煤矿井下温湿度预测方法研究及应用

发布时间：2018-05-25 17:28

本文选题：数学模型 + 风流温度　；参考：《辽宁工程技术大学》2015年硕士论文

【摘要】：随着我国矿业工程的不断发展,地下开采的深度越来越大,对应大采深矿井的温度也越来越高；所以,高温高湿已经成为制约煤炭安全开采的重大问题之一,矿井高温高湿成为一个不容忽视且急需解决的问题。对矿井热害控制的前提是对井下温度、湿度进行预测分析。目前,国内外专家对煤矿井下风流温度、湿度以及壁面温度的预测工作做了大量的研究,并且推导出一系列相关的计算方法。本文在前人对井下热环境研究的基础上进一步探讨了矿井风流与围岩热湿交换的各种现象,并且通过对比实际矿井测量数据对解析结果进行了验证。在三维围岩温度场的基础上,论文对煤矿井下巷道中的温度、湿度以及壁面温度的分布进行了数值模拟,且进一步建立了可以应用于矿井通风网络解算的简单实用数学模型。把各种处在井下不同的水平以及不同倾角的巷道作为研究对象,分析讨论了在水分的蒸发、热传导、对流换热等不同条件下的风流温度、湿度及壁面温度分布的特征,证明了在单一的矿井巷道中的模拟计算式可以计算矿井通风网络内任意巷道的风流温湿度,利用均匀潮湿度的概念能够比较客观的模拟与预测风流温度及湿度的变化。对陶矿的地下温度的变化规律进行了模拟计算,针对矿井的不同巷道条件和不同的通风时间的实测值,利用理论计算式进行了模拟计算,实际对比验证了模拟计算结果与实际测量结果,实践证明经过进一步完善的计算模型的计算结果精度完全满足实际情况的要求。
[Abstract]:With the continuous development of mining engineering in our country, the depth of underground mining is getting deeper and deeper, and the temperature of mine corresponding to large mining depth is becoming higher and higher. Therefore, high temperature and high humidity have become one of the major problems restricting the safe mining of coal. Mine high temperature and high humidity become a problem that can not be ignored and need to be solved urgently. The premise of thermal hazard control is to predict and analyze the temperature and humidity. At present, experts at home and abroad have done a lot of research on the prediction of air flow temperature, humidity and wall temperature in coal mine, and deduced a series of related calculation methods. On the basis of previous researches on underground thermal environment, various phenomena of heat and moisture exchange between mine air flow and surrounding rock are further discussed in this paper, and the analytical results are verified by comparing actual mine measurement data. On the basis of three-dimensional surrounding rock temperature field, the temperature, humidity and wall temperature distribution in underground roadway are numerically simulated, and a simple and practical mathematical model which can be applied to the solution of mine ventilation network is established. In this paper, the characteristics of air flow temperature, humidity and wall temperature distribution under different conditions such as water evaporation, heat conduction and convection heat transfer are analyzed and discussed by taking various roadways at different levels and different inclination angles as the research object, and the characteristics of air flow temperature, humidity and wall temperature distribution under different conditions such as water evaporation, heat conduction and convection heat transfer are discussed. It is proved that the simulation formula in a single mine tunnel can calculate the air flow temperature and humidity of any roadway in the mine ventilation network, and the change of air flow temperature and humidity can be simulated and predicted objectively by using the concept of uniform humidity. The variation law of underground temperature of pottery mine is simulated and calculated. According to the measured values of different roadway conditions and different ventilation time in coal mine, the theoretical calculation formula is used to simulate calculation. The results of simulation and measurement are compared with each other, and it is proved that the precision of the model can meet the requirements of the actual situation.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD727

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