眼前山铁矿矿岩分区可崩性评价研究

Study on cavability evaluation of the subdivisions in Yanqianshan iron mine

矿岩的可崩性是影响自然崩落法成功应用的关键因素,在眼前山铁矿进行开采技术条件研究成果基础上,分析不同区域的节理裂隙条件与特征,分别采用RQD指标法、RMR岩体质量法等矿岩质量评价法对眼前山铁矿进行分区矿岩可崩性评价研究,确定了不同区域矿岩的可崩性级别,为自然崩落法设计提供了依据。

Orebody cavability is the key factor supporting the successful application of block caving,based on the research result of Yanqianshan iron mine mining conditions,the characteristics of the joint fractures in different regions are analyzed and rock mass evaluating methods such as RQD method and RMR system are used to research the cavability of the subdivision of Yanqianshan iron mine ore,based on the study of orebody cavability,the cavability level of the ore in different regions is determined and efficient design basis is provided to block caving method.