典型急倾斜薄矿脉浅孔回采工艺优化.pdfVIP免费

第７５卷第５期有色金属(矿山部分)２０２３年９月􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉􀪉doi:１０􀆰３９６９/j􀆰issn􀆰１６７１Ｇ４１７２􀆰２０２３􀆰０５􀆰００４典型急倾斜薄矿脉浅孔回采工艺优化张庆旭１,刘东锐２,３,李士超２,３(１．广西桂华成有限责任公司,广西贺州５４２８００;２．长沙矿山研究院有限责任公司,长沙４１００１２;３．国家金属采矿工程技术研究中心,长沙４１００１２)摘要:浅孔留矿法适用于急倾斜薄至中厚矿体的回采,具有开采成本低、工艺简单等特点,但也存在安全风险高、人员长期在暴露顶板下作业等问题.珊瑚矿矿体属于典型的急倾斜薄矿体,在使用浅孔回采过程中,存在爆破块度大、采场结构参数不合理、顶板稳固性差等问题.通过理论分析、工程类比等方法及手段,优化采场结构参数、凿岩爆破工艺、支护工艺以及出矿设备,现场试验表明,优化后各项技术经济指标均得到较大的提升,为类似矿山提供良好的工程实践及理论基础.关键词:浅孔留矿;回采工艺;支护工艺;爆破工艺;优化研究;现场应用中图分类号:TD８５３文献标志码:A文章编号:１６７１Ｇ４１７２(２０２３)０５Ｇ００２２Ｇ０５OptimizationofshallowholestopingtechnologyintypicalsteepthinveinsZHANGQingxu１,LIUDongrui２,３,LIShichao２,３(１􀆰GuangxiGuihuachengCo􀆰,Ltd􀆰,HezhouGuangxi５４２８００,China;２．ChangshaMiningResearchInstituteCo􀆰,Ltd􀆰,Changsha４１００１２,China;３．NationalMetalMiningEngineeringTechnologyResearchCenter,Changsha４１００１２,China)Abstract:ShallowＧholeShrinkagestopingissuitablefortheminingofsteeplyＧinclinedthintomediumＧthickorebody．Ithasthecharacteristicsoflowminingcostandsimpletechnology,butitalsohassomeproblems,suchashighsafetyrisk,andpersonnelworkingunderexposedroofsforalongtime．Shanhuoreisatypicalsteepthinorebody．Intheprocessofshallowholeextraction,therearesomeproblems,suchaslargeblastingblocks,unreasonablestopestructuralparameters,andpoorroofstability．Throughtheoreticalanalysis,engineeringanalogy,andothermethodsandmeans,thestopestructuralparameters,drillingandblastingtechnology,supporttechnology,andminingequipmentareoptimized．Varioustechnicalandeconomicindicatorshavebeengreatly...