**4. Results of parametric study**

We performed numerical simulations of the HF propagation and interaction with the preex‐ isting NF by use of the modified CSIRO code (with stress-and-energy initiation criterion) [12, 20]. Dimensionless parameters of the simulations have been selected within the range specified in Table 2. Systematic analysis of the obtained results of HF-NF interaction allowed us to project them onto the specific parametric diagrams containing dimensionless toughness of the rock, fracture intersection angle, stress contrast, frictional coefficient. and relative toughness of the NF. For better representation they are divided into several cross sections of one global multiparametrical cube.
