CAJ | 학술논문

随着煤炭开采深度的增大，矿井高温问题日益突出，因此必须对矿区的地温场特征进行研究。基于安徽淮北和淮南煤田煤系所测定的127块岩石样品的热导率数据，结合区内前人的研究成果，全面报道两淮煤田岩石热导率参数及其特征，并分析热导率对现今地温场的影响。结果表明：两淮煤田煤系岩石热导率变化范围为0.37~4.36 W/(m·K)，平均值为2.54 W/(m·K)；热导率与岩性、埋藏深度、地层时代和密度等密切相关，砂岩的热导率普遍大于泥岩和煤，热导率和深度、密度均表现为正相关关系；岩石导热性的差异对区内地温场的影响较大，导热性差的松散层和煤层往往会造成地温异常，且上覆松散层愈厚其地温愈高。
수착매탄개채심도적증대，광정고온문제일익돌출，인차필수대광구적지온장특정진행연구。기우안휘회북화회남매전매계소측정적127괴암석양품적열도솔수거，결합구내전인적연구성과，전면보도량회매전암석열도솔삼수급기특정，병분석열도솔대현금지온장적영향。결과표명：량회매전매계암석열도솔변화범위위0.37~4.36 W/(m·K)，평균치위2.54 W/(m·K)；열도솔여암성、매장심도、지층시대화밀도등밀절상관，사암적열도솔보편대우니암화매，열도솔화심도、밀도균표현위정상관관계；암석도열성적차이대구내지온장적영향교대，도열성차적송산층화매층왕왕회조성지온이상，차상복송산층유후기지온유고。
With the increase of coal mining depth, the problem of high temperature in mine becomes more and more obvious. Therefore, it is necessary to study the geothermal field in mining area. Based on the results of thermal conductivity of tested 127 rock samples of coal measure strata in Huainan-Huaibei coalfield and combining the previous measured data in the region, this paper reported the parameters and the characteristics of rock thermal conductivity in Huainan-Huaibei coalfield comprehensively and analyzed the influencing factors of thermal conductivity from different aspects. The results showed that the thermal conductivity of coal measure strata in Huainan-Huaibei coalfield ranges from 0.37 W/(m·K) to 4.36 W/(m·K) and the average is 2.54 W/(m·K). The correlation between the thermal conductivity and lithology, buried depth, stratigraphic age and density is significant. The thermal conductivity of sandstone is generally greater than that of mudstone and coal. There is a positive correlation between thermal conductivity and depth, density. The differences of thermal conductivity of rocks have a big influence on the regional geo-temperature gradient, poor heat conductivity of unconsolidated layers and coal seam tends to cause ground temperature anomaly, and the thicker overlying unconsolidated layers, the higher ground temperature.