The invention relates to a
hydraulic fracturing simulation experimental device and method of a hot dry rock enhanced type geothermal
system. A hot dry rock high-pressure and high-temperature generating environment is simulated, precise stress is applied to a
rock core by designing a multistage
piston, the permeability of hot dry rock fluid is maintained by adopting a pressureproof and temperature-resistant perforated plate, the hot dry rock fluid is externally connected to a fluid collection chamber through a flow guiding groove, and meanwhile an adjustable
sound emission probe is embedded into a true-triaxial high-pressure axe to monitor a
sound emission event happening when a fracture expands in the
hydraulic fracturing process, integrated collection of information of rock
hydraulic fracturing,
sound emission,
heat energy recovery efficiency and the like under the triaxial confining pressure condition can be achieved by utilizing the device, and therefore the fracture
initiation andexpanding situations of the hot dry rock hydraulic fracture can be studied. The hydraulic fracturing
simulation experimental device and method have the beneficial effects that warming and heat preservation effects are good, a sealed part is simple to replace and convenient to maintain, a sound emission embedded part can be adjusted according to the requirements for the probe sizes, in addition, the whole device further has the characteristics that operation is convenient, and the protection and maintenance period is short, and the device is an important technological innovation at the aspect of dry hot rock enhanced type geothermal
system hydraulic fracturing testing device detection.