崇礼冬奥场馆区域地质构造控热特征分析

Analysis of Tectonic Geothermal Control Features in Winter Olympic Games Venue Area,Chongli

为确定冬奥会场馆及附近地热资源勘查开发前景,河北省煤田地质局实施了"张家口市崇礼区冬奥会场馆及周边地区地热资源调查"项目,通过遥感解译、电磁探测、氡气测量和地热地质调查及岩矿样分析等,推测本区的地热资源概念模型是:上地幔与岩浆放射性供热-深大断裂导热通道-深大断裂破碎带与次级断裂热储-断裂裂隙带直接或侧向径流补水的带状热储。通过对崇礼区地质构造控制地热的分析与研究,认为在区域内深大断裂与两侧次级断裂破碎带底部有较好的贮水空间,在地下也有足够的温度对地下水加热,其尚义-平泉深大断裂及两侧次级断裂深部空间可作为热储,断裂两侧均为地热远景区。将为开发利用冬奥会场馆区域深部地热资源提供依据,以助力绿色冬奥。

To ascertain the Winter Olympic Games revenue area geothermal resource exploration and exploitation prospect,the Hebei Provincial Bureau of Coal Geology has implemented the project"Winter Olympic Games venue area and periphery geothermal resource exploration"in the Chongli District,Zhangjiakou City.Through the remote sensing interpretation,electromagnetic survey,radon survey,geotherm geological investigation and rock,mineral sample analysis etc.have inferred a conceptual model of geothermal resource in the area is:upper mantle and magmatic radioactive heating-discordogenic fault thermal conduction channel-discordogenic fault fracture zone and secondary fault thermal reservoir-faulted fracture zone immediate or lateral runoff recharge banded thermal reservoir.Through the analytic study on tectonic geothermal control has considered that the discordogenic fault and both sides secondary fracture zone bottom have better water storage space,also have sufficient temperature to heat the groundwater.The deep space of Shangyi-Pingquan discordogenic fault and secondary fault of both sides can be considered as thermal reservoirs,thus the both sides of the fault are all geothermal resource prospects.Thus the study has provided basis for the venue area deep part geothermal resource planning to help the green Winter Olympic Games.