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Study On The Underground Thermal Conditions In Jinchuan 2th Mine

Posted on:2010-03-12Degree:MasterType:Thesis
Country:ChinaCandidate:B C SongFull Text:PDF
GTID:2131330332962323Subject:Safety Technology and Engineering
Abstract/Summary:PDF Full Text Request
This topic is aimed at the mines in China has entered a deep shaft mining, which bring a serious threat subject to high temperature thermal damage. Paper is divided into two major: Underground thermal analysis and air temperature prediction in mine. First, from the observation and analysis of thermal parameters of mine, make a describe to the physical meaning of temperature, pressure, wind speed, density, moisture content, relative humidity, enthalpy,etc,and pointed out the inter-relationship between them. Then obtains the thermal variation lows from the ground to the mining face by these observation data. Make a detailed analysis to the mine heat and moisture source, they are the atmosphere state on surface, air compression, the rock heat, mine water cooling, electrical and mechanical equipment heat, coal and gangue heat in transportation, oxidation exothermic heat and personnel, etc, Come to the calculation model for the amount of heat sources. Finishing obtained mathematical model of airflow prediction Underground sections, and then proceed temperature forecast aimed at the selected two representative sites in the middle 850m in Jinchuan Mine 2,they are bottom yard of auxiliary shaft in line 18 and heading face. The prediction results show that temperature of bottom yard of auxiliary shaft in line 18 is 23.4℃; the head-on airflow temperature in Heading face can reach to 35.1℃. Expected to be the hottest month extractive surface temperature will be higher, so it is necessary to cause attention for heat injury in deep mining. The article has also collected a number of cooling method of mine which commonly used, to the actual conditions in Jinchuan 2, the author put forward some recommendations of mine cooling, including the selection with multi-level machine station.
Keywords/Search Tags:Thermodynamic parameters, heat and moisture source, temperature forecast, heat injury, cooling
PDF Full Text Request
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