煤炭工程 ›› 2026, Vol. 58 ›› Issue (4): 195-203.doi: 10.11799/ce202604023

• 研究探讨 • 上一篇    下一篇

石槽村煤矿深部地热资源赋存特征及成因模式研究

马进勇,安鸿涛,郭嘉豪,魏启明,雷燕子,张 波,马琛昭,王碧瑶   

  1. 1.国家能源集团宁夏煤业有限责任公司 石槽村煤矿,宁夏 银川 750011

    2.西安煤科地热能开发有限公司,陕西 西安 712100

    3.中国矿业大学 矿业工程学院,江苏 徐州 221116

  • 收稿日期:2025-04-17 修回日期:2025-05-29 出版日期:2026-04-10 发布日期:2026-05-12
  • 通讯作者: 郭嘉豪 E-mail:458572087@qq.com

Occurrence characteristics and genetic mode of deep geothermal resources

in Shicaocun Coal Mine

  • Received:2025-04-17 Revised:2025-05-29 Online:2026-04-10 Published:2026-05-12
  • Contact: GUO JiaHao E-mail:458572087@qq.com

摘要:

为揭示石槽村煤矿深部地热地质条件及其成因机制,为采区热害防治提供理论依据,基于井田内7条勘探线及36口钻孔的测温数据,系统分析了研究区现今地温场、地温梯度场及大地热流分布特征,结合地热流体水化学与运移特性,阐明了地热资源的形成条件,并采用体积法对地热资源量进行了定量评价。研究表明:石槽村煤矿位于灵武凹陷地热区(Ⅱ2),现今地温梯度介于2.53~3.84℃/100m,大地热流值介于47.6~72.1mW/m2。地温场在水平方向上呈现“中心低、东北与西南两翼高”的特征,垂直方向上表现为“北低南高”;地温梯度场与大地热流场呈现“东北低、西北高”的分布格局,其余区域相对均匀。研究区整体属高温异常区,存在一级、二级热害区。地热流体补给主要源于大气降水和越流补给,径流缓慢、矿化度高;热储类型为侏罗系延安组层状-带状复合型砂岩热储,盖层为泥岩和页岩。经体积法计算,研究区地热资源总量为1.29×1017J,可回收热量为1.29×1016J,折合标准煤约4.4×106t,总热功率为13.6MW,可供暖面积达34万m2

Abstract:

Abstract:In order to study the deep geothermal geological conditions of Shicaocun Mine and its genesis mechanism, the present-day geothermal temperature field, geothermal temperature gradient field and geothermal heat flow distribution characteristics of the study area were comprehensively elaborated on the basis of temperature measurement data from seven exploration lines and 36 boreholes in the well field, and the conditions for the formation of geothermal resources were also analysed. The study shows that the Shicaocun coal mine is located in the geothermal area (II2) of Lingwu Depression, with the present-day geothermal temperature gradient ranging from 2.53 to 3.84℃/100m, and the geodetic heat flow values ranging from 47.6mW/m2 to 72.1mW/m2, the geothermal temperature field is characterised as low in the centre in the horizontal direction, high in the north-east and south-west flanks, low in the north and high in the south in the vertical direction, and the geothermal temperature gradient field and the heat flow field are characterised as low in the north-east and high in the north-west, and the rest of the locations are relatively uniformly distributed. The study area is a high-temperature anomaly area, and there are first- and second-degree thermal hazard areas. The geothermal fluid recharge mainly originates from atmospheric precipitation and transcurrent recharge, with slow runoff and high mineralisation. The Jurassic Yan'an Formation sandstone thermal storage type is layered and banded thermal storage, and the thermal storage layer is Jurassic Yan'an Formation sandstone, capped by mudstone and shale. Calculated by volumetric method, the geothermal resource is 1.29×101?J, and the recoverable heat is 1.29×101?J, which is equivalent to about 4.4×106t of standard coal, and the total thermal power is 13.6MW, and the heating area can be up to 340,000m2. The research results can provide theoretical basis for 31 mining area mining engineering.

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