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作 者:吕文伟 LYU Wenwei(Ha'erwusu Open-pit Coal Mine,China Energy Group Zhunge'er Energy Co.,Ltd.,Ordos 010300,China)
机构地区:[1]国能准能集团有限责任公司哈尔乌素露天煤矿,内蒙古鄂尔多斯010300
出 处:《露天采矿技术》2023年第5期10-13,共4页Opencast Mining Technology
摘 要:为了明确爆破工程产生大块的影响因素以及大块和台阶稳定性之间的相互关系;基于层次分析法基本原理,分析了岩石坚固性系数、炸药单耗等参数对大块产生的影响权重;构建大块赋存于边坡坡顶、坡中、坡底的单台阶数值模型,计算了边坡稳定性系数。结果表明:炸药单耗和完整性系数是大块产生的主要控制因素;赋存于台阶顶部、坡面的大块会对稳定性造成不利影响,赋存于底部的大块有利于台阶稳定。In order to clarify the influence factors of blasting engineering block and the relationship between block and step stability,based on the basic principle of analytic hierarchy process,the article analyzes the influence weights of rock solidity coefficient,explosive unit consumption and other parameters on the block,constructs a single-step numerical model of large blocks in the top,middle and bottom of the slope,calculates the slope stability coefficient.The results show that explosive unit consumption and integrity coefficient are the main control factors of bulk production.The block at the top of the steps and the slope will have adverse effects on the stability,the large block at the bottom is conducive to the stability of the steps.
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