新义二井深部地温场特征及控制因素分析

以新义二井深部煤详查区的钻孔测温数据为基础，对勘查区的地温场特征及其控制因素进行系统分析。结果表明，详查区地温梯度为2.37～3.24 ℃/hm，整体属地温梯度正常区，局部存在高温异常区。在纵向上，煤层温度随埋藏深度的增加而增大，两者存在明显的线性相关性，表明详查区地层增温类型主要为传导型；而地温梯度与钻孔深度之间的关系则较为离散，两者无明显相关性。研究表明，地质构造、松散覆盖层厚度及地下水活动是详查区地温场的主要控制因素。

Analysis on characteristics and controlling factors of deep geothermal field in exploration area of Xinyi No.2 Shaft

Based on the geo-temperature data of boreholes in the deep exploration area of Xinyi No.2 Shaft，this paper systematically analyzed the characteristics of the geothermal field and its controlling factors.The results showed that the geothermal gradients in the exploration area are between 2.37 ℃/hm and 3.24 ℃/hm，the overall geothermal gradient is a normal area，and locally high-temperature anomaly area is existed.Vertically，the temperature of the coal seam increases with the depth of coal，and there is a clear linear correlation between them，indicating that conductive is the main type of stratum warming.The relationship between geothermal gradient and drilling depth is discrete and there is no obvious correlation between them.The analysis showed that the geological structure，the thickness of loose layer and the groundwater activity are the main controlling factors of the geothermal field in the exploration area.