马尾山硫铁矿围岩温度特征及开采层地温计算
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摘要
根据安徽马尾山硫铁矿矿区三个钻孔地下水的实测温度,分析了矿体围岩温度场的特征。通过温度数据拟合得到了实测地温梯度。结合地下水的运动修正地温梯度,最终计算得到了大地热流和开采层的温度。另外,根据区域地温下延公式对开采层温度进行了计算。计算结果表明,通过修正后的地温梯度计算得到的开采层的温度与应用区域地温下延公式计算得到的温度是一致的。开采层温度略高于安全标准,但不会产生热水危害。
Based on measured the groundwater temperature of three drilled holes in Pyrite Mine of Mawei Mountain in Anhui Province,the characteristics of the ore body surrounding rock temperature field is analyzed and obtained the measured geothermal gradient by fitting temperature data.The geothermal gradient combined with groundwater movement is correct,then finally the earth heat flow and the temperature of the mined layer are reached.In addition,according to the downward-continuation formula of the regional geothermal temperature,the mining layer temperature is calculated.The calculation result shows that the mining layer temperature based on the amended geothermal gradient is coincident with the temperature obtained by the downward-continuation formula of the regional geothermal temperature.The temperature of the mined layer is slightly higher than the safety standards,but will not produce hot water hazards.
Based on measured the groundwater temperature of three drilled holes in Pyrite Mine of Mawei Mountain in Anhui Province,the characteristics of the ore body surrounding rock temperature field is analyzed and obtained the measured geothermal gradient by fitting temperature data.The geothermal gradient combined with groundwater movement is correct,then finally the earth heat flow and the temperature of the mined layer are reached.In addition,according to the downward-continuation formula of the regional geothermal temperature,the mining layer temperature is calculated.The calculation result shows that the mining layer temperature based on the amended geothermal gradient is coincident with the temperature obtained by the downward-continuation formula of the regional geothermal temperature.The temperature of the mined layer is slightly higher than the safety standards,but will not produce hot water hazards.
引文
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2张宏济.热传导.北京:高等教育出版社,1992
3邬立,赵璐,罗湘赣.贵阳市乌当区地热田地温场特征及大地热流估算.勘察科学技术,2012;3:42—43
4熊亮萍,胡圣标,汪缉安.中国东南地区岩石热导率值的分析.岩石力学,1994;10(3):324—327
5汪集肠,黄少鹏.中国大陆地区大地热流数据汇编(第二版).地震地质,1990;12(4):356—358
6施尚明,赵盼,霍东凯,等.地温梯度研究中应该注意的问题.科学技术与工程,2011;11(20):4838—4840
7陈运泰.20世纪中国学术大典.固体地球物理学.福州:福建教育出版社,2002
8阎如璲.试谈矿床地温工作中的几个问题.矿区水文地质,1981;(3):4—8
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