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矿用可移动式救生舱爆炸载荷下的结构强度研究

发布时间:2019-06-24 18:33
【摘要】:目前,我国的能源消费以煤炭为主,其产量占世界总产量的40%。随着煤炭开采量的逐年增多,煤矿安全问题显得尤为突出,特大事故频发,造成了大量人员伤亡。因此,对煤矿安全的深入研究和有效防范已迫在眉睫。 紧急避险设施——作为最有效的煤矿安全设备,在减少人员伤亡事故中起到了关键作用。其中可移动式救生舱是应用最为广泛的,不论在保护井下遇险人员的生命安全方面,还是抵御外界瓦斯爆炸、坍塌等灾害的破坏方面都起着十分重要的作用。 本文主要研究矿用可移动式救生舱在瓦斯爆炸载荷下的结构强度。首先,以煤矿中常用的KJYF96/8型矿用可移动式救生舱为基准模型,运用SolidWorks软件建立救生舱的三维实体模型。 其次,选取国内煤矿常用的直墙拱形巷道,采用ANSYS/LS-DYNA有限元软件对瓦斯爆炸过程进行模拟计算,获得瓦斯爆炸冲击波在巷道内的传播规律。 再次,本文采用有限元模拟仿真方法,基于瓦斯爆炸冲击波在巷道内的传播规律,,运用ANSYS/LS-DYNA有限元软件对基准模型KJYF96/8型矿用可移动式救生舱进行了瓦斯爆炸载荷下的仿真计算,并对救生舱结构应力、位移计算结果进行分析,评价了该救生舱的可靠性。 最后改变基准模型KJYF96/8型矿用可移动式救生舱的结构参数,分别对其进行有限元模拟仿真。分析救生舱的应力、位移随其纵筋间距、环筋数量和加强筋型号改变的变化规律,为KJYF96/8型号矿用可移动式救生舱的结构改进提出合理化建议。
[Abstract]:At present, China's energy consumption is mainly coal, its output accounts for 40% of the world's total output. With the increase of coal mining volume year by year, the problem of coal mine safety is particularly prominent, and serious accidents occur frequently, resulting in a large number of casualties. Therefore, the in-depth study and effective prevention of coal mine safety is urgent. Emergency shelter, as the most effective coal mine safety equipment, plays a key role in reducing casualties. Among them, movable lifebuoy is the most widely used, which plays a very important role in protecting the lives of people in distress, or in resisting the damage of external gas explosion, collapse and other disasters. In this paper, the structural strength of mine movable lifebuoy under gas explosion load is studied. Firstly, based on the KJYF96/ 8 movable lifebuoy commonly used in coal mines, the three-dimensional solid model of the lifebuoy is established by using SolidWorks software. Secondly, the straight wall arch roadway commonly used in domestic coal mines is selected, and the gas explosion process is simulated by ANSYS/LS-DYNA finite element software, and the propagation law of gas explosion shock wave in the roadway is obtained. Thirdly, based on the propagation law of gas explosion shock wave in roadway, this paper uses ANSYS/LS-DYNA finite element software to simulate and calculate the reference model KJYF96/ 8 mine movable lifecabin under gas explosion load, and analyzes the calculation results of stress and displacement of lifecabin structure, and evaluates the reliability of the lifecabin. Finally, the structural parameters of the reference model KJYF96/ 8 mine movable lifebuoy are changed, and the finite element simulation is carried out respectively. This paper analyzes the variation of stress and displacement of lifebuoy with the change of longitudinal reinforcement spacing, the number of ring tendons and the type of reinforcement, and puts forward some reasonable suggestions for the improvement of the structure of movable lifebuoy of KJYF96/8 model.
【学位授予单位】:沈阳航空航天大学
【学位级别】:硕士
【学位授予年份】:2013
【分类号】:TD774

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