This study proposes an interdisciplinary geothermal exploitation model. An improved fractal theory suitable for geothermal reservoirs is presented
utilizing two innovative fractal parameters (fractal dimension of fractures and maximum length of fractures ) to quantitatively characterize fracture structures. The improved fractal theory is then applied to complex thermal-flow-solid coupling in geothermal reservoir exploitation. The research results demonstrate that the proposed structural parameters effectively characterize micro-macro interactions during geothermal exploitation. The efficiency of geothermal exploitation is directly proportional to the fractal dimension and the maximum length of fractures
while the geothermal rock temperature is also proportional to and .
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