| 班文韬.贵州革东地区带状热储赋存规律研究[J].地质与勘探,2018,54(2):366-375 |
| 贵州革东地区带状热储赋存规律研究 |
| A study of the occurrence law of zonal thermal reservoirs in the Gedong area of Guizhou |
| 投稿时间：2017-06-16 修订日期：2018-01-21 |
| DOI：10.12134/j.dzykt.2018.02.015 |
| 中文关键词: 带状热储 地热水 赋存规律 贵州革东地区 |
| 英文关键词: zonal thermal reservoir, geothermal water, occurrence regularity, Gedong area of Guizhou |
| 基金项目:贵州省国土资源厅第三批地质勘查基金整装勘查项目（编号：黔国土资发[2014]37号 ）资助 |
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| 中文摘要: |
| 通过对贵州革东变质岩地区地热水的水化学、氢氧同位素及地热井的地温场垂向变化的分析，结果表明：①区域地热井热储呈带状（Ⅱ-2型）；②区域大地热流量供热，补给来源为大气降水，补给高程下限1100m，地热水循环深度下限2400m，围岩与上层地下水影响其化学组分；③挽近期革东活动断层具有导热导水性，经循环的地热水沿断层上盘构造裂隙向上运移在此断层破碎带富集，位于断层上盘3km范围内的地热钻孔揭穿该断裂带深度约1200m，均有流量约994m3/d、井口水温40℃的地热水。研究结果可为黔东南地区带状热储的开发与利用提供参考。 |
| 英文摘要: |
| This work analyzes hydrochemistry and hydrogen and oxygen isotopes of geothermal water and vertical variations of the geothermal field of wells in the metamorphic rocks of the Gedong area, Guizhou. The results show that：①regional geothermal wells exhibit a belt-shaped pattern (Ⅱ-2 type) .②The geothermal wells are provided with terrestrial heat and atmospheric precipitation with elevation lower limit 1100m.The geothermal water circulation runs above depth 2400m. Its chemical composition is influenced by surrounding rock and overlying groundwater ③The recently active Gedong fault is heat and water conductive, in which circulative geothermal water flows upward along cracks of the fault’s hanging wall and accumulates in the fractures zone.The geothermal drilling holes within 3km to the hanging wall of the fault reveals this fault zone is about 1200m deep, where geothermal water has a flow rate of about 994m3 / d and a wellhead water temperature of 40 ℃.The above analysis results can provide reference for the development and utilization of zonal thermal reservoirs in southeastern Guizhou Province. |
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