了脉内无固废开采的目的。现场试验结果表明:该开采方法具有开采精度高、采(出)矿效率高、采矿损失贫化低、安全投入小、经济效益高等优点,推广前景较大。
Since the north wing ore bodies in Songxian Shanjin strikes short,has narrow average thickness,small ore body dip angle,low geologic grade and poor rock stablity,besides higher safety investment and risks,it costs much and requires huge investment for mining and cutting engineering to use panel upward horizontal slicing and filling mining method.For this kind of ore bodies,the paper put forward an in-vein solid waste free targeted mining method,which builds artificial roadways to facilitate transportation,manually sets up steel pass to facilitate traffic,ore drawing,ventilation and drainage.When mining is finished,mechanized ore drawing and equipment shifting are conducted through in-vein suspending of 1 m^(3) scooptram.Layered filling mining method is used for filling to improve mining efficiency.Technical and economic comparison are carried out against the precious mining method.The result turns out that in-vein solid waste free targeted mining method is better in economic benefits,saves the construction of excavation projects such as section roadways and stope connection roadways as well as the engineering cost by 232 thousand yuan,generates no waste rocks from excavation and meets the goal of in-vein solid waste free mining.The field test results show that the mining method is precise in mining,high in mining efficiency,low in mining dilution and loss,small in safety investment,and profitable in economy,promising in promotion.
作者
王元民
由松江
刘吉兴
马章印
齐兆军
彭康
于曙华
Wang Yuanmin;You Songjiang;Liu Jixing;Ma Zhangyin;Qi Zhaojun;Peng Kang;Yu Shuhua(Songxian Shanjin Mining Co.,Ltd.;Shandong Gold Mining Technology Co.,Ltd.;Shandong Gold Mining Co.,Ltd.;School of Resources and Safety Engineering,Central South University)
出处
《黄金》
CAS
2022年第4期45-48,共4页
Gold
基金
国家自然科学基金项目(51974043)。
关键词
脉内无固废精准开采
分层充填
人工假巷
经济效益
机械化
in-vein solid waste free targeted mining
layered filling
artificial roadway
economic profits
mechanization
