诱导破岩采矿关键技术问题探讨

发布时间：2019-01-21 06:44

【摘要】：介绍了诱导破岩采矿的应用现状,分析了诱导破岩的机理和可冒性评估方法,提出将拉底等工程指标量化后引入可冒性评估方法的完善方案。按照诱导力的来源将诱导破岩分为内力诱导和外力诱导,提出调控采动应力诱导破岩矿块布置结构。指出诱导条件下矿岩冒落响应规律和冒落块度是诱导破岩理论研究的核心问题,分析拉底参数、辅助诱导工程、放矿控制等因素对冒落响应规律和冒落块度的影响机制,提出离散元和有限元软件耦合模拟、利用辅助诱导工程监测的冒落响应规律和冒落块度研究方法。对完善诱导破岩理论,提高诱导破岩法的认知度,指导工程应用具有重要意义。
[Abstract]:This paper introduces the application status of induced rock breaking mining, analyzes on the mechanism of induced rock breaking and the method of risk assessment, and puts forward a perfect scheme of introducing the method of risk assessment after quantifying the engineering indexes such as drawing bottom. According to the source of induced force, induced rock breaking can be divided into internal force induction and external force induction. It is pointed out that the law of caving response and the degree of caving block are the core problems in the theoretical study of induced rock breakage under induced conditions. The mechanism of influencing factors such as bottom drawing parameters, auxiliary inducement engineering and ore drawing control on the caving response law and the size of caving is analyzed. The coupling simulation of discrete element and finite element software is presented. The law of falling response and the study method of falling block degree are used in the aided induced engineering monitoring. It is of great significance to perfect the theory of induced rock breaking, to improve the recognition of induced rock breaking method and to guide the engineering application.
【作者单位】：东北大学资源与土木工程学院;
【基金】：国家自然科学基金重点基金项目(编号:51534003) 国家重点研发计划项目(编号:2016YFC0801604) 中央高校基本科研业务费专项(编号:N150104006) 辽宁省自然科学基金面上项目(编号:20170540327)
【分类号】：TD853

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