【作者】 陈树召；

【导师】 才庆祥；

【作者基本信息】 中国矿业大学 ， 采矿工程， 2011， 博士

【摘要】 本文从我国大型露天煤矿应用他移式破碎站半连续工艺的需要出发,综合运用露天采矿学原理、采矿系统工程、技术经济学和计算机技术等方法,通过调查研究、理论分析和现场工程实践,对露天矿破碎设备选择与结构优化、布置与移设及剥离半连续工艺的应用等内容展开深入研究。论文在总结前人研究成果的基础上,首先对破碎站的分类和各种形式破碎站的概念进行了梳理,以露天矿效益最大化为目标建立了破碎设备二级综合优选模型,并根据剥离半连续工艺应用需要分析了适用于高含水率、易粘结物料的破碎机类型。论文提出了破碎站模块化的观点,以提高设备的布置灵活性、可靠性和国产化率,改善作业环境;并在此基础上建立了受料仓结构参数优化模型。论文借鉴单斗—卡车工艺车铲匹配研究成果,分析了他移式破碎站半连续工艺下卡车运输的特点,以系统生产成本最低为目标建立了卡车优化模型。根据他移式破碎站布置于露天矿采场内的特点,论文分析了影响破碎站布置的因素,建立了破碎站位置优化模型与移设优化模型;并通过引入运距增加系数k考虑了下部台阶半连续工艺系统布置对上部台阶运输的影响。根据露天矿剥离应用半连续工艺的需要和他移式破碎站的特点,建立了露天矿半连续工艺服务范围模型、组合台阶开采模型和采掘带宽度优化模型,为剥离半连续工艺系统服务范围和开采参数的确定提供了依据。为适应山坡排土场条件下剥离半连续工艺应用的需要,分析了间断—连续—间断型半连续工艺的环节构成、适用范围和经济效益;为提高露天矿现有带式输送机运输系统的能力利用率,提出了轮斗挖掘机与破碎站共用一套运输系统的联合工艺,并对4种布置方式进行了对比分析。论文通过实例研究对所建立模型的实用性进行了验证,研究成果对于丰富我国半连续工艺理论和建设大型高效低碳露天煤矿具有积极意义。更多还原

【Abstract】 Based on the need of mobile crusher semi-continuous mining system application in large open pit mines, this dissertation comprehensively applies surface mining theories, mining engineering system theories, technology economics theories, as well as computer technology. Through investigation researches, theoretical analysis and spot engineering practice, we research on crushing equipment selection, structure optimization, determination of crusher locations and shifting distance, as well as the application of stripping semi-continuous technology system.Based on the results of previous studies, we summarize the classification of crusher and the concepts of all kinds crushers in this dissertation. With the aim of open pit profit maximization, this study established a two-grade crusher comprehensive optimization model. In addition, according to the needs of stripping semi-continuous technology system used in open pit coal mine, the crushing characteristics and suitable crusher type of the high moisture content and easily bond material are analyzed. This dissertation present a view of modular crusher station as well as to improve the flexibility, reliability, and local production ratio of the crusher station, and to improve the working environment. Based on these, we established the parameter optimization model of feed hopper structure. This dissertation shows the previous research results on truck-shovel match of shovel truck discontinuance technology system, and analyzes the characteristic of truck transport under mobile crusher station semi-continuous mining system. Targeting the lowest system production cost we establish the optimization model of truck type. According to the characteristics of mobile crusher locate in pit, this dissertation analyzes the affect factors and establishs the optimization model of crusher station location optimization model and shifting distance optimization model. We also introduce the transport distance increase coefficient k into the optimization model to embody the influence of belt conveyor transport system of the lower level to the internal dumping distance of upper levels.According to the need of stripping semi-continuous technology system application and the characteristics of mobile crusher, we establish service areas model of open pits semi-continuous mining system, group bench mining model and strip width optimization model in this dissertation. These models provide the basis for service areas and mining parameters determination of stripping semi-continuous technology system. In order to meet the needs of stripping semi-continuous technology system application with mountain slope dumping area, system characteristics, link structure, application conditions and economic efficiency of discontinuous - continuous - discontinuous form semi-continuous technology system was analyzed in this dissertation. In order to improve the belt conveyer efficiency, we presented combined system that crusher and bucket wheel excavator use the same transport system, and four kinds crusher station location have been compared.We verify the practicality of models established in this dissertation through case studies. The research results have a positive significance for enriching the semi-continuous technology system theory and constructing the large efficient low-carbon open pits.更多还原