Coal Engineering ›› 2024, Vol. 56 ›› Issue (11): 84-89.doi: 10.11799/ce202411013

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Research and Practice on the Safe Retraction Platform of Hydraulic Support in Fully-Mechanized Top-Coal Caving Working Face

  

  • Received:2024-10-17 Revised:2024-10-24 Online:2023-11-20 Published:2025-01-03

Abstract: Aiming at control challenges such as slow retraction speed of hydraulic supports in fully-mechanized top-coal caving working face, sinking of hydraulic support base plate during steering process, and easy tilting frame, the comprehensive methods including on-site investigation, numerical simulation, and theoretical analysis methods were adopted to study the safety retraction platform of hydraulic supports in fully-mechanized top-coal caving (FMTC) working face. The main structure and operating process of the retraction platform were analyzed, and the stress and displacement characteristics during the interaction process between hydraulic supports and retraction platform were simulated and studied. Field industrial tests were conducted on a typical FMTC working face in Shuiyu coal mine, and the application effect was good, providing certain reference for the safe retraction of hydraulic supports in similar FMTC working face.