Collaborative optimization of driving support technology in the W3233 working face return airway

Deep-shaft mining in roadway stress concentration, difficult control of the surrounding rock, and imbalance affect efficiency coal mines. The mechanical parameters crack development law rock were studied by laboratory experiments. model was established method theoretical analysis, maximum empty roof distance deduced, two support schemes designed. Through numerical simulation method, scheme compared analyzed, deformation rule optimization application hysteresis technology are studied. effect different verified three-dimensional similar practical engineering verification showed that construction time each circle reduced approximately 1 h, work completed 60 days earlier. research optimal (7 bolts with 800 mm × 1000 spacing between roof, 10 sides, 2 cables 1600 2000 roof). Support applied to site at 80 mm, less than original scheme. advance under process, operation safety improved. results revealed mechanism proved effectiveness digging synergy. This plan serves as a reference for studying rapid excavation provides safe efficient mining.