煤矿井下安全舱结构强度计算
发布时间：2019-04-12 18:11
【摘要】：作为一个产煤大国和一个煤炭消费大国，煤炭一直占据着我国能源结构中的核心位置。随着能源需求的日益增大，煤炭开采量也节节攀升，而随之相伴的安全问题也越来越突出，频繁发生的矿井事故，导致大量人员受伤遇难。由于地下岩层的复杂性，矿井事故不能够完全避免。因此，建立煤矿井下避难场所，保证矿井发生事故后被困井下的工作人员的生命安全显得尤为重要。 本文介绍了一种组装式可移动救生舱，利用机械设计软件SolidWorks建立救生舱的实体模型，，利用数值模拟软件对救生舱的结构系统进行强度分析，包括静力学分析和动载荷分析。 在矿井发生坍塌、透水等事故时，救生舱所处的环境可以看做是压力容器的一种形式，所以在静载荷分析时，在救生舱表面施加的是均布压力。为了提高救生舱整体的力学性能，采用了加强救生舱受力结构和加装蜂窝结构两种方法，分析并比较了这两种方法在改善救生舱整体的强度和刚度方面不同的作用。在动载荷的计算时，由于计算工作量较大以及硬件条件的限制，采用的是预先建立了一个压力——时间曲线，以均布面力的形式模拟爆炸产生的冲击波加载到救生舱的表面。
[Abstract]:As a big coal-producing country and a big coal-consuming country, coal has always occupied the core position in the energy structure of our country. With the increasing demand for energy, the amount of coal mining is also rising, and the accompanying safety problems become more and more prominent, frequent mine accidents, resulting in a large number of people injured and killed. Due to the complexity of underground strata, mine accidents can not be completely avoided. Therefore, it is very important to establish the underground shelter to ensure the safety of the workers trapped in the mine after the accident. In this paper, a kind of assembled movable lifehold is introduced. The mechanical design software SolidWorks is used to establish the solid model of the lifehold, and the strength analysis of the structural system is carried out by using the numerical simulation software, including statics analysis and dynamic load analysis. The environment of the lifeguard can be regarded as a kind of pressure vessel when the mine collapses and permeates, so when the static load is analyzed, the uniform pressure is applied on the surface of the rescue chamber. In order to improve the overall mechanical properties of the lifehold, two methods of strengthening the mechanical structure and adding the honeycomb structure are adopted. The different effects of the two methods on improving the strength and stiffness of the lifehold are analyzed and compared. In the calculation of dynamic load, due to the large calculation workload and the limitation of hardware conditions, a pressure-time curve is established in advance to simulate the shock wave caused by explosion loading on the surface of the rescue tank in the form of uniform surface force.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD774
本文编号：2457255
[Abstract]:As a big coal-producing country and a big coal-consuming country, coal has always occupied the core position in the energy structure of our country. With the increasing demand for energy, the amount of coal mining is also rising, and the accompanying safety problems become more and more prominent, frequent mine accidents, resulting in a large number of people injured and killed. Due to the complexity of underground strata, mine accidents can not be completely avoided. Therefore, it is very important to establish the underground shelter to ensure the safety of the workers trapped in the mine after the accident. In this paper, a kind of assembled movable lifehold is introduced. The mechanical design software SolidWorks is used to establish the solid model of the lifehold, and the strength analysis of the structural system is carried out by using the numerical simulation software, including statics analysis and dynamic load analysis. The environment of the lifeguard can be regarded as a kind of pressure vessel when the mine collapses and permeates, so when the static load is analyzed, the uniform pressure is applied on the surface of the rescue chamber. In order to improve the overall mechanical properties of the lifehold, two methods of strengthening the mechanical structure and adding the honeycomb structure are adopted. The different effects of the two methods on improving the strength and stiffness of the lifehold are analyzed and compared. In the calculation of dynamic load, due to the large calculation workload and the limitation of hardware conditions, a pressure-time curve is established in advance to simulate the shock wave caused by explosion loading on the surface of the rescue tank in the form of uniform surface force.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD774
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