Xiang Cheng

True Triaxial Physical Simulation Experiment on the Fracture Propagation Law of Hydraulic Fracturing for Horizontal Wells in the Roof of Soft and Low-Permeability Coal Seams

The key to exploiting coalbed methane in soft and low-permeability coal seams by deploying horizontal wells in roof strata lies in whether hydraulic fractures can propagate into the coal seam after initiating from the roof. True triaxial physical simulation experiments based on 15 artificially cast fracturing specimens...

Thermo-Hydro-Mechanical (THM) Coupled Model for Gas Extraction from Deep Coal Seams and Factors Influencing the Effective Extraction Radius

Gas extraction from deep coal seams is strongly affected by high geothermal temperature, high gas pressure, and high in situ stress, making accurate prediction of the effective gas extraction radius important for optimizing gas extraction parameters. In this study, a thermo-hydro-mechanical (THM) coupled model incorpor...

Mechanical response and failure mechanisms of sandstone under water–rock interaction: a multi-scale study and constitutive modeling