云南大红山铁矿Ⅰ~#铜矿带深部回采工艺优化
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摘要
调查分析了大红山铁矿Ⅰ~#铜矿带矿岩强度、构造弱面及矿岩稳定性情况。针对目前该矿采用的点柱式上向分层充填法的多个生产环节均需在空场下作业的现状,对Ⅰ~#铜矿带深部回采工艺进行了优化,即矿体厚大部分(厚度大于7 m)采用分段空场嗣后尾砂充填法开采;厚度中等矿体(厚度为4～7 m)采用点柱式上向分层充填法开采;矿体较薄部分(厚度小于4 m)采用条带式回采工艺,并适当降低采场跨度。上述工艺的应用,有助于确保该矿带安全开采,提高开采效率。
The rocks strength,structural weak surface and stability of rock and orebody of No. Ⅰcopper belt of Dahongshan Iron Mine is investigated. In view of the present situation that many production links of the point column upward stratified filling method in the mine need to be operated in empty field,the deep mining method of No. Ⅰ copper belt of the mine is optimized as: for the thicker orebody( thickness is greater than 7 m),sublevel open stoping and subsequent tailings filling method is the optimal mining method; for the medium thickness orebody( thickness is 4 ～ 7 m),the point column upward stratified filling method is the optimal mining method; for the thinner orebody( thickness is lower than 4 m),strip mining technique is the best mining method,besides that,the stope span should be reduced. The applicaiton of the above otpimized mining methods is help for ensuring the safety mining of the mine and improving the mining efficiency of the mine.
The rocks strength,structural weak surface and stability of rock and orebody of No. Ⅰcopper belt of Dahongshan Iron Mine is investigated. In view of the present situation that many production links of the point column upward stratified filling method in the mine need to be operated in empty field,the deep mining method of No. Ⅰ copper belt of the mine is optimized as: for the thicker orebody( thickness is greater than 7 m),sublevel open stoping and subsequent tailings filling method is the optimal mining method; for the medium thickness orebody( thickness is 4 ～ 7 m),the point column upward stratified filling method is the optimal mining method; for the thinner orebody( thickness is lower than 4 m),strip mining technique is the best mining method,besides that,the stope span should be reduced. The applicaiton of the above otpimized mining methods is help for ensuring the safety mining of the mine and improving the mining efficiency of the mine.
引文
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[2]蔡美峰.岩石力学与工程[M].北京:科学出版社,2002.
[3]赵文.岩石力学[M].长沙:中南大学出版社,2010.
[4]余南中.大红山铜矿西部矿段低品位难采矿体的开发[J].中国矿业,2010(S):256-260.
[5]孙宏生.大红山铜矿二期采矿工艺及点柱的应用[J].地下空间与工程学报,2016,12(2):516-520.