平顶山十二矿“采-选-充”一体化集成关键技术研究

发布时间：2018-11-25 13:51

【摘要】：采用传统的全部垮落法管理顶板,大规模开采后带来的包括地表沉陷、矸石排放等在内各种生态环境问题日益突出,此外随着煤炭资源的大量开采,越来越多的矿井涉及到开采“三下”(建筑物下、铁路下、水体下)压煤问题。近年来,由中国矿业大学自主研发的综合机械化固体充填采煤技术已成功解决上述问题并取得了良好的经济社会效益。但井下原煤混矸仍需提升至地面经洗选后由投料井运送至充填工作面。鉴于此,本论文提出煤矿井下采选充采一体化生产模式,文中采用理论分析、数值模拟、工业性实验等研究方法,阐述了煤矿井下采选充采一体技术内涵,研究了采选充采一体化生产技术的系统布置和工艺设计、分析了其关键技术设备的选型设计原则及其设备结构和性能。取得主要研究成果如下:(1)揭示了煤矿井下采选充采一体化技术内涵,形成完善的煤矿井下采选充采一体化系统,建立井下采选充采一体化生产模式,为井下采选充采一体化技术的实施与发展提供依据。(2)建立了井下采煤系统、分选系统和充填系统之间的生产能力合理配套关系,分析了影响三大系统能力的关键因素,优化得到了井下采选充采一体化关键技术参数。(3)从模拟结果来看,支撑结构可以显著改变周围岩石应力分布。在支撑结构中,周围岩石的应力集中范围较小,位移分布略有变化,为160mm,巷帮移动距离接近81mm,模拟结果表明,增加硐室的支护可大大提高硐室内围岩的稳定性保证巷道的质量。(4)解决煤流矸石地面排放造成的环境污染问题,实现了井下煤矸有效分选及分选矸石输送通道、充填空间和充填设备与综采工作面的衔接,煤流矸石直接经井下洗选系统洗选后进行采空区充填,解决矸石地面排放造成的环境污染与破坏的问题,缓解了埋深超千米矿井辅助运输压力,节约辅助运输成本,实现井下采选充采一体化各生产系统的有序、高效、安全生产。
[Abstract]:Adopting the traditional all collapse method to manage the roof, after large-scale mining, all kinds of ecological and environmental problems, including surface subsidence, gangue discharge and so on, are becoming more and more prominent. In addition, with the large-scale mining of coal resources, More and more mines are involved in coal mining under buildings, railways and water bodies. In recent years, the comprehensive mechanized solid filling mining technology developed by China University of Mining and Technology has successfully solved the above problems and achieved good economic and social benefits. But the gangue still needs to be transported from feeding well to filling face after washing. In view of this, this paper puts forward the integrated production mode of coal mine, mining, charging and mining. In this paper, theoretical analysis, numerical simulation, industrial experiment and other research methods are used to explain the technical connotation of coal mine mining, charging and mining integration. The system layout and process design of the integrated production technology of mining, charging and mining are studied, and the selection and design principles of the key technology and equipment, the structure and performance of the equipment are analyzed. The main research results are as follows: (1) it reveals the technical connotation of the integration of mining, charging and mining in coal mines, forms a perfect integrated system of mining, charging and mining in coal mines, and establishes the integrated production mode of underground mining, separation, charge and production. It provides the basis for the implementation and development of the integrated technology of underground mining, separation and production. (2) the production capacity of the underground coal mining system, the separation system and the filling system are established, and the key factors affecting the capability of the three systems are analyzed. The key technical parameters are obtained by optimization. (3) from the simulation results, the stress distribution of surrounding rock can be significantly changed by supporting structure. In the supporting structure, the stress concentration range of surrounding rock is smaller, the displacement distribution is slightly changed, is 160 mm, and the distance of roadway movement is close to 81 mm. The simulation results show that, The stability of surrounding rock in the chamber can be improved greatly to ensure the quality of roadway. (4) the problem of environmental pollution caused by the ground discharge of coal gangue is solved, and the effective separation of coal and gangue and the conveying channel of gangue are realized. When filling space and filling equipment are connected with fully mechanized coal face, coal flow gangue is filled in goaf directly through downhole washing system to solve the problem of environmental pollution and destruction caused by surface discharge of gangue. It alleviates the pressure of auxiliary transportation, saves the cost of auxiliary transportation and realizes the orderly, efficient and safe production of the integrated production system of underground mining, selection, charging and mining.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD823;TD94

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