贵州小屯煤矿现代地温场特征及煤层温度分析

卢玲玲; 时文文; 潘春娟

卢玲玲,时文文,潘春娟.贵州小屯煤矿现代地温场特征及煤层温度分析[J].贵州地质,2022,39(4):386-391

贵州小屯煤矿现代地温场特征及煤层温度分析

Characteristics of Modern Geothermal Fields and Analysis of Coal Seam Temperatures in Xiaotun Coal Mining in Guizhou

投稿时间：2022-06-24

DOI：

中文关键词: 小屯煤矿地温梯度煤层温度影响因素

英文关键词:Xiaotun coal mine Geothermal gradient Ccoal seam temperature Impacting factor

基金项目:

作者	单位
卢玲玲	中国煤炭地质总局航测遥感局，陕西西安710199
时文文	中国煤炭地质总局航测遥感局，陕西西安710199
潘春娟	中国煤炭地质总局航测遥感局，陕西西安710199

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中文摘要:

为了研究小屯矿区现今地温场的分布规律和矿井热害防治工作，在系统分析小屯煤矿14口钻孔测温数据的基础上，全面阐述了该区的现今地温场分布特征，并估算了出现一级和二级热害区的开采标高。研究表明:小屯煤矿现今地温梯度介于174394℃/100 m之间，平均地温梯度为321℃/100 m，地温整体较高；在纵向上，煤矿地温随着深度的增加不断升高，以传导型增温特点为主，但同时具有一定的离散性，指示除埋深外尚有其它地质控制因素；在平面上，地温梯度变化较大，局部存在高温异常与低温异常；地温偏高的原因主要与区域地热地质条件及断裂构造有关。预测主煤层开采标高在+949 m达到一级高温热害，+759 m达到二级高温热害。本研究成果对小屯煤矿的开发具有一定的指导意义。

英文摘要:

In order to research the characteristics of modern geothermal fields and heat damage prevention in Xiaotun mining area，based on systematic analysis the measured temperature data of 14 boreholes，it Comprehensively accounted the current geothermal characteristics of this area，the mining elevation of one class thermal region and two class thermal region were estimatedThe research shows that:the current geothermal gradient at Xiaotun coal mine ranges from 174 to 394°C/100m，with an average geothermal gradient is 321°C/100m，and the geothermal temperature is higher overallVertically，the coal mine temperature increased with depth，dominated by conductive warming characteristics，and also has a certain discrete natureIndicated that there have other geological controls in addition to depthOn a flat surface，the ground temperature gradients have large variationsHigh temperature anomalies and low temperature anomalies in partialThe main reasons of high ground temperature are regional geothermal geological conditions and fracture structureIt predicted that the main coal seam at +949m excavation elevation reach one class heat damage，and at +759m excavation elevation reach two class heat damageThe results of this research have some guidance available to the development of the Xiaotun coal mine

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