朱集矿热害特征及其控制效果研究

发布时间：2018-05-20 18:44

  本文选题：深部开采 + 矿井热害　； 参考：《安徽理工大学》2013年硕士论文

【摘要】：矿井热害问题是一个日益突出的问题,目前国内外进行了大量科学研究,我国的研究虽然相对较晚,同样也取得了重大的进展,但是还有很多的问题没有解决。淮南煤田深部开采过程也面临着非常严重的高温热害问题,地温问题已经严重制约煤炭工业向深部的发展速度。 朱集煤矿是淮南矿区典型的高温热害矿井。本文针对朱集矿井地温较高的问题,采用热力学、地质学等理论分析与现场实测相结合的研究方法,对朱集煤矿进行了井下巷道直接测温,得到主要开采区域原岩温度的可靠数据。对矿井地温场规律、地温场影响因素、矿井热源进行分析总结,同时对井巷风流温升规律以及矿井降温效果做了分析研究。研究结果对朱集以及相似条件的高温矿井热害治理具有一定的指导意义。论文的主要成果与创新点如下： 1.运用理论分析了朱集矿井的高温热害问题是由于矿井开采深度深,受背斜等地质构造的影响,以及较厚的松散层覆盖等因素综合作用的结果。 2.采用高精度热电阻传感器对矿井进行原岩温度调查。结果表明,井下标高-863m～-1018m的范围,原岩温度在42.4℃～46.5℃,预计-1070m水平原岩温度在47.8℃～49.8℃之间。 3.通过理论分析矿井主要特征井巷的热源及温升过程,并根据实测总结出其风流温升规律特征。 4.分析了各类矿井降温技术的特点及其使用条件,对朱集矿井井下矿井降温进行考察。采用降温系统以后降温效果明显,风流干球温度降低4℃左右,相对湿度10%～20%左右。
[Abstract]:The problem of mine thermal hazard is an increasingly prominent problem. At present, a large number of scientific studies have been carried out at home and abroad. Although the research in China is relatively late, it has also made great progress, but there are still many problems that have not been solved. The deep mining process of Huainan coalfield is also faced with very serious problems of high temperature and heat damage. The geothermal problem has seriously restricted the speed of coal industry to deep development. Zhuji Coal Mine is a typical high temperature thermal hazard mine in Huainan mining area. In this paper, aiming at the problem of high ground temperature in Zhuji coal mine, using the research methods of thermodynamics, geology and field measurement, this paper directly measures the temperature of underground roadway in Zhuji coal mine. Reliable data of original rock temperature in main mining area are obtained. The law of mine ground temperature field, the influencing factors of ground temperature field and the mine heat source are analyzed and summarized. At the same time, the law of air flow temperature rise and the effect of mine cooling are analyzed and studied. The research results have certain guiding significance to Zhuji and similar conditions of high temperature mine heat damage control. The main achievements and innovations of the thesis are as follows: 1. The problem of high temperature thermal damage in Zhuji mine is analyzed theoretically because of deep mining depth, influenced by geological structure such as anticline, as well as the result of comprehensive action of thick loose layer covering and so on. 2. High precision thermal resistance sensor is used to investigate the original rock temperature of mine. The results show that in the range of -863 m ~ 1018 m, the original rock temperature is 42.4 鈩，

本文编号：1915806