高温深井降温技术及其经济性研究

发布时间：2018-02-27 04:48

本文关键词： 矿井降温技术冷负荷通风降温二次换热经济性分析　出处：《安徽理工大学》2013年硕士论文　论文类型：学位论文

【摘要】：随着采矿工业的发展,矿井开采深度逐渐增加,综合机械化程度不断提高,地热和井下设备向井下空气散发的热量显著增加,各类矿井所面临的热害问题也越来越严重,矿内高温、高湿环境严重影响井下作业人员的身体健康,矿井热害逐渐成为与瓦斯、煤尘、顶板、火、水等同样严重的煤矿井下自然灾害。而且研究表明,矿井热害现已成为制约矿井开采深度的关键性因素。因此,为给井下创造一个可承受的工作气候环境,必须在矿井的生产周期中全面关注矿井热害问题,本论文就针对在矿井正常生产过程中所要面临的热害问题,在理论分析和实际数据分析的基础上,提出几种新型矿井降温制冷系统,分析各自的特点,找出合理的解决方式。对井下影响井下热环境的主客观进行分析,从以下几个方面着手,即围岩散热、运输中的煤和矸石散热、空气的自压缩散热、地下热水散热以及人体和机械设备的散热等。在根据建筑环境学中关于人体热平衡的相关知识,综合评定井下热环境的相关参数。结合实际淮南某矿井在生产运行中的实际数据,再根据前一部分中的相关理论关系式,计算出影响井下热环境的各部分热源的实际产热量,并与通风系统结合。分析通风系统对井下环境的影响,从而确定整个矿井机械降温系统的功耗,为下面选择合适的制冷降温系统做准备。分别对矿井水冷却空调降温系统、低温空调降温系统、冰冷却空调降温系统以及冷热电联产降温系统进行分析,并详细说明了以上各种系统所涉及的设备、管道以及系统运行的影响因素等。在前几部分的基础之上,结合现代经济评估方法,采用费用类经济评价方法综合生产实际应用问题对矿井降温系统进行经济评价。分析每种制冷降温系统的优势以及不足之处。本论文在前人的基础之上,结合作者在矿山实习中产中所遇到的问题,从理论上分析得到矿井冰冷却空调降温系统结合冷热电联产技术在实际运行过程中最为经济,是最理想的矿井制冷降温系统,但是该系统仍然有很多问题有待进一步解决。
[Abstract]:With the development of mining industry, the mining depth increases gradually, the degree of comprehensive mechanization increases continuously, the heat emitted from geothermal and underground equipment into underground air increases significantly, and the problems of thermal damage in all kinds of mines are becoming more and more serious. The high temperature and high humidity environment in the mine seriously affect the health of the underground workers, and the thermal damage of the mine is gradually becoming a natural disaster in the coal mine as serious as gas, coal dust, roof, fire, water and so on. Mine thermal damage has become a key factor restricting the depth of mine mining. Therefore, in order to create a sustainable working climate environment for underground mines, it is necessary to pay attention to the problem of mine thermal damage in the mine production cycle. On the basis of theoretical analysis and practical data analysis, this paper puts forward several new mine cooling and refrigeration systems, analyzes their respective characteristics and finds out reasonable solutions. The subjective and objective analysis of underground thermal environment is carried out from the following aspects: surrounding rock heat dissipation, coal and gangue heat dissipation in transportation, air self-compression heat dissipation, According to the relevant knowledge of the thermal balance of the human body in the building environment, the relevant parameters of the underground thermal environment are evaluated synthetically in the light of the heat dissipation of the underground hot water and the heat dissipation of the human body and mechanical equipment. Combined with the actual data of Huainan coal mine in production and operation, and according to the relevant theoretical relation formula of the former part, the actual heat production of each part of the heat source which affects the underground thermal environment is calculated. Combined with ventilation system, the influence of ventilation system on underground environment is analyzed to determine the power consumption of the whole mine machinery cooling system, and to prepare for the selection of suitable cooling system below. The cooling system of mine water cooling air conditioning, low temperature air conditioning system, cold air conditioning cooling system and cooling system of cogeneration of cold, heat and electricity are analyzed respectively, and the equipments involved in the above systems are explained in detail. The influencing factors of pipeline and system operation. On the basis of the previous parts, combined with modern economic evaluation methods, The economic evaluation of mine cooling system is carried out by using the cost economic evaluation method. The advantages and disadvantages of each cooling system are analyzed. On the basis of the predecessors, combined with the problems encountered by the author in the mine practice, this paper theoretically analyses the most economical operation of the cold cooling system combined with the cogeneration technology of cold, heat and power in the mine. It is the ideal mine cooling system, but there are still many problems to be solved.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD727.2

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