摘要
基于黔西补作勘查区32口钻孔的简易测温资料，分析了勘查区浅部地温场的基本特征。研究发现，区内地温梯度在0．98～3．25℃／100m，平均2．07℃／100m，总体上属于正常地温场范畴；平面上变化较大，局部存在低温异常，在垂向上随着孔底深度增大，各钻孔地温梯度总体上趋于增高，但与埋深之间关系相对离散，钻孑L温度曲线表现为两种基本形式。研究认为，断层构造控制了地温场的分布，地温异常带的展布方向反映区域构造的基本轮廓；地下水动力场微弱，对地温场影响不甚明显；地层岩性及埋深影响地温场的垂向分布。
Based on 32 boreholes facility temperature measured data in the Buzuo exploration area, western Guizhou, analyzed explora- tion area shallow part geothermal field basic features. The study has found that the geothermal gradient in the area is within 0.98- 3.25oC/10Ore, average 2.07 ℃/100m, as a whole in normal geothermal field scope. Rather large variation on plane, locally low tempera- ture anomaly is existed; vertically, along with bottom depth deepening, borehole geothermal gradient generally increasing, but relation- ship between them and buried depths is relatively discrete, borehole temperature curves appear as two basic forms. The study has con- sidered that the faulted structures have controlled geothermal field distribution, geothermal anomalous zone spreading direction can re- flect basic outline of regional structures; groundwater dynamic field is weak, its impact on geothermal field is inconspicuous; strata li- thology and buried depth have impacted vertical distribution of geothermal field.
出处
《中国煤炭地质》
2013年第10期12-17,共6页
Coal Geology of China
基金
国家自然科学基金重点项目(40730422)
国家科技重大专项项目(2011ZX04034)
江苏省优势学科项目资助
关键词
黔西
地温梯度
煤层温度
影响因素
western Guizhou
geothermal gradient
coal seam temperature
impacting factor
