地学前缘 ›› 2024, Vol. 31 ›› Issue (6): 158-172.DOI: 10.13745/j.esf.sf.2024.7.16

• 地热开发利用技术 • 上一篇    下一篇

基于管控单元的城市尺度浅层地热能开发控制因素及指引导则:以雄安新区起步区为例

王婉丽1,2(), 段雅娟1, 张薇1,2, 朱喜1,2, 马峰1,2, 王贵玲1,2,*()   

  1. 1.中国地质科学院 水文地质环境地质研究所, 河北 石家庄 050061
    2.自然资源部地热与干热岩勘查开发技术创新中心, 河北 石家庄 050061
  • 收稿日期:2024-01-05 修回日期:2024-04-25 出版日期:2024-11-25 发布日期:2024-11-25
  • 通信作者: *王贵玲(1964—),男,博士,研究员,博士生导师,主要从事地下水资源与地热研究工作。E-mail: guilingw@163.com
  • 作者简介:王婉丽(1985—),女,博士,硕士生导师,主要从事地热资源勘查和评价方面研究工作。E-mail: wanliwang2010@163.com
  • 基金资助:
    国家重点研发计划项目(2021YFB1507300);国家重点研发计划项目(2021YFB1507302);国家自然科学基金项目(41302189);中国地质调查局地质调查项目(DD20230019);中国地质调查局地质调查项目(DD20221676)

Control factors and guidelines for urban-scale shallow geothermal energy development based on control units: An example from Xiong’an

WANG Wanli1,2(), DUAN Yajuan1, ZHANG Wei1,2, ZHU Xi1,2, MA Feng1,2, WANG Guiling1,2,*()   

  1. 1. Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China
    2. Technological Innovation Center of Geothermal & Hot Dry Rock Exploration and Development, Ministry of Natural Resources, Shijiazhuang 050061, China
  • Received:2024-01-05 Revised:2024-04-25 Online:2024-11-25 Published:2024-11-25

摘要:

浅层地热能潜力巨大,其合理利用可极大促进城市节能减排和绿色发展。城市尺度浅层地热能利用除与地质条件密切相关外,还受城市规划影响。本文以雄安新区起步区控制性规划为基础,通过综述城市尺度浅层地热能开发利用的主要控制因素,制定空间适宜性评价和指引导则的工作流程。充分考虑地质因素、资源因素和社会生态因素对浅层地热能开发的制约,结合地温测量、热物性测试、现场热响应试验等室内和现场测试数据,对雄安新区起步区已规划的30个的管控单元进行单要素分析,开展浅层地热能开发综合评价并制定开发指引导则。结果显示,地温场条件、水文地质条件、热传导性能、热容量、供暖制冷面积、城市规划和地面沉降是影响雄安新区浅层地热能利用的直接因素。研究区浅层地热能开发适宜性好的单元占43%,主要分布在北部A、B、C和D单元,以可利用区为主,综合导热能力高,单位供暖制冷面积大,具有比较适宜的浅层地热能赋存条件;适宜性中等单元占33%,主要分布在E单元和其他单元的零星区域,其特点为综合导热能力中等,单位供暖制冷面积和热容量偏小;适宜性差单元占23%,主要集中在南部F单元,该区域水系丰富,受空间规划的影响,开发利用受到制约。研究成果为雄安新区起步区的浅层地热能资源利用和开发提供了支撑,也为城市尺度下浅层地热能资源的规范性评价提供参考依据。

关键词: 浅层地热能, 城市尺度, 控制因素, 管控分区, 开发指引导则

Abstract:

The rational utilization of shallow geothermal energy (SGE) has great potential in promoting urban energy conservation, greenhouse emission reduction and green development. In addition to the effects of geological conditions, urban-scale SGE utilization and development is also affected by urban planning. Based on the regulatory planning of the starting area of Xiong’an, this paper summarizes the main controlling factors—geological, resource and socio-ecological factors—and formulates a workflow of spatial suitability evaluation and guidance rules. First, fully considering the constrains from the main controlling factors, combined with the indoor and field test data from geothermal measurement, thermophysical property test, field thermal response test, etc., the single element analysis of 30 control units planned in the starting area was carried out. Then, the comprehensive evaluation of SGE development was performed, and the development guidelines were formulated. Factors including geothermal field conditions, hydrogeological conditions, heat conductivity, heat capacity, heating/cooling areas, urban planning and land subsidence directly affect the SGE utilization in Xiong’an. Within the study area, 43% of the control units demonstrated good suitability for SGE development. Such areas were designated as “utilizable area”, which were mainly distributed in the north in units A, B, C, and D, mainly in the developed urban areas with high comprehensive thermal conductivity, large heating/cooling load per unit area, and higher likelihood of SGE occurrences. Units with medium suitability, i.e., 33% of the control units, were designated as “limited utilization area”; they mainly included sporadic areas of unit E and other units, with medium comprehensive thermal conductivity, small heating/cooling load per unit area, and heat capacity. The rest 23%, designated as “restricted utilization area”, were poor suitability units, mainly included areas in the south in F unit, with rich water systems and restricted spatial planning. The research results provide support for the SGE utilization and development in the starting area of Xiong’an, and also provide a reference for standardized urban-scale SGE valuation.

Key words: shallow geothermal energy, urban-scale, control factors, control units, development guidelines

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