Advanced Search

Indexed by SCI、CA、РЖ、PA、CSA、ZR、etc .

Turn off MathJax
Article Contents
biao shu, fan zeng, john kemeny, runjun zhu, keping chen, jingqiang tan. analysis of the hydraulic and heat transfer evolution mechanism of a single rock fracture. Journal of Earth Science. doi: 10.1007/s12583-022-1648-7
Citation: biao shu, fan zeng, john kemeny, runjun zhu, keping chen, jingqiang tan. analysis of the hydraulic and heat transfer evolution mechanism of a single rock fracture. Journal of Earth Science. doi: 10.1007/s12583-022-1648-7

analysis of the hydraulic and heat transfer evolution mechanism of a single rock fracture

doi: 10.1007/s12583-022-1648-7
  • Received Date: 29 Jul 2021
  • Rev Recd Date: 10 Mar 2022
  • Accepted Date: 11 Mar 2022
  • Available Online: 16 Mar 2022
  • mineral dissolution and mechanical deformation of granite are two main mechanisms that affect permeability evolution of rock fracture. in this study, two water flow-through experiments with large granite fractures were conducted at 200 °c with a constant flow rate for 24 h, under confining pressures of 5 and 10 mpa, respectively. water pressure and temperature were measured, fracture aperture and permeability were calculated, and chemical element concentrations in effluent water were tested for mechanism analysis. the permeability fluctuates up and down between 2.62×10-12 and 3.16×10-12 m2 at confining pressure of 5 mpa; while it decreased monotonously by 24% from 1.92×10-12 to 1.45×10-12 m2 at a confining pressure of 10 mpa. the heat transfer rates at both experiments stay stable at about 0.25 j/s. the mass concentration of ca, na, k, and si in effluent water are between 5 to 23 mg/l, indicating slight dissolution of ca-plagioclase, na-plagioclase, and k-feldspar, as well as possible precipitation of minor amount of kaolinite or qartz. the total amount of free-face dissolution and pressure dissolution are similar at 5 and 10 mpa. the geochemical reaction counts only small part of aperture change, and the mechanical deformation counts the major part of aperture change.

     

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(109) PDF downloads(5) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return