Construction Method of Honeycomb Gas Flow Network Channel: Structure-Based and Engineering Response on Plastic Zone Distribution Form

The plastic zone of the surrounding rock borehole is a high-quality channel for gas flow. Studying distribution form in boreholes and characteristics extended connection network essential optimal layout drainage boreholes. Considering pressure parameters based on modified Terzaghi effective stress principle Mohr–Coulomb strength criterion. implicit equation boundary derived. influence two-way confining ratio, coal body strength, hole diameter permeability-increasing circle analyzed, honeycomb flow structure zones constructed. enrichment seam are connected, rate improved.